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- /* fxwgl.c - Microsoft wgl functions emulation for
- * 3Dfx VooDoo/Mesa interface
- */
-
- /*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * See the file fxapi.c for more informations about authors
- *
- */
-
- #ifdef __WIN32__
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- #include <GL/gl.h>
- #include <GL/glu.h>
-
- #ifdef __cplusplus
- }
- #endif
-
- #include <stdio.h>
- #include <windows.h>
-
- #include <GL/fxmesa.h>
-
- #include "fxdrv.h"
-
- #define MAX_MESA_ATTRS 20
-
- struct __extensions__
- {
- PROC proc;
- char *name;
- };
-
- struct __pixelformat__
- {
- PIXELFORMATDESCRIPTOR pfd;
- GLint mesaAttr[MAX_MESA_ATTRS];
- };
-
- WINGDIAPI void APIENTRY gl3DfxSetPaletteEXT(GLuint *);
-
- static struct __extensions__ ext[] = {
-
- #ifdef GL_EXT_polygon_offset
- { (PROC)glPolygonOffsetEXT, "glPolygonOffsetEXT" },
- #endif
- { (PROC)glBlendEquationEXT, "glBlendEquationEXT" },
- { (PROC)glBlendColorEXT, "glBlendColorExt" },
- { (PROC)glVertexPointerEXT, "glVertexPointerEXT" },
- { (PROC)glNormalPointerEXT, "glNormalPointerEXT" },
- { (PROC)glColorPointerEXT, "glColorPointerEXT" },
- { (PROC)glIndexPointerEXT, "glIndexPointerEXT" },
- { (PROC)glTexCoordPointerEXT, "glTexCoordPointer" },
- { (PROC)glEdgeFlagPointerEXT, "glEdgeFlagPointerEXT" },
- { (PROC)glGetPointervEXT, "glGetPointervEXT" },
- { (PROC)glArrayElementEXT, "glArrayElementEXT" },
- { (PROC)glDrawArraysEXT, "glDrawArrayEXT" },
- { (PROC)glAreTexturesResidentEXT, "glAreTexturesResidentEXT" },
- { (PROC)glBindTextureEXT, "glBindTextureEXT" },
- { (PROC)glDeleteTexturesEXT, "glDeleteTexturesEXT" },
- { (PROC)glGenTexturesEXT, "glGenTexturesEXT" },
- { (PROC)glIsTextureEXT, "glIsTextureEXT" },
- { (PROC)glPrioritizeTexturesEXT, "glPrioritizeTexturesEXT" },
- { (PROC)glCopyTexSubImage3DEXT, "glCopyTexSubImage3DEXT" },
- { (PROC)glTexImage3DEXT, "glTexImage3DEXT" },
- { (PROC)glTexSubImage3DEXT, "glTexSubImage3DEXT" },
- { (PROC)gl3DfxSetPaletteEXT, "3DFX_set_global_palette" }
- /*
- ,{ (PROC)glSelectTextureSGIS, "glSelectTextureSGIS" },
- { (PROC)glMultiTexCoord2fSGIS, "glMTexCoord2fSGIS" },
- { (PROC)glMultiTexCoord2fvSGIS, "glMTexCoord2fvSGIS" }
- */
- };
-
- static int qt_ext = sizeof(ext) / sizeof(ext[0]);
-
- struct __pixelformat__ pix[] =
- {
- /* None */
- {
- {
- sizeof(PIXELFORMATDESCRIPTOR), 1,
- PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|
- PFD_DOUBLEBUFFER|PFD_SWAP_COPY,
- PFD_TYPE_RGBA,
- 32,
- 8,0,8,8,8,16,0,24,
- 0,0,0,0,0,
- 0,
- 0,
- 0,
- PFD_MAIN_PLANE,
- 0,0,0,0
- },
- {
- FXMESA_DOUBLEBUFFER,
- FXMESA_ALPHA_SIZE, 0,
