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iris: Fall back to 1x1x1 null surface if no framebuffer supplied

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If the state tracker never gave us the framebuffer dimensions via
a set_framebuffer_state() call, just fall back to the unbound texture
null surface, which is 1x1x1.  Otherwise we'd use a NULL resource
(no pun intended).
This commit is contained in:
Kenneth Graunke 2018-10-24 14:16:38 -07:00
parent 5d1a9db720
commit 927c4a21bd
1 changed files with 4 additions and 0 deletions
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4
src/gallium/drivers/iris/iris_state.c
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@ -3354,6 +3354,10 @@ use_null_surface(struct iris_batch *batch, struct iris_context *ice)
static uint32_t
use_null_fb_surface(struct iris_batch *batch, struct iris_context *ice)
{
/* If set_framebuffer_state() was never called, fall back to 1x1x1 */
if (!ice->state.null_fb.res)
return use_null_surface(batch, ice);
struct iris_bo *state_bo = iris_resource_bo(ice->state.null_fb.res);
iris_use_pinned_bo(batch, state_bo, false);