6 files changed, 152 insertions, 20 deletions

diff --git a/src/video_core/host_shaders/CMakeLists.txt b/src/video_core/host_shaders/CMakeLists.txt
index dad7b07d4..52cd5bb81 100644
--- a/src/video_core/host_shaders/CMakeLists.txt
+++ b/src/video_core/host_shaders/CMakeLists.txt
@@ -45,6 +45,8 @@ set(SHADER_FILES
     smaa_neighborhood_blending.vert
     smaa_neighborhood_blending.frag
     vulkan_blit_depth_stencil.frag
+    vulkan_color_clear.frag
+    vulkan_color_clear.vert
     vulkan_fidelityfx_fsr_easu_fp16.comp
     vulkan_fidelityfx_fsr_easu_fp32.comp
     vulkan_fidelityfx_fsr_rcas_fp16.comp
diff --git a/src/video_core/host_shaders/vulkan_color_clear.frag b/src/video_core/host_shaders/vulkan_color_clear.frag
new file mode 100644
index 000000000..617bf01e1
--- /dev/null
+++ b/src/video_core/host_shaders/vulkan_color_clear.frag
@@ -0,0 +1,14 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#version 460 core
+
+layout (push_constant) uniform PushConstants {
+    vec4 clear_color;
+};
+
+layout(location = 0) out vec4 color;
+
+void main() {
+    color = clear_color;
+}
diff --git a/src/video_core/host_shaders/vulkan_color_clear.vert b/src/video_core/host_shaders/vulkan_color_clear.vert
new file mode 100644
index 000000000..d85883141
--- /dev/null
+++ b/src/video_core/host_shaders/vulkan_color_clear.vert
@@ -0,0 +1,10 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#version 460 core
+
+void main() {
+    float x = float((gl_VertexIndex & 1) << 2);
+    float y = float((gl_VertexIndex & 2) << 1);
+    gl_Position = vec4(x - 1.0, y - 1.0, 0.0, 1.0);
+}
diff --git a/src/video_core/renderer_vulkan/blit_image.cpp b/src/video_core/renderer_vulkan/blit_image.cpp
index dd00d3edf..cf2964a3f 100644
--- a/src/video_core/renderer_vulkan/blit_image.cpp
+++ b/src/video_core/renderer_vulkan/blit_image.cpp
@@ -12,6 +12,8 @@
 #include "video_core/host_shaders/convert_s8d24_to_abgr8_frag_spv.h"
 #include "video_core/host_shaders/full_screen_triangle_vert_spv.h"
 #include "video_core/host_shaders/vulkan_blit_depth_stencil_frag_spv.h"
+#include "video_core/host_shaders/vulkan_color_clear_frag_spv.h"
+#include "video_core/host_shaders/vulkan_color_clear_vert_spv.h"
 #include "video_core/renderer_vulkan/blit_image.h"
 #include "video_core/renderer_vulkan/maxwell_to_vk.h"
 #include "video_core/renderer_vulkan/vk_scheduler.h"
@@ -69,10 +71,11 @@ constexpr VkDescriptorSetLayoutCreateInfo TWO_TEXTURES_DESCRIPTOR_SET_LAYOUT_CRE
     .bindingCount = static_cast<u32>(TWO_TEXTURES_DESCRIPTOR_SET_LAYOUT_BINDINGS.size()),
     .pBindings = TWO_TEXTURES_DESCRIPTOR_SET_LAYOUT_BINDINGS.data(),
 };
-constexpr VkPushConstantRange PUSH_CONSTANT_RANGE{
-    .stageFlags = VK_SHADER_STAGE_VERTEX_BIT,
+template <VkShaderStageFlags stageFlags, size_t size>
+inline constexpr VkPushConstantRange PUSH_CONSTANT_RANGE{
+    .stageFlags = stageFlags,
     .offset = 0,
-    .size = sizeof(PushConstants),
+    .size = static_cast<u32>(size),
 };
 constexpr VkPipelineVertexInputStateCreateInfo PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO{
     .sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
@@ -125,10 +128,8 @@ constexpr VkPipelineMultisampleStateCreateInfo PIPELINE_MULTISAMPLE_STATE_CREATE
     .alphaToCoverageEnable = VK_FALSE,
     .alphaToOneEnable = VK_FALSE,
 };
-constexpr std::array DYNAMIC_STATES{
-    VK_DYNAMIC_STATE_VIEWPORT,
-    VK_DYNAMIC_STATE_SCISSOR,
-};
+constexpr std::array DYNAMIC_STATES{VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR,
+                                    VK_DYNAMIC_STATE_BLEND_CONSTANTS};
 constexpr VkPipelineDynamicStateCreateInfo PIPELINE_DYNAMIC_STATE_CREATE_INFO{
     .sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO,
     .pNext = nullptr,
@@ -205,15 +206,15 @@ inline constexpr VkSamplerCreateInfo SAMPLER_CREATE_INFO{
 };
 
