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llvmpipe: implement the new can_create_resource() function 

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This commit is contained in:
Brian Paul 2012-09-16 19:43:50 -06:00
parent ead8847d44
commit b9e88c5592
1 changed files with 23 additions and 5 deletions
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28
src/gallium/drivers/llvmpipe/lp_texture.c
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@ -105,7 +105,8 @@ alloc_layout_array(unsigned num_slices, unsigned width, unsigned height)
*/
static boolean
llvmpipe_texture_layout(struct llvmpipe_screen *screen,
struct llvmpipe_resource *lpr)
struct llvmpipe_resource *lpr,
boolean allocate)
{
struct pipe_resource *pt = &lpr->base;
unsigned level;
@ -163,9 +164,11 @@ llvmpipe_texture_layout(struct llvmpipe_screen *screen,
lpr->num_slices_faces[level] = num_slices;
lpr->layout[level] = alloc_layout_array(num_slices, width, height);
if (!lpr->layout[level]) {
goto fail;
if (allocate) {
lpr->layout[level] = alloc_layout_array(num_slices, width, height);
if (!lpr->layout[level]) {
goto fail;
}
}
}
@ -191,6 +194,20 @@ fail:
}
/**
* Check the size of the texture specified by 'res'.
* \return TRUE if OK, FALSE if too large.
*/
static boolean
llvmpipe_can_create_resource(struct pipe_screen *screen,
const struct pipe_resource *res)
{
struct llvmpipe_resource lpr;
memset(&lpr, 0, sizeof(lpr));
lpr.base = *res;
return llvmpipe_texture_layout(llvmpipe_screen(screen), &lpr, FALSE);
}
static boolean
llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen,
@ -264,7 +281,7 @@ llvmpipe_resource_create(struct pipe_screen *_screen,
}
else {
/* texture map */
if (!llvmpipe_texture_layout(screen, lpr))
if (!llvmpipe_texture_layout(screen, lpr, TRUE))
goto fail;
assert(lpr->layout[0][0] == LP_TEX_LAYOUT_NONE);
}
@ -1436,6 +1453,7 @@ llvmpipe_init_screen_resource_funcs(struct pipe_screen *screen)
screen->resource_destroy = llvmpipe_resource_destroy;
screen->resource_from_handle = llvmpipe_resource_from_handle;
screen->resource_get_handle = llvmpipe_resource_get_handle;
screen->can_create_resource = llvmpipe_can_create_resource;
}