Duckstation/src/util/shadergen.h
2023-12-19 22:38:36 +10:00

69 lines
3.1 KiB
C++

// SPDX-FileCopyrightText: 2019-2023 Connor McLaughlin <stenzek@gmail.com>
// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
#pragma once
#include "gpu_device.h"
#include <sstream>
#include <string>
class ShaderGen
{
public:
ShaderGen(RenderAPI render_api, bool supports_dual_source_blend, bool supports_framebuffer_fetch);
~ShaderGen();
static bool UseGLSLBindingLayout();
std::string GenerateScreenQuadVertexShader();
std::string GenerateUVQuadVertexShader();
std::string GenerateFillFragmentShader();
std::string GenerateCopyFragmentShader();
std::string GenerateImGuiVertexShader();
std::string GenerateImGuiFragmentShader();
protected:
ALWAYS_INLINE bool IsVulkan() const { return (m_render_api == RenderAPI::Vulkan); }
ALWAYS_INLINE bool IsMetal() const { return (m_render_api == RenderAPI::Metal); }
const char* GetInterpolationQualifier(bool interface_block, bool centroid_interpolation, bool sample_interpolation,
bool is_out) const;
#ifdef ENABLE_OPENGL
void SetGLSLVersionString();
#endif
void DefineMacro(std::stringstream& ss, const char* name, bool enabled);
void DefineMacro(std::stringstream& ss, const char* name, s32 value);
void WriteHeader(std::stringstream& ss);
void WriteUniformBufferDeclaration(std::stringstream& ss, bool push_constant_on_vulkan);
void DeclareUniformBuffer(std::stringstream& ss, const std::initializer_list<const char*>& members,
bool push_constant_on_vulkan);
void DeclareTexture(std::stringstream& ss, const char* name, u32 index, bool multisampled = false,
bool is_int = false, bool is_unsigned = false);
void DeclareTextureBuffer(std::stringstream& ss, const char* name, u32 index, bool is_int, bool is_unsigned);
void DeclareVertexEntryPoint(std::stringstream& ss, const std::initializer_list<const char*>& attributes,
u32 num_color_outputs, u32 num_texcoord_outputs,
const std::initializer_list<std::pair<const char*, const char*>>& additional_outputs,
bool declare_vertex_id = false, const char* output_block_suffix = "", bool msaa = false,
bool ssaa = false, bool noperspective_color = false);
void DeclareFragmentEntryPoint(std::stringstream& ss, u32 num_color_inputs, u32 num_texcoord_inputs,
const std::initializer_list<std::pair<const char*, const char*>>& additional_inputs,
bool declare_fragcoord = false, u32 num_color_outputs = 1, bool depth_output = false,
bool msaa = false, bool ssaa = false, bool declare_sample_id = false,
bool noperspective_color = false, bool framebuffer_fetch = false);
RenderAPI m_render_api;
bool m_glsl;
bool m_spirv;
bool m_supports_dual_source_blend;
bool m_supports_framebuffer_fetch;
bool m_use_glsl_interface_blocks;
bool m_use_glsl_binding_layout;
bool m_has_uniform_buffer = false;
std::string m_glsl_version_string;
};