 constexpr VkPipelineLayoutCreateInfo PipelineLayoutCreateInfo(
-    const VkDescriptorSetLayout* set_layout) {
+    const VkDescriptorSetLayout* set_layout, vk::Span<VkPushConstantRange> push_constants) {
     return VkPipelineLayoutCreateInfo{
         .sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,
         .pNext = nullptr,
         .flags = 0,
-        .setLayoutCount = 1,
+        .setLayoutCount = (set_layout != nullptr ? 1u : 0u),
         .pSetLayouts = set_layout,
-        .pushConstantRangeCount = 1,
-        .pPushConstantRanges = &PUSH_CONSTANT_RANGE,
+        .pushConstantRangeCount = push_constants.size(),
+        .pPushConstantRanges = push_constants.data(),
     };
 }
 
@@ -302,8 +303,7 @@ void UpdateTwoTexturesDescriptorSet(const Device& device, VkDescriptorSet descri
     device.GetLogical().UpdateDescriptorSets(write_descriptor_sets, nullptr);
 }
 
-void BindBlitState(vk::CommandBuffer cmdbuf, VkPipelineLayout layout, const Region2D& dst_region,
-                   const Region2D& src_region, const Extent3D& src_size = {1, 1, 1}) {
+void BindBlitState(vk::CommandBuffer cmdbuf, const Region2D& dst_region) {
     const VkOffset2D offset{
         .x = std::min(dst_region.start.x, dst_region.end.x),
         .y = std::min(dst_region.start.y, dst_region.end.y),
@@ -325,6 +325,13 @@ void BindBlitState(vk::CommandBuffer cmdbuf, VkPipelineLayout layout, const Regi
         .offset = offset,
         .extent = extent,
     };
+    cmdbuf.SetViewport(0, viewport);
+    cmdbuf.SetScissor(0, scissor);
+}
+
+void BindBlitState(vk::CommandBuffer cmdbuf, VkPipelineLayout layout, const Region2D& dst_region,
+                   const Region2D& src_region, const Extent3D& src_size = {1, 1, 1}) {
+    BindBlitState(cmdbuf, dst_region);
     const float scale_x = static_cast<float>(src_region.end.x - src_region.start.x) /
                           static_cast<float>(src_size.width);
     const float scale_y = static_cast<float>(src_region.end.y - src_region.start.y) /
@@ -335,8 +342,6 @@ void BindBlitState(vk::CommandBuffer cmdbuf, VkPipelineLayout layout, const Regi
                        static_cast<float>(src_region.start.y) /
                            static_cast<float>(src_size.height)},
     };
-    cmdbuf.SetViewport(0, viewport);
-    cmdbuf.SetScissor(0, scissor);
     cmdbuf.PushConstants(layout, VK_SHADER_STAGE_VERTEX_BIT, push_constants);
 }
 
