144 lines
3.6 KiB
C++
144 lines
3.6 KiB
C++
/******************************Module*Header*******************************\
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* Module Name: glutil.cxx
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*
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* Misc. utility functions
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*
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* Copyright (c) 1996 Microsoft Corporation
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*
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\**************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <windows.h>
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#include <GL/gl.h>
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#include <sys/types.h>
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#include <math.h>
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#include "mtk.h"
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#include "glutil.hxx"
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MTK_OS_INFO gOSInfo;
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MTK_GL_CAPS gGLCaps; // this should be per context, eventually
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void (__stdcall *glAddSwapHintRect)(GLint, GLint, GLint, GLint);
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/******************************Public*Routine******************************\
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* ss_fOnGL11
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*
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* True if running on OpenGL v.1.1x
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*
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\**************************************************************************/
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BOOL
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mtk_fOnGL11( void )
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{
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return gGLCaps.bGLv1_1;
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}
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/******************************Public*Routine******************************\
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* ss_fOnNT35
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*
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* True if running on NT version 3.51 or less
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*
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\**************************************************************************/
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BOOL
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mtk_fOnNT35( void )
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{
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return gOSInfo.fOnNT35;
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}
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/******************************Public*Routine******************************\
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* ss_fOnWin95
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*
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* True if running on Windows 95
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*
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\**************************************************************************/
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BOOL
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mtk_fOnWin95( void )
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{
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return gOSInfo.fOnWin95;
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}
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/******************************Public*Routine******************************\
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* MyAddSwapHintRect
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*
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\**************************************************************************/
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static void _stdcall
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MyAddSwapHintRect(GLint xs, GLint ys, GLint xe, GLint ye)
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{
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return;
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}
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/******************************Public*Routine******************************\
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* QueryAddSwapHintRectWIN
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*
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\**************************************************************************/
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//mf: again, per context problem
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BOOL
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mtk_QueryAddSwapHintRect()
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{
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glAddSwapHintRect = (PFNGLADDSWAPHINTRECTWINPROC)
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wglGetProcAddress("glAddSwapHintRectWIN");
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if (glAddSwapHintRect == NULL) {
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glAddSwapHintRect = MyAddSwapHintRect;
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return FALSE;
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}
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return TRUE;
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}
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/******************************Public*Routine******************************\
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* mtk_bAddSwapHintRect()
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*
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\**************************************************************************/
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BOOL
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mtk_bAddSwapHintRect()
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{
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return gGLCaps.bAddSwapHintRect;
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}
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/******************************Public*Routine******************************\
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\**************************************************************************/
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MTK_OS_INFO::MTK_OS_INFO()
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{
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osvi.dwOSVersionInfoSize = sizeof(osvi);
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GetVersionEx(&osvi);
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fOnWin95 = (osvi.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS);
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fOnNT35 =
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(
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(osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) &&
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(osvi.dwMajorVersion == 3 && osvi.dwMinorVersion <= 51)
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);
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}
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/******************************Public*Routine******************************\
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\**************************************************************************/
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MTK_GL_CAPS::MTK_GL_CAPS()
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{
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bGLv1_1 = FALSE;
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bTextureObjects = FALSE;
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bAddSwapHintRect = FALSE;
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bPalettedTexture = FALSE;
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}
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void
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MTK_GL_CAPS::Query()
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{
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bGLv1_1 = (BOOL) strstr( (char *) glGetString(GL_VERSION), "1.1" );
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if( bGLv1_1 )
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bTextureObjects = TRUE;
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if( !bTextureObjects )
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SS_DBGINFO( "MTK_GL_CAPS: Texture Objects disabled\n" );
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bAddSwapHintRect = mtk_QueryAddSwapHintRect();
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bPalettedTexture = mtk_QueryPalettedTextureEXT();
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}
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