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