[TEST] Line/ conservative rasterization adjustment

src/video_core/renderer_vulkan/fixed_pipeline_state.cpp

@@ -164,7 +164,9 @@ void FixedPipelineState::Refresh(Tegra::Engines::Maxwell3D& maxwell3d, DynamicFe
     }
 
     provoking_vertex_last.Assign(use_last_provoking_vertex ? 1 : 0);
-    conservative_raster_enable.Assign(regs.conservative_raster_enable != 0 ? 1 : 0);
+    if (!features.has_dynamic_state3_conservative_raster_mode) {
+        conservative_raster_enable.Assign(regs.conservative_raster_enable != 0 ? 1 : 0);
+    }
     smooth_lines.Assign(regs.line_anti_alias_enable != 0 ? 1 : 0);
     alpha_to_coverage_enabled.Assign(regs.anti_alias_alpha_control.alpha_to_coverage != 0 ? 1 : 0);
     alpha_to_one_enabled.Assign(regs.anti_alias_alpha_control.alpha_to_one != 0 ? 1 : 0);

src/video_core/renderer_vulkan/fixed_pipeline_state.h

@@ -30,6 +30,7 @@ struct DynamicFeatures {
     bool has_extended_dynamic_state_3_blend;
     bool has_extended_dynamic_state_3_enables;
     bool has_dynamic_state3_depth_clamp_enable;
+    bool has_dynamic_state3_conservative_raster_mode;
     bool has_depth_clip_enable;
     bool has_dynamic_state3_logic_op_enable;
     bool has_dynamic_state3_line_stipple_enable;

src/video_core/renderer_vulkan/vk_graphics_pipeline.cpp

@@ -757,16 +757,13 @@ void GraphicsPipeline::MakePipeline(VkRenderPass render_pass) {
         .lineWidth = 1.0f,
         // TODO(alekpop): Transfer from regs
     };
-    const bool smooth_lines_supported =
-        device.IsExtLineRasterizationSupported() && device.SupportsSmoothLines();
-    const bool stippled_lines_supported =
-        device.IsExtLineRasterizationSupported() && device.SupportsStippledRectangularLines();
+    const VkLineRasterizationModeEXT line_raster_mode =
+        device.GetLineRasterizationMode(key.state.smooth_lines != 0);
+    const bool stippled_lines_supported = device.SupportsStippleForMode(line_raster_mode);
     VkPipelineRasterizationLineStateCreateInfoEXT line_state{
         .sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_LINE_STATE_CREATE_INFO_EXT,
         .pNext = nullptr,
-        .lineRasterizationMode = key.state.smooth_lines != 0 && smooth_lines_supported
-                                     ? VK_LINE_RASTERIZATION_MODE_RECTANGULAR_SMOOTH_EXT
-                                     : VK_LINE_RASTERIZATION_MODE_RECTANGULAR_EXT,
+        .lineRasterizationMode = line_raster_mode,
         .stippledLineEnable =
             (dynamic.line_stipple_enable && stippled_lines_supported) ? VK_TRUE : VK_FALSE,
         .lineStippleFactor = key.state.line_stipple_factor,

src/video_core/renderer_vulkan/vk_pipeline_cache.cpp

@@ -515,6 +515,9 @@ PipelineCache::PipelineCache(Tegra::MaxwellDeviceMemoryManager& device_memory_,
     dynamic_features.has_dynamic_state3_depth_clamp_enable =
         dynamic_features.has_extended_dynamic_state_3_enables &&
         device.SupportsDynamicState3DepthClampEnable();
+    dynamic_features.has_dynamic_state3_conservative_raster_mode =
+        dynamic_features.has_extended_dynamic_state_3_enables &&
+        device.SupportsDynamicState3ConservativeRasterizationMode();
     dynamic_features.has_depth_clip_enable = 
         device.IsExtDepthClipEnableSupported();
     dynamic_features.has_dynamic_state3_logic_op_enable =

src/video_core/renderer_vulkan/vk_rasterizer.cpp

@@ -1470,7 +1470,10 @@ void RasterizerVulkan::UpdateLineWidth(Tegra::Engines::Maxwell3D::Regs& regs) {
     }
     const float width =
         regs.line_anti_alias_enable ? regs.line_width_smooth : regs.line_width_aliased;
-    scheduler.Record([width](vk::CommandBuffer cmdbuf) { cmdbuf.SetLineWidth(width); });
+    const float clamped_width = device.ClampLineWidth(width);
+    scheduler.Record([clamped_width](vk::CommandBuffer cmdbuf) {
+        cmdbuf.SetLineWidth(clamped_width);
+    });
 }
 
 void RasterizerVulkan::UpdateCullMode(Tegra::Engines::Maxwell3D::Regs& regs) {
@@ -1567,7 +1570,10 @@ void RasterizerVulkan::UpdateLineStippleEnable(Tegra::Engines::Maxwell3D::Regs&
         return;
     }
 
