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-rwxr-xr-xCNativeCode/wgltool.c752
1 files changed, 752 insertions, 0 deletions
diff --git a/CNativeCode/wgltool.c b/CNativeCode/wgltool.c
new file mode 100755
index 0000000..d57335c
--- /dev/null
+++ b/CNativeCode/wgltool.c
@@ -0,0 +1,752 @@
+/**
+ * glxtool.c
+ *
+ * Copyright (C) 2001 Sven Goethel
+ *
+ * GNU Library General Public License
+ * as published by the Free Software Foundation
+ *
+ * http://www.gnu.org/copyleft/lgpl.html
+ * General dynamical loading OpenGL (GL/GLU) support for:
+ */
+
+#include "wgltool.h"
+
+#include "wgl-disp-var.hc"
+
+/**
+ * do not call this one directly,
+ * use fetch_GL_FUNCS (gltool.c) instead
+ */
+void LIBAPIENTRY fetch_WGL_FUNCS (const char * libGLName,
+ const char * libGLUName, int force)
+{
+ static int _firstRun = 1;
+
+ if(force)
+ _firstRun = 1;
+
+ if(!_firstRun)
+ return;
+
+ if(!loadGLLibrary (libGLName, libGLUName))
+ return;
+
+ #define GET_GL_PROCADDRESS(a) getGLProcAddressHelper (libGLName, libGLUName, (a), NULL, 1, 0);
+
+
+ #include "wgl-disp-fetch.hc"
+
+ _firstRun=0;
+}
+
+
+HGLRC LIBAPIENTRY get_GC( HDC * hDC, GLCapabilities *glCaps,
+ HGLRC shareWith,
+ int offScreenRenderer,
+ int width, int height, HBITMAP *pix,
+ int verbose)
+
+{
+ const char * text=0;
+ HDC hDCOrig = 0;
+
+ // Color Palette handle
+ HPALETTE hPalette = NULL;
+ HGLRC tempRC=0;
+
+ if( *hDC == 0 && !offScreenRenderer)
+ printf( "get_GC: Error, HDC is zero\n");
+
+ // Select the pixel format
+ if(offScreenRenderer)
+ {
+ hDCOrig = *hDC;
+ *hDC = CreateCompatibleDC(hDCOrig);
+ // setupDIB(*hDC, pix, width, height);
+ setupDIB(hDCOrig, *hDC, pix, width, height);
+ /* SetDCPixelFormat(hDCOffScr, doubleBuffer, stereo, stencilBits, offScreenRenderer); */
+ /* setupPalette(hDC); USE MY PROC */
+ }
+
+ SetDCPixelFormat(*hDC, glCaps, offScreenRenderer, verbose);
+
+ // Create palette if needed
+ hPalette = GetOpenGLPalette(*hDC);
+
+ tempRC = disp__wglCreateContext( *hDC );
+
+ if(verbose)
+ {
+ fprintf(stderr,"\n\nPIXELFORMAT OF GL-Context SETTINGS:\n");
+ text=GetTextualPixelFormatByHDC(*hDC);
+ fprintf(stderr,text);
+ }
+
+ /* check if the context could be created */
+ if( tempRC == NULL ) {
+ fprintf(stderr, "getGC context could NOT be created \n");
+ return( 0 );
+ }
+
+ /* associated the context with the X window */
+ if( disp__wglMakeCurrent( *hDC, tempRC ) == FALSE) {
+ fprintf(stderr,"wglMakeCurrent(%p,%p) failed on new context!!!\n", *hDC,tempRC);
+ fprintf(stderr,"Error code = %d\n",(int)GetLastError());
+ disp__wglMakeCurrent(NULL, NULL);
+ disp__wglDeleteContext( tempRC );
+ return( 0 );
+ }
+
+ if(shareWith!=NULL && disp__wglShareLists(shareWith, tempRC)==FALSE)
+ {
+ fprintf(stderr,"\nERROR: Could not share lists between the new and the given GLContext (Win32Native)!\n");
+ fprintf(stderr,"Error code = %d\n",(int)GetLastError());
+ disp__wglMakeCurrent(NULL, NULL);
+ disp__wglDeleteContext( tempRC );
+ return( 0 );
+ }
+
+ if(verbose)
+ printf( "HGLRC (glContext) created: %p\n", tempRC );
+
+ return tempRC;
+}
+
+void LIBAPIENTRY setPixelFormatByGLCapabilities(
+ PIXELFORMATDESCRIPTOR *pfd,
+ GLCapabilities *glCaps,
+ int offScreenRenderer,
+ HDC hdc)
+{
+
+ int colorBits = glCaps->redBits + glCaps->greenBits + glCaps->blueBits;
+
+ pfd->nSize=sizeof(PIXELFORMATDESCRIPTOR);
+ pfd->nVersion=1;
+ pfd->dwFlags=PFD_SUPPORT_OPENGL | PFD_GENERIC_ACCELERATED; /* refined later */
+ pfd->iPixelType=0;
+ pfd->cColorBits=0;
+ pfd->cRedBits=0;
+ pfd->cRedShift=0;
+ pfd->cGreenBits=0;
+ pfd->cGreenShift=0;
+ pfd->cBlueBits=0;
+ pfd->cBlueShift=0;
+ pfd->cAlphaBits=0;
+ pfd->cAlphaShift=0;
+ pfd->cAccumBits=0;
+ pfd->cAccumRedBits=0;
+ pfd->cAccumGreenBits=0;
+ pfd->cAccumBlueBits=0;
+ pfd->cAccumAlphaBits=0;
+ pfd->cDepthBits=32;
+ pfd->cStencilBits=0;
+ pfd->cAuxBuffers=0;
+ pfd->iLayerType=PFD_MAIN_PLANE;
+ pfd->bReserved=0;
+ pfd->dwLayerMask=0;
+ pfd->dwVisibleMask=0;
+ pfd->dwDamageMask=0;
+
+ if(COLOR_RGBA == glCaps->color)
+ pfd->iPixelType=PFD_TYPE_RGBA;
+ else
+ pfd->iPixelType=PFD_TYPE_COLORINDEX;
+
+ if(offScreenRenderer)
+ pfd->dwFlags |= PFD_DRAW_TO_BITMAP; // Draw to Bitmap
+ else
+ pfd->dwFlags |= PFD_DRAW_TO_WINDOW; // Draw to Window (not to bitmap)
+
+
+ if(BUFFER_DOUBLE==glCaps->buffer)
+ pfd->dwFlags |= PFD_DOUBLEBUFFER ; // Double buffered is optional
+
+ if(STEREO_ON==glCaps->stereo)
+ pfd->dwFlags |= PFD_STEREO ; // Stereo is optional
+
+ if(hdc!=NULL && GetDeviceCaps(hdc, BITSPIXEL)<colorBits)
+ pfd->cColorBits = GetDeviceCaps(hdc, BITSPIXEL);
+ else
+ pfd->cColorBits = (BYTE)colorBits;
+
+ pfd->cStencilBits = (BYTE) glCaps->stencilBits;
+}
+
+
+void LIBAPIENTRY SetDCPixelFormat(HDC hDC, GLCapabilities *glCaps,
+ int offScreenRenderer, int verbose)
+{
+ int nPixelFormat=-1;
+ const char * text=0;
+
+ PIXELFORMATDESCRIPTOR pfd ;
+
+ if(verbose)
+ {
+ fprintf(stdout, "GL4Java SetDCPixelFormat: input capabilities:\n");
+ printGLCapabilities ( glCaps );
+ }
+
+ if(glCaps->nativeVisualID>=0)
+ {
+ if ( 0 < DescribePixelFormat( hDC, (int)(glCaps->nativeVisualID),
+ sizeof(pfd), &pfd ) )
+ {
+ nPixelFormat=(int)(glCaps->nativeVisualID);
+ if(verbose)
+ {
+ fprintf(stderr,"\n\nUSER found stored PIXELFORMAT number: %ld\n",
+ nPixelFormat);
+ fflush(stderr);
+ }
+ } else {
+ fprintf(stderr,"\n\nUSER no stored PIXELFORMAT number found !!\n");
+ nPixelFormat = -1;
+ fflush(stderr);
+ }
+ }
+
+ if(nPixelFormat<0)
+ setPixelFormatByGLCapabilities( &pfd, glCaps, offScreenRenderer, hDC);
+
+ if(verbose)
+ {
+ fprintf(stderr,"\n\nUSER CHOOSED PIXELFORMAT (TRYING):\n");
+ text=GetTextualPixelFormatByPFD(&pfd, nPixelFormat);
+ fprintf(stderr,text);
+ fflush(stderr);
+ }
+
+ // Choose a pixel format that best matches that described in pfd
+ if( hDC == 0 )
+ printf( "SetDCPixelFormat: Error, no HDC-Contex is given\n");
+ else if(nPixelFormat<0)
+ nPixelFormat = ChoosePixelFormat(hDC, &pfd);
+
+ if( nPixelFormat == 0 )
+ printf( "SetDCPixelFormat: Error with PixelFormat\n" );
+
+ // Set the pixel format for the device context
+ if( SetPixelFormat(hDC, nPixelFormat, &pfd) == FALSE)
+ printf( "setpixel failed\n" );
+ else {
+ (void) setGLCapabilities ( hDC, nPixelFormat, glCaps );
+ if(verbose)
+ {
+ fprintf(stdout, "GL4Java SetDCPixelFormat: used capabilities:\n");
+ printGLCapabilities ( glCaps );
+ }
+ }
+ fflush(stdout);
+ fflush(stderr);
+}
+
+
+// If necessary, creates a 3-3-2 palette for the device context listed.
+HPALETTE LIBAPIENTRY GetOpenGLPalette(HDC hDC)
+{
+ HPALETTE hRetPal = NULL; // Handle to palette to be created
+ PIXELFORMATDESCRIPTOR pfd; // Pixel Format Descriptor
+ LOGPALETTE *pPal=0; // Pointer to memory for logical palette
+ int nPixelFormat=0; // Pixel format index
+ int nColors=0; // Number of entries in palette
+ int i=0; // Counting variable
+ BYTE RedRange=0,GreenRange=0,BlueRange=0;
+ // Range for each color entry (7,7,and 3)
+
+
+ // Get the pixel format index and retrieve the pixel format description
+ nPixelFormat = GetPixelFormat(hDC);
+ DescribePixelFormat(hDC, nPixelFormat, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
+
+ // Does this pixel format require a palette? If not, do not create a
+ // palette and just return NULL
+ if(!(pfd.dwFlags & PFD_NEED_PALETTE))
+ return NULL;
+
+ // Number of entries in palette. 8 bits yeilds 256 entries
+ nColors = 1 << pfd.cColorBits;
+
+ // Allocate space for a logical palette structure plus all the palette entries
+ pPal = (LOGPALETTE*)malloc(sizeof(LOGPALETTE) + nColors*sizeof(PALETTEENTRY));
+
+ // Fill in palette header
+ pPal->palVersion = 0x300; // Windows 3.0
+ pPal->palNumEntries = nColors; // table size
+
+ // Build mask of all 1's. This creates a number represented by having
+ // the low order x bits set, where x = pfd.cRedBits, pfd.cGreenBits, and
+ // pfd.cBlueBits.
