// ============================================================================ // demo.c - Demonstration of using Windows 3.x display drivers from DOS // // This program loads a Windows 3.x accelerated display driver (.DRV file) // and uses its hardware-accelerated functions to draw on screen. // // Usage: demo [-d] // -d Enable debug output // // Example: // demo vga.drv // demo -d s3trio.drv // ============================================================================ #include #include #include #include #include #include #include "win31drv/windrv.h" #include "win31drv/wintypes.h" #include "win31drv/log.h" __attribute__((noinline)) static void demoDrawing(WdrvHandleT drv); static void printDriverInfo(WdrvHandleT drv); static void printUsage(const char *progName); static void setupPalette(WdrvHandleT drv); int main(int argc, char *argv[]) { const char *driverPath = NULL; bool debug = false; // Parse arguments for (int i = 1; i < argc; i++) { if (strcmp(argv[i], "-d") == 0) { debug = true; } else if (argv[i][0] != '-') { driverPath = argv[i]; } else { printUsage(argv[0]); return 1; } } if (!driverPath) { printUsage(argv[0]); return 1; } logInit("OUTPUT.LOG"); // Initialize the library logMsg("Initializing windrv library...\n"); int32_t err = wdrvInit(); if (err != WDRV_OK) { logErr("Failed to initialize: %s\n", wdrvGetLastErrorString()); return 1; } if (debug) { wdrvSetDebug(true); } // Load the driver logMsg("Loading driver: %s\n", driverPath); WdrvHandleT drv = wdrvLoadDriver(driverPath); if (!drv) { logErr("Failed to load driver: %s\n", wdrvGetLastErrorString()); wdrvShutdown(); return 1; } // Print driver info printDriverInfo(drv); // Redirect stdout to the log file before entering SVGA mode. // In graphics mode, console output through INT 21h can crash // because the console handler tries to access VGA text memory // that's now part of the SVGA framebuffer. freopen("OUTPUT.LOG", "a", stdout); // Enable the driver (set video mode) logMsg("Enabling driver...\n"); err = wdrvEnable(drv, 0, 0, 0); // Use driver defaults if (err != WDRV_OK) { logErr("Failed to enable driver: %s\n", wdrvGetLastErrorString()); wdrvUnloadDriver(drv); wdrvShutdown(); return 1; } // Set up a 256-color palette via the driver's SetPalette DDI. // This updates both the driver's internal color table (used by // RealizeObject for color matching) and the VGA DAC hardware. setupPalette(drv); // Run drawing demos demoDrawing(drv); logMsg("Drawing complete.\n"); // Disable the driver (restore text mode) logMsg("Calling wdrvDisable...\n"); err = wdrvDisable(drv); if (err != WDRV_OK) { logMsg("wdrvDisable failed (err=%d), forcing text mode via INT 10h\n", (int)err); __dpmi_regs dr; memset(&dr, 0, sizeof(dr)); dr.x.ax = 0x0003; // INT 10h AH=00 AL=03: set 80x25 text mode __dpmi_int(0x10, &dr); } // Clean up logMsg("Unloading driver...\n"); wdrvUnloadDriver(drv); wdrvShutdown(); logMsg("Done.\n"); logShutdown(); return 0; } static void printUsage(const char *progName) { logErr("Usage: %s [-d] \n", progName); logErr(" -d Enable debug output\n"); logErr("\nLoads a Windows 3.x display driver and demonstrates\n"); logErr("its accelerated drawing functions from DOS.\n"); } static void printDriverInfo(WdrvHandleT drv) { WdrvInfoT info; wdrvGetInfo(drv, &info); logMsg("\n=== Driver Information ===\n"); logMsg(" Name: %s\n", info.driverName); logMsg(" Version: %u.%u\n", info.driverVersion >> 8, info.driverVersion & 0xFF); logMsg(" Resolution: %" PRId32 "x%" PRId32 "\n", info.maxWidth, info.maxHeight); logMsg(" Color depth: %" PRId32 " bpp\n", info.maxBpp); logMsg(" Colors: %" PRId32 "\n", info.numColors); logMsg(" Raster caps: 0x%04" PRIX32 "\n", info.rasterCaps); logMsg(" Capabilities:\n"); logMsg(" BitBlt: %s\n", info.hasBitBlt ? "yes" : "no"); logMsg(" Output: %s\n", info.hasOutput ? "yes" : "no"); logMsg(" Pixel: %s\n", info.hasPixel ? "yes" : "no"); logMsg(" StretchBlt: %s\n", info.hasStretchBlt ? "yes" : "no"); logMsg(" ExtTextOut: %s\n", info.hasExtTextOut ? "yes" : "no"); logMsg(" SetPalette: %s\n", info.hasSetPalette ? "yes" : "no"); logMsg(" SetCursor: %s\n", info.hasSetCursor ? "yes" : "no"); logMsg(" MoveCursor: %s\n", info.hasMoveCursor ? "yes" : "no"); logMsg(" ScanLR: %s\n", info.hasScanLR ? "yes" : "no"); logMsg(" GetCharWidth:%s\n", info.hasGetCharWidth ? "yes" : "no"); logMsg(" CreateBitmap:%s\n", info.hasCreateBitmap ? "yes" : "no"); } // noinline: when inlined into main with -O2, the optimizer mishandles // callee-saved registers across the thunk calls in the Demo 2 → Demo 3 // transition, causing the handle pointer to be corrupted. __attribute__((noinline)) static void