vk_graphics_pipeline: Implement conservative rendering

3 files changed, 26 insertions, 9 deletions

diff --git a/src/video_core/renderer_vulkan/fixed_pipeline_state.cpp b/src/video_core/renderer_vulkan/fixed_pipeline_state.cpp
index 16cef8711..7563dc462 100644
--- a/src/video_core/renderer_vulkan/fixed_pipeline_state.cpp
+++ b/src/video_core/renderer_vulkan/fixed_pipeline_state.cpp
@@ -87,6 +87,7 @@ void FixedPipelineState::Refresh(Tegra::Engines::Maxwell3D& maxwell3d,
     depth_format.Assign(static_cast<u32>(regs.zeta.format));
     y_negate.Assign(regs.screen_y_control.y_negate != 0 ? 1 : 0);
     provoking_vertex_last.Assign(regs.provoking_vertex_last != 0 ? 1 : 0);
+    conservative_raster_enable.Assign(regs.conservative_raster_enable != 0 ? 1 : 0);
 
     for (size_t i = 0; i < regs.rt.size(); ++i) {
         color_formats[i] = static_cast<u8>(regs.rt[i].format);
diff --git a/src/video_core/renderer_vulkan/fixed_pipeline_state.h b/src/video_core/renderer_vulkan/fixed_pipeline_state.h
index 04f34eb97..66b57b636 100644
--- a/src/video_core/renderer_vulkan/fixed_pipeline_state.h
+++ b/src/video_core/renderer_vulkan/fixed_pipeline_state.h
@@ -194,6 +194,7 @@ struct FixedPipelineState {
         BitField<6, 5, u32> depth_format;
         BitField<11, 1, u32> y_negate;
         BitField<12, 1, u32> provoking_vertex_last;
+        BitField<13, 1, u32> conservative_raster_enable;
     };
     std::array<u8, Maxwell::NumRenderTargets> color_formats;
 
diff --git a/src/video_core/renderer_vulkan/vk_graphics_pipeline.cpp b/src/video_core/renderer_vulkan/vk_graphics_pipeline.cpp
index 9eb353a88..70e183e65 100644
--- a/src/video_core/renderer_vulkan/vk_graphics_pipeline.cpp
+++ b/src/video_core/renderer_vulkan/vk_graphics_pipeline.cpp
@@ -599,16 +599,9 @@ void GraphicsPipeline::MakePipeline(VkRenderPass render_pass) {
         .pScissors = nullptr,
     };
 
-    const VkPipelineRasterizationProvokingVertexStateCreateInfoEXT provoking_vertex{
-        .sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_PROVOKING_VERTEX_STATE_CREATE_INFO_EXT,
-        .pNext = nullptr,
-        .provokingVertexMode = key.state.provoking_vertex_last != 0
-                                   ? VK_PROVOKING_VERTEX_MODE_LAST_VERTEX_EXT
-                                   : VK_PROVOKING_VERTEX_MODE_FIRST_VERTEX_EXT,
-    };
-    const VkPipelineRasterizationStateCreateInfo rasterization_ci{
+    VkPipelineRasterizationStateCreateInfo rasterization_ci{
         .sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO,
-        .pNext = device.IsExtProvokingVertexSupported() ? &provoking_vertex : nullptr,
+        .pNext = nullptr,
         .flags = 0,
         .depthClampEnable =
             static_cast<VkBool32>(key.state.depth_clamp_disabled == 0 ? VK_TRUE : VK_FALSE),
@@ -625,6 +618,28 @@ void GraphicsPipeline::MakePipeline(VkRenderPass render_pass) {
         .depthBiasSlopeFactor = 0.0f,
         .lineWidth = 1.0f,
     };
+    VkPipelineRasterizationConservativeStateCreateInfoEXT conservative_raster{
+        .sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_CONSERVATIVE_STATE_CREATE_INFO_EXT,
+        .pNext = nullptr,
+        .flags = 0,
+        .conservativeRasterizationMode = key.state.conservative_raster_enable != 0
+                                             ? VK_CONSERVATIVE_RASTERIZATION_MODE_OVERESTIMATE_EXT
+                                             : VK_CONSERVATIVE_RASTERIZATION_MODE_DISABLED_EXT,
+        .extraPrimitiveOverestimationSize = 0.0f,
+    };
+    VkPipelineRasterizationProvokingVertexStateCreateInfoEXT provoking_vertex{
+        .sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_PROVOKING_VERTEX_STATE_CREATE_INFO_EXT,
+        .pNext = nullptr,
+        .provokingVertexMode = key.state.provoking_vertex_last != 0
+                                   ? VK_PROVOKING_VERTEX_MODE_LAST_VERTEX_EXT
+                                   : VK_PROVOKING_VERTEX_MODE_FIRST_VERTEX_EXT,
+    };
+    if (device.IsExtConservativeRasterizationSupported()) {
+        conservative_raster.pNext = std::exchange(rasterization_ci.pNext, &conservative_raster);
+    }
+    if (device.IsExtProvokingVertexSupported()) {
+        provoking_vertex.pNext = std::exchange(rasterization_ci.pNext, &provoking_vertex);
+    }
 
     const VkPipelineMultisampleStateCreateInfo multisample_ci{
         .sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO,