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st/mesa: Add implementation of MapTextureImage.

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Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Brian Paul 2011-07-29 17:25:38 -07:00 • committed by Eric Anholt
parent 570016cef2
commit 0abb2659dd
1 changed files with 45 additions and 0 deletions
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45
src/mesa/state_tracker/st_cb_texture.c
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@ -161,6 +161,49 @@ st_FreeTextureImageBuffer(struct gl_context * ctx, struct gl_texture_image *texI
}
/** called via ctx->Driver.MapTextureImage() */
static void
st_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)
{
struct st_context *st = st_context(ctx);
struct st_texture_image *stImage = st_texture_image(texImage);
unsigned pipeMode;
GLubyte *map;
pipeMode = 0x0;
if (mode & GL_MAP_READ_BIT)
pipeMode |= PIPE_TRANSFER_READ;
if (mode & GL_MAP_WRITE_BIT)
pipeMode |= PIPE_TRANSFER_WRITE;
map = st_texture_image_map(st, stImage, slice, pipeMode, x, y, w, h);
if (map) {
*mapOut = map;
*rowStrideOut = stImage->transfer->stride;
}
else {
*mapOut = NULL;
*rowStrideOut = 0;
}
}
/** called via ctx->Driver.UnmapTextureImage() */
static void
st_UnmapTextureImage(struct gl_context *ctx,
struct gl_texture_image *texImage,
GLuint slice)
{
struct st_context *st = st_context(ctx);
struct st_texture_image *stImage = st_texture_image(texImage);
st_texture_image_unmap(st, stImage);
}
/**
* From linux kernel i386 header files, copes with odd sizes better
* than COPY_DWORDS would:
@ -1881,6 +1924,8 @@ st_init_texture_functions(struct dd_function_table *functions)
functions->NewTextureImage = st_NewTextureImage;
functions->DeleteTexture = st_DeleteTextureObject;
functions->FreeTextureImageBuffer = st_FreeTextureImageBuffer;
functions->MapTextureImage = st_MapTextureImage;
functions->UnmapTextureImage = st_UnmapTextureImage;
functions->TextureMemCpy = do_memcpy;