Move frontend-common to util/core

src/util/shadergen.h

@@ -0,0 +1,60 @@
+// SPDX-FileCopyrightText: 2019-2022 Connor McLaughlin <stenzek@gmail.com>
+// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
+
+#pragma once
+
+#include "host_display.h"
+
+#include <sstream>
+#include <string>
+
+class ShaderGen
+{
+public:
+  ShaderGen(RenderAPI render_api, bool supports_dual_source_blend);
+  ~ShaderGen();
+
+  static bool UseGLSLBindingLayout();
+
+  std::string GenerateScreenQuadVertexShader();
+  std::string GenerateUVQuadVertexShader();
+  std::string GenerateFillFragmentShader();
+  std::string GenerateCopyFragmentShader();
+  std::string GenerateSampleFragmentShader();
+
+protected:
+  ALWAYS_INLINE bool IsVulkan() const { return (m_render_api == RenderAPI::Vulkan); }
+
+  const char* GetInterpolationQualifier(bool interface_block, bool centroid_interpolation, bool sample_interpolation,
+                                        bool is_out) const;
+
+#ifdef WITH_OPENGL
+  void SetGLSLVersionString();
+#endif
+
+  void DefineMacro(std::stringstream& ss, const char* name, bool enabled);
+  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);
+  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);
+
+  RenderAPI m_render_api;
+  bool m_glsl;
+  bool m_supports_dual_source_blend;
+  bool m_use_glsl_interface_blocks;
+  bool m_use_glsl_binding_layout;
+
+  std::string m_glsl_version_string;
+};