def __init__(self, size: Tuple[int, int], component: int, data):
self.width, self.height = size
sized_format = (gl.GL_R8, gl.GL_RG8, gl.GL_RGB8,
gl.GL_RGBA8)[component - 1]
self.format = (gl.GL_R, gl.GL_RG, gl.GL_RGB, gl.GL_RGBA)[component - 1]
gl.glActiveTexture(gl.GL_TEXTURE0 +
0) # If we need other texture unit...
self.texture_id = texture_id = gl.GLuint()
gl.glGenTextures(1, byref(self.texture_id))
if self.texture_id.value == 0:
raise ShaderException("Cannot create Texture.")
gl.glBindTexture(gl.GL_TEXTURE_2D, self.texture_id)
gl.glPixelStorei(gl.GL_PACK_ALIGNMENT, 1)
gl.glPixelStorei(gl.GL_UNPACK_ALIGNMENT, 1)
try:
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, sized_format, self.width,
self.height, 0, self.format, gl.GL_UNSIGNED_BYTE,
data)
except gl.GLException:
raise gl.GLException(
f"Unable to create texture. {gl.GL_MAX_TEXTURE_SIZE} {size}")
gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER,
gl.GL_LINEAR)
gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER,
gl.GL_LINEAR)
weakref.finalize(self, Texture.release, texture_id)
def my_errcheck(result, func, arguments):
from pyglet import gl
error = gl.glGetError()
if error and error != 1286:
# HACK: The 1286(INVALID_FRAMEBUFFER_OPERATION) error again!
# This time I DIDN'T EVEN USE FBO! ATI!!
msg = ctypes.cast(gl.gluErrorString(error), ctypes.c_char_p).value
raise gl.GLException((error, msg))
return result
def _texture_2d(self, data):
"""Create a 2D texture"""
# Make sure we unpack the pixel data with correct alignment
# or we'll end up with corrupted textures
gl.glPixelStorei(gl.GL_UNPACK_ALIGNMENT, self._alignment)
gl.glPixelStorei(gl.GL_PACK_ALIGNMENT, self._alignment)
# Create depth 2d texture
if self._depth:
gl.glTexImage2D(
self._target,
0, # level
gl.GL_DEPTH_COMPONENT24,
self._width,
self._height,
0,
gl.GL_DEPTH_COMPONENT,
gl.GL_FLOAT,
data,
)
self.compare_func = "<="
# Create normal 2d texture
else:
try:
format_info = pixel_formats[self._dtype]
except KeyError:
raise ValueError(
f"dype '{self._dtype}' not support. Supported types are : {tuple(pixel_formats.keys())}"
)
try:
(
_format,
_internal_format,
self._type,
self._component_size,
) = format_info
self._format = _format[self._components]
self._internal_format = _internal_format[self._components]
gl.glTexImage2D(
self._target, # target
0, # level
self._internal_format, # internal_format
self._width, # width
self._height, # height
0, # border
self._format, # format
self._type, # type
data, # data
)
except gl.GLException as ex:
raise gl.GLException(
(
f"Unable to create texture: {ex} : dtype={self._dtype} size={self.size} components={self._components} "
"MAX_TEXTURE_SIZE = {self.ctx.limits.MAX_TEXTURE_SIZE}"
)
)
def __init__(self,
ctx: 'Context',
size: Tuple[int, int],
*,
components: int = 4,
dtype: str = 'f1',
data: Any = None,
filter: Tuple[gl.GLuint, gl.GLuint] = None,
wrap_x: gl.GLuint = None,
wrap_y: gl.GLuint = None):
"""
A texture can be created with or without initial data.
NOTE: Currently does not support multisample textures even
thought ``samples`` is exposed.
:param Context ctx: The context the object belongs to
:param Tuple[int, int] size: The size of the texture
:param int components: The number of components (1: R, 2: RG, 3: RGB, 4: RGBA)
:param str dtype: The data type of each component: f1, f2, f4 / i1, i2, i4 / u1, u2, u4
:param Any data: The byte data of the texture. bytes or anything supporting the buffer protocol.
:param Tuple[gl.GLuint, gl.GLuint] filter: The minification/magnification filter of the texture
:param gl.GLuint wrap_s
:param data: The texture data (optional)
"""
self._ctx = ctx
self._width, self._height = size
self._dtype = dtype
self._components = components
self._target = gl.GL_TEXTURE_2D
self._samples = 0
# Default filters for float and integer textures
if 'f' in self.dtype:
self._filter = gl.GL_LINEAR, gl.GL_LINEAR
else:
self._filter = gl.GL_NEAREST, gl.GL_NEAREST
self._wrap_x = gl.GL_REPEAT
self._wrap_y = gl.GL_REPEAT
if components not in [1, 2, 3, 4]:
raise ValueError("Components must be 1, 2, 3 or 4")
try:
format_info = self._formats[self._dtype]
except KeyError:
raise ValueError(
f"dype '{dtype}' not support. Supported types are : {tuple(self._formats.keys())}"
)
gl.glActiveTexture(
gl.GL_TEXTURE0) # Create textures in the default channel (0)
self._glo = glo = gl.GLuint()
gl.glGenTextures(1, byref(self._glo))
if self._glo.value == 0:
raise RuntimeError(
"Cannot create Texture. OpenGL failed to generate a texture id"
)
gl.glBindTexture(self._target, self._glo)
gl.glPixelStorei(gl.GL_PACK_ALIGNMENT, 1)
gl.glPixelStorei(gl.GL_UNPACK_ALIGNMENT, 1)
if data is not None:
byte_length, data = data_to_ctypes(data)
try:
_format, _internal_format, self._type, self._component_size = format_info
self._format = _format[components]
self._internal_format = _internal_format[components]
gl.glTexImage2D(
self._target, # target
0, # level
self._internal_format, # internal_format
self._width, # width
self._height, # height
0, # border
self._format, # format
self._type, # type
data # data
)
except gl.GLException as ex:
raise gl.GLException((
f"Unable to create texture: {ex} : dtype={dtype} size={size} components={components} "
"MAX_TEXTURE_SIZE = {self.ctx.limits.MAX_TEXTURE_SIZE}"))
self.filter = filter or self._filter
self.wrap_x = wrap_x or self._wrap_x
self.wrap_y = wrap_y or self._wrap_y
self.ctx.stats.incr('texture')
weakref.finalize(self, Texture.release, self._ctx, glo)