+ RedRange = (1 << pfd.cRedBits) -1;
+ GreenRange = (1 << pfd.cGreenBits) - 1;
+ BlueRange = (1 << pfd.cBlueBits) -1;
+
+ // Loop through all the palette entries
+ for(i = 0; i < nColors; i++)
+ {
+ // Fill in the 8-bit equivalents for each component
+ pPal->palPalEntry[i].peRed = (i >> pfd.cRedShift) & RedRange;
+ pPal->palPalEntry[i].peRed = (unsigned char)(
+ (double) pPal->palPalEntry[i].peRed * 255.0 / RedRange);
+
+ pPal->palPalEntry[i].peGreen = (i >> pfd.cGreenShift) & GreenRange;
+ pPal->palPalEntry[i].peGreen = (unsigned char)(
+ (double)pPal->palPalEntry[i].peGreen * 255.0 / GreenRange);
+
+ pPal->palPalEntry[i].peBlue = (i >> pfd.cBlueShift) & BlueRange;
+ pPal->palPalEntry[i].peBlue = (unsigned char)(
+ (double)pPal->palPalEntry[i].peBlue * 255.0 / BlueRange);
+
+ pPal->palPalEntry[i].peFlags = (unsigned char) NULL;
+ }
+
+
+ // Create the palette
+ hRetPal = CreatePalette(pPal);
+
+ // Go ahead and select and realize the palette for this device context
+ SelectPalette(hDC,hRetPal,FALSE);
+ RealizePalette(hDC);
+
+ // Free the memory used for the logical palette structure
+ free(pPal);
+
+ // Return the handle to the new palette
+ return hRetPal;
+}
+
+
+static void
+PrintMessage( const char *Format, ... )
+{
+ va_list ArgList;
+ char Buffer[256];
+
+ va_start(ArgList, Format);
+ vsprintf(Buffer, Format, ArgList);
+ va_end(ArgList);
+
+ fprintf(stderr, Buffer);
+}
+
+
+int LIBAPIENTRY
+PixelFormatDescriptorFromDc( HDC Dc, PIXELFORMATDESCRIPTOR *Pfd )
+{
+ int PfdIndex;
+
+ if ( 0 < (PfdIndex = GetPixelFormat( Dc )) )
+ {
+ if ( 0 < DescribePixelFormat( Dc, PfdIndex, sizeof(*Pfd), Pfd ) )
+ {
+ return(PfdIndex);
+ }
+ else
+ {
+ PrintMessage("Could not get a description of pixel format %d\n",
+ PfdIndex );
+ }
+ }
+ else
+ {
+ PrintMessage("Could not get pixel format for Dc 0x%08lX\n", Dc );
+ }
+ return( 0 );
+}
+
+
+const char * LIBAPIENTRY
+GetTextualPixelFormatByPFD(PIXELFORMATDESCRIPTOR *ppfd, int format)
+{
+ static char buffer[2000];
+ char line[200];
+
+ sprintf(buffer,"Pixel format %d\n", format);
+ sprintf(line," dwFlags - 0x%x\n", ppfd->dwFlags);
+ if (ppfd->dwFlags & PFD_DOUBLEBUFFER) { strcat(buffer, line); sprintf(line,"\tPFD_DOUBLEBUFFER\n "); }
+ if (ppfd->dwFlags & PFD_STEREO) { strcat(buffer, line); sprintf(line,"\tPFD_STEREO\n "); }
+ if (ppfd->dwFlags & PFD_DRAW_TO_WINDOW) { strcat(buffer, line); sprintf(line,"\tPFD_DRAW_TO_WINDOW\n "); }
+ if (ppfd->dwFlags & PFD_DRAW_TO_BITMAP) { strcat(buffer, line); sprintf(line,"\tPFD_DRAW_TO_BITMAP\n "); }
+ if (ppfd->dwFlags & PFD_SUPPORT_GDI) { strcat(buffer, line); sprintf(line,"\tPFD_SUPPORT_GDI\n "); }
+ if (ppfd->dwFlags & PFD_SUPPORT_OPENGL) { strcat(buffer, line); sprintf(line,"\tPFD_SUPPORT_OPENGL\n "); }
+ if (ppfd->dwFlags & PFD_GENERIC_ACCELERATED) { strcat(buffer, line); sprintf(line,"\tPFD_GENERIC_ACCELERATED\n "); }
