def initializeGL(self):
"""Initialize OpenGL, VBOs, upload data on the GPU, etc."""
# background color
gl.glClearColor(0.8, 0.8, 0.8, 0)
# Make initial data array.
# compile the vertex shader
vs = compile_shader(VERTEX, gl.GL_VERTEX_SHADER)
# compile the geometry shader
gs = compile_shader(GEOMETRY, gl.GL_GEOMETRY_SHADER)
# compile the fragment shader
fs = compile_shader(FRAGMENT, gl.GL_FRAGMENT_SHADER)
# Link the programs.
self.render_program = link_shaders(vs, gs, fs)
# Compile the compute shader
cs = compile_shader(COMPUTE, gl.GL_COMPUTE_SHADER)
# Create the compute shader buffers.
self.makeBuffers()
#self.vbo = glvbo.VBO(self.attributes)
self.vbo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.vbo)
gl.glBufferData(gl.GL_ARRAY_BUFFER, self.attributes.nbytes,
self.attributes, gl.GL_DYNAMIC_COPY)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
self.ssbo = gl.glGenBuffers(1)
gl.glBindBufferBase(gl.GL_SHADER_STORAGE_BUFFER, 1, self.ssbo)
gl.glBufferData(gl.GL_SHADER_STORAGE_BUFFER, self.velocities.nbytes,
self.velocities, gl.GL_DYNAMIC_COPY)
self.compute_program = link_shaders(cs)
def init(self):
super(BasicWindow, self).init()
vert_shader = compileShader(vert_shader_source, GL.GL_VERTEX_SHADER)
frag_shader = compileShader(frag_shader_source, GL.GL_FRAGMENT_SHADER)
self.shader = game_core.ShaderProgram(vert_shader, frag_shader)
self.ndc_vao = GL.glGenVertexArrays(1)
GL.glBindVertexArray(self.ndc_vao)
vertex_buffer = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, vertex_buffer)
data = [
-1.0, -1.0, 0.0,
0.0, 1.0, 0.0,
1.0, -1.0, 0.0,
]
array_type = (GL.GLfloat*len(data))
GL.glBufferData(
GL.GL_ARRAY_BUFFER,
len(data)*game_core.FLOAT_SIZE,
array_type(*data),
GL.GL_STATIC_DRAW
)
GL.glEnableVertexAttribArray(0)
GL.glVertexAttribPointer(0, 3, GL.GL_FLOAT, GL.GL_FALSE, 0, None)
GL.glBindVertexArray(0)
def change_vbo_colors (col_vbo = None, colors = [], program = None):
""" Function doc """
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, col_vbo)
GL.glBufferData(GL.GL_ARRAY_BUFFER, colors.itemsize*int(len(colors)), colors, GL.GL_STATIC_DRAW)
att_colors = GL.glGetAttribLocation(program, 'vert_color')
GL.glEnableVertexAttribArray(att_colors)
GL.glVertexAttribPointer(att_colors, 3, GL.GL_FLOAT, GL.GL_FALSE, 3*colors.itemsize, ctypes.c_void_p(0))
def build_buffer(program, data, data_usage=gl.GL_STATIC_DRAW, buffer_target=gl.GL_ARRAY_BUFFER):
# with use_program(program):
buffer = gl.glGenBuffers(1)
gl.glBindBuffer(buffer_target, buffer)
gl.glBufferData(buffer_target, data.nbytes, data, data_usage)
gl.glBindBuffer(buffer_target, 0)
return buffer
def __init__(self, elements, indices):
temp_list = [0]
# noinspection PyCallingNonCallable
self.vbo = (ctypes.c_uint32 * 1)(*temp_list)
# noinspection PyCallingNonCallable
self.ibo = (ctypes.c_uint32 * 1)(*temp_list)
GL.glGenBuffers(1, self.vbo)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.vbo)
# noinspection PyCallingNonCallable
GL.glBufferData(
GL.GL_ARRAY_BUFFER,
len(elements) * 4,
(ctypes.c_float * len(elements))(*elements),
GL.GL_STATIC_DRAW
)
GL.glGenBuffers(1, self.ibo)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, self.ibo)
# noinspection PyCallingNonCallable
GL.glBufferData(
GL.GL_ELEMENT_ARRAY_BUFFER,
len(indices) * 4,
(ctypes.c_uint32 * len(indices))(*indices),
GL.GL_STATIC_DRAW
)
self.indices_number = ctypes.c_uint32(len(indices))
def sync(self):
# Sync the buffer with the graphics hardware if the buffer is dirty
if self.status == 'synced': return
size = self.stride * self.count
gl.glBindBuffer(self.target, self.id)
gl.glBufferData(self.target, size, self.element, self.usage)
self.status = 'synced'
def init_vertex_buf(self):
self.vbo = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER,self.vbo)
array_type = (GL.GLfloat*len(VERTICES))
GL.glBufferData(GL.GL_ARRAY_BUFFER,len(VERTICES)*SIZE_FLOAT,
array_type(*VERTICES),GL.GL_STATIC_DRAW)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER,0)
def bind_attrib(self, attrib_id, size, data, storagetype=gl.GL_STATIC_DRAW, instance_divisor=0, datatype=gl.GL_FLOAT, stride=0, offset=None, normalize=False):
if RenderObject.bound_vao is not self.vao_id:
gl.glBindVertexArray(self.vao_id)
RenderObject.bound_vao = self.vao_id
# Keep track of max instance divisor
self.max_instance_divisor = max(instance_divisor, self.max_instance_divisor)
# If the input is an array create a new GL buffer, otherwise assume the buffer already exists and a buffer ID is passed
if type(data) is np.ndarray:
# Get an index to one new buffer in GPU mem, bind it, and copy the array data to it
buf_id = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, buf_id)
gl.glBufferData(gl.GL_ARRAY_BUFFER, data.nbytes, data, storagetype)
else:
# Assume that a GLuint is passed which means that the buffer is already in GPU memory
buf_id = data
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, buf_id)
# Assign this buffer to one of the attributes in the shader
gl.glEnableVertexAttribArray(attrib_id)
gl.glVertexAttribPointer(attrib_id, size, datatype, normalize, stride, offset)
# For instanced data, indicate per how many instances we move a step in the buffer (1=per instance)
if instance_divisor > 0:
gl.glVertexAttribDivisor(attrib_id, instance_divisor)
# Clean up
gl.glDisableVertexAttribArray(attrib_id)
self.enabled_attributes[attrib_id] = [size, buf_id, instance_divisor, datatype]
return buf_id
def __init__(self, name, vertices, indices):
self.name = name
assert len(indices) % 3 == 0
self.numTriangles = len(indices) / 3
vertex_data = vertices if isinstance(vertices, numpy.ndarray) else numpy.concatenate(vertices)
index_data = numpy.array(indices, dtype=numpy.uint32)
self.vao = GL.glGenVertexArrays(1)
GL.glBindVertexArray(self.vao)
self.vbo, self.ibo = GL.glGenBuffers(2)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.vbo)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, self.ibo)
self.program = BlinnWithoutNormalsProgram.get()
GL.glEnableVertexAttribArray(self.program.attrib_position)
GL.glVertexAttribPointer(self.program.attrib_position, 3, GL.GL_FLOAT, False, 3*SIZE_OF_FLOAT32, ctypes.c_void_p(0))
# Send the data over to the buffer
GL.glBufferData(GL.GL_ARRAY_BUFFER, len(vertex_data) * SIZE_OF_FLOAT32, vertex_data.astype(numpy.float32, copy=False), GL.GL_STATIC_DRAW)
GL.glBufferData(GL.GL_ELEMENT_ARRAY_BUFFER, len(index_data) * SIZE_OF_UNSIGNED32, index_data, GL.GL_STATIC_DRAW)
# Unbind the VAO first (Important)
GL.glBindVertexArray(0)
# Unbind other stuff
GL.glDisableVertexAttribArray(self.program.attrib_position)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, 0)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
def get_ub(listy, record_byte_size):
ubo, binding_point_index = gen_ub()
gl.glBindBufferBase(gl.GL_UNIFORM_BUFFER, binding_point_index, ubo)
gl.glBufferData(gl.GL_UNIFORM_BUFFER, record_byte_size*len(listy), listy,
gl.GL_DYNAMIC_DRAW)
gl.glBindBuffer(gl.GL_UNIFORM_BUFFER, 0)
return ubo, binding_point_index
def __setitem__(self, idxs, data):
"""Set the contents of the buffer. Currently, only :py:obj:`Ellipsis` is valid as an index.
:param idxs: The indices to set. A new buffer will be created if :py:obj:`Ellipsis` is
passed.
:param data: The new contents of the buffer. If a :py:class:`numpy.ndarray` is passed, it
will be used to initialize the buffer. If a :py:class:`numpy.dtype`
is passed, the buffer will not be initialized.
:type data: :py:class:`numpy.dtype` or :py:class:`numpy.ndarray`
.. warning::
|buffer-bind|
"""
if idxs is Ellipsis:
if isinstance(data, dtype):
dt = data
data = None
else:
dt = ( data.dtype if product(data.shape) == 1
else dtype((data.dtype, data.shape)) )
try:
binding = next(iter(self.active_bindings))
except StopIteration:
raise RuntimeError("Buffer data can only be set if it is bound.")
GL.glBufferData(binding, dt.itemsize, data, self.usage)
self.dtype = dt
else:
raise NotImplementedError("TODO: Allow changing replacing buffer dtypes.")
def setup_buffers_v2(gltf, uri_path):
buffers = gltf.get('buffers', [])
data_buffers = []
for i, buffer in enumerate(buffers):
uri = buffer['uri']
if uri.startswith('data:application/octet-stream;base64,'):
data_buffers.append(base64.b64decode(uri.split(',')[1]))
else:
filename = os.path.join(uri_path, buffer['uri'])
data_buffers.append(open(filename, 'rb').read())
_logger.debug('loaded buffer %s from "%s"',
i if 'name' not in buffer else '%d ("%s")' % (i, buffer['name']),
filename)
for i, bufferView in enumerate(gltf.get('bufferViews', [])):
buffer_id = gl.glGenBuffers(1)
byteOffset = bufferView.get('byteOffset', 0)
target = bufferView.get('target', gl.GL_ARRAY_BUFFER)
gl.glBindBuffer(target, buffer_id)
gl.glBufferData(target, bufferView['byteLength'],
data_buffers[bufferView['buffer']][byteOffset:], gl.GL_STATIC_DRAW)
if gl.glGetError() != gl.GL_NO_ERROR:
raise Exception('failed to create bufferView %s' % i)
bufferView['id'] = buffer_id
gl.glBindBuffer(target, 0)
_logger.debug('created bufferView %s', i if 'name' not in bufferView else '%d ("%s")' % (i, bufferView['name']))
def __setitem__(self, key, value):
with self.bound:
sz = len(self)
if isinstance(key, slice):
start = int(key.start) if key.start is not None else 0
stop = int(key.stop) if key.stop is not None else start + value.size
else:
start = int(key)
stop = start + 1
if start < 0 or stop < 0 or start >= stop:
raise IndexError
if stop > sz:
newsz = max(sz * 2, stop)
a = numpy.empty((newsz,), dtype=self.dtype)
GL.glGetBufferSubData(GL.GL_ARRAY_BUFFER, 0,
sz * self.dtype.itemsize,
a.ctypes.data)
b = numpy.asarray(value).reshape(-1)
a[start:stop] = b
GL.glBufferData(GL.GL_ARRAY_BUFFER, newsz * self.dtype.itemsize,
a.ctypes.data, self.usage)
else:
a = numpy.ascontiguousarray(value, self.dtype).reshape(-1)
sz = min((stop - start), len(a))
GL.glBufferSubData(GL.GL_ARRAY_BUFFER, start * self.dtype.itemsize,
sz * self.dtype.itemsize, a)
def setAttributes(self, data):
self.data = data
self.dataLen = data.shape[0]
# Make this buffer the default one
gl.glBindVertexArray(self.VAO)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.buffer)
# Upload data
gl.glBufferData(gl.GL_ARRAY_BUFFER, data.nbytes, data, gl.GL_DYNAMIC_DRAW)
offset = 0
for i, name in enumerate(data.dtype.names):
# import ipdb; ipdb.set_trace()
stride = data[name].strides[0]
if data[name].ndim == 1:
size = 1
else:
size = data[name].shape[1]
loc = gl.glGetAttribLocation(self.program, name)
# remember these properties for later updating of buffer
self.attribute_layout[name] = {'offset':offset}
gl.glVertexAttribPointer(loc, size, gl.GL_FLOAT, False, stride, ctypes.c_void_p(offset))
gl.glEnableVertexAttribArray(loc)
offset += data.dtype[name].itemsize
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
gl.glBindVertexArray(0)
# ensure correct mask is rendered:
self.setMask()
def initializeGL(self):
"""
Create the graphic buffers and compile the shaders.
"""
# Create and bind a new VAO (Vertex Array Object).
self.vertex_array_object = gl.glGenVertexArrays(1)
gl.glBindVertexArray(self.vertex_array_object)
# Upload color values (one for each triangle vertex) in RGB format.
colBuf = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, colBuf)
col = np.array([1,0,0,0,1,0,0,0,1], dtype=np.float32)
gl.glBufferData(gl.GL_ARRAY_BUFFER, col, gl.GL_STATIC_DRAW)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 0, None)
gl.glEnableVertexAttribArray(0)
# Create and bind GPU buffer for vertex data.
self.vertexBuffer = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.vertexBuffer)
# Associate the vertex buffer with the "Layout 0" shader variable (look
# for "v_N" variable in vertex shader program).
gl.glVertexAttribPointer(1, 4, gl.GL_FLOAT, gl.GL_FALSE, 0, None)
gl.glEnableVertexAttribArray(1)
# Enable depth-sorting.
gl.glEnable(gl.GL_DEPTH_TEST)
gl.glDepthFunc(gl.GL_LESS)
# Background color.
gl.glClearColor(0, 0, 0, 0)
