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texcompress.c File Reference

Helper functions for texture compression. More...

#include "glheader.h"
#include "imports.h"
#include "colormac.h"
#include "context.h"
#include "image.h"
#include "texcompress.h"
#include "texformat.h"
#include "texstore.h"

Functions
GLuint	_mesa_get_compressed_formats (GLcontext *ctx, GLint *formats)
	Get the list of supported internal compression formats. More...
GLuint	_mesa_compressed_texture_size (GLcontext *ctx, GLsizei width, GLsizei height, GLsizei depth, GLenum format)
	Return number of bytes needed to store a texture of the given size using the specified compressed format. More...
GLint	_mesa_compressed_row_stride (GLenum format, GLsizei width)
GLubyte *	_mesa_compressed_image_address (GLint col, GLint row, GLint img, GLenum format, GLsizei width, const GLubyte *image)

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Detailed Description

Helper functions for texture compression.

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Function Documentation

GLubyte* _mesa_compressed_image_address (  GLint    col, GLint    row, GLint    img, GLenum    format, GLsizei    width, const GLubyte *    image )

GLint _mesa_compressed_row_stride (  GLenum    format, GLsizei    width )

GLuint _mesa_compressed_texture_size (  GLcontext *    ctx, GLsizei    width, GLsizei    height, GLsizei    depth, GLenum    format )

Return number of bytes needed to store a texture of the given size using the specified compressed format. This is called via the ctx->Driver.CompressedTextureSize function, unless a device driver overrides it. Parameters: width  texture width in texels. height  texture height in texels. depth  texture depth in texels. format  - one of the specific compressed texture formats Returns: size in bytes, or zero if bad format

GLuint _mesa_get_compressed_formats (  GLcontext *    ctx, GLint *    formats )

Get the list of supported internal compression formats. Parameters: ctx  GL context. formats  the resulting format list (may be NULL). Returns: number of formats.

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