+ if (ppfd->dwFlags & PFD_GENERIC_FORMAT) { strcat(buffer, line); sprintf(line,"\tPFD_GENERIC_FORMAT\n "); }
+ if (ppfd->dwFlags & PFD_NEED_PALETTE) { strcat(buffer, line); sprintf(line,"\tPFD_NEED_PALETTE\n "); }
+ if (ppfd->dwFlags & PFD_NEED_SYSTEM_PALETTE) { strcat(buffer, line); sprintf(line,"\tPFD_NEED_SYSTEM_PALETTE\n "); }
+ strcat(buffer, line); sprintf(line,"\n");
+ strcat(buffer, line); sprintf(line," iPixelType - %d\n", ppfd->iPixelType);
+ if (ppfd->iPixelType == PFD_TYPE_RGBA) { strcat(buffer, line); sprintf(line,"\tPGD_TYPE_RGBA\n"); }
+ if (ppfd->iPixelType == PFD_TYPE_COLORINDEX) { strcat(buffer, line); sprintf(line,"\tPGD_TYPE_COLORINDEX\n"); }
+ strcat(buffer, line); sprintf(line," cColorBits - %d\n", ppfd->cColorBits);
+ strcat(buffer, line); sprintf(line," cRedBits - %d\n", ppfd->cRedBits);
+ strcat(buffer, line); sprintf(line," cRedShift - %d\n", ppfd->cRedShift);
+ strcat(buffer, line); sprintf(line," cGreenBits - %d\n", ppfd->cGreenBits);
+ strcat(buffer, line); sprintf(line," cGreenShift - %d\n", ppfd->cGreenShift);
+ strcat(buffer, line); sprintf(line," cBlueBits - %d\n", ppfd->cBlueBits);
+ strcat(buffer, line); sprintf(line," cBlueShift - %d\n", ppfd->cBlueShift);
+ strcat(buffer, line); sprintf(line," cAlphaBits - %d (N.A.)\n", ppfd->cAlphaBits);
+ strcat(buffer, line); sprintf(line," cAlphaShift - 0x%x (N.A.)\n", ppfd->cAlphaShift);
+ strcat(buffer, line); sprintf(line," cAccumBits - %d\n", ppfd->cAccumBits);
+ strcat(buffer, line); sprintf(line," cAccumRedBits - %d\n", ppfd->cAccumRedBits);
+ strcat(buffer, line); sprintf(line," cAccumGreenBits - %d\n", ppfd->cAccumGreenBits);
+ strcat(buffer, line); sprintf(line," cAccumBlueBits - %d\n", ppfd->cAccumBlueBits);
+ strcat(buffer, line); sprintf(line," cAccumAlphaBits - %d\n", ppfd->cAccumAlphaBits);
+ strcat(buffer, line); sprintf(line," cDepthBits - %d\n", ppfd->cDepthBits);
+ strcat(buffer, line); sprintf(line," cStencilBits - %d\n", ppfd->cStencilBits);
+ strcat(buffer, line); sprintf(line," cAuxBuffers - %d\n", ppfd->cAuxBuffers);
+ strcat(buffer, line); sprintf(line," iLayerType - %d\n", ppfd->iLayerType);
+ strcat(buffer, line); sprintf(line," bReserved - %d\n", ppfd->bReserved);
+ strcat(buffer, line); sprintf(line," dwLayerMask - 0x%x\n", ppfd->dwLayerMask);
+ strcat(buffer, line); sprintf(line," dwVisibleMask - 0x%x\n", ppfd->dwVisibleMask);
+ strcat(buffer, line); sprintf(line," dwDamageMask - 0x%x\n", ppfd->dwDamageMask);
+ strcat(buffer, line);
+ return buffer;
+}
+
+const char * LIBAPIENTRY GetTextualPixelFormatByHDC(HDC hdc)
+{
+ PIXELFORMATDESCRIPTOR pfd, *ppfd=0;
+ int format=0;
+
+ ppfd = &pfd;
+ format = PixelFormatDescriptorFromDc( hdc, ppfd );
+
+ return GetTextualPixelFormatByPFD(ppfd, format);
+}
+
+/*****************************************************************/
