GLCOMPRESSEDTEXIMAGE(3G) OpenGL 3.3 GLCOMPRESSEDTEXIMAGE(3G)
glCompressedTexImage3D - specify a three-dimensional texture image in a compressed format
void glCompressedTexImage3D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border,
GLsizei imageSize, const GLvoid * data);
Specifies the target texture. Must be GL_TEXTURE_3D, GL_PROXY_TEXTURE_3D, GL_TEXTURE_2D_ARRAY or GL_PROXY_TEXTURE_2D_ARRAY.
Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap reduction image.
Specifies the format of the compressed image data stored at address data.
Specifies the width of the texture image. All implementations support 3D texture images that are at least 16 texels wide.
Specifies the height of the texture image. All implementations support 3D texture images that are at least 16 texels high.
Specifies the depth of the texture image. All implementations support 3D texture images that are at least 16 texels deep.
This value must be 0.
Specifies the number of unsigned bytes of image data starting at the address specified by data.
Specifies a pointer to the compressed image data in memory.
Texturing allows elements of an image array to be read by shaders.
glCompressedTexImage3D loads a previously defined, and retrieved, compressed three-dimensional texture image if target is GL_TEXTURE_3D
If target is GL_TEXTURE_2D_ARRAY, data is treated as an array of compressed 2D textures.
If target is GL_PROXY_TEXTURE_3D or GL_PROXY_TEXTURE_2D_ARRAY, no data is read from data, but all of the texture image state is
recalculated, checked for consistency, and checked against the implementation's capabilities. If the implementation cannot handle a texture
of the requested texture size, it sets all of the image state to 0, but does not generate an error (see glGetError()). To query for an
entire mipmap array, use an image array level greater than or equal to 1.
internalformat must be a known compressed image format (such as GL_RGTC) or an extension-specified compressed-texture format. When a
texture is loaded with glTexImage2D() using a generic compressed texture format (e.g., GL_COMPRESSED_RGB), the GL selects from one of its
extensions supporting compressed textures. In order to load the compressed texture image using glCompressedTexImage3D, query the compressed
texture image's size and format using 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 internalformat is not one of the generic compressed internal formats: GL_COMPRESSED_RED, GL_COMPRESSED_RG,
GL_COMPRESSED_RGB, GL_COMPRESSED_RGBA. GL_COMPRESSED_SRGB, 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
GL_INVALID_VALUE is generated if border is not 0.
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.
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
glActiveTexture(), glCompressedTexImage1D(), glCompressedTexImage2D(), glCompressedTexSubImage1D(), glCompressedTexSubImage2D(),
glCompressedTexSubImage3D(), glCopyTexImage1D(), glCopyTexSubImage1D(), glCopyTexSubImage2D(), glCopyTexSubImage3D(), glPixelStore(),
glTexImage1D(), glTexImage2D(), glTexSubImage1D(), glTexSubImage2D(), glTexSubImage3D(), glTexParameter()
Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see
OpenGL 3.3 03/08/2011 GLCOMPRESSEDTEXIMAGE(3G)