@@ -408,13 +413,20 @@ BlitImageHelper::BlitImageHelper(const Device& device_, Scheduler& scheduler_,
           descriptor_pool.Allocator(*one_texture_set_layout, TEXTURE_DESCRIPTOR_BANK_INFO<1>)},
       two_textures_descriptor_allocator{
           descriptor_pool.Allocator(*two_textures_set_layout, TEXTURE_DESCRIPTOR_BANK_INFO<2>)},
-      one_texture_pipeline_layout(device.GetLogical().CreatePipelineLayout(
-          PipelineLayoutCreateInfo(one_texture_set_layout.address()))),
-      two_textures_pipeline_layout(device.GetLogical().CreatePipelineLayout(
-          PipelineLayoutCreateInfo(two_textures_set_layout.address()))),
+      one_texture_pipeline_layout(device.GetLogical().CreatePipelineLayout(PipelineLayoutCreateInfo(
+          one_texture_set_layout.address(),
+          PUSH_CONSTANT_RANGE<VK_SHADER_STAGE_VERTEX_BIT, sizeof(PushConstants)>))),
+      two_textures_pipeline_layout(
+          device.GetLogical().CreatePipelineLayout(PipelineLayoutCreateInfo(
+              two_textures_set_layout.address(),
+              PUSH_CONSTANT_RANGE<VK_SHADER_STAGE_VERTEX_BIT, sizeof(PushConstants)>))),
+      clear_color_pipeline_layout(device.GetLogical().CreatePipelineLayout(PipelineLayoutCreateInfo(
+          nullptr, PUSH_CONSTANT_RANGE<VK_SHADER_STAGE_FRAGMENT_BIT, sizeof(float) * 4>))),
       full_screen_vert(BuildShader(device, FULL_SCREEN_TRIANGLE_VERT_SPV)),
       blit_color_to_color_frag(BuildShader(device, BLIT_COLOR_FLOAT_FRAG_SPV)),
       blit_depth_stencil_frag(BuildShader(device, VULKAN_BLIT_DEPTH_STENCIL_FRAG_SPV)),
+      clear_color_vert(BuildShader(device, VULKAN_COLOR_CLEAR_VERT_SPV)),
+      clear_color_frag(BuildShader(device, VULKAN_COLOR_CLEAR_FRAG_SPV)),
       convert_depth_to_float_frag(BuildShader(device, CONVERT_DEPTH_TO_FLOAT_FRAG_SPV)),
       convert_float_to_depth_frag(BuildShader(device, CONVERT_FLOAT_TO_DEPTH_FRAG_SPV)),
       convert_abgr8_to_d24s8_frag(BuildShader(device, CONVERT_ABGR8_TO_D24S8_FRAG_SPV)),
@@ -553,6 +565,30 @@ void BlitImageHelper::ConvertS8D24ToABGR8(const Framebuffer* dst_framebuffer,
     ConvertDepthStencil(*convert_s8d24_to_abgr8_pipeline, dst_framebuffer, src_image_view);
 }
 
+void BlitImageHelper::ClearColor(const Framebuffer* dst_framebuffer, u8 color_mask,
+                                 const std::array<f32, 4>& clear_color,
+                                 const Region2D& dst_region) {
+    const BlitImagePipelineKey key{
+        .renderpass = dst_framebuffer->RenderPass(),
+        .operation = Tegra::Engines::Fermi2D::Operation::BlendPremult,
+    };
+    const VkPipeline pipeline = FindOrEmplaceClearColorPipeline(key);
+    const VkPipelineLayout layout = *clear_color_pipeline_layout;
+    scheduler.RequestRenderpass(dst_framebuffer);
+    scheduler.Record(
+        [pipeline, layout, color_mask, clear_color, dst_region](vk::CommandBuffer cmdbuf) {
+            cmdbuf.BindPipeline(VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
+            const std::array blend_color = {
+                (color_mask & 0x1) ? 1.0f : 0.0f, (color_mask & 0x2) ? 1.0f : 0.0f,
+                (color_mask & 0x4) ? 1.0f : 0.0f, (color_mask & 0x8) ? 1.0f : 0.0f};
+            cmdbuf.SetBlendConstants(blend_color.data());
+            BindBlitState(cmdbuf, dst_region);
+            cmdbuf.PushConstants(layout, VK_SHADER_STAGE_FRAGMENT_BIT, clear_color);
+            cmdbuf.Draw(3, 1, 0, 0);
+        });
+    scheduler.InvalidateState();
+}
+
 void BlitImageHelper::Convert(VkPipeline pipeline, const Framebuffer* dst_framebuffer,
                               const ImageView& src_image_view) {
     const VkPipelineLayout layout = *one_texture_pipeline_layout;
@@ -728,6 +764,58 @@ VkPipeline BlitImageHelper::FindOrEmplaceDepthStencilPipeline(const BlitImagePip
     return *blit_depth_stencil_pipelines.back();
 }
 