demoDrawing(WdrvHandleT drv) { WdrvInfoT info; wdrvGetInfo(drv, &info); int16_t screenW = (int16_t)info.maxWidth; int16_t screenH = (int16_t)info.maxHeight; if (screenW == 0) { screenW = 640; } if (screenH == 0) { screenH = 480; } logMsg("demoDrawing: screenW=%d screenH=%d hasBitBlt=%d hasOutput=%d hasPixel=%d\n", screenW, screenH, info.hasBitBlt, info.hasOutput, info.hasPixel); // Demo 1: Fill rectangles if (info.hasBitBlt) { logMsg("Demo 1: Fill rectangles\n"); // Clear screen to white wdrvFillRect(drv, 0, 0, screenW, screenH, MAKE_RGB(255, 255, 255)); static const uint32_t vgaColors[] = { MAKE_RGB( 0, 0, 0), // black MAKE_RGB( 0, 0, 255), // blue MAKE_RGB( 0, 255, 0), // green MAKE_RGB( 0, 255, 255), // cyan MAKE_RGB(255, 0, 0), // red MAKE_RGB(255, 0, 255), // magenta MAKE_RGB(255, 255, 0), // yellow MAKE_RGB(170, 170, 170), // light gray MAKE_RGB( 85, 85, 85), // dark gray MAKE_RGB( 85, 85, 255), // light blue MAKE_RGB( 85, 255, 85), // light green MAKE_RGB( 85, 255, 255), // light cyan MAKE_RGB(255, 85, 85), // light red MAKE_RGB(255, 85, 255), // light magenta MAKE_RGB(255, 255, 85), // yellow-ish MAKE_RGB(128, 128, 128), // mid gray }; int16_t boxW = screenW / 4; int16_t boxH = screenH / 4; for (int16_t row = 0; row < 4; row++) { for (int16_t col = 0; col < 4; col++) { int idx = row * 4 + col; wdrvFillRect(drv, col * boxW + 4, row * boxH + 4, boxW - 8, boxH - 8, vgaColors[idx]); } } logMsg(" Drew %d colored rectangles\n", 16); wdrvScreenshot(drv, "DEMO01.PNG"); } // Demo 2: Draw pixel patterns if (info.hasPixel) { logMsg("Demo 2: Pixel patterns (8x8)\n"); int pixCount = 0; for (int16_t y = 0; y < 8 && y < screenH; y++) { for (int16_t x = 0; x < 8 && x < screenW; x++) { uint8_t r = (uint8_t)(x * 32); uint8_t g = (uint8_t)(y * 32); uint8_t b = (uint8_t)((x + y) * 16); wdrvSetPixel(drv, x + screenW - 18, y + 10, MAKE_RGB(r, g, b)); pixCount++; } } logMsg(" Drew %d pixels\n", pixCount); wdrvScreenshot(drv, "DEMO02.PNG"); } // Demo 3: Draw lines using Output (polyline with realized pen) if (info.hasOutput) { logMsg("Demo 3: Lines (starburst)\n"); int16_t cx = screenW / 2; int16_t cy = screenH / 2; int16_t radius = (screenH < screenW ? screenH : screenW) / 3; int lineCount = 0; for (int angle = 0; angle < 360; angle += 15) { int32_t dx = 0; int32_t dy = 0; int a = angle % 360; int qa = a % 90; int32_t s = (int32_t)qa * radius / 90; int32_t c = (int32_t)(90 - qa) * radius / 90; if (a < 90) { dx = s; dy = -c; } else if (a < 180) { dx = c; dy = s; } else if (a < 270) { dx = -s; dy = c; } else { dx = -c; dy = -s; } Point16T pts[2]; pts[0].x = cx; pts[0].y = cy; pts[1].x = (int16_t)(cx + dx); pts[1].y = (int16_t)(cy + dy); uint32_t lineColor = MAKE_RGB( (uint8_t)(angle * 255 / 360), (uint8_t)(255 - angle * 255 / 360), 128); wdrvPolyline(drv, pts, 2, lineColor); lineCount++; } logMsg(" Drew %d lines\n", lineCount); wdrvScreenshot(drv, "DEMO03.PNG"); } // Demo 4: Screen-to-screen blit test if (info.hasBitBlt) { logMsg("Demo 4: Screen-to-screen blit\n"); WdrvBitBltParamsT bp; memset(&bp, 0, sizeof(bp)); bp.srcX = 0; bp.srcY = 0; bp.dstX = screenW / 2; bp.dstY = screenH / 2; bp.width = screenW / 4; bp.height = screenH / 4; bp.rop3 = SRCCOPY; wdrvBitBlt(drv, &bp); logMsg(" Screen blit done\n"); wdrvScreenshot(drv, "DEMO04.PNG"); } // Demo 5: Text output using ExtTextOut if (info.hasExtTextOut) { logMsg("Demo 5: ExtTextOut text rendering\n"); int32_t ret; // Opaque text: white on blue (built-in font via NULL) const char *msg1 = "Hello from ExtTextOut!"; ret = wdrvExtTextOut(drv, 10, 10, msg1, (int16_t)strlen(msg1), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 170), true, NULL); logMsg(" msg1 ret=%" PRId32 "\n", ret); // Opaque text: yellow on dark red const char *msg2 = "Win3.x DDI Text Output"; ret = wdrvExtTextOut(drv, 10, 30, msg2, (int16_t)strlen(msg2), MAKE_RGB(255, 255, 0), MAKE_RGB(170, 0, 0), true, NULL); logMsg(" msg2 ret=%" PRId32 "\n", ret); // Transparent text: green on existing background const char *msg3 = "Transparent mode"; ret = wdrvExtTextOut(drv, 10, 50, msg3, (int16_t)strlen(msg3), MAKE_RGB(0, 255, 0), MAKE_RGB(0, 0, 0), false, NULL); logMsg(" msg3 ret=%" PRId32 "\n", ret); // Show resolution info char buf[64]; int len = sprintf(buf, "Mode: %dx%d", screenW, screenH); ret = wdrvExtTextOut(drv, 10, 70, buf, (int16_t)len, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), true, NULL); logMsg(" msg4 ret=%" PRId32 "\n", ret); logMsg(" Text output done\n"); wdrvScreenshot(drv, "DEMO05.PNG"); } // Demo 6: Multiple loaded fonts if (info.hasExtTextOut) { logMsg("Demo 6: Loaded fonts from .FON files\n"); int32_t ret; // Load fonts from .FON