diff options
Diffstat (limited to 'src/mesa/drivers/windows/gldirect/dglwgl.c')
| -rw-r--r-- | src/mesa/drivers/windows/gldirect/dglwgl.c | 2958 |
1 files changed, 2958 insertions, 0 deletions
diff --git a/src/mesa/drivers/windows/gldirect/dglwgl.c b/src/mesa/drivers/windows/gldirect/dglwgl.c new file mode 100644 index 00000000000..a1b7e5dce0e --- /dev/null +++ b/src/mesa/drivers/windows/gldirect/dglwgl.c @@ -0,0 +1,2958 @@ +/**************************************************************************** +* +* Mesa 3-D graphics library +* Direct3D Driver Interface +* +* ======================================================================== +* +* Copyright (C) 1991-2004 SciTech Software, Inc. All rights reserved. +* +* Permission is hereby granted, free of charge, to any person obtaining a +* copy of this software and associated documentation files (the "Software"), +* to deal in the Software without restriction, including without limitation +* the rights to use, copy, modify, merge, publish, distribute, sublicense, +* and/or sell copies of the Software, and to permit persons to whom the +* Software is furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included +* in all copies or substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +* SCITECH SOFTWARE INC BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF +* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +* SOFTWARE. +* +* ====================================================================== +* +* Language: ANSI C +* Environment: Windows 9x (Win32) +* +* Description: OpenGL window functions (wgl*). +* +****************************************************************************/ + +#include "dglwgl.h" +#ifdef _USE_GLD3_WGL +#include "gld_driver.h" +#endif + +#include "glu.h" // MUST USE MICROSOFT'S GLU32! + +#ifndef _USE_GLD3_WGL +extern DGL_mesaFuncs mesaFuncs; +#endif + +// Need to export wgl* functions if using GLD3, +// otherwise export GLD2 DGL_* functions. +#ifdef _USE_GLD3_WGL +#define _GLD_WGL_EXPORT(a) wgl##a +#else +#define _GLD_WGL_EXPORT(a) DGL_##a +#endif + +// Calls into Mesa 4.x are different +#ifdef _USE_GLD3_WGL +#include "dlist.h" +#include "drawpix.h" +#include "get.h" +#include "matrix.h" +// NOTE: All the _GLD* macros now call the gl* functions direct. +// This ensures that the correct internal pathway is taken. KeithH +#define _GLD_glNewList glNewList +#define _GLD_glBitmap glBitmap +#define _GLD_glEndList glEndList +#define _GLD_glDeleteLists glDeleteLists +#define _GLD_glGetError glGetError +#define _GLD_glTranslatef glTranslatef +#define _GLD_glBegin glBegin +#define _GLD_glVertex2fv glVertex2fv +#define _GLD_glEnd glEnd +#define _GLD_glNormal3f glNormal3f +#define _GLD_glVertex3f glVertex3f +#define _GLD_glVertex3fv glVertex3fv +#else // _USE_GLD3_WGL +#define _GLD_glNewList (*mesaFuncs.glNewList) +#define _GLD_glBitmap (*mesaFuncs.glBitmap) +#define _GLD_glEndList (*mesaFuncs.glEndList) +#define _GLD_glDeleteLists (*mesaFuncs.glDeleteLists) +#define _GLD_glGetError (*mesaFuncs.glGetError) +#define _GLD_glTranslatef (*mesaFuncs.glTranslatef) +#define _GLD_glBegin (*mesaFuncs.glBegin) +#define _GLD_glVertex2fv (*mesaFuncs.glVertex2fv) +#define _GLD_glEnd (*mesaFuncs.glEnd) +#define _GLD_glNormal3f (*mesaFuncs.glNormal3f) +#define _GLD_glVertex3f (*mesaFuncs.glVertex3f) +#define _GLD_glVertex3fv (*mesaFuncs.glVertex3fv) +#endif // _USE_GLD3_WGL + +// *********************************************************************** + +// Emulate SGI DDK calls. +#define __wglMalloc(a) GlobalAlloc(GPTR, (a)) +#define __wglFree(a) GlobalFree((a)) + +// *********************************************************************** + +// Mesa glu.h and MS glu.h call these different things... +//#define GLUtesselator GLUtriangulatorObj +//#define GLU_TESS_VERTEX_DATA GLU_VERTEX_DATA + +// For wglFontOutlines + +typedef GLUtesselator *(APIENTRY *gluNewTessProto)(void); +typedef void (APIENTRY *gluDeleteTessProto)(GLUtesselator *tess); +typedef void (APIENTRY *gluTessBeginPolygonProto)(GLUtesselator *tess, void *polygon_data); +typedef void (APIENTRY *gluTessBeginContourProto)(GLUtesselator *tess); +typedef void (APIENTRY *gluTessVertexProto)(GLUtesselator *tess, GLdouble coords[3], void *data); +typedef void (APIENTRY *gluTessEndContourProto)(GLUtesselator *tess); +typedef void (APIENTRY *gluTessEndPolygonProto)(GLUtesselator *tess); +typedef void (APIENTRY *gluTessPropertyProto)(GLUtesselator *tess, GLenum which, GLdouble value); +typedef void (APIENTRY *gluTessNormalProto)(GLUtesselator *tess, GLdouble x, GLdouble y, GLdouble z); +typedef void (APIENTRY *gluTessCallbackProto)(GLUtesselator *tess, GLenum which, void (CALLBACK *)()); + +static HINSTANCE gluModuleHandle; +static gluNewTessProto gluNewTessProc; +static gluDeleteTessProto gluDeleteTessProc; +static gluTessBeginPolygonProto gluTessBeginPolygonProc; +static gluTessBeginContourProto gluTessBeginContourProc; +static gluTessVertexProto gluTessVertexProc; +static gluTessEndContourProto gluTessEndContourProc; +static gluTessEndPolygonProto gluTessEndPolygonProc; +static gluTessPropertyProto gluTessPropertyProc; +static gluTessNormalProto gluTessNormalProc; +static gluTessCallbackProto gluTessCallbackProc; + +static HFONT hNewFont, hOldFont; +static FLOAT ScaleFactor; + +#define LINE_BUF_QUANT 4000 +#define VERT_BUF_QUANT 4000 + +static FLOAT* LineBuf; +static DWORD LineBufSize; +static DWORD LineBufIndex; +static FLOAT* VertBuf; +static DWORD VertBufSize; +static DWORD VertBufIndex; +static GLenum TessErrorOccurred; + +static int AppendToLineBuf( + FLOAT value); + +static int AppendToVertBuf( + FLOAT value); + +static int DrawGlyph( + UCHAR* glyphBuf, + DWORD glyphSize, + FLOAT chordalDeviation, + FLOAT extrusion, + INT format); + +static void FreeLineBuf(void); + +static void FreeVertBuf(void); + +static long GetWord( + UCHAR** p); + +static long GetDWord( + UCHAR** p); + +static double GetFixed( + UCHAR** p); + +static int InitLineBuf(void); + +static int InitVertBuf(void); + +static HFONT CreateHighResolutionFont( + HDC hDC); + +static int MakeDisplayListFromGlyph( + DWORD listName, + UCHAR* glyphBuf, + DWORD glyphSize, + LPGLYPHMETRICSFLOAT glyphMetricsFloat, + FLOAT chordalDeviation, + FLOAT extrusion, + INT format); + +static BOOL LoadGLUTesselator(void); +static BOOL UnloadGLUTesselator(void); + +static int MakeLinesFromArc( + FLOAT x0, + FLOAT y0, + FLOAT x1, + FLOAT y1, + FLOAT x2, + FLOAT y2, + DWORD vertexCountIndex, + FLOAT chordalDeviationSquared); + +static int MakeLinesFromGlyph( UCHAR* glyphBuf, + DWORD glyphSize, + FLOAT chordalDeviation); + +static int MakeLinesFromTTLine( UCHAR** pp, + DWORD vertexCountIndex, + WORD pointCount); + +static int MakeLinesFromTTPolycurve( UCHAR** pp, + DWORD vertexCountIndex, + FLOAT chordalDeviation); + +static int MakeLinesFromTTPolygon( UCHAR** pp, + FLOAT chordalDeviation); + +static int MakeLinesFromTTQSpline( UCHAR** pp, + DWORD vertexCountIndex, + WORD pointCount, + FLOAT chordalDeviation); + +static void CALLBACK TessCombine( double coords[3], + void* vertex_data[4], + FLOAT weight[4], + void** outData); + +static void CALLBACK TessError( GLenum error); + +static void CALLBACK TessVertexOutData( FLOAT p[3], + GLfloat z); + +// *********************************************************************** + +#ifdef GLD_THREADS +#pragma message("compiling DGLWGL.C vars for multi-threaded support") +extern CRITICAL_SECTION CriticalSection; +extern DWORD dwTLSPixelFormat; // TLS index for current pixel format +#endif +int curPFD = 0; // Current PFD (static) + +// *********************************************************************** + +int dglGetPixelFormat(void) +{ +#ifdef GLD_THREADS + int iPixelFormat; + // get thread-specific instance + if (glb.bMultiThreaded) { + __try { + iPixelFormat = (int)TlsGetValue(dwTLSPixelFormat); + } + __except(EXCEPTION_EXECUTE_HANDLER) { + iPixelFormat = curPFD; + } + } + // get global static var + else { + iPixelFormat = curPFD; + } + return iPixelFormat; +#else + return curPFD; +#endif +} + +// *********************************************************************** + +void dglSetPixelFormat(int iPixelFormat) +{ +#ifdef GLD_THREADS + // set thread-specific instance + if (glb.bMultiThreaded) { + __try { + TlsSetValue(dwTLSPixelFormat, (LPVOID)iPixelFormat); + } + __except(EXCEPTION_EXECUTE_HANDLER) { + curPFD = iPixelFormat; + } + } + // set global static var + else { + curPFD = iPixelFormat; + } +#else + curPFD = iPixelFormat; +#endif +} + +// *********************************************************************** + +int APIENTRY _GLD_WGL_EXPORT(ChoosePixelFormat)( + HDC a, + CONST PIXELFORMATDESCRIPTOR *ppfd) +{ + DGL_pixelFormat *lpPF = glb.lpPF; + + PIXELFORMATDESCRIPTOR ppfdBest; + int i; + int bestIndex = -1; + int numPixelFormats; + DWORD dwFlags; + + char buf[128]; + char cat[8]; + + DWORD dwAllFlags = + PFD_DRAW_TO_WINDOW | + PFD_DRAW_TO_BITMAP | + PFD_SUPPORT_GDI | + PFD_SUPPORT_OPENGL | + PFD_GENERIC_FORMAT | + PFD_NEED_PALETTE | + PFD_NEED_SYSTEM_PALETTE | + PFD_DOUBLEBUFFER | + PFD_STEREO | + /*PFD_SWAP_LAYER_BUFFERS |*/ + PFD_DOUBLEBUFFER_DONTCARE | + PFD_STEREO_DONTCARE | + PFD_SWAP_COPY | + PFD_SWAP_EXCHANGE | + PFD_GENERIC_ACCELERATED | + 0; + + // Validate license + if (!dglValidate()) + return 0; + + // List may not be built until dglValidate() is called! KeithH + lpPF = glb.lpPF; + + // + // Lets print the input pixel format to the log + // ** Based on "wglinfo" by Nate Robins ** + // + ddlogMessage(DDLOG_SYSTEM, "ChoosePixelFormat:\n"); + ddlogMessage(DDLOG_INFO, "Input pixel format for ChoosePixelFormat:\n"); + ddlogMessage(DDLOG_INFO, + " visual x bf lv rg d st r g b a ax dp st accum buffs ms\n"); + ddlogMessage(DDLOG_INFO, + " id dep cl sp sz l ci b ro sz sz sz sz bf th cl r g b a ns b\n"); + ddlogMessage(DDLOG_INFO, + "-----------------------------------------------------------------\n"); + sprintf(buf, " . "); + + sprintf(cat, "%2d ", ppfd->cColorBits); + strcat(buf, cat); + if(ppfd->dwFlags & PFD_DRAW_TO_WINDOW) sprintf(cat, "wn "); + else if(ppfd->dwFlags & PFD_DRAW_TO_BITMAP) sprintf(cat, "bm "); + else sprintf(cat, ". "); + strcat(buf, cat); + + /* should find transparent pixel from LAYERPLANEDESCRIPTOR */ + sprintf(cat, " . "); + strcat(buf, cat); + + sprintf(cat, "%2d ", ppfd->cColorBits); + strcat(buf, cat); + + /* bReserved field indicates number of over/underlays */ + if(ppfd->bReserved) sprintf(cat, " %d ", ppfd->bReserved); + else sprintf(cat, " . "); + strcat(buf, cat); + + sprintf(cat, " %c ", ppfd->iPixelType == PFD_TYPE_RGBA ? 