def __initiate_textures(self, number_of_textures):
"""Generate textures."""
if number_of_textures == 1:
self.__textures_ids = [glGenTextures(1)]
elif number_of_textures > 1:
self.__textures_ids = glGenTextures(number_of_textures)
self.__textures = []
def gl_init_textures(self):
assert self.offscreen_fbo is None
assert self.shaders is None
self.textures = glGenTextures(N_TEXTURES)
self.offscreen_fbo = glGenFramebuffers(1)
self.tmp_fbo = glGenFramebuffers(1)
log("%s.gl_init_textures() textures: %s, offscreen fbo: %s, tmp fbo: %s", self, self.textures, self.offscreen_fbo, self.tmp_fbo)
def makeGLTexture(image_data: np.ndarray, w: int, h: int, repeat=False) -> int:
"""Loading pygame.Surface as OpenGL texture
:return New Texture key"""
# getting data from pygame.Surface
# bind new texture
key = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, key)
# SETTING UP
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_NEAREST) # настройка сжатия
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
GL_NEAREST) # настройка растяжения
if repeat:
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT)
glTexImage2D(GL_TEXTURE_2D, GL_ZERO, GL_RGBA, w, h, GL_ZERO, GL_RGBA,
GL_UNSIGNED_BYTE, image_data)
#
# unbind new texture
glBindTexture(GL_TEXTURE_2D, 0)
return key
def load_stack(self, stack):
print('stack shape', stack.shape)
s = np.array(stack, dtype=np.uint8, order='F')
print(s.shape)
w, h, d = s.shape
print('shape', s.shape)
stack_texture = glGenTextures(1)
print(stack_texture)
glActiveTexture(GL_TEXTURE0)
glBindTexture(GL_TEXTURE_3D, stack_texture)
glTexParameter(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameter(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
# glTexParameter(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
# glTexParameter(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
# glTexParameter(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE)
glTexImage3D(GL_TEXTURE_3D, 0, GL_R8, d, h, w, 0, GL_RED,
GL_UNSIGNED_BYTE, s)
print("made 3D texture")
return stack_texture, s.shape
def load_texture(self, img: Image) -> None:
img_data = np.fromstring(img.tobytes(), np.uint8)
width, height = img.size
self._texture = glGenTextures(1)
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
glBindTexture(GL_TEXTURE_2D, self._texture)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_LINEAR_MIPMAP_LINEAR)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
mode = GL_RGBA
if img.mode == "RGB":
mode = GL_RGB
glTexImage2D(
GL_TEXTURE_2D,
0,
mode,
width,
height,
0,
mode,
GL_UNSIGNED_BYTE,
img_data,
)
glGenerateMipmap(GL_TEXTURE_2D)
def __init__(self, textureData, pos, size,
histogramScale, layer, shouldDelayAllocation=False):
## Array of pixel brightnesses
self.textureData = textureData
## XYZ position tuple, in microns. NB the Z portion is ignored
# for rendering purposes and is mostly just kept around so we know
# the Z altitude at which the tile was collected, for later use.
self.pos = pos
## width/height tuple, in microns
self.size = size
## Box describing space we occupy: (upper left corner, lower right corner)
self.box = (self.pos[:2], (self.pos[0] + self.size[0], self.pos[1] + self.size[1]))
## Grouping this tile belongs to, used to toggle display
self.layer = layer
## OpenGL texture ID
self.texture = glGenTextures(1)
self.scaleHistogram(histogramScale[0], histogramScale[1])
# Indicate refresh required after scaling histogram.
self.shouldRefresh = False
if not shouldDelayAllocation:
self.bindTexture()
self.refresh()
def _createTexture(self):
surface = self._textureImage
width = surface.get_width()
height = surface.get_height()
raw = pygame.image.tostring(surface, "RGBA", 0)
texture = glGenTextures(1)
# glGenTextures fails by returning 0, particularly if there's no GL
# context yet.
assert texture != 0
glBindTexture(GL_TEXTURE_2D, texture)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexImage2D(
GL_TEXTURE_2D, 0,
GL_RGBA, width, height, 0,
GL_RGBA,
GL_UNSIGNED_BYTE,
raw)
return texture
def init_back_texture(self, width, height):
if self.fbo is None:
self.fbo = glGenFramebuffers(1)
glActiveTexture(GL_TEXTURE0 + 1)
if self.bfTex is not None:
glDeleteTextures([self.bfTex])
self.bfTex = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, self.bfTex)
glTexParameter(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameter(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
w = int(width)
h = int(height)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, w, h, 0,
GL_RGBA, GL_FLOAT, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D,
self.bfTex, 0)
glBindFramebuffer(GL_FRAMEBUFFER, 0)
glBindTexture(GL_TEXTURE_2D, 0)
def gl_init_textures(self):
assert self.offscreen_fbo is None
assert self.shaders is None
self.textures = glGenTextures(6)
self.offscreen_fbo = self._gen_fbo()
self.tmp_fbo = self._gen_fbo()
log("%s.gl_init_textures() textures: %s, offscreen fbo: %s, tmp fbo: %s", self, self.textures, self.offscreen_fbo, self.tmp_fbo)
def parse_mtl(filename):
contents = {}
mtl = None
for line in open(filename, "r"):
if line.startswith('#'): continue
values = line.split()
if not values: continue
if values[0] == 'newmtl':
mtl = contents[values[1]] = {}
elif mtl is None:
raise ValueError("mtl file doesn't start with newmtl stmt")
elif values[0] == 'map_Kd':