# Compile- and install shader programs.
self.shaders = self.linkShaders('blog4.vs', 'blog4.fs')
gl.glUseProgram(self.shaders)
def initializeGL(self):
gl.glClearColor(1.0,1.0,1.0,0.0)
# gl.glColor3f(0.0,0.0, 0.0)
# gl.glPointSize(4.0)
# gl.glMatrixMode(gl.GL_PROJECTION)
# gl.glLoadIdentity()
# glu.gluOrtho2D(0.0,640.0,0.0,480.0)
gl.glViewport (0, 0, 800, 600)
gl.glClearColor (0.0, 0.5, 0.5, 1.0)
gl.glEnableClientState (gl.GL_VERTEX_ARRAY)
self._vertices, self._normals = util.load_obj("monkey.obj")
self._vbo = gl.glGenBuffers(1)
gl.glBindBuffer (gl.GL_ARRAY_BUFFER, self._vbo)
gl.glBufferData (gl.GL_ARRAY_BUFFER, self._vertices.size*4,
self._vertices, gl.GL_STATIC_DRAW)
self._normal_vbo = gl.glGenBuffers(1)
gl.glBindBuffer (gl.GL_ARRAY_BUFFER, self._normal_vbo)
gl.glBufferData (gl.GL_ARRAY_BUFFER, self._normals.size*4,
self._normals, gl.GL_STATIC_DRAW)
self._shader_program = shader.LoadShaders("shader8.vs",
"shader8.ps")
gl.glEnable(gl.GL_DEPTH_TEST)
gl.glDepthFunc(gl.GL_LESS)
def initialize(self):
vertex_shader = shaders.compileShader("""#version 330
in vec3 vPosition;
uniform mat4 MVP;
void main()
{
gl_Position = MVP * vec4(vPosition, 1.0);
}""", gl.GL_VERTEX_SHADER)
fragment_shader = shaders.compileShader("""#version 330
void main()
{
gl_FragColor = vec4( 0, 1, 1, 1 );
}""", gl.GL_FRAGMENT_SHADER)
self._shader = shaders.compileProgram(vertex_shader, fragment_shader)
self._position_handle = 0
gl.glBindAttribLocation(self._shader, self._position_handle, b"vPosition")
self._mvp_handle = gl.glGetUniformLocation(self._shader, b"MVP")
self._vertex_vbo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._vertex_vbo)
gl.glBufferData(gl.GL_ARRAY_BUFFER, len(self._model._vertex_buffer), self._model._vertex_buffer, gl.GL_STATIC_DRAW)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
self._index_vbo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, self._index_vbo)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, len(self._model._index_buffer), self._model._index_buffer, gl.GL_STATIC_DRAW)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, 0)
def setBackground(self, aStreamer=None):
""" Sets an streamer object as the one who provides the background image """
self.str = aStreamer
if self.str:
GL.glBindBuffer(GL.GL_PIXEL_UNPACK_BUFFER, self.pbo)
GL.glBufferData(GL.GL_PIXEL_UNPACK_BUFFER, self.str.current(), GL.GL_DYNAMIC_DRAW)
GL.glBindBuffer(GL.GL_PIXEL_UNPACK_BUFFER, 0)
def allocate(self, data, count):
GL.glBufferData(
self._btype,
count,
data,
self._usage,
)
def initializeGL(self):
""" Set OpenGL variables """
self.qglClearColor(QtGui.QColor(250,250,250,255))
#GL.glShadeModel(GL.GL_FLAT)
GL.glShadeModel(GL.GL_SMOOTH)
GL.glEnable(GL.GL_DEPTH_TEST)
GL.glEnable(GL.GL_POINT_SMOOTH )
#GL.glEnable(GL.GL_CULL_FACE)
# Creates the pixel buffer object for the background and loads image data into it
self.pbo = long(GL.glGenBuffers(1))
GL.glBindBuffer(GL.GL_PIXEL_UNPACK_BUFFER, self.pbo)
if self.str:
GL.glBufferData(GL.GL_PIXEL_UNPACK_BUFFER, self.str.current(), GL.GL_DYNAMIC_DRAW)
# Creates the texture object for the background
self.texid = long(GL.glGenTextures(1))
GL.glBindTexture(GL.GL_TEXTURE_2D, self.texid)
GL.glTexParameterf(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST)
GL.glTexParameterf(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST)
GL.glPixelStorei(GL.GL_UNPACK_ALIGNMENT,1)
# Loads image data from the PBO to the texture object
if self.str:
GL.glTexImage2D(GL.GL_TEXTURE_2D, 0, 3, self.str.width, self.str.height, 0, GL.GL_RGB, GL.GL_UNSIGNED_BYTE, GL.GLvoid)
# Unbinds everything
GL.glBindTexture(GL.GL_TEXTURE_2D, 0)
GL.glBindBuffer(GL.GL_PIXEL_UNPACK_BUFFER, 0)
def __init__(self, vertices, indices, draw_method):
from . import SHORT_SIZE, FLOAT_SIZE
self.draw_method = draw_method
self.indices = indices
self.vao = GL.glGenVertexArrays(1)
GL.glBindVertexArray(self.vao)
vertexBufferObject = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, vertexBufferObject)
array_type = (GL.GLfloat*len(vertices))
GL.glBufferData(
GL.GL_ARRAY_BUFFER,
len(vertices)*FLOAT_SIZE,
array_type(*vertices),
GL.GL_STATIC_DRAW)
GL.glEnableVertexAttribArray(0)
GL.glVertexAttribPointer(0, 3, GL.GL_FLOAT, GL.GL_FALSE, 0, None)
indexBufferObject = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, indexBufferObject)
array_type = (GL.GLushort*len(self.indices))
GL.glBufferData(
GL.GL_ELEMENT_ARRAY_BUFFER,
len(self.indices)*SHORT_SIZE,
array_type(*self.indices),
GL.GL_STATIC_DRAW)
GL.glBindVertexArray(0)
def __init__(self, vertices, normals, indices, draw_method):
self.draw_method = draw_method
self.indices = indices
self.vao = GL.glGenVertexArrays(1)
GL.glBindVertexArray(self.vao)
vertexBufferObject = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, vertexBufferObject)
data = vertices + normals
array_type = (GL.GLfloat*len(data))
GL.glBufferData(
GL.GL_ARRAY_BUFFER,
len(data)*FLOAT_SIZE,
array_type(*data),
GL.GL_STATIC_DRAW)
GL.glEnableVertexAttribArray(0)
GL.glEnableVertexAttribArray(1)
GL.glVertexAttribPointer(0, 3, GL.GL_FLOAT, GL.GL_FALSE, 0, None)
GL.glVertexAttribPointer(1, 3, GL.GL_FLOAT, GL.GL_FALSE, 0, GL.GLvoidp(len(vertices)*FLOAT_SIZE))
indexBufferObject = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, indexBufferObject)
array_type = (GL.GLuint*len(self.indices))
GL.glBufferData(
GL.GL_ELEMENT_ARRAY_BUFFER,
len(self.indices)*FLOAT_SIZE,
array_type(*self.indices),
GL.GL_STATIC_DRAW)
GL.glBindVertexArray(0)
def mySetup(self):
self.shader = self.loadShader("vertexshader.glsl", "fragmentshader.glsl")
#Define geometry:
self.vertex_data = np.array([
[-1.0,-1.0, 0.0, -1.0, 0.0, 0.0],
[ 1.0,-1.0, 0.0, 0.0,-1.0, 0.0],
[ 1.0, 1.0, 0.0, 1.0, 0.0, 0.0],
[-1.0, 1.0, 0.0, 0.0, 1.0, 0.0],
], dtype=np.float32)
self.index_data = np.array([
[0, 1, 3],
[1, 2, 3]
], dtype=np.uint32)
GL.glEnable(GL.GL_CULL_FACE) # This isn't enabled by default
GL.glFrontFace(GL.GL_CCW) # Standard, right hand rule
GL.glCullFace(GL.GL_BACK)
self.vbo = GL.glGenBuffers(1)
self.ibo = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.vbo) # Select self.vbo
GL.glBufferData(GL.GL_ARRAY_BUFFER, self.vertex_data, GL.GL_STATIC_DRAW) # Assign data to selected buffer
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, self.ibo) # Select self.ibo
GL.glBufferData(GL.GL_ELEMENT_ARRAY_BUFFER, self.index_data, GL.GL_STATIC_DRAW) # Assign data to selected buffer
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0) # Deselect buffers
def setup_buffers(gltf, uri_path):
buffers = gltf['buffers']
data_buffers = {}
for buffer_name, buffer in buffers.items():
uri = buffer['uri']
if uri.startswith('data:application/octet-stream;base64,'):
data_buffers[buffer_name] = base64.b64decode(uri.split(',')[1])
else:
filename = os.path.join(uri_path, buffer['uri'])
if buffer['type'] == 'arraybuffer':
data_buffers[buffer_name] = open(filename, 'rb').read()
elif buffer['type'] == 'text':
raise Exception('TODO')
#data_buffers[buffer_name] = open(filename, 'r').read()
_logger.debug('* loaded buffer "%s" (from %s)', buffer_name, filename)
for bufferView_name, bufferView in gltf['bufferViews'].items():
buffer_id = gl.glGenBuffers(1)
#byteLength = bufferView['byteLength']
byteOffset = bufferView['byteOffset']
gl.glBindBuffer(bufferView['target'], buffer_id)
gl.glBufferData(bufferView['target'], bufferView['byteLength'],
data_buffers[bufferView['buffer']][byteOffset:], gl.GL_STATIC_DRAW)
if gl.glGetError() != gl.GL_NO_ERROR:
raise Exception('failed to create buffer "%s"' % bufferView_name)
bufferView['id'] = buffer_id
gl.glBindBuffer(bufferView['target'], 0)
_logger.debug('* created buffer "%s"' % bufferView_name)
def init_vertex_buf(self):
self.vbo = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER,self.vbo)
ArrayType = (GL.GLfloat*len(self.vertices))
GL.glBufferData(GL.GL_ARRAY_BUFFER,len(self.vertices)*self.size_float,
ArrayType(*self.vertices),GL.GL_STATIC_DRAW)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER,0)
def create_object(shader):
# Create a new VAO (Vertex Array Object) and bind it
vertex_array_object = GL.glGenVertexArrays(1)
GL.glBindVertexArray( vertex_array_object )
# Generate buffers to hold our vertices
vertex_buffer = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, vertex_buffer)
# Get the position of the 'position' in parameter of our shader and bind it.
position = GL.glGetAttribLocation(shader, 'position')
GL.glEnableVertexAttribArray(position)
coord = GL.glGetAttribLocation(shader, 'coord')
GL.glEnableVertexAttribArray(coord)
# Describe the 'position' data layout in the buffer
GL.glVertexAttribPointer(position, 2, GL.GL_FLOAT, False, 16, GL.GLvoidp(0))
GL.glVertexAttribPointer(coord, 2, GL.GL_FLOAT, False, 16, GL.GLvoidp(8))
# Send the data over to the buffer
GL.glBufferData(GL.GL_ARRAY_BUFFER, 96, vertices, GL.GL_STATIC_DRAW)
# Unbind the VAO first (Important)
GL.glBindVertexArray(0)
# Unbind other stuff
GL.glDisableVertexAttribArray(position)
GL.glDisableVertexAttribArray(coord)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
return vertex_array_object
def init_gl(self, force=False):
if not force and self.buffers is not None:
return
self.buffers = {}
for name, values in self.attributes.items():
values = values.tobytes()
vbo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
if name in self.attribute_usage:
usage = self.attribute_usage[name]
else:
usage = gl.GL_STATIC_DRAW
gl.glBufferData(gl.GL_ARRAY_BUFFER, len(values), values, usage)
if gl.glGetError() != gl.GL_NO_ERROR:
raise Exception('failed to init gl buffer')
self.buffers[name] = vbo
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
if force or (self.index_buffer is None and self.indices is not None):
indices = self.indices.tobytes()
vao = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, vao)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER,
len(indices), indices, gl.GL_STATIC_DRAW)
if gl.glGetError() != gl.GL_NO_ERROR:
raise Exception('failed to init gl buffer')
self.index_buffer = vao
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, 0)
_logger.info('%s.init_gl: OK', self.__class__.__name__)
def _make_sel_gl_dots(program, vismol_object = None, bckgrnd_color= [1.0,1.0,1.0,1.0]):
""" Function doc
"""
colors = vismol_object.color_indexes
dot_sizes = vismol_object.vdw_dot_sizes
coords = vismol_object.frames[0]
dot_qtty = int(len(coords)/3)
bckgrnd_color = [bckgrnd_color[0],bckgrnd_color[1],
bckgrnd_color[2],bckgrnd_color[3]]*dot_qtty
bckgrnd_color = np.array(bckgrnd_color, dtype=np.float32)
indexes = np.array(vismol_object.dot_indexes,dtype=np.uint32)
vao = GL.glGenVertexArrays(1)
GL.glBindVertexArray(vao)
ind_vbo = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, ind_vbo)
GL.glBufferData(GL.GL_ELEMENT_ARRAY_BUFFER, indexes.itemsize*int(len(indexes)), indexes, GL.GL_DYNAMIC_DRAW)
coord_vbo = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, coord_vbo)
GL.glBufferData(GL.GL_ARRAY_BUFFER, coords.itemsize*int(len(coords)), coords, GL.GL_STATIC_DRAW)
att_position = GL.glGetAttribLocation(program, 'vert_coord')
GL.glEnableVertexAttribArray(att_position)
GL.glVertexAttribPointer(att_position, 3, GL.GL_FLOAT, GL.GL_FALSE, 3*coords.itemsize, ctypes.c_void_p(0))
col_vbo = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, col_vbo)
GL.glBufferData(GL.GL_ARRAY_BUFFER, colors.itemsize*int(len(colors)), colors, GL.GL_STATIC_DRAW)
att_colors = GL.glGetAttribLocation(program, 'vert_color')
GL.glEnableVertexAttribArray(att_colors)
GL.glVertexAttribPointer(att_colors, 3, GL.GL_FLOAT, GL.GL_FALSE, 3*colors.itemsize, ctypes.c_void_p(0))
dot_vbo = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, dot_vbo)
GL.glBufferData(GL.GL_ARRAY_BUFFER, dot_sizes.itemsize*len(dot_sizes), dot_sizes, GL.GL_STATIC_DRAW)
att_size = GL.glGetAttribLocation(program, 'vert_dot_size')
GL.glEnableVertexAttribArray(att_size)
GL.glVertexAttribPointer(att_size, 1, GL.GL_FLOAT, GL.GL_FALSE, dot_sizes.itemsize, ctypes.c_void_p(0))
bckgrnd_vbo = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, bckgrnd_vbo)
GL.glBufferData(GL.GL_ARRAY_BUFFER, bckgrnd_color.itemsize*len(bckgrnd_color), bckgrnd_color, GL.GL_STATIC_DRAW)
att_bck_color = GL.glGetAttribLocation(program, 'bckgrnd_color')
GL.glEnableVertexAttribArray(att_bck_color)
GL.glVertexAttribPointer(att_bck_color, 4, GL.GL_FLOAT, GL.GL_FALSE, 4*bckgrnd_color.itemsize, ctypes.c_void_p(0))
GL.glBindVertexArray(0)
GL.glDisableVertexAttribArray(att_position)
GL.glDisableVertexAttribArray(att_colors)
GL.glDisableVertexAttribArray(att_size)
GL.glDisableVertexAttribArray(att_bck_color)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, 0)
vismol_object.sel_dots_vao = vao
vismol_object.sel_dot_buffers = (ind_vbo, coord_vbo, col_vbo)
return True
def __init__(self, vertices):
#pyglet.graphics.vertex_list((ntiles+1) * 4, ('v3f/static', v))
self.num_vertices = len(vertices) / 3
self.vbo = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.vbo)
GL.glBufferData(GL.GL_ARRAY_BUFFER, len(vertices)*4, (c_float*len(vertices))(*vertices), GL.GL_STATIC_DRAW)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
def paintGL(self):
if GL.glCheckFramebufferStatus(GL.GL_FRAMEBUFFER) == 33305:
return
GL.glClear(GL.GL_COLOR_BUFFER_BIT)
if not self.texture:
return
if not self.shader:
self.compileShaders()
if not self.vbo:
self.vbo = GL.glGenBuffers(1)
shaders.glUseProgram(self.shader)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.vbo)
vertices = numpy.array(
[-self.scale + self.cx, -self.scale + self.cy ,
self.scale + self.cx, -self.scale + self.cy,
self.scale + self.cx, self.scale + self.cy,
-self.scale + self.cx, self.scale + self.cy,
0,0,1,0,1,1,0,1], dtype = numpy.float32)
GL.glBufferData(GL.GL_ARRAY_BUFFER, 64, vertices, GL.GL_STATIC_DRAW)
loc = GL.glGetAttribLocation(self.shader, "positionIn")
GL.glEnableVertexAttribArray(loc)
GL.glVertexAttribPointer(loc, 2, GL.GL_FLOAT, 0, 8, c_void_p(0))
loc = GL.glGetAttribLocation(self.shader, "texIn")
GL.glEnableVertexAttribArray(loc)
GL.glVertexAttribPointer(loc, 2, GL.GL_FLOAT, 0, 8, c_void_p(32))
def _uniformLoc(name):
return GL.glGetUniformLocation(self.shader,name)
GL.glUniform1f(_uniformLoc("g"), self.gamma);
GL.glUniform1f(_uniformLoc("m"), math.pow(2, self.exposure + 2.47393))
GL.glUniform1f(_uniformLoc("s"), math.pow(2, -3.5 * self.gamma))
GL.glUniform1i(_uniformLoc("hdr_mode"), self.hdr_mode);
GL.glUniform1i(_uniformLoc("texture"), 0);
GL.glActiveTexture(GL.GL_TEXTURE0);
GL.glBindTexture(GL.GL_TEXTURE_2D, self.texture)
GL.glDrawArrays(GL.GL_QUADS, 0, 4);
GL.glBindTexture(GL.GL_TEXTURE_2D, 0)
loc = GL.glGetAttribLocation(self.shader, "positionIn")
GL.glDisableVertexAttribArray(loc)
loc = GL.glGetAttribLocation(self.shader, "texIn")
GL.glDisableVertexAttribArray(loc)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
shaders.glUseProgram(0)
if self.rightBtnDown:
self.renderPixelInfo()
def initData():
# Uses vertex arrays.
global VAO1
global VBO1
global VAO2
global VBO2
global texture
global scene
global vertices
global vertices_num
global cx
global cy
global cz
if len(sys.argv) == 1:
vertices = loader.ObjLoader.load_model('cube.obj').astype('float32')
else:
vertices = loader.ObjLoader.load_model(str(sys.argv[1])).astype('float32')
texture = gl.glGenTextures(1)
gl.glBindTexture(gl.GL_TEXTURE_CUBE_MAP, texture)
loadCubemap(["right.jpg", "left.jpg", "top.jpg", "bottom.jpg", "front.jpg", "back.jpg"], "yokohama")
gl.glTexParameteri(gl.GL_TEXTURE_CUBE_MAP, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR);
gl.glTexParameteri(gl.GL_TEXTURE_CUBE_MAP, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR);
gl.glTexParameteri(gl.GL_TEXTURE_CUBE_MAP, gl.GL_TEXTURE_WRAP_S, gl.GL_CLAMP_TO_EDGE);
gl.glTexParameteri(gl.GL_TEXTURE_CUBE_MAP, gl.GL_TEXTURE_WRAP_T, gl.GL_CLAMP_TO_EDGE);
gl.glTexParameteri(gl.GL_TEXTURE_CUBE_MAP, gl.GL_TEXTURE_WRAP_R, gl.GL_CLAMP_TO_EDGE);
# Set cube vertices.
skyboxVertices = np.array([
-1.0, 1.0, -1.0,
-1.0, -1.0, -1.0,
1.0, -1.0, -1.0,
1.0, -1.0, -1.0,
1.0, 1.0, -1.0,
-1.0, 1.0, -1.0,
-1.0, -1.0, 1.0,
-1.0, -1.0, -1.0,
-1.0, 1.0, -1.0,
-1.0, 1.0, -1.0,
-1.0, 1.0, 1.0,
-1.0, -1.0, 1.0,
1.0, -1.0, -1.0,
1.0, -1.0, 1.0,
1.0, 1.0, 1.0,
1.0, 1.0, 1.0,
1.0, 1.0, -1.0,
1.0, -1.0, -1.0,
-1.0, -1.0, 1.0,
-1.0, 1.0, 1.0,
1.0, 1.0, 1.0,
1.0, 1.0, 1.0,
1.0, -1.0, 1.0,
-1.0, -1.0, 1.0,
-1.0, 1.0, -1.0,
1.0, 1.0, -1.0,
1.0, 1.0, 1.0,
1.0, 1.0, 1.0,
-1.0, 1.0, 1.0,
-1.0, 1.0, -1.0,
-1.0, -1.0, -1.0,
-1.0, -1.0, 1.0,
1.0, -1.0, -1.0,
1.0, -1.0, -1.0,
-1.0, -1.0, 1.0,
1.0, -1.0, 1.0
], dtype='float32')