'r' : 'c'); + strcat(buf, cat); + + sprintf(cat, "%c ", ppfd->dwFlags & PFD_DOUBLEBUFFER ? 'y' : '.'); + strcat(buf, cat); + + sprintf(cat, " %c ", ppfd->dwFlags & PFD_STEREO ? 'y' : '.'); + strcat(buf, cat); + + if(ppfd->cRedBits && ppfd->iPixelType == PFD_TYPE_RGBA) + sprintf(cat, "%2d ", ppfd->cRedBits); + else sprintf(cat, " . "); + strcat(buf, cat); + + if(ppfd->cGreenBits && ppfd->iPixelType == PFD_TYPE_RGBA) + sprintf(cat, "%2d ", ppfd->cGreenBits); + else sprintf(cat, " . "); + strcat(buf, cat); + + if(ppfd->cBlueBits && ppfd->iPixelType == PFD_TYPE_RGBA) + sprintf(cat, "%2d ", ppfd->cBlueBits); + else sprintf(cat, " . "); + strcat(buf, cat); + + if(ppfd->cAlphaBits && ppfd->iPixelType == PFD_TYPE_RGBA) + sprintf(cat, "%2d ", ppfd->cAlphaBits); + else sprintf(cat, " . "); + strcat(buf, cat); + + if(ppfd->cAuxBuffers) sprintf(cat, "%2d ", ppfd->cAuxBuffers); + else sprintf(cat, " . "); + strcat(buf, cat); + + if(ppfd->cDepthBits) sprintf(cat, "%2d ", ppfd->cDepthBits); + else sprintf(cat, " . "); + strcat(buf, cat); + + if(ppfd->cStencilBits) sprintf(cat, "%2d ", ppfd->cStencilBits); + else sprintf(cat, " . "); + strcat(buf, cat); + + if(ppfd->cAccumRedBits) sprintf(cat, "%2d ", ppfd->cAccumRedBits); + else sprintf(cat, " . "); + strcat(buf, cat); + + if(ppfd->cAccumGreenBits) sprintf(cat, "%2d ", ppfd->cAccumGreenBits); + else sprintf(cat, " . "); + strcat(buf, cat); + + if(ppfd->cAccumBlueBits) sprintf(cat, "%2d ", ppfd->cAccumBlueBits); + else sprintf(cat, " . "); + strcat(buf, cat); + + if(ppfd->cAccumAlphaBits) sprintf(cat, "%2d ", ppfd->cAccumAlphaBits); + else sprintf(cat, " . "); + strcat(buf, cat); + + /* no multisample in Win32 */ + sprintf(cat, " . .\n"); + strcat(buf, cat); + + ddlogMessage(DDLOG_INFO, buf); + ddlogMessage(DDLOG_INFO, + "-----------------------------------------------------------------\n"); + ddlogMessage(DDLOG_INFO, "\n"); + + // + // Examine the flags for correctness + // + dwFlags = ppfd->dwFlags; + if (dwFlags != (dwFlags & dwAllFlags)) + { + /* error: bad dwFlags */ + ddlogPrintf(DDLOG_WARN, + "ChoosePixelFormat: bad flags (0x%x)", + dwFlags & (~dwAllFlags)); + // Mask illegal flags and continue + dwFlags = dwFlags & dwAllFlags; + } + + switch (ppfd->iPixelType) { + case PFD_TYPE_RGBA: + case PFD_TYPE_COLORINDEX: + break; + default: + /* error: bad iPixelType */ + ddlogMessage(DDLOG_WARN, "ChoosePixelFormat: bad pixel type\n"); + return 0; + } + + switch (ppfd->iLayerType) { + case PFD_MAIN_PLANE: + case PFD_OVERLAY_PLANE: + case PFD_UNDERLAY_PLANE: + break; + default: + /* error: bad iLayerType */ + ddlogMessage(DDLOG_WARN, "ChoosePixelFormat: bad layer type\n"); + return 0; + } + + numPixelFormats = glb.nPixelFormatCount; + + /* loop through candidate pixel format descriptors */ + for (i=0; i<numPixelFormats; ++i) { + PIXELFORMATDESCRIPTOR ppfdCandidate; + + memcpy(&ppfdCandidate, &lpPF[i].pfd, sizeof(PIXELFORMATDESCRIPTOR)); + + /* + ** Check attributes which must match + */ + if (ppfd->iPixelType != ppfdCandidate.iPixelType) { + continue; + } + + if (ppfd->iLayerType != ppfdCandidate.iLayerType) { + continue; + } + + if (((dwFlags ^ ppfdCandidate.dwFlags) & dwFlags) & + (PFD_DRAW_TO_WINDOW | PFD_DRAW_TO_BITMAP | + PFD_SUPPORT_GDI | PFD_SUPPORT_OPENGL)) + { + continue; + } + + if (!(dwFlags & PFD_DOUBLEBUFFER_DONTCARE)) { + if ((dwFlags & PFD_DOUBLEBUFFER) != + (ppfdCandidate.dwFlags & PFD_DOUBLEBUFFER)) + { + continue; + } + } + +// if (!(dwFlags & PFD_STEREO_DONTCARE)) { + if ((dwFlags & PFD_STEREO) != + (ppfdCandidate.dwFlags & PFD_STEREO)) + { + continue; + } +// } + + if (ppfd->iPixelType==PFD_TYPE_RGBA + && ppfd->cAlphaBits && !ppfdCandidate.cAlphaBits) { + continue; + } + + if (ppfd->iPixelType==PFD_TYPE_RGBA + && ppfd->cAccumBits && !ppfdCandidate.cAccumBits) { + continue; + } + + if (ppfd->cDepthBits && !ppfdCandidate.cDepthBits) { + continue; + } + + if (ppfd->cStencilBits && !ppfdCandidate.cStencilBits) { + continue; + } + + if (ppfd->cAuxBuffers && !ppfdCandidate.cAuxBuffers) { + continue; + } + + /* + ** See if candidate is better than the previous best choice + */ + if (bestIndex == -1) { + ppfdBest = ppfdCandidate; + bestIndex = i; + continue; + } + + if ((ppfd->cColorBits > ppfdBest.cColorBits && + ppfdCandidate.cColorBits > ppfdBest.cColorBits) || + (ppfd->cColorBits <= ppfdCandidate.cColorBits && + ppfdCandidate.cColorBits < ppfdBest.cColorBits)) + { + ppfdBest = ppfdCandidate; + bestIndex = i; + continue; + } + + if (ppfd->iPixelType==PFD_TYPE_RGBA + && ppfd->cAlphaBits + && ppfdCandidate.cAlphaBits > ppfdBest.cAlphaBits) + { + ppfdBest = ppfdCandidate; + bestIndex = i; + continue; + } + + if (ppfd->iPixelType==PFD_TYPE_RGBA + && ppfd->cAccumBits + && ppfdCandidate.cAccumBits > ppfdBest.cAccumBits) + { + ppfdBest = ppfdCandidate; + bestIndex = i; + continue; + } + + if ((ppfd->cDepthBits > ppfdBest.cDepthBits && + ppfdCandidate.cDepthBits > ppfdBest.cDepthBits) || + (ppfd->cDepthBits <= ppfdCandidate.cDepthBits && + ppfdCandidate.cDepthBits < ppfdBest.cDepthBits)) + { + ppfdBest = ppfdCandidate; + bestIndex = i; + continue; + } + + if (ppfd->cStencilBits && + ppfdCandidate.cStencilBits > ppfdBest.cStencilBits) + { + ppfdBest = ppfdCandidate; + bestIndex = i; + continue; + } + + if (ppfd->cAuxBuffers && + ppfdCandidate.cAuxBuffers > ppfdBest.cAuxBuffers) + { + ppfdBest = ppfdCandidate; + bestIndex = i; + continue; + } + } + + if (bestIndex != -1) { + ddlogPrintf(DDLOG_SYSTEM, "Pixel Format %d chosen as best match", bestIndex+1); + return bestIndex + 1; + } + + // Return the pixelformat that has the most capabilities. + // ** NOTE: This is only possible due to the way the list + // of pixelformats is built. ** + // Now picks best pixelformat. KeithH + bestIndex = numPixelFormats; // most capable double buffer format + ddlogPrintf(DDLOG_SYSTEM, "Pixel Format %d chosen by default", bestIndex); + return (bestIndex); +} + +// *********************************************************************** + +BOOL APIENTRY _GLD_WGL_EXPORT(CopyContext)( + HGLRC a, + HGLRC b, + UINT c) +{ + // Validate license + if (!dglValidate()) + return FALSE; + UNSUPPORTED("wglCopyContext") + return FALSE; // Failed +} + +// *********************************************************************** + +HGLRC APIENTRY _GLD_WGL_EXPORT(CreateContext)( + HDC a) +{ + int ipf; + + // Validate license + if (!dglValidate()) + return 0; + + // Check that the current PFD is valid + ipf = dglGetPixelFormat(); + if (!IsValidPFD(ipf)) + return (HGLRC)0; + + return dglCreateContext(a, &glb.lpPF[ipf-1]); +} + +// *********************************************************************** + +HGLRC APIENTRY _GLD_WGL_EXPORT(CreateLayerContext)( + HDC a, + int b) +{ + // Validate license + if (!dglValidate()) + return 0; + + UNSUPPORTED("wglCreateLayerContext") + return NULL; // Failed +} + +// *********************************************************************** + +BOOL APIENTRY _GLD_WGL_EXPORT(DeleteContext)( + HGLRC a) +{ + // Validate license + if (!dglValidate()) + return FALSE; + + return dglDeleteContext(a); +} + +// *********************************************************************** + +BOOL APIENTRY _GLD_WGL_EXPORT(DescribeLayerPlane)( + HDC hDC, + int iPixelFormat, + int iLayerPlane, + UINT nBytes, + LPLAYERPLANEDESCRIPTOR plpd) +{ + // Validate license + if (!dglValidate()) + return FALSE; + + UNSUPPORTED("DGL_DescribeLayerPlane") + +// gldLogPrintf(GLDLOG_INFO, "DescribeLayerPlane: %d, %d", iPixelFormat, iLayerPlane); + + return FALSE; +} + +// *********************************************************************** + +int APIENTRY _GLD_WGL_EXPORT(DescribePixelFormat)( + HDC a, + int b, + UINT c, + LPPIXELFORMATDESCRIPTOR d) +{ + UINT nSize; + + // Validate license + if (!dglValidate()) + return 0; + + if (d == NULL) // Calling app requires max number of PF's + return glb.nPixelFormatCount; + + // The supplied buffer may be larger than the info that we + // will be copying. + if (c > sizeof(PIXELFORMATDESCRIPTOR)) + nSize = sizeof(PIXELFORMATDESCRIPTOR); + else + nSize = c; + + // Setup an empty PFD before doing validation check + memset(d, 0, nSize); + d->nSize = nSize; + d->nVersion = 1; + + if (!IsValidPFD(b)) + return 0; // Bail if PFD index is invalid + + memcpy(d, &glb.lpPF[b-1].pfd, nSize); + + return glb.nPixelFormatCount; +} + +// *********************************************************************** + +HGLRC APIENTRY _GLD_WGL_EXPORT(GetCurrentContext)(void) +{ + // Validate license + if (!dglValidate()) + return 0; + + return dglGetCurrentContext(); +} + +// *********************************************************************** + +HDC APIENTRY _GLD_WGL_EXPORT(GetCurrentDC)(void) +{ + // Validate license + if (!dglValidate()) + return 0; + + return