# load the texture referred to by this declaration
mtl[values[0]] = values[1]
surf_file = mtl['map_Kd']
if surf_file.endswith('.tga'):
TGA_Header
surf = pygame.image.load()
image = pygame.image.tostring(surf, 'RGBA', 1)
ix, iy = surf.get_rect().size
texid = mtl['texture_Kd'] = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, texid)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
GL_LINEAR)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, ix, iy, 0, GL_RGBA,
GL_UNSIGNED_BYTE, image)
else:
mtl[values[0]] = list(map(float, values[1:]))
return contents
def _setup_texture(self, context_id: str):
"""Set up the texture for a given context"""
gl_texture = self._gl_textures[context_id] = glGenTextures(
1
) # Create the texture location
glBindTexture(GL_TEXTURE_2D, gl_texture)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
glBindTexture(GL_TEXTURE_2D, gl_texture)
glTexImage2D(
GL_TEXTURE_2D,
0,
GL_RGBA,
self._image_width,
self._image_height,
0,
GL_RGBA,
GL_UNSIGNED_BYTE,
self._image,
)
glBindTexture(GL_TEXTURE_2D, 0)
log.info("Finished setting up texture atlas in OpenGL")
def gl_init_textures(self):
assert self.offscreen_fbo is None
assert self.shaders is None
self.textures = glGenTextures(5)
self.offscreen_fbo = glGenFramebuffers(1)
debug("%s.gl_init_textures() textures: %s, offscreen fbo: %s", self,
self.textures, self.offscreen_fbo)
def load_texture(path):
import pygame
#Cargo la imagen a memoria. pygame se hace cargo de decodificarla correctamente
surf = pygame.image.load(path)
surf = pygame.transform.flip(surf, False, True)
#Obtengo la matriz de colores de la imagen en forma de un array binario
#Le indico el formato en que quiero almacenar los datos (RGBA) y que invierta la matriz, para poder usarla correctamente con OpenGL
image = pygame.image.tostring(surf, 'RGBA', 1)
#Obentego las dimensiones de la imagen
ix, iy = surf.get_rect().size
#Creo una textura vacia en memoria de video, y me quedo con el identificador (texid) para poder referenciarla
texid = glGenTextures(1)
#Activo esta nueva textura para poder cargarle informacion
glBindTexture(GL_TEXTURE_2D, texid)
#Seteo los tipos de filtro a usar para agrandar y achivar la textura
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
#Cargo la matriz de colores dentro de la textura
#Los parametros que le paso son:
# - Tipo de textura, en este caso GL_TEXTURE_2D
# - Nivel de mipmap, en este caso 0 porque no estoy usando mas niveles
# - Formato en que quiero almacenar los datos en memoria de video, GL_RGB en este caso, porque no necesito canal Alfa
# - Ancho de la textura
# - Alto de la textura
# - Grosor en pixels del borde, en este caso 0 porque no quiero agregar borde a al imagen
# - Formato de los datos de la imagen, en este caso GL_RGBA que es como lo leimos con pygame.image
# - Formato de los canales de color, GL_UNSIGNED_BYTE quiere decir que son 8bits para cada canal
# - La imagen, en este caso la matriz de colores que creamos con pygame.image.tostring
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, ix, iy, 0, GL_RGBA, GL_UNSIGNED_BYTE, image)
#Una vez que tengo todo cargado, desactivo la textura para evitar que se dibuje por error mas adelante
#Cada vez que quiera usarla, puedo hacer glBindTexture con el identificador (texid) que me guarde al crearla
glBindTexture(GL_TEXTURE_2D, 0)
#devuelvo el identificador de la textura para que pueda ser usada mas adelante
return texid
def LoadTexture(path):
# запросим у OpenGL свободный индекс текстуры
texture = glGenTextures(1)
# сделаем текстуру активной
glBindTexture(GL_TEXTURE_2D, texture)
# загружаем изображение-текстуру
image = Image.open(path)
image = image.transpose(Image.FLIP_TOP_BOTTOM)
img_data = image.convert("RGBA").tobytes()
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.width, image.height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, img_data)
glGenerateMipmap(GL_TEXTURE_2D)
# установим параметры фильтрации текстуры - линейная фильтрация
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_LINEAR_MIPMAP_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
# установим параметры "оборачиваниея" текстуры - отсутствие оборачивания
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT) #GL_REPEAT
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT) #GL_REPEAT
# возвращаем текстуру
return texture
def do_configure_event(self, event):
ClientWindow.do_configure_event(self, event)
drawable = self.glarea.get_gl_drawable()
context = self.glarea.get_gl_context()
self.yuv420_shader = None
# Re-create textures
self.current_mode = GLClientWindow.MODE_UNINITIALIZED
if not drawable.gl_begin(context):
raise Exception("** Cannot create OpenGL rendering context!")
w, h = self.get_size()
log("Configure widget size: %d x %d" % (w, h))
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
glEnableClientState(GL_VERTEX_ARRAY)
glEnableClientState(GL_TEXTURE_COORD_ARRAY)
glDisable(GL_FRAGMENT_PROGRAM_ARB)
if self.textures is None:
self.textures = glGenTextures(3)
drawable.gl_end()
def do_configure_event(self, event):
ClientWindow.do_configure_event(self, event)
drawable = self.glarea.get_gl_drawable()
context = self.glarea.get_gl_context()
self.yuv420_shader = None
# Re-create textures
self.current_mode = GLClientWindow.MODE_UNINITIALIZED
if not drawable.gl_begin(context):
raise Exception("** Cannot create OpenGL rendering context!")
