From 77e9ab342cb081e229e76d1cda761d3bc5372723 Mon Sep 17 00:00:00 2001
From: Triang3l <triang3l@yandex.ru>
Date: Sun, 6 Jan 2019 20:13:23 +0300
Subject: [PATCH] [D3D12] DXBC: Don't update coverage in the depth-only pixel
 shader

---
 src/xenia/gpu/dxbc_shader_translator_om.cc | 32 ++++++++++++----------
 1 file changed, 17 insertions(+), 15 deletions(-)

diff --git a/src/xenia/gpu/dxbc_shader_translator_om.cc b/src/xenia/gpu/dxbc_shader_translator_om.cc
index 13217f86c..67f206379 100644
--- a/src/xenia/gpu/dxbc_shader_translator_om.cc
+++ b/src/xenia/gpu/dxbc_shader_translator_om.cc
@@ -2392,21 +2392,23 @@ void DxbcShaderTranslator::CompletePixelShader_WriteToROV_DepthStencil(
                          ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(1));
   ++stat_.instruction_count;
 
-  // Update the coverage according to the depth/stencil test result (0 or
-  // 0xFFFFFFFF) after writing the new depth/stencil if stencil is enabled.
-  shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_AND) |
-                         ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
-  shader_code_.push_back(
-      EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
-  shader_code_.push_back(coverage_out_temp);
-  shader_code_.push_back(
-      EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
-  shader_code_.push_back(coverage_out_temp);
-  shader_code_.push_back(
-      EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
-  shader_code_.push_back(depth_test_results_temp);
-  ++stat_.instruction_count;
-  ++stat_.uint_instruction_count;
+  if (!is_depth_only_pixel_shader_) {
+    // Update the coverage according to the depth/stencil test result (0 or
+    // 0xFFFFFFFF) after writing the new depth/stencil if stencil is enabled.
+    shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_AND) |
+                           ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
+    shader_code_.push_back(
+        EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
+    shader_code_.push_back(coverage_out_temp);
+    shader_code_.push_back(EncodeVectorSwizzledOperand(
+        D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
+    shader_code_.push_back(coverage_out_temp);
+    shader_code_.push_back(EncodeVectorSwizzledOperand(
+        D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
+    shader_code_.push_back(depth_test_results_temp);
+    ++stat_.instruction_count;
+    ++stat_.uint_instruction_count;
+  }
 
   // Release depth_new_values_temp (if allocated), depth_values_temp,
   // stencil_values_temp and depth_test_results_temp.