Remove unused 16bpp code
This commit is contained in:
Alexander Batalov
parent
0474199b5c
commit
42f01c8d45
291
src/svga.cc
291
src/svga.cc
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@ -26,59 +26,18 @@ namespace fallout {
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static bool createRenderer(int width, int height);
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static void destroyRenderer();
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// NOTE: This value is never set, so it's impossible to understand it's
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// meaning.
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//
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// 0x51E2C4
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void (*_update_palette_func)() = NULL;
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// 0x51E2C8
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bool gMmxEnabled = true;
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// 0x51E2CC
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bool gMmxProbed = false;
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// 0x6AC7F0
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unsigned short gSixteenBppPalette[256];
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// screen rect
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Rect _scr_size;
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// 0x6ACA00
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int gGreenMask;
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// 0x6ACA04
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int gRedMask;
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// 0x6ACA08
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int gBlueMask;
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// 0x6ACA0C
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int gBlueShift;
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// 0x6ACA10
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int gRedShift;
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// 0x6ACA14
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int gGreenShift;
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// 0x6ACA18
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void (*_scr_blit)(unsigned char* src, int src_pitch, int a3, int src_x, int src_y, int src_width, int src_height, int dest_x, int dest_y) = _GNW95_ShowRect;
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// 0x6ACA1C
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void (*_zero_mem)() = NULL;
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// 0x6ACA20
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bool gMmxSupported;
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// FIXME: This buffer was supposed to be used as temporary place to store
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// current palette while switching video modes (changing resolution). However
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// the original game does not have UI to change video mode. Even if it did this
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// buffer it too small to hold the entire palette, which require 256 * 3 bytes.
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//
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// 0x6ACA24
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unsigned char gLastVideoModePalette[268];
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SDL_Window* gSdlWindow = NULL;
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SDL_Surface* gSdlSurface = NULL;
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SDL_Renderer* gSdlRenderer = NULL;
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@ -91,12 +50,18 @@ FpsLimiter sharedFpsLimiter;
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// 0x4CACD0
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void mmxSetEnabled(bool a1)
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{
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if (!gMmxProbed) {
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gMmxSupported = mmxIsSupported();
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gMmxProbed = true;
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// 0x51E2CC
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static bool probed = false;
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// 0x6ACA20
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static bool supported;
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if (!probed) {
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supported = mmxIsSupported();
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probed = true;
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}
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if (gMmxSupported) {
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if (supported) {
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gMmxEnabled = a1;
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}
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}
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@ -208,17 +173,10 @@ int _GNW95_init_mode_ex(int width, int height, int bpp)
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mmxSetEnabled(true);
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if (bpp == 8) {
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_mouse_blit_trans = NULL;
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_scr_blit = _GNW95_ShowRect;
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_zero_mem = _GNW95_zero_vid_mem;
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_mouse_blit = _GNW95_ShowRect;
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} else {
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_zero_mem = NULL;
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_mouse_blit = _GNW95_MouseShowRect16;
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_mouse_blit_trans = _GNW95_MouseShowTransRect16;
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_scr_blit = _GNW95_ShowRect16;
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}
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_mouse_blit_trans = NULL;
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_scr_blit = _GNW95_ShowRect;
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_zero_mem = _GNW95_zero_vid_mem;
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_mouse_blit = _GNW95_ShowRect;
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return 0;
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}
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@ -263,39 +221,6 @@ int _GNW95_init_window(int width, int height, bool fullscreen)
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return 0;
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}
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// calculate shift for mask
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// 0x4CAF50
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int getShiftForBitMask(int mask)
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{
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int shift = 0;
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if ((mask & 0xFFFF0000) != 0) {
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shift |= 16;
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mask &= 0xFFFF0000;
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}
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if ((mask & 0xFF00FF00) != 0) {
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shift |= 8;
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mask &= 0xFF00FF00;
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}
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if ((mask & 0xF0F0F0F0) != 0) {
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shift |= 4;
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mask &= 0xF0F0F0F0;
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}
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if ((mask & 0xCCCCCCCC) != 0) {
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shift |= 2;
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mask &= 0xCCCCCCCC;
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}
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if ((mask & 0xAAAAAAAA) != 0) {
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shift |= 1;
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}
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return shift;
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}
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// 0x4CAF9C
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int directDrawInit(int width, int height, int bpp)
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{
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@ -314,26 +239,16 @@ int directDrawInit(int width, int height, int bpp)
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gSdlSurface = SDL_CreateRGBSurface(0, width, height, bpp, 0, 0, 0, 0);
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if (bpp == 8) {
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SDL_Color colors[256];
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for (int index = 0; index < 256; index++) {
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colors[index].r = index;
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colors[index].g = index;
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colors[index].b = index;