+VkPipeline BlitImageHelper::FindOrEmplaceClearColorPipeline(const BlitImagePipelineKey& key) {
+    const auto it = std::ranges::find(clear_color_keys, key);
+    if (it != clear_color_keys.end()) {
+        return *clear_color_pipelines[std::distance(clear_color_keys.begin(), it)];
+    }
+    clear_color_keys.push_back(key);
+    const std::array stages = MakeStages(*clear_color_vert, *clear_color_frag);
+    const VkPipelineColorBlendAttachmentState color_blend_attachment_state{
+        .blendEnable = VK_TRUE,
+        .srcColorBlendFactor = VK_BLEND_FACTOR_CONSTANT_COLOR,
+        .dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_CONSTANT_COLOR,
+        .colorBlendOp = VK_BLEND_OP_ADD,
+        .srcAlphaBlendFactor = VK_BLEND_FACTOR_CONSTANT_ALPHA,
+        .dstAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_CONSTANT_ALPHA,
+        .alphaBlendOp = VK_BLEND_OP_ADD,
+        .colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT |
+                          VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT,
+    };
+    const VkPipelineColorBlendStateCreateInfo color_blend_state_generic_create_info{
+        .sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO,
+        .pNext = nullptr,
+        .flags = 0,
+        .logicOpEnable = VK_FALSE,
+        .logicOp = VK_LOGIC_OP_CLEAR,
+        .attachmentCount = 1,
+        .pAttachments = &color_blend_attachment_state,
+        .blendConstants = {0.0f, 0.0f, 0.0f, 0.0f},
+    };
+    clear_color_pipelines.push_back(device.GetLogical().CreateGraphicsPipeline({
+        .sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO,
+        .pNext = nullptr,
+        .flags = 0,
+        .stageCount = static_cast<u32>(stages.size()),
+        .pStages = stages.data(),
+        .pVertexInputState = &PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
+        .pInputAssemblyState = &PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO,
+        .pTessellationState = nullptr,
+        .pViewportState = &PIPELINE_VIEWPORT_STATE_CREATE_INFO,
+        .pRasterizationState = &PIPELINE_RASTERIZATION_STATE_CREATE_INFO,
+        .pMultisampleState = &PIPELINE_MULTISAMPLE_STATE_CREATE_INFO,
+        .pDepthStencilState = &PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO,
+        .pColorBlendState = &color_blend_state_generic_create_info,
+        .pDynamicState = &PIPELINE_DYNAMIC_STATE_CREATE_INFO,
+        .layout = *clear_color_pipeline_layout,
+        .renderPass = key.renderpass,
+        .subpass = 0,
+        .basePipelineHandle = VK_NULL_HANDLE,
+        .basePipelineIndex = 0,
+    }));
+    return *clear_color_pipelines.back();
+}
+
 void BlitImageHelper::ConvertPipeline(vk::Pipeline& pipeline, VkRenderPass renderpass,
                                       bool is_target_depth) {
     if (pipeline) {
diff --git a/src/video_core/renderer_vulkan/blit_image.h b/src/video_core/renderer_vulkan/blit_image.h
index be8a9a2f6..2976a7d91 100644
--- a/src/video_core/renderer_vulkan/blit_image.h
+++ b/src/video_core/renderer_vulkan/blit_image.h
@@ -61,6 +61,9 @@ public:
 
     void ConvertS8D24ToABGR8(const Framebuffer* dst_framebuffer, ImageView& src_image_view);
 
