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mesa: new comments, assertion related to glClearTexSubImage 

Reviewed-by: Charmaine Lee <charmainel@vmware.com>
This commit is contained in:
Brian Paul 2017-07-05 14:44:08 -06:00
parent ccdcce3638
commit f3a608d9f9
1 changed files with 12 additions and 0 deletions
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12
src/mesa/main/teximage.c
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@ -4361,6 +4361,15 @@ get_tex_obj_for_clear(struct gl_context *ctx,
return texObj;
}
/**
* For clearing cube textures, the zoffset and depth parameters indicate
* which cube map faces are to be cleared. This is the one case where we
* need to be concerned with multiple gl_texture_images. This function
* returns the array of texture images to clear for cube maps, or one
* texture image otherwise.
* \return number of texture images, 0 for error, 6 for cube, 1 otherwise.
*/
static int
get_tex_images_for_clear(struct gl_context *ctx,
const char *function,
@ -4430,6 +4439,7 @@ _mesa_ClearTexSubImage( GLuint texture, GLint level,
minDepth = -(int) texImages[0]->Border;
maxDepth = texImages[0]->Depth;
} else {
assert(numImages == MAX_FACES);
minDepth = 0;
maxDepth = numImages;
}
@ -4459,7 +4469,9 @@ _mesa_ClearTexSubImage( GLuint texture, GLint level,
data ? clearValue[0] : NULL);
}
} else {
/* loop over cube face images */
for (i = zoffset; i < zoffset + depth; i++) {
assert(i < MAX_FACES);
if (!check_clear_tex_image(ctx, "glClearTexSubImage",
texImages[i],
format, type, data, clearValue[i]))