test/testblitspeed.c
author Ryan C. Gordon <icculus@icculus.org>
Thu, 05 Jan 2006 16:37:46 +0000
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parent 1039 68f2b997758e
child 1658 e49147870aac
child 1895 c121d94672cb
permissions -rw-r--r--
testblitspeed.c improvements: cleaned up output, and allow user to set surface alpha attributes.
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/*
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 * Benchmarks surface-to-surface blits in various formats.
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 *
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 *  Written by Ryan C. Gordon.
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "SDL.h"
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static SDL_Surface *dest = NULL;
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static SDL_Surface *src = NULL;
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static int testSeconds = 10;
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static int percent(int val, int total)
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{
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    return((int) ((((float) val) / ((float) total)) * 100.0f));
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}
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static int randRange(int lo, int hi)
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{
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    return(lo + (int) (((double) hi)*rand()/(RAND_MAX+1.0)));
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}
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static void copy_trunc_str(char *str, size_t strsize, const char *flagstr)
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{
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    if ( (strlen(str) + strlen(flagstr)) >= (strsize - 1) )
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        strcpy(str + (strsize - 5), " ...");
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    else
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        strcat(str, flagstr);
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}
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static void __append_sdl_surface_flag(SDL_Surface *_surface, char *str,
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                                      size_t strsize, Uint32 flag,
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                                      const char *flagstr)
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{
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    if (_surface->flags & flag)
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        copy_trunc_str(str, strsize, flagstr);
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}
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#define append_sdl_surface_flag(a, b, c, fl) __append_sdl_surface_flag(a, b, c, fl, " " #fl)
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#define print_tf_state(str, val) printf("%s: {%s}\n", str, (val) ? "true" : "false" )
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static void output_videoinfo_details(void)
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{
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    const SDL_VideoInfo *info = SDL_GetVideoInfo();
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    printf("SDL_GetVideoInfo():\n");
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    if (info == NULL)
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        printf("  (null.)\n");
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    else
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    {
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        print_tf_state("  hardware surface available", info->hw_available);
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        print_tf_state("  window manager available", info->wm_available);
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        print_tf_state("  accelerated hardware->hardware blits", info->blit_hw);
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        print_tf_state("  accelerated hardware->hardware colorkey blits", info->blit_hw_CC);
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        print_tf_state("  accelerated hardware->hardware alpha blits", info->blit_hw_A);
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        print_tf_state("  accelerated software->hardware blits", info->blit_sw);
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        print_tf_state("  accelerated software->hardware colorkey blits", info->blit_sw_CC);
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        print_tf_state("  accelerated software->hardware alpha blits", info->blit_sw_A);
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        print_tf_state("  accelerated color fills", info->blit_fill);
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        printf("  video memory: (%d)\n", info->video_mem);
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    }
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    printf("\n");
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}
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static void output_surface_details(const char *name, SDL_Surface *surface)
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{
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    printf("Details for %s:\n", name);
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    if (surface == NULL)
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    {
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        printf("-WARNING- You've got a NULL surface!");
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    }
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    else
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    {
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        char f[256];
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        printf("  width      : %d\n", surface->w);
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        printf("  height     : %d\n", surface->h);
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        printf("  depth      : %d bits per pixel\n", surface->format->BitsPerPixel);
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        printf("  pitch      : %d\n", (int) surface->pitch);
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        printf("  alpha      : %d\n", (int) surface->format->alpha);
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        printf("  colorkey   : 0x%X\n", (unsigned int) surface->format->colorkey);
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        printf("  red bits   : 0x%08X mask, %d shift, %d loss\n",
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                    (int) surface->format->Rmask,
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                    (int) surface->format->Rshift,
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                    (int) surface->format->Rloss);
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        printf("  green bits : 0x%08X mask, %d shift, %d loss\n",
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                    (int) surface->format->Gmask,
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                    (int) surface->format->Gshift,
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                    (int) surface->format->Gloss);
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        printf("  blue bits  : 0x%08X mask, %d shift, %d loss\n",
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                    (int) surface->format->Bmask,
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                    (int) surface->format->Bshift,
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                    (int) surface->format->Bloss);
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        printf("  alpha bits : 0x%08X mask, %d shift, %d loss\n",
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                    (int) surface->format->Amask,
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                    (int) surface->format->Ashift,
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                    (int) surface->format->Aloss);
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        f[0] = '\0';
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        /*append_sdl_surface_flag(surface, f, sizeof (f), SDL_SWSURFACE);*/
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        if ((surface->flags & SDL_HWSURFACE) == 0)
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            copy_trunc_str(f, sizeof (f), " SDL_SWSURFACE");