w, h = self.get_size()
log("Configure widget size: %d x %d" % (w, h))
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
glEnableClientState(GL_VERTEX_ARRAY)
glEnableClientState(GL_TEXTURE_COORD_ARRAY)
glDisable(GL_FRAGMENT_PROGRAM_ARB)
if self.textures is None:
self.textures = glGenTextures(3)
drawable.gl_end()
def __init__(self, parent: wx.Window):
display_attributes = wx.glcanvas.GLAttributes()
display_attributes.PlatformDefaults().MinRGBA(
8, 8, 8, 8).DoubleBuffer().Depth(24).EndList()
super().__init__(
parent,
display_attributes,
size=parent.GetClientSize(),
style=wx.WANTS_CHARS,
)
if sys.platform == "linux":
# setup the OpenGL context. This apparently fixes #84
self._context = glcanvas.GLContext(self)
else:
context_attributes = wx.glcanvas.GLContextAttrs()
context_attributes.CoreProfile().OGLVersion(
3, 3).Robust().ResetIsolation().EndList()
self._context = glcanvas.GLContext(
self, ctxAttrs=context_attributes) # setup the OpenGL context
self.SetCurrent(self._context)
self._context_identifier = str(
uuid.uuid4()) # create a UUID for the context. Used to get shaders
self._gl_texture_atlas = glGenTextures(
1) # Create the atlas texture location
self._setup_opengl() # set some OpenGL states
def __init__(self, face: freetype.Face, char: str) -> None:
if face.load_char(char, freetype.FT_LOAD_RENDER):
raise RuntimeError('failed to load char \'%s\'' % char)
glyph = face.glyph
bitmap = glyph.bitmap
assert bitmap.pixel_mode == freetype.FT_PIXEL_MODE_GRAY, \
"We haven't implemented support for other pixel modes"
glPushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT)
glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE)
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0)
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
self._texture_id = glGenTextures(1)
self._width = bitmap.width
self._height = bitmap.rows
self._descender = glyph.bitmap_top - self._height
self._bearing_x = glyph.bitmap_left
self._advance = numpy.array(
[face.glyph.advance.x / 64.0, face.glyph.advance.y / 64.0])
glBindTexture(GL_TEXTURE_2D, self._texture_id)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
data = numpy.array(bitmap.buffer,
numpy.ubyte).reshape(self._height, self._width)
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, self._width, self._height, 0,
GL_ALPHA, GL_UNSIGNED_BYTE, numpy.flipud(data))
glPopClientAttrib()
def _loadTexture(self):
"""
Load texture data from current image object
"""
ix, iy, image = self.image_obj.getTextureData()
# allocate texture object if never yet done [bruce 060207 revised all related code, to fix bug 1059]
if self.tex_name is None:
self.tex_name = glGenTextures(1)
# note: by experiment (iMac G5 Panther), this returns a single number (1L, 2L, ...), not a list or tuple,
# but for an argument >1 it returns a list of longs. We depend on this behavior here. [bruce 060207]
# initialize texture data
glBindTexture(GL_TEXTURE_2D, self.tex_name) # 2d texture (x and y size)
glPixelStorei(GL_UNPACK_ALIGNMENT,1)
self.have_mipmaps = False
if debug_pref("smoother tiny textures", Choice_boolean_False, prefs_key = True):
#bruce 060212 new feature; only takes effect when image is reloaded for some reason (like "load image" button)
gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGBA, ix, iy, GL_RGBA, GL_UNSIGNED_BYTE, image)
self.have_mipmaps = True
else:
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, ix, iy, 0, GL_RGBA, GL_UNSIGNED_BYTE, image)
# 0 is mipmap level, GL_RGBA is internal format, ix, iy is size, 0 is borderwidth,
# and (GL_RGBA, GL_UNSIGNED_BYTE, image) describe the external image data. [bruce 060212 comment]
## self._initTextureEnv() #bruce 060207 do this in draw method, not here
self.assy.o.gl_update()
return
def get_gl_info_string(glpane): # grantham 20051129
"""Return a string containing some useful information about the OpenGL
implementation.
Use the GL context from the given QGLWidget glpane (by calling
glpane.makeCurrent()).
"""
glpane.makeCurrent() #bruce 070308 added glpane arg and makeCurrent call
gl_info_string = ''
gl_info_string += 'GL_VENDOR : "%s"\n' % glGetString(GL_VENDOR)
gl_info_string += 'GL_VERSION : "%s"\n' % glGetString(GL_VERSION)
gl_info_string += 'GL_RENDERER : "%s"\n' % glGetString(GL_RENDERER)
gl_info_string += 'GL_EXTENSIONS : "%s"\n' % glGetString(GL_EXTENSIONS)
from utilities.debug_prefs import debug_pref, Choice_boolean_False
if debug_pref("get_gl_info_string call glAreTexturesResident?",
Choice_boolean_False):
# Give a practical indication of how much video memory is available.
# Should also do this with VBOs.
# I'm pretty sure this code is right, but PyOpenGL seg faults in
# glAreTexturesResident, so it's disabled until I can figure that
# out. [grantham] [bruce 070308 added the debug_pref]
all_tex_in = True
tex_bytes = '\0' * (512 * 512 * 4)
tex_names = []
tex_count = 0
tex_names = glGenTextures(1024)
glEnable(GL_TEXTURE_2D)
while all_tex_in:
glBindTexture(GL_TEXTURE_2D, tex_names[tex_count])
gluBuild2DMipmaps(GL_TEXTURE_2D, 4, 512, 512, GL_RGBA,
GL_UNSIGNED_BYTE, tex_bytes)
tex_count += 1
glTexCoord2f(0.0, 0.0)
glBegin(GL_QUADS)
glVertex2f(0.0, 0.0)
glVertex2f(1.0, 0.0)
glVertex2f(1.0, 1.0)
glVertex2f(0.0, 1.0)
glEnd()
glFinish()
residences = glAreTexturesResident(tex_names[:tex_count])
all_tex_in = reduce(lambda a, b: a and b, residences)
# bruce 070308 sees this exception from this line:
# TypeError: reduce() arg 2 must support iteration
glDisable(GL_TEXTURE_2D)
glDeleteTextures(tex_names)
gl_info_string += "Could create %d 512x512 RGBA resident textures\n" \
% tex_count
return gl_info_string
def get_gl_info_string(glpane): # grantham 20051129
"""Return a string containing some useful information about the OpenGL
implementation.
Use the GL context from the given QGLWidget glpane (by calling
glpane.makeCurrent()).
"""
glpane.makeCurrent() #bruce 070308 added glpane arg and makeCurrent call
gl_info_string = ''
gl_info_string += 'GL_VENDOR : "%s"\n' % glGetString(GL_VENDOR)
gl_info_string += 'GL_VERSION : "%s"\n' % glGetString(GL_VERSION)
gl_info_string += 'GL_RENDERER : "%s"\n' % glGetString(GL_RENDERER)
gl_info_string += 'GL_EXTENSIONS : "%s"\n' % glGetString(GL_EXTENSIONS)
from utilities.debug_prefs import debug_pref, Choice_boolean_False
if debug_pref("get_gl_info_string call glAreTexturesResident?",
Choice_boolean_False):
# Give a practical indication of how much video memory is available.
# Should also do this with VBOs.
# I'm pretty sure this code is right, but PyOpenGL seg faults in
# glAreTexturesResident, so it's disabled until I can figure that
# out. [grantham] [bruce 070308 added the debug_pref]
all_tex_in = True
tex_bytes = '\0' * (512 * 512 * 4)
tex_names = []
tex_count = 0
tex_names = glGenTextures(1024)
glEnable(GL_TEXTURE_2D)
while all_tex_in:
glBindTexture(GL_TEXTURE_2D, tex_names[tex_count])
gluBuild2DMipmaps(GL_TEXTURE_2D, 4, 512, 512, GL_RGBA,
GL_UNSIGNED_BYTE, tex_bytes)
tex_count += 1
glTexCoord2f(0.0, 0.0)
glBegin(GL_QUADS)
glVertex2f(0.0, 0.0)
glVertex2f(1.0, 0.0)
glVertex2f(1.0, 1.0)
glVertex2f(0.0, 1.0)
glEnd()
glFinish()
residences = glAreTexturesResident(tex_names[:tex_count])
all_tex_in = reduce(lambda a,b: a and b, residences)
# bruce 070308 sees this exception from this line:
# TypeError: reduce() arg 2 must support iteration
glDisable(GL_TEXTURE_2D)
glDeleteTextures(tex_names)
gl_info_string += "Could create %d 512x512 RGBA resident textures\n" \
% tex_count
return gl_info_string
def gl_init(self):
drawable = self.gl_begin()
w, h = self.size
debug("GL Pixmap backing size: %d x %d, drawable=%s", w, h, drawable)
if not drawable:
return None
if not self.gl_setup:
# Ask GL to send us all debug messages
if GL_DEBUG_OUTPUT and gl_debug_callback and glInitDebugKHR() == True:
glEnable(GL_DEBUG_OUTPUT)
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS)
glDebugMessageCallback(gl_debug_callback, None)
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, None, GL_TRUE)
# Initialize string_marker GL debugging extension if available
if glInitStringMarkerGREMEDY and glInitStringMarkerGREMEDY() == True:
log.info("Extension GL_GREMEDY_string_marker available. Will output detailed information about each frame.")
