1 /************************************************************************************

2

3 Filename : OVR_CAPI_GL.h

4 Content : GL specific structures used by the CAPI interface.

5 Created : November 7, 2013

6 Authors : Lee Cooper

7

8 Copyright : Copyright 2013 Oculus VR, LLC. All Rights reserved.

9

10 Use of this software is subject to the terms of the Oculus Inc license

11 agreement provided at the time of installation or download, or which

12 otherwise accompanies this software in either electronic or hard copy form.

13

14 ************************************************************************************/

15 #ifndef OVR_CAPI_GL_h

16 #define OVR_CAPI_GL_h

17

18 /// @file OVR_CAPI_GL.h

19 /// OpenGL rendering support.

20

21 #include "OVR_CAPI.h"

22 #if defined(__APPLE__)

23 #include <OpenGL/gl.h>

24 #else

25 #include <GL/gl.h>

26 #endif

27

28

29 /// Used to configure slave GL rendering (i.e. for devices created externally).

30 typedef struct OVR_ALIGNAS(8) ovrGLConfigData_s

31 {

32 /// General device settings.

33 ovrRenderAPIConfigHeader Header;

34

35 #if defined(OVR_OS_WIN32)

36 /// The optional window handle. If unset, rendering will use the current window.

37 HWND Window;

38 /// The optional device context. If unset, rendering will use a new context.

39 HDC DC;

40 #elif defined (OVR_OS_LINUX)

41 /// Optional display. If unset, will issue glXGetCurrentDisplay when context

42 /// is current.

43 struct _XDisplay* Disp;

44 #endif

45 } ovrGLConfigData;

46

47 /// Contains OpenGL-specific rendering information.

48 union ovrGLConfig

49 {

50 /// General device settings.

51 ovrRenderAPIConfig Config;

52 /// OpenGL-specific settings.

53 ovrGLConfigData OGL;

54 };

55

56 /// Used to pass GL eye texture data to ovrHmd_EndFrame.

57 typedef struct OVR_ALIGNAS(8) ovrGLTextureData_s

58 {

59 /// General device settings.

60 ovrTextureHeader Header;

61 /// The OpenGL name for this texture.

62 GLuint TexId;

63 } ovrGLTextureData;

64

65 static_assert(offsetof(ovrGLTextureData, TexId) == offsetof(ovrTexture, PlatformData), "Mismatch of structs that are presumed binary equivalents.");

66

67 /// Contains OpenGL-specific texture information.

68 typedef union ovrGLTexture_s

69 {

70 /// General device settings.

71 ovrTexture Texture;

72 /// OpenGL-specific settings.

73 ovrGLTextureData OGL;

74 } ovrGLTexture;

75

76 #endif // OVR_CAPI_GL_h