Class ARBCompressedTexturePixelStorage
- java.lang.Object
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- org.lwjgl.opengl.ARBCompressedTexturePixelStorage
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public final class ARBCompressedTexturePixelStorage extends java.lang.Object
Native bindings to the ARB_compressed_texture_pixel_storage extension.This extension expands the functionality of the
PixelStorei
modes to allowUNPACK_ROW_LENGTH
,UNPACK_SKIP_ROWS
,UNPACK_SKIP_PIXELS
,UNPACK_IMAGE_HEIGHT
andUNPACK_SKIP_IMAGES
to affect the operation of CompressedTexImage*D and CompressedTexSubImage*D. Similarly, it also allowsPACK_ROW_LENGTH
,PACK_SKIP_ROWS
,PACK_SKIP_PIXELS
,PACK_IMAGE_HEIGHT
andPACK_SKIP_IMAGES
to affect the operation of GetCompressedTexImage*D. This allows data to be transferred to or from a specified sub-rectangle of a larger compressed image.This extension is designed primarily to support compressed image formats with fixed-size blocks. To use this new mechanism, an application should program new parameters UNPACK_COMPRESSED_BLOCK_{WIDTH,HEIGHT,DEPTH,SIZE} to indicate the number of texels in each dimension of the fixed-size block as well as the number of bytes consumed by each block. These parameters, in addition to the existing PixelStore parameters, are used to identify a collection of bytes in client memory or a buffer object's data store to use as compressed texture data. This operation is unlikely to have the desired results if the client programs a block size inconsistent with the underlying compressed image format, or if the compressed image format has variable-sized blocks.
Requires
OpenGL 2.1
. Promoted to core inOpenGL 4.2
.
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Field Summary
Fields Modifier and Type Field and Description static int
GL_PACK_COMPRESSED_BLOCK_DEPTH
GL_PACK_COMPRESSED_BLOCK_HEIGHT
GL_PACK_COMPRESSED_BLOCK_SIZE
GL_PACK_COMPRESSED_BLOCK_WIDTH
GL_UNPACK_COMPRESSED_BLOCK_DEPTH
GL_UNPACK_COMPRESSED_BLOCK_HEIGHT
GL_UNPACK_COMPRESSED_BLOCK_SIZE
GL_UNPACK_COMPRESSED_BLOCK_WIDTHAccepted by thepname
parameter of PixelStore[fi], GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.
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Field Detail
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GL_UNPACK_COMPRESSED_BLOCK_WIDTH, GL_UNPACK_COMPRESSED_BLOCK_HEIGHT, GL_UNPACK_COMPRESSED_BLOCK_DEPTH, GL_UNPACK_COMPRESSED_BLOCK_SIZE, GL_PACK_COMPRESSED_BLOCK_WIDTH, GL_PACK_COMPRESSED_BLOCK_HEIGHT, GL_PACK_COMPRESSED_BLOCK_DEPTH, GL_PACK_COMPRESSED_BLOCK_SIZE
Accepted by thepname
parameter of PixelStore[fi], GetBooleanv, GetIntegerv, GetInteger64v, GetFloatv, and GetDoublev.
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