Mercurial > repos > blastem
diff render_sdl.c @ 426:add9e2f5c0e3
Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering
author | Mike Pavone <pavone@retrodev.com> |
---|---|
date | Sun, 30 Jun 2013 11:45:58 -0700 |
parents | d0cacb4ade0b |
children | 18cde14e8c10 7696d824489d |
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--- a/render_sdl.c Sat Jun 29 17:21:19 2013 -0700 +++ b/render_sdl.c Sun Jun 30 11:45:58 2013 -0700 @@ -10,9 +10,6 @@ uint32_t last_frame = 0; -int32_t color_map[1 << 12]; -uint8_t levels[] = {0, 27, 49, 71, 87, 103, 119, 130, 146, 157, 174, 190, 206, 228, 255}; - uint32_t min_delay; uint32_t frame_delay = 1000/60; @@ -76,6 +73,16 @@ SDL_Joystick * joysticks[MAX_JOYSTICKS]; int num_joysticks; +uint32_t render_map_color(uint8_t r, uint8_t g, uint8_t b) +{ + return SDL_MapRGB(screen->format, r, g, b); +} + +uint8_t render_depth() +{ + return screen->format->BytesPerPixel * 8; +} + void render_init(int width, int height, char * title, uint32_t fps) { if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_JOYSTICK) < 0) { @@ -90,28 +97,11 @@ fprintf(stderr, "Unable to get SDL surface: %s\n", SDL_GetError()); exit(1); } - if (screen->format->BytesPerPixel < 2) { - fprintf(stderr, "BlastEm requires at least a 16-bit surface, SDL returned a %d-bit surface\n", screen->format->BytesPerPixel * 8); + if (screen->format->BytesPerPixel != 2 && screen->format->BytesPerPixel != 4) { + fprintf(stderr, "BlastEm requires a 16-bit or 32-bit surface, SDL returned a %d-bit surface\n", screen->format->BytesPerPixel * 8); exit(1); } SDL_WM_SetCaption(title, title); - uint8_t b,g,r; - for (uint16_t color = 0; color < (1 << 12); color++) { - if (color & FBUF_SHADOW) { - b = levels[(color >> 9) & 0x7]; - g = levels[(color >> 5) & 0x7]; - r = levels[(color >> 1) & 0x7]; - } else if(color & FBUF_HILIGHT) { - b = levels[((color >> 9) & 0x7) + 7]; - g = levels[((color >> 5) & 0x7) + 7]; - r = levels[((color >> 1) & 0x7) + 7]; - } else { - b = levels[(color >> 8) & 0xE]; - g = levels[(color >> 4) & 0xE]; - r = levels[color & 0xE]; - } - color_map[color] = SDL_MapRGB(screen->format, r, g, b); - } min_delay = 0; for (int i = 0; i < 100; i++) { uint32_t start = SDL_GetTicks(); @@ -163,11 +153,10 @@ SDL_JoystickEventState(SDL_ENABLE); } -uint16_t blankbuf[320*240]; +uint32_t blankbuf[320*240]; void render_context(vdp_context * context) { - uint8_t *buf_8; uint16_t *buf_16; uint32_t *buf_32; uint8_t b,g,r; @@ -185,108 +174,40 @@ repeat_y = repeat_x; } int othermask = repeat_y >> 1; - uint16_t *otherbuf = (context->regs[REG_MODE_4] & BIT_INTERLACE) ? context->evenbuf : blankbuf; - switch (screen->format->BytesPerPixel) { - case 2: - buf_16 = (uint16_t *)screen->pixels; - for (int y = 0; y < 240; y++) { - for (int i = 0; i < repeat_y; i++,buf_16 += screen->pitch/2) { + + if (screen->format->BytesPerPixel == 2) { + uint16_t *otherbuf = (context->regs[REG_MODE_4] & BIT_INTERLACE) ? context->evenbuf : (uint16_t *)blankbuf; + uint16_t * oddbuf = context->oddbuf; + buf_16 = (uint16_t *)screen->pixels; + for (int y = 0; y < 