# Vertex array.
VAO1 = gl.glGenVertexArrays(1)
gl.glBindVertexArray(VAO1)
# Vertex buffer
VBO1 = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, VBO1)
gl.glBufferData(gl.GL_ARRAY_BUFFER, skyboxVertices.nbytes, skyboxVertices, gl.GL_STATIC_DRAW)
# Set attributes.
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 3 * skyboxVertices.itemsize, None)
gl.glEnableVertexAttribArray(0)
# Set pyramid vertices.
pyramid = np.array([
# Front face
# coordinates # normals
0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
-1.0, -1.0, 0.0, 1.0, 0.0, 1.0,
1.0, -1.0, 0.0, 0.0, 1.0, 0.0,
# Right face
1.0, -1.0, 0.0, 0.0, 1.0, 0.0,
0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
0.0, -1.0, -1.0, 0.0, 1.0, 0.0,
# Left face
-1.0, -1.0, 0.0, 0.0, 1.0, 0.0,
0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
0.0, -1.0, -1.0, 0.0, 1.0, 0.0,
# Bottom face 1
-1.0, -1.0, 0.0, 0.0, 1.0, 0.0,
1.0, -1.0, 0.0, 1.0, 0.0, 1.0,
0.0, -1.0, -1.0, 0.0, 1.0, 0.0,
# back right face
1.0, -1.0, 0.0, 0.0, 1.0, 0.0,
0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
0.0, -1.0, 1.0, 0.0, 1.0, 0.0,
# back left face
-1.0, -1.0, 0.0, 0.0, 1.0, 0.0,
0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
0.0, -1.0, 1.0, 0.0, 1.0, 0.0,
# Bottom face 2
-1.0, -1.0, 0.0, 0.0, 1.0, 0.0,
1.0, -1.0, 0.0, 1.0, 0.0, 1.0,
0.0, -1.0, 1.0, 0.0, 1.0, 0.0,
], dtype='float32')
# Vertex array.
VAO2 = gl.glGenVertexArrays(1)
gl.glBindVertexArray(VAO2)
# Vertex buffer
VBO2 = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, VBO2)
gl.glBufferData(gl.GL_ARRAY_BUFFER, pyramid.nbytes, pyramid, gl.GL_STATIC_DRAW)
# Set attributes.
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 6 * pyramid.itemsize, None)
gl.glEnableVertexAttribArray(0)
gl.glVertexAttribPointer(1, 3, gl.GL_FLOAT, gl.GL_FALSE, 6 * pyramid.itemsize, c_void_p(3*pyramid.itemsize))
gl.glEnableVertexAttribArray(1)
# Unbind Vertex Array Object.
gl.glBindVertexArray(0)
# Enable depth test.
gl.glEnable(gl.GL_DEPTH_TEST);
def create_empty_buffer(size, target=gl.GL_ARRAY_BUFFER, usage=gl.GL_STATIC_DRAW):
buf_id = gl.glGenBuffers(1)
gl.glBindBuffer(target, buf_id)
gl.glBufferData(target, size, None, usage)
return buf_id
def glize(node):
model = node.transformation.astype(numpy.float32)
gl.glUniformMatrix4fv(
gl.glGetUniformLocation(shader, "model"), 1 , gl.GL_FALSE,
model
)
gl.glUniformMatrix4fv(
gl.glGetUniformLocation(shader, "view"), 1 , gl.GL_FALSE,
glm.value_ptr(view)
)
gl.glUniformMatrix4fv(
gl.glGetUniformLocation(shader, "projection"), 1 , gl.GL_FALSE,
glm.value_ptr(projection)
)
for mesh in node.meshes:
#assert False , texture #prueba para ver el nombre de la textura
texture_surface = pygame.image.load(getTexture(mesh))
texture_data = pygame.image.tostring(texture_surface, "RGB", 1)
width = texture_surface.get_width()
height = texture_surface.get_height()
texture = gl.glGenTextures(1)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB, width, height, 0, gl.GL_RGB, gl.GL_UNSIGNED_BYTE, texture_data)
gl.glGenerateMipmap(gl.GL_TEXTURE_2D)
vertex_data = numpy.hstack((
numpy.array(mesh.vertices, dtype=numpy.float32),
numpy.array(mesh.normals, dtype=numpy.float32),
numpy.array(mesh.texturecoords[0], dtype=numpy.float32)
))
index_data = numpy.hstack(
numpy.array(mesh.faces, dtype=numpy.int32)
)
vertex_buffer_object = gl.glGenVertexArrays(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vertex_buffer_object)
gl.glBufferData(gl.GL_ARRAY_BUFFER, vertex_data.nbytes, vertex_data, gl.GL_STATIC_DRAW)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, False, 9 * 4, None)
gl.glEnableVertexAttribArray(0)
gl.glVertexAttribPointer(1, 3, gl.GL_FLOAT, False, 9 * 4, ctypes.c_void_p(3 * 4))
gl.glEnableVertexAttribArray(1)
gl.glVertexAttribPointer(2, 3, gl.GL_FLOAT, False, 9 * 4, ctypes.c_void_p(6 * 4))
gl.glEnableVertexAttribArray(2)
element_buffer_object = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, element_buffer_object)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, index_data.nbytes, index_data, gl.GL_STATIC_DRAW)
diffuse = mesh.material.properties["diffuse"]
gl.glUniform4f(
gl.glGetUniformLocation(shader, "color"),
*diffuse,
1
)
gl.glUniform4f(
gl.glGetUniformLocation(shader, "light"),
int(lighting.x), int(lighting.y), int(lighting.z), 1
)
gl.glDrawElements(gl.GL_TRIANGLES, len(index_data), gl.GL_UNSIGNED_INT, None)
for child in node.children:
glize(child)
def initialize(self):
vertices = np.array(
[
0.5,
0.5,
0.0,
1.0,
0.0,
0.0,
0.55,
0.55, # top right
0.5,
-0.5,
0.0,
0.0,
1.0,
0.0,
0.55,
0.45, # bottom right
-0.5,
-0.5,
0.0,
0.0,
0.0,
1.0,
0.45,
0.45, # bottom left
-0.5,
0.5,
0.0,
1.0,
1.0,
0.0,
0.45,
0.55 # top left
],
dtype=np.float32)
indices = np.array([0, 1, 3, 1, 2, 3], dtype=np.uint32)
self._vao = GL.glGenVertexArrays(1)
GL.glBindVertexArray(self._vao)
vbo = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, vbo)
GL.glBufferData(GL.GL_ARRAY_BUFFER, vertices, GL.GL_STATIC_DRAW)
float_size = ctypes.sizeof(ctypes.c_float)
GL.glVertexAttribPointer(0, 3, GL.GL_FLOAT, GL.GL_FALSE,
8 * float_size, ctypes.c_void_p(0))
GL.glEnableVertexAttribArray(0)
GL.glVertexAttribPointer(1, 3, GL.GL_FLOAT,
GL.GL_FALSE, 8 * float_size,
ctypes.c_void_p(3 * float_size))
GL.glEnableVertexAttribArray(1)
GL.glVertexAttribPointer(2, 2, GL.GL_FLOAT,
GL.GL_FALSE, 8 * float_size,
ctypes.c_void_p(6 * float_size))
GL.glEnableVertexAttribArray(2)
ebo = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, ebo)
GL.glBufferData(GL.GL_ELEMENT_ARRAY_BUFFER, indices, GL.GL_STATIC_DRAW)
GL.glBindVertexArray(0)
self._texture = Texture2D("awesomeface.png",
flip_y=True,
wrap_s=GL.GL_REPEAT,
wrap_t=GL.GL_REPEAT,
min_filter=GL.GL_NEAREST,
mag_filter=GL.GL_NEAREST)
vertex_shader = Shader(GL.GL_VERTEX_SHADER,
"shaders_src/textures_vertex.glsl")
fragment_shader = Shader(GL.GL_FRAGMENT_SHADER,
"shaders_src/textures_frag.glsl")
self._shader_program = ShaderProgram(vertex_shader, fragment_shader)
vertex_shader.delete()
fragment_shader.delete()
def init_target() -> RenderTarget: # pragma: no cover
# Setting up VAO
vao = gl.glGenVertexArrays(1)
gl.glBindVertexArray(vao)
# Quad vertex buffer
vbo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
gl.glBufferData(gl.GL_ARRAY_BUFFER, QUAD_VERTS.nbytes, QUAD_VERTS,
gl.GL_DYNAMIC_DRAW)
gl.glEnableVertexAttribArray(0)
gl.glVertexAttribPointer(0, 2, gl.GL_FLOAT, gl.GL_FALSE, 0, None)
# Finish setting up VAO
gl.glBindVertexArray(0)
# Quad index buffer
ebo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, ebo)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, QUAD_IDX.nbytes, QUAD_IDX,
gl.GL_STATIC_DRAW)
# Regions data
world_ssbo = gl.glGenBuffers(1)
# Create shaders
vs_src, fs_src = __load_shaders()
vs = shaders.compileShader(vs_src, gl.GL_VERTEX_SHADER)
fs = shaders.compileShader(fs_src, gl.GL_FRAGMENT_SHADER)
program = shaders.compileProgram(vs, fs)
# Create target texture
render_texture = gl.glGenTextures(1)
gl.glBindTexture(gl.GL_TEXTURE_2D, render_texture)
gl.glTexImage2D(
gl.GL_TEXTURE_2D,
0, # level
gl.GL_RGBA, # internalFormat
1, # width
1, # height
0, # border
gl.GL_RGBA, # format
gl.GL_FLOAT, # type
None # data
)
gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER,
gl.GL_NEAREST)
gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER,
gl.GL_NEAREST)
# Create target framebuffer
# Create target framebuffer
render_fbo = gl.glGenFramebuffers(1)
gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, render_fbo)
gl.glFramebufferTexture2D(gl.GL_FRAMEBUFFER, gl.GL_COLOR_ATTACHMENT0,
gl.GL_TEXTURE_2D, render_texture, 0)
_validate_fbo_complete()
gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, 0)
return RenderTarget(
vao=vao,
vbo=vbo,
ebo=ebo,
world_ssbo=world_ssbo,
vertex_shader=vs,
fragment_shader=fs,
program=program,
indices=np.copy(QUAD_IDX),
render_fbo=render_fbo,
render_texture=render_texture,
)
def tiny_glut(args):
global vertex_code, fragment_code
scale = 0.01
def display():
CAMERA.render()
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
nonlocal scale
scale_location = gl.glGetUniformLocation(program, "gScale")
assert scale_location != 0xffffffff
world_location = gl.glGetUniformLocation(program, "gWorld")
assert world_location != 0xffffffff
scale += 0.01
pipeline = Pipeline(
rotation=[0.0, 30 * scale, 0.0],
# scaling=[math.sin(scale)] * 3,
translation=[0, 0, 6],
projection=ProjParams(WINDOW_WIDTH, WINDOW_HEIGHT, 1.0, 100.0,
60.0))
pipeline.set_camera(CAMERA)
gl.glUniformMatrix4fv(world_location, 1, gl.GL_TRUE,
pipeline.get_wvp())
gl.glDrawElements(gl.GL_TRIANGLES, 18, gl.GL_UNSIGNED_INT,
ctypes.c_void_p(0))
glut.glutSwapBuffers()
# glut.glutPostRedisplay()
def mouse(x, y):
CAMERA.mouse(x, y)
def keyboard(key, x, y):
if key == glut.GLUT_KEY_F1:
sys.exit(0)
elif key == glut.GLUT_KEY_HOME:
CAMERA.setup()
else:
CAMERA.keyboard(key)
glut.glutInit(args)
glut.glutInitDisplayMode(glut.GLUT_DOUBLE | glut.GLUT_RGBA
| glut.GLUT_3_2_CORE_PROFILE)
glut.glutInitWindowSize(WINDOW_WIDTH, WINDOW_HEIGHT)
glut.glutInitWindowPosition(400, 100)
# glut.glutCreateWindow("Camera Tutorial")
glut.glutGameModeString("1920x1200@32")
glut.glutEnterGameMode()
# callbacks initialization
glut.glutDisplayFunc(display)
glut.glutIdleFunc(display)
# glut.glutKeyboardFunc(keyboard)
glut.glutPassiveMotionFunc(mouse)
glut.glutSpecialFunc(keyboard)
gl.glEnable(gl.GL_DEPTH_TEST)
gl.glDepthFunc(gl.GL_LESS)
gl.glClearColor(0, 0, 0, 0)
vertices = np.array([-1, -1, 0, 0, -1, -1, 1, -1, 0, 0, -1, 1, 0, 1, 0],
dtype=np.float32)
indexes = np.array([0, 1, 2, 1, 2, 3, 0, 1, 4, 1, 2, 4, 2, 3, 4, 3, 0, 4],
dtype=np.uint32)
vertex_shader = gl.glCreateShader(gl.GL_VERTEX_SHADER)
gl.glShaderSource(vertex_shader, vertex_code)
gl.glCompileShader(vertex_shader)
if not gl.glGetShaderiv(vertex_shader, gl.GL_COMPILE_STATUS):
info = gl.glGetShaderInfoLog(vertex_shader)
print("vertex shader error occurred")
print(bytes.decode(info))
return
fragment_shader = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(fragment_shader, fragment_code)
gl.glCompileShader(fragment_shader)
if not gl.glGetShaderiv(fragment_shader, gl.GL_COMPILE_STATUS):
info = gl.glGetShaderInfoLog(fragment_shader)
print("fragment shader error occurred")
print(bytes.decode(info))
return
program = gl.glCreateProgram()
gl.glAttachShader(program, vertex_shader)
gl.glAttachShader(program, fragment_shader)
gl.glLinkProgram(program)
gl.glUseProgram(program)
vao = gl.glGenVertexArrays(1)
gl.glBindVertexArray(vao)
vbo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
gl.glBufferData(gl.GL_ARRAY_BUFFER, vertices.nbytes, vertices,
gl.GL_STATIC_DRAW)
gl.glEnableVertexAttribArray(0)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 0,
ctypes.c_void_p(0))
ibo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, ibo)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, indexes.nbytes, indexes,
gl.GL_STATIC_DRAW)
glut.glutMainLoop()
def initialize():
global shaderProgram
global VAO
global VBO
vertexShader = shaders.compileShader(
"""
#version 330
layout (location=0) in vec4 position;
layout (location=1) in vec4 colour;
smooth out vec4 theColour;
void main()
{
gl_Position = position;
theColour = colour;
}
""", GL.GL_VERTEX_SHADER)
fragmentShader = shaders.compileShader(
"""
#version 330
smooth in vec4 theColour;
out vec4 outputColour;
void main()
{
outputColour = theColour;
}
""", GL.GL_FRAGMENT_SHADER)
shaderProgram = shaders.compileProgram(vertexShader, fragmentShader)
vertexData = numpy.array(
[
# Vertex Positions
0.0,
0.5,
0.0,
1.0,
0.5,
-0.366,
0.0,
1.0,
-0.5,
-0.366,
0.0,
1.0,
# Vertex Colours
1.0,
0.0,
0.0,
1.0,
0.0,
1.0,
0.0,
1.0,
0.0,
0.0,
1.0,
1.0,
],
dtype=numpy.float32)
# Core OpenGL requires that at least one OpenGL vertex array be bound
VAO = GL.glGenVertexArrays(1)
GL.glBindVertexArray(VAO)
# Need VBO for triangle vertices and colours
VBO = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, VBO)
GL.glBufferData(GL.GL_ARRAY_BUFFER, vertexData.nbytes, vertexData,
GL.GL_STATIC_DRAW)
# enable array and set up data
GL.glEnableVertexAttribArray(0)
GL.glEnableVertexAttribArray(1)
GL.glVertexAttribPointer(0, 4, GL.GL_FLOAT, GL.GL_FALSE, 0, None)
# the last parameter is a pointer
GL.glVertexAttribPointer(1, 4, GL.GL_FLOAT, GL.GL_FALSE, 0,
ctypes.c_void_p(48))
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
GL.glBindVertexArray(0)
def data(self, data_size, data):
self.bind()
GL.glBufferData(self.target, data_size, data, self.usage)
gl.glDetachShader(program, fragment) # Make program the default program gl.glUseProgram(program) # Build buffer # -------------------------------------- # Request a buffer slot from GPU buffer = gl.glGenBuffers(1) # Make this buffer the default one gl.glBindBuffer(gl.GL_ARRAY_BUFFER, buffer) # Upload data gl.glBufferData(gl.GL_ARRAY_BUFFER, data.nbytes, data, gl.GL_DYNAMIC_DRAW) # Bind the position attribute # -------------------------------------- stride = data.strides[0] offset = ctypes.c_void_p(0) loc = gl.glGetAttribLocation(program, "position") gl.glEnableVertexAttribArray(loc) gl.glBindBuffer(gl.GL_ARRAY_BUFFER, buffer) gl.glVertexAttribPointer(loc, 2, gl.GL_FLOAT, False, stride, offset) # Upload the uniform color # -------------------------------------- loc = gl.glGetUniformLocation(program, "color") gl.glUniform4f(loc, 0.0, 0.0, 1.0, 1.0)
def main():
# glfw: initialize and configure
glfw.init()
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
# for Apple devices uncomment the following line
# glfw.window_hint(glfw.OPENGL_FORWARD_COMPAT, gl.GL_TRUE)
# glfw: window creation
window = glfw.create_window(SCR_WIDTH, SCR_HEIGHT, "Learn OpenGL", None,
None)
if window is None:
glfw.terminate()
raise Exception("Failed to create GLFW window")
glfw.make_context_current(window)
glfw.set_framebuffer_size_callback(window, framebuffer_size_callback)
# build and compile our shader program
# vertex shader
vertexShader = gl.glCreateShader(gl.GL_VERTEX_SHADER)
gl.glShaderSource(
vertexShader,
vertexShaderSource) # INFO: Changed method head in PyOpenGL
gl.glCompileShader(vertexShader)
# check for shader compile errors
success = gl.glGetShaderiv(vertexShader, gl.GL_COMPILE_STATUS)
if not success:
info_log = gl.glGetShaderInfoLog(vertexShader, 512, None)
raise Exception("ERROR::SHADER::VERTEX::COMPILATION_FAILED\n%s" %
info_log)
# fragment shader
fragmentShader = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(fragmentShader, fragmentShaderSource) # Changed!
