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80 lines
3.9 KiB
C++
80 lines
3.9 KiB
C++
// SPDX-FileCopyrightText: 2019-2024 Connor McLaughlin <stenzek@gmail.com>
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// SPDX-License-Identifier: CC-BY-NC-ND-4.0
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#pragma once
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#include "gpu_device.h"
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#include "common/small_string.h"
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#include <sstream>
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#include <string>
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class ShaderGen
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{
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public:
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ShaderGen(RenderAPI render_api, GPUShaderLanguage language, bool supports_dual_source_blend,
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bool supports_framebuffer_fetch);
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~ShaderGen();
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static GPUShaderLanguage GetShaderLanguageForAPI(RenderAPI api);
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static bool UseGLSLBindingLayout();
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static u32 GetGLSLVersion(RenderAPI render_api);
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static TinyString GetGLSLVersionString(RenderAPI render_api, u32 version);
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ALWAYS_INLINE GPUShaderLanguage GetLanguage() const { return m_shader_language; }
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ALWAYS_INLINE bool IsVulkan() const { return (m_render_api == RenderAPI::Vulkan); }
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ALWAYS_INLINE bool IsMetal() const { return (m_render_api == RenderAPI::Metal); }
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std::string GenerateScreenQuadVertexShader(float z = 0.0f) const;
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std::string GenerateUVQuadVertexShader() const;
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std::string GenerateFillFragmentShader() const;
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std::string GenerateFillFragmentShader(const GSVector4 fixed_color) const;
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std::string GenerateCopyFragmentShader(bool offset = true) const;
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std::string GenerateImGuiVertexShader() const;
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std::string GenerateImGuiFragmentShader() const;
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const char* GetInterpolationQualifier(bool interface_block, bool centroid_interpolation, bool sample_interpolation,
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bool is_out) const;
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void DefineMacro(std::stringstream& ss, const char* name, bool enabled) const;
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void DefineMacro(std::stringstream& ss, const char* name, s32 value) const;
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void WriteHeader(std::stringstream& ss, bool enable_rov = false, bool enable_framebuffer_fetch = false,
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bool enable_dual_source_blend = false) const;
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void WriteUniformBufferDeclaration(std::stringstream& ss, bool push_constant_on_vulkan) const;
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void DeclareUniformBuffer(std::stringstream& ss, const std::initializer_list<const char*>& members,
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bool push_constant_on_vulkan) const;
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void DeclareTexture(std::stringstream& ss, const char* name, u32 index, bool multisampled = false,
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bool is_int = false, bool is_unsigned = false) const;
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void DeclareTextureBuffer(std::stringstream& ss, const char* name, u32 index, bool is_int, bool is_unsigned) const;
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void DeclareImage(std::stringstream& ss, const char* name, u32 index, bool is_float = false, bool is_int = false,
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bool is_unsigned = false) const;
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void DeclareVertexEntryPoint(std::stringstream& ss, const std::initializer_list<const char*>& attributes,
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u32 num_color_outputs, u32 num_texcoord_outputs,
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const std::initializer_list<std::pair<const char*, const char*>>& additional_outputs,
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bool declare_vertex_id = false, const char* output_block_suffix = "", bool msaa = false,
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bool ssaa = false, bool noperspective_color = false) const;
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void
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DeclareFragmentEntryPoint(std::stringstream& ss, u32 num_color_inputs, u32 num_texcoord_inputs,
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const std::initializer_list<std::pair<const char*, const char*>>& additional_inputs = {},
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bool declare_fragcoord = false, u32 num_color_outputs = 1, bool dual_source_output = false,
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bool depth_output = false, bool msaa = false, bool ssaa = false,
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bool declare_sample_id = false, bool noperspective_color = false,
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bool feedback_loop = false, bool rov = false) const;
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protected:
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RenderAPI m_render_api;
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GPUShaderLanguage m_shader_language;
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bool m_glsl;
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bool m_spirv;
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bool m_supports_dual_source_blend;
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bool m_supports_framebuffer_fetch;
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bool m_use_glsl_interface_blocks = false;
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bool m_use_glsl_binding_layout = false;
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mutable bool m_has_uniform_buffer = false;
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TinyString m_glsl_version_string;
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};
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