mirror of https://github.com/stenzek/duckstation
PostProcessing: Add ReShade .fx shader support
Stenzek
2 years ago
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// SPDX-FileCopyrightText: 2019-2023 Connor McLaughlin <stenzek@gmail.com>
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// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
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#pragma once
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#include "postprocessing_shader.h"
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#include "common/timer.h"
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// reshadefx
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#include "effect_module.hpp"
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class Error;
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namespace PostProcessing {
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class ReShadeFXShader final : public Shader
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{
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public:
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ReShadeFXShader();
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~ReShadeFXShader();
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bool IsValid() const override;
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bool LoadFromFile(std::string name, const char* filename, bool only_config, Error* error);
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bool ResizeOutput(GPUTexture::Format format, u32 width, u32 height) override;
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bool CompilePipeline(GPUTexture::Format format, u32 width, u32 height) override;
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bool Apply(GPUTexture* input, GPUFramebuffer* final_target, s32 final_left, s32 final_top, s32 final_width,
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s32 final_height, s32 orig_width, s32 orig_height, u32 target_width, u32 target_height) override;
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private:
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using TextureID = s32;
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static constexpr TextureID INPUT_COLOR_TEXTURE = -1;
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static constexpr TextureID INPUT_DEPTH_TEXTURE = -2;
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static constexpr TextureID OUTPUT_COLOR_TEXTURE = -3;
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enum class SourceOptionType
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{
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None,
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Zero,
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Timer,
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FrameTime,
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FrameCount,
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FrameCountF,
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PingPong,
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MousePoint,
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BufferWidth,
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BufferHeight,
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BufferWidthF,
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BufferHeightF,
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InternalWidth,
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InternalHeight,
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InternalWidthF,
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InternalHeightF,
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MaxCount
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};
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struct SourceOption
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{
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SourceOptionType source;
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u32 offset;
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float min;
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float max;
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float smoothing;
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std::array<float, 2> step;
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ShaderOption::ValueVector value;
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};
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bool CreateModule(s32 buffer_width, s32 buffer_height, reshadefx::module* mod, Error* error);
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bool CreateOptions(const reshadefx::module& mod, Error* error);
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bool GetSourceOption(const reshadefx::uniform_info& ui, SourceOptionType* si, Error* error);
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bool CreatePasses(GPUTexture::Format backbuffer_format, reshadefx::module& mod, Error* error);
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const char* GetTextureNameForID(TextureID id) const;
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GPUTexture* GetTextureByID(TextureID id, GPUTexture* input, GPUFramebuffer* final_target) const;
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GPUFramebuffer* GetFramebufferByID(TextureID id, GPUTexture* input, GPUFramebuffer* final_target) const;
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std::string m_filename;
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struct Texture
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{
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std::unique_ptr<GPUTexture> texture;
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std::unique_ptr<GPUFramebuffer> framebuffer;
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std::string reshade_name; // TODO: we might be able to drop this
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GPUTexture::Format format;
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float rt_scale;
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};
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struct Sampler
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{
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u32 slot;
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TextureID texture_id;
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std::string reshade_name;
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GPUSampler* sampler;
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};
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struct Pass
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{
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std::unique_ptr<GPUPipeline> pipeline;
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TextureID render_target;
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std::vector<Sampler> samplers;
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u32 num_vertices;
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#ifdef _DEBUG
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std::string name;
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#endif
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};
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std::vector<Pass> m_passes;
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std::vector<Texture> m_textures;
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std::vector<SourceOption> m_source_options;
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u32 m_uniforms_size = 0;
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bool m_valid = false;
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Common::Timer m_frame_timer;
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u32 m_frame_count = 0;
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};
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} // namespace PostProcessing
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