dglGetCurrentDC(); +} + +// *********************************************************************** + +PROC APIENTRY _GLD_WGL_EXPORT(GetDefaultProcAddress)( + LPCSTR a) +{ + // Validate license + if (!dglValidate()) + return NULL; + + UNSUPPORTED("DGL_GetDefaultProcAddress") + return NULL; +} + +// *********************************************************************** + +int APIENTRY _GLD_WGL_EXPORT(GetLayerPaletteEntries)( + HDC a, + int b, + int c, + int d, + COLORREF *e) +{ + // Validate license + if (!dglValidate()) + return 0; + + UNSUPPORTED("DGL_GetLayerPaletteEntries") + return 0; +} + +// *********************************************************************** + +int APIENTRY _GLD_WGL_EXPORT(GetPixelFormat)( + HDC a) +{ + // Validate license + if (!dglValidate()) + return 0; + + return dglGetPixelFormat(); +} + +// *********************************************************************** + +PROC APIENTRY _GLD_WGL_EXPORT(GetProcAddress)( + LPCSTR a) +{ + PROC dglGetProcAddressD3D(LPCSTR a); + + // Validate license + if (!dglValidate()) + return NULL; + +#ifdef _USE_GLD3_WGL + return _gldDriver.wglGetProcAddress(a); +#else + return dglGetProcAddressD3D(a); +#endif +} + +// *********************************************************************** + +BOOL APIENTRY _GLD_WGL_EXPORT(MakeCurrent)( + HDC a, + HGLRC b) +{ + // Validate license + if (!dglValidate()) + return FALSE; + + return dglMakeCurrent(a, b); +} + +// *********************************************************************** + +BOOL APIENTRY _GLD_WGL_EXPORT(RealizeLayerPalette)( + HDC a, + int b, + BOOL c) +{ + // Validate license + if (!dglValidate()) + return FALSE; + + UNSUPPORTED("DGL_RealizeLayerPalette") + return FALSE; +} + +// *********************************************************************** + +int APIENTRY _GLD_WGL_EXPORT(SetLayerPaletteEntries)( + HDC a, + int b, + int c, + int d, + CONST COLORREF *e) +{ + // Validate license + if (!dglValidate()) + return 0; + + UNSUPPORTED("DGL_SetLayerPaletteEntries") + return 0; +} + +// *********************************************************************** + +BOOL APIENTRY _GLD_WGL_EXPORT(SetPixelFormat)( + HDC a, + int b, + CONST PIXELFORMATDESCRIPTOR *c) +{ + // Validate license + if (!dglValidate()) + return FALSE; + + if (IsValidPFD(b)) { + ddlogPrintf(DDLOG_SYSTEM, "SetPixelFormat: PixelFormat %d has been set", b); + dglSetPixelFormat(b); + return TRUE; + } else { + ddlogPrintf(DDLOG_ERROR, + "SetPixelFormat: PixelFormat %d is invalid and cannot be set", b); + return FALSE; + } +} + +// *********************************************************************** +/* + * Share lists between two gl_context structures. + * This was added for WIN32 WGL function support, since wglShareLists() + * must be called *after* wglCreateContext() with valid GLRCs. (DaveM) + */ +// +// Copied from GLD2.x. KeithH +// +static GLboolean _gldShareLists( + GLcontext *ctx1, + GLcontext *ctx2) +{ + /* Sanity check context pointers */ + if (ctx1 == NULL || ctx2 == NULL) + return GL_FALSE; + /* Sanity check shared list pointers */ + if (ctx1->Shared == NULL || ctx2->Shared == NULL) + return GL_FALSE; + /* Decrement reference count on sharee to release previous list */ + ctx2->Shared->RefCount--; +#if 0 /* 3DStudio exits on this memory release */ + if (ctx2->Shared->RefCount == 0) + free_shared_state(ctx2, ctx2->Shared); +#endif + /* Re-assign list from sharer to sharee and increment reference count */ + ctx2->Shared = ctx1->Shared; + ctx1->Shared->RefCount++; + return GL_TRUE; +} + +// *********************************************************************** + +BOOL APIENTRY _GLD_WGL_EXPORT(ShareLists)( + HGLRC a, + HGLRC b) +{ + DGL_ctx *dgl1, *dgl2; + + // Validate license + if (!dglValidate()) + return FALSE; + + // Mesa supports shared lists, but you need to supply the shared + // GL context info when calling gl_create_context(). An auxiliary + // function gl_share_lists() has been added to update the shared + // list info after the GL contexts have been created. (DaveM) + dgl1 = dglGetContextAddress(a); + dgl2 = dglGetContextAddress(b); + if (dgl1->bAllocated && dgl2->bAllocated) { +#ifdef _USE_GLD3_WGL + return _gldShareLists(dgl1->glCtx, dgl2->glCtx); +#else + return (*mesaFuncs.gl_share_lists)(dgl1->glCtx, dgl2->glCtx); +#endif + } + return FALSE; +} + +// *********************************************************************** + +BOOL APIENTRY _GLD_WGL_EXPORT(SwapBuffers)( + HDC a) +{ + // Validate license + if (!dglValidate()) + return FALSE; + + return dglSwapBuffers(a); +} + +// *********************************************************************** + +BOOL APIENTRY _GLD_WGL_EXPORT(SwapLayerBuffers)( + HDC a, + UINT b) +{ + // Validate license + if (!dglValidate()) + return FALSE; + + return dglSwapBuffers(a); +} + +// *********************************************************************** + +// *********************************************************************** +// Note: This ResizeBuffers() function may be called from +// either MESA glViewport() or GLD wglMakeCurrent(). + +BOOL dglWglResizeBuffers( + GLcontext *ctx, + BOOL bDefaultDriver) +{ + DGL_ctx *dgl = NULL; + RECT rcScreenRect; + DWORD dwWidth; + DWORD dwHeight; + DDSURFACEDESC2 ddsd2; + DDSCAPS2 ddscaps2; + IDirectDrawClipper *lpddClipper = NULL; + DWORD dwFlags; + HRESULT hResult; + + DWORD dwMemoryType; + + int i; + struct gl_texture_object *tObj; + struct gl_texture_image *image; + + BOOL bWasFullscreen; + BOOL bSaveDesktop; + BOOL bFullScrnWin = FALSE; + DDSURFACEDESC2 ddsd2DisplayMode; + + DDBLTFX ddbltfx; + POINT pt; + RECT rcDst; +#ifdef _USE_GLD3_WGL + GLD_displayMode glddm; +#endif + +#define DDLOG_CRITICAL_OR_WARN (bDefaultDriver ? DDLOG_WARN : DDLOG_CRITICAL) + + // Validate license + if (!dglValidate()) + return FALSE; + + // Sanity checks + if (ctx == NULL) + return FALSE; + dgl = ctx->DriverCtx; + if (dgl == NULL) + return FALSE; + + // Get the window size and calculate its dimensions + if (dgl->hWnd == NULL) { + // Check for non-window DC = memory DC ? + if (GetClipBox(dgl->hDC, &rcScreenRect) == ERROR) + SetRect(&rcScreenRect, 0, 0, 0, 0); + } + else if (!GetClientRect(dgl->hWnd, &rcScreenRect)) + SetRect(&rcScreenRect, 0, 0, 0, 0); + dwWidth = rcScreenRect.right - rcScreenRect.left; + dwHeight = rcScreenRect.bottom - rcScreenRect.top; + CopyRect(&dgl->rcScreenRect, &rcScreenRect); + + // This will occur on Alt-Tab + if ((dwWidth == 0) && (dwHeight == 0)) { + //dgl->bCanRender = FALSE; + return TRUE; // No resize possible! + } + + // Some apps zero only 1 dimension for non-visible window... (DaveM) + if ((dwWidth == 0) || (dwHeight == 0)) { + dwWidth = 8; + dwHeight = 8; + } + + // Test to see if a resize is required. + // Note that the dimensions will be the same if a prior resize attempt failed. + if ((dwWidth == dgl->dwWidth) && (dwHeight == dgl->dwHeight) && bDefaultDriver) { + return TRUE; // No resize required + } + + ddlogPrintf(DDLOG_SYSTEM, "dglResize: %dx%d", dwWidth, dwHeight); +#ifndef _USE_GLD3_WGL + // Work out where we want our surfaces created + dwMemoryType = (bDefaultDriver) ? glb.dwMemoryType : DDSCAPS_SYSTEMMEMORY; +#endif // _USE_GLD3_WGL + + // Note previous fullscreen vs window display status + bWasFullscreen = dgl->bFullscreen; + +#ifdef _USE_GLD3_WGL + if (_gldDriver.GetDisplayMode(dgl, &glddm)) { + if ( (dwWidth == glddm.Width) && + (dwHeight == glddm.Height) ) { + bFullScrnWin = TRUE; + } + if (bFullScrnWin && glb.bPrimary && !glb.bFullscreenBlit && !glb.bDirectDrawPersistant) { + dgl->bFullscreen = TRUE; + ddlogMessage(DDLOG_INFO, "Fullscreen window after resize.\n"); + } + else { + dgl->bFullscreen = FALSE; + ddlogMessage(DDLOG_INFO, "Non-Fullscreen window after resize.\n"); + } + // Cache the display mode dimensions + dgl->dwModeWidth = glddm.Width; + dgl->dwModeHeight = glddm.Height; + } + + // Clamp the effective window dimensions to primary surface. + // We need to do this for D3D viewport dimensions even if wide + // surfaces are supported. This also is a good idea for handling + // whacked-out window dimensions passed for non-drawable windows + // like Solid Edge. (DaveM) + if (dgl->dwWidth > glddm.Width) + dgl->dwWidth = glddm.Width; + if (dgl->dwHeight > glddm.Height) + dgl->dwHeight = glddm.Height; +#else // _USE_GLD3_WGL + // Window resize may have changed to fullscreen + ZeroMemory(&ddsd2DisplayMode, sizeof(ddsd2DisplayMode)); + ddsd2DisplayMode.dwSize = sizeof(ddsd2DisplayMode); + hResult = IDirectDraw4_GetDisplayMode( + dgl->lpDD4, + &ddsd2DisplayMode); + if (SUCCEEDED(hResult)) { + if ( (dwWidth == ddsd2DisplayMode.dwWidth) && + (dwHeight == ddsd2DisplayMode.dwHeight) ) { + bFullScrnWin = TRUE; + } + if (bFullScrnWin && glb.bPrimary && !glb.bFullscreenBlit && !glb.bDirectDrawPersistant) { + dgl->bFullscreen = TRUE; + ddlogMessage(DDLOG_INFO, "Fullscreen window after resize.\n"); + } + else { + dgl->bFullscreen = FALSE; + ddlogMessage(DDLOG_INFO, "Non-Fullscreen window after resize.