For the render pipeline, the upload_sampler_state_table atom emits
3DSTATE_BINDING_TABLE_POINTERS_XS. It tries to avoid this for compute:
if (GEN_GEN >= 7 && stage_state->stage != MESA_SHADER_COMPUTE) {
/* Emit a 3DSTATE_SAMPLER_STATE_POINTERS_XS packet. */
genX(emit_sampler_state_pointers_xs)(brw, stage_state);
} ...
However, we were failing to initialize brw->cs.base.stage, so it was
left as 0 (MESA_SHADER_VERTEX), causing this condition to break. We
then emitted 3DSTATE_SAMPLER_STATE_POINTERS_VS in GPGPU mode, when
trying to upload CS samplers. Nothing good can come of this.
Cc: [email protected]
---
src/mesa/drivers/dri/i965/brw_context.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/mesa/drivers/dri/i965/brw_context.c
b/src/mesa/drivers/dri/i965/brw_context.c
index eed42468b11..95b00bf8fce 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -874,6 +874,7 @@ brwCreateContext(gl_api api,
brw->tes.base.stage = MESA_SHADER_TESS_EVAL;
brw->gs.base.stage = MESA_SHADER_GEOMETRY;
brw->wm.base.stage = MESA_SHADER_FRAGMENT;
+ brw->cs.base.stage = MESA_SHADER_COMPUTE;
if (devinfo->gen >= 8) {
brw->vtbl.emit_depth_stencil_hiz = gen8_emit_depth_stencil_hiz;
} else if (devinfo->gen >= 7) {
--
2.15.0
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