networking

external/steamworks/glmgr/cglmfbo.h

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+//============ Copyright (c) Valve Corporation, All rights reserved. ============
+//
+// cglmfbo.h
+//	GLMgr FBO's (render targets)
+//
+//===============================================================================
+
+#ifndef CGLMFBO_H
+#define	CGLMFBO_H
+
+#pragma once
+
+#include "cglmtex.h"
+
+// good FBO references / recaps
+// http://www.songho.ca/opengl/gl_fbo.html
+// http://www.gamedev.net/reference/articles/article2331.asp
+
+// ext links
+
+// http://www.opengl.org/registry/specs/EXT/framebuffer_object.txt
+// http://www.opengl.org/registry/specs/EXT/framebuffer_multisample.txt
+
+//===============================================================================
+
+// tokens not in the SDK headers
+
+#ifndef	GL_DEPTH_STENCIL_ATTACHMENT_EXT
+	#define GL_DEPTH_STENCIL_ATTACHMENT_EXT 0x84F9
+#endif
+
+//===============================================================================
+
+// forward declarations
+
+class	GLMContext;
+
+// implicitly 16 maximum color attachments possible
+enum EGLMFBOAttachment {
+	kAttColor0,		kAttColor1,		kAttColor2,		kAttColor3,
+	kAttColor4,		kAttColor5,		kAttColor6,		kAttColor7,
+	kAttColor8,		kAttColor9,		kAttColor10,	kAttColor11,
+	kAttColor12,	kAttColor13,	kAttColor14,	kAttColor15,
+	kAttDepth,		kAttStencil,	kAttDepthStencil,
+	kAttCount
+};
+
+struct GLMFBOTexAttachParams
+{	
+	CGLMTex				*m_tex;
+	int					m_face;		// keep zero if not cube map
+	int					m_mip;		// keep zero if notmip mapped
+	int					m_zslice;	// keep zero if not a 3D tex
+};
+
+class CGLMFBO
+{
+
+public:
+
+protected:
+	friend class GLMContext;			// only GLMContext can make CGLMFBO objects
+	friend class GLMTester;
+	friend class CGLMTex;
+	
+	friend struct IDirect3D9;
+	friend struct IDirect3DDevice9;
+		
+			CGLMFBO( GLMContext *ctx );
+			~CGLMFBO( );	
+
+	void	TexAttach( GLMFBOTexAttachParams *params, EGLMFBOAttachment attachIndex, GLenum fboBindPoint = GL_FRAMEBUFFER_EXT );
+	void	TexDetach( EGLMFBOAttachment attachIndex, GLenum fboBindPoint = GL_FRAMEBUFFER_EXT );
+		// you can also pass GL_READ_FRAMEBUFFER_EXT or GL_DRAW_FRAMEBUFFER_EXT to selectively bind the receiving FBO to one or the other.
+
+	void	TexScrub( CGLMTex *tex );
+		// search and destroy any attachment for the named texture
+	
+	bool	IsReady( void );				// aka FBO completeness check - ready to draw
+	
+	GLMContext				*m_ctx;			// link back to parent context
+
+	GLuint					m_name;			// name of this FBO in the context
+	
+	GLMFBOTexAttachParams	m_attach[ kAttCount ];	// indexed by EGLMFBOAttachment
+	
+	int						m_sizeX,m_sizeY;
+};	
+
+
+#endif