Clean up OpenGL code and introduce the Framebuffer Manager. More work is forthcoming; I plan to implement resolution switching (while the game is running) and also multiple virtual XFBs for game-controlled buffer swapping.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3587 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Plugins/Plugin_VideoOGL/Src/FramebufferManager.h

@@ -0,0 +1,68 @@
+// Copyright (C) 2003-2009 Dolphin Project.
+
+// This program 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, version 2.0.
+
+// This program 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 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official SVN repository and contact information can be found at
+// http://code.google.com/p/dolphin-emu/
+
+#ifndef _FRAMEBUFFERMANAGER_H_
+#define _FRAMEBUFFERMANAGER_H_
+
+#include "GLUtil.h"
+
+class FramebufferManager
+{
+
+public:
+
+	FramebufferManager() :
+		m_efbFramebuffer(0),
+		m_efbColor(0),
+		m_efbDepth(0),
+		m_resolvedFramebuffer(0),
+		m_resolvedColorTexture(0),
+		m_resolvedDepthTexture(0),
+		m_xfbFramebuffer(0)
+	{}
+
+	void Init(int targetWidth, int targetHeight, int msaaSamples, int msaaCoverageSamples);
+	void Shutdown();
+
+	// To get the EFB in texture form, these functions may have to transfer
+	// the EFB to a resolved texture first.
+	GLuint GetEFBColorTexture(const TRectangle& sourceRc) const;
+	GLuint GetEFBDepthTexture(const TRectangle& sourceRc) const;
+
+	GLuint GetEFBFramebuffer() const { return m_efbFramebuffer; }
+
+private:
+
+	int m_targetWidth;
+	int m_targetHeight;
+	int m_msaaSamples;
+	int m_msaaCoverageSamples;
+
+	GLuint m_efbFramebuffer;
+	GLuint m_efbColor; // Renderbuffer in MSAA mode; Texture otherwise
+	GLuint m_efbDepth; // Renderbuffer in MSAA mode; Texture otherwise
+
+	// Only used in MSAA mode.
+	GLuint m_resolvedFramebuffer;
+	GLuint m_resolvedColorTexture;
+	GLuint m_resolvedDepthTexture;
+
+	GLuint m_xfbFramebuffer; // Only used in MSAA mode
+
+};
+
+#endif