diff options
author | Karl Schultz <kschultz@freedesktop.org> | 2003-07-24 03:47:46 +0000 |
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committer | Karl Schultz <kschultz@freedesktop.org> | 2003-07-24 03:47:46 +0000 |
commit | b6a74a4f6e17dc95c5b3fed73f77fb9b7d9ea806 (patch) | |
tree | 44a469c54256a02ceb2e07d1551f126891056dfb /src/mesa/drivers/windows/gdi/wgl.c | |
parent | fbd052efedfe1a405ece5edf0b35dce48fa82f27 (diff) |
Source code for GDI driver.
Diffstat (limited to 'src/mesa/drivers/windows/gdi/wgl.c')
-rw-r--r-- | src/mesa/drivers/windows/gdi/wgl.c | 623 |
1 files changed, 623 insertions, 0 deletions
diff --git a/src/mesa/drivers/windows/gdi/wgl.c b/src/mesa/drivers/windows/gdi/wgl.c new file mode 100644 index 0000000000..bceaeb315e --- /dev/null +++ b/src/mesa/drivers/windows/gdi/wgl.c @@ -0,0 +1,623 @@ +/* $Id: wgl.c,v 1.1 2003/07/24 03:47:46 kschultz Exp $ */ + +/* +* 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. +* +*/ + +/* +* File name : wgl.c +* WGL stuff. Added by Oleg Letsinsky, ajl@ultersys.ru +* Some things originated from the 3Dfx WGL functions +*/ + +#ifdef WIN32 + +#ifdef __cplusplus +extern "C" { +#endif + +#include <windows.h> +#define GL_GLEXT_PROTOTYPES +#include <GL/gl.h> +#include <GL/glext.h> +//#include <GL/glu.h> + +#ifdef __cplusplus +} +#endif + +#include <stdio.h> +#include <tchar.h> +#include "wmesadef.h" +#include "GL/wmesa.h" +#include "mtypes.h" +#include "glapi.h" + +#define MAX_MESA_ATTRS 20 + +struct __pixelformat__ +{ + PIXELFORMATDESCRIPTOR pfd; + GLboolean doubleBuffered; +}; + +struct __pixelformat__ pix[] = +{ + /* Double Buffer, alpha */ + { { sizeof(PIXELFORMATDESCRIPTOR), 1, + PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_GENERIC_FORMAT|PFD_DOUBLEBUFFER|PFD_SWAP_COPY, + PFD_TYPE_RGBA, + 24, 8, 0, 8, 8, 8, 16, 8, 24, + 0, 0, 0, 0, 0, 16, 8, 0, 0, 0, 0, 0, 0 }, + GL_TRUE + }, + /* Single Buffer, alpha */ + { { sizeof(PIXELFORMATDESCRIPTOR), 1, + PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_GENERIC_FORMAT, + PFD_TYPE_RGBA, + 24, 8, 0, 8, 8, 8, 16, 8, 24, + 0, 0, 0, 0, 0, 16, 8, 0, 0, 0, 0, 0, 0 }, + GL_FALSE + }, + /* Double Buffer, no alpha */ + { { sizeof(PIXELFORMATDESCRIPTOR), 1, + PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_GENERIC_FORMAT|PFD_DOUBLEBUFFER|PFD_SWAP_COPY, + PFD_TYPE_RGBA, + 24, 8, 0, 8, 8, 8, 16, 0, 0, + 0, 0, 0, 0, 0, 16, 8, 0, 0, 0, 0, 0, 0 }, + GL_TRUE + }, + /* Single Buffer, no alpha */ + { { sizeof(PIXELFORMATDESCRIPTOR), 1, + PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_GENERIC_FORMAT, + PFD_TYPE_RGBA, + 24, 8, 0, 8, 8, 8, 16, 0, 0, + 0, 0, 0, 0, 0, 16, 8, 0, 0, 0, 0, 0, 0 }, + GL_FALSE + }, +}; + +int qt_pix = sizeof(pix) / sizeof(pix[0]); + +typedef struct { + WMesaContext ctx; + HDC hdc; +} MesaWglCtx; + +#define MESAWGL_CTX_MAX_COUNT 20 + +static MesaWglCtx wgl_ctx[MESAWGL_CTX_MAX_COUNT]; + +static unsigned ctx_count = 0; +static unsigned ctx_current = -1; +static unsigned curPFD = 0; + +WGLAPI BOOL GLAPIENTRY wglCopyContext(HGLRC hglrcSrc,HGLRC hglrcDst,UINT mask) +{ + return(FALSE); +} + +WGLAPI HGLRC GLAPIENTRY wglCreateContext(HDC hdc) +{ + HWND hWnd; + int i = 0; + if(!