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colors[index].a = 255;
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}
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SDL_SetPaletteColors(gSdlSurface->format->palette, colors, 0, 256);
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} else {
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gRedMask = gSdlSurface->format->Rmask;
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gGreenMask = gSdlSurface->format->Gmask;
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gBlueMask = gSdlSurface->format->Bmask;
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gRedShift = gSdlSurface->format->Rshift;
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gGreenShift = gSdlSurface->format->Gshift;
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gBlueShift = gSdlSurface->format->Bshift;
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SDL_Color colors[256];
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for (int index = 0; index < 256; index++) {
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colors[index].r = index;
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colors[index].g = index;
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colors[index].b = index;
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colors[index].a = 255;
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}
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SDL_SetPaletteColors(gSdlSurface->format->palette, colors, 0, 256);
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return 0;
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}
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@ -363,31 +278,6 @@ void directDrawSetPaletteInRange(unsigned char* palette, int start, int count)
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SDL_SetPaletteColors(gSdlSurface->format->palette, colors, start, count);
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SDL_BlitSurface(gSdlSurface, NULL, gSdlTextureSurface, NULL);
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} else {
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for (int index = start; index < start + count; index++) {
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unsigned short r = palette[0] << 2;
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unsigned short g = palette[1] << 2;
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unsigned short b = palette[2] << 2;
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palette += 3;
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r = gRedShift > 0 ? (r << gRedShift) : (r >> -gRedShift);
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r &= gRedMask;
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g = gGreenShift > 0 ? (g << gGreenShift) : (g >> -gGreenShift);
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g &= gGreenMask;
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b = gBlueShift > 0 ? (b << gBlueShift) : (b >> -gBlueShift);
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b &= gBlueMask;
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unsigned short rgb = r | g | b;
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gSixteenBppPalette[index] = rgb;
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}
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windowRefreshAll(&_scr_size);
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}
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if (_update_palette_func != NULL) {
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_update_palette_func();
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}
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}
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@ -406,66 +296,27 @@ void directDrawSetPalette(unsigned char* palette)
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SDL_SetPaletteColors(gSdlSurface->format->palette, colors, 0, 256);
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SDL_BlitSurface(gSdlSurface, NULL, gSdlTextureSurface, NULL);
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} else {
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for (int index = 0; index < 256; index++) {
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unsigned short r = palette[index * 3] << 2;
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unsigned short g = palette[index * 3 + 1] << 2;
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unsigned short b = palette[index * 3 + 2] << 2;
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r = gRedShift > 0 ? (r << gRedShift) : (r >> -gRedShift);
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r &= gRedMask;
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g = gGreenShift > 0 ? (g << gGreenShift) : (g >> -gGreenShift);
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g &= gGreenMask;
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b = gBlueShift > 0 ? (b << gBlueShift) : (b >> -gBlueShift);
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b &= gBlueMask;
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unsigned short rgb = r | g | b;
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gSixteenBppPalette[index] = rgb;
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}
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windowRefreshAll(&_scr_size);
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}
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if (_update_palette_func != NULL) {
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_update_palette_func();
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}
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}
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// 0x4CB68C
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unsigned char* directDrawGetPalette()
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{
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// 0x6ACA24
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static unsigned char palette[768];
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if (gSdlSurface != NULL && gSdlSurface->format->palette != NULL) {
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SDL_Color* colors = gSdlSurface->format->palette->colors;
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for (int index = 0; index < 256; index++) {
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SDL_Color* color = &(colors[index]);
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gLastVideoModePalette[index * 3] = color->r >> 2;
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gLastVideoModePalette[index * 3 + 1] = color->g >> 2;
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gLastVideoModePalette[index * 3 + 2] = color->b >> 2;
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palette[index * 3] = color->r >> 2;
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palette[index * 3 + 1] = color->g >> 2;
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palette[index * 3 + 2] = color->b >> 2;
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}
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return gLastVideoModePalette;
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}
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int redShift = gRedShift + 2;
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int greenShift = gGreenShift + 2;
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int blueShift = gBlueShift + 2;
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for (int index = 0; index < 256; index++) {
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unsigned short rgb = gSixteenBppPalette[index];
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unsigned short r = redShift > 0 ? ((rgb & gRedMask) >> redShift) : ((rgb & gRedMask) << -redShift);
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unsigned short g = greenShift > 0 ? ((rgb & gGreenMask) >> greenShift) : ((rgb & gGreenMask) << -greenShift);
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unsigned short b = blueShift > 0 ? ((rgb & gBlueMask) >> blueShift) : ((rgb & gBlueMask) << -blueShift);
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gLastVideoModePalette[index * 3] = (r >> 2) & 0xFF;
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gLastVideoModePalette[index * 3 + 1] = (g >> 2) & 0xFF;
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gLastVideoModePalette[index * 3 + 2] = (b >> 2) & 0xFF;
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}
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return gLastVideoModePalette;
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return palette;
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}
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// 0x4CB850
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@ -485,86 +336,6 @@ void _GNW95_ShowRect(unsigned char* src, int srcPitch, int a3, int srcX, int src
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SDL_BlitSurface(gSdlSurface, &srcRect, gSdlTextureSurface, &destRect);
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}
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// 0x4CB93C
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void _GNW95_MouseShowRect16(unsigned char* src, int srcPitch, int a3, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY)
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{
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if (!gProgramIsActive) {
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return;
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}
