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radv/gfx10: support pixel shaders without exports

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Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Samuel Pitoiset
2019-07-16 09:34:39 +02:00
parent 1b2bfeaaaa
commit 27d91062a8
1 changed files with 7 additions and 1 deletions
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8
src/amd/vulkan/radv_pipeline.c
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@@ -4283,9 +4283,15 @@ radv_pipeline_init(struct radv_pipeline *pipeline,
* stalls without this setting. * stalls without this setting.
* *
* Don't add this to CB_SHADER_MASK. * Don't add this to CB_SHADER_MASK.
*
* GFX10 supports pixel shaders without exports by setting both the
* color and Z formats to SPI_SHADER_ZERO. The hw will skip export
* instructions if any are present.
*/ */
struct radv_shader_variant *ps = pipeline->shaders[MESA_SHADER_FRAGMENT]; struct radv_shader_variant *ps = pipeline->shaders[MESA_SHADER_FRAGMENT];
if (!blend.spi_shader_col_format) { if ((pipeline->device->physical_device->rad_info.chip_class <= GFX9 ||
ps->info.fs.can_discard) &&
!blend.spi_shader_col_format) {
if (!ps->info.info.ps.writes_z && if (!ps->info.info.ps.writes_z &&
!ps->info.info.ps.writes_stencil && !ps->info.info.ps.writes_stencil &&
!ps->info.info.ps.writes_sample_mask) !ps->info.info.ps.writes_sample_mask)