else:
# General case - running without debugger, extension not available
glStringMarkerGREMEDY = None
# Initialize frame_terminator GL debugging extension if available
if glInitFrameTerminatorGREMEDY and glInitFrameTerminatorGREMEDY() == True:
glFrameTerminatorGREMEDY = None
self.gl_marker("Initializing GL context for window size %d x %d" % (w, h))
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
#TODO glEnableClientState(GL_VERTEX_ARRAY)
#TODO glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear to white
glClearColor(1.0, 1.0, 1.0, 1.0)
# Default state is good for YUV painting:
# - fragment program enabled
# - render to offscreen FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
if self.textures is None:
self.textures = glGenTextures(5)
debug("textures for wid=%s of size %s : %s", self.wid, self.size, self.textures)
if self.offscreen_fbo is None:
self.offscreen_fbo = glGenFramebuffers(1)
# Define empty FBO texture and set rendering to FBO
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB, w, h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
self.gl_setup = True
return drawable
def __init__(self):
self._texId = glGenTextures(1)
self._width = None
self._height = None
# Bind an ID for this texture
glBindTexture(GL_TEXTURE_2D, self._texId)
# Use bilinear filtering if the texture has to be scaled
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
def set_texture(m):
texture_data = np.array(m.texture_image, dtype='int8')
m.textureID = glGenTextures(1)
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
glBindTexture(GL_TEXTURE_2D, m.textureID)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, texture_data.shape[1],
texture_data.shape[0], 0, GL_BGR, GL_UNSIGNED_BYTE,
texture_data.flatten())
glHint(GL_GENERATE_MIPMAP_HINT,
GL_NICEST) # must be GL_FASTEST, GL_NICEST or GL_DONT_CARE
glGenerateMipmap(GL_TEXTURE_2D)
def gl_init_textures(self):
assert self.offscreen_fbo is None
assert self.shaders is None
self.textures = glGenTextures(5)
if hasattr(glGenFramebuffers, "pyConverters") and len(glGenFramebuffers.pyConverters)==1:
#single argument syntax:
self.offscreen_fbo = glGenFramebuffers(1)
else:
self.offscreen_fbo = c_uint(1)
glGenFramebuffers(1, self.offscreen_fbo)
log("%s.gl_init_textures() textures: %s, offscreen fbo: %s", self, self.textures, self.offscreen_fbo)
def main(path=None):
glutInit(sys.argv)
if sys.platform == 'darwin':
if not path:
path = dialog()
if not path:
sys.exit(0)
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE)
glutInitWindowPosition(0, 0)
glutInitWindowSize(730, 650)
win = glutCreateWindow(b'MIDI Player')
(width, height, img) = read_image(join(dirname(__file__), 'mixer.ppm'))
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
texture = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, texture)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0,
GL_RGB, GL_UNSIGNED_BYTE, img)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glMatrixMode(GL_TEXTURE)
glLoadIdentity()
glScale(1/width, 1/height, 1)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0, 730, 0, 650, 0, 1)
player = Player(win, path, width, height)
glutDisplayFunc(player.display_func)
glutKeyboardFunc(player.keyboard_func)
glutMouseFunc(player.mouse_func)
glutMotionFunc(player.motion_func)
glutIdleFunc(player.process_events)
submenus = []
for instrument in range(128):
if instrument % 8 == 0:
submenus.append([families[instrument // 8],
glutCreateMenu(player.change_instrument)])
glutAddMenuEntry(instruments[instrument].encode('ascii'), instrument)
glutCreateMenu(player.change_instrument)
for family, submenu in submenus:
glutAddSubMenu(family.encode('ascii'), submenu)
glutAttachMenu(GLUT_RIGHT_BUTTON)
glutMainLoop()
def __init__(self, w, h, format=GL_RGBA, internalFormat=None):
self._id = glGenTextures(1);
self._w = w
self._h = h
if internalFormat is None:
internalFormat = format
# crashes _sometimes_ when self._w * self._h > 888*888
glBindTexture(GL_TEXTURE_2D, self._id);
glTexImage2D(GL_TEXTURE_2D, 0, format, self._w, self._h, 0, internalFormat, GL_UNSIGNED_BYTE, None);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glBindTexture(GL_TEXTURE_2D, 0);
def make_texture(
filename=None,
image=None,
interpolate=True,
alpha=False,
integer=False,
maxlod=None):
if image == None:
image = pygame.image.load(filename)
pixels = pygame.image.tostring(image, "RGBA" if alpha else "RGB", True)
texture = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, texture)
glTexParameteri(
GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_NEAREST_MIPMAP_NEAREST if interpolate else GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
if maxlod is not None:
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_LOD, maxlod)
if alpha:
if integer:
targetformat = GL_RGBA8UI
sourceformat = GL_RGBA_INTEGER
else:
targetformat = GL_RGBA8
sourceformat = GL_RGBA
else:
if integer:
targetformat = GL_RGB8UI
sourceformat = GL_RGB_INTEGER
else:
targetformat = GL_RGB8
sourceformat = GL_RGB
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE)
glTexImage2D(
GL_TEXTURE_2D,
0,
targetformat,
image.get_width(),
image.get_height(),
0,
sourceformat,
GL_UNSIGNED_BYTE,
pixels)
print glGetTexLevelParameteriv(
GL_TEXTURE_2D,
0,
GL_TEXTURE_INTERNAL_FORMAT)
return texture
def __init__(self,
vertex,
fragment,
number_of_buffers=0,
number_of_textures=0):
"""Initialize program with shaders."""
