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anv/gen7: Use predicated rendering for indirect compute

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For OpenGL, see commit 9a939ebb47.

Fixes:
 * dEQP-VK.compute.indirect_dispatch.upload_buffer.empty_command
 * dEQP-VK.compute.indirect_dispatch.gen_in_compute.empty_command

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
This commit is contained in:
Jordan Justen
2016-03-02 01:11:29 -08:00
committed by Jason Ekstrand
parent da4745104c
commit 98cdce1ce4
1 changed files with 45 additions and 0 deletions
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45
src/intel/vulkan/genX_cmd_buffer.c
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@@ -496,6 +496,9 @@ void genX(CmdDispatch)(
#define GPGPU_DISPATCHDIMY 0x2504
#define GPGPU_DISPATCHDIMZ 0x2508
#define MI_PREDICATE_SRC0 0x2400
#define MI_PREDICATE_SRC1 0x2408
void genX(CmdDispatchIndirect)(
VkCommandBuffer commandBuffer,
VkBuffer _buffer,
@@ -520,8 +523,50 @@ void genX(CmdDispatchIndirect)(
emit_lrm(batch, GPGPU_DISPATCHDIMY, bo, bo_offset + 4);
emit_lrm(batch, GPGPU_DISPATCHDIMZ, bo, bo_offset + 8);
#if GEN_GEN <= 7
/* Clear upper 32-bits of SRC0 and all 64-bits of SRC1 */
emit_lri(batch, MI_PREDICATE_SRC0 + 4, 0);
emit_lri(batch, MI_PREDICATE_SRC1 + 0, 0);
emit_lri(batch, MI_PREDICATE_SRC1 + 4, 0);
/* Load compute_dispatch_indirect_x_size into SRC0 */
emit_lrm(batch, MI_PREDICATE_SRC0, bo, bo_offset + 0);
/* predicate = (compute_dispatch_indirect_x_size == 0); */
anv_batch_emit(batch, GENX(MI_PREDICATE),
.LoadOperation = LOAD_LOAD,
.CombineOperation = COMBINE_SET,
.CompareOperation = COMPARE_SRCS_EQUAL);
/* Load compute_dispatch_indirect_y_size into SRC0 */
emit_lrm(batch, MI_PREDICATE_SRC0, bo, bo_offset + 4);
/* predicate |= (compute_dispatch_indirect_y_size == 0); */
anv_batch_emit(batch, GENX(MI_PREDICATE),
.LoadOperation = LOAD_LOAD,
.CombineOperation = COMBINE_OR,
.CompareOperation = COMPARE_SRCS_EQUAL);
/* Load compute_dispatch_indirect_z_size into SRC0 */
emit_lrm(batch, MI_PREDICATE_SRC0, bo, bo_offset + 8);
/* predicate |= (compute_dispatch_indirect_z_size == 0); */
anv_batch_emit(batch, GENX(MI_PREDICATE),
.LoadOperation = LOAD_LOAD,
.CombineOperation = COMBINE_OR,
.CompareOperation = COMPARE_SRCS_EQUAL);
/* predicate = !predicate; */
#define COMPARE_FALSE 1
anv_batch_emit(batch, GENX(MI_PREDICATE),
.LoadOperation = LOAD_LOADINV,
.CombineOperation = COMBINE_OR,
.CompareOperation = COMPARE_FALSE);
#endif
anv_batch_emit(batch, GENX(GPGPU_WALKER),
.IndirectParameterEnable = true,
.PredicateEnable = GEN_GEN <= 7,
.SIMDSize = prog_data->simd_size / 16,
.ThreadDepthCounterMaximum = 0,
.ThreadHeightCounterMaximum = 0,