\n"); + } + // Cache the display mode dimensions + dgl->dwModeWidth = ddsd2DisplayMode.dwWidth; + dgl->dwModeHeight = ddsd2DisplayMode.dwHeight; + } + + // Clamp the effective window dimensions to primary surface. + // We need to do this for D3D viewport dimensions even if wide + // surfaces are supported. This also is a good idea for handling + // whacked-out window dimensions passed for non-drawable windows + // like Solid Edge. (DaveM) + if (dgl->dwWidth > ddsd2DisplayMode.dwWidth) + dgl->dwWidth = ddsd2DisplayMode.dwWidth; + if (dgl->dwHeight > ddsd2DisplayMode.dwHeight) + dgl->dwHeight = ddsd2DisplayMode.dwHeight; +#endif // _USE_GLD3_WGL + + // Note if fullscreen vs window display has changed? + bSaveDesktop = (!bWasFullscreen && !dgl->bFullscreen) ? TRUE : FALSE; + // Save the desktop primary surface from being destroyed + // whenever remaining in windowed mode, since the stereo mode + // switches are expensive... + +#ifndef _USE_GLD3_WGL + // Don't need to re-allocate persistant buffers. (DaveM) + // Though we should clear the back buffers to hide artifacts. + if (glb.bDirectDrawPersistant && glb.bPersistantBuffers) { + dgl->dwWidth = dwWidth; + dgl->dwHeight = dwHeight; + ZeroMemory(&ddbltfx, sizeof(ddbltfx)); + ddbltfx.dwSize = sizeof(ddbltfx); + ddbltfx.dwFillColor = dgl->dwClearColorPF; + IDirectDrawSurface4_Blt(dgl->lpBack4, &rcScreenRect, NULL, NULL, + DDBLT_WAIT | DDBLT_COLORFILL, &ddbltfx); + return TRUE; + } + + // Ensure all rendering is complete + if (ctx->Driver.Finish) + (*ctx->Driver.Finish)(ctx); + if (dgl->bSceneStarted == TRUE) { + IDirect3DDevice3_EndScene(dgl->lpDev3); + dgl->bSceneStarted = FALSE; + } +#endif // _USE_GLD3_WGL + dgl->bCanRender = FALSE; + +#ifdef GLD_THREADS + // Serialize access to DirectDraw and DDS operations + if (glb.bMultiThreaded) + EnterCriticalSection(&CriticalSection); +#endif + +#ifndef _USE_GLD3_WGL + // Release existing surfaces + RELEASE(dgl->lpDev3); + RELEASE(dgl->lpDepth4); + RELEASE(dgl->lpBack4); + if (glb.bDirectDrawPersistant && glb.bDirectDrawPrimary) + ; + else + RELEASE(dgl->lpFront4); +#endif // _USE_GLD3_WGL + dgl->dwWidth = dwWidth; + dgl->dwHeight = dwHeight; + + // Set defaults + dgl->dwModeWidth = dgl->dwWidth; + dgl->dwModeHeight = dgl->dwHeight; + +#ifdef _USE_GLD3_WGL + if (!_gldDriver.ResizeDrawable(dgl, bDefaultDriver, glb.bDirectDrawPersistant, glb.bPersistantBuffers)) + goto cleanup_and_return_with_error; +#else // _USE_GLD3_WGL + + if (dgl->bFullscreen) { + // + // FULLSCREEN + // + + // Disable warning popups when in fullscreen mode + ddlogWarnOption(FALSE); + + // Have to release the persistant DirectDraw primary surface + // if switching to fullscreen mode. So if application wants + // persistant display in fullscreen mode, a fullscreen-size + // window should be used instead via fullscreen-blit option. + if (glb.bDirectDrawPersistant && glb.bDirectDrawPrimary) { + RELEASE(glb.lpPrimary4); + glb.bDirectDrawPrimary = FALSE; + } + + dwFlags = DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN | DDSCL_ALLOWREBOOT; + if (glb.bFastFPU) + dwFlags |= DDSCL_FPUSETUP; // optional + hResult = IDirectDraw4_SetCooperativeLevel(dgl->lpDD4, dgl->hWnd, dwFlags); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: Unable to set Exclusive Fullscreen mode", hResult); + goto cleanup_and_return_with_error; + } + + hResult = IDirectDraw4_SetDisplayMode(dgl->lpDD4, + dgl->dwModeWidth, + dgl->dwModeHeight, + dgl->dwBPP, + 0, + 0); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: SetDisplayMode failed", hResult); + goto cleanup_and_return_with_error; + } + + // ** The display mode has changed, so dont use MessageBox! ** + + ZeroMemory(&ddsd2, sizeof(ddsd2)); + ddsd2.dwSize = sizeof(ddsd2); + + if (dgl->bDoubleBuffer) { + // Double buffered + // Primary surface + ddsd2.dwFlags = DDSD_CAPS | DDSD_BACKBUFFERCOUNT; + ddsd2.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE | + DDSCAPS_FLIP | + DDSCAPS_COMPLEX | + DDSCAPS_3DDEVICE | + dwMemoryType; + ddsd2.dwBackBufferCount = 1; + hResult = IDirectDraw4_CreateSurface(dgl->lpDD4, &ddsd2, &dgl->lpFront4, NULL); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: CreateSurface (primary) failed", hResult); + goto cleanup_and_return_with_error; + } + // Render target surface + ZeroMemory(&ddscaps2, sizeof(ddscaps2)); // Clear the entire struct. + ddscaps2.dwCaps = DDSCAPS_BACKBUFFER; + hResult = IDirectDrawSurface4_GetAttachedSurface(dgl->lpFront4, &ddscaps2, &dgl->lpBack4); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: GetAttachedSurface failed", hResult); + goto cleanup_and_return_with_error; + } + } else { + // Single buffered + // Primary surface + ddsd2.dwFlags = DDSD_CAPS; + ddsd2.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE | + //DDSCAPS_3DDEVICE | + dwMemoryType; + + hResult = IDirectDraw4_CreateSurface(dgl->lpDD4, &ddsd2, &dgl->lpFront4, NULL); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: CreateSurface (primary) failed", hResult); + goto cleanup_and_return_with_error; + } + + dgl->lpBack4 = NULL; + } + } else { + // WINDOWED + + // OK to enable warning popups in windowed mode + ddlogWarnOption(glb.bMessageBoxWarnings); + + // Ditto if persistant DirectDraw primary + if (glb.bDirectDrawPersistant && glb.bDirectDrawPrimary) + goto DoClipperOnly; + + // WINDOWED + dwFlags = DDSCL_NORMAL; + if (glb.bMultiThreaded) + dwFlags |= DDSCL_MULTITHREADED; + if (glb.bFastFPU) + dwFlags |= DDSCL_FPUSETUP; // optional + hResult = IDirectDraw4_SetCooperativeLevel(dgl->lpDD4, + dgl->hWnd, + dwFlags); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: Unable to set Normal coop level", hResult); + goto cleanup_and_return_with_error; + } + // Primary surface + ZeroMemory(&ddsd2, sizeof(ddsd2)); + ddsd2.dwSize = sizeof(ddsd2); + ddsd2.dwFlags = DDSD_CAPS; + ddsd2.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE; + hResult = IDirectDraw4_CreateSurface(dgl->lpDD4, &ddsd2, &dgl->lpFront4, NULL); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: CreateSurface (primary) failed", hResult); + goto cleanup_and_return_with_error; + } + + // Cache the primary surface for persistant DirectDraw state + if (glb.bDirectDrawPersistant && !glb.bDirectDrawPrimary) { + glb.lpPrimary4 = dgl->lpFront4; + IDirectDrawSurface4_AddRef(glb.lpPrimary4); + glb.bDirectDrawPrimary = TRUE; + } + + // Clipper object + hResult = DirectDrawCreateClipper(0, &lpddClipper, NULL); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: CreateClipper failed", hResult); + goto cleanup_and_return_with_error; + } + hResult = IDirectDrawClipper_SetHWnd(lpddClipper, 0, dgl->hWnd); + if (FAILED(hResult)) { + RELEASE(lpddClipper); + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: SetHWnd failed", hResult); + goto cleanup_and_return_with_error; + } + hResult = IDirectDrawSurface4_SetClipper(dgl->lpFront4, lpddClipper); + RELEASE(lpddClipper); // We have finished with it. + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: SetClipper failed", hResult); + goto cleanup_and_return_with_error; + } +DoClipperOnly: + // Update the window for the original clipper + if ((glb.bDirectDrawPersistant && glb.bDirectDrawPrimary) || bSaveDesktop) { + IDirectDrawSurface4_GetClipper(dgl->lpFront4, &lpddClipper); + IDirectDrawClipper_SetHWnd(lpddClipper, 0, dgl->hWnd); + RELEASE(lpddClipper); + } + + if (dgl->bDoubleBuffer) { + // Render target surface + ZeroMemory(&ddsd2, sizeof(ddsd2)); + ddsd2.dwSize = sizeof(ddsd2); + ddsd2.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT; + ddsd2.dwWidth = dgl->dwWidth; + ddsd2.dwHeight = dgl->dwHeight; + ddsd2.ddsCaps.dwCaps = DDSCAPS_3DDEVICE | + DDSCAPS_OFFSCREENPLAIN | + dwMemoryType; + hResult = IDirectDraw4_CreateSurface(dgl->lpDD4, &ddsd2, &dgl->lpBack4, NULL); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: Create Backbuffer failed", hResult); + goto cleanup_and_return_with_error; + } + + } else { + dgl->lpBack4 = NULL; + } + } + + // + // Now create the Zbuffer + // + if (dgl->bDepthBuffer) { + // Get z-buffer dimensions from the render target + // Setup the surface desc for the z-buffer. + ZeroMemory(&ddsd2, sizeof(ddsd2)); + ddsd2.dwSize = sizeof(ddsd2); + ddsd2.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT | DDSD_PIXELFORMAT; + ddsd2.ddsCaps.dwCaps = DDSCAPS_ZBUFFER | dwMemoryType; + ddsd2.dwWidth = dgl->dwWidth; + ddsd2.dwHeight = dgl->dwHeight; + memcpy(&ddsd2.ddpfPixelFormat, + &glb.lpZBufferPF[dgl->iZBufferPF], + sizeof(DDPIXELFORMAT) ); + + // Create a z-buffer + hResult = IDirectDraw4_CreateSurface(dgl->lpDD4, &ddsd2, &dgl->lpDepth4, NULL); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: CreateSurface (ZBuffer) failed", hResult); + goto cleanup_and_return_with_error; + } + + // Attach Zbuffer to render target + TRY(IDirectDrawSurface4_AddAttachedSurface( + dgl->bDoubleBuffer ? dgl->lpBack4 : dgl->lpFront4, + dgl->lpDepth4), + "dglResize: Attach Zbuffer"); + + } + + // Clear the newly resized back buffers for the window client area. + ZeroMemory(&ddbltfx, sizeof(ddbltfx)); + ddbltfx.dwSize = sizeof(ddbltfx); + ddbltfx.dwFillColor = dgl->dwClearColorPF; + IDirectDrawSurface4_Blt(dgl->lpBack4, &rcScreenRect, NULL, NULL, + DDBLT_WAIT | DDBLT_COLORFILL, &ddbltfx); + + // + // Now that we have a zbuffer we can create the 3D device + // + hResult = IDirect3D3_CreateDevice(dgl->lpD3D3, + bDefaultDriver ? &glb.d3dGuid : &IID_IDirect3DRGBDevice, + dgl->bDoubleBuffer ? dgl->lpBack4 : dgl->lpFront4, + &dgl->lpDev3, + NULL); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: Could not create Direct3D device", hResult); + goto cleanup_and_return_with_error; + } + + // We must do this as soon as the device is created + dglInitStateCaches(dgl); + + // + // Viewport + // + hResult = IDirect3DDevice3_AddViewport(dgl->lpDev3, dgl->lpViewport3); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: AddViewport failed", hResult); + goto cleanup_and_return_with_error; + } + + // Initialise the viewport + dgl->d3dViewport.dwSize = sizeof(dgl->d3dViewport); + dgl->d3dViewport.dwX = 0; + dgl->d3dViewport.dwY = 0; + dgl->d3dViewport.dwWidth = dgl->dwWidth; + dgl->d3dViewport.dwHeight = dgl->dwHeight; + dgl->d3dViewport.dvClipX = 0; + dgl->d3dViewport.dvClipY = 0; + dgl->d3dViewport.dvClipWidth = dgl->dwWidth; + dgl->d3dViewport.dvClipHeight = dgl->dwHeight; +// dgl->d3dViewport.dvMinZ = 0.0f; +// dgl->d3dViewport.dvMaxZ = 