1 files changed, 68 insertions, 0 deletions
diff --git a/src/GPU_OpenGL.h b/src/GPU_OpenGL.h
new file mode 100644
index 0000000..1fcb08f
--- /dev/null
+++ b/src/GPU_OpenGL.h
@@ -0,0 +1,68 @@
+/*
+    Copyright 2016-2020 Arisotura
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#pragma once
+
+#include "OpenGLSupport.h"
+
+namespace GPU
+{
+
+struct RenderSettings;
+
+class GLCompositor
+{
+public:
+    GLCompositor() = default;
+    GLCompositor(const GLCompositor&) = delete;
+    GLCompositor& operator=(const GLCompositor&) = delete;
+
+    bool Init();
+    void DeInit();
+    void Reset();
+
+    void SetRenderSettings(RenderSettings& settings);
+
+    void Stop();
+    void RenderFrame();
+    void BindOutputTexture(int buf);
+private:
+
+    int Scale;
+    int ScreenH, ScreenW;
+
+    GLuint CompShader[1][3];
+    GLuint CompScaleLoc[1];
+    GLuint Comp3DXPosLoc[1];
+
+    GLuint CompVertexBufferID;
+    GLuint CompVertexArrayID;
+
+    struct CompVertex
+    {
+        float Position[2];
+        float Texcoord[2];
+    };
+    CompVertex CompVertices[2 * 3*2];
+
+    GLuint CompScreenInputTex;
+    GLuint CompScreenOutputTex[2];
+    GLuint CompScreenOutputFB[2];
+};
+
+}
+\ No newline at end of file