- FXMESA_DEPTH_SIZE, 0,
- FXMESA_STENCIL_SIZE, 0,
- FXMESA_ACCUM_SIZE, 0,
- FXMESA_NONE
- }
- },
-
- /* Alpha */
- {
- {
- sizeof(PIXELFORMATDESCRIPTOR), 1,
- PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|
- PFD_DOUBLEBUFFER|PFD_SWAP_COPY,
- PFD_TYPE_RGBA,
- 32,
- 8,0,8,8,8,16,8,24,
- 0,0,0,0,0,
- 0,
- 0,
- 0,
- PFD_MAIN_PLANE,
- 0,0,0,0
- },
- {
- FXMESA_DOUBLEBUFFER,
- FXMESA_ALPHA_SIZE, 8,
- FXMESA_DEPTH_SIZE, 0,
- FXMESA_STENCIL_SIZE, 0,
- FXMESA_ACCUM_SIZE, 0,
- FXMESA_NONE
- }
- },
-
- /* Depth */
- {
- {
- sizeof(PIXELFORMATDESCRIPTOR), 1,
- PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|
- PFD_DOUBLEBUFFER|PFD_SWAP_COPY,
- PFD_TYPE_RGBA,
- 32,
- 8,0,8,8,8,16,0,24,
- 0,0,0,0,0,
- 16,
- 0,
- 0,
- PFD_MAIN_PLANE,
- 0,0,0,0
- },
- {
- FXMESA_DOUBLEBUFFER,
- FXMESA_ALPHA_SIZE, 0,
- FXMESA_DEPTH_SIZE, 16,
- FXMESA_STENCIL_SIZE, 0,
- FXMESA_ACCUM_SIZE, 0,
- FXMESA_NONE
- }
- }
- };
- static int qt_pix = sizeof(pix) / sizeof(pix[0]);
-
- static fxMesaContext ctx = NULL;
- static WNDPROC hWNDOldProc;
- static int curPFD = 0;
- static HDC hDC;
- static HWND hWND;
-
- static GLboolean haveDualHead;
-
- /* For the in-window-rendering hack */
-
- static GLboolean gdiWindowHack;
- static GLboolean gdiWindowHackEna;
- static void *dibSurfacePtr;
- static BITMAPINFO *dibBMI;
- static HBITMAP dibHBM;
- static HWND dibWnd;
-
- LONG APIENTRY __wglMonitor(HWND hwnd,UINT message,UINT wParam,LONG lParam)
-
- {
- long ret; /* Now gives the resized window at the end to hWNDOldProc */
-
- if(ctx && hwnd == hWND) {
- switch(message) {
- case WM_PAINT:
- case WM_MOVE:
- break;
- case WM_DISPLAYCHANGE:
- case WM_SIZE:
- if (wParam != SIZE_MINIMIZED) {
- static int moving = 0;
- if (!moving) {
- if(fxQueryHardware()!=GR_SSTTYPE_VOODOO) {
- if(!grSstControl(GR_CONTROL_RESIZE)) {
- moving = 1;
- SetWindowPos(hwnd, 0, 0, 0, 300, 300, SWP_NOMOVE|SWP_NOZORDER);
- moving = 0;
- if(!grSstControl(GR_CONTROL_RESIZE)) {
- /*MessageBox(0,_T("Error changing windowsize"),_T("fxMESA"),MB_OK);*/
- PostMessage(hWND,WM_CLOSE,0,0);
- }
- }
- }
-
- /* Do the clipping in the glide library */
- grClipWindow(0,0,grSstScreenWidth(),grSstScreenHeight());
- /* And let the new size set in the context */
- fxMesaUpdateScreenSize(ctx);
- }
- }
- break;
- case WM_ACTIVATE:
- if((fxQueryHardware()==GR_SSTTYPE_VOODOO) &&
- (!gdiWindowHack) &&
- (!haveDualHead)) {
- WORD fActive = LOWORD(wParam);
- BOOL fMinimized = (BOOL) HIWORD(wParam);
-
- if((fActive == WA_INACTIVE) || fMinimized)
- grSstControl(GR_CONTROL_DEACTIVATE);
- else
- grSstControl(GR_CONTROL_ACTIVATE);
- }
- break;
- case WM_SHOWWINDOW:
- break;
- case WM_SYSCHAR:
