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radv: disable the DX10 diamond test for better line rasterization perf

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Ported from RadeonSI. PAL also doesn't enable it for Vulkan.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13066>
This commit is contained in:
Samuel Pitoiset
2021-09-27 17:48:04 +02:00
committed by Marge Bot
parent 1e9f18008f
commit 55e6a68f69
2 changed files with 5 additions and 2 deletions
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2
src/amd/vulkan/radv_pipeline.c
View File

@@ -4299,8 +4299,6 @@ radv_pipeline_generate_raster_state(struct radeon_cmdbuf *ctx_cs,
const VkConservativeRasterizationModeEXT mode = radv_get_conservative_raster_mode(vkraster);
uint32_t pa_sc_conservative_rast = S_028C4C_NULL_SQUAD_AA_MASK_ENABLE(1);
radeon_set_context_reg(ctx_cs, R_028BDC_PA_SC_LINE_CNTL, S_028BDC_DX10_DIAMOND_TEST_ENA(1));
if (pipeline->device->physical_device->rad_info.chip_class >= GFX9) {
/* Conservative rasterization. */
if (mode != VK_CONSERVATIVE_RASTERIZATION_MODE_DISABLED_EXT) {

5
src/amd/vulkan/si_cmd_buffer.c
View File

@@ -549,6 +549,11 @@ si_emit_graphics(struct radv_device *device, struct radeon_cmdbuf *cs)
}
}
/* The DX10 diamond test is unnecessary with Vulkan and it decreases line rasterization
* performance.
*/
radeon_set_context_reg(cs, R_028BDC_PA_SC_LINE_CNTL, 0);
si_emit_compute(device, cs);
}