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unsigned char* dest = (unsigned char*)gSdlSurface->pixels + gSdlSurface->pitch * destY + 2 * destX;
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src += srcPitch * srcY + srcX;
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for (int y = 0; y < srcHeight; y++) {
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unsigned short* destPtr = (unsigned short*)dest;
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unsigned char* srcPtr = src;
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for (int x = 0; x < srcWidth; x++) {
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*destPtr = gSixteenBppPalette[*srcPtr];
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destPtr++;
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srcPtr++;
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}
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dest += gSdlSurface->pitch;
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src += srcPitch;
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}
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SDL_Rect srcRect;
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srcRect.x = destX;
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srcRect.y = destY;
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srcRect.w = srcWidth;
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srcRect.h = srcHeight;
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SDL_Rect destRect;
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destRect.x = destX;
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destRect.y = destY;
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SDL_BlitSurface(gSdlSurface, &srcRect, gSdlTextureSurface, &destRect);
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}
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// 0x4CBA44
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void _GNW95_ShowRect16(unsigned char* src, int srcPitch, int a3, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY)
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{
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_GNW95_MouseShowRect16(src, srcPitch, a3, srcX, srcY, srcWidth, srcHeight, destX, destY);
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}
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// 0x4CBAB0
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void _GNW95_MouseShowTransRect16(unsigned char* src, int srcPitch, int a3, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, unsigned char keyColor)
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{
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if (!gProgramIsActive) {
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return;
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}
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unsigned char* dest = (unsigned char*)gSdlSurface->pixels + gSdlSurface->pitch * destY + 2 * destX;
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src += srcPitch * srcY + srcX;
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for (int y = 0; y < srcHeight; y++) {
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unsigned short* destPtr = (unsigned short*)dest;
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unsigned char* srcPtr = src;
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for (int x = 0; x < srcWidth; x++) {
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if (*srcPtr != keyColor) {
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*destPtr = gSixteenBppPalette[*srcPtr];
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}
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destPtr++;
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srcPtr++;
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}
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dest += gSdlSurface->pitch;
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src += srcPitch;
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}
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SDL_Rect srcRect;
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srcRect.x = destX;
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srcRect.y = destY;
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srcRect.w = srcWidth;
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srcRect.h = srcHeight;
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SDL_Rect destRect;
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destRect.x = destX;
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destRect.y = destY;
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SDL_BlitSurface(gSdlSurface, &srcRect, gSdlTextureSurface, &destRect);
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}
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// Clears drawing surface.
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//
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// 0x4CBBC8
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@ -574,16 +345,12 @@ void _GNW95_zero_vid_mem()
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return;
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}
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SDL_LockSurface(gSdlSurface);
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unsigned char* surface = (unsigned char*)gSdlSurface->pixels;
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for (int y = 0; y < gSdlSurface->h; y++) {
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memset(surface, 0, gSdlSurface->w);
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surface += gSdlSurface->pitch;
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}
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SDL_UnlockSurface(gSdlSurface);
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SDL_BlitSurface(gSdlSurface, NULL, gSdlTextureSurface, NULL);
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}
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15
src/svga.h
15
src/svga.h
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@ -10,22 +10,11 @@
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namespace fallout {
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extern void (*_update_palette_func)();
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extern bool gMmxEnabled;
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extern bool gMmxProbed;
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extern unsigned short gSixteenBppPalette[256];
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extern Rect _scr_size;
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extern int gRedMask;
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extern int gGreenMask;
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extern int gBlueMask;
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extern int gBlueShift;
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extern int gRedShift;
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extern int gGreenShift;
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extern void (*_scr_blit)(unsigned char* src, int src_pitch, int a3, int src_x, int src_y, int src_width, int src_height, int dest_x, int dest_y);
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extern void (*_zero_mem)();
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extern bool gMmxSupported;
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extern unsigned char gLastVideoModePalette[268];
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extern SDL_Window* gSdlWindow;
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extern SDL_Surface* gSdlSurface;
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@ -48,16 +37,12 @@ void _zero_vid_mem();
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int _GNW95_init_mode_ex(int width, int height, int bpp);
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int _init_vesa_mode(int width, int height);
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int _GNW95_init_window(int width, int height, bool fullscreen);
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int getShiftForBitMask(int mask);
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int directDrawInit(int width, int height, int bpp);
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void directDrawFree();
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void directDrawSetPaletteInRange(unsigned char* a1, int a2, int a3);
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void directDrawSetPalette(unsigned char* palette);
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unsigned char* directDrawGetPalette();
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void _GNW95_ShowRect(unsigned char* src, int src_pitch, int a3, int src_x, int src_y, int src_width, int src_height, int dest_x, int dest_y);
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void _GNW95_MouseShowRect16(unsigned char* src, int srcPitch, int a3, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY);
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void _GNW95_ShowRect16(unsigned char* src, int srcPitch, int a3, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY);
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void _GNW95_MouseShowTransRect16(unsigned char* src, int srcPitch, int a3, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, unsigned char keyColor);
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void _GNW95_zero_vid_mem();
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int screenGetWidth();
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