- if(gdiWindowHackEna && (VK_RETURN == wParam)) {
- if(gdiWindowHack) {
- gdiWindowHack = GL_FALSE;
- grSstControl(GR_CONTROL_ACTIVATE);
- } else {
- gdiWindowHack = GL_TRUE;
- grSstControl(GR_CONTROL_DEACTIVATE);
- }
- }
- break;
- }
- }
-
- /* Finaly call the hWNDOldProc, which handles the resize witch the
- now changed window sizes */
- ret = (hWNDOldProc)(hwnd,message,wParam,lParam);
- return(ret);
- }
-
- BOOL APIENTRY wglCopyContext(HGLRC hglrcSrc,HGLRC hglrcDst,UINT mask)
- {
- return(FALSE);
- }
-
- HGLRC APIENTRY wglCreateContext(HDC hdc)
- {
- HWND hWnd;
- WNDPROC oldProc;
- int error;
-
- if(ctx) {
- SetLastError(0);
- return(NULL);
- }
-
- if(!(hWnd = WindowFromDC(hdc))) {
- SetLastError(0);
- return(NULL);
- }
-
- if(curPFD == 0) {
- SetLastError(0);
- return(NULL);
- }
-
- if((oldProc = (WNDPROC)GetWindowLong(hWnd,GWL_WNDPROC)) != __wglMonitor) {
- hWNDOldProc = oldProc;
- SetWindowLong(hWnd,GWL_WNDPROC,(LONG)__wglMonitor);
- }
-
- #ifndef FX_SILENT
- freopen("MESA.LOG","w",stderr);
- #endif
-
- ShowWindow(hWnd, SW_SHOWNORMAL);
- SetForegroundWindow(hWnd);
- Sleep(100); /* an hack for win95 */
-
- if(fxQueryHardware() == GR_SSTTYPE_VOODOO) {
- RECT cliRect;
-
- GetClientRect(hWnd,&cliRect);
- error = !(ctx = fxMesaCreateBestContext((GLuint)hWnd,cliRect.right,cliRect.bottom,
- pix[curPFD - 1].mesaAttr));
-
- if(!error) {
- /* create the DIB section for windowed rendering */
- DWORD *p;
-
- dibWnd = hWnd;
-
- hDC = GetDC(dibWnd);
-
- dibBMI = (BITMAPINFO*) malloc( sizeof(BITMAPINFO) + (256*sizeof(RGBQUAD)));
-
- memset(dibBMI,0,sizeof(BITMAPINFO) + (256*sizeof(RGBQUAD)));
-
- dibBMI->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
- dibBMI->bmiHeader.biWidth = ctx->width;
- dibBMI->bmiHeader.biHeight = -ctx->height;
- dibBMI->bmiHeader.biPlanes = (short)1;
- dibBMI->bmiHeader.biBitCount = (short)16;
- dibBMI->bmiHeader.biCompression = BI_BITFIELDS;
- dibBMI->bmiHeader.biSizeImage = 0;
- dibBMI->bmiHeader.biXPelsPerMeter = 0;
- dibBMI->bmiHeader.biYPelsPerMeter = 0;
- dibBMI->bmiHeader.biClrUsed = 3;
- dibBMI->bmiHeader.biClrImportant = 3;
-
- p = (DWORD*)dibBMI->bmiColors;
- p[0] = 0xF800;
- p[1] = 0x07E0;
- p[2] = 0x001F;
-
- dibHBM = CreateDIBSection(hDC, dibBMI, DIB_RGB_COLORS, &dibSurfacePtr, NULL, 0);
-
- ReleaseDC(dibWnd, hDC);
-
- gdiWindowHackEna = (dibHBM != NULL ? GL_TRUE : GL_FALSE);
-
- if (!getenv("MESA_WGL_FX") || !strcmp(getenv("MESA_WGL_FX"),"fullscreen"))
- gdiWindowHack = GL_FALSE;
- else {
- gdiWindowHack = GL_TRUE;
- grSstControl(GR_CONTROL_DEACTIVATE);
- }
- }
- } else {
- /* For the Voodoo Rush */
-