240; y++) { + for (int i = 0; i < repeat_y; i++,buf_16 += screen->pitch/2) { uint16_t *line = buf_16; - uint16_t *src_line = (i & othermask ? otherbuf : context->oddbuf) + y * 320; + uint16_t *src_line = (i & othermask ? otherbuf : oddbuf) + y * 320; for (int x = 0; x < 320; x++) { - uint16_t color = color_map[*(src_line++) & 0xFFF]; + uint16_t color = *(src_line++); for (int j = 0; j < repeat_x; j++) { *(line++) = color; } } } - } - break; - case 3: - buf_8 = (uint8_t *)screen->pixels; - for (int y = 0; y < 240; y++) { - for (int i = 0; i < repeat_y; i++,buf_8 += screen->pitch) { - uint8_t *line = buf_8; + } + } else { + uint32_t *otherbuf = (context->regs[REG_MODE_4] & BIT_INTERLACE) ? context->evenbuf : (uint32_t *)blankbuf; + uint32_t * oddbuf = context->oddbuf; + buf_32 = (uint32_t *)screen->pixels; + for (int y = 0; y < 240; y++) { + for (int i = 0; i < repeat_y; i++,buf_32 += screen->pitch/4) { + uint32_t *line = buf_32; + uint32_t *src_line = (i & othermask ? otherbuf : oddbuf) + y * 320; for (int x = 0; x < 320; x++) { - uint16_t gen_color = context->oddbuf[y * 320 + x]; - b = ((gen_color >> 8) & 0xE) * 18; - g = ((gen_color >> 4) & 0xE) * 18; - r = (gen_color& 0xE) * 18; + uint32_t color = *(src_line++); for (int j = 0; j < repeat_x; j++) { - *(buf_8+screen->format->Rshift/8) = r; - *(buf_8+screen->format->Gshift/8) = g; - *(buf_8+screen->format->Bshift/8) = b; - buf_8 += 3; - } + *(line++) = color; + } } } - } - break; - case 4: - buf_32 = (uint32_t *)screen->pixels; - - for (int y = 0; y < 240; y++) { - for (int i = 0; i < repeat_y; i++,buf_32 += screen->pitch/4) { - uint32_t *line = buf_32; - uint16_t *src_line = (i & othermask ? otherbuf : context->oddbuf) + y * 320; - for (int x = 0; x < 320; x++) { - uint32_t color; - if (!render_dbg) { - color = color_map[*(src_line++) & 0xFFF]; - } else if(render_dbg == 2) { - color = color_map[context->cram[(y/30)*8 + x/40]]; - } else if(render_dbg == 3) { - if (x & 1) { - color = color_map[context->cram[ (debug_pal << 4) | (context->vdpmem[(x/8)*32 + (y/8)*32*40 + (x%8)/2 + (y%8)*4] & 0xF) ]]; - } else { - color = color_map[context->cram[ (debug_pal << 4) | (context->vdpmem[(x/8)*32 + (y/8)*32*40 + (x%8)/2 + (y%8)*4] >> 4) ]]; - } - }else { - uint16_t gen_color = context->oddbuf[y * 320 + x]; - r = g = b = 0; - switch(gen_color & FBUF_SRC_MASK) - { - case FBUF_SRC_A: - g = 127;//plane a = green - break; - case FBUF_SRC_W: - g = 127;//window = cyan - b = 127; - break; - case FBUF_SRC_B: - b = 127;//plane b = blue - break; - case FBUF_SRC_S: - r = 127;//sprite = red - break; - case FBUF_SRC_BG: - r = 127;//BG = purple - b = 127; - } - if (gen_color & FBUF_BIT_PRIORITY) { - b *= 2; - g *= 2; - r *= 2; - } - if (gen_color & FBUF_SHADOW) { - b /= 2; - g /= 2; - r /= 2; - } else if(gen_color & FBUF_HILIGHT) { - b = b ? b : 64; - g = g ? g : 64; - r = r ? r : 64; - } - color = SDL_MapRGB(screen->format, r, g, b); - } - for (int j = 0; j < repeat_x; j++) { - *(line++) = color; - } - } - } - } - break; - } + } + } if ( SDL_MUSTLOCK(screen) ) { SDL_UnlockSurface(screen); }