glCompressedTexSubImage3D — specify a three-dimensional texture subimage in a compressed format
void glCompressedTexSubImage3D( | GLenum | target, |
| GLint | level, | |
| GLint | xoffset, | |
| GLint | yoffset, | |
| GLint | zoffset, | |
| GLsizei | width, | |
| GLsizei | height, | |
| GLsizei | depth, | |
| GLenum | format, | |
| GLsizei | imageSize, | |
| const GLvoid * | data); |
target
Specifies the target texture.
Must be GL_TEXTURE_3D.
levelSpecifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap reduction image.
xoffsetSpecifies a texel offset in the x direction within the texture array.
yoffsetSpecifies a texel offset in the y direction within the texture array.
widthSpecifies the width of the texture subimage.
heightSpecifies the height of the texture subimage.
depthSpecifies the depth of the texture subimage.
format
Specifies the format of the compressed image data stored at address data.
imageSize
Specifies the number of unsigned bytes of image data starting at the
address specified by data.
dataSpecifies a pointer to the compressed image data in memory.
Texturing maps a portion of a specified texture image onto each graphical
primitive for which texturing is enabled. To enable and disable
three-dimensional texturing, call glEnable and glDisable with argument
GL_TEXTURE_3D.
glCompressedTexSubImage3D redefines a contiguous subregion of an existing three-dimensional
texture image. The texels referenced by data replace the portion of the
existing texture array with x indices xoffset and
yoffset and
zoffset and
format must be an extension-specified
compressed-texture format. The format of the compressed texture
image is selected by the GL implementation that compressed it (see
glTexImage3D) and should be queried at the time the texture was
compressed with glGetTexLevelParameter.
If a non-zero named buffer object is bound to the GL_PIXEL_UNPACK_BUFFER target
(see glBindBuffer) while a texture image is
specified, data is treated as a byte offset into the buffer object's data store.
GL_INVALID_ENUM is generated if format is one of these generic compressed internal formats:
GL_COMPRESSED_ALPHA,
GL_COMPRESSED_LUMINANCE,
GL_COMPRESSED_LUMINANCE_ALPHA,
GL_COMPRESSED_INTENSITY,
GL_COMPRESSED_RGB,
GL_COMPRESSED_RGBA,
GL_COMPRESSED_SLUMINANCE,
GL_COMPRESSED_SLUMINANCE_ALPHA,
GL_COMPRESSED_SRGB,
GL_COMPRESSED_SRGBA, or
GL_COMPRESSED_SRGB_ALPHA.
GL_INVALID_VALUE is generated if imageSize is not consistent with
the format, dimensions, and contents of the specified compressed image
data.
GL_INVALID_OPERATION is generated if parameter combinations are not
supported by the specific compressed internal format as specified in the
specific texture compression extension.
GL_INVALID_OPERATION is generated if a non-zero buffer object name is bound to the
GL_PIXEL_UNPACK_BUFFER target and the buffer object's data store is currently mapped.
GL_INVALID_OPERATION is generated if a non-zero buffer object name is bound to the
GL_PIXEL_UNPACK_BUFFER target and the data would be unpacked from the buffer
object such that the memory reads required would exceed the data store size.
GL_INVALID_OPERATION is generated if glCompressedTexSubImage3D
is executed between the execution of glBegin
and the corresponding execution of glEnd.
Undefined results, including abnormal program termination, are generated if
data is not encoded in a manner consistent with the extension
specification defining the internal compression format.
glGet with argument GL_TEXTURE_COMPRESSED
glGet with argument GL_PIXEL_UNPACK_BUFFER_BINDING
glGetTexLevelParameter with arguments GL_TEXTURE_INTERNAL_FORMAT
and GL_TEXTURE_COMPRESSED_IMAGE_SIZE
glIsEnabled with argument GL_TEXTURE_3D
glActiveTexture, glColorTable, glCompressedTexImage1D, glCompressedTexImage2D, glCompressedTexImage3D, glCompressedTexSubImage1D, glCompressedTexSubImage2D, glConvolutionFilter1D, glCopyPixels, glCopyTexImage1D, glCopyTexImage2D, glCopyTexSubImage1D, glCopyTexSubImage2D, glCopyTexSubImage3D, glDrawPixels, glMatrixMode, glPixelStore, glPixelTransfer, glTexEnv, glTexGen, glTexImage2D, glTexImage3D, glTexSubImage1D, glTexSubImage2D, glTexSubImage3D, glTexParameter
Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.