gl.glCompileShader(fragmentShader)
# check for shader compile errors
success = gl.glGetShaderiv(fragmentShader, gl.GL_COMPILE_STATUS)
if not success:
info_log = gl.glGetShaderInfoLog(fragmentShader, 512, None)
raise Exception("ERROR::SHADER::FRAGMENT::COMPILATION_FAILED\n%s" %
info_log)
# link shaders
shaderProgram = gl.glCreateProgram()
gl.glAttachShader(shaderProgram, vertexShader)
gl.glAttachShader(shaderProgram, fragmentShader)
gl.glLinkProgram(shaderProgram)
# check for linking errors
success = gl.glGetProgramiv(shaderProgram, gl.GL_LINK_STATUS)
if not success:
info_log = gl.glGetProgramInfoLog(shaderProgram, 512, None)
raise Exception("ERROR::SHADER::PROGRAM::LINKING_FAILED\n%s" %
info_log)
gl.glDeleteShader(vertexShader)
gl.glDeleteShader(fragmentShader)
# set up vertex data (and buffer(s)) and configure vertex attributes
vertices = np.array(
[
0.5,
0.5,
0.0, # left
0.5,
-0.5,
0.0, # right
-0.5,
-0.5,
0.0, # top
-0.5,
0.5,
0.0
],
dtype=np.float32)
indices = np.array(
[ # note that we start from 0!
0,
1,
3, # first triangle
1,
2,
3 # second triangle
],
dtype=np.int32
) # INFO: Stored as np.array with float32 for compatibility
VAO = gl.glGenVertexArrays(1)
VBO = gl.glGenBuffers(1)
EBO = gl.glGenBuffers(1)
# bind the Vertex Array Object first, then bind and set vertex buffer(s), and then configure vertex attributes(s).
gl.glBindVertexArray(VAO)
# store vertices in buffer
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, VBO)
gl.glBufferData(gl.GL_ARRAY_BUFFER, vertices.nbytes, vertices,
gl.GL_STATIC_DRAW) # INFO: use np.array with nsize
# store indices in buffer
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, EBO)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, indices.nbytes, indices,
gl.GL_STATIC_DRAW)
# ToDo fix size of float
gl.glVertexAttribPointer(
0, 3, gl.GL_FLOAT, 3 * 4, 0,
c_void_p(0)) # INFO: replaced (gl.void*)0 with c_void_p
gl.glEnableVertexAttribArray(0)
# note that this is allowed, the call to glVertexAttribPointer registered VBO as the vertex attribute's bound vertex buffer object so afterwards we can safely unbind
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
# You can unbind the VAO afterwards so other VAO calls won't accidentally modify this VAO, but this rarely happens. Modifying other
# VAOs requires a call to glBindVertexArray anyways so we generally don't unbind VAOs (nor VBOs) when it's not directly necessary.
gl.glBindVertexArray(0)
gl.glPolygonMode(gl.GL_FRONT_AND_BACK,
gl.GL_LINE) # for activating wireframe mode
# main event loop
while not glfw.window_should_close(window):
# input
process_input(window)
# render
gl.glClearColor(0.2, 0.3, 0.3, 1.0)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
# draw our first triangle
gl.glUseProgram(shaderProgram)
gl.glBindVertexArray(VAO)
gl.glDrawElements(gl.GL_TRIANGLES, 6, gl.GL_UNSIGNED_INT, None)
# gl.glBindVertexArray(0) # no need to unbind it every time
# glfw: swap buffers and poll IO events (keys pressed/released, mouse moved etc.)
glfw.swap_buffers(window)
glfw.poll_events()
# optional: de-allocate all resources once they've outlived their purpose:
gl.glDeleteVertexArrays(1, VAO)
gl.glDeleteBuffers(1, VBO)
gl.glDeleteBuffers(1, EBO)
gl.glDeleteProgram(shaderProgram)
# glfw: terminate, clearing all previously allocated GLFW resources.
glfw.terminate()
return 0
def __init__(self, data):
self._vbo = gl.GLuint()
gl.glGenBuffers(1, self._vbo)
self.bind()
gl.glBufferData(self._buffer_type, data, gl.GL_STATIC_DRAW)
def init_gl_modern(display_size):
"""
Initialise open GL in the 'modern' open GL style for open GL versions
greater than 3.1.
:param display_size: Size of the window/viewport.
"""
# Create shaders
# --------------------------------------
vertex_code = """
uniform mat4 model;
uniform mat4 view;
uniform mat4 projection;
uniform vec4 colour_mul;
uniform vec4 colour_add;
attribute vec4 vertex_colour; // vertex colour in
attribute vec3 vertex_position;
varying vec4 vertex_shader_out; // vertex colour out
void main()
{
vertex_shader_out = (colour_mul * vertex_colour) + colour_add;
gl_Position = projection * view * model * vec4(vertex_position, 1.0);
}
"""
fragment_code = """
varying vec4 vertex_shader_out; // vertex colour from vertex shader
void main()
{
gl_FragColor = vertex_shader_out;
}
"""
program = GL.glCreateProgram()
vertex = GL.glCreateShader(GL.GL_VERTEX_SHADER)
fragment = GL.glCreateShader(GL.GL_FRAGMENT_SHADER)
GL.glShaderSource(vertex, vertex_code)
GL.glCompileShader(vertex)
GL.glAttachShader(program, vertex)
GL.glShaderSource(fragment, fragment_code)
GL.glCompileShader(fragment)
GL.glAttachShader(program, fragment)
GL.glLinkProgram(program)
GL.glDetachShader(program, vertex)
GL.glDetachShader(program, fragment)
GL.glUseProgram(program)
# Create vertex buffers and shader constants
# ------------------------------------------
# Cube Data
vertices = zeros(8, [("vertex_position", float32, 3),
("vertex_colour", float32, 4)])
vertices["vertex_position"] = [
[1, 1, 1],
[-1, 1, 1],
[-1, -1, 1],
[1, -1, 1],
[1, -1, -1],
[1, 1, -1],
[-1, 1, -1],
[-1, -1, -1],
]
vertices["vertex_colour"] = [
[0, 1, 1, 1],
[0, 0, 1, 1],
[0, 0, 0, 1],
[0, 1, 0, 1],
[1, 1, 0, 1],
[1, 1, 1, 1],
[1, 0, 1, 1],
[1, 0, 0, 1],
]
filled_cube_indices = array(
[
0,
1,
2,
0,
2,
3,
0,
3,
4,
0,
4,
5,
0,
5,
6,
0,
6,
1,
1,
6,
7,
1,
7,
2,
7,
4,
3,
7,
3,
2,
4,
7,
6,
4,
6,
5,
],
dtype=uint32,
)
outline_cube_indices = array(
[
0, 1, 1, 2, 2, 3, 3, 0, 4, 7, 7, 6, 6, 5, 5, 4, 0, 5, 1, 6, 2, 7,
3, 4
],
dtype=uint32,
)
shader_data = {"buffer": {}, "constants": {}}
GL.glBindVertexArray(GL.glGenVertexArrays(1)) # Have to do this first
shader_data["buffer"]["vertices"] = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, shader_data["buffer"]["vertices"])
GL.glBufferData(GL.GL_ARRAY_BUFFER, vertices.nbytes, vertices,
GL.GL_DYNAMIC_DRAW)
stride = vertices.strides[0]
offset = ctypes.c_void_p(0)
loc = GL.glGetAttribLocation(program, "vertex_position")
GL.glEnableVertexAttribArray(loc)
GL.glVertexAttribPointer(loc, 3, GL.GL_FLOAT, False, stride, offset)
offset = ctypes.c_void_p(vertices.dtype["vertex_position"].itemsize)
loc = GL.glGetAttribLocation(program, "vertex_colour")
GL.glEnableVertexAttribArray(loc)
GL.glVertexAttribPointer(loc, 4, GL.GL_FLOAT, False, stride, offset)
shader_data["buffer"]["filled"] = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER,
shader_data["buffer"]["filled"])
GL.glBufferData(
GL.GL_ELEMENT_ARRAY_BUFFER,
filled_cube_indices.nbytes,
filled_cube_indices,
GL.GL_STATIC_DRAW,
)
shader_data["buffer"]["outline"] = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER,
shader_data["buffer"]["outline"])
GL.glBufferData(
GL.GL_ELEMENT_ARRAY_BUFFER,
outline_cube_indices.nbytes,
outline_cube_indices,
GL.GL_STATIC_DRAW,
)
shader_data["constants"]["model"] = GL.glGetUniformLocation(
program, "model")
GL.glUniformMatrix4fv(shader_data["constants"]["model"], 1, False, eye(4))
shader_data["constants"]["view"] = GL.glGetUniformLocation(program, "view")
view = translate(eye(4), z=-6)
GL.glUniformMatrix4fv(shader_data["constants"]["view"], 1, False, view)
shader_data["constants"]["projection"] = GL.glGetUniformLocation(
program, "projection")
GL.glUniformMatrix4fv(shader_data["constants"]["projection"], 1, False,
eye(4))
# This colour is multiplied with the base vertex colour in producing
# the final output
shader_data["constants"]["colour_mul"] = GL.glGetUniformLocation(
program, "colour_mul")
GL.glUniform4f(shader_data["constants"]["colour_mul"], 1, 1, 1, 1)
# This colour is added on to the base vertex colour in producing
# the final output
shader_data["constants"]["colour_add"] = GL.glGetUniformLocation(
program, "colour_add")
GL.glUniform4f(shader_data["constants"]["colour_add"], 0, 0, 0, 0)
# Set GL drawing data
# -------------------
GL.glClearColor(0, 0, 0, 0)
GL.glPolygonOffset(1, 1)
GL.glEnable(GL.GL_LINE_SMOOTH)
GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA)
GL.glDepthFunc(GL.GL_LESS)
GL.glHint(GL.GL_LINE_SMOOTH_HINT, GL.GL_NICEST)
GL.glLineWidth(1.0)
projection = perspective(45.0, display_size[0] / float(display_size[1]),
2.0, 100.0)
GL.glUniformMatrix4fv(shader_data["constants"]["projection"], 1, False,
projection)
return shader_data, filled_cube_indices, outline_cube_indices
def main():
glfw.init()
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
window = glfw.create_window(SCR_WIDTH, SCR_HEIGHT, "LearnOpenGL", None,
None)
if window == 0:
print("Failed to create GLFW window")
glfw.terminate()
return -1
glfw.make_context_current(window)
glfw.set_framebuffer_size_callback(window, frame_size_callback)
vertexShader = gl.glCreateShader(gl.GL_VERTEX_SHADER)
gl.glShaderSource(vertexShader, vertexShaderSource)
gl.glCompileShader(vertexShader)
success = gl.glGetShaderiv(vertexShader, gl.GL_COMPILE_STATUS)
if not success:
infoLog = gl.glGetShaderInfoLog(vertexShader)
print("ERROR::SHADER::VERTEX::COMPILATION_FAILED\n", infoLog)
fragmentShader = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(fragmentShader, fragmentShaderSource)
gl.glCompileShader(fragmentShader)
success = gl.glGetShaderiv(fragmentShader, gl.GL_COMPILE_STATUS)
if not success:
infoLog = gl.glGetShaderInfoLog(fragmentShader)
print("ERROR::SHADER::FRAGMENT::COMPILATION_FAILED\n", infoLog)
shaderProgram = gl.glCreateProgram()
gl.glAttachShader(shaderProgram, vertexShader)
gl.glAttachShader(shaderProgram, fragmentShader)
gl.glLinkProgram(shaderProgram)
success = gl.glGetProgramiv(shaderProgram, gl.GL_LINK_STATUS)
if not success:
infoLog = gl.glGetProgramInfoLog(shaderProgram)
print("ERROR::SHADER::PROGRAM::LINKING_FAILED\n", infoLog)
gl.glDeleteShader(vertexShader)
gl.glDeleteShader(fragmentShader)
vertices = np.array(
[
-0.5,
-0.5,
0, # left
0.5,
-0.5,
0, # right
0,
0.5,
0 # top
],
dtype=np.float32)
VAO = gl.glGenVertexArrays(1)
VBO = gl.glGenBuffers(1)
gl.glBindVertexArray(VAO)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, VBO)
gl.glBufferData(gl.GL_ARRAY_BUFFER, sys.getsizeof(vertices), vertices,
gl.GL_STATIC_DRAW)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 12, None)
gl.glEnableVertexAttribArray(0)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
gl.glBindVertexArray(0)
while not glfw.window_should_close(window):
processInput(window)
gl.glClearColor(0.2, 0.3, 0.3, 1.0)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glUseProgram(shaderProgram)
gl.glBindVertexArray(VAO)
gl.glDrawArrays(gl.GL_TRIANGLES, 0, 3)
glfw.swap_buffers(window)
glfw.poll_events()
# gl.glDeleteVertexArrays(1, VAO) 这里有点问题。暂时不知道怎么解决
# gl.glDeleteBuffers(1, VBO)
glfw.terminate()
return 0
def __init__(
self,
img,
global_alpha=1.0,
apply_global_alpha=False,
srgb=True,
colour_mod=None,
):
self.i_tex = gl.glGenTextures(1)
self.set_img(img=img, srgb=srgb)
# set up the shader
i_vert = gl.glCreateShader(gl.GL_VERTEX_SHADER)
gl.glShaderSource(i_vert, vert_shader)
i_frag = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(i_frag, frag_shader)
self.program = gl.glCreateProgram()
gl.glAttachShader(self.program, i_vert)
gl.glAttachShader(self.program, i_frag)
gl.glCompileShader(i_vert)
gl.glCompileShader(i_frag)
gl.glLinkProgram(self.program)
gl.glValidateProgram(self.program)
gl.glUseProgram(self.program)
self.i_global_alpha = gl.glGetUniformLocation(self.program, "global_alpha")
self.i_apply_global_alpha = gl.glGetUniformLocation(
self.program, "apply_global_alpha"
)
self.i_colour_mod = gl.glGetUniformLocation(self.program, "colour_mod")
# set up the geometry
i_pos = gl.glGetAttribLocation(self.program, "pos")
self.i_vao = gl.glGenVertexArrays(1)
i_vbo = gl.glGenBuffers(1)
gl.glBindVertexArray(self.i_vao)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, i_vbo)
gl.glBufferData(
gl.GL_ARRAY_BUFFER, # target
points.nbytes, # size
points, # data
gl.GL_STATIC_DRAW, # usage
)
gl.glEnableVertexAttribArray(i_pos)
gl.glVertexAttribPointer(
i_pos, # index
2, # size
gl.GL_FLOAT, # type
gl.GL_FALSE, # normalisation
0, # stride
ctypes.c_void_p(0), # pointer
)
for param in "ST":
gl.glTexParameteri(
gl.GL_TEXTURE_2D,
getattr(gl, "GL_TEXTURE_WRAP_" + param),
gl.GL_CLAMP_TO_EDGE,
)
for param in ("MIN", "MAG"):
gl.glTexParameteri(
gl.GL_TEXTURE_2D,
getattr(gl, "GL_TEXTURE_" + param + "_FILTER"),
gl.GL_LINEAR,
)
gl.glTexParameterfv(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_BORDER_COLOR, np.zeros(4))
gl.glUseProgram(0)
self.global_alpha = global_alpha
self.apply_global_alpha = apply_global_alpha
if colour_mod is None:
self.colour_mod = (1.0,) * 3
def initializeGL(self):
log.info("OpenGL Vendor: {}".format(GL.glGetString(GL.GL_VENDOR)))
log.info("OpenGL Renderer: {}".format(GL.glGetString(GL.GL_RENDERER)))
log.info("OpenGL Version: {}".format(GL.glGetString(GL.GL_VERSION)))
for drawable in self.drawables:
drawable.initialise_gl()
return
self.texture = GL.glGenTextures(1)
self.shader_program.addShaderFromSourceCode(QOpenGLShader.Vertex,
VERTEX)
self.shader_program.addShaderFromSourceCode(QOpenGLShader.Fragment,
FRAGMENT)
if not self.shader_program.link():
raise Exception("Could not link shaders - {}".format(
self.shader_program.log()))
LOC = 1.0
vertexData = np.array(
[
# X, Y, Z U, V
-LOC,
LOC,
0.0,
0.0,
1.0,
LOC,
LOC,
0.0,
1.0,
1.0,
LOC,
-LOC,
0.0,
1.0,
0.0,
LOC,
-LOC,
0.0,
1.0,
0.0,
-LOC,
-LOC,
0.0,
0.0,
0.0,
-LOC,
LOC,
0.0,
0.0,
1.0,
],
dtype=np.float32)
self.VAO = GL.glGenVertexArrays(1)
GL.glBindVertexArray(self.VAO)
