[Mesa-dev] [PATCH] radv: optimize path when depth clamp is disabled

[Samuel Pitoiset]

Ported from AMVDVLK.

Signed-off-by: Samuel Pitoiset <samuel.pitoi...@gmail.com>
---
 src/amd/vulkan/radv_pipeline.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/amd/vulkan/radv_pipeline.c b/src/amd/vulkan/radv_pipeline.c
index 89c5e69941..638c3074ec 100644
--- a/src/amd/vulkan/radv_pipeline.c
+++ b/src/amd/vulkan/radv_pipeline.c
@@ -2198,9 +2198,11 @@ radv_pipeline_generate_depth_stencil_state(struct 
radeon_winsys_cs *cs,
        const VkPipelineDepthStencilStateCreateInfo *vkds = 
pCreateInfo->pDepthStencilState;
        RADV_FROM_HANDLE(radv_render_pass, pass, pCreateInfo->renderPass);
        struct radv_subpass *subpass = pass->subpasses + pCreateInfo->subpass;
+       struct radv_shader_variant *ps = 
pipeline->shaders[MESA_SHADER_FRAGMENT];
        struct radv_render_pass_attachment *attachment = NULL;
        uint32_t db_depth_control = 0, db_stencil_control = 0;
        uint32_t db_render_control = 0, db_render_override2 = 0;
+       uint32_t db_render_override = 0;
 
        if (subpass->depth_stencil_attachment.attachment != 
VK_ATTACHMENT_UNUSED)
                attachment = pass->attachments + 
subpass->depth_stencil_attachment.attachment;
@@ -2242,10 +2244,22 @@ radv_pipeline_generate_depth_stencil_state(struct 
radeon_winsys_cs *cs,
                db_render_override2 |= 
S_028010_DISABLE_SMEM_EXPCLEAR_OPTIMIZATION(extra->db_stencil_disable_expclear);
        }
 
+       db_render_override |= 
S_02800C_FORCE_HIS_ENABLE0(V_02800C_FORCE_DISABLE) |
+                             
S_02800C_FORCE_HIS_ENABLE1(V_02800C_FORCE_DISABLE);
+
+       if (!pCreateInfo->pRasterizationState->depthClampEnable &&
+           ps->info.info.ps.writes_z) {
+               /* Optimized path when depth clamp is disabled, ported from
+                * AMDVLK.
+                */
+               db_render_override |= S_02800C_DISABLE_VIEWPORT_CLAMP(1);
+       }
+
        radeon_set_context_reg(cs, R_028800_DB_DEPTH_CONTROL, db_depth_control);
        radeon_set_context_reg(cs, R_02842C_DB_STENCIL_CONTROL, 
db_stencil_control);
 
        radeon_set_context_reg(cs, R_028000_DB_RENDER_CONTROL, 
db_render_control);
+       radeon_set_context_reg(cs, R_02800C_DB_RENDER_OVERRIDE, 
db_render_override);
        radeon_set_context_reg(cs, R_028010_DB_RENDER_OVERRIDE2, 
db_render_override2);
 }
 
-- 
2.16.2

_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/mesa-dev