-    scheduler.Record([enable = regs.line_stipple_enable](vk::CommandBuffer cmdbuf) {
+    const VkLineRasterizationModeEXT mode =
+        device.GetLineRasterizationMode(regs.line_anti_alias_enable != 0);
+    const bool enable = regs.line_stipple_enable != 0 && device.SupportsStippleForMode(mode);
+    scheduler.Record([enable](vk::CommandBuffer cmdbuf) {
         cmdbuf.SetLineStippleEnableEXT(enable);
     });
 }
@@ -1581,28 +1587,24 @@ void RasterizerVulkan::UpdateLineRasterizationMode(Tegra::Engines::Maxwell3D::Re
     }
 
     if (!device.SupportsDynamicState3LineRasterizationMode()) {
-        static std::once_flag warn_missing_rect;
-        std::call_once(warn_missing_rect, [] {
+        static std::once_flag warn_missing_dynamic_state;
+        std::call_once(warn_missing_dynamic_state, [] {
             LOG_WARNING(Render_Vulkan,
-                        "Driver lacks rectangular line rasterization support; skipping dynamic "
-                        "line state updates");
+                        "Driver lacks dynamic line rasterization mode; the pipeline static value "
+                        "is used instead");
         });
         return;
     }
 
     const bool wants_smooth = regs.line_anti_alias_enable != 0;
-    VkLineRasterizationModeEXT mode = VK_LINE_RASTERIZATION_MODE_RECTANGULAR_EXT;
-    if (wants_smooth) {
-        if (device.SupportsSmoothLines()) {
-            mode = VK_LINE_RASTERIZATION_MODE_RECTANGULAR_SMOOTH_EXT;
-        } else {
-            static std::once_flag warn_missing_smooth;
-            std::call_once(warn_missing_smooth, [] {
-                LOG_WARNING(Render_Vulkan,
-                            "Line anti-aliasing requested but smoothLines feature unavailable; "
-                            "using rectangular rasterization");
-            });
-        }
+    const VkLineRasterizationModeEXT mode = device.GetLineRasterizationMode(wants_smooth);
+    if (wants_smooth && mode != VK_LINE_RASTERIZATION_MODE_RECTANGULAR_SMOOTH_EXT) {
+        static std::once_flag warn_missing_smooth;
+        std::call_once(warn_missing_smooth, [] {
+            LOG_WARNING(Render_Vulkan,
+                        "Line anti-aliasing requested but smoothLines feature unavailable; "
+                        "falling back to the closest supported mode");
+        });
     }
     scheduler.Record([mode](vk::CommandBuffer cmdbuf) {
         cmdbuf.SetLineRasterizationModeEXT(mode);

src/video_core/renderer_vulkan/vk_rasterizer.h

@@ -179,7 +179,6 @@ private:
     void UpdateRasterizerDiscardEnable(Tegra::Engines::Maxwell3D::Regs& regs);
     void UpdateConservativeRasterizationMode(Tegra::Engines::Maxwell3D::Regs& regs);
     void UpdateLineStippleEnable(Tegra::Engines::Maxwell3D::Regs& regs);
-    void UpdateLineStipple(Tegra::Engines::Maxwell3D::Regs& regs);
     void UpdateLineRasterizationMode(Tegra::Engines::Maxwell3D::Regs& regs);
     void UpdateDepthBiasEnable(Tegra::Engines::Maxwell3D::Regs& regs);
     void UpdateLogicOpEnable(Tegra::Engines::Maxwell3D::Regs& regs);

src/video_core/vulkan_common/vulkan_device.h

@@ -756,6 +756,38 @@ FN_MAX_LIMIT_LIST
         return features.line_rasterization.stippledRectangularLines != VK_FALSE;
     }
 
+    VkLineRasterizationModeEXT GetLineRasterizationMode(bool wants_smooth) const {
+        if (wants_smooth && SupportsSmoothLines()) {
+            return VK_LINE_RASTERIZATION_MODE_RECTANGULAR_SMOOTH_EXT;
+        }
+        if (SupportsRectangularLines()) {
+            return VK_LINE_RASTERIZATION_MODE_RECTANGULAR_EXT;
+        }
+        return VK_LINE_RASTERIZATION_MODE_DEFAULT_EXT;
+    }
+
+    bool SupportsStippleForMode(VkLineRasterizationModeEXT mode) const {
+        switch (mode) {
+        case VK_LINE_RASTERIZATION_MODE_RECTANGULAR_SMOOTH_EXT:
+            return features.line_rasterization.stippledSmoothLines != VK_FALSE;
+        case VK_LINE_RASTERIZATION_MODE_BRESENHAM_EXT:
+            return features.line_rasterization.stippledBresenhamLines != VK_FALSE;
+        default:
+            return features.line_rasterization.stippledRectangularLines != VK_FALSE;
+        }
+    }
+
+    float ClampLineWidth(float width) const {
+        if (!features.features.wideLines) {
+            return 1.0f;
+        }
+        const auto& range = properties.properties.limits.lineWidthRange;
+        if (!(width >= range[0])) {
+            return range[0];
+        }
+        return width > range[1] ? range[1] : width;
+    }
+
     bool SupportsAlphaToOne() const {
         return features.features.alphaToOne != VK_FALSE;
     }