files WdrvFontT courFont = wdrvLoadFontFon("COURE.FON", 1); // 9x16 Courier WdrvFontT sansFont = wdrvLoadFontFon("SSERIFE.FON", 0); // MS Sans Serif WdrvFontT sysFont = wdrvLoadFontFon("VGASYS.FON", 0); // System int16_t textY = 100; if (courFont) { const char *msg = "Courier: The quick brown fox jumps over the lazy dog"; ret = wdrvExtTextOut(drv, 10, textY, msg, (int16_t)strlen(msg), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 128), true, courFont); logMsg(" Courier ret=%" PRId32 "\n", ret); textY += 20; } else { logMsg(" COURE.FON not loaded\n"); } if (sansFont) { const char *msg = "Sans Serif: The quick brown fox jumps over the lazy dog"; ret = wdrvExtTextOut(drv, 10, textY, msg, (int16_t)strlen(msg), MAKE_RGB(255, 255, 0), MAKE_RGB(128, 0, 0), true, sansFont); logMsg(" Sans ret=%" PRId32 "\n", ret); textY += 20; } else { logMsg(" SSERIFE.FON not loaded\n"); } if (sysFont) { const char *msg = "System: The quick brown fox jumps over the lazy dog"; ret = wdrvExtTextOut(drv, 10, textY, msg, (int16_t)strlen(msg), MAKE_RGB(0, 255, 255), MAKE_RGB(0, 0, 0), true, sysFont); logMsg(" System ret=%" PRId32 "\n", ret); textY += 20; } else { logMsg(" VGASYS.FON not loaded\n"); } // Built-in font for comparison const char *msg = "Built-in: The quick brown fox jumps over the lazy dog"; ret = wdrvExtTextOut(drv, 10, textY, msg, (int16_t)strlen(msg), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 128, 0), true, NULL); logMsg(" Built-in ret=%" PRId32 "\n", ret); wdrvUnloadFont(courFont); wdrvUnloadFont(sansFont); wdrvUnloadFont(sysFont); logMsg(" Font demo done\n"); wdrvScreenshot(drv, "DEMO06.PNG"); } // Demo 7: TrueType font rendering if (info.hasExtTextOut) { logMsg("Demo 7: TrueType fonts\n"); int32_t ret; int16_t textY = 180; WdrvFontT ttfSmall = wdrvLoadFontTtf("LIBSANS.TTF", 16); WdrvFontT ttfMedium = wdrvLoadFontTtf("LIBSERIF.TTF", 20); WdrvFontT ttfLarge = wdrvLoadFontTtf("LIBMONO.TTF", 24); if (ttfSmall) { const char *msg = "TrueType Sans 16pt: The quick brown fox jumps over the lazy dog"; ret = wdrvExtTextOut(drv, 10, textY, msg, (int16_t)strlen(msg), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 128), true, ttfSmall); logMsg(" TTF small ret=%" PRId32 "\n", ret); textY += 22; } else { logMsg(" LIBSANS.TTF 16pt not loaded\n"); } if (ttfMedium) { const char *msg = "TrueType Serif 20pt: ABCDEFGHIJKLMNOPQRSTUVWXYZ"; ret = wdrvExtTextOut(drv, 10, textY, msg, (int16_t)strlen(msg), MAKE_RGB(255, 255, 0), MAKE_RGB(128, 0, 0), true, ttfMedium); logMsg(" TTF medium ret=%" PRId32 "\n", ret); textY += 26; } else { logMsg(" LIBSERIF.TTF 20pt not loaded\n"); } if (ttfLarge) { const char *msg = "TrueType Mono 24pt: 0123456789"; ret = wdrvExtTextOut(drv, 10, textY, msg, (int16_t)strlen(msg), MAKE_RGB(0, 255, 255), MAKE_RGB(0, 0, 0), true, ttfLarge); logMsg(" TTF large ret=%" PRId32 "\n", ret); textY += 30; } else { logMsg(" LIBMONO.TTF 24pt not loaded\n"); } wdrvUnloadFont(ttfSmall); wdrvUnloadFont(ttfMedium); wdrvUnloadFont(ttfLarge); logMsg(" TTF demo done\n"); wdrvScreenshot(drv, "DEMO07.PNG"); } // Demo 8: Color text showcase if (info.hasBitBlt && info.hasExtTextOut) { logMsg("Demo 8: Color text showcase\n"); int32_t ret; // Clear screen to black WdrvBitBltParamsT bp; memset(&bp, 0, sizeof(bp)); bp.width = screenW; bp.height = screenH; bp.rop3 = BLACKNESS; wdrvBitBlt(drv, &bp); // Load fonts for this demo WdrvFontT ttfSans20 = wdrvLoadFontTtf("LIBSANS.TTF", 20); WdrvFontT ttfSans16 = wdrvLoadFontTtf("LIBSANS.TTF", 16); WdrvFontT courFont = wdrvLoadFontFon("COURE.FON", 1); WdrvFontT sansFont = wdrvLoadFontFon("SSERIFE.FON", 0); WdrvFontT ttfSerif16 = wdrvLoadFontTtf("LIBSERIF.TTF", 16); // --- Title row (y=10) --- if (ttfSans20) { const char *title = "Color Text Demo"; ret = wdrvExtTextOut(drv, 10, 10, title, (int16_t)strlen(title), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, ttfSans20); logMsg(" title ret=%" PRId32 "\n", ret); } // --- Foreground color row (y=40) --- if (ttfSans16) { static const struct { const char *text; uint32_t color; } fgItems[] = { { "Red", MAKE_RGB(255, 0, 0) }, { "Green", MAKE_RGB( 0, 255, 0) }, { "Blue", MAKE_RGB( 0, 128, 255) }, { "Yellow", MAKE_RGB(255, 255, 0) }, { "Cyan", MAKE_RGB( 0, 255, 255) }, { "Magenta", MAKE_RGB(255, 0, 255) }, { "White", MAKE_RGB(255, 255, 255) }, }; int16_t fx = 10; for (int i = 0; i < 7; i++) { ret = wdrvExtTextOut(drv, fx, 40, fgItems[i].text, (int16_t)strlen(fgItems[i].text), fgItems[i].color, MAKE_RGB(0, 0, 0), false, ttfSans16); logMsg(" fg[%d] ret=%" PRId32 "\n", i, ret); fx += (int16_t)(strlen(fgItems[i].text) * 10 + 16); } } // --- Opaque background row (y=65) --- if (ttfSans16) { static const struct { const char *text; uint32_t fg; uint32_t bg; } bgItems[] = { { "White on Blue", MAKE_RGB(255, 255, 255), MAKE_RGB( 0, 0, 200) }, { "Black on Yellow", MAKE_RGB( 0, 0, 0), MAKE_RGB(255, 255, 0) }, { "White on Red", MAKE_RGB(255, 255, 255), MAKE_RGB(200, 0, 0) }, { "Black on Green", MAKE_RGB( 0, 0, 0), MAKE_RGB( 0, 200, 0) }, { "Yellow on Magenta", MAKE_RGB(255, 255, 0), MAKE_RGB(180, 0, 180) }, { "Black on Cyan", MAKE_RGB( 0, 0, 0), MAKE_RGB( 0, 200, 200) }, }; int16_t bx = 10; for (int i = 0; i < 6; i++) { ret = wdrvExtTextOut(drv, bx, 65, bgItems[i].text, (int16_t)strlen(bgItems[i].text), bgItems[i].fg, bgItems[i].bg, true, ttfSans16); logMsg(" bg[%d] ret=%" PRId32 "\n", i, ret); bx += (int16_t)(strlen(bgItems[i].text) * 9 + 12); } } // --- Transparent over colored rectangles (y=95) --- // Dark blue strip wdrvFillRect(drv, 10, 95, 600, 25, MAKE_RGB(0, 0, 128)); if (ttfSans16) { const char *msg = "Transparent text over dark blue rectangle"; ret = wdrvExtTextOut(drv, 20, 98, msg, (int16_t)strlen(msg), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, ttfSans16); logMsg(" trans1 ret=%" PRId32 "\n", ret); } // Dark green strip wdrvFillRect(drv, 10, 125, 600, 25, MAKE_RGB(0, 128, 0)); if (ttfSans16) { const char *msg = "Yellow text over dark green rectangle"; ret = wdrvExtTextOut(drv, 20, 128, msg, (int16_t)strlen(msg), MAKE_RGB(255, 255, 0), MAKE_RGB(0, 0, 0), false, ttfSans16); logMsg(" trans2 ret=%" PRId32 "\n", ret); } // --- Multiple fonts in color (y=160) --- { int16_t fy = 160; const char *fontMsg = "The quick brown fox jumps over the lazy dog"; int16_t fontLen = (int16_t)strlen(fontMsg); // Built-in: white on dark red ret = wdrvExtTextOut(drv, 10, fy, fontMsg, fontLen, MAKE_RGB(255, 255, 255), MAKE_RGB(170, 0, 0), true, NULL); logMsg(" font-builtin ret=%" PRId32 "\n", ret); fy += 20; // Courier .FON: cyan on black if (courFont) { ret = wdrvExtTextOut(drv, 10, fy, fontMsg, fontLen, MAKE_RGB(0, 255, 255), MAKE_RGB(0, 0, 0), true, courFont); logMsg(" font-cour ret=%" PRId32 "\n", ret); fy += 20; } // Sans .FON: yellow on dark blue if (sansFont) { ret = wdrvExtTextOut(drv, 10, fy, fontMsg, fontLen, MAKE_RGB(255, 255, 0), MAKE_RGB(0, 0, 128), true, sansFont); logMsg(" font-sans ret=%" PRId32 "\n", ret); fy += 20; } // TTF Sans: green on dark gray if (ttfSans16) { ret = wdrvExtTextOut(drv, 10, fy, fontMsg, fontLen, MAKE_RGB(0, 255, 0), MAKE_RGB(64, 64, 64), true, ttfSans16); logMsg(" font-ttfsans ret=%" PRId32 "\n", ret); fy += 20; } // TTF Serif: magenta on dark green if (ttfSerif16) { ret = wdrvExtTextOut(drv, 10, fy, fontMsg, fontLen, MAKE_RGB(255, 0, 255), MAKE_RGB(0, 100, 0), true, ttfSerif16); logMsg(" font-ttfserif ret=%" PRId32 "\n", ret); } } // --- Color palette grid (y=280) --- { static const struct { const char *name; uint32_t color; } fgPal[] = { { "Bk", MAKE_RGB( 0, 0, 0) }, { "Rd", MAKE_RGB(255, 0, 0) }, { "Gn", MAKE_RGB( 0, 255, 0) }, { "Bl", MAKE_RGB( 0, 128, 255) }, { "Yw", MAKE_RGB(255, 255, 0) }, { "Cn", MAKE_RGB( 0, 255, 255) }, { "Mg", MAKE_RGB(255, 0, 255) }, { "Wh", MAKE_RGB(255, 255, 255) }, }; static const struct { const char *name; uint32_t color; } bgPal[] = { { "Black", MAKE_RGB( 0, 0, 0) }, { "Blue", MAKE_RGB( 0, 0, 200) }, { "Red", MAKE_RGB(200, 0, 0) }, { "White", MAKE_RGB(255, 255, 255) }, }; int16_t gy = 280; // Column headers (background names) int16_t hdrX = 10 + 30; // offset past row labels for (int bg = 0; bg < 4; bg++) { ret = wdrvExtTextOut(drv, (int16_t)(hdrX + bg * 75), gy, bgPal[bg].name, (int16_t)strlen(bgPal[bg].name), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } gy += 18; // Grid cells for (int fg = 0; fg < 8; fg++) { // Row label ret = wdrvExtTextOut(drv, 10, gy, fgPal[fg].name, (int16_t)strlen(fgPal[fg].name), MAKE_RGB(170, 170, 170), MAKE_RGB(0, 0, 0), false, NULL); for (int bg = 0; bg < 4; bg++) { ret = wdrvExtTextOut(drv, (int16_t)(40 + bg * 75), gy, "Aa", 2, fgPal[fg].color, bgPal[bg].color, true, NULL); } gy += 18; } logMsg(" palette grid done\n"); } wdrvUnloadFont(ttfSans20); wdrvUnloadFont(ttfSans16); wdrvUnloadFont(courFont); wdrvUnloadFont(sansFont); wdrvUnloadFont(ttfSerif16); logMsg(" Color text demo done\n"); wdrvScreenshot(drv, "DEMO08.PNG"); } // Demo 9: ROP3 Operations if (info.hasBitBlt) { logMsg("Demo 9: ROP3 Operations\n"); int32_t ret; WdrvBitBltParamsT bp; // Clear screen memset(&bp, 0, sizeof(bp)); bp.width = screenW; bp.height = screenH; bp.rop3 = BLACKNESS; wdrvBitBlt(drv, &bp); // Title if (info.hasExtTextOut) { const char *title = "Demo 9: ROP3 Operations"; wdrvExtTextOut(drv, 10, 10, title, (int16_t)strlen(title), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } // Layout: 