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radv: calculate best compute resource limits

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Ported from RadeonSI.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset 2017-12-14 15:51:19 +01:00
parent 9fdc1437ba
commit 75b1c4997f
1 changed files with 14 additions and 1 deletions
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15
src/amd/vulkan/radv_cmd_buffer.c
View file

@ -2561,6 +2561,8 @@ radv_emit_compute_pipeline(struct radv_cmd_buffer *cmd_buffer)
{
struct radv_shader_variant *compute_shader;
struct radv_pipeline *pipeline = cmd_buffer->state.compute_pipeline;
unsigned compute_resource_limits;
unsigned waves_per_threadgroup;
uint64_t va;
if (!pipeline || pipeline == cmd_buffer->state.emitted_compute_pipeline)
@ -2572,7 +2574,7 @@ radv_emit_compute_pipeline(struct radv_cmd_buffer *cmd_buffer)
va = radv_buffer_get_va(compute_shader->bo) + compute_shader->bo_offset;
MAYBE_UNUSED unsigned cdw_max = radeon_check_space(cmd_buffer->device->ws,
cmd_buffer->cs, 16);
cmd_buffer->cs, 19);
radeon_set_sh_reg_seq(cmd_buffer->cs, R_00B830_COMPUTE_PGM_LO, 2);
radeon_emit(cmd_buffer->cs, va >> 8);
@ -2592,6 +2594,17 @@ radv_emit_compute_pipeline(struct radv_cmd_buffer *cmd_buffer)
S_00B860_WAVES(pipeline->max_waves) |
S_00B860_WAVESIZE(pipeline->scratch_bytes_per_wave >> 10));
/* Calculate best compute resource limits. */
waves_per_threadgroup =
DIV_ROUND_UP(compute_shader->info.cs.block_size[0] *
compute_shader->info.cs.block_size[1] *
compute_shader->info.cs.block_size[2], 64);
compute_resource_limits =
S_00B854_SIMD_DEST_CNTL(waves_per_threadgroup % 4 == 0);
radeon_set_sh_reg(cmd_buffer->cs, R_00B854_COMPUTE_RESOURCE_LIMITS,
compute_resource_limits);
radeon_set_sh_reg_seq(cmd_buffer->cs, R_00B81C_COMPUTE_NUM_THREAD_X, 3);
radeon_emit(cmd_buffer->cs,
S_00B81C_NUM_THREAD_FULL(compute_shader->info.cs.block_size[0]));