nuclear@0: /************************************************************************************
nuclear@0: 
nuclear@0: Filename    :   OVR_CAPI_GL.h
nuclear@0: Content     :   GL specific structures used by the CAPI interface.
nuclear@0: Created     :   November 7, 2013
nuclear@0: Authors     :   Lee Cooper
nuclear@0: 
nuclear@0: Copyright   :   Copyright 2013 Oculus VR, LLC. All Rights reserved.
nuclear@0: 
nuclear@0: Use of this software is subject to the terms of the Oculus Inc license
nuclear@0: agreement provided at the time of installation or download, or which
nuclear@0: otherwise accompanies this software in either electronic or hard copy form.
nuclear@0: 
nuclear@0: ************************************************************************************/
nuclear@0: #ifndef OVR_CAPI_GL_h
nuclear@0: #define OVR_CAPI_GL_h
nuclear@0: 
nuclear@0: /// @file OVR_CAPI_GL.h
nuclear@0: /// OpenGL rendering support.
nuclear@0: 
nuclear@0: #include "OVR_CAPI.h"
nuclear@0: #if defined(__APPLE__)
nuclear@0:     #include <OpenGL/gl.h>
nuclear@0: #else
nuclear@0:     #include <GL/gl.h>
nuclear@0: #endif
nuclear@0: 
nuclear@0: 
nuclear@0: /// Used to configure slave GL rendering (i.e. for devices created externally).
nuclear@0: typedef struct OVR_ALIGNAS(8) ovrGLConfigData_s
nuclear@0: {
nuclear@0:     /// General device settings.
nuclear@0:     ovrRenderAPIConfigHeader Header;
nuclear@0: 
nuclear@0: #if defined(OVR_OS_WIN32)
nuclear@0:     /// The optional window handle. If unset, rendering will use the current window.
nuclear@0:     HWND Window;
nuclear@0:     /// The optional device context. If unset, rendering will use a new context.
nuclear@0:     HDC  DC;
nuclear@0: #elif defined (OVR_OS_LINUX)
nuclear@0:     /// Optional display. If unset, will issue glXGetCurrentDisplay when context
nuclear@0:     /// is current.
nuclear@0:     struct _XDisplay* Disp;
nuclear@0: #endif
nuclear@0: } ovrGLConfigData;
nuclear@0: 
nuclear@0: /// Contains OpenGL-specific rendering information.
nuclear@0: union ovrGLConfig
nuclear@0: {
nuclear@0:     /// General device settings.
nuclear@0:     ovrRenderAPIConfig Config;
nuclear@0:     /// OpenGL-specific settings.
nuclear@0:     ovrGLConfigData    OGL;
nuclear@0: };
nuclear@0: 
nuclear@0: /// Used to pass GL eye texture data to ovrHmd_EndFrame.
nuclear@0: typedef struct OVR_ALIGNAS(8) ovrGLTextureData_s
nuclear@0: {
nuclear@0:     /// General device settings.
nuclear@0:     ovrTextureHeader Header;
nuclear@0:     /// The OpenGL name for this texture.
nuclear@0:     GLuint           TexId;       
nuclear@0: } ovrGLTextureData;
nuclear@0: 
nuclear@0: static_assert(offsetof(ovrGLTextureData, TexId) == offsetof(ovrTexture, PlatformData), "Mismatch of structs that are presumed binary equivalents.");
nuclear@0: 
nuclear@0: /// Contains OpenGL-specific texture information.
nuclear@0: typedef union ovrGLTexture_s
nuclear@0: {
nuclear@0:     /// General device settings.
nuclear@0:     ovrTexture       Texture;
nuclear@0:     /// OpenGL-specific settings.
nuclear@0:     ovrGLTextureData OGL;
nuclear@0: } ovrGLTexture;
nuclear@0: 
nuclear@0: #endif	// OVR_CAPI_GL_h