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Added osgpbuffer example source.

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This commit is contained in:
Robert Osfield
2003-03-15 16:41:27 +00:00
parent 0fdbf3ae67
commit e791014d5c
5 changed files with 1457 additions and 0 deletions
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examples/osgpbuffer/pbuffer.h Normal file
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#ifndef PBUFFERS_H
#define PBUFFERS_H
/*
#include <windows.h>
#include "GL/gl.h"
#include <GL/glut.h>
#include "GL/wglext.h"
#include <GL/glext.h>
*/
#include <osg/GL>
#if defined(WIN32)
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
#ifndef WGL_ARB_pbuffer
#define WGL_NUMBER_PIXEL_FORMATS_ARB 0x2000
#define WGL_DRAW_TO_WINDOW_ARB 0x2001
#define WGL_DRAW_TO_BITMAP_ARB 0x2002
#define WGL_ACCELERATION_ARB 0x2003
#define WGL_NEED_PALETTE_ARB 0x2004
#define WGL_NEED_SYSTEM_PALETTE_ARB 0x2005
#define WGL_SWAP_LAYER_BUFFERS_ARB 0x2006
#define WGL_SWAP_METHOD_ARB 0x2007
#define WGL_NUMBER_OVERLAYS_ARB 0x2008
#define WGL_NUMBER_UNDERLAYS_ARB 0x2009
#define WGL_TRANSPARENT_ARB 0x200A
#define WGL_TRANSPARENT_RED_VALUE_ARB 0x2037
#define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038
#define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039
#define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A
#define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B
#define WGL_SHARE_DEPTH_ARB 0x200C
#define WGL_SHARE_STENCIL_ARB 0x200D
#define WGL_SHARE_ACCUM_ARB 0x200E
#define WGL_SUPPORT_GDI_ARB 0x200F
#define WGL_SUPPORT_OPENGL_ARB 0x2010
#define WGL_DOUBLE_BUFFER_ARB 0x2011
#define WGL_STEREO_ARB 0x2012
#define WGL_PIXEL_TYPE_ARB 0x2013
#define WGL_COLOR_BITS_ARB 0x2014
#define WGL_RED_BITS_ARB 0x2015
#define WGL_RED_SHIFT_ARB 0x2016
#define WGL_GREEN_BITS_ARB 0x2017
#define WGL_GREEN_SHIFT_ARB 0x2018
#define WGL_BLUE_BITS_ARB 0x2019
#define WGL_BLUE_SHIFT_ARB 0x201A
#define WGL_ALPHA_BITS_ARB 0x201B
#define WGL_ALPHA_SHIFT_ARB 0x201C
#define WGL_ACCUM_BITS_ARB 0x201D
#define WGL_ACCUM_RED_BITS_ARB 0x201E
#define WGL_ACCUM_GREEN_BITS_ARB 0x201F
#define WGL_ACCUM_BLUE_BITS_ARB 0x2020
#define WGL_ACCUM_ALPHA_BITS_ARB 0x2021
#define WGL_DEPTH_BITS_ARB 0x2022
#define WGL_STENCIL_BITS_ARB 0x2023
#define WGL_AUX_BUFFERS_ARB 0x2024
#define WGL_NO_ACCELERATION_ARB 0x2025
#define WGL_GENERIC_ACCELERATION_ARB 0x2026
#define WGL_FULL_ACCELERATION_ARB 0x2027
#define WGL_SWAP_EXCHANGE_ARB 0x2028
#define WGL_SWAP_COPY_ARB 0x2029
#define WGL_SWAP_UNDEFINED_ARB 0x202A
#define WGL_TYPE_RGBA_ARB 0x202B
#define WGL_TYPE_COLORINDEX_ARB 0x202C
#define WGL_DRAW_TO_PBUFFER_ARB 0x202D
#define WGL_MAX_PBUFFER_PIXELS_ARB 0x202E
#define WGL_MAX_PBUFFER_WIDTH_ARB 0x202F
#define WGL_MAX_PBUFFER_HEIGHT_ARB 0x2030
#define WGL_PBUFFER_LARGEST_ARB 0x2033
#define WGL_PBUFFER_WIDTH_ARB 0x2034
#define WGL_PBUFFER_HEIGHT_ARB 0x2035
#define WGL_PBUFFER_LOST_ARB 0x2036
#endif
#ifndef WGL_ARB_pbuffer
#define WGL_ARB_pbuffer 1
DECLARE_HANDLE(HPBUFFERARB);
typedef HPBUFFERARB (WINAPI * WGLCreatePBufferProc) (
HDC hDC,
int iPixelFormat,
int iWidth,
int iHeight,
const int *piAttribList);
typedef HDC (WINAPI * WGLGetPBufferDCProc) (HPBUFFERARB hPbuffer);