(hWnd = WindowFromDC(hdc))) + { + SetLastError(0); + return(NULL); + } + if (!ctx_count) + { + for(i=0;i<MESAWGL_CTX_MAX_COUNT;i++) + { + wgl_ctx[i].ctx = NULL; + wgl_ctx[i].hdc = NULL; + } + } + for( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ ) + { + if ( wgl_ctx[i].ctx == NULL ) + { + wgl_ctx[i].ctx = WMesaCreateContext( hWnd, NULL, GL_TRUE, + pix[curPFD-1].doubleBuffered, + pix[curPFD-1].pfd.cAlphaBits ? GL_TRUE : GL_FALSE); + if (wgl_ctx[i].ctx == NULL) + break; + wgl_ctx[i].hdc = hdc; + ctx_count++; + return ((HGLRC)wgl_ctx[i].ctx); + } + } + SetLastError(0); + return(NULL); +} + +WGLAPI BOOL GLAPIENTRY wglDeleteContext(HGLRC hglrc) +{ + int i; + for ( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ ) + { + if ( wgl_ctx[i].ctx == (PWMC) hglrc ) + { + WMesaMakeCurrent((PWMC) hglrc); + WMesaDestroyContext(); + wgl_ctx[i].ctx = NULL; + wgl_ctx[i].hdc = NULL; + ctx_count--; + return(TRUE); + } + } + SetLastError(0); + return(FALSE); +} + +WGLAPI HGLRC GLAPIENTRY wglCreateLayerContext(HDC hdc,int iLayerPlane) +{ + SetLastError(0); + return(NULL); +} + +WGLAPI HGLRC GLAPIENTRY wglGetCurrentContext(VOID) +{ + if (ctx_current < 0) + return 0; + else + return (HGLRC) wgl_ctx[ctx_current].ctx; +} + +WGLAPI HDC GLAPIENTRY wglGetCurrentDC(VOID) +{ + if (ctx_current < 0) + return 0; + else + return wgl_ctx[ctx_current].hdc; +} + +WGLAPI BOOL GLAPIENTRY wglMakeCurrent(HDC hdc,HGLRC hglrc) +{ + int i; + + /* new code suggested by Andy Sy */ + if (!hdc || !hglrc) { + WMesaMakeCurrent(NULL); + ctx_current = -1; + return TRUE; + } + + for ( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ ) + { + if ( wgl_ctx[i].ctx == (PWMC) hglrc ) + { + wgl_ctx[i].hdc = hdc; + WMesaMakeCurrent( (WMesaContext) hglrc ); + ctx_current = i; + return TRUE; + } + } + return FALSE; +} + +WGLAPI BOOL GLAPIENTRY wglShareLists(HGLRC hglrc1,HGLRC hglrc2) +{ + return(TRUE); +} + + +static FIXED FixedFromDouble(double d) +{ + long l = (long) (d * 65536L); + return *(FIXED *)&l; +} + + +/* +** This is cribbed from FX/fxwgl.c, and seems to implement support +** for bitmap fonts where the wglUseFontBitmapsA() code implements +** support for outline fonts. In combination they hopefully give +** fairly generic support for fonts. +*/ +static BOOL wglUseFontBitmaps_FX(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 ? 1 : 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 +} + +WGLAPI BOOL GLAPIENTRY wglUseFontBitmapsA(HDC hdc, DWORD first, + DWORD count, DWORD listBase) +{ + int i; + GLuint font_list; + DWORD size; + GLYPHMETRICS gm; + HANDLE hBits; + LPSTR lpBits; + MAT2 mat; + int success = TRUE; + + if (first<0) + return FALSE; + if (count<0) + return FALSE; + if (listBase<0) + return FALSE; + + font_list = listBase; + + mat.eM11 = FixedFromDouble(1); + mat.eM12 = FixedFromDouble(0); + mat.eM21 = FixedFromDouble(0); + mat.eM22 = FixedFromDouble(-1); + + memset(&gm,0,sizeof(gm)); + + /* + ** If we can't get the glyph outline, it may be because this is a fixed + ** font. Try processing it that way. + */ + if( GetGlyphOutline(hdc, first, GGO_BITMAP, &gm, 0, NULL, &mat) + == GDI_ERROR ) + { + return wglUseFontBitmaps_FX( hdc, first, count, listBase ); + } + + /* + ** Otherwise process all desired characters. + */ + for (i = 0; i < count; i++) + { + DWORD err; + + glNewList( font_list+i, GL_COMPILE ); + + /* allocate space for the bitmap/outline */ + size = GetGlyphOutline(hdc, first + i, GGO_BITMAP, &gm, 0, NULL, &mat); + if (size == GDI_ERROR) + { + glEndList( ); + err = GetLastError(); + success = FALSE; + continue; + } + + hBits = GlobalAlloc(GHND, size+1); + lpBits = GlobalLock(hBits); + + err = + GetGlyphOutline(hdc, /* handle to device context */ + first + i, /* character to query */ + GGO_BITMAP, /* format of data to return */ + &gm, /* pointer to structure for metrics*/ + size, /* size of buffer for data */ + lpBits, /* pointer to buffer for data */ + &mat /* pointer