VBO = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, VBO)
GL.glBufferData(GL.GL_ARRAY_BUFFER, vertexData.nbytes, vertexData,
GL.GL_STATIC_DRAW)
vertex_position = self.shader_program.attributeLocation(
"vertexPosition")
self.homography_matrix_uniform = self.shader_program.uniformLocation(
"homography_matrix")
self.intensity_mask_uniform = self.shader_program.uniformLocation(
"intensity_mask")
self.inverted_uniform = self.shader_program.uniformLocation("inverted")
self.projection_matrix_uniform = self.shader_program.uniformLocation(
"projection_matrix")
self.view_matrix_uniform = self.shader_program.uniformLocation(
"view_matrix")
self.centre_x_uniform = self.shader_program.uniformLocation("centre_x")
self.centre_y_uniform = self.shader_program.uniformLocation("centre_y")
self.height_uniform = self.shader_program.uniformLocation("height")
self.shape_uniform = self.shader_program.uniformLocation("shape")
self.width_x_uniform = self.shader_program.uniformLocation("width_x")
self.width_y_uniform = self.shader_program.uniformLocation("width_y")
self.rotation_uniform = self.shader_program.uniformLocation("rotation")
GL.glEnableVertexAttribArray(0)
GL.glEnableVertexAttribArray(1)
GL.glVertexAttribPointer(vertex_position, 3, GL.GL_FLOAT, GL.GL_FALSE,
20, None)
GL.glVertexAttribPointer(texture_coords, 2, GL.GL_FLOAT, GL.GL_TRUE,
20, ctypes.c_void_p(12))
self.texture_sampler = self.shader_program.uniformLocation(
"textureSampler")
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
GL.glBindVertexArray(0)
self.crosshair.initialise_gl()
self.gl_initialised = True
def __init__(self, cubemap_img, alpha=1.0):
# set up the shader
self.i_tex = gl.glGenTextures(1)
self.cubemap_img = cubemap_img
i_vert = gl.glCreateShader(gl.GL_VERTEX_SHADER)
gl.glShaderSource(i_vert, vert_shader)
i_frag = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(i_frag, frag_shader)
self.program = gl.glCreateProgram()
gl.glAttachShader(self.program, i_vert)
gl.glAttachShader(self.program, i_frag)
gl.glCompileShader(i_vert)
gl.glCompileShader(i_frag)
gl.glLinkProgram(self.program)
gl.glValidateProgram(self.program)
gl.glUseProgram(self.program)
loc = gl.glGetUniformLocation(self.program, "cubemap")
gl.glUniform1i(loc, 0)
self.i_alpha = gl.glGetUniformLocation(self.program, "alpha")
gl.glUniform1i(loc, 0)
# set up the geometry
i_pos = gl.glGetAttribLocation(self.program, "pos")
self.i_vao = gl.glGenVertexArrays(1)
i_vbo = gl.glGenBuffers(1)
gl.glBindVertexArray(self.i_vao)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, i_vbo)
gl.glBufferData(
gl.GL_ARRAY_BUFFER, # target
vertices.nbytes, # size
vertices, # data
gl.GL_STATIC_DRAW, # usage
)
gl.glEnableVertexAttribArray(i_pos)
gl.glVertexAttribPointer(
i_pos, # index
3, # size
gl.GL_FLOAT, # type
gl.GL_FALSE, # normalisation
0, # stride
ctypes.c_void_p(0), # pointer
)
self.i_proj = gl.glGetUniformLocation(self.program, "projection")
self.i_view = gl.glGetUniformLocation(self.program, "view")
self.i_rotate = gl.glGetUniformLocation(self.program, "rotate")
# set the rotation matrix to null
self.set_rotate(rotate=np.eye(4).T)
gl.glUseProgram(0)
gl.glEnable(gl.GL_TEXTURE_CUBE_MAP_SEAMLESS)
for param in ("MIN", "MAG"):
gl.glTexParameteri(
gl.GL_TEXTURE_CUBE_MAP,
getattr(gl, "GL_TEXTURE_" + param + "_FILTER"),
gl.GL_LINEAR,
)
for param in "STR":
gl.glTexParameteri(
gl.GL_TEXTURE_CUBE_MAP,
getattr(gl, "GL_TEXTURE_WRAP_" + param),
gl.GL_CLAMP_TO_EDGE,
)
gl.glDepthFunc(gl.GL_LEQUAL)
self.alpha = alpha
# for some reason, the output is L-R flipped
# apply this adjustment to the view matrix to fix it
self.flip_mat = np.eye(4)
self.flip_mat[0, 0] = -1
self.flip_mat = self.flip_mat.T
def main():
# declare draw method so it can be reused during resizing
def draw():
gl.glClearColor(0.2, 0.3, 0.3, 1.0)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glUseProgram(shaderProgram)
gl.glBindVertexArray(VAO)
gl.glDrawElements(gl.GL_TRIANGLES, 3 * indices.shape[0],
gl.GL_UNSIGNED_INT, None)
gl.glBindVertexArray(VAO2)
gl.glDrawElements(gl.GL_TRIANGLES, 3 * indices2.shape[0],
gl.GL_UNSIGNED_INT, None)
gl.glBindVertexArray(0)
glfw.swap_buffers(window)
# declaring resize callback in main to allow access to variables
def window_size_callback(window, width, height):
gl.glViewport(0, 0, width, height)
# calling draw to allow drawing while resizing
draw()
# glfw: initialize and configure
glfw.init()
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
glfw.window_hint(glfw.OPENGL_PROFILE,
glfw.OPENGL_CORE_PROFILE) # No deprecated functions
glfw.window_hint(glfw.RESIZABLE, gl.GL_TRUE)
# checking if run on Mac OS X
if sys.platform == 'darwin':
glfw.window_hint(glfw.OPENGL_FORWARD_COMPAT, gl.GL_TRUE)
# glfw window creation
window = glfw.create_window(WIDTH, HEIGHT, 'LearnOpenGL', None,
None) # tutorial: (800, 600...
if window is None:
glfw.terminate()
raise Exception("ERROR: Failed to create GLFW window")
glfw.make_context_current(window)
glfw.set_key_callback(window, key_callback)
width, height = glfw.get_framebuffer_size(window)
glfw.set_window_size_callback(window, window_size_callback)
# build and compile shader program
# vertex shader
vertexShader = gl.glCreateShader(gl.GL_VERTEX_SHADER)
gl.glShaderSource(vertexShader, vertexShaderSource)
gl.glCompileShader(vertexShader)
if not gl.glGetShaderiv(vertexShader, gl.GL_COMPILE_STATUS):
infoLog = gl.glGetShaderInfoLog(vertexShader).decode()
raise Exception("ERROR::SHADER::VERTEX::COMPILATION_FAILED\n" +
infoLog)
# fragment shader
fragmentShader = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(fragmentShader, fragmentShaderSource)
gl.glCompileShader(fragmentShader)
if not gl.glGetShaderiv(fragmentShader, gl.GL_COMPILE_STATUS):
infoLog = gl.glGetShaderInfoLog(fragmentShader).decode()
raise Exception("ERROR::SHADER::FRAGMENT::COMPILATION_FAILED\n" +
infoLog)
# link shaders
shaderProgram = gl.glCreateProgram()
gl.glAttachShader(shaderProgram, vertexShader)
gl.glAttachShader(shaderProgram, fragmentShader)
gl.glLinkProgram(shaderProgram)
if not gl.glGetProgramiv(shaderProgram, gl.GL_LINK_STATUS):
infoLog = gl.glGetProgramInfoLog(shaderProgram).decode()
raise Exception("ERROR::SHADER::PROGRAM::LINKING_FAILED\n" + infoLog)
gl.glDeleteShader(vertexShader)
gl.glDeleteShader(fragmentShader)
# set up vertex data (and buffer(s)) and configure vertex attributes
vertices = np.array(
[
[0.5, 0.5, 0.0], # Left
[0.5, -0.5, 0.0], # Right
[-0.5, -0.5, 0.0],
[-0.5, 0.5, 0.0],
[1.0, -0.5, 0.0]
], # Top
dtype=np.float32)
indices = np.array(
[[3, 2, 1]], # first triangle
dtype=np.int32)
indices2 = np.array(
[[0, 1, 4]], # second triangle
dtype=np.int32)
VBO, VBO2, VAO, VAO2, EBO, EBO2 = gl.GLuint(), gl.GLuint(), gl.GLuint(
), gl.GLuint(), gl.GLuint(), gl.GLuint()
gl.glGenVertexArrays(1, VAO) # 1 -> 1 buffer to be generated
gl.glGenVertexArrays(1, VAO2)
gl.glGenBuffers(1, VBO)
gl.glGenBuffers(1, VBO2)
gl.glGenBuffers(1, EBO)
gl.glGenBuffers(1, EBO2)
# bind the Vertex Array Object first, then bind and set vertex buffer(s), and then configure vertex attributes(s)
# first set with VAO and VBO
gl.glBindVertexArray(VAO)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER,
VBO) # bind = make active/current for subsequent ops
gl.glBufferData(gl.GL_ARRAY_BUFFER, vertices, gl.GL_STATIC_DRAW)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, EBO)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, indices, gl.GL_STATIC_DRAW)
stride = vertices.itemsize * vertices.shape[1]
offset = gl.ctypes.c_void_p(vertices.itemsize * 0)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, stride, offset)
gl.glEnableVertexAttribArray(0) # location = 0
# second set with VAO2 and VBO2
gl.glBindVertexArray(VAO2)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER,
VBO2) # bind = make active/current for subsequent ops
gl.glBufferData(gl.GL_ARRAY_BUFFER, vertices, gl.GL_STATIC_DRAW)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, EBO2)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, indices2, gl.GL_STATIC_DRAW)
stride = vertices.itemsize * vertices.shape[1]
offset = gl.ctypes.c_void_p(vertices.itemsize * 0)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, stride, offset)
gl.glEnableVertexAttribArray(0) # location = 0
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
gl.glBindVertexArray(0)
# to put in wireframe mode
# gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_LINE)
# render loop
while not glfw.window_should_close(window):
glfw.poll_events()
draw()
glfw.terminate()
return 0
def main():
global delta_time, last_frame
if not glfw.init():
raise ValueError("Failed to initialize glfw")
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
window = glfw.create_window(SRC_WIDTH, SRC_HEIGHT, "learnOpenGL", None,
None)
if not window:
glfw.terminate()
raise ValueError("Failed to create window")
glfw.make_context_current(window)
glfw.set_framebuffer_size_callback(window, framebuffer_size_callback)
glfw.set_cursor_pos_callback(window, mouse_callback)
glfw.set_scroll_callback(window, scroll_callback)
glfw.set_input_mode(window, glfw.CURSOR, glfw.CURSOR_DISABLED)
gl.glEnable(gl.GL_DEPTH_TEST)
lamp_shader = Shader(CURDIR / "shaders/1.lamp.vs",
CURDIR / "shaders/1.lamp.fs")
lighting_shader = Shader(CURDIR / "shaders/2.2.basic_lighting.vs",
CURDIR / "shaders/2.2.basic_lighting.fs")
vertices = [
-0.5, -0.5, -0.5, 0.0, 0.0, -1.0, 0.5, -0.5, -0.5, 0.0, 0.0, -1.0, 0.5,
0.5, -0.5, 0.0, 0.0, -1.0, 0.5, 0.5, -0.5, 0.0, 0.0, -1.0, -0.5, 0.5,
-0.5, 0.0, 0.0, -1.0, -0.5, -0.5, -0.5, 0.0, 0.0, -1.0, -0.5, -0.5,
0.5, 0.0, 0.0, 1.0, 0.5, -0.5, 0.5, 0.0, 0.0, 1.0, 0.5, 0.5, 0.5, 0.0,
0.0, 1.0, 0.5, 0.5, 0.5, 0.0, 0.0, 1.0, -0.5, 0.5, 0.5, 0.0, 0.0, 1.0,
-0.5, -0.5, 0.5, 0.0, 0.0, 1.0, -0.5, 0.5, 0.5, -1.0, 0.0, 0.0, -0.5,
0.5, -0.5, -1.0, 0.0, 0.0, -0.5, -0.5, -0.5, -1.0, 0.0, 0.0, -0.5,
-0.5, -0.5, -1.0, 0.0, 0.0, -0.5, -0.5, 0.5, -1.0, 0.0, 0.0, -0.5, 0.5,
0.5, -1.0, 0.0, 0.0, 0.5, 0.5, 0.5, 1.0, 0.0, 0.0, 0.5, 0.5, -0.5, 1.0,
0.0, 0.0, 0.5, -0.5, -0.5, 1.0, 0.0, 0.0, 0.5, -0.5, -0.5, 1.0, 0.0,
0.0, 0.5, -0.5, 0.5, 1.0, 0.0, 0.0, 0.5, 0.5, 0.5, 1.0, 0.0, 0.0, -0.5,
-0.5, -0.5, 0.0, -1.0, 0.0, 0.5, -0.5, -0.5, 0.0, -1.0, 0.0, 0.5, -0.5,
0.5, 0.0, -1.0, 0.0, 0.5, -0.5, 0.5, 0.0, -1.0, 0.0, -0.5, -0.5, 0.5,
0.0, -1.0, 0.0, -0.5, -0.5, -0.5, 0.0, -1.0, 0.0, -0.5, 0.5, -0.5, 0.0,
1.0, 0.0, 0.5, 0.5, -0.5, 0.0, 1.0, 0.0, 0.5, 0.5, 0.5, 0.0, 1.0, 0.0,
0.5, 0.5, 0.5, 0.0, 1.0, 0.0, -0.5, 0.5, 0.5, 0.0, 1.0, 0.0, -0.5, 0.5,
-0.5, 0.0, 1.0, 0.0
]
vertices = (c_float * len(vertices))(*vertices)
cube_vao = gl.glGenVertexArrays(1)
vbo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
gl.glBufferData(gl.GL_ARRAY_BUFFER, sizeof(vertices), vertices,
gl.GL_STATIC_DRAW)
gl.glBindVertexArray(cube_vao)
# -- position attribute
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE,
6 * sizeof(c_float), c_void_p(0))
gl.glEnableVertexAttribArray(0)
# -- normal attribute
gl.glVertexAttribPointer(1, 3, gl.GL_FLOAT,
gl.GL_FALSE, 6 * sizeof(c_float),
c_void_p(3 * sizeof(c_float)))
gl.glEnableVertexAttribArray(1)
# -- second configure light vao (vbo is the same)
light_vao = gl.glGenVertexArrays(1)
gl.glBindVertexArray(light_vao)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE,
6 * sizeof(c_float), c_void_p(0))
gl.glEnableVertexAttribArray(0)
while not glfw.window_should_close(window):
# -- time logic
current_frame = glfw.get_time()
delta_time = current_frame - last_frame
last_frame = current_frame
# -- input
process_input(window)
# -- render
gl.glClearColor(0.1, 0.1, 0.1, 1.0)
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
lighting_shader.use()
lighting_shader.set_vec3("objectColor", Vector3([1.0, 0.5, 0.31]))
lighting_shader.set_vec3("lightColor", Vector3([1.0, 1.0, 1.0]))
lighting_shader.set_vec3("lightPos", light_pos)
lighting_shader.set_vec3("viewPos", camera.position)
# -- view.projection transformations
projection = Matrix44.perspective_projection(camera.zoom,
SRC_WIDTH / SRC_HEIGHT,
0.1, 100.0)
view = camera.get_view_matrix()
lighting_shader.set_mat4("projection", projection)
lighting_shader.set_mat4("view", view)
# -- world transformation
model = Matrix44.identity()
lighting_shader.set_mat4("model", model)
# -- render cube
gl.glBindVertexArray(cube_vao)
gl.glDrawArrays(gl.GL_TRIANGLES, 0, 36)
# -- draw lamp object
lamp_shader.use()
lamp_shader.set_mat4("projection", projection)
lamp_shader.set_mat4("view", view)
model = Matrix44.identity()
model *= Matrix44.from_translation(light_pos)
model *= Matrix44.from_scale(Vector3([.2, .2, .2]))
lamp_shader.set_mat4("model", model)
gl.glBindVertexArray(light_vao)
gl.glDrawArrays(gl.GL_TRIANGLES, 0, 36)
glfw.swap_buffers(window)
glfw.poll_events()
gl.glDeleteVertexArrays(1, id(cube_vao))
gl.glDeleteVertexArrays(1, id(light_vao))
gl.glDeleteBuffers(1, id(vbo))
glfw.terminate()
def initialize():
global shaderProgram
global VAO
global idxCnt
global texUnitUniform
global sampleTexture
vertexStaticShader = shaders.compileShader(
"""
#version 330 core
layout (location=0) in vec3 position;
layout (location=1) in vec3 aNormal;
uniform mat4 rot;
uniform mat4 translation;
uniform mat4 projection;
uniform mat4 view;
out vec3 theCoords;
out vec3 theNormal;
void main()
{
vec4 world = translation*rot*vec4((1*position), 1);
gl_Position = projection*view*world;
theCoords = 0.5*(vec3(1,1,1)+1*position);
theNormal = aNormal;
}
""", GL.GL_VERTEX_SHADER)