- if(getenv("MESA_WGL_FX") && !strcmp(getenv("MESA_WGL_FX"),"fullscreen")) {
- RECT cliRect;
-
- GetClientRect(hWnd,&cliRect);
- error = !(ctx = fxMesaCreateBestContext((GLuint)hWnd,cliRect.right,cliRect.bottom,
- pix[curPFD - 1].mesaAttr));
- } else
- error = !(ctx = fxMesaCreateContext((GLuint)hWnd,GR_RESOLUTION_NONE,GR_REFRESH_75Hz,
- pix[curPFD - 1].mesaAttr));
- }
-
- if(getenv("SST_DUALHEAD"))
- haveDualHead=((atoi(getenv("SST_DUALHEAD"))==1) ? GL_TRUE:GL_FALSE);
- else
- haveDualHead=GL_FALSE;
-
- if(error) {
- SetLastError(0);
- return(NULL);
- }
-
- hDC = hdc;
- hWND = hWnd;
-
- /* Required by the OpenGL Optimizer 1.1 (is it a Optimizer bug ?) */
- wglMakeCurrent(hdc,(HGLRC)1);
-
- return((HGLRC)1);
- }
-
- HGLRC APIENTRY wglCreateLayerContext(HDC hdc,int iLayerPlane)
- {
- SetLastError(0);
- return(NULL);
- }
-
- BOOL APIENTRY wglDeleteContext(HGLRC hglrc)
- {
- if(ctx && hglrc == (HGLRC)1) {
- if (gdiWindowHackEna) {
- DeleteObject(dibHBM);
- free(dibBMI);
-
- dibSurfacePtr = NULL;
- dibBMI = NULL;
- dibHBM = NULL;
- dibWnd = NULL;
- }
-
- fxMesaDestroyContext(ctx);
-
- SetWindowLong(WindowFromDC(hDC),GWL_WNDPROC,(LONG)hWNDOldProc);
-
- ctx = NULL;
- hDC = 0;
- return(TRUE);
- }
-
- SetLastError(0);
-
- return(FALSE);
- }
-
- HGLRC APIENTRY wglGetCurrentContext(VOID)
- {
- if(ctx)
- return((HGLRC)1);
-
- SetLastError(0);
- return(NULL);
- }
-
- HDC APIENTRY wglGetCurrentDC(VOID)
- {
- if(ctx)
- return(hDC);
-
- SetLastError(0);
- return(NULL);
- }
-
- PROC APIENTRY wglGetProcAddress(LPCSTR lpszProc)
- {
- int i;
-
- /*fprintf(stderr,"fxMesa: looking for extension %s\n",lpszProc);
- fflush(stderr);*/
-
- for(i = 0;i < qt_ext;i++)
- if(!strcmp(lpszProc,ext[i].name)) {
- /*fprintf(stderr,"fxMesa: found extension %s\n",lpszProc);
- fflush(stderr);*/
-
- return(ext[i].proc);
- }
- SetLastError(0);
- return(NULL);
- }
-
- BOOL APIENTRY wglMakeCurrent(HDC hdc,HGLRC hglrc)
- {
- if((hdc==NULL) && (hglrc==NULL))
- return(TRUE);
-
- if(!ctx || hglrc != (HGLRC)1 || WindowFromDC(hdc) != hWND) {
- SetLastError(0);
- return(FALSE);
- }
-
- hDC = hdc;
-
- fxMesaMakeCurrent(ctx);
-
- return(TRUE);
- }
-
- BOOL APIENTRY wglShareLists(HGLRC hglrc1,HGLRC hglrc2)
- {
- if(!ctx || hglrc1 != (HGLRC)1 || hglrc1 != hglrc2) {
- SetLastError(0);
- return(FALSE);
- }
-
- return(TRUE);
- }
-
- BOOL APIENTRY wglUseFontBitmaps(HDC fontDevice, DWORD firstChar, DWORD numChars, DWORD listBase)
- {
- #define VERIFY(a) a
-
- TEXTMETRIC metric;
- BITMAPINFO *dibInfo;
- HDC bitDevice;
- COLORREF tempColor;
- int i;
-
- VERIFY(GetTextMetrics(fontDevice, &metric));
-
- dibInfo = (BITMAPINFO *) calloc(sizeof(BITMAPINFO) + sizeof(RGBQUAD), 1);
- dibInfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
- dibInfo->bmiHeader.biPlanes = 1;
- dibInfo->bmiHeader.biBitCount = 1;
- dibInfo->bmiHeader.biCompression = BI_RGB;
-
- bitDevice = CreateCompatibleDC(fontDevice);
- // HDC bitDevice = CreateDC("DISPLAY", NULL, NULL, NULL);
- // VERIFY(bitDevice);
-
- // Swap fore and back colors so the bitmap has the right polarity
- tempColor = GetBkColor(bitDevice);
- SetBkColor(bitDevice, GetTextColor(bitDevice));
- SetTextColor(bitDevice, tempColor);
-
- // Place chars based on base line
- VERIFY(SetTextAlign(bitDevice, TA_BASELINE) >= 0);
-
- for(i = 0; i < numChars; i++) {
- SIZE size;
- char curChar;
- int charWidth,charHeight,bmapWidth,bmapHeight,numBytes,res;
- HBITMAP bitObject;
- HGDIOBJ origBmap;
- unsigned char *bmap;
-
- curChar = i + firstChar;
-
- // Find how high/wide this character is
- VERIFY(GetTextExtentPoint32(bitDevice, &curChar, 1, &size));
-
- // Create the output bitmap
- charWidth = size.cx;
- charHeight = size.cy;
- bmapWidth = ((charWidth + 31) / 32) * 32; // Round up to the next multiple of 32 bits
- bmapHeight = charHeight;
- bitObject = CreateCompatibleBitmap(bitDevice,
- bmapWidth,
- bmapHeight);
- //VERIFY(bitObject);
-
- // Assign the output bitmap to the device
- origBmap = SelectObject(bitDevice, bitObject);
- VERIFY(origBmap);
-
- VERIFY( PatBlt( bitDevice, 0, 0, bmapWidth, bmapHeight,BLACKNESS ) );
-
- // Use our source font on the device
- VERIFY(SelectObject(bitDevice, GetCurrentObject(fontDevice,OBJ_FONT)));
-
- // Draw the character
- VERIFY(TextOut(bitDevice, 0, metric.tmAscent, &curChar, 1));
-
- // Unselect our bmap object
- VERIFY(SelectObject(bitDevice, origBmap));
-
- // Convert the display dependant representation to a 1 bit deep DIB
- numBytes = (bmapWidth * bmapHeight) / 8;
- bmap = malloc(numBytes);
- dibInfo->bmiHeader.biWidth = bmapWidth;
- dibInfo->bmiHeader.biHeight = bmapHeight;
- res = GetDIBits(bitDevice, bitObject, 0, bmapHeight, bmap,
- dibInfo,
- DIB_RGB_COLORS);
- //VERIFY(res);
-
- // Create the GL object
- glNewList(i + listBase, GL_COMPILE);
- glBitmap(bmapWidth, bmapHeight, 0.0, metric.tmDescent,
- charWidth, 0.0,
- bmap);
- glEndList();
- // CheckGL();
-
- // Destroy the bmap object
- DeleteObject(bitObject);
-
- // Deallocate the bitmap data
- free(bmap);
- }
-
- // Destroy the DC
- VERIFY(DeleteDC(bitDevice));
-
- free(dibInfo);
-
- return TRUE;
- #undef VERIFY
- }
-
- BOOL APIENTRY wglUseFontBitmapsW(HDC hdc,DWORD first,DWORD count,DWORD listBase)
- {
- return(FALSE);
- }
-
- BOOL APIENTRY wglUseFontOutlinesA(HDC hdc,DWORD first,DWORD count,
- DWORD listBase,FLOAT deviation,