to transformation */ + /* matrix structure */ + ); + + if (err == GDI_ERROR) + { + GlobalUnlock(hBits); + GlobalFree(hBits); + + glEndList( ); + err = GetLastError(); + success = FALSE; + continue; + } + + glBitmap(gm.gmBlackBoxX,gm.gmBlackBoxY, + -gm.gmptGlyphOrigin.x, + gm.gmptGlyphOrigin.y, + gm.gmCellIncX,gm.gmCellIncY, + (const GLubyte * )lpBits); + + GlobalUnlock(hBits); + GlobalFree(hBits); + + glEndList( ); + } + + return success; +} + + +WGLAPI BOOL GLAPIENTRY wglUseFontBitmapsW(HDC hdc,DWORD first,DWORD count,DWORD listBase) +{ + return FALSE; +} + +WGLAPI BOOL GLAPIENTRY wglUseFontOutlinesA(HDC hdc,DWORD first,DWORD count, + DWORD listBase,FLOAT deviation, + FLOAT extrusion,int format, + LPGLYPHMETRICSFLOAT lpgmf) +{ + SetLastError(0); + return(FALSE); +} + +WGLAPI BOOL GLAPIENTRY wglUseFontOutlinesW(HDC hdc,DWORD first,DWORD count, + DWORD listBase,FLOAT deviation, + FLOAT extrusion,int format, + LPGLYPHMETRICSFLOAT lpgmf) +{ + SetLastError(0); + return(FALSE); +} + +WGLAPI BOOL GLAPIENTRY wglDescribeLayerPlane(HDC hdc,int iPixelFormat, + int iLayerPlane,UINT nBytes, + LPLAYERPLANEDESCRIPTOR plpd) +{ + SetLastError(0); + return(FALSE); +} + +WGLAPI int GLAPIENTRY wglSetLayerPaletteEntries(HDC hdc,int iLayerPlane, + int iStart,int cEntries, + CONST COLORREF *pcr) +{ + SetLastError(0); + return(0); +} + +WGLAPI int GLAPIENTRY wglGetLayerPaletteEntries(HDC hdc,int iLayerPlane, + int iStart,int cEntries, + COLORREF *pcr) +{ + SetLastError(0); + return(0); +} + +WGLAPI BOOL GLAPIENTRY wglRealizeLayerPalette(HDC hdc,int iLayerPlane,BOOL bRealize) +{ + SetLastError(0); + return(FALSE); +} + +WGLAPI BOOL GLAPIENTRY wglSwapLayerBuffers(HDC hdc,UINT fuPlanes) +{ + if( !hdc ) + { + WMesaSwapBuffers(); + return(TRUE); + } + SetLastError(0); + return(FALSE); +} + +WGLAPI int GLAPIENTRY wglChoosePixelFormat(HDC hdc, + CONST PIXELFORMATDESCRIPTOR *ppfd) +{ + int i,best = -1,bestdelta = 0x7FFFFFFF,delta,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++) + { + delta = 0; + 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->iPixelType != pix[i].pfd.iPixelType) + delta++; + if(ppfd->cAlphaBits != pix[i].pfd.cAlphaBits) + delta++; + if(delta < bestdelta) + { + best = i + 1; + bestdelta = delta; + if(bestdelta == 0) + break; + } + } + if(best == -1) + { + SetLastError(0); + return(0); + } + return(best); +} + +WGLAPI int GLAPIENTRY wglDescribePixelFormat(HDC hdc,int iPixelFormat,UINT nBytes, + LPPIXELFORMATDESCRIPTOR ppfd) +{ + int qt_valid_pix; + + qt_valid_pix = qt_pix; + if(ppfd == NULL) + return(qt_valid_pix); + if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix || nBytes != sizeof(PIXELFORMATDESCRIPTOR)) + { + SetLastError(0); + return(0); + } + *ppfd = pix[iPixelFormat - 1].pfd; + return(qt_valid_pix); +} + +/* +* GetProcAddress - return the address of an appropriate extension +*/ +WGLAPI PROC GLAPIENTRY wglGetProcAddress(LPCSTR lpszProc) +{ + PROC p = (PROC) _glapi_get_proc_address((const char *) lpszProc); + if (p) + return p; + + SetLastError(0); + return(NULL); +} + +WGLAPI int GLAPIENTRY wglGetPixelFormat(HDC hdc) +{ + if(curPFD == 0) + { + SetLastError(0); + return(0); + } + return(curPFD); +} + +WGLAPI BOOL GLAPIENTRY wglSetPixelFormat(HDC hdc,int iPixelFormat, + 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); +} + +WGLAPI BOOL GLAPIENTRY wglSwapBuffers(HDC hdc) +{ + if (ctx_current < 0) + return FALSE; + + if(wgl_ctx[ctx_current].ctx == NULL) { + SetLastError(0); + return(FALSE); + } + WMesaSwapBuffers(); + return(TRUE); +} + +#endif /* WIN32 */ |