fragmentShader = shaders.compileShader(
"""
#version 330 core
uniform sampler3D texUnit;
in vec3 theCoords;
in vec3 theNormal;
uniform vec3 lightPos;
out vec4 outputColour;
float ambientStrenght;
float diff;
vec3 lightColor;
vec3 ambient;
vec3 norm;
vec3 lightDir;
vec3 diffuse;
void main()
{
// ambient
lightColor = vec3(1, 1, 1);
ambientStrenght = 1.0;
ambient = ambientStrenght * lightColor;
// diffusse
norm = normalize(theNormal);
lightDir = normalize(lightPos - theCoords);
diff = max(dot(norm, lightDir), 0.0);
diffuse = diff * lightColor;
// out
outputColour = vec4(diffuse+ambient, 1.0)*texture(texUnit, theCoords);
}
""", GL.GL_FRAGMENT_SHADER)
vertexData = np.array([
1.0,
-1.0,
-1.0,
0,
-1,
0,
1.0,
-1.0,
1.0,
0,
-1,
0,
-1.0,
-1.0,
1.0,
0,
-1,
0,
-1.0,
-1.0,
-1.0,
0,
-1,
0,
1.0,
1.0,
-1.0,
0,
1,
0,
1.0,
1.0,
1.0,
0,
1,
0,
-1.0,
1.0,
1.0,
0,
1,
0,
-1.0,
1.0,
-1.0,
0,
1,
0,
1.0,
-1.0,
-1.0,
1,
0,
0,
1.0,
-1.0,
1.0,
1,
0,
0,
1.0,
1.0,
-1.0,
1,
0,
0,
1.0,
1.0,
1.0,
1,
0,
0,
1.0,
-1.0,
-1.0,
0,
0,
-1,
-1.0,
-1.0,
-1.0,
0,
0,
-1,
1.0,
1.0,
-1.0,
0,
0,
-1,
-1.0,
1.0,
-1.0,
0,
0,
-1,
-1.0,
-1.0,
1.0,
-1,
0,
0,
-1.0,
-1.0,
-1.0,
-1,
0,
0,
-1.0,
1.0,
1.0,
-1,
0,
0,
-1.0,
1.0,
-1.0,
-1,
0,
0,
1.0,
-1.0,
1.0,
0,
0,
1,
-1.0,
-1.0,
1.0,
0,
0,
1,
1.0,
1.0,
1.0,
0,
0,
1,
-1.0,
1.0,
1.0,
0,
0,
1,
],
dtype=np.float32)
faceData = np.array([
1,
3,
0,
7,
5,
4,
22,
21,
20,
10,
9,
8,
12,
15,
14,
16,
19,
17,
1,
2,
3,
7,
6,
5,
22,
23,
21,
10,
11,
9,
12,
13,
15,
16,
18,
19,
],
dtype=np.uint32)
idxCnt = faceData.shape[0]
GL.glEnable(GL.GL_DEPTH_TEST)
GL.glDepthFunc(GL.GL_LEQUAL)
shaderProgram = shaders.compileProgram(vertexStaticShader, fragmentShader)
GL.glDeleteShader(vertexStaticShader)
GL.glDeleteShader(fragmentShader)
VAO = GL.glGenVertexArrays(1)
GL.glBindVertexArray(VAO)
# Need VBO for triangle vertices coordinates
VBO = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, VBO)
GL.glBufferData(GL.GL_ARRAY_BUFFER, vertexData.nbytes, vertexData,
GL.GL_STATIC_DRAW)
GL.glEnableVertexAttribArray(0)
GL.glVertexAttribPointer(0, 3, GL.GL_FLOAT, GL.GL_FALSE, stride,
vertex_offset)
GL.glVertexAttribPointer(1, 3, GL.GL_FLOAT, GL.GL_FALSE, stride,
normal_offset)
GL.glEnableVertexAttribArray(1)
IBO = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, IBO)
GL.glBufferData(GL.GL_ELEMENT_ARRAY_BUFFER, faceData.nbytes, faceData,
GL.GL_STATIC_DRAW)
# Finished
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
GL.glBindVertexArray(0)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, 0)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
GL.glBindVertexArray(0)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, 0)
# load texture and assign texture unit for shaders
sampleTexture = loadTexture(texture)
texUnitUniform = GL.glGetUniformLocation(shaderProgram, 'texUnit')
def load_line_buffer(self):
LOG.debug("load line buffer start")
start = time.time()
line_p = []
line_t = []
line_c = []
self.line_buffer_length = 0
self.add_lines_reference(line_p, line_c)
line_t += [0, 0, 0] * self.line_buffer_length
def segment_layer(time_, layer):
"""
Return the layer number plus the fraction of the layer completed.
"""
return layer.number + (time_ - layer.max_segment.start_time
) / layer.max_segment.duration
profile_start = time.time()
for layer in self.model:
layer_chunk_start = self.line_buffer_length
for segment in layer:
line_p += [
segment.start[0], segment.start[1], segment.start[2]
]
line_p += [segment.end[0], segment.end[1], segment.end[2]]
line_t += [
segment.start_time,
segment_layer(segment.start_time, layer), 0
]
line_t += [
segment.start_time + segment.duration,
segment_layer(segment.start_time + segment.duration,
layer), 0
]
self.line_buffer_length += 2 * len(layer)
self.model_layer_chunks.append(
[layer_chunk_start, self.line_buffer_length])
LOG.debug(
f"analyse model layer sizes {time.time() - profile_start:0.2f}")
model_lines_buffer_length = (self.model_layer_chunks[-1][1] -
self.model_layer_chunks[0][0])
line_c += self.model_channel_buffer[self.channel]
GL.glBindVertexArray(self.line_array)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.line_buffer_position)
GL.glBufferData(GL.GL_ARRAY_BUFFER, np.array(line_p, dtype='float32'),
GL.GL_STATIC_DRAW)
GL.glVertexAttribPointer(self.locations["vertex_position"], 3,
GL.GL_FLOAT, GL.GL_FALSE, 0, None)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.line_buffer_progress)
GL.glBufferData(GL.GL_ARRAY_BUFFER, np.array(line_t, dtype='float32'),
GL.GL_STATIC_DRAW)
GL.glVertexAttribPointer(self.locations["vertex_progress"], 3,
GL.GL_FLOAT, GL.GL_FALSE, 0, None)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.line_buffer_color)
GL.glBufferData(GL.GL_ARRAY_BUFFER, np.array(line_c, dtype='float32'),
GL.GL_STATIC_DRAW)
GL.glVertexAttribPointer(self.locations["vertex_color"], 3,
GL.GL_FLOAT, GL.GL_FALSE, 0, None)
duration = time.time() - start
LOG.debug(f"load line buffer end {duration:0.2f}")
GLUT.glutPostRedisplay()
def main():
glfw.init()
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
window = glfw.create_window(800, 600, "LearnOpenGL", None, None)
if not window:
print("Window Creation failed!")
glfw.terminate()
glfw.make_context_current(window)
glfw.set_window_size_callback(window, on_resize)
shader = Shader(CURDIR / 'shaders/4.1.texture.vs',
CURDIR / 'shaders/4.1.texture.fs')
shader_mix = Shader(CURDIR / 'shaders/4.1.texture.vs',
CURDIR / 'shaders/4.1.texture_mix.fs')
vertices = [
# positions colors tex_coords
0.5,
0.5,
0.0,
1.0,
0.0,
0.0,
1.0,
1.0, # top right
0.5,
-0.5,
0.0,
0.0,
1.0,
0.0,
1.0,
0.0, # bottom right
-0.5,
-0.5,
0.0,
0.0,
0.0,
1.0,
0.0,
0.0, # bottom left
-0.5,
0.5,
0.0,
1.0,
1.0,
0.0,
0.0,
1.0, # top left
]
vertices = (c_float * len(vertices))(*vertices)
indices = [0, 1, 3, 1, 2, 3]
indices = (c_uint * len(indices))(*indices)
vao = gl.glGenVertexArrays(1)
gl.glBindVertexArray(vao)
vbo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
gl.glBufferData(gl.GL_ARRAY_BUFFER, sizeof(vertices), vertices,
gl.GL_STATIC_DRAW)
ebo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, ebo)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices,
gl.GL_STATIC_DRAW)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE,
8 * sizeof(c_float), c_void_p(0))
gl.glEnableVertexAttribArray(0)
gl.glVertexAttribPointer(1, 3, gl.GL_FLOAT,
gl.GL_FALSE, 8 * sizeof(c_float),
c_void_p(3 * sizeof(c_float)))
gl.glEnableVertexAttribArray(1)
gl.glVertexAttribPointer(2, 2, gl.GL_FLOAT,
gl.GL_FALSE, 8 * sizeof(c_float),
c_void_p(6 * sizeof(c_float)))
gl.glEnableVertexAttribArray(2)
# -- load texture
texture = gl.glGenTextures(1)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture)
# -- texture wrapping
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_S, gl.GL_REPEAT)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_T, gl.GL_REPEAT)
# -- texture filterting
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER,
gl.GL_LINEAR_MIPMAP_LINEAR)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
img = Image.open(Tex('container.jpg'))
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB, img.width, img.height, 0,
gl.GL_RGB, gl.GL_UNSIGNED_BYTE, img.tobytes())
gl.glGenerateMipmap(gl.GL_TEXTURE_2D)
while not glfw.window_should_close(window):
process_input(window)
gl.glClearColor(.2, .3, .3, 1.0)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture)
shader.use()
# -- uncomment to see mixture of vertex color and texture color
# shader_mix.use()
gl.glBindVertexArray(vao)
gl.glDrawElements(gl.GL_TRIANGLES, 6, gl.GL_UNSIGNED_INT, c_void_p(0))
glfw.poll_events()
glfw.swap_buffers(window)
gl.glDeleteVertexArrays(1, id(vao))
gl.glDeleteBuffers(1, id(vbo))
gl.glDeleteBuffers(1, id(ebo))
glfw.terminate()
def render(self, draw_data):
# perf: local for faster access
io = self.io
display_width, display_height = self.io.display_size
fb_width = int(display_width * io.display_fb_scale[0])
fb_height = int(display_height * io.display_fb_scale[1])
if fb_width == 0 or fb_height == 0:
return
draw_data.scale_clip_rects(*io.display_fb_scale)
# backup GL state
# todo: provide cleaner version of this backup-restore code
last_program = gl.glGetIntegerv(gl.GL_CURRENT_PROGRAM)
last_texture = gl.glGetIntegerv(gl.GL_TEXTURE_BINDING_2D)
last_active_texture = gl.glGetIntegerv(gl.GL_ACTIVE_TEXTURE)
last_array_buffer = gl.glGetIntegerv(gl.GL_ARRAY_BUFFER_BINDING)
last_element_array_buffer = gl.glGetIntegerv(
gl.GL_ELEMENT_ARRAY_BUFFER_BINDING)
last_vertex_array = gl.glGetIntegerv(gl.GL_VERTEX_ARRAY_BINDING)
last_blend_src = gl.glGetIntegerv(gl.GL_BLEND_SRC)
last_blend_dst = gl.glGetIntegerv(gl.GL_BLEND_DST)
last_blend_equation_rgb = gl.glGetIntegerv(gl.GL_BLEND_EQUATION_RGB)
last_blend_equation_alpha = gl.glGetIntegerv(
gl.GL_BLEND_EQUATION_ALPHA)
last_viewport = gl.glGetIntegerv(gl.GL_VIEWPORT)
last_scissor_box = gl.glGetIntegerv(gl.GL_SCISSOR_BOX)
last_enable_blend = gl.glIsEnabled(gl.GL_BLEND)
last_enable_cull_face = gl.glIsEnabled(gl.GL_CULL_FACE)
last_enable_depth_test = gl.glIsEnabled(gl.GL_DEPTH_TEST)
last_enable_scissor_test = gl.glIsEnabled(gl.GL_SCISSOR_TEST)
gl.glEnable(gl.GL_BLEND)
gl.glBlendEquation(gl.GL_FUNC_ADD)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glDisable(gl.GL_CULL_FACE)
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glEnable(gl.GL_SCISSOR_TEST)
gl.glActiveTexture(gl.GL_TEXTURE0)
gl.glViewport(0, 0, int(fb_width), int(fb_height))
ortho_projection = [[2.0 / display_width, 0.0, 0.0, 0.0],
[0.0, 2.0 / -display_height, 0.0, 0.0],
[0.0, 0.0, -1.0, 0.0], [-1.0, 1.0, 0.0, 1.0]]
gl.glUseProgram(self._shader_handle)
gl.glUniform1i(self._attrib_location_tex, 0)
gl.glUniformMatrix4fv(self._attrib_proj_mtx, 1, gl.GL_FALSE,
ortho_projection)
gl.glBindVertexArray(self._vao_handle)
for commands in draw_data.commands_lists:
idx_buffer_offset = 0
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._vbo_handle)
# todo: check this (sizes)
gl.glBufferData(gl.GL_ARRAY_BUFFER,
commands.vtx_buffer_size * imgui.VERTEX_SIZE,
ctypes.c_void_p(commands.vtx_buffer_data),
gl.GL_STREAM_DRAW)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, self._elements_handle)
# todo: check this (sizes)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER,
commands.idx_buffer_size * imgui.INDEX_SIZE,
ctypes.c_void_p(commands.idx_buffer_data),
gl.GL_STREAM_DRAW)
# todo: allow to iterate over _CmdList
for command in commands.commands:
gl.glBindTexture(gl.GL_TEXTURE_2D, command.texture_id)
# todo: use named tuple
x, y, w, z = command.clip_rect
gl.glScissor(int(x), int(fb_height - w), int(z - x),
int(w - y))
if imgui.INDEX_SIZE == 2:
gltype = gl.GL_UNSIGNED_SHORT
else:
gltype = gl.GL_UNSIGNED_INT
gl.glDrawElements(gl.GL_TRIANGLES, command.elem_count, gltype,
ctypes.c_void_p(idx_buffer_offset))
idx_buffer_offset += command.elem_count * imgui.INDEX_SIZE
# restore modified GL state
gl.glUseProgram(last_program)
gl.glActiveTexture(last_active_texture)
gl.glBindTexture(gl.GL_TEXTURE_2D, last_texture)
gl.glBindVertexArray(last_vertex_array)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, last_array_buffer)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer)
gl.glBlendEquationSeparate(last_blend_equation_rgb,
last_blend_equation_alpha)
gl.glBlendFunc(last_blend_src, last_blend_dst)
if last_enable_blend:
gl.glEnable(gl.GL_BLEND)
else:
gl.glDisable(gl.GL_BLEND)
if last_enable_cull_face:
gl.glEnable(gl.GL_CULL_FACE)
else:
gl.glDisable(gl.GL_CULL_FACE)
if last_enable_depth_test:
gl.glEnable(gl.GL_DEPTH_TEST)
else:
gl.glDisable(gl.GL_DEPTH_TEST)
if last_enable_scissor_test:
gl.glEnable(gl.GL_SCISSOR_TEST)
else:
gl.glDisable(gl.GL_SCISSOR_TEST)
gl.glViewport(last_viewport[0], last_viewport[1], last_viewport[2],
last_viewport[3])
gl.glScissor(last_scissor_box[0], last_scissor_box[1],
last_scissor_box[2], last_scissor_box[3])
def __init__(self, vec1:mmath.Vec3, vec2:mmath.Vec3, vec3:mmath.Vec3, vec4:mmath.Vec3,
vec5:mmath.Vec3, vec6:mmath.Vec3, vec7:mmath.Vec3, vec8:mmath.Vec3,
textureId:int, textureVerNum_f:float, textureHorNum_f:float, shininess:float, specularStrength:float,
startPos_l:list):
super().__init__()
self.renderFlag = True
self.vertices_l = [vec1, vec2, vec3, vec4, vec5, vec6, vec7, vec8]
self.textureId = textureId
self.textureVerNum_f = float(textureVerNum_f)
self.textureHorNum_f = float(textureHorNum_f)
self.shininess_f = float(shininess)
self.specularStrength_f = float(specularStrength)
self.pos_l = startPos_l
self.selectedTexId = self.textureId
self.textureId2 = None
self.collideModels_l.append( co.AabbActor(vec3, vec5, self) )
#self.collideModels_l.append()
#### ####
self.vao = gl.glGenVertexArrays(1)
gl.glBindVertexArray(self.vao)
vertices = np.array([*vec1.getXYZ(),
*vec2.getXYZ(),
*vec3.getXYZ(),
*vec1.getXYZ(),
*vec3.getXYZ(),
*vec4.getXYZ(),
*vec2.getXYZ(),
*vec6.getXYZ(),
*vec7.getXYZ(),
*vec2.getXYZ(),
*vec7.getXYZ(),
*vec3.getXYZ(),
*vec3.getXYZ(),
*vec7.getXYZ(),
*vec8.getXYZ(),
*vec3.getXYZ(),
*vec8.getXYZ(),
*vec4.getXYZ(),
*vec4.getXYZ(),
*vec8.getXYZ(),
*vec5.getXYZ(),
*vec4.getXYZ(),
*vec5.getXYZ(),
*vec1.getXYZ(),
*vec1.getXYZ(),
*vec5.getXYZ(),
*vec6.getXYZ(),
*vec1.getXYZ(),
*vec6.getXYZ(),
*vec2.getXYZ(),
*vec8.getXYZ(),
*vec7.getXYZ(),
*vec6.getXYZ(),
*vec8.getXYZ(),
*vec6.getXYZ(),
*vec5.getXYZ()], dtype=np.float32)
size = vertices.size * vertices.itemsize
self.vertexSize_i = vertices.size
self.verticesBuffer = gl.glGenBuffers(1) # Create a buffer.