self.__program = glCreateProgram()
self.__current_shaders = {}
self.__shaders = {GL_VERTEX_SHADER: [], GL_FRAGMENT_SHADER: []}
self.__depth_map_fbo = None
self.__attributes = []
if not isinstance(vertex, list):
vertex = [vertex]
for v in vertex:
self.__load_shader(get_shader_path(v), GL_VERTEX_SHADER)
if not isinstance(fragment, list):
fragment = [fragment]
for f in fragment:
self.__load_shader(get_shader_path(f), GL_FRAGMENT_SHADER)
self.change_shader(0, 0)
glLinkProgram(self.__program)
assert glGetProgramiv(self.__program, GL_LINK_STATUS) == GL_TRUE
self.__vao_id = glGenVertexArrays(1)
glBindVertexArray(self.__vao_id)
if number_of_buffers == 1:
self.__vbo_id = [glGenBuffers(number_of_buffers)]
elif number_of_buffers > 1:
self.__vbo_id = glGenBuffers(number_of_buffers)
if number_of_textures == 1:
self.__textures_ids = [glGenTextures(1)]
elif number_of_textures > 1:
self.__textures_ids = glGenTextures(number_of_textures)
self.__textures = []
def paint_rgb24(self, img_data, x, y, width, height, rowstride):
# OpenGL begin
if not self.gldrawable.gl_begin(self.glcontext):
log.error("OUCH")
return False
# Upload texture
if not self.texture:
self.texture = glGenTextures(1)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.texture)
glEnable(GL_TEXTURE_RECTANGLE_ARB)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE)
glPixelStorei(GL_UNPACK_ROW_LENGTH, rowstride/3)
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, img_data);
vtxarrays=1
if vtxarrays == 1:
texcoords = [ [ 0, 0 ],
[ 0, height],
[ width, height],
[ width, 0] ]
vtxcoords = texcoords
glVertexPointeri(vtxcoords)
glTexCoordPointeri(texcoords)
glDrawArrays(GL_QUADS, 0, 4);
else:
glBegin(GL_QUADS);
glTexCoord2i(0, 0);
glVertex2i(0, 0);
glTexCoord2i(0, height);
glVertex2i(0, height);
glTexCoord2i(width, height);
glVertex2i(width, height);
glTexCoord2i(width, 0);
glVertex2i(width, 0);
glEnd()
# OpenGL end
#self.gldrawable.swap_buffers()
# self.gldrawable.swap_buffers()
glFinish()
self.gldrawable.gl_end()
def _C_tex_name(self):
"""
define self.tex_name -- allocate a texture name
"""
# code copied from texture_helpers.loadTexture (even though we call it, below, for its other code):
tex_name = glGenTextures(1)
if debug_glGenTextures and seen_before(('debug_glGenTextures', self.filename)):
#070313 using env.seen_before (rename env module (cad/src) -> global_env? for now, basic imports seen_before via py_utils.)
#k I'm not sure if, after certain reloads, I should expect to routinely see this message as textures get reloaded. 070313
print "debug fyi: same filename seen before, in glGenTextures -> %r for %r" % (tex_name, self)
# note: by experiment (iMac G5 Panther), this returns a single number (1L, 2L, ...), not a list or tuple,
# but for an argument >1 it returns a list of longs. We depend on this behavior here. [bruce 060207]
tex_name = int(tex_name) # make sure it worked as expected
assert tex_name != 0
return tex_name
def config_texture(self):
w, h = self.size
pixels = "\0" * w * h * 4
# Create Texture
print("glBindTexture(GL_TEXTURE_RECTANGLE_ARB) size=%s" % str(self.size))
self.texture_id = glGenTextures(1)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.texture_id)
print("done")
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB, w, h, 0,
GL_RGB, GL_UNSIGNED_BYTE, pixels)
glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
def load_texture(cls, file_name):
texture = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, texture)
# Set the texture wrapping parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT)
# Set texture filtering parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
# load image
image = Image.open(file_name)
img_data = numpy.array(list(image.getdata()), numpy.uint8)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, image.width, image.height, 0, GL_RGB, GL_UNSIGNED_BYTE, img_data)
glEnable(GL_TEXTURE_2D)
return texture
def _C_tex_name(self):
"""
define self.tex_name -- allocate a texture name
"""
# code copied from texture_helpers.loadTexture (even though we call it, below, for its other code):
tex_name = glGenTextures(1)
if debug_glGenTextures and seen_before(('debug_glGenTextures', self.filename)):
#070313 using env.seen_before (rename env module (cad/src) -> global_env? for now, basic imports seen_before via py_utils.)
#k I'm not sure if, after certain reloads, I should expect to routinely see this message as textures get reloaded. 070313
print "debug fyi: same filename seen before, in glGenTextures -> %r for %r" % (tex_name, self)
# note: by experiment (iMac G5 Panther), this returns a single number (1L, 2L, ...), not a list or tuple,
# but for an argument >1 it returns a list of longs. We depend on this behavior here. [bruce 060207]
tex_name = int(tex_name) # make sure it worked as expected
assert tex_name != 0
return tex_name
def gl_id(self):
"""Returns the OpenGL texture number corresponding to this texture
in the current context. May trigger allocation of a new texture and
a call to do_setup(). Does not bind the texture, unless a new texture
is allocated, in which case the current texture binding may be changed
as a side effect."""
share_group = current_share_group()
gl_id = self._gl_id.get(share_group)
if gl_id is None:
gl_id = glGenTextures(1)
# print "GLTexture: assigned id %d for %s in share group %s" % (
# gl_id, self, share_group) ###
self._gl_id[share_group] = gl_id
call_when_not_compiling_display_list(lambda: self._setup(gl_id))
return gl_id
def read_texture(filename):
image_data = 0
is_hdr = False
size = ()
if OpenEXR.isOpenExrFile(filename):
is_hdr = True
img = OpenEXR.InputFile(filename)
FLOAT = Imath.PixelType(Imath.PixelType.FLOAT)
(r, g, b) = ( img.channel(chan, FLOAT) for chan in ('R', 'G', 'B'))
dw = img.header()['dataWindow']
size = (dw.max.x - dw.min.x + 1, dw.max.y - dw.min.y + 1)
r_data = np.fromstring(r, dtype=np.float32)
g_data = np.fromstring(g, dtype=np.float32)
b_data = np.fromstring(b, dtype=np.float32)
image_data = np.dstack((r_data, g_data, b_data))
img.close()
else:
try:
image = Image.open(filename)
except IOError as ex:
print('IOError: failed to open texture file %s' % filename)
return -1
print('opened file: size=', image.size, 'format=', image.format)
image_data = np.array(list(image.getdata()), np.uint8)
size = image.size
image.close()
texture_id= glGenTextures(1)
glPixelStorei(GL_UNPACK_ALIGNMENT, 4)
glBindTexture(GL_TEXTURE_2D, texture_id)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT)
if is_hdr:
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB32F, size[0], size[1], 0, GL_RGB, GL_FLOAT, image_data)
else:
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, size[0], size[1], 0, GL_RGB, GL_UNSIGNED_BYTE, image_data)
return texture_id
def texturit(filn: str) -> int:
"""Import a Texture and return the texture buffer handle. Better by RGBA formatted, too."""