typedef int (WINAPI * WGLReleasePBufferDCProc) (
HPBUFFERARB hPbuffer,
HDC hDC);
typedef BOOL (WINAPI * WGLDestroyPBufferProc) (HPBUFFERARB hPbuffer);
typedef BOOL (WINAPI * WGLQueryPBufferProc) (
HPBUFFERARB hPbuffer,
int iAttribute,
int *piValue);
#endif
#ifndef WGL_ARB_pixel_format
#define WGL_ARB_pixel_format 1
typedef BOOL (WINAPI * WGLGetPixelFormatAttribivProc) (HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, int *piValues);
typedef BOOL (WINAPI * WGLGetPixelFormatAttribfvProc) (HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, FLOAT *pfValues);
typedef BOOL (WINAPI * WGLChoosePixelFormatProc) (HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats);
#endif
#ifndef WGL_ARB_render_texture
#define WGL_BIND_TO_TEXTURE_RGB_ARB 0x2070
#define WGL_BIND_TO_TEXTURE_RGBA_ARB 0x2071
#define WGL_TEXTURE_FORMAT_ARB 0x2072
#define WGL_TEXTURE_TARGET_ARB 0x2073
#define WGL_MIPMAP_TEXTURE_ARB 0x2074
#define WGL_TEXTURE_RGB_ARB 0x2075
#define WGL_TEXTURE_RGBA_ARB 0x2076
#define WGL_NO_TEXTURE_ARB 0x2077
#define WGL_TEXTURE_CUBE_MAP_ARB 0x2078
#define WGL_TEXTURE_1D_ARB 0x2079
#define WGL_TEXTURE_2D_ARB 0x207A
#define WGL_NO_TEXTURE_ARB 0x2077
#define WGL_MIPMAP_LEVEL_ARB 0x207B
#define WGL_CUBE_MAP_FACE_ARB 0x207C
#define WGL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB 0x207D
#define WGL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB 0x207E
#define WGL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB 0x207F
#define WGL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB 0x2080
#define WGL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB 0x2081
#define WGL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB 0x2082
#define WGL_FRONT_LEFT_ARB 0x2083
#define WGL_FRONT_RIGHT_ARB 0x2084
#define WGL_BACK_LEFT_ARB 0x2085
#define WGL_BACK_RIGHT_ARB 0x2086
#define WGL_AUX0_ARB 0x2087
#define WGL_AUX1_ARB 0x2088
#define WGL_AUX2_ARB 0x2089
#define WGL_AUX3_ARB 0x208A
#define WGL_AUX4_ARB 0x208B
#define WGL_AUX5_ARB 0x208C
#define WGL_AUX6_ARB 0x208D
#define WGL_AUX7_ARB 0x208E
#define WGL_AUX8_ARB 0x208F
#define WGL_AUX9_ARB 0x2090
#endif
#ifndef WGL_ARB_render_texture
#define WGL_ARB_render_texture 1
typedef BOOL (WINAPI * WGLBindTexImageProc) (HPBUFFERARB hPbuffer, int iBuffer);
typedef BOOL (WINAPI * WGLReleaseTexImageProc) (HPBUFFERARB hPbuffer, int iBuffer);
typedef BOOL (WINAPI * WGLSetPbufferAttribProc) (HPBUFFERARB hPbuffer, const int * piAttribList);
#endif
#define MAX_PFORMATS 256
#define MAX_ATTRIBS 32
class PBuffer
{
private:
HDC _hDC; // Handle to a device context.
HGLRC _hGLcontext; // Handle to a GL context.
HPBUFFERARB _hPBuffer; // Handle to a pbuffer.
int _width;
int _height;
bool _doubleBuffer;
bool _RGB;
bool _shareLists;
unsigned int _minimumNumberDepthBits;
unsigned int _minimumNumberAlphaBits;
unsigned int _minimumNumberStencilBits;
unsigned int _minimumNumberAccumulationBits;
bool _isPBufferSupported;
bool _isPixelFormatSupported;
bool _isRenderTextureSupported;
public:
PBuffer(const int width, const int height );
~PBuffer();
void handleModeSwitch();
void makeCurrent();
void initialize();
void bindTexImage(GLuint textureID);
void releaseTexImage();
protected:
void setupGLExtenions();
};
#endif