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.verticesBuffer) # Bind the buffer.
gl.glBufferData(gl.GL_ARRAY_BUFFER, size, vertices, gl.GL_STATIC_DRAW) # Allocate memory.
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 0, None) # Defines vertex attributes. What are those?
gl.glEnableVertexAttribArray(0)
#### Texture Coord ####
textureCoords = np.array([0, 1,
0, 0,
1, 0,
0, 1,
1, 0,
1, 1,
0, 1,
0, 0,
1, 0,
0, 1,
1, 0,
1, 1,
0, 1,
0, 0,
1, 0,
0, 1,
1, 0,
1, 1,
0, 1,
0, 0,
1, 0,
0, 1,
1, 0,
1, 1,
0, 1,
0, 0,
1, 0,
0, 1,
1, 0,
1, 1,
0, 1,
0, 0,
1, 0,
0, 1,
1, 0,
1, 1], dtype=np.float32)
size = textureCoords.size * textureCoords.itemsize
self.texCoordBuffer = gl.glGenBuffers(1) # Create a buffer.
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.texCoordBuffer) # Bind the buffer.
gl.glBufferData(gl.GL_ARRAY_BUFFER, size, textureCoords, gl.GL_STATIC_DRAW) # Allocate memory.
gl.glVertexAttribPointer(1, 2, gl.GL_FLOAT, gl.GL_FALSE, 0, None) # Defines vertex attributes. What are those?
gl.glEnableVertexAttribArray(1)
gl.glCompileShader(vs)
prgrm = gl.glCreateProgram()
gl.glAttachShader(prgrm, vs)
gl.glAttachShader(prgrm, fs)
gl.glLinkProgram(prgrm)
gl.glUseProgram(prgrm)
# create buffers
vbo = gl.glGenBuffers(1)
test1_ibo = gl.glGenBuffers(1)
test2_ibo = gl.glGenBuffers(1)
test3_ibo = gl.glGenBuffers(1)
# push consecutive data
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
gl.glBufferData(gl.GL_ARRAY_BUFFER, points.itemsize * points.size, points,
gl.GL_DYNAMIC_DRAW)
# set attribute pointer
gl.glEnableVertexAttribArray(0)
gl.glVertexAttribPointer(index=0,
size=4,
type=gl.GL_FLOAT,
normalized=gl.GL_FALSE,
stride=32,
pointer=ctypes.c_void_p(0))
gl.glEnableVertexAttribArray(1)
gl.glVertexAttribPointer(index=1,
size=4,
type=gl.GL_FLOAT,
normalized=gl.GL_FALSE,
stride=32,
pointer=ctypes.c_void_p(16))
def main():
glfw.init()
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
window = glfw.create_window(800, 600, "LearnOpenGL", None, None)
if not window:
print("Window Creation failed!")
glfw.terminate()
glfw.make_context_current(window)
glfw.set_window_size_callback(window, on_resize)
shader = Shader(CURDIR / 'shaders/5.1.transform.vs', CURDIR / 'shaders/5.1.transform.fs')
vertices = [
# positions tex_coords
0.5, 0.5, 0.0, 1.0, 1.0, # top right
0.5, -0.5, 0.0, 1.0, 0.0, # bottom right
-0.5, -0.5, 0.0, 0.0, 0.0, # bottom left
-0.5, 0.5, 0.0, 0.0, 1.0, # top left
]
vertices = (c_float * len(vertices))(*vertices)
indices = [
0, 1, 3,
1, 2, 3
]
indices = (c_uint * len(indices))(*indices)
vao = gl.glGenVertexArrays(1)
gl.glBindVertexArray(vao)
vbo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
gl.glBufferData(gl.GL_ARRAY_BUFFER, sizeof(vertices), vertices, gl.GL_STATIC_DRAW)
ebo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, ebo)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, gl.GL_STATIC_DRAW)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 5 * sizeof(c_float), c_void_p(0))
gl.glEnableVertexAttribArray(0)
gl.glVertexAttribPointer(1, 2, gl.GL_FLOAT, gl.GL_FALSE, 5 * sizeof(c_float), c_void_p(3 * sizeof(c_float)))
gl.glEnableVertexAttribArray(1)
# -- load texture 1
texture1 = gl.glGenTextures(1)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture1)
# -- texture wrapping
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_S, gl.GL_REPEAT)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_T, gl.GL_REPEAT)
# -- texture filterting
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
img = Image.open(Tex('container.jpg')).transpose(Image.FLIP_TOP_BOTTOM)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB, img.width, img.height, 0, gl.GL_RGB, gl.GL_UNSIGNED_BYTE, img.tobytes())
gl.glGenerateMipmap(gl.GL_TEXTURE_2D)
# -- load texture 2
texture2 = gl.glGenTextures(1)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture2)
# -- texture wrapping
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_S, gl.GL_REPEAT)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_T, gl.GL_REPEAT)
# -- texture filterting
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
img = Image.open(Tex('awesomeface.png')).transpose(Image.FLIP_TOP_BOTTOM)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB, img.width, img.height, 0, gl.GL_RGBA, gl.GL_UNSIGNED_BYTE, img.tobytes())
gl.glGenerateMipmap(gl.GL_TEXTURE_2D)
shader.use()
shader.set_int("texture1", 0)
shader.set_int("texture2", 1)
while not glfw.window_should_close(window):
process_input(window)
gl.glClearColor(.2, .3, .3, 1.0)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glActiveTexture(gl.GL_TEXTURE0)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture1)
gl.glActiveTexture(gl.GL_TEXTURE1)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture2)
translation = Matrix44.from_translation([0.5, -0.5, 0.0])
rotation = Matrix44.from_z_rotation(glfw.get_time())
transform = translation * rotation
shader.use()
shader.set_mat4('transform', transform)
gl.glBindVertexArray(vao)
gl.glDrawElements(gl.GL_TRIANGLES, 6, gl.GL_UNSIGNED_INT, c_void_p(0))
# -- second container
translation = Matrix44.from_translation([-0.5, 0.5, 0.0])
scale = Matrix44.from_scale([math.sin(glfw.get_time())]*3)
transform = translation * scale
shader.set_mat4('transform', transform)
gl.glDrawElements(gl.GL_TRIANGLES, 6, gl.GL_UNSIGNED_INT, c_void_p(0))
glfw.poll_events()
glfw.swap_buffers(window)
gl.glDeleteVertexArrays(1, id(vao))
gl.glDeleteBuffers(1, id(vbo))
gl.glDeleteBuffers(1, id(ebo))
glfw.terminate()
def main():
global delta_time, last_frame
glfw.init()
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
window = glfw.create_window(width, height, "LearnOpenGL", None, None)
if not window:
print("Window Creation failed!")
glfw.terminate()
glfw.make_context_current(window)
glfw.set_window_size_callback(window, on_resize)
gl.glEnable(gl.GL_DEPTH_TEST)
shader = Shader(CURDIR / 'shaders/6.1.coordinate_systems.vs',
CURDIR / 'shaders/6.1.coordinate_systems.fs')
vertices = [
# positions tex_coords
-0.5,
-0.5,
-0.5,
0.0,
0.0,
0.5,
-0.5,
-0.5,
1.0,
0.0,
0.5,
0.5,
-0.5,
1.0,
1.0,
0.5,
0.5,
-0.5,
1.0,
1.0,
-0.5,
0.5,
-0.5,
0.0,
1.0,
-0.5,
-0.5,
-0.5,
0.0,
0.0,
-0.5,
-0.5,
0.5,
0.0,
0.0,
0.5,
-0.5,
0.5,
1.0,
0.0,
0.5,
0.5,
0.5,
1.0,
1.0,
0.5,
0.5,
0.5,
1.0,
1.0,
-0.5,
0.5,
0.5,
0.0,
1.0,
-0.5,
-0.5,
0.5,
0.0,
0.0,
-0.5,
0.5,
0.5,
1.0,
0.0,
-0.5,
0.5,
-0.5,
1.0,
1.0,
-0.5,
-0.5,
-0.5,
0.0,
1.0,
-0.5,
-0.5,
-0.5,
0.0,
1.0,
-0.5,
-0.5,
0.5,
0.0,
0.0,
-0.5,
0.5,
0.5,
1.0,
0.0,
0.5,
0.5,
0.5,
1.0,
0.0,
0.5,
0.5,
-0.5,
1.0,
1.0,
0.5,
-0.5,
-0.5,
0.0,
1.0,
0.5,
-0.5,
-0.5,
0.0,
1.0,
0.5,
-0.5,
0.5,
0.0,
0.0,
0.5,
0.5,
0.5,
1.0,
0.0,
-0.5,
-0.5,
-0.5,
0.0,
1.0,
0.5,
-0.5,
-0.5,
1.0,
1.0,
0.5,
-0.5,
0.5,
1.0,
0.0,
0.5,
-0.5,
0.5,
1.0,
0.0,
-0.5,
-0.5,
0.5,
0.0,
0.0,
-0.5,
-0.5,
-0.5,
0.0,
1.0,
-0.5,
0.5,
-0.5,
0.0,
1.0,
0.5,
0.5,
-0.5,
1.0,
1.0,
0.5,
0.5,
0.5,
1.0,
0.0,
0.5,
0.5,
0.5,
1.0,
0.0,
-0.5,
0.5,
0.5,
0.0,
0.0,
-0.5,
0.5,
-0.5,
0.0,
1.0
]
vertices = (c_float * len(vertices))(*vertices)
cube_positions = [(0.0, 0.0, 0.0), (2.0, 5.0, -15.0), (-1.5, -2.2, -2.5),
(-3.8, -2.0, -12.3), (2.4, -0.4, -3.5),
(-1.7, 3.0, -7.5), (1.3, -2.0, -2.5), (1.5, 2.0, -2.5),
(1.5, 0.2, -1.5), (-1.3, 1.0, -1.5)]
vao = gl.glGenVertexArrays(1)
gl.glBindVertexArray(vao)
vbo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
gl.glBufferData(gl.GL_ARRAY_BUFFER, sizeof(vertices), vertices,
gl.GL_STATIC_DRAW)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE,
5 * sizeof(c_float), c_void_p(0))
gl.glEnableVertexAttribArray(0)
gl.glVertexAttribPointer(1, 2, gl.GL_FLOAT,
gl.GL_FALSE, 5 * sizeof(c_float),
c_void_p(3 * sizeof(c_float)))
gl.glEnableVertexAttribArray(1)
# -- load texture 1
texture1 = gl.glGenTextures(1)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture1)
# -- texture wrapping
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_S, gl.GL_REPEAT)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_T, gl.GL_REPEAT)
# -- texture filterting
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
img = Image.open(Tex('container.jpg')).transpose(Image.FLIP_TOP_BOTTOM)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB, img.width, img.height, 0,
gl.GL_RGB, gl.GL_UNSIGNED_BYTE, img.tobytes())
gl.glGenerateMipmap(gl.GL_TEXTURE_2D)
# -- load texture 2
texture2 = gl.glGenTextures(1)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture2)
# -- texture wrapping
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_S, gl.GL_REPEAT)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_T, gl.GL_REPEAT)
# -- texture filterting
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
img = Image.open(Tex('awesomeface.png'))
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB, img.width, img.height, 0,
gl.GL_RGBA, gl.GL_UNSIGNED_BYTE, img.tobytes())
gl.glGenerateMipmap(gl.GL_TEXTURE_2D)
shader.use()
shader.set_int("texture1", 0)
shader.set_int("texture2", 1)
projection = Matrix44.perspective_projection(45, width / height, 0.1,
100.0)
shader.set_mat4('projection', projection)
while not glfw.window_should_close(window):
current_frame = glfw.get_time()
delta_time = current_frame - last_frame
last_frame = current_frame
process_input(window)
gl.glClearColor(.2, .3, .3, 1.0)
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
gl.glActiveTexture(gl.GL_TEXTURE0)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture1)
gl.glActiveTexture(gl.GL_TEXTURE1)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture2)
shader.use()
view = Matrix44.look_at(camera_pos, camera_pos + camera_front,
camera_up)
shader.set_mat4('view', view)
gl.glBindVertexArray(vao)
for idx, position in enumerate(cube_positions):
angle = 20.0 * idx
rotation = matrix44.create_from_axis_rotation([1.0, 0.3, 0.5],
math.radians(angle))
translation = Matrix44.from_translation(position)
model = translation * rotation
shader.set_mat4('model', model)
gl.glDrawArrays(gl.GL_TRIANGLES, 0, 36)
glfw.poll_events()
glfw.swap_buffers(window)
gl.glDeleteVertexArrays(1, id(vao))
gl.glDeleteBuffers(1, id(vbo))
glfw.terminate()
def run():
if sdl2.SDL_Init(sdl2.SDL_INIT_VIDEO) != 0:
print(sdl2.SDL_GetError())
return -1
window = sdl2.SDL_CreateWindow(b"OpenGL demo",
sdl2.SDL_WINDOWPOS_UNDEFINED,
sdl2.SDL_WINDOWPOS_UNDEFINED, 800, 600,
sdl2.SDL_WINDOW_OPENGL)
if not window:
print(sdl2.SDL_GetError())
