VideoBackends: Add AbstractShader and AbstractPipeline classes

1 files changed, 40 insertions, 0 deletions

diff --git a/Source/Core/VideoBackends/OGL/ProgramShaderCache.h b/Source/Core/VideoBackends/OGL/ProgramShaderCache.h
index 6d3f95954e..635c1d3097 100644
--- a/Source/Core/VideoBackends/OGL/ProgramShaderCache.h
+++ b/Source/Core/VideoBackends/OGL/ProgramShaderCache.h
@@ -4,8 +4,10 @@
 
 #pragma once
 
+#include <atomic>
 #include <memory>
 #include <tuple>
+#include <unordered_map>
 
 #include "Common/GL/GLUtil.h"
 #include "Common/LinearDiskCache.h"
@@ -21,7 +23,9 @@ class cInterfaceBase;
 
 namespace OGL
 {
+class OGLShader;
 class GLVertexFormat;
+class StreamBuffer;
 
 class SHADERUID
 {
@@ -81,6 +85,29 @@ struct SHADER
   void DestroyShaders();
 };
 
+struct PipelineProgramKey
+{
+  const OGLShader* vertex_shader;
+  const OGLShader* geometry_shader;
+  const OGLShader* pixel_shader;
+
+  bool operator==(const PipelineProgramKey& rhs) const;
+  bool operator!=(const PipelineProgramKey& rhs) const;
+  bool operator<(const PipelineProgramKey& rhs) const;
+};
+
+struct PipelineProgramKeyHash
+{
+  std::size_t operator()(const PipelineProgramKey& key) const;
+};
+
+struct PipelineProgram
+{
+  PipelineProgramKey key;
+  SHADER shader;
+  std::atomic_size_t reference_count{1};
+};
+
 class ProgramShaderCache
 {
 public:
@@ -98,6 +125,7 @@ public:
   static SHADER* SetUberShader(PrimitiveType primitive_type, const GLVertexFormat* vertex_format);
   static void BindVertexFormat(const GLVertexFormat* vertex_format);
   static void InvalidateVertexFormat();
+  static void InvalidateLastProgram();
 
   static bool CompileShader(SHADER& shader, const std::string& vcode, const std::string& pcode,
                             const std::string& gcode = "");
@@ -106,6 +134,9 @@ public:
   static bool CheckShaderCompileResult(GLuint id, GLenum type, const std::string& code);
   static bool CheckProgramLinkResult(GLuint id, const std::string& vcode, const std::string& pcode,
                                      const std::string& gcode);
+  static StreamBuffer* GetUniformBuffer();
+  static u32 GetUniformBufferAlignment();
+  static void InvalidateConstants();
   static void UploadConstants();
 
   static void Init();
@@ -115,6 +146,11 @@ public:
   static void RetrieveAsyncShaders();
   static void PrecompileUberShaders();
 
+  static const PipelineProgram* GetPipelineProgram(const OGLShader* vertex_shader,
+                                                   const OGLShader* geometry_shader,
+                                                   const OGLShader* pixel_shader);
+  static void ReleasePipelineProgram(const PipelineProgram* prog);
+
 private:
   template <typename UIDType>
   class ProgramShaderCacheInserter : public LinearDiskCacheReader<UIDType, u8>
@@ -189,6 +225,9 @@ private:
 
   typedef std::map<SHADERUID, PCacheEntry> PCache;
   typedef std::map<UBERSHADERUID, PCacheEntry> UberPCache;
+  typedef std::unordered_map<PipelineProgramKey, std::unique_ptr<PipelineProgram>,
+                             PipelineProgramKeyHash>
+      PipelineProgramMap;
 
   static void CreateAttributelessVAO();
   static GLuint CreateProgramFromBinary(const u8* value, u32 value_size);
@@ -202,6 +241,7 @@ private:
 
   static PCache pshaders;
   static UberPCache ubershaders;
+  static PipelineProgramMap pipelineprograms;
   static PCacheEntry* last_entry;
   static PCacheEntry* last_uber_entry;
   static SHADERUID last_uid;