1.0f; + TRY(IDirect3DViewport3_SetViewport2(dgl->lpViewport3, &dgl->d3dViewport), + "dglResize: SetViewport2"); + + hResult = IDirect3DDevice3_SetCurrentViewport(dgl->lpDev3, dgl->lpViewport3); + if (FAILED(hResult)) { + ddlogError(DDLOG_CRITICAL_OR_WARN, "dglResize: SetCurrentViewport failed", hResult); + goto cleanup_and_return_with_error; + } + + // (Re)Initialise all the Direct3D renderstates + dglInitStateD3D(ctx); + + // Now we have to recreate all of our textures (+ mipmaps). + // Luckily, Mesa has a list of them. + tObj = ctx->Shared->TexObjectList; + while (tObj != NULL) { + if (tObj->DriverData) { + // We could call our TexImage function directly, but it's + // safer to use the driver pointer. + for (i=0; i<MAX_TEXTURE_LEVELS; i++) { + image = tObj->Image[i]; + if (image) { + switch (tObj->Dimensions){ + case 1: + if (ctx->Driver.TexImage) + (*ctx->Driver.TexImage)(ctx, GL_TEXTURE_1D, tObj, i, image->Format, image); + break; + case 2: + if (ctx->Driver.TexImage) + (*ctx->Driver.TexImage)(ctx, GL_TEXTURE_2D, tObj, i, image->Format, image); + break; + default: + break; + } + } + } + } + tObj = tObj->Next; + } + + // Re-Bind each texture Unit + for (i=0; i<glb.wMaxSimultaneousTextures; i++) { + tObj = ctx->Texture.Unit[i].Current; + if (tObj) { + DGL_texture *lpTex = (DGL_texture *)tObj->DriverData; + hResult = dglSetTexture(dgl, i, lpTex ? lpTex->lpTexture : NULL); + if (FAILED(hResult)) { + ddlogError(DDLOG_ERROR, "dglResize: SetTexture failed", hResult); + } + } + } +#endif // _USE_GLD3_WGL + + dgl->bCanRender = TRUE; + +#ifdef GLD_THREADS + // Release serialized access + if (glb.bMultiThreaded) + LeaveCriticalSection(&CriticalSection); +#endif + + // SUCCESS. + return TRUE; + +cleanup_and_return_with_error: + // Relase all interfaces before returning. +#ifdef _USE_GLD3_WGL + _gldDriver.DestroyDrawable(dgl); +#else // _USE_GLD3_WGL + RELEASE(dgl->lpDev3); + RELEASE(dgl->lpDepth4); + RELEASE(dgl->lpBack4); + if (glb.bDirectDrawPersistant && glb.bDirectDrawPrimary) + ; + else + RELEASE(dgl->lpFront4); + +#undef DDLOG_CRITICAL_OR_WARN +#endif // _USE_GLD3_WGL + + // Mark context as not being able to render + dgl->bCanRender = FALSE; + +#ifdef GLD_THREADS + // Release serialized access + if (glb.bMultiThreaded) + LeaveCriticalSection(&CriticalSection); +#endif + + return FALSE; +} + +// *********************************************************************** +// *********************************************************************** +// Support for bitmap fonts. +// *********************************************************************** +// *********************************************************************** + +/***************************************************************************** +** +** InvertGlyphBitmap. +** +** Invert the bitmap so that it suits OpenGL's representation. +** Each row starts on a double word boundary. +** +*****************************************************************************/ + +static void InvertGlyphBitmap( + int w, + int h, + DWORD *fptr, + DWORD *tptr) +{ + int dWordsInRow = (w+31)/32; + int i, j; + DWORD *tmp = tptr; + + if (w <= 0 || h <= 0) { + return; + } + + tptr += ((h-1)*dWordsInRow); + for (i = 0; i < h; i++) { + for (j = 0; j < dWordsInRow; j++) { + *(tptr + j) = *(fptr + j); + } + tptr -= dWordsInRow; + fptr += dWordsInRow; + } +} + +// *********************************************************************** + +/***************************************************************************** + * wglUseFontBitmaps + * + * Converts a subrange of the glyphs in a GDI font to OpenGL display + * lists. + * + * Extended to support any GDI font, not just TrueType fonts. (DaveM) + * + *****************************************************************************/ + +BOOL APIENTRY _GLD_WGL_EXPORT(UseFontBitmapsA)( + HDC hDC, + DWORD first, + DWORD count, + DWORD listBase) +{ + int i, ox, oy, ix, iy; + int w, h; + int iBufSize, iCurBufSize = 0; + DWORD *bitmapBuffer = NULL; + DWORD *invertedBitmapBuffer = NULL; + BOOL bSuccessOrFail = TRUE; + BOOL bTrueType = FALSE; + TEXTMETRIC tm; + GLYPHMETRICS gm; + RASTERIZER_STATUS rs; + MAT2 mat; + SIZE size; + RECT rect; + HDC hDCMem; + HBITMAP hBitmap; + BITMAPINFO bmi; + HFONT hFont; + + // Validate SciTech DirectGL license + if (!dglValidate()) + return FALSE; + + // Set up a unity matrix. + ZeroMemory(&mat, sizeof(mat)); + mat.eM11.value = 1; + mat.eM22.value = 1; + + // Test to see if selected font is TrueType or not + ZeroMemory(&tm, sizeof(tm)); + if (!GetTextMetrics(hDC, &tm)) { + ddlogMessage(DDLOG_ERROR, "DGL_UseFontBitmaps: Font metrics error\n"); + return (FALSE); + } + bTrueType = (tm.tmPitchAndFamily & TMPF_TRUETYPE) ? TRUE : FALSE; + + // Test to see if TRUE-TYPE capabilities are installed + // (only necessary if TrueType font selected) + ZeroMemory(&rs, sizeof(rs)); + if (bTrueType) { + if (!GetRasterizerCaps (&rs, sizeof (RASTERIZER_STATUS))) { + ddlogMessage(DDLOG_ERROR, "DGL_UseFontBitmaps: Raster caps error\n"); + return (FALSE); + } + if (!(rs.wFlags & TT_ENABLED)) { + ddlogMessage(DDLOG_ERROR, "DGL_UseFontBitmaps: No TrueType caps\n"); + return (FALSE); + } + } + + // Trick to get the current font handle + hFont = SelectObject(hDC, GetStockObject(SYSTEM_FONT)); + SelectObject(hDC, hFont); + + // Have memory device context available for holding bitmaps of font glyphs + hDCMem = CreateCompatibleDC(hDC); + SelectObject(hDCMem, hFont); + SetTextColor(hDCMem, RGB(0xFF, 0xFF, 0xFF)); + SetBkColor(hDCMem, 0); + + for (i = first; (DWORD) i < (first + count); i++) { + // Find out how much space is needed for the bitmap so we can + // Set the buffer size correctly. + if (bTrueType) { + // Use TrueType support to get bitmap size of glyph + iBufSize = GetGlyphOutline(hDC, i, GGO_BITMAP, &gm, + 0, NULL, &mat); + if (iBufSize == GDI_ERROR) { + bSuccessOrFail = FALSE; + break; + } + } + else { + // Use generic GDI support to compute bitmap size of glyph + w = tm.tmMaxCharWidth; + h = tm.tmHeight; + if (GetTextExtentPoint32(hDC, (LPCTSTR)&i, 1, &size)) { + w = size.cx; + h = size.cy; + } + iBufSize = w * h; + // Use DWORD multiple for compatibility + iBufSize += 3; + iBufSize /= 4; + iBufSize *= 4; + } + + // If we need to allocate Larger Buffers, then do so - but allocate + // An extra 50 % so that we don't do too many mallocs ! + if (iBufSize > iCurBufSize) { + if (bitmapBuffer) { + __wglFree(bitmapBuffer); + } + if (invertedBitmapBuffer) { + __wglFree(invertedBitmapBuffer); + } + + iCurBufSize = iBufSize * 2; + bitmapBuffer = (DWORD *) __wglMalloc(iCurBufSize); + invertedBitmapBuffer = (DWORD *) __wglMalloc(iCurBufSize); + + if (bitmapBuffer == NULL || invertedBitmapBuffer == NULL) { + bSuccessOrFail = FALSE; + break; + } + } + + // If we fail to get the Glyph data, delete the display lists + // Created so far and return FALSE. + if (bTrueType) { + // Use TrueType support to get bitmap of glyph + if (GetGlyphOutline(hDC, i, GGO_BITMAP, &gm, + iBufSize, bitmapBuffer, &mat) == GDI_ERROR) { + bSuccessOrFail = FALSE; + break; + } + + // Setup glBitmap parameters for current font glyph + w = gm.gmBlackBoxX; + h = gm.gmBlackBoxY; + ox = gm.gmptGlyphOrigin.x; + oy = gm.gmptGlyphOrigin.y; + ix = gm.gmCellIncX; + iy = gm.gmCellIncY; + } + else { + // Use generic GDI support to create bitmap of glyph + ZeroMemory(bitmapBuffer, iBufSize); + + if (i >= tm.tmFirstChar && i <= tm.tmLastChar) { + // Only create bitmaps for actual font glyphs + hBitmap = CreateBitmap(w, h, 1, 1, NULL); + SelectObject(hDCMem, hBitmap); + // Make bitmap of current font glyph + SetRect(&rect, 0, 0, w, h); + DrawText(hDCMem, (LPCTSTR)&i, 1, &rect, + DT_LEFT | DT_BOTTOM | DT_SINGLELINE | DT_NOCLIP); + // Make copy of bitmap in our local buffer + ZeroMemory(&bmi, sizeof(bmi)); + bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); + bmi.bmiHeader.biWidth = w; + bmi.bmiHeader.biHeight = -h; + bmi.bmiHeader.biPlanes = 1; + bmi.bmiHeader.biBitCount = 1; + bmi.bmiHeader.biCompression = BI_RGB; + GetDIBits(hDCMem, hBitmap, 0, h, bitmapBuffer, &bmi, 0); + DeleteObject(hBitmap); + } + else { + // Otherwise use empty display list for non-existing glyph + iBufSize = 0; + } + + // Setup glBitmap parameters for current font glyph + ox = 0; + oy = tm.tmDescent; + ix = w; + iy = 0; + } + + // Create an OpenGL display list. + _GLD_glNewList((listBase + i), GL_COMPILE); + + // Some fonts have no data for the space character, yet advertise + // a non-zero size. + if (0 == iBufSize) { + _GLD_glBitmap(0, 0, 0.0f, 0.0f, (GLfloat) ix, (GLfloat) iy, NULL); + } else { + // Invert the Glyph data. + InvertGlyphBitmap(w, h, bitmapBuffer, invertedBitmapBuffer); + + // Render an OpenGL bitmap and invert the origin. + _GLD_glBitmap(w, h, + (GLfloat) ox, (GLfloat) (h-oy), + (GLfloat) ix, (GLfloat) iy, + (GLubyte *) invertedBitmapBuffer); + } + + // Close this display list. + _GLD_glEndList(); + } + + if (bSuccessOrFail == FALSE) { + ddlogMessage(DDLOG_ERROR, "DGL_UseFontBitmaps: Get glyph failed\n"); + _GLD_glDeleteLists((i+listBase), (i-first)); + } + + // Release resources used + DeleteObject(hFont); + DeleteDC(hDCMem); + + if (bitmapBuffer) + __wglFree(bitmapBuffer); + if (invertedBitmapBuffer) + __wglFree(invertedBitmapBuffer); + + return(bSuccessOrFail); +} + +// *********************************************************************** + +BOOL APIENTRY _GLD_WGL_EXPORT(UseFontBitmapsW)( + HDC a, + DWORD b, + DWORD c, + DWORD d) +{ + // Validate license + if (!dglValidate()) + return FALSE; + + return _GLD_WGL_EXPORT(UseFontBitmapsA)(a, b, c, d); +} + +// *********************************************************************** +// *********************************************************************** +// Support