From 2effdeb9243b5ca80a696b9bc003fb0179e0b6bd Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Mon, 6 Jan 2020 21:29:13 -0300
Subject: vk_graphics_pipeline: Initial implementation

This abstractio represents the state of the 3D engine at a given draw.
Instead of changing individual bits of the pipeline how it's done in
APIs like D3D11, OpenGL and NVN; on Vulkan we are forced to put
everything together into a single, immutable object.

It takes advantage of the few dynamic states Vulkan offers.
---
 .../renderer_vulkan/vk_graphics_pipeline.h         | 90 ++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 src/video_core/renderer_vulkan/vk_graphics_pipeline.h

(limited to 'src/video_core/renderer_vulkan/vk_graphics_pipeline.h')

diff --git a/src/video_core/renderer_vulkan/vk_graphics_pipeline.h b/src/video_core/renderer_vulkan/vk_graphics_pipeline.h
new file mode 100644
index 000000000..4f5e4ea2d
--- /dev/null
+++ b/src/video_core/renderer_vulkan/vk_graphics_pipeline.h
@@ -0,0 +1,90 @@
+// Copyright 2019 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <memory>
+#include <optional>
+#include <unordered_map>
+#include <vector>
+
+#include "video_core/engines/maxwell_3d.h"
+#include "video_core/renderer_vulkan/declarations.h"
+#include "video_core/renderer_vulkan/fixed_pipeline_state.h"
+#include "video_core/renderer_vulkan/vk_descriptor_pool.h"
+#include "video_core/renderer_vulkan/vk_renderpass_cache.h"
+#include "video_core/renderer_vulkan/vk_resource_manager.h"
+#include "video_core/renderer_vulkan/vk_shader_decompiler.h"
+
+namespace Vulkan {
+
+using Maxwell = Tegra::Engines::Maxwell3D::Regs;
+
+struct GraphicsPipelineCacheKey;
+
+class VKDescriptorPool;
+class VKDevice;
+class VKRenderPassCache;
+class VKScheduler;
+class VKUpdateDescriptorQueue;
+
+using SPIRVProgram = std::array<std::optional<SPIRVShader>, Maxwell::MaxShaderStage>;
+
+class VKGraphicsPipeline final {
+public:
+    explicit VKGraphicsPipeline(const VKDevice& device, VKScheduler& scheduler,
+                                VKDescriptorPool& descriptor_pool,
+                                VKUpdateDescriptorQueue& update_descriptor_queue,
+                                VKRenderPassCache& renderpass_cache,
+                                const GraphicsPipelineCacheKey& key,
+                                const std::vector<vk::DescriptorSetLayoutBinding>& bindings,
+                                const SPIRVProgram& program);
+    ~VKGraphicsPipeline();
+
+    vk::DescriptorSet CommitDescriptorSet();
+
+    vk::Pipeline GetHandle() const {
+        return *pipeline;
+    }
+
+    vk::PipelineLayout GetLayout() const {
+        return *layout;
+    }
+
+    vk::RenderPass GetRenderPass() const {
+        return renderpass;
+    }
+
+private:
+    UniqueDescriptorSetLayout CreateDescriptorSetLayout(
+        const std::vector<vk::DescriptorSetLayoutBinding>& bindings) const;
+
+    UniquePipelineLayout CreatePipelineLayout() const;
+
+    UniqueDescriptorUpdateTemplate CreateDescriptorUpdateTemplate(
+        const SPIRVProgram& program) const;
+
+    std::vector<UniqueShaderModule> CreateShaderModules(const SPIRVProgram& program) const;
+
+    UniquePipeline CreatePipeline(const RenderPassParams& renderpass_params,
+                                  const SPIRVProgram& program) const;
+
+    const VKDevice& device;
+    VKScheduler& scheduler;
+    const FixedPipelineState fixed_state;
+    const u64 hash;
+
+    UniqueDescriptorSetLayout descriptor_set_layout;
+    DescriptorAllocator descriptor_allocator;
+    VKUpdateDescriptorQueue& update_descriptor_queue;
+    UniquePipelineLayout layout;
+    UniqueDescriptorUpdateTemplate descriptor_template;
+    std::vector<UniqueShaderModule> modules;
+
+    vk::RenderPass renderpass;
+    UniquePipeline pipeline;
+};
+
+} // namespace Vulkan
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