- FLOAT extrusion,int format,
- LPGLYPHMETRICSFLOAT lpgmf)
- {
- SetLastError(0);
- return(FALSE);
- }
-
- BOOL APIENTRY wglUseFontOutlinesW(HDC hdc,DWORD first,DWORD count,
- DWORD listBase,FLOAT deviation,
- FLOAT extrusion,int format,
- LPGLYPHMETRICSFLOAT lpgmf)
- {
- SetLastError(0);
- return(FALSE);
- }
-
-
- BOOL APIENTRY wglSwapLayerBuffers(HDC hdc,UINT fuPlanes)
- {
- if(ctx && WindowFromDC(hdc) == hWND) {
- fxMesaSwapBuffers();
-
- return(TRUE);
- }
-
- SetLastError(0);
- return(FALSE);
- }
-
- int APIENTRY wglChoosePixelFormat(HDC hdc,
- CONST PIXELFORMATDESCRIPTOR *ppfd)
- {
- int i,best=-1,qt_valid_pix;
-
- qt_valid_pix = qt_pix;
-
- if(ppfd->nSize != sizeof(PIXELFORMATDESCRIPTOR) || ppfd->nVersion != 1) {
- SetLastError(0);
- return(0);
- }
-
- for(i = 0;i < qt_valid_pix;i++) {
- if((ppfd->dwFlags & PFD_DRAW_TO_WINDOW) && !(pix[i].pfd.dwFlags & PFD_DRAW_TO_WINDOW))
- continue;
- if((ppfd->dwFlags & PFD_DRAW_TO_BITMAP) && !(pix[i].pfd.dwFlags & PFD_DRAW_TO_BITMAP))
- continue;
- if((ppfd->dwFlags & PFD_SUPPORT_GDI) && !(pix[i].pfd.dwFlags & PFD_SUPPORT_GDI))
- continue;
- if((ppfd->dwFlags & PFD_SUPPORT_OPENGL) && !(pix[i].pfd.dwFlags & PFD_SUPPORT_OPENGL))
- continue;
- if(!(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE) &&
- ((ppfd->dwFlags & PFD_DOUBLEBUFFER) != (pix[i].pfd.dwFlags & PFD_DOUBLEBUFFER)))
- continue;
- if(!(ppfd->dwFlags & PFD_STEREO_DONTCARE) &&
- ((ppfd->dwFlags & PFD_STEREO) != (pix[i].pfd.dwFlags & PFD_STEREO)))
- continue;
-
- if (ppfd->cDepthBits > 0 && pix[i].pfd.cDepthBits == 0)
- continue; /* need depth buffer */
-
- if (ppfd->cAlphaBits > 0 && pix[i].pfd.cAlphaBits == 0)
- continue; /* need alpha buffer */
-
- if(ppfd->iPixelType == pix[i].pfd.iPixelType) {
- best = i + 1;
- break;
- }
- }
-
- if(best == -1) {
- SetLastError(0);
- return(0);
- }
-
- return(best);
- }
-
- int APIENTRY ChoosePixelFormat(HDC hdc,
- CONST PIXELFORMATDESCRIPTOR *ppfd)
- {
- return wglChoosePixelFormat(hdc,ppfd);
- }
-
- int APIENTRY wglDescribePixelFormat(HDC hdc,int iPixelFormat,UINT nBytes,
- LPPIXELFORMATDESCRIPTOR ppfd)
- {
- int qt_valid_pix;
-
- qt_valid_pix = qt_pix;
-
- if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix ||
- ((nBytes != sizeof(PIXELFORMATDESCRIPTOR)) && (nBytes != 0))) {
- SetLastError(0);
- return(0);
- }
-
- if(nBytes != 0)
- *ppfd = pix[iPixelFormat - 1].pfd;
-
- return(qt_valid_pix);
- }
-
- int APIENTRY DescribePixelFormat(HDC hdc,int iPixelFormat,UINT nBytes,
- LPPIXELFORMATDESCRIPTOR ppfd)
- {
- return wglDescribePixelFormat(hdc,iPixelFormat,nBytes,ppfd);
- }
-
- int APIENTRY wglGetPixelFormat(HDC hdc)
- {
