136 lines
3.3 KiB
C++
136 lines
3.3 KiB
C++
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#include <stdio.h>
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#include <windows.h>
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#include <GL/gl.h>
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#include "stonehen.h"
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#include "setpixel.h"
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HPALETTE ghpalOld, ghPalette = (HPALETTE) 0;
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unsigned char threeto8[8] = {
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0, 0111>>1, 0222>>1, 0333>>1, 0444>>1, 0555>>1, 0666>>1, 0377
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};
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unsigned char twoto8[4] = {
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0, 0x55, 0xaa, 0xff
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};
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unsigned char oneto8[2] = {
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0, 255
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};
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unsigned char
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ComponentFromIndex(UCHAR i, UINT nbits, UINT shift)
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{
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unsigned char val;
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val = i >> shift;
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switch (nbits) {
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case 1:
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val &= 0x1;
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return oneto8[val];
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case 2:
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val &= 0x3;
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return twoto8[val];
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case 3:
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val &= 0x7;
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return threeto8[val];
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default:
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return 0;
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}
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}
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void
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CreateRGBPalette(HDC hdc)
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{
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PIXELFORMATDESCRIPTOR pfd, *ppfd;
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LOGPALETTE *pPal;
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int n, i;
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ppfd = &pfd;
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n = GetPixelFormat(hdc);
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DescribePixelFormat(hdc, n, sizeof(PIXELFORMATDESCRIPTOR), ppfd);
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if (ppfd->dwFlags & PFD_NEED_PALETTE) {
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n = 1 << ppfd->cColorBits;
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pPal = (PLOGPALETTE)LocalAlloc(LMEM_FIXED, sizeof(LOGPALETTE) +
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n * sizeof(PALETTEENTRY));
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pPal->palVersion = 0x300;
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pPal->palNumEntries = n;
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for (i=0; i<n; i++) {
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pPal->palPalEntry[i].peRed =
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ComponentFromIndex(i, ppfd->cRedBits, ppfd->cRedShift);
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pPal->palPalEntry[i].peGreen =
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ComponentFromIndex(i, ppfd->cGreenBits, ppfd->cGreenShift);
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pPal->palPalEntry[i].peBlue =
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ComponentFromIndex(i, ppfd->cBlueBits, ppfd->cBlueShift);
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pPal->palPalEntry[i].peFlags = 0;
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}
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ghPalette = CreatePalette(pPal);
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LocalFree(pPal);
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ghpalOld = SelectPalette(hdc, ghPalette, FALSE);
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n = RealizePalette(hdc);
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}
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}
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BOOL bSetupPixelFormat(HDC hdc)
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{
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PIXELFORMATDESCRIPTOR pfd, *ppfd;
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int pixelformat;
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ppfd = &pfd;
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ppfd->nSize = sizeof(PIXELFORMATDESCRIPTOR);
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ppfd->nVersion = 1;
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ppfd->dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
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ppfd->dwLayerMask = PFD_MAIN_PLANE;
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ppfd->iPixelType = PFD_TYPE_RGBA;
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ppfd->cColorBits = 24;
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ppfd->cDepthBits = 16; //GLX_DEPTH_SIZE
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ppfd->cRedBits = 8; //GLX_RED_SIZE
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ppfd->cRedShift = 0;
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ppfd->cGreenBits = 8; //GLX_GREEN_SIZE
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ppfd->cGreenShift = 8;
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ppfd->cBlueBits = 8; //GLX_BLUE_SIZE
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ppfd->cBlueShift = 16;
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ppfd->cAlphaBits = 0;
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ppfd->cAlphaShift = 0;
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ppfd->cAccumBits = 0; //ACCUM NOT SUPPORTED
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ppfd->cAccumRedBits = 0; //GLX_ACCUM_RED_SIZE
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ppfd->cAccumGreenBits = 0; //GLX_ACCUM_GREEN_SIZE
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ppfd->cAccumBlueBits = 0; //GLX_ACCUM_BLUE_SIZE
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ppfd->cAccumAlphaBits = 0; //GLX_ACCUM_ALPHA_SIZE
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ppfd->cStencilBits = 24; //GLX_STENCIL_SIZE
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ppfd->cAuxBuffers = 0;
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ppfd->bReserved = 0;
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ppfd->dwVisibleMask =
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ppfd->dwDamageMask = 0;
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pixelformat = ChoosePixelFormat(hdc, ppfd);
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if ( (pixelformat = ChoosePixelFormat(hdc, ppfd)) == 0 )
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{
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MessageBox(NULL, "ChoosePixelFormat failed", "Error", MB_OK);
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return FALSE;
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}
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if (SetPixelFormat(hdc, pixelformat, ppfd) == FALSE)
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{
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MessageBox(NULL, "SetPixelFormat failed", "Error", MB_OK);
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return FALSE;
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}
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CreateRGBPalette(hdc);
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return TRUE;
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}
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