for outline TrueType fonts. +// *********************************************************************** +// *********************************************************************** + +void * __wglRealloc( + void *oldPtr, + size_t newSize) +{ + void *newPtr = NULL; + + if (newSize != 0) { + newPtr = (void *) GlobalAlloc(GPTR, newSize); + if (oldPtr && newPtr) { + DWORD oldSize = GlobalSize(oldPtr); + + memcpy(newPtr, oldPtr, (oldSize <= newSize ? oldSize : newSize)); + GlobalFree(oldPtr); + } + } else if (oldPtr) { + GlobalFree(oldPtr); + } + if (newPtr == NULL) { + return NULL; /* XXX out of memory error */ + } + return newPtr; +} + +// *********************************************************************** + + +/***************************************************************************** + * wglUseFontOutlinesW + * + * Converts a subrange of the glyphs in a TrueType font to OpenGL display + * lists. + *****************************************************************************/ + +BOOL APIENTRY _GLD_WGL_EXPORT(UseFontOutlinesW)( + IN HDC hDC, + IN DWORD first, + IN DWORD count, + IN DWORD listBase, + IN FLOAT chordalDeviation, + IN FLOAT extrusion, + IN INT format, + OUT LPGLYPHMETRICSFLOAT lpgmf) +{ + return _GLD_WGL_EXPORT(UseFontOutlinesA)(hDC, first, count, listBase, + chordalDeviation, extrusion, format, lpgmf); +} + +/***************************************************************************** + * wglUseFontOutlinesA + * + * Converts a subrange of the glyphs in a TrueType font to OpenGL display + * lists. + *****************************************************************************/ + +BOOL APIENTRY _GLD_WGL_EXPORT(UseFontOutlinesA)( + IN HDC hDC, + IN DWORD first, + IN DWORD count, + IN DWORD listBase, + IN FLOAT chordalDeviation, + IN FLOAT extrusion, + IN INT format, + OUT LPGLYPHMETRICSFLOAT glyphMetricsFloatArray) + { + DWORD glyphIndex; + UCHAR* glyphBuf; + DWORD glyphBufSize; + + + /* + * Flush any previous OpenGL errors. This allows us to check for + * new errors so they can be reported via the function return value. + */ + while (_GLD_glGetError() != GL_NO_ERROR) + ; + + /* + * Make sure that the current font can be sampled accurately. + */ + hNewFont = CreateHighResolutionFont(hDC); + if (!hNewFont) + return FALSE; + + hOldFont = SelectObject(hDC, hNewFont); + if (!hOldFont) + return FALSE; + + /* + * Preallocate a buffer for the outline data, and track its size: + */ + glyphBuf = (UCHAR*) __wglMalloc(glyphBufSize = 10240); + if (!glyphBuf) + return FALSE; /*WGL_STATUS_NOT_ENOUGH_MEMORY*/ + + /* + * Process each glyph in the given range: + */ + for (glyphIndex = first; glyphIndex - first < count; ++glyphIndex) + { + GLYPHMETRICS glyphMetrics; + DWORD glyphSize; + static MAT2 matrix = + { + {0, 1}, {0, 0}, + {0, 0}, {0, 1} + }; + LPGLYPHMETRICSFLOAT glyphMetricsFloat = + &glyphMetricsFloatArray[glyphIndex - first]; + + + /* + * Determine how much space is needed to store the glyph's + * outlines. If our glyph buffer isn't large enough, + * resize it. + */ + glyphSize = GetGlyphOutline( hDC, + glyphIndex, + GGO_NATIVE, + &glyphMetrics, + 0, + NULL, + &matrix + ); + if (glyphSize < 0) + return FALSE; /*WGL_STATUS_FAILURE*/ + if (glyphSize > glyphBufSize) + { + __wglFree(glyphBuf); + glyphBuf = (UCHAR*) __wglMalloc(glyphBufSize = glyphSize); + if (!glyphBuf) + return FALSE; /*WGL_STATUS_NOT_ENOUGH_MEMORY*/ + } + + + /* + * Get the glyph's outlines. + */ + if (GetGlyphOutline( hDC, + glyphIndex, + GGO_NATIVE, + &glyphMetrics, + glyphBufSize, + glyphBuf, + &matrix + ) < 0) + { + __wglFree(glyphBuf); + return FALSE; /*WGL_STATUS_FAILURE*/ + } + + glyphMetricsFloat->gmfBlackBoxX = + (FLOAT) glyphMetrics.gmBlackBoxX * ScaleFactor; + glyphMetricsFloat->gmfBlackBoxY = + (FLOAT) glyphMetrics.gmBlackBoxY * ScaleFactor; + glyphMetricsFloat->gmfptGlyphOrigin.x = + (FLOAT) glyphMetrics.gmptGlyphOrigin.x * ScaleFactor; + glyphMetricsFloat->gmfptGlyphOrigin.y = + (FLOAT) glyphMetrics.gmptGlyphOrigin.y * ScaleFactor; + glyphMetricsFloat->gmfCellIncX = + (FLOAT) glyphMetrics.gmCellIncX * ScaleFactor; + glyphMetricsFloat->gmfCellIncY = + (FLOAT) glyphMetrics.gmCellIncY * ScaleFactor; + + /* + * Turn the glyph into a display list: + */ + if (!MakeDisplayListFromGlyph( (glyphIndex - first) + listBase, + glyphBuf, + glyphSize, + glyphMetricsFloat, + chordalDeviation + ScaleFactor, + extrusion, + format)) + { + __wglFree(glyphBuf); + return FALSE; /*WGL_STATUS_FAILURE*/ + } + } + + + /* + * Clean up temporary storage and return. If an error occurred, + * clear all OpenGL error flags and return FAILURE status; + * otherwise just return SUCCESS. + */ + __wglFree(glyphBuf); + + SelectObject(hDC, hOldFont); + + if (_GLD_glGetError() == GL_NO_ERROR) + return TRUE; /*WGL_STATUS_SUCCESS*/ + else + { + while (_GLD_glGetError() != GL_NO_ERROR) + ; + return FALSE; /*WGL_STATUS_FAILURE*/ + } + } + + + +/***************************************************************************** + * CreateHighResolutionFont + * + * Gets metrics for the current font and creates an equivalent font + * scaled to the design units of the font. + * + *****************************************************************************/ + +static HFONT +CreateHighResolutionFont(HDC hDC) + { + UINT otmSize; + OUTLINETEXTMETRIC *otm; + LONG fontHeight, fontWidth, fontUnits; + LOGFONT logFont; + + otmSize = GetOutlineTextMetrics(hDC, 0, NULL); + if (otmSize == 0) + return NULL; + + otm = (OUTLINETEXTMETRIC *) __wglMalloc(otmSize); + if (otm == NULL) + return NULL; + + otm->otmSize = otmSize; + if (GetOutlineTextMetrics(hDC, otmSize, otm) == 0) + return NULL; + + fontHeight = otm->otmTextMetrics.tmHeight - + otm->otmTextMetrics.tmInternalLeading; + fontWidth = otm->otmTextMetrics.tmAveCharWidth; + fontUnits = (LONG) otm->otmEMSquare; + + ScaleFactor = 1.0F / (FLOAT) fontUnits; + + logFont.lfHeight = - ((LONG) fontUnits); + logFont.lfWidth = (LONG) + ((FLOAT) (fontWidth * fontUnits) / (FLOAT) fontHeight); + logFont.lfEscapement = 0; + logFont.lfOrientation = 0; + logFont.lfWeight = otm->otmTextMetrics.tmWeight; + logFont.lfItalic = otm->otmTextMetrics.tmItalic; + logFont.lfUnderline = otm->otmTextMetrics.tmUnderlined; + logFont.lfStrikeOut = otm->otmTextMetrics.tmStruckOut; + logFont.lfCharSet = otm->otmTextMetrics.tmCharSet; + logFont.lfOutPrecision = OUT_OUTLINE_PRECIS; + logFont.lfClipPrecision = CLIP_DEFAULT_PRECIS; + logFont.lfQuality = DEFAULT_QUALITY; + logFont.lfPitchAndFamily = + otm->otmTextMetrics.tmPitchAndFamily & 0xf0; + strcpy(logFont.lfFaceName, + (char *)otm + (int)otm->otmpFaceName); + + hNewFont = CreateFontIndirect(&logFont); + if (hNewFont == NULL) + return NULL; + + __wglFree(otm); + + return hNewFont; + } + + + +/***************************************************************************** + * MakeDisplayListFromGlyph + * + * Converts the outline of a glyph to an OpenGL display list. + * + * Return value is nonzero for success, zero for failure. + * + * Does not check for OpenGL errors, so if the caller needs to know about them, + * it should call glGetError(). + *****************************************************************************/ + +static int +MakeDisplayListFromGlyph( IN DWORD listName, + IN UCHAR* glyphBuf, + IN DWORD glyphSize, + IN LPGLYPHMETRICSFLOAT glyphMetricsFloat, + IN FLOAT chordalDeviation, + IN FLOAT extrusion, + IN INT format) + { + int status; + + _GLD_glNewList(listName, GL_COMPILE); + status = DrawGlyph( glyphBuf, + glyphSize, + chordalDeviation, + extrusion, + format); + + _GLD_glTranslatef(glyphMetricsFloat->gmfCellIncX, + glyphMetricsFloat->gmfCellIncY, + 0.0F); + _GLD_glEndList(); + + return status; + } + + + +/***************************************************************************** + * DrawGlyph + * + * Converts the outline of a glyph to OpenGL drawing primitives, tessellating + * as needed, and then draws the glyph. Tessellation of the quadratic splines + * in the outline is controlled by "chordalDeviation", and the drawing + * primitives (lines or polygons) are selected by "format". + * + * Return value is nonzero for success, zero for failure. + * + * Does not check for OpenGL errors, so if the caller needs to know about them, + * it should call glGetError(). + *****************************************************************************/ + +static int +DrawGlyph( IN UCHAR* glyphBuf, + IN DWORD glyphSize, + IN FLOAT chordalDeviation, + IN FLOAT extrusion, + IN INT format) + { + INT status = 0; + FLOAT* p; + DWORD loop; + DWORD point; + GLUtesselator* tess = NULL; + + + /* + * Initialize the global buffer into which we place the outlines: + */ + if (!InitLineBuf()) + goto exit; + + + /* + * Convert the glyph outlines to a set of polyline loops. + * (See MakeLinesFromGlyph() for the format of the loop data + * structure.) + */ + if (!MakeLinesFromGlyph(glyphBuf, glyphSize, chordalDeviation)) + goto exit; + p = LineBuf; + + + /* + * Now draw the loops in the appropriate format: + */ + if (format == WGL_FONT_LINES) + { + /* + * This is the easy case. Just draw the outlines. + */ + for (loop = (DWORD) *p++; loop; --loop) + { + _GLD_glBegin(GL_LINE_LOOP); + for (point = (DWORD) *p++; point; --point) + { + _GLD_glVertex2fv(p); + p += 2; + } + _GLD_glEnd(); + } + status = 1; + } + + else if (format == WGL_FONT_POLYGONS) + { + double v[3]; + FLOAT *save_p = p; + GLfloat z_value; + + /* + * This is the hard case. We have to set up a tessellator + * to convert the outlines into a set of polygonal + * primitives, which the tessellator passes to some + * auxiliary routines for drawing. + */ + if (!LoadGLUTesselator()) + goto exit; + if (!InitVertBuf()) + goto exit; + if (!