GPU: Partially implemented texture support

src/pse/gpu_hw.h

@@ -1,6 +1,7 @@
 #pragma once
 #include "gpu.h"
 #include <string>
+#include <sstream>
 #include <vector>
 
 class GPU_HW : public GPU
@@ -15,17 +16,30 @@ protected:
     s32 x;
     s32 y;
     u32 color;
-    u32 texcoord;
+    u16 texcoord;
+    u16 padding;
   };
 
-  void LoadVertices(RenderCommand rc, u32 num_vertices);
+  virtual void UpdateTexturePageTexture();
+
+  bool IsFlushed() const { return !m_batch_vertices.empty(); }
+
+  void DispatchRenderCommand(RenderCommand rc, u32 num_vertices) override;
 
   void CalcViewport(int* x, int* y, int* width, int* height);
   void CalcScissorRect(int* left, int* top, int* right, int* bottom);
 
   std::string GenerateVertexShader(bool textured);
-  std::string GenerateFragmentShader(bool textured);
+  std::string GenerateFragmentShader(bool textured, bool blending);
+  std::string GenerateScreenQuadVertexShader();
+  std::string GenerateTexturePageProgram(TextureColorMode mode);
 
-  std::vector<HWVertex> m_vertex_staging;
+  std::vector<HWVertex> m_batch_vertices;
+  RenderCommand m_batch_command = {};
+
+private:
+  void GenerateShaderHeader(std::stringstream& ss);
+
+  void LoadVertices(RenderCommand rc, u32 num_vertices);
 };