def __init__(self,
ctx: moderngl.Context,
size: Size,
mesh: Mesh,
projection: np.array,
components=4):
self.size = size
self.projection = projection
self.prog = ctx.program(
vertex_shader=Path('shaders/simple.vert').read_text(),
fragment_shader=Path('shaders/simple.frag').read_text())
#from ModernGL.ext.obj import Obj
#mesh = Obj.open('meshes/cube.obj')
#vertex_data = mesh.pack('vx vy vz nx ny nz')
#self.vao = from_mesh(ctx, self.prog, mesh)
vertex_data = pack(mesh).astype('f4').tobytes()
self.vbo = ctx.buffer(vertex_data)
self.vao = ctx.simple_vertex_array(self.prog, self.vbo, 'in_vert',
'in_normal')
self.fbo = create_fbo(ctx, self.size, components)
self.fbo.use()
self.ctx = ctx
def load_program(name: str, ctx: mgl.Context) -> mgl.Program:
"""Create a program based on a shader name prefix.
This function automatically load all shader type based on file existence, looking for
_vertex, _fragment and _geometry suffices in the ``shaders`` directory.
The same program instance is returned for identical combination of ``name``/``_ctx``.
Args:
name: shader file name prefix
ctx: context
Returns:
the loaded program
"""
def _load_shader(path: str) -> Optional[str]:
try:
with open(path) as fp:
return fp.read()
except IOError:
return None
full_path = os.path.dirname(
__file__) + os.path.sep + "shaders" + os.path.sep + name
return ctx.program(
vertex_shader=_load_shader(full_path + "_vertex.glsl"),
fragment_shader=_load_shader(full_path + "_fragment.glsl"),
geometry_shader=_load_shader(full_path + "_geometry.glsl"),
)
def _compile(self, ctx: moderngl.Context):
if self.program is None:
self.program = ctx.program(vertex_shader=self.vertex_shader,
fragment_shader=self.fragment_shader,
geometry_shader=self.geometry_shader)
for n in self.program:
v = self.program[n]
if isinstance(v, moderngl.Attribute):
self.inputs[n] = v
if isinstance(v, moderngl.Uniform):
self.uniforms[n] = v
def __init__(
self, ctx: mgl.Context, lc: vp.LineCollection, color: ColorType = (0, 0, 0, 0.25)
):
super().__init__(ctx)
vertex = """
#version 330
uniform mat4 projection;
in vec2 position;
void main() {
gl_PointSize = 5.0;
gl_Position = projection * vec4(position, 0.0, 1.0);
}
"""
fragment = """
#version 330
uniform vec4 color;
out vec4 out_color;
void main() {
out_color = color;
}
"""
self._prog = ctx.program(vertex_shader=vertex, fragment_shader=fragment)
self._color = color
vertices, indices = self._build_buffers(lc)
vbo = ctx.buffer(vertices.astype("f4").tobytes())
ibo = ctx.buffer(indices.astype("i4").tobytes())
self._vao = ctx.simple_vertex_array(self._prog, vbo, "position", index_buffer=ibo)
def __init__(self, context: mgl.Context):
self.render = context.program(vertex_shader=particle_vert, fragment_shader=particle_frag)
#trans_prog = res.read_text(shader_src, 'particle_transform.vert')
self.transform = context.program(vertex_shader=particle_transform_vert,
varyings=['out_pos_alpha',
'out_prev_pos_alpha'])
def VertexColorShader(context: mgl.Context):
global vertex_color_shader
if vertex_color_shader is None:
vertex_color_shader = context.program(vertex_shader=vertex_color_vert, fragment_shader=vertex_color_frag)
return vertex_color_shader
def TextShader(context: mgl.Context):
global text_shader
if text_shader is None:
text_shader = context.program(vertex_shader=text_vert, fragment_shader=text_frag)
return text_shader
def StippleShader(context: mgl.Context):
global stipple_shader
if stipple_shader is None:
stipple_shader = context.program(vertex_shader=stipple_vert, fragment_shader=stipple_frag)
return stipple_shader
def ImageShader(context: mgl.Context):
global image_shader
if image_shader is None:
image_shader = context.program(vertex_shader=image_vert, fragment_shader=image_frag)
return image_shader
def FlatShader(context: mgl.Context):
global flat_shader
if flat_shader is None:
flat_shader = context.program(vertex_shader=flat_vert, fragment_shader=flat_frag)
return flat_shader