(tess = gluNewTessProc())) + goto exit; + gluTessCallbackProc(tess, GLU_BEGIN, (void(CALLBACK *)()) _GLD_glBegin); + gluTessCallbackProc(tess, GLU_TESS_VERTEX_DATA, + (void(CALLBACK *)()) TessVertexOutData); + gluTessCallbackProc(tess, GLU_END, (void(CALLBACK *)()) _GLD_glEnd); + gluTessCallbackProc(tess, GLU_ERROR, (void(CALLBACK *)()) TessError); + gluTessCallbackProc(tess, GLU_TESS_COMBINE, (void(CALLBACK *)()) TessCombine); + gluTessNormalProc(tess, 0.0F, 0.0F, 1.0F); + + TessErrorOccurred = 0; + _GLD_glNormal3f(0.0f, 0.0f, 1.0f); + v[2] = 0.0; + z_value = 0.0f; + + gluTessBeginPolygonProc(tess, (void *)*(int *)&z_value); + for (loop = (DWORD) *p++; loop; --loop) + { + gluTessBeginContourProc(tess); + + for (point = (DWORD) *p++; point; --point) + { + v[0] = p[0]; + v[1] = p[1]; + gluTessVertexProc(tess, v, p); + p += 2; + } + + gluTessEndContourProc(tess); + } + gluTessEndPolygonProc(tess); + + status = !TessErrorOccurred; + + /* Extrusion code */ + if (extrusion) { + DWORD loops; + GLfloat thickness = (GLfloat) -extrusion; + FLOAT *vert, *vert2; + DWORD count; + + p = save_p; + loops = (DWORD) *p++; + + for (loop = 0; loop < loops; loop++) { + GLfloat dx, dy, len; + DWORD last; + + count = (DWORD) *p++; + _GLD_glBegin(GL_QUAD_STRIP); + + /* Check if the first and last vertex are identical + * so we don't draw the same quad twice. + */ + vert = p + (count-1)*2; + last = (p[0] == vert[0] && p[1] == vert[1]) ? count-1 : count; + + for (point = 0; point <= last; point++) { + vert = p + 2 * (point % last); + vert2 = p + 2 * ((point+1) % last); + + dx = vert[0] - vert2[0]; + dy = vert[1] - vert2[1]; + len = (GLfloat)sqrt(dx * dx + dy * dy); + + _GLD_glNormal3f(dy / len, -dx / len, 0.0f); + _GLD_glVertex3f((GLfloat) vert[0], + (GLfloat) vert[1], thickness); + _GLD_glVertex3f((GLfloat) vert[0], + (GLfloat) vert[1], 0.0f); + } + + _GLD_glEnd(); + p += count*2; + } + + /* Draw the back face */ + p = save_p; + v[2] = thickness; + _GLD_glNormal3f(0.0f, 0.0f, -1.0f); + gluTessNormalProc(tess, 0.0F, 0.0F, -1.0F); + + gluTessBeginPolygonProc(tess, (void *)*(int *)&thickness); + + for (loop = (DWORD) *p++; loop; --loop) + { + count = (DWORD) *p++; + + gluTessBeginContourProc(tess); + + for (point = 0; point < count; point++) + { + vert = p + ((count-point-1)<<1); + v[0] = vert[0]; + v[1] = vert[1]; + gluTessVertexProc(tess, v, vert); + } + p += count*2; + + gluTessEndContourProc(tess); + } + gluTessEndPolygonProc(tess); + } + +#if DEBUG + if (TessErrorOccurred) + printf("Tessellation error %s\n", + gluErrorString(TessErrorOccurred)); +#endif + } + + +exit: + FreeLineBuf(); + if (tess) + gluDeleteTessProc(tess); + // UnloadGLUTesselator(); + FreeVertBuf(); + return status; + } + + + +/***************************************************************************** + * LoadGLUTesselator + * + * Maps the glu32.dll module and gets function pointers for the + * tesselator functions. + *****************************************************************************/ + +static BOOL +LoadGLUTesselator(void) + { + if (gluModuleHandle != NULL) + return TRUE; + + { + extern HINSTANCE hInstanceOpenGL; + char *gluName = "GLU32.DLL"; +// char name[256]; +// char *ptr; +// int len; + +/* + len = GetModuleFileName(hInstanceOpenGL, name, 255); + if (len != 0) + { + ptr = name+len-1; + while (ptr > name && *ptr != '\\') + ptr--; + if (*ptr == '\\') + ptr++; + if (!stricmp(ptr, "cosmogl.dll")) + { + gluName = "COSMOGLU.DLL"; + } + else if (!stricmp(ptr, "opengl32.dll")) + { + gluName = "GLU32.DLL"; + } + } +*/ + if ((gluModuleHandle = LoadLibrary(gluName)) == NULL) + return FALSE; + } + + if ((gluNewTessProc = (gluNewTessProto) + GetProcAddress(gluModuleHandle, "gluNewTess")) == NULL) + return FALSE; + + if ((gluDeleteTessProc = (gluDeleteTessProto) + GetProcAddress(gluModuleHandle, "gluDeleteTess")) == NULL) + return FALSE; + + if ((gluTessBeginPolygonProc = (gluTessBeginPolygonProto) + GetProcAddress(gluModuleHandle, "gluTessBeginPolygon")) == NULL) + return FALSE; + + if ((gluTessBeginContourProc = (gluTessBeginContourProto) + GetProcAddress(gluModuleHandle, "gluTessBeginContour")) == NULL) + return FALSE; + + if ((gluTessVertexProc = (gluTessVertexProto) + GetProcAddress(gluModuleHandle, "gluTessVertex")) == NULL) + return FALSE; + + if ((gluTessEndContourProc = (gluTessEndContourProto) + GetProcAddress(gluModuleHandle, "gluTessEndContour")) == NULL) + return FALSE; + + if ((gluTessEndPolygonProc = (gluTessEndPolygonProto) + GetProcAddress(gluModuleHandle, "gluTessEndPolygon")) == NULL) + return FALSE; + + if ((gluTessPropertyProc = (gluTessPropertyProto) + GetProcAddress(gluModuleHandle, "gluTessProperty")) == NULL) + return FALSE; + + if ((gluTessNormalProc = (gluTessNormalProto) + GetProcAddress(gluModuleHandle, "gluTessNormal")) == NULL) + return FALSE; + + if ((gluTessCallbackProc = (gluTessCallbackProto) + GetProcAddress(gluModuleHandle, "gluTessCallback")) == NULL) + return FALSE; + + return TRUE; + } + + + +/***************************************************************************** + * UnloadGLUTesselator + * + * Unmaps the glu32.dll module. + *****************************************************************************/ + +static BOOL +UnloadGLUTesselator(void) + { + if (gluModuleHandle != NULL) + if (FreeLibrary(gluModuleHandle) == FALSE) + return FALSE; + gluModuleHandle = NULL; + } + + + +/***************************************************************************** + * TessVertexOut + * + * Used by tessellator to handle output vertexes. + *****************************************************************************/ + +static void CALLBACK +TessVertexOut(FLOAT p[3]) + { + GLfloat v[2]; + + v[0] = p[0] * ScaleFactor; + v[1] = p[1] * ScaleFactor; + _GLD_glVertex2fv(v); + } + +static void CALLBACK +TessVertexOutData(FLOAT p[3], GLfloat z) +{ + GLfloat v[3]; + + v[0] = (GLfloat) p[0]; + v[1] = (GLfloat) p[1]; + v[2] = z; + _GLD_glVertex3fv(v); +} + + +/***************************************************************************** + * TessCombine + * + * Used by tessellator to handle self-intersecting contours and degenerate + * geometry. + *****************************************************************************/ + +static void CALLBACK +TessCombine(double coords[3], + void* vertex_data[4], + FLOAT weight[4], + void** outData) + { + if (!AppendToVertBuf((FLOAT) coords[0]) + || !AppendToVertBuf((FLOAT) coords[1]) + || !AppendToVertBuf((FLOAT) coords[2])) + TessErrorOccurred = GL_OUT_OF_MEMORY; + *outData = VertBuf + (VertBufIndex - 3); + } + + + +/***************************************************************************** + * TessError + * + * Saves the last tessellator error code in the global TessErrorOccurred. + *****************************************************************************/ + +static void CALLBACK +TessError(GLenum error) + { + TessErrorOccurred = error; + } + + + +/***************************************************************************** + * MakeLinesFromGlyph + * + * Converts the outline of a glyph from the TTPOLYGON format to a simple + * array of floating-point values containing one or more loops. + * + * The first element of the output array is a count of the number of loops. + * The loop data follows this count. Each loop consists of a count of the + * number of vertices it contains, followed by the vertices. Each vertex + * is an X and Y coordinate. For example, a single triangle might be + * described by this array: + * + * 1., 3., 0., 0., 1., 0., 0., 1. + * ^ ^ ^ ^ ^ ^ ^ ^ + * #loops #verts x1 y1 x2 y2 x3 y3 + * + * A two-loop glyph would look like this: + * + * 2., 3., 0.,0., 1.,0., 0.,1., 3., .2,.2, .4,.2, .2,.4 + * + * Line segments from the TTPOLYGON are transferred to the output array in + * the obvious way. Quadratic splines in the TTPOLYGON are converted to + * collections of line segments + *****************************************************************************/ + +static int +MakeLinesFromGlyph(IN UCHAR* glyphBuf, + IN DWORD glyphSize, + IN FLOAT chordalDeviation) + { + UCHAR* p; + int status = 0; + + + /* + * Pick up all the polygons (aka loops) that make up the glyph: + */ + if (!AppendToLineBuf(0.0F)) /* loop count at LineBuf[0] */ + goto exit; + + p = glyphBuf; + while (p < glyphBuf + glyphSize) + { + if (!MakeLinesFromTTPolygon(&p, chordalDeviation)) + goto exit; + LineBuf[0] += 1.0F; /* increment loop count */ + } + + status = 1; + +exit: + return status; + } + + + +/***************************************************************************** + * MakeLinesFromTTPolygon + * + * Converts a TTPOLYGONHEADER and its associated curve structures into a + * single polyline loop in the global LineBuf. + *****************************************************************************/ + +static int +MakeLinesFromTTPolygon( IN OUT UCHAR** pp, + IN FLOAT chordalDeviation) + { + DWORD polySize; + UCHAR* polyStart; + DWORD vertexCountIndex; + + /* + * Record where the polygon data begins, and where the loop's + * vertex count resides: + */ + polyStart = *pp; + vertexCountIndex = LineBufIndex; + if (!AppendToLineBuf(0.0F)) + return 0; + + /* + * Extract relevant data from the TTPOLYGONHEADER: + */ + polySize = GetDWord(pp); + if (GetDWord(pp) != TT_POLYGON_TYPE) /* polygon type */ + return 0; + if (!AppendToLineBuf((FLOAT) GetFixed(pp))) /* first X coord */ + return 0; + if (!AppendToLineBuf((FLOAT) GetFixed(pp))) /* first Y coord */ + return 0; + LineBuf[vertexCountIndex] += 1.0F; + + /* + * Process each of the TTPOLYCURVE structures in the polygon: + */ + while (*pp < polyStart + polySize) + if (!MakeLinesFromTTPolycurve( pp, + vertexCountIndex, + chordalDeviation)) + return 