+
+/* Struct used to manage color ramps */
+typedef struct {
+ GLfloat amb[3]; /* ambient color / bottom of ramp */
+ GLfloat diff[3]; /* diffuse color / middle of ramp */
+ GLfloat spec[3]; /* specular color / top of ramp */
+ GLfloat ratio; /* ratio of diffuse to specular in ramp */
+ GLint indexes[3]; /* where ramp was placed in palette */
+} colorIndexState ;
+
+#define NUM_COLORS (sizeof(colors) / sizeof(colors[0]))
+
+void LIBAPIENTRY
+setupDIB(HDC hDCOrig, HDC hDC, HBITMAP * hBitmap, int width, int height)
+{
+ BITMAPINFO *bmInfo=0;
+ BITMAPINFOHEADER *bmHeader=0;
+ UINT usage=0;
+ VOID *base=0;
+ int bmiSize=0;
+ int bitsPerPixel=0;
+ HBITMAP hOldBitmap=0;
+
+ bmiSize = sizeof(*bmInfo);
+ bitsPerPixel = GetDeviceCaps(hDC, BITSPIXEL);
+
+ switch (bitsPerPixel) {
+ case 8:
+ // bmiColors is 256 WORD palette indices
+ bmiSize += (256 * sizeof(WORD)) - sizeof(RGBQUAD);
+ break;
+ case 16:
+ // bmiColors is 3 WORD component masks
+ bmiSize += (3 * sizeof(DWORD)) - sizeof(RGBQUAD);
+ break;
+ case 24:
+ case 32:
+ default:
+ // bmiColors not used
+ break;
+ }
+
+ bmInfo = (BITMAPINFO *) calloc(1, bmiSize);
+ bmHeader = &bmInfo->bmiHeader;
+
+ bmHeader->biSize = sizeof(*bmHeader);
+ bmHeader->biWidth = width;
+ bmHeader->biHeight = height;
+ bmHeader->biPlanes = 1; // must be 1
+ bmHeader->biBitCount = bitsPerPixel;
+ bmHeader->biXPelsPerMeter = 0;
+ bmHeader->biYPelsPerMeter = 0;
+ bmHeader->biClrUsed = 0; // all are used
+ bmHeader->biClrImportant = 0; // all are important
+
+ switch (bitsPerPixel) {
+ case 8:
+ bmHeader->biCompression = BI_RGB;
+ bmHeader->biSizeImage = 0;
+ usage = DIB_PAL_COLORS;
+ // bmiColors is 256 WORD palette indices
+ {
+ WORD *palIndex = (WORD *) &bmInfo->bmiColors[0];
+ int i;
+
+ for (i=0; i<256; i++) {
+ palIndex[i] = i;
+ }
+ }
+ break;
+ case 16:
+ bmHeader->biCompression = BI_RGB;
+ bmHeader->biSizeImage = 0;
+ usage = DIB_RGB_COLORS;
+ // bmiColors is 3 WORD component masks
+ {
+ DWORD *compMask = (DWORD *) &bmInfo->bmiColors[0];
+
+ compMask[0] = 0xF800;
+ compMask[1] = 0x07E0;
+ compMask[2] = 0x001F;
+ }
+ break;
+ case 24:
+ case 32:
+ default:
+ bmHeader->biCompression = BI_RGB;
+ bmHeader->biSizeImage = 0;
+ usage = DIB_RGB_COLORS;
+ // bmiColors not used
+ break;
+ }
+
+ *hBitmap = CreateDIBSection(hDC, bmInfo, usage, &base, NULL, 0);
+ if (*hBitmap == NULL) {
+ (void) MessageBox(WindowFromDC(hDC),
+ "Failed to create DIBSection.",
+ "OpenGL application error",
+ MB_ICONERROR | MB_OK);
+ exit(1);
+ }
+
+ hOldBitmap = SelectObject(hDC, *hBitmap);
+ if(hOldBitmap!=0)
+ DeleteObject(hOldBitmap);
+
+ free(bmInfo);
+}
+
+
+/*
+static void
+setupDIB(HDC hDCOrig, HDC hDC, HBITMAP * hBitmap, int width, int height)
+{
+ HBITMAP hOldBitmap=0;
+
+ *hBitmap = CreateCompatibleBitmap( hDCOrig, width, height );