wa = glGenTextures(1)
with Image.open(filn) as i:
ix, iy, im = i.size[0], i.size[1], i.tobytes('raw', 'RGBA')
glBindTexture(GL_TEXTURE_2D, wa)
glTexParameter(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
glTexParameter(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
glTexParameter(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexParameter(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, ix, iy, 0, GL_RGBA, GL_UNSIGNED_BYTE, im)
glGenerateMipmap(GL_TEXTURE_2D)
glBindTexture(GL_TEXTURE_2D, 0)
return wa
def create(self, width, height):
self.texture = glGenTextures(1)
glBindTexture(GL_TEXTURE_CUBE_MAP, self.texture)
for i in range(6):
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0,
GL_DEPTH_COMPONENT, width, height, 0,
GL_DEPTH_COMPONENT, GL_FLOAT, None)
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE)
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE)
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R,
GL_CLAMP_TO_EDGE)
def _create_texture(self):
pixels = "\0" * 320 * 240 * 4
w = 320
h = 240
# Create Texture
tex_id = glGenTextures(1)
print("glBindTexture(GL_TEXTURE_RECTANGLE_ARB)")
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, tex_id)
print("done")
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB, w, h, 0,
GL_RGB, GL_UNSIGNED_BYTE, pixels)
glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
self.texture_id = tex_id
def __init__(self, resource_context: ResourceManager, asset_key: str):
self._contents = {}
current_mtl: dict = None
file_data = resource_context.load('assets', asset_key)
for line in file_data:
line = line.decode("utf-8") # Convert bytes line to a string
if line.startswith('#'):
# Ignore comments in the file.
continue
values = line.split()
if not values:
# Ignore empty lines.
continue
attribute_name = values[0]
if attribute_name == 'newmtl':
# Create a new empty material.
current_mtl = self._contents[values[1]] = {}
elif current_mtl is None:
raise ValueError("mtl file must start with newmtl statement")
elif attribute_name == 'map_Kd':
# Diffuse texture map - load the image into memory.
image_name = values[1]
image_file_data = resource_context.load('assets', image_name)
with Image.open(image_file_data) as image:
image_width, image_height = image.size
image = image.convert("RGBA").tobytes("raw", "RGBA")
# Bind the image as a texture that can be used for rendering.
texture_id = glGenTextures(1)
current_mtl['texture_Kd'] = texture_id # pylint: disable=unsupported-assignment-operation
glBindTexture(GL_TEXTURE_2D, texture_id)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
GL_LINEAR)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image_width,
image_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image)
else:
# Store the values for this attribute as a list of float values.
current_mtl[attribute_name] = list(map(float, values[1:])) # pylint: disable=unsupported-assignment-operation
def render_to_texture(self, text):
"""Renders the given string to a texture object.
:param text: Text to render.
:type text: str
:returns: The resulting texture object.
:rtype: :class:`renderer.Texture`
"""
# render the text to a SDL_Surface structure
surf_ptr = ttf.TTF_RenderText_Solid(
self.font,
text.encode('utf8'),
sdl.SDL_Color())
if not surf_ptr:
raise SDLError('failed to render text to surface: {}'.format(
ttf.TTF_GetError()))
# retrieve a pointer to pixel data
surf = surf_ptr.contents
pixels = ctypes.cast(surf.pixels, ctypes.POINTER(ctypes.c_char))
# create and fill an OpenGL rectangle texture (that is, a texture which
# can have arbitrary non-power-of-two size and is accessed using
# UV coordinates which are linearly mapped to the texture size)
tex = glGenTextures(1)
glActiveTexture(GL_TEXTURE0)
glBindTexture(GL_TEXTURE_2D, tex)
glTexStorage2D(GL_TEXTURE_2D, 1, GL_R8, surf.w, surf.h)
glTexSubImage2D(
GL_TEXTURE_2D,
0,
0,
0,
surf.w,
surf.h,
GL_RED,
GL_UNSIGNED_BYTE,
pixels)
glBindTexture(GL_TEXTURE_2D, 0)
sdl.SDL_FreeSurface(surf_ptr)
return Texture(tex, surf.w, surf.h, GL_TEXTURE_2D)
def from_matrix(cls, matrix):
"""Creates a texture from given matrix file.
:param matrix: The matrix.
:type matrix: list
:returns: The texture instance.
:rtype: :class:`renderer.Texture`
"""
w, h = len(matrix[0]), len(matrix)
grid = bytes(chain.from_iterable(reversed(matrix)))
tex = glGenTextures(1)
glActiveTexture(GL_TEXTURE0)
glBindTexture(GL_TEXTURE_2D, tex)
# This code is necessary to handle non-power-of-two textures with small
# sizes.
# TODO: refactor this
param_ids = [
GL_UNPACK_ALIGNMENT,
GL_UNPACK_ROW_LENGTH,
GL_UNPACK_SKIP_ROWS,
GL_UNPACK_SKIP_PIXELS,
]
old_params = {
p: glGetInteger(p)
for p in param_ids
}
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0)
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0)
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0)
glTexStorage2D(GL_TEXTURE_2D, 1, GL_R8, w, h)
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, GL_RED, GL_UNSIGNED_BYTE, grid)
for p, v in old_params.items():
glPixelStorei(p, v)
glBindTexture(GL_TEXTURE_2D, 0)
return Texture(tex, w, h, GL_TEXTURE_2D)
def from_image(cls, image):
"""Creates a texture from given image file.
:param image: Image.
:type image: :class:`PIL.Image`
:returns: The texture instance.