5 columns, 3 rows // Row 1 (r1): source color A (also used as BitBlt source) // Row 2 (r2): operand color B // Row 3 (r3): ROP result // S3TRIO's accelerated BitBlt corrupts source VRAM during source- // dependent ROPs, so each source rect is redrawn after the ROP. int16_t bx = 20; int16_t by = 40; int16_t bw = 100; int16_t bh = 50; int16_t gap = 5; int16_t col = bw + 20; int16_t r1 = by; int16_t r2 = by + bh + gap; int16_t r3 = by + 2 * (bh + gap); // Column 0: DSTINVERT (no source needed) wdrvFillRect(drv, bx, r1, bw, bh, MAKE_RGB(255, 0, 0)); memset(&bp, 0, sizeof(bp)); bp.dstX = bx + 10; bp.dstY = r1 + 10; bp.width = bw - 20; bp.height = bh - 20; bp.rop3 = DSTINVERT; ret = wdrvBitBlt(drv, &bp); logMsg(" DSTINVERT ret=%" PRId32 "\n", ret); if (info.hasExtTextOut) { wdrvExtTextOut(drv, bx, r3 + bh + 5, "DSTINVERT", 9, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } // Column 1: SRCINVERT (green XOR yellow) // Fill source (r1) with green, copy to result (r3) via SRCCOPY wdrvFillRect(drv, bx + col, r1, bw, bh, MAKE_RGB(0, 255, 0)); memset(&bp, 0, sizeof(bp)); bp.srcX = bx + col; bp.srcY = r1; bp.dstX = bx + col; bp.dstY = r3; bp.width = bw; bp.height = bh; bp.rop3 = SRCCOPY; wdrvBitBlt(drv, &bp); wdrvFillRect(drv, bx + col, r1, bw, bh, MAKE_RGB(0, 255, 0)); // Fill source (r1) with yellow, SRCINVERT into result (r3) wdrvFillRect(drv, bx + col, r1, bw, bh, MAKE_RGB(255, 255, 0)); memset(&bp, 0, sizeof(bp)); bp.srcX = bx + col; bp.srcY = r1; bp.dstX = bx + col; bp.dstY = r3; bp.width = bw; bp.height = bh; bp.rop3 = SRCINVERT; ret = wdrvBitBlt(drv, &bp); logMsg(" SRCINVERT ret=%" PRId32 "\n", ret); // Redraw display rows (source may be corrupted by S3TRIO) wdrvFillRect(drv, bx + col, r1, bw, bh, MAKE_RGB(0, 255, 0)); wdrvFillRect(drv, bx + col, r2, bw, bh, MAKE_RGB(255, 255, 0)); if (info.hasExtTextOut) { wdrvExtTextOut(drv, bx + col, r3 + bh + 5, "SRCINVERT", 9, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } // Column 2: NOTSRCCOPY (NOT blue) wdrvFillRect(drv, bx + 2 * col, r1, bw, bh, MAKE_RGB(0, 0, 255)); memset(&bp, 0, sizeof(bp)); bp.srcX = bx + 2 * col; bp.srcY = r1; bp.dstX = bx + 2 * col; bp.dstY = r3; bp.width = bw; bp.height = bh; bp.rop3 = NOTSRCCOPY; ret = wdrvBitBlt(drv, &bp); logMsg(" NOTSRCCOPY ret=%" PRId32 "\n", ret); // Redraw source display wdrvFillRect(drv, bx + 2 * col, r1, bw, bh, MAKE_RGB(0, 0, 255)); if (info.hasExtTextOut) { wdrvExtTextOut(drv, bx + 2 * col, r3 + bh + 5, "NOTSRCCOPY", 10, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } // Column 3: SRCAND (yellow AND cyan) // Fill result (r3) with cyan, fill source (r1) with yellow, SRCAND wdrvFillRect(drv, bx + 3 * col, r3, bw, bh, MAKE_RGB(0, 255, 255)); wdrvFillRect(drv, bx + 3 * col, r1, bw, bh, MAKE_RGB(255, 255, 0)); memset(&bp, 0, sizeof(bp)); bp.srcX = bx + 3 * col; bp.srcY = r1; bp.dstX = bx + 3 * col; bp.dstY = r3; bp.width = bw; bp.height = bh; bp.rop3 = SRCAND; ret = wdrvBitBlt(drv, &bp); logMsg(" SRCAND ret=%" PRId32 "\n", ret); // Redraw display rows wdrvFillRect(drv, bx + 3 * col, r1, bw, bh, MAKE_RGB(255, 255, 0)); wdrvFillRect(drv, bx + 3 * col, r2, bw, bh, MAKE_RGB(0, 255, 255)); if (info.hasExtTextOut) { wdrvExtTextOut(drv, bx + 3 * col, r3 + bh + 5, "SRCAND", 6, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } // Column 4: SRCPAINT (red OR blue) // Fill result (r3) with blue, fill source (r1) with red, SRCPAINT wdrvFillRect(drv, bx + 4 * col, r3, bw, bh, MAKE_RGB(0, 0, 255)); wdrvFillRect(drv, bx + 4 * col, r1, bw, bh, MAKE_RGB(255, 0, 0)); memset(&bp, 0, sizeof(bp)); bp.srcX = bx + 4 * col; bp.srcY = r1; bp.dstX = bx + 4 * col; bp.dstY = r3; bp.width = bw; bp.height = bh; bp.rop3 = SRCPAINT; ret = wdrvBitBlt(drv, &bp); logMsg(" SRCPAINT ret=%" PRId32 "\n", ret); // Redraw display rows wdrvFillRect(drv, bx + 4 * col, r1, bw, bh, MAKE_RGB(255, 0, 0)); wdrvFillRect(drv, bx + 4 * col, r2, bw, bh, MAKE_RGB(0, 0, 255)); if (info.hasExtTextOut) { wdrvExtTextOut(drv, bx + 4 * col, r3 + bh + 5, "SRCPAINT", 8, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } logMsg(" ROP3 demo done\n"); wdrvScreenshot(drv, "DEMO09.PNG"); } // Demo 10: ScanLR + Flood Fill if (info.hasBitBlt) { logMsg("Demo 10: ScanLR + Flood Fill\n"); WdrvBitBltParamsT bp; // Clear screen memset(&bp, 0, sizeof(bp)); bp.width = screenW; bp.height = screenH; bp.rop3 = BLACKNESS; wdrvBitBlt(drv, &bp); if (info.hasExtTextOut) { const char *title = "Demo 10: ScanLR + Flood Fill"; wdrvExtTextOut(drv, 10, 10, title, (int16_t)strlen(title), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } // Draw outlined shapes using wdrvRectangle if (info.hasOutput) { wdrvRectangle(drv, 50, 50, 150, 100, MAKE_RGB(255, 255, 255)); wdrvRectangle(drv, 250, 50, 150, 100, MAKE_RGB(255, 255, 0)); wdrvRectangle(drv, 450, 50, 150, 100, MAKE_RGB(0, 255, 255)); } // Try flood fill (FB-based, skips multi-plane VGA) int32_t ret = wdrvFloodFill(drv, 125, 100, MAKE_RGB(255, 0, 0)); logMsg(" FloodFill rect1 ret=%" PRId32 "\n", ret); ret = wdrvFloodFill(drv, 325, 100, MAKE_RGB(0, 255, 0)); logMsg(" FloodFill rect2 ret=%" PRId32 "\n", ret); ret = wdrvFloodFill(drv, 525, 100, MAKE_RGB(0, 0, 255)); logMsg(" FloodFill rect3 ret=%" PRId32 "\n", ret); if (info.hasExtTextOut) { wdrvExtTextOut(drv, 80, 155, "Red Fill", 8, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); wdrvExtTextOut(drv, 280, 155, "Green Fill", 10, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); wdrvExtTextOut(drv, 480, 155, "Blue Fill", 9, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } // Test ScanLR if available if (info.hasScanLR) { int16_t leftX = wdrvScanLR(drv, 125, 100, MAKE_RGB(255, 0, 0), WDRV_SCAN_LEFT); int16_t rightX = wdrvScanLR(drv, 125, 100, MAKE_RGB(255, 0, 0), WDRV_SCAN_RIGHT); logMsg(" ScanLR at (125,100): left=%d right=%d\n", leftX, rightX); if (info.hasExtTextOut) { char buf[64]; int len = sprintf(buf, "ScanLR: L=%d R=%d", leftX, rightX); wdrvExtTextOut(drv, 10, 200, buf, (int16_t)len, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } } logMsg(" Flood fill demo done\n"); wdrvScreenshot(drv, "DEMO10.PNG"); } // Demo 11: Text Measurement if (info.hasExtTextOut && info.hasGetCharWidth) { logMsg("Demo 11: Text Measurement\n"); WdrvBitBltParamsT bp; // Clear screen memset(&bp, 0, sizeof(bp)); bp.width = screenW; bp.height = screenH; bp.rop3 = BLACKNESS; wdrvBitBlt(drv, &bp); if (info.hasExtTextOut) { const char *title = "Demo 11: Text Measurement"; wdrvExtTextOut(drv, 10, 10, title, (int16_t)strlen(title), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } int16_t ty = 40; // Measure built-in font const char *testStr = "Hello, World!"; int16_t testLen = (int16_t)strlen(testStr); int32_t measuredW = wdrvMeasureText(drv, NULL, testStr, testLen); logMsg(" Built-in '%s' width=%" PRId32 "\n", testStr, measuredW); wdrvExtTextOut(drv, 10, ty, testStr, testLen, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 128), true, NULL); // Draw underline at measured width if (info.hasOutput) { Point16T pts[2]; pts[0].x = 10; pts[0].y = ty + 18; pts[1].x = 10 + (int16_t)measuredW; pts[1].y = ty + 18; wdrvPolyline(drv, pts, 2, MAKE_RGB(255, 0, 0)); } char buf[80]; int len = sprintf(buf, "Width = %" PRId32 " pixels", measuredW); wdrvExtTextOut(drv, 10 + (int16_t)measuredW + 10, ty, buf, (int16_t)len, MAKE_RGB(255, 255, 0), MAKE_RGB(0, 0, 0), false, NULL); ty += 30; // Measure TTF font WdrvFontT ttfFont = wdrvLoadFontTtf("LIBSANS.TTF", 16); if (ttfFont) { const char *ttfStr = "TrueType measurement test"; int16_t ttfLen = (int16_t)strlen(ttfStr); int32_t ttfW = wdrvMeasureText(drv, ttfFont, ttfStr, ttfLen); logMsg(" TTF '%s' width=%" PRId32 "\n", ttfStr, ttfW); wdrvExtTextOut(drv, 10, ty, ttfStr, ttfLen, MAKE_RGB(0, 255, 255), MAKE_RGB(0, 64, 64), true, ttfFont); if (info.hasOutput) { Point16T pts[2]; pts[0].x = 10; pts[0].y = ty + 20; pts[1].x = 10 + (int16_t)ttfW; pts[1].y = ty + 20; wdrvPolyline(drv, pts, 2, MAKE_RGB(255, 0, 0)); } len = sprintf(buf, "Width = %" PRId32 " pixels", ttfW); wdrvExtTextOut(drv, 10 + (int16_t)ttfW + 10, ty, buf, (int16_t)len, MAKE_RGB(255, 255, 0), MAKE_RGB(0, 0, 0), false, NULL); ty += 30; wdrvUnloadFont(ttfFont); } // Show individual char widths int16_t charWidths[26]; int32_t ret = wdrvGetCharWidths(drv, NULL, 'A', 'Z', charWidths); if (ret == WDRV_OK) { int16_t cx = 10; for (int ci = 0; ci < 26; ci++) { char ch[2] = { (char)('A' + ci), 0 }; wdrvExtTextOut(drv, cx, ty, ch, 1, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); cx += charWidths[ci]; } ty += 20; len = sprintf(buf, "Char widths A-Z from GetCharWidth DDI"); wdrvExtTextOut(drv, 10, ty, buf, (int16_t)len, MAKE_RGB(170, 170, 170), MAKE_RGB(0, 0, 0), false, NULL); } logMsg(" Text measurement demo done\n"); wdrvScreenshot(drv, "DEMO11.PNG"); } // Demo 12: Styled Pen Lines if (info.hasOutput) { logMsg("Demo 12: Styled Pen Lines\n"); WdrvBitBltParamsT bp; // Clear screen memset(&bp, 0, sizeof(bp)); bp.width = screenW; bp.height = screenH; bp.rop3 = BLACKNESS; wdrvBitBlt(drv, &bp); if (info.hasExtTextOut) { const char *title = "Demo 12: Styled Pen Lines"; wdrvExtTextOut(drv, 10, 10, title, (int16_t)strlen(title), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } static const struct { const char *name; int16_t style; } penStyles[] = { { "SOLID", WDRV_PEN_SOLID }, { "DASH", WDRV_PEN_DASH }, { "DOT", WDRV_PEN_DOT }, { "DASHDOT", WDRV_PEN_DASHDOT }, { "DASHDOTDOT", WDRV_PEN_DASHDOTDOT }, }; int16_t ly = 40; for (int si = 0; si < 5; si++) { // Draw horizontal line Point16T pts[2]; pts[0].x = 120; pts[0].y = ly + 8; pts[1].x = screenW - 20; pts[1].y = ly + 8; int32_t ret = wdrvPolylineEx(drv, pts, 2, MAKE_RGB(255, 255, 255), penStyles[si].style); logMsg(" %s ret=%" PRId32 "\n", penStyles[si].name, ret); if (info.hasExtTextOut) { wdrvExtTextOut(drv, 10, ly, penStyles[si].name, (int16_t)strlen(penStyles[si].name), MAKE_RGB(255, 255, 0), MAKE_RGB(0, 0, 0), false, NULL); } ly += 25; } // Draw styled rectangles ly += 10; if (info.hasExtTextOut) { wdrvExtTextOut(drv, 10, ly, "Styled Rectangles:", 18, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } ly += 20; int16_t rx = 20; for (int si = 0; si < 5; si++) { wdrvRectangleEx(drv, rx, ly, 100, 60, MAKE_RGB(0, 255, 255), penStyles[si].style); rx += 120; } logMsg(" Styled pen demo done\n"); wdrvScreenshot(drv, "DEMO12.PNG"); } // Demo 13: Pixel Buffer Blit if (info.hasBitBlt) { logMsg("Demo 13: Pixel Buffer Blit\n"); WdrvBitBltParamsT bp; // Clear screen memset(&bp, 0, sizeof(bp)); bp.width = screenW; bp.height = screenH; bp.rop3 = BLACKNESS; wdrvBitBlt(drv, &bp); if (info.hasExtTextOut) { const char *title = "Demo 13: Pixel Buffer Blit"; wdrvExtTextOut(drv, 10, 10, title, (int16_t)strlen(title), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } // Generate a 256-color gradient pattern int16_t patW = 256; int16_t patH = 200; uint8_t *pattern = (uint8_t *)malloc(patW * patH); if (pattern) { for (int16_t py = 0; py < patH; py++) { for (int16_t px = 0; px < patW; px++) { pattern[py * patW + px] = (uint8_t)((px + py) & 0xFF); } } int32_t ret = wdrvBlitPixels(drv, 20, 40, patW, patH, pattern, patW); logMsg(" BlitPixels gradient ret=%" PRId32 "\n", ret); free(pattern); } // Generate a color bars pattern int16_t barW = 256; int16_t barH = 100; uint8_t *bars = (uint8_t *)malloc(barW * barH); if (bars) { for (int16_t py = 0; py < barH; py++) { for (int16_t px = 0; px < barW; px++) { bars[py * barW + px] = (uint8_t)(px); } } int32_t ret = wdrvBlitPixels(drv, 300, 40, barW, barH, bars, barW); logMsg(" BlitPixels bars ret=%" PRId32 "\n", ret); free(bars); } if (info.hasExtTextOut) { wdrvExtTextOut(drv, 20, 250, "Gradient pattern", 16, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); wdrvExtTextOut(drv, 300, 250, "Color bars", 10, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } logMsg(" Pixel blit demo done\n"); wdrvScreenshot(drv, "DEMO13.PNG"); } // Demo 14: Hardware Cursor if (info.hasSetCursor && info.hasMoveCursor) { logMsg("Demo 14: Hardware Cursor\n"); WdrvBitBltParamsT bp; // Clear screen memset(&bp, 0, sizeof(bp)); bp.width = screenW; bp.height = screenH; bp.rop3 = BLACKNESS; wdrvBitBlt(drv, &bp); if (info.hasExtTextOut) { const char *title = "Demo 14: Hardware Cursor"; wdrvExtTextOut(drv, 10, 10, title, (int16_t)strlen(title), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); wdrvExtTextOut(drv, 10, 30, "Cursor shapes cycling automatically.", 36, MAKE_RGB(170, 170, 170), MAKE_RGB(0, 0, 0), false, NULL); } // Draw some background content wdrvFillRect(drv, 100, 100, 200, 200, MAKE_RGB(0, 0, 128)); wdrvFillRect(drv, 350, 100, 200, 200, MAKE_RGB(0, 128, 0)); static const WdrvCursorShapeE shapes[] = { WDRV_CURSOR_ARROW, WDRV_CURSOR_CROSSHAIR, WDRV_CURSOR_IBEAM, WDRV_CURSOR_HAND, }; static const char *shapeNames[] = { "Arrow", "Crosshair", "I-Beam", "Hand", }; for (int si = 0; si < 4; si++) { int32_t ret = wdrvSetCursor(drv, shapes[si]); logMsg(" SetCursor(%s) ret=%" PRId32 "\n", shapeNames[si], ret); if (info.hasExtTextOut) { // Clear label area wdrvFillRect(drv, 10, 50, 400, 20, MAKE_RGB(0, 0, 0)); char buf[64]; int len = sprintf(buf, "Cursor: %s", shapeNames[si]); wdrvExtTextOut(drv, 10, 50, buf, (int16_t)len, MAKE_RGB(255, 255, 0), MAKE_RGB(0, 0, 0), false, NULL); } // Animate cursor in a circle int16_t cx = screenW / 2; int16_t cy = screenH / 2; int16_t radius = 120; for (int angle = 0; angle < 360; angle += 5) { int a = angle % 360; int qa = a % 90; int32_t s = (int32_t)qa * radius / 90; int32_t c = (int32_t)(90 - qa) * radius / 90; int16_t mx = cx; int16_t my = cy; if (a < 90) { mx = (int16_t)(cx + s); my = (int16_t)(cy - c); } else if (a < 180) { mx = (int16_t)(cx + c); my = (int16_t)(cy + s); } else if (a < 270) { mx = (int16_t)(cx - s); my = (int16_t)(cy + c); } else { mx = (int16_t)(cx - c); my = (int16_t)(cy - s); } wdrvMoveCursor(drv, mx, my); // Small delay via port I/O for (int d = 0; d < 500; d++) { (void)inportb(0x80); } } } // Hide