return -1
# Force OpenGL 3.3 'core' context.
# Must set *before* creating GL context!
video.SDL_GL_SetAttribute(video.SDL_GL_CONTEXT_MAJOR_VERSION, 3)
video.SDL_GL_SetAttribute(video.SDL_GL_CONTEXT_MINOR_VERSION, 3)
video.SDL_GL_SetAttribute(video.SDL_GL_CONTEXT_PROFILE_MASK,
video.SDL_GL_CONTEXT_PROFILE_CORE)
context = sdl2.SDL_GL_CreateContext(window)
quad = [-0.5, -0.5, 0.0, 1.0, 0.0, 0.0,
0.5, -0.5, 0.0, 0.0, 1.0, 0.0,
0.5, 0.5, 0.0, 0.0, 0.0, 1.0,
-0.5, 0.5, 0.0, 1.0, 1.0, 1.0]
quad = numpy.array(quad, dtype=numpy.float32)
indices = [0, 1, 2,
2, 3, 0]
indices = numpy.array(indices, dtype=numpy.uint32)
# Setup GL shaders, data, etc.
vertex_shader = shaders.compileShader("""
#version 330
in vec3 position;
in vec3 color;
out vec3 newColor;
void main()
{
gl_Position = vec4(position, 1.0f);
newColor = color;
}
"""
, GL.GL_VERTEX_SHADER)
fragment_shader = shaders.compileShader("""
#version 330
in vec3 newColor;
out vec4 outColor;
void main()
{
outColor = vec4(newColor, 1.0f);
}
"""
, GL.GL_FRAGMENT_SHADER)
shaderProgram = shaders.compileProgram(vertex_shader, fragment_shader)
GL.glUseProgram(shaderProgram)
# Need VBO for triangle vertices and colours
VBO = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, VBO)
GL.glBufferData(GL.GL_ARRAY_BUFFER, 96, quad, GL.GL_STATIC_DRAW)
EBO = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, EBO)
GL.glBufferData(GL.GL_ELEMENT_ARRAY_BUFFER, 24, indices, GL.GL_STATIC_DRAW)
position = GL.glGetAttribLocation(shaderProgram, "position")
GL.glVertexAttribPointer(position, 3, GL.GL_FLOAT, GL.GL_FALSE, 24, ctypes.c_void_p(0))
GL.glEnableVertexAttribArray(position)
color = GL.glGetAttribLocation(shaderProgram, "color")
GL.glVertexAttribPointer(color, 3, GL.GL_FLOAT, GL.GL_FALSE, 24, ctypes.c_void_p(12))
GL.glEnableVertexAttribArray(color)
event = sdl2.SDL_Event()
running = True
GL.glClearColor(0, 0, 0, 1)
while running:
while sdl2.SDL_PollEvent(ctypes.byref(event)) != 0:
if event.type == sdl2.SDL_QUIT:
running = False
try:
GL.glClear(GL.GL_COLOR_BUFFER_BIT)
GL.glDrawElements(GL.GL_TRIANGLES, 6, GL.GL_UNSIGNED_INT, None)
finally:
GL.glUseProgram(0)
sdl2.SDL_GL_SwapWindow(window)
sdl2.SDL_Delay(10)
sdl2.SDL_GL_DeleteContext(context)
sdl2.SDL_DestroyWindow(window)
sdl2.SDL_Quit()
return 0
def init():
global program
global program2
global VAO_mesh
global VBO_mesh
global VAO_planes
global VBO_planes
global VAO_segments
global VBO_segments
global num_vertices_mesh
global num_vertices_planes
global num_vertices_segments
# Build programs (shaders).
program = ut.createShaderProgram(mesh_vs, mesh_fs)
program2 = ut.createShaderProgram(segment_vs, segment_fs)
# Load mesh.
mesh = stlmesh.stlmesh(stl_file)
mesh_min = mesh.min_coordinates()[2]
mesh_max = mesh.max_coordinates()[2]
# Compute slices.
P = None
srt = False
mesh_slicer = slicer.slicer(mesh.triangles,P,delta,srt)
mesh_slicer.incremental_slicing()
# Create mesh data for GPU.
data,num_vertices_mesh = mesh.OpenGLData(view_min, view_max)
# Copy mesh data to GPU
VAO_mesh = gl.glGenVertexArrays(1)
VBO_mesh = gl.glGenBuffers(1)
gl.glBindVertexArray(VAO_mesh)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, VBO_mesh)
gl.glBufferData(gl.GL_ARRAY_BUFFER, data.nbytes, data, gl.GL_STATIC_DRAW)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 6*data.itemsize, None)
gl.glEnableVertexAttribArray(0)
gl.glVertexAttribPointer(1, 3, gl.GL_FLOAT, gl.GL_FALSE, 6*data.itemsize, c_void_p(3*data.itemsize))
gl.glEnableVertexAttribArray(1)
# Unbind
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
gl.glBindVertexArray(0)
# Create data for planes.
data,num_vertices_planes = mesh_slicer.OpenGLPlanesData(mesh_min,mesh_max,view_min,view_max)
# Copy planes data to GPU
VAO_planes = gl.glGenVertexArrays(1)
VBO_planes = gl.glGenBuffers(1)
gl.glBindVertexArray(VAO_planes)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, VBO_planes)
gl.glBufferData(gl.GL_ARRAY_BUFFER, data.nbytes, data, gl.GL_STATIC_DRAW)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 6*data.itemsize, None)
gl.glEnableVertexAttribArray(0)
gl.glVertexAttribPointer(1, 3, gl.GL_FLOAT, gl.GL_FALSE, 6*data.itemsize, c_void_p(3*data.itemsize))
gl.glEnableVertexAttribArray(1)
# Unbind
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
gl.glBindVertexArray(0)
# Create slices data for GPU.
mesh_max = mesh.max_coordinates()
mesh_min = mesh.min_coordinates()
data,num_vertices_segments = mesh_slicer.OpenGLPolygonsData(mesh_min,mesh_max,view_min,view_max)
# Copy segments data to GPU
VAO_segments = gl.glGenVertexArrays(1)
VBO_segments = gl.glGenBuffers(1)
gl.glBindVertexArray(VAO_segments)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, VBO_segments)
gl.glBufferData(gl.GL_ARRAY_BUFFER, data.nbytes, data, gl.GL_STATIC_DRAW)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 6*data.itemsize, None)
gl.glEnableVertexAttribArray(0)
gl.glVertexAttribPointer(1, 3, gl.GL_FLOAT, gl.GL_FALSE, 6*data.itemsize, c_void_p(3*data.itemsize))
gl.glEnableVertexAttribArray(1)
# Unbind
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
gl.glBindVertexArray(0)
# Set depth
gl.glEnable(gl.GL_DEPTH_TEST)
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
def _resize(self):
""" """
log("GPU: Resizing buffer(%d bytes)" % self._nbytes)
gl.glBufferData(self._target, self._nbytes, None, self._usage)
self._need_resize = False
def main():
global delta_time, last_frame
glfw.init()
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
window = glfw.create_window(SRC_WIDTH, SRC_HEIGHT, "learnOpenGL", None, None)
if not window:
glfw.terminate()
raise ValueError("Failed to create window")
glfw.make_context_current(window)
glfw.set_framebuffer_size_callback(window, framebuffer_size_callback)
glfw.set_cursor_pos_callback(window, mouse_callback)
glfw.set_scroll_callback(window, scroll_callback)
glfw.set_input_mode(window, glfw.CURSOR, glfw.CURSOR_DISABLED)
gl.glEnable(gl.GL_DEPTH_TEST)
lamp_shader = Shader(CURDIR / "shaders/1.lamp.vs", CURDIR / "shaders/1.lamp.fs")
lighting_shader = Shader(CURDIR / "shaders/5.4.light_casters.vs", CURDIR / "shaders/5.4.light_casters.fs")
vertices = [
# positions normals texture coords
-0.5, -0.5, -0.5, 0.0, 0.0, -1.0, 0.0, 0.0,
0.5, -0.5, -0.5, 0.0, 0.0, -1.0, 1.0, 0.0,
0.5, 0.5, -0.5, 0.0, 0.0, -1.0, 1.0, 1.0,
0.5, 0.5, -0.5, 0.0, 0.0, -1.0, 1.0, 1.0,
-0.5, 0.5, -0.5, 0.0, 0.0, -1.0, 0.0, 1.0,
-0.5, -0.5, -0.5, 0.0, 0.0, -1.0, 0.0, 0.0,
-0.5, -0.5, 0.5, 0.0, 0.0, 1.0, 0.0, 0.0,
0.5, -0.5, 0.5, 0.0, 0.0, 1.0, 1.0, 0.0,
0.5, 0.5, 0.5, 0.0, 0.0, 1.0, 1.0, 1.0,
0.5, 0.5, 0.5, 0.0, 0.0, 1.0, 1.0, 1.0,
-0.5, 0.5, 0.5, 0.0, 0.0, 1.0, 0.0, 1.0,
-0.5, -0.5, 0.5, 0.0, 0.0, 1.0, 0.0, 0.0,
-0.5, 0.5, 0.5, -1.0, 0.0, 0.0, 1.0, 0.0,
-0.5, 0.5, -0.5, -1.0, 0.0, 0.0, 1.0, 1.0,
-0.5, -0.5, -0.5, -1.0, 0.0, 0.0, 0.0, 1.0,
-0.5, -0.5, -0.5, -1.0, 0.0, 0.0, 0.0, 1.0,
-0.5, -0.5, 0.5, -1.0, 0.0, 0.0, 0.0, 0.0,
-0.5, 0.5, 0.5, -1.0, 0.0, 0.0, 1.0, 0.0,
0.5, 0.5, 0.5, 1.0, 0.0, 0.0, 1.0, 0.0,
0.5, 0.5, -0.5, 1.0, 0.0, 0.0, 1.0, 1.0,
0.5, -0.5, -0.5, 1.0, 0.0, 0.0, 0.0, 1.0,
0.5, -0.5, -0.5, 1.0, 0.0, 0.0, 0.0, 1.0,
0.5, -0.5, 0.5, 1.0, 0.0, 0.0, 0.0, 0.0,
0.5, 0.5, 0.5, 1.0, 0.0, 0.0, 1.0, 0.0,
-0.5, -0.5, -0.5, 0.0, -1.0, 0.0, 0.0, 1.0,
0.5, -0.5, -0.5, 0.0, -1.0, 0.0, 1.0, 1.0,
0.5, -0.5, 0.5, 0.0, -1.0, 0.0, 1.0, 0.0,
0.5, -0.5, 0.5, 0.0, -1.0, 0.0, 1.0, 0.0,
-0.5, -0.5, 0.5, 0.0, -1.0, 0.0, 0.0, 0.0,
-0.5, -0.5, -0.5, 0.0, -1.0, 0.0, 0.0, 1.0,
-0.5, 0.5, -0.5, 0.0, 1.0, 0.0, 0.0, 1.0,
0.5, 0.5, -0.5, 0.0, 1.0, 0.0, 1.0, 1.0,
0.5, 0.5, 0.5, 0.0, 1.0, 0.0, 1.0, 0.0,
0.5, 0.5, 0.5, 0.0, 1.0, 0.0, 1.0, 0.0,
-0.5, 0.5, 0.5, 0.0, 1.0, 0.0, 0.0, 0.0,
-0.5, 0.5, -0.5, 0.0, 1.0, 0.0, 0.0, 1.0
]
vertices = (c_float * len(vertices))(*vertices)
cube_positions = [
( 0.0, 0.0, 0.0),
( 2.0, 5.0, -15.0),
(-1.5, -2.2, -2.5),
(-3.8, -2.0, -12.3),
( 2.4, -0.4, -3.5),
(-1.7, 3.0, -7.5),
( 1.3, -2.0, -2.5),
( 1.5, 2.0, -2.5),
( 1.5, 0.2, -1.5),
(-1.3, 1.0, -1.5)
]
cube_vao = gl.glGenVertexArrays(1)
vbo = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
gl.glBufferData(gl.GL_ARRAY_BUFFER, sizeof(vertices), vertices, gl.GL_STATIC_DRAW)
gl.glBindVertexArray(cube_vao)
# -- position attribute
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 8 * sizeof(c_float), c_void_p(0))
gl.glEnableVertexAttribArray(0)
# -- normal attribute
gl.glVertexAttribPointer(1, 3, gl.GL_FLOAT, gl.GL_FALSE, 8 * sizeof(c_float), c_void_p(3 * sizeof(c_float)))
gl.glEnableVertexAttribArray(1)
# -- texture coordinate
gl.glVertexAttribPointer(2, 2, gl.GL_FLOAT, gl.GL_FALSE, 8 * sizeof(c_float), c_void_p(6 * sizeof(c_float)))
gl.glEnableVertexAttribArray(2)
# -- second configure light vao (vbo is the same)
light_vao = gl.glGenVertexArrays(1)
gl.glBindVertexArray(light_vao)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 8 * sizeof(c_float), c_void_p(0))
gl.glEnableVertexAttribArray(0)
# -- load texture
diffuse_map = load_texture("container2.png")
specular_map = load_texture("container2_specular.png")
# -- shader configuration
lighting_shader.use()
lighting_shader.set_int("material.diffuse", 0)
lighting_shader.set_int("material.specular", 1)
while not glfw.window_should_close(window):
# -- time logic
current_frame = glfw.get_time()
delta_time = current_frame - last_frame
last_frame = current_frame
# -- input
process_input(window)
# -- render
gl.glClearColor(0.1, 0.1, 0.1, 1.0)
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
lighting_shader.use()
lighting_shader.set_vec3("light.position", camera.position)
lighting_shader.set_vec3("light.direction", camera.front)
lighting_shader.set_float("light.cutOff", math.cos(math.radians(12.5)))
lighting_shader.set_float("light.outerCutOff", math.cos(math.radians(17.5)))
lighting_shader.set_vec3("viewPos", camera.position)
# -- light properties
lighting_shader.set_vec3("light.ambient", Vector3([0.1, 0.1, 0.1]))
# we configure the diffuse intensity slightly higher; the right lighting conditions differ with each lighting method and environment.
# each environment and lighting type requires some tweaking to get the best out of your environment.
lighting_shader.set_vec3("light.diffuse", Vector3([0.8, 0.8, 0.8]))
lighting_shader.set_vec3("light.specular", Vector3([1.0, 1.0, 1.0]))
lighting_shader.set_float("light.constant", 1.0)
lighting_shader.set_float("light.linear", 0.09)
lighting_shader.set_float("light.quadratic", 0.032)
# -- material properties
lighting_shader.set_float("material.shininess", 32.0)
# -- view.projection transformations
projection = Matrix44.perspective_projection(camera.zoom, SRC_WIDTH/SRC_HEIGHT, 0.1, 100.0)
view = camera.get_view_matrix()
lighting_shader.set_mat4("projection", projection)
lighting_shader.set_mat4("view", view)
# -- world transformation
model = Matrix44.identity()
lighting_shader.set_mat4("model", model)
# -- bind diffuse map
gl.glActiveTexture(gl.GL_TEXTURE0)
gl.glBindTexture(gl.GL_TEXTURE_2D, diffuse_map)
# -- bind specular map
gl.glActiveTexture(gl.GL_TEXTURE1)
gl.glBindTexture(gl.GL_TEXTURE_2D, specular_map)
# -- render continers
gl.glBindVertexArray(cube_vao)
for idx, position in enumerate(cube_positions):
angle = 20.0 * idx
rotation = matrix44.create_from_axis_rotation([1.0, 0.3, 0.5], math.radians(angle))
translation = Matrix44.from_translation(position)
model = translation * rotation
lighting_shader.set_mat4('model', model)
gl.glDrawArrays(gl.GL_TRIANGLES, 0, 36)
# # -- draw lamp object
# lamp_shader.use()
# lamp_shader.set_mat4("projection", projection)
# lamp_shader.set_mat4("view", view)
# model = Matrix44.identity()
# model *= Matrix44.from_translation(light_pos)
# model *= Matrix44.from_scale(Vector3([.2, .2, .2]))
# lamp_shader.set_mat4("model", model)
# gl.glBindVertexArray(light_vao)
# gl.glDrawArrays(gl.GL_TRIANGLES, 0, 36)
glfw.swap_buffers(window)
glfw.poll_events()
gl.glDeleteVertexArrays(1, id(cube_vao))
gl.glDeleteVertexArrays(1, id(light_vao))
gl.glDeleteBuffers(1, id(vbo))
glfw.terminate()