- if(curPFD == 0) {
- SetLastError(0);
- return(0);
- }
-
- return(curPFD);
- }
-
- int APIENTRY GetPixelFormat(HDC hdc)
- {
- return wglGetPixelFormat(hdc);
- }
-
- BOOL APIENTRY wglSetPixelFormat(HDC hdc,int iPixelFormat,
- CONST PIXELFORMATDESCRIPTOR *ppfd)
- {
- int qt_valid_pix;
-
- qt_valid_pix = qt_pix;
-
- if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix || ppfd->nSize != sizeof(PIXELFORMATDESCRIPTOR)) {
- SetLastError(0);
- return(FALSE);
- }
- curPFD = iPixelFormat;
-
- return(TRUE);
- }
-
- BOOL APIENTRY wglSwapBuffers(HDC hdc)
- {
- if(!ctx) {
- SetLastError(0);
- return(FALSE);
- }
-
- fxMesaSwapBuffers();
-
- if(gdiWindowHack) {
- GLuint width=ctx->width;
- GLuint height=ctx->height;
-
- HDC hdcScreen = GetDC(dibWnd);
- HDC hdcDIBSection = CreateCompatibleDC(hdcScreen);
- HBITMAP holdBitmap = (HBITMAP) SelectObject(hdcDIBSection, dibHBM);
-
- grLfbReadRegion(GR_BUFFER_FRONTBUFFER, 0, 0,
- width, height,
- width * 2,
- dibSurfacePtr);
-
- /* Since the hardware is configured for GR_COLORFORMAT_ABGR the pixel data is
- * going to come out as BGR 565, which is reverse of what we need for blitting
- * to screen, so we need to convert it here pixel-by-pixel (ick). This loop would NOT
- * be required if the color format was changed to GR_COLORFORMAT_ARGB, but I do
- * not know the ramifications of that, so this will work until that is resolved.
- *
- * This routine CRIES out for MMX implementation, however since that's not
- * guaranteed to be running on MMX enabled hardware so I'm not going to do
- * that. I'm just going to try to make a reasonably efficient C
- * version. -TAJ
- *
- * This routine drops frame rate by <1 fps on a 200Mhz MMX processor with a 640x480
- * display. Obviously, it's performance hit will be higher on larger displays and
- * less on smaller displays. To support the window-hack display this is probably fine.
- */
- {
- unsigned long *pixel = dibSurfacePtr;
- unsigned long count = (width * height) / 2;
-
- while (count--)
- {
- *pixel++ = (*pixel & 0x07e007e0) /* greens */
- | ((*pixel & 0xf800f800) >> 11) /* swap blues */
- | ((*pixel & 0x001f001f) << 11) /* swap reds */
- ;
- }
- }
-
- BitBlt(hdcScreen, 0, 0,
- width, height,
- hdcDIBSection,
- 0, 0, SRCCOPY);
-
- ReleaseDC(dibWnd, hdcScreen);
- SelectObject(hdcDIBSection, holdBitmap);
- DeleteDC(hdcDIBSection);
- }
-
- return(TRUE);
- }
-
- BOOL APIENTRY SetPixelFormat(HDC hdc, int iPixelFormat,
- CONST PIXELFORMATDESCRIPTOR *ppfd)
- {
- return wglSetPixelFormat(hdc,iPixelFormat,ppfd);
- }
-
- BOOL APIENTRY SwapBuffers(HDC hdc)
- {
- return wglSwapBuffers(hdc);
- }
-
- #endif /* FX */
-