cursor wdrvSetCursor(drv, WDRV_CURSOR_NONE); logMsg(" Cursor demo done\n"); wdrvScreenshot(drv, "DEMO14.PNG"); } // Demo 15: Screen Save/Restore (via screen-to-screen BitBlt) if (info.hasBitBlt) { logMsg("Demo 15: Screen Save/Restore\n"); WdrvBitBltParamsT bp; // Clear screen memset(&bp, 0, sizeof(bp)); bp.width = screenW; bp.height = screenH; bp.rop3 = BLACKNESS; wdrvBitBlt(drv, &bp); if (info.hasExtTextOut) { const char *title = "Demo 15: Screen Save/Restore"; wdrvExtTextOut(drv, 10, 10, title, (int16_t)strlen(title), MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } // Draw source content at (20,40) int16_t saveX = 20; int16_t saveY = 40; int16_t saveW = 100; int16_t saveH = 80; wdrvFillRect(drv, saveX, saveY, saveW, saveH, MAKE_RGB(255, 0, 0)); wdrvFillRect(drv, saveX + 20, saveY + 10, 60, 60, MAKE_RGB(0, 255, 0)); wdrvFillRect(drv, saveX + 30, saveY + 20, 40, 30, MAKE_RGB(0, 0, 255)); if (info.hasExtTextOut) { wdrvExtTextOut(drv, saveX, saveY + saveH + 5, "Source", 6, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } // Save: blit source region to a hidden screen area (bottom of screen) int16_t stashY = screenH - saveH - 1; memset(&bp, 0, sizeof(bp)); bp.srcX = saveX; bp.srcY = saveY; bp.dstX = 0; bp.dstY = stashY; bp.width = saveW; bp.height = saveH; bp.rop3 = SRCCOPY; int32_t ret = wdrvBitBlt(drv, &bp); logMsg(" Save to stash(%d,%d) ret=%" PRId32 "\n", 0, stashY, ret); // Overwrite the source area wdrvFillRect(drv, saveX, saveY, saveW, saveH, MAKE_RGB(64, 64, 64)); if (info.hasExtTextOut) { wdrvExtTextOut(drv, saveX + 5, saveY + 35, "Cleared", 7, MAKE_RGB(255, 255, 255), MAKE_RGB(64, 64, 64), true, NULL); } // Restore: blit from stash to two different positions memset(&bp, 0, sizeof(bp)); bp.srcX = 0; bp.srcY = stashY; bp.dstX = 200; bp.dstY = saveY; bp.width = saveW; bp.height = saveH; bp.rop3 = SRCCOPY; ret = wdrvBitBlt(drv, &bp); logMsg(" Restore copy1 ret=%" PRId32 "\n", ret); memset(&bp, 0, sizeof(bp)); bp.srcX = 0; bp.srcY = stashY; bp.dstX = 350; bp.dstY = saveY; bp.width = saveW; bp.height = saveH; bp.rop3 = SRCCOPY; ret = wdrvBitBlt(drv, &bp); logMsg(" Restore copy2 ret=%" PRId32 "\n", ret); // Clear the stash area wdrvFillRect(drv, 0, stashY, saveW, saveH, MAKE_RGB(0, 0, 0)); if (info.hasExtTextOut) { wdrvExtTextOut(drv, 200, saveY + saveH + 5, "Copy 1", 6, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); wdrvExtTextOut(drv, 350, saveY + saveH + 5, "Copy 2", 6, MAKE_RGB(255, 255, 255), MAKE_RGB(0, 0, 0), false, NULL); } logMsg(" Screen save/restore done\n"); wdrvScreenshot(drv, "DEMO15.PNG"); } } static void setupPalette(WdrvHandleT drv) { // Set the standard Windows 3.1 default 256-color palette. // This is an 8R x 8G x 4B color cube with the 20 static system // colors overwriting indices 0-9 and 246-255. // Using a consistent palette ensures identical output across all // drivers regardless of their built-in default palettes. uint8_t pal[1024]; // 256 entries x 4 bytes (R, G, B, flags) // Generate 8R x 8G x 4B color cube for (int32_t b = 0; b < 4; b++) { for (int32_t g = 0; g < 8; g++) { for (int32_t r = 0; r < 8; r++) { int32_t idx = b * 64 + g * 8 + r; pal[idx * 4 + 0] = (uint8_t)(r * 0x20); pal[idx * 4 + 1] = (uint8_t)(g * 0x20); pal[idx * 4 + 2] = (uint8_t)(b * 0x40); pal[idx * 4 + 3] = 0; } } } // Overwrite first 10 entries with static system colors static const uint8_t sysFirst[10][3] = { { 0x00, 0x00, 0x00 }, // 0: Black { 0x80, 0x00, 0x00 }, // 1: Dark Red { 0x00, 0x80, 0x00 }, // 2: Dark Green { 0x80, 0x80, 0x00 }, // 3: Dark Yellow { 0x00, 0x00, 0x80 }, // 4: Dark Blue { 0x80, 0x00, 0x80 }, // 5: Dark Magenta { 0x00, 0x80, 0x80 }, // 6: Dark Cyan { 0xC0, 0xC0, 0xC0 }, // 7: Light Gray { 0xC0, 0xDC, 0xC0 }, // 8: Money Green { 0xA6, 0xCA, 0xF0 }, // 9: Sky Blue }; for (int32_t i = 0; i < 10; i++) { pal[i * 4 + 0] = sysFirst[i][0]; pal[i * 4 + 1] = sysFirst[i][1]; pal[i * 4 + 2] = sysFirst[i][2]; pal[i * 4 + 3] = 0; } // Overwrite last 10 entries (246-255) with static system colors static const uint8_t sysLast[10][3] = { { 0xFF, 0xFB, 0xF0 }, // 246: Cream { 0xA0, 0xA0, 0xA4 }, // 247: Medium Gray { 0x80, 0x80, 0x80 }, // 248: Dark Gray { 0xFF, 0x00, 0x00 }, // 249: Red { 0x00, 0xFF, 0x00 }, // 250: Green { 0xFF, 0xFF, 0x00 }, // 251: Yellow { 0x00, 0x00, 0xFF }, // 252: Blue { 0xFF, 0x00, 0xFF }, // 253: Magenta { 0x00, 0xFF, 0xFF }, // 254: Cyan { 0xFF, 0xFF, 0xFF }, // 255: White }; for (int32_t i = 0; i < 10; i++) { pal[(246 + i) * 4 + 0] = sysLast[i][0]; pal[(246 + i) * 4 + 1] = sysLast[i][1]; pal[(246 + i) * 4 + 2] = sysLast[i][2]; pal[(246 + i) * 4 + 3] = 0; } wdrvSetPalette(drv, 0, 256, pal); }