+ if (*hBitmap == NULL) {
+ fprintf(stderr,"Failed to create CreateCompatibleBitmap! \n");
+ fflush(stderr);
+ return;
+ }
+
+ hOldBitmap = SelectObject(hDC, *hBitmap);
+ if(hOldBitmap!=0)
+ DeleteObject(hOldBitmap);
+}
+*/
+
+
+void LIBAPIENTRY resizeDIB(HDC hDC, HBITMAP *hOldBitmap, HBITMAP *hBitmap)
+{
+ /*
+ SelectObject(hDC, *hOldBitmap);
+ DeleteObject(*hBitmap);
+ setupDIB(hDC, hBitmap);
+ */
+}
+
+HPALETTE LIBAPIENTRY setupPalette(HDC hDC)
+{
+ HPALETTE hPalette = NULL;
+ PIXELFORMATDESCRIPTOR pfd;
+ LOGPALETTE* pPal=0;
+ int pixelFormat = GetPixelFormat(hDC);
+ int paletteSize=0;
+ colorIndexState colors[] = {
+ {
+ { 0.0F, 0.0F, 0.0F },
+ { 0.1F, 0.6F, 0.3F },
+ { 1.0F, 1.0F, 1.0F },
+ 0.75F, { 0, 0, 0 },
+ },
+ {
+ { 0.0F, 0.0F, 0.0F },
+ { 0.0F, 0.2F, 0.5F },
+ { 1.0F, 1.0F, 1.0F },
+ 0.75F, { 0, 0, 0 },
+ },
+ {
+ { 0.0F, 0.05F, 0.05F },
+ { 0.6F, 0.0F, 0.8F },
+ { 1.0F, 1.0F, 1.0F },
+ 0.75F, { 0, 0, 0 },
+ },
+ };
+
+
+ DescribePixelFormat(hDC, pixelFormat, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
+
+ /*
+ ** Determine if a palette is needed and if so what size.
+ */
+ if (pfd.dwFlags & PFD_NEED_PALETTE) {
+ paletteSize = 1 << pfd.cColorBits;
+ } else if (pfd.iPixelType == PFD_TYPE_COLORINDEX) {
+ paletteSize = 4096;
+ } else {
+ return NULL;
+ }
+
+ pPal = (LOGPALETTE*)
+ malloc(sizeof(LOGPALETTE) + paletteSize * sizeof(PALETTEENTRY));
+ pPal->palVersion = 0x300;
+ pPal->palNumEntries = paletteSize;
+
+ if (pfd.iPixelType == PFD_TYPE_RGBA) {
+ /*
+ ** Fill the logical paletee with RGB color ramps
+ */
+ int redMask = (1 << pfd.cRedBits) - 1;
+ int greenMask = (1 << pfd.cGreenBits) - 1;
+ int blueMask = (1 << pfd.cBlueBits) - 1;
+ int i;
+
+
+
+ for (i=0; i<paletteSize; ++i) {
+ pPal->palPalEntry[i].peRed =
+ (((i >> pfd.cRedShift) & redMask) * 255) / redMask;
+ pPal->palPalEntry[i].peGreen =
+ (((i >> pfd.cGreenShift) & greenMask) * 255) / greenMask;
+ pPal->palPalEntry[i].peBlue =
+ (((i >> pfd.cBlueShift) & blueMask) * 255) / blueMask;
+ pPal->palPalEntry[i].peFlags = 0;
+ }
+ } else {
+ /*
+ ** Fill the logical palette with color ramps.
+ **
+ ** Set up the logical palette so that it can be realized
+ ** into the system palette as an identity palette.
+ **
+ ** 1) The default static entries should be present and at the right
+ ** location. The easiest way to do this is to grab them from
+ ** the current system palette.
+ **
+ ** 2) All non-static entries should be initialized to unique values.
+ ** The easiest way to do this is to ensure that all of the non-static
+ ** entries have the PC_NOCOLLAPSE flag bit set.
+ */
+ int numRamps = NUM_COLORS;
+ int rampSize = (paletteSize - 20) / numRamps;
+ int extra = (paletteSize - 20) - (numRamps * rampSize);
+ int i, r;
+
+ /*
+ ** Initialize static entries by copying them from the
+ ** current system palette.
