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mesa: Add driver hooks for texture image mapping/unmapping.

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ctx->Driver.MapTextureImage() / UnmapTextureImage() will be called by
the glTex[Sub]Image(), glGetTexImage() functions, etc. when we're
accessing texture data, and also for software rendering when accessing
texture data.

Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Brian Paul 2011-07-14 20:57:34 -06:00 • committed by Eric Anholt
parent 68f8cf7263
commit 570016cef2
1 changed files with 19 additions and 0 deletions
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19
src/mesa/main/dd.h
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@ -481,6 +481,25 @@ struct dd_function_table {
*/
void (*FreeTextureImageBuffer)( struct gl_context *ctx, struct gl_texture_image *tImage );
/** Map a slice of a texture image into user space.
* \param texImage the texture image
* \param slice the 3D image slice or array texture slice
* \param x, y, w, h region of interest
* \param mode bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
* \param mapOut returns start of mapping of region of interest
* \param rowStrideOut returns row stride (in bytes)
*/
void (*MapTextureImage)(struct gl_context *ctx,
struct gl_texture_image *texImage,
GLuint slice,
GLuint x, GLuint y, GLuint w, GLuint h,
GLbitfield mode,
GLubyte **mapOut, GLint *rowStrideOut);
void (*UnmapTextureImage)(struct gl_context *ctx,
struct gl_texture_image *texImage,
GLuint slice);
/** Map texture image data into user space */
void (*MapTexture)( struct gl_context *ctx, struct gl_texture_object *tObj );
/** Unmap texture images from user space */