+    void ClearColor(const Framebuffer* dst_framebuffer, u8 color_mask,
+                    const std::array<f32, 4>& clear_color, const Region2D& dst_region);
+
 private:
     void Convert(VkPipeline pipeline, const Framebuffer* dst_framebuffer,
                  const ImageView& src_image_view);
@@ -72,6 +75,8 @@ private:
 
     [[nodiscard]] VkPipeline FindOrEmplaceDepthStencilPipeline(const BlitImagePipelineKey& key);
 
+    [[nodiscard]] VkPipeline FindOrEmplaceClearColorPipeline(const BlitImagePipelineKey& key);
+
     void ConvertPipeline(vk::Pipeline& pipeline, VkRenderPass renderpass, bool is_target_depth);
 
     void ConvertDepthToColorPipeline(vk::Pipeline& pipeline, VkRenderPass renderpass);
@@ -97,9 +102,12 @@ private:
     DescriptorAllocator two_textures_descriptor_allocator;
     vk::PipelineLayout one_texture_pipeline_layout;
     vk::PipelineLayout two_textures_pipeline_layout;
+    vk::PipelineLayout clear_color_pipeline_layout;
     vk::ShaderModule full_screen_vert;
     vk::ShaderModule blit_color_to_color_frag;
     vk::ShaderModule blit_depth_stencil_frag;
+    vk::ShaderModule clear_color_vert;
+    vk::ShaderModule clear_color_frag;
     vk::ShaderModule convert_depth_to_float_frag;
     vk::ShaderModule convert_float_to_depth_frag;
     vk::ShaderModule convert_abgr8_to_d24s8_frag;
@@ -112,6 +120,8 @@ private:
     std::vector<vk::Pipeline> blit_color_pipelines;
     std::vector<BlitImagePipelineKey> blit_depth_stencil_keys;
     std::vector<vk::Pipeline> blit_depth_stencil_pipelines;
+    std::vector<BlitImagePipelineKey> clear_color_keys;
+    std::vector<vk::Pipeline> clear_color_pipelines;
     vk::Pipeline convert_d32_to_r32_pipeline;
     vk::Pipeline convert_r32_to_d32_pipeline;
     vk::Pipeline convert_d16_to_r16_pipeline;
diff --git a/src/video_core/renderer_vulkan/vk_rasterizer.cpp b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
index 86ef0daeb..719edbcfb 100644
--- a/src/video_core/renderer_vulkan/vk_rasterizer.cpp
+++ b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
@@ -394,7 +394,15 @@ void RasterizerVulkan::Clear(u32 layer_count) {
                 cmdbuf.ClearAttachments(attachment, clear_rect);
             });
         } else {
-            UNIMPLEMENTED_MSG("Unimplemented Clear only the specified channel");
+            u8 color_mask = static_cast<u8>(regs.clear_surface.R | regs.clear_surface.G << 1 |
+                                            regs.clear_surface.B << 2 | regs.clear_surface.A << 3);
+            Region2D dst_region = {
+                Offset2D{.x = clear_rect.rect.offset.x, .y = clear_rect.rect.offset.y},
+                Offset2D{.x = clear_rect.rect.offset.x +
+                              static_cast<s32>(clear_rect.rect.extent.width),
+                         .y = clear_rect.rect.offset.y +
+                              static_cast<s32>(clear_rect.rect.extent.height)}};
+            blit_image.ClearColor(framebuffer, color_mask, regs.clear_color, dst_region);
         }
     }