:rtype: :class:`renderer.Texture`
"""
w, h = image.size
tex = glGenTextures(1)
glActiveTexture(GL_TEXTURE0)
glBindTexture(GL_TEXTURE_2D, tex)
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGB8, w, h)
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, GL_RGB, GL_UNSIGNED_BYTE, image.tobytes())
glBindTexture(GL_TEXTURE_2D, 0)
return Texture(tex, w, h)
def gl_init(self):
drawable = self.gl_begin()
w, h = self.size
log("GL Pixmap backing size: %d x %d, drawable=%s", w, h, drawable)
if not drawable:
return None
if not self.gl_setup:
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
glEnableClientState(GL_VERTEX_ARRAY)
glEnableClientState(GL_TEXTURE_COORD_ARRAY)
glDisable(GL_FRAGMENT_PROGRAM_ARB)
if self.textures is None:
self.textures = glGenTextures(3)
self.gl_setup = True
return drawable
def __init__(self, imagefile, points=[], alpha=1.0):
super(ImageActor, self).__init__()
im = Image.open(imagefile)
# Try to open the image file
try:
ix, iy, image = im.size[0], im.size[1], im.tostring("raw", "RGBA", 0, -1)
except SystemError:
ix, iy, image = im.size[0], im.size[1], im.tostring("raw", "RGBX", 0, -1)
# get a texture buffer
glActiveTexture(GL_TEXTURE0)
self.texid = glGenTextures(1)
# Bind the texture
glBindTexture(GL_TEXTURE_2D, self.texid)
glPixelStorei(GL_UNPACK_ALIGNMENT,1)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
# Upload the image
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, ix, iy, 0, GL_RGBA, GL_UNSIGNED_BYTE, image)
# Generate the points for the billboard
if points == []:
points = [Point(0,0), Point(ix,0), Point(ix,-iy), Point(0,-iy)]
if len(points) != 4:
raise Exception("Image needs 4 points, %d provided" % len(points))
# Generate the UV map
uv = [Point(0,1), Point(1,1), Point(1,0), Point(0,0)]
a = []
for i in [0,1,2,0,2,3]:
point = points[i]
tex = uv[i]
a.extend([point.x, point.y, tex.x, tex.y])
# Assign the VBO
super(ImageActor, self)._assignVBO(a)
self.alpha = float(alpha)
def loadTexture(image_obj, tex_name = 0): #e arg want_mipmaps
"""
Load texture data from current image object;
return have_mipmaps, tex_name
(also leave that texture bound, BTW)
"""
# note: some of this code has been copied into exprs/images.py, class
# texture_holder [bruce 061125]
ix, iy, image = image_obj.getTextureData()
# allocate texture object if necessary
if not tex_name:
tex_name = glGenTextures(1)
# It's deprecated to let this happen much. [070308]
print "debug fyi: texture_helpers.loadTexture allocated tex_name %r" %\
(tex_name,)
# note: by experiment (iMac G5 Panther), this returns a single number
# (1L, 2L, ...), not a list or tuple, but for an argument >1 it returns
# a list of longs. We depend on this behavior here. [bruce 060207]
tex_name = int(tex_name) # make sure it worked as expected
assert tex_name != 0
# initialize texture data
glBindTexture(GL_TEXTURE_2D, tex_name) # 2d texture (x and y size)
glPixelStorei(GL_UNPACK_ALIGNMENT,1) ###k what's this?
have_mipmaps = False
##want_mipmaps = debug_pref("smoother tiny textures",
## Choice_boolean_False, prefs_key = True)
want_mipmaps = True
if want_mipmaps:
gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGBA, ix, iy, GL_RGBA,
GL_UNSIGNED_BYTE, image)
have_mipmaps = True
else:
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, ix, iy, 0, GL_RGBA,
GL_UNSIGNED_BYTE, image)
# 0 is mipmap level, GL_RGBA is internal format, ix, iy is size, 0
# is borderwidth, and (GL_RGBA, GL_UNSIGNED_BYTE, image) describe
# the external image data. [bruce 060212 comment]
return have_mipmaps, tex_name
def load_texture(image):
image = limit_pixels_count(image, args.pixels_limit)
width, height = image.size
image = image.tostring("raw", "RGBX", 0, -1)
# Create Texture
_id = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, _id)
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
glTexImage2D(
GL_TEXTURE_2D, 0, 3, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image
)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL)
return _id
def __init__(self, stack, spacing):
s = np.array(stack, dtype=np.uint8, order='F')
w, h, d = s.shape
stack_texture = glGenTextures(1)
glActiveTexture(GL_TEXTURE0)
glBindTexture(GL_TEXTURE_3D, stack_texture)
glTexParameter(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameter(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
glTexParameter(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
glTexParameter(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
glTexParameter(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE)
glTexImage3D(GL_TEXTURE_3D, 0, GL_R8, d, h, w, 0, GL_RED,
GL_UNSIGNED_BYTE, s)
self.stack_texture = stack_texture
self.shape = s.shape
def gl_init_textures(self):
assert self.offscreen_fbo is None
assert self.shaders is None
self.textures = glGenTextures(5)
self.offscreen_fbo = glGenFramebuffers(1)
debug("%s.gl_init_textures() textures: %s, offscreen fbo: %s", self, self.textures, self.offscreen_fbo)
def get_gl_info_string(glpane): # grantham 20051129
"""
Return a string containing some useful information about the OpenGL
implementation.
Use the GL context from the given QGLWidget glpane (by calling
glpane.makeCurrent()).
"""
glpane.makeCurrent() #bruce 070308 added glpane arg and makeCurrent call
gl_info_string = ''
gl_info_string += 'GL_VENDOR : "%s"\n' % glGetString(GL_VENDOR)
gl_info_string += 'GL_VERSION : "%s"\n' % glGetString(GL_VERSION)
gl_info_string += 'GL_RENDERER : "%s"\n' % glGetString(GL_RENDERER)
gl_extensions = glGetString(GL_EXTENSIONS)
gl_extensions = gl_extensions.strip()
gl_extensions = gl_extensions.replace(" ", "\n* ")
gl_info_string += 'GL_EXTENSIONS : \n* %s\n' % gl_extensions
if debug_pref("Graphics Card Info: call glAreTexturesResident?",
Choice_boolean_False):