0; + + return 1; + } + + + +/***************************************************************************** + * MakeLinesFromTTPolyCurve + * + * Converts the lines and splines in a single TTPOLYCURVE structure to points + * in the global LineBuf. + *****************************************************************************/ + +static int +MakeLinesFromTTPolycurve( IN OUT UCHAR** pp, + IN DWORD vertexCountIndex, + IN FLOAT chordalDeviation) + { + WORD type; + WORD pointCount; + + + /* + * Pick up the relevant fields of the TTPOLYCURVE structure: + */ + type = (WORD) GetWord(pp); + pointCount = (WORD) GetWord(pp); + + /* + * Convert the "curve" to line segments: + */ + if (type == TT_PRIM_LINE) + return MakeLinesFromTTLine( pp, + vertexCountIndex, + pointCount); + else if (type == TT_PRIM_QSPLINE) + return MakeLinesFromTTQSpline( pp, + vertexCountIndex, + pointCount, + chordalDeviation); + else + return 0; + } + + + +/***************************************************************************** + * MakeLinesFromTTLine + * + * Converts points from the polyline in a TT_PRIM_LINE structure to + * equivalent points in the global LineBuf. + *****************************************************************************/ +static int +MakeLinesFromTTLine( IN OUT UCHAR** pp, + IN DWORD vertexCountIndex, + IN WORD pointCount) + { + /* + * Just copy the line segments into the line buffer (converting + * type as we go): + */ + LineBuf[vertexCountIndex] += pointCount; + while (pointCount--) + { + if (!AppendToLineBuf((FLOAT) GetFixed(pp)) /* X coord */ + || !AppendToLineBuf((FLOAT) GetFixed(pp))) /* Y coord */ + return 0; + } + + return 1; + } + + + +/***************************************************************************** + * MakeLinesFromTTQSpline + * + * Converts points from the poly quadratic spline in a TT_PRIM_QSPLINE + * structure to polyline points in the global LineBuf. + *****************************************************************************/ + +static int +MakeLinesFromTTQSpline( IN OUT UCHAR** pp, + IN DWORD vertexCountIndex, + IN WORD pointCount, + IN FLOAT chordalDeviation) + { + FLOAT x0, y0, x1, y1, x2, y2; + WORD point; + + /* + * Process each of the non-interpolated points in the outline. + * To do this, we need to generate two interpolated points (the + * start and end of the arc) for each non-interpolated point. + * The first interpolated point is always the one most recently + * stored in LineBuf, so we just extract it from there. The + * second interpolated point is either the average of the next + * two points in the QSpline, or the last point in the QSpline + * if only one remains. + */ + for (point = 0; point < pointCount - 1; ++point) + { + x0 = LineBuf[LineBufIndex - 2]; + y0 = LineBuf[LineBufIndex - 1]; + + x1 = (FLOAT) GetFixed(pp); + y1 = (FLOAT) GetFixed(pp); + + if (point == pointCount - 2) + { + /* + * This is the last arc in the QSpline. The final + * point is the end of the arc. + */ + x2 = (FLOAT) GetFixed(pp); + y2 = (FLOAT) GetFixed(pp); + } + else + { + /* + * Peek at the next point in the input to compute + * the end of the arc: + */ + x2 = 0.5F * (x1 + (FLOAT) GetFixed(pp)); + y2 = 0.5F * (y1 + (FLOAT) GetFixed(pp)); + /* + * Push the point back onto the input so it will + * be reused as the next off-curve point: + */ + *pp -= 8; + } + + if (!MakeLinesFromArc( x0, y0, + x1, y1, + x2, y2, + vertexCountIndex, + chordalDeviation * chordalDeviation)) + return 0; + } + + return 1; + } + + + +/***************************************************************************** + * MakeLinesFromArc + * + * Subdivides one arc of a quadratic spline until the chordal deviation + * tolerance requirement is met, then places the resulting set of line + * segments in the global LineBuf. + *****************************************************************************/ + +static int +MakeLinesFromArc( IN FLOAT x0, + IN FLOAT y0, + IN FLOAT x1, + IN FLOAT y1, + IN FLOAT x2, + IN FLOAT y2, + IN DWORD vertexCountIndex, + IN FLOAT chordalDeviationSquared) + { + FLOAT x01; + FLOAT y01; + FLOAT x12; + FLOAT y12; + FLOAT midPointX; + FLOAT midPointY; + FLOAT deltaX; + FLOAT deltaY; + + /* + * Calculate midpoint of the curve by de Casteljau: + */ + x01 = 0.5F * (x0 + x1); + y01 = 0.5F * (y0 + y1); + x12 = 0.5F * (x1 + x2); + y12 = 0.5F * (y1 + y2); + midPointX = 0.5F * (x01 + x12); + midPointY = 0.5F * (y01 + y12); + + + /* + * Estimate chordal deviation by the distance from the midpoint + * of the curve to its non-interpolated control point. If this + * distance is greater than the specified chordal deviation + * constraint, then subdivide. Otherwise, generate polylines + * from the three control points. + */ + deltaX = midPointX - x1; + deltaY = midPointY - y1; + if (deltaX * deltaX + deltaY * deltaY > chordalDeviationSquared) + { + MakeLinesFromArc( x0, y0, + x01, y01, + midPointX, midPointY, + vertexCountIndex, + chordalDeviationSquared); + + MakeLinesFromArc( midPointX, midPointY, + x12, y12, + x2, y2, + vertexCountIndex, + chordalDeviationSquared); + } + else + { + /* + * The "pen" is already at (x0, y0), so we don't need to + * add that point to the LineBuf. + */ + if (!AppendToLineBuf(x1) + || !AppendToLineBuf(y1) + || !AppendToLineBuf(x2) + || !AppendToLineBuf(y2)) + return 0; + LineBuf[vertexCountIndex] += 2.0F; + } + + return 1; + } + + + +/***************************************************************************** + * InitLineBuf + * + * Initializes the global LineBuf and its associated size and current-element + * counters. + *****************************************************************************/ + +static int +InitLineBuf(void) + { + if (!(LineBuf = (FLOAT*) + __wglMalloc((LineBufSize = LINE_BUF_QUANT) * sizeof(FLOAT)))) + return 0; + LineBufIndex = 0; + return 1; + } + + + +/***************************************************************************** + * InitVertBuf + * + * Initializes the global VertBuf and its associated size and current-element + * counters. + *****************************************************************************/ + +static int +InitVertBuf(void) + { + if (!(VertBuf = (FLOAT*) + __wglMalloc((VertBufSize = VERT_BUF_QUANT) * sizeof(FLOAT)))) + return 0; + VertBufIndex = 0; + return 1; + } + + + +/***************************************************************************** + * AppendToLineBuf + * + * Appends one floating-point value to the global LineBuf array. Return value + * is non-zero for success, zero for failure. + *****************************************************************************/ + +static int +AppendToLineBuf(FLOAT value) + { + if (LineBufIndex >= LineBufSize) + { + FLOAT* f; + + f = (FLOAT*) __wglRealloc(LineBuf, + (LineBufSize += LINE_BUF_QUANT) * sizeof(FLOAT)); + if (!f) + return 0; + LineBuf = f; + } + LineBuf[LineBufIndex++] = value; + return 1; + } + + + +/***************************************************************************** + * AppendToVertBuf + * + * Appends one floating-point value to the global VertBuf array. Return value + * is non-zero for success, zero for failure. + * + * Note that we can't realloc this one, because the tessellator is using + * pointers into it. + *****************************************************************************/ + +static int +AppendToVertBuf(FLOAT value) + { + if (VertBufIndex >= VertBufSize) + return 0; + VertBuf[VertBufIndex++] = value; + return 1; + } + + + +/***************************************************************************** + * FreeLineBuf + * + * Cleans up vertex buffer structure. + *****************************************************************************/ + +static void +FreeLineBuf(void) + { + if (LineBuf) + { + __wglFree(LineBuf); + LineBuf = NULL; + } + } + + + +/***************************************************************************** + * FreeVertBuf + * + * Cleans up vertex buffer structure. + *****************************************************************************/ + +static void +FreeVertBuf(void) + { + if (VertBuf) + { + __wglFree(VertBuf); + VertBuf = NULL; + } + } + + + +/***************************************************************************** + * GetWord + * + * Fetch the next 16-bit word from a little-endian byte stream, and increment + * the stream pointer to the next unscanned byte. + *****************************************************************************/ + +static long GetWord(UCHAR** p) + { + long value; + + value = ((*p)[1] << 8) + (*p)[0]; + *p += 2; + return value; + } + + + +/***************************************************************************** + * GetDWord + * + * Fetch the next 32-bit word from a little-endian byte stream, and increment + * the stream pointer to the next unscanned byte. + *****************************************************************************/ + +static long GetDWord(UCHAR** p) + { + long value; + + value = ((*p)[3] << 24) + ((*p)[2] << 16) + ((*p)[1] << 8) + (*p)[0]; + *p += 4; + return value; + } + + + + +/***************************************************************************** + * GetFixed + * + * Fetch the next 32-bit fixed-point value from a little-endian byte stream, + * convert it to floating-point, and increment the stream pointer to the next + * unscanned byte. + *****************************************************************************/ + +static double GetFixed( + UCHAR** p) +{ + long hiBits, loBits; + double value; + + loBits = GetWord(p); + hiBits = GetWord(p); + value = (double) ((hiBits << 16) | loBits) / 65536.0; + + return value * ScaleFactor; +} + +// *********************************************************************** + |