+ */
+ GetSystemPaletteEntries(hDC, 0, paletteSize, &pPal->palPalEntry[0]);
+
+ /*
+ ** Fill in non-static entries with desired colors.
+ */
+ for (r=0; r<numRamps; ++r) {
+ int rampBase = r * rampSize + 10;
+ PALETTEENTRY *pe = &pPal->palPalEntry[rampBase];
+ int diffSize = (int) (rampSize * colors[r].ratio);
+ int specSize = rampSize - diffSize;
+
+ for (i=0; i<rampSize; ++i) {
+ GLfloat *c0, *c1;
+ GLint a;
+
+ if (i < diffSize) {
+ c0 = colors[r].amb;
+ c1 = colors[r].diff;
+ a = (i * 255) / (diffSize - 1);
+ } else {
+ c0 = colors[r].diff;
+ c1 = colors[r].spec;
+ a = ((i - diffSize) * 255) / (specSize - 1);
+ }
+
+ pe[i].peRed = (BYTE) (a * (c1[0] - c0[0]) + 255 * c0[0]);
+ pe[i].peGreen = (BYTE) (a * (c1[1] - c0[1]) + 255 * c0[1]);
+ pe[i].peBlue = (BYTE) (a * (c1[2] - c0[2]) + 255 * c0[2]);
+ pe[i].peFlags = PC_NOCOLLAPSE;
+ }
+
+ colors[r].indexes[0] = rampBase;
+ colors[r].indexes[1] = rampBase + (diffSize-1);
+ colors[r].indexes[2] = rampBase + (rampSize-1);
+ }
+
+ /*
+ ** Initialize any remaining non-static entries.
+ */
+ for (i=0; i<extra; ++i) {
+ int index = numRamps*rampSize+10+i;
+ PALETTEENTRY *pe = &pPal->palPalEntry[index];
+
+ pe->peRed = (BYTE) 0;
+ pe->peGreen = (BYTE) 0;
+ pe->peBlue = (BYTE) 0;
+ pe->peFlags = PC_NOCOLLAPSE;
+ }
+ }
+
+ hPalette = CreatePalette(pPal);
+ free(pPal);
+
+ if (hPalette) {
+ SelectPalette(hDC, hPalette, FALSE);
+ RealizePalette(hDC);
+ }
+
+ return hPalette;
+}
+
+
+int LIBAPIENTRY setGLCapabilities ( HDC hdc,
+ int nPixelFormat,
+ GLCapabilities *glCaps )
+{
+ PIXELFORMATDESCRIPTOR pfd;
+
+ (void) PixelFormatDescriptorFromDc( hdc, &pfd);
+
+ if (pfd.dwFlags & PFD_DOUBLEBUFFER)
+ glCaps->buffer=BUFFER_DOUBLE;
+ else
+ glCaps->buffer=BUFFER_SINGLE;
+
+ if (pfd.dwFlags & PFD_STEREO)
+ glCaps->stereo=STEREO_ON;
+ else
+ glCaps->stereo=STEREO_OFF;
+
+ if (pfd.iPixelType == PFD_TYPE_RGBA)
+ glCaps->color=COLOR_RGBA;
+
+ if (pfd.iPixelType == PFD_TYPE_COLORINDEX)
+ glCaps->color=COLOR_INDEX;
+
+ glCaps->depthBits = pfd.cDepthBits;
+ glCaps->stencilBits = pfd.cStencilBits;
+
+ glCaps->redBits = pfd.cRedBits;
+ glCaps->greenBits= pfd.cGreenBits;
+ glCaps->blueBits= pfd.cBlueBits;
+ /* glCaps->alphaBits= pfd.cAlphaBits; N.A. */
+ glCaps->accumRedBits = pfd.cAccumRedBits;
+ glCaps->accumGreenBits= pfd.cAccumGreenBits;
+ glCaps->accumBlueBits= pfd.cAccumBlueBits;
+ glCaps->accumAlphaBits= pfd.cAccumAlphaBits;
+
+ glCaps->nativeVisualID=nPixelFormat;
+
+ return 1;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2025-05-11 05:16:59 +0000