# Give a practical indication of how much video memory is available.
# Should also do this with VBOs.
# I'm pretty sure this code is right, but PyOpenGL seg faults in
# glAreTexturesResident, so it's disabled until I can figure that
# out. [grantham] [bruce 070308 added the debug_pref]
all_tex_in = True
tex_bytes = '\0' * (512 * 512 * 4)
tex_names = []
tex_count = 0
tex_names = glGenTextures(1024)
glEnable(GL_TEXTURE_2D)
while all_tex_in:
glBindTexture(GL_TEXTURE_2D, tex_names[tex_count])
gluBuild2DMipmaps(GL_TEXTURE_2D, 4, 512, 512, GL_RGBA,
GL_UNSIGNED_BYTE, tex_bytes)
tex_count += 1
glTexCoord2f(0.0, 0.0)
glBegin(GL_QUADS)
glVertex2f(0.0, 0.0)
glVertex2f(1.0, 0.0)
glVertex2f(1.0, 1.0)
glVertex2f(0.0, 1.0)
glEnd()
glFinish()
residences = glAreTexturesResident(tex_names[:tex_count])
all_tex_in = reduce(lambda a,b: a and b, residences)
# bruce 070308 sees this exception from this line:
# TypeError: reduce() arg 2 must support iteration
glDisable(GL_TEXTURE_2D)
glDeleteTextures(tex_names)
gl_info_string += "Could create %d 512x512 RGBA resident textures\n" \
% tex_count
pass
if True: ## or could be a debug_pref("Graphics Card Info: get all GL_MAX symbols?")
#bruce 090314 new feature
import OpenGL.GL
symbols = [x for x in dir(OpenGL.GL) if x.startswith('GL_MAX_')]
symbols.sort()
gl_info_string += '\n'
for symbol in symbols:
try:
numeric_symbol = getattr(OpenGL.GL, symbol)
intval = glGetInteger(numeric_symbol)
except:
# this happens to most symbols, not sure why
if debug_flags.atom_debug:
print_compact_traceback( "%s = ??: " % symbol )
# overkill, only the exception itself matters
# typical output (on Bruce's MacBookPro, 090314):
## GL_MAX_4D_TEXTURE_SIZE_SGIS = ??:
## <type 'exceptions.KeyError'>:
## ('Unknown specifier GL_MAX_4D_TEXTURE_SIZE_SGIS (33080)',
## 'Failure in cConverter <OpenGL.converters.SizedOutput object at 0x1457fab0>',
## [GL_MAX_4D_TEXTURE_SIZE_SGIS], 1, <OpenGL.wrapper.glGetIntegerv object at 0x1458aa30>)
## [graphics_card_info.py:122] [wrapper.py:676] [converters.py:195] [converters.py:234]
pass
pass ## gl_info_string += "%s = ??\n" % symbol
else:
gl_info_string += "%s = %r\n" % (symbol, intval)
continue
pass
return gl_info_string
def setupTransforms(self, transforms):
# note: this is only called from test_drawing.py (as of before 090302)
"""
Fill a block of transforms.
Depending on the setting of TEXTURE_XFORMS and UNIFORM_XFORMS, the
transforms are either in texture memory, or in a uniform array of mat4s
("constant memory"), or unsupported (error if we need any here).
@param transforms: A list of transform matrices, where each transform is
a flattened list (or Numpy array) of 16 numbers.
"""
self.n_transforms = nTransforms = len(transforms)
if not self.supports_transforms():
assert not nTransforms, "%r doesn't support transforms" % self
return
self.setActive(True) # Must activate before setting uniforms.
assert self._has_uniform("n_transforms") # redundant with following
glUniform1iARB(self._uniform("n_transforms"), self.n_transforms)
# The shader bypasses transform logic if n_transforms is 0.
# (Then location coordinates are in global modeling coordinates.)
if nTransforms > 0:
if UNIFORM_XFORMS:
# Load into constant memory. The GL_EXT_bindable_uniform
# extension supports sharing this array of mat4s through a VBO.
# XXX Need to bank-switch this data if more than N_CONST_XFORMS.
C_transforms = numpy.array(transforms, dtype = numpy.float32)
glUniformMatrix4fvARB(self._uniform("transforms"),
# Don't over-run the array size.
min(len(transforms), N_CONST_XFORMS),
GL_TRUE, # Transpose.
C_transforms)
elif TEXTURE_XFORMS:
# Generate a texture ID and bind the texture unit to it.
self.transform_memory = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, self.transform_memory)
## These seem to have no effect with a vertex shader.
## glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
## glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
# XXX Needed? glEnable(GL_TEXTURE_2D)
# Load the transform data into the texture.
#
# Problem: SIGSEGV kills Python in gleTextureImagePut under
# glTexImage2D with more than 250 transforms (16,000 bytes.)
# Maybe there's a 16-bit signed size calculation underthere, that's
# overflowing the sign bit... Work around by sending transforms to
# the texture unit in batches with glTexSubImage2D.)
glTexImage2D(GL_TEXTURE_2D, 0, # Level zero - base image, no mipmap.
GL_RGBA32F_ARB, # Internal format is floating point.
# Column major storage: width = N, height = 4 * RGBA.
nTransforms, 4 * 4, 0, # No border.
# Data format and type, null pointer to allocate space.
GL_RGBA, GL_FLOAT, None)
# XXX Split this off into a setTransforms method.
batchSize = 250
nBatches = (nTransforms + batchSize-1) / batchSize
for i in range(nBatches):
xStart = batchSize * i
xEnd = min(nTransforms, xStart + batchSize)
xSize = xEnd - xStart
glTexSubImage2D(GL_TEXTURE_2D, 0,
# Subimage x and y offsets and sizes.
xStart, 0, xSize, 4 * 4,
# List of matrices is flattened into a sequence.
GL_RGBA, GL_FLOAT, transforms[xStart:xEnd])
continue
# Read back to check proper loading.
if CHECK_TEXTURE_XFORM_LOADING:
mats = glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_FLOAT)
nMats = len(mats)
print "setupTransforms\n[[",
for i in range(nMats):
nElts = len(mats[i])
perLine = 8
nLines = (nElts + perLine-1) / perLine
for line in range(nLines):
jStart = perLine * line
jEnd = min(nElts, jStart + perLine)
for j in range(jStart, jEnd):
print "%.2f" % mats[i][j],
continue
if line < nLines-1:
print "\n ",
pass
if i < nMats-1:
print "]\n [",
pass
continue
print "]]"
pass
else:
# should never happen if SUPPORTS_XFORMS is defined correctly
assert 0, "can't setupTransforms unless UNIFORM_XFORMS or TEXTURE_XFORMS is set"
pass
self.setActive(False) # Deactivate again.
return
