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nvc0: avoid tex read fault from compute shaders on GK110

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After some investigation, it seems like that disabling the UNK02C4
command avoid a read fault with texelFetch() from a compute shader.

I have no clue on what this method actually does, but this avoid the
GPU to hang with basic-texelFetch.shader_test without introducing any
compute-related regressions.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Acked-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Samuel Pitoiset 2016-04-10 22:08:34 +02:00
parent 87a4fb516e
commit 7143068296
1 changed files with 3 additions and 0 deletions
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3
src/gallium/drivers/nouveau/nvc0/nve4_compute.c
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@ -134,8 +134,11 @@ nve4_screen_compute_setup(struct nvc0_screen *screen,
BEGIN_NVC0(push, NVE4_CP(TEX_CB_INDEX), 1);
PUSH_DATA (push, 7); /* does not interfere with 3D */
/* Disabling this UNK command avoid a read fault when using texelFetch()
* from a compute shader for weird reasons.
if (obj_class == NVF0_COMPUTE_CLASS)
IMMED_NVC0(push, SUBC_CP(0x02c4), 1);
*/
address = screen->uniform_bo->offset + NVC0_CB_AUX_INFO(5);