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_HWSURFACE);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_ASYNCBLIT);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_ANYFORMAT);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_HWPALETTE);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_DOUBLEBUF);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_FULLSCREEN);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_OPENGL);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_OPENGLBLIT);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_RESIZABLE);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_NOFRAME);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_HWACCEL);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_SRCCOLORKEY);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_RLEACCELOK);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_RLEACCEL);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_SRCALPHA);
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        append_sdl_surface_flag(surface, f, sizeof (f), SDL_PREALLOC);
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   128
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        if (f[0] == '\0')
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            strcpy(f, " (none)");
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        printf("  flags      :%s\n", f);
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    }
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    printf("\n");
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}
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   137
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static void output_details(void)
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{
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    output_videoinfo_details();
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    output_surface_details("Source Surface", src);
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    output_surface_details("Destination Surface", dest);
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}
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   144
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static Uint32 blit(SDL_Surface *dst, SDL_Surface *src, int x, int y)
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{
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    Uint32 start = 0;
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    SDL_Rect srcRect;
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    SDL_Rect dstRect;
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    srcRect.x = 0;
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    srcRect.y = 0;
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    dstRect.x = x;
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    dstRect.y = y;
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    dstRect.w = srcRect.w = src->w;  /* SDL will clip as appropriate. */
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    dstRect.h = srcRect.h = src->h;
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    start = SDL_GetTicks();
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    SDL_BlitSurface(src, &srcRect, dst, &dstRect);
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    return(SDL_GetTicks() - start);
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}
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   162
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static void blitCentered(SDL_Surface *dst, SDL_Surface *src)
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{
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    int x = (dst->w - src->w) / 2;
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    int y = (dst->h - src->h) / 2;
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    blit(dst, src, x, y);
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}
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   169
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static int atoi_hex(const char *str)
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{
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    if (str == NULL)
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        return 0;
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    if (strlen(str) > 2)
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    {
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        int retval = 0;
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        if ((str[0] == '0') && (str[1] == 'x'))
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            sscanf(str + 2, "%X", &retval);
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        return(retval);
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    }
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    return(atoi(str));
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   184
}
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   185
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   186
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static int setup_test(int argc, char **argv)
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{
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    const char *dumpfile = NULL;
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    SDL_Surface *bmp = NULL;
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   191
    Uint32 dstbpp = 32;
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   192
    Uint32 dstrmask = 0x00FF0000;
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   193
    Uint32 dstgmask = 0x0000FF00;
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   194
    Uint32 dstbmask = 0x000000FF;
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   195
    Uint32 dstamask = 0x00000000;
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   196
    Uint32 dstflags = 0;
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   197
    int dstw = 640;
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   198
    int dsth = 480;
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   199
    Uint32 srcbpp = 32;
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   200
    Uint32 srcrmask = 0x00FF0000;
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   201
    Uint32 srcgmask = 0x0000FF00;
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   202
    Uint32 srcbmask = 0x000000FF;
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   203
    Uint32 srcamask = 0x00000000;
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   204
    Uint32 srcflags = 0;
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   205
    int srcw = 640;
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   206
    int srch = 480;
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   207
    Uint32 origsrcalphaflags = 0;
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   208
    Uint32 origdstalphaflags = 0;
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   209
    Uint32 srcalphaflags = 0;
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   210
    Uint32 dstalphaflags = 0;
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   211
    int srcalpha = 255;
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    int dstalpha = 255;
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   213
    int screenSurface = 0;
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    int i = 0;
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   215
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   216
    for (i = 1; i < argc; i++)
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   217
    {
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   218
        const char *arg = argv[i];
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   219
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   220
        if (strcmp(arg, "--dstbpp") == 0)
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   221
            dstbpp = atoi(argv[++i]);
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   222
        else if (strcmp(arg, "--dstrmask") == 0)
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   223
            dstrmask = atoi_hex(argv[++i]);
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   224
        else if (strcmp(arg, "--dstgmask") == 0)
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   225
            dstgmask = atoi_hex(argv[++i]);
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   226
        else if (strcmp(arg, "--dstbmask") == 0)
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   227
            dstbmask = atoi_hex(argv[++i]);
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   228
        else if (strcmp(arg, "--dstamask") == 0)
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   229
            dstamask = atoi_hex(argv[++i]);
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   230
        else if (strcmp(arg, "--dstwidth") == 0)
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   231
            dstw = atoi(argv[++i]);
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   232
        else if (strcmp(arg, "--dstheight") == 0)
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   233
            dsth = atoi(argv[++i]);
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   234
        else if (strcmp(arg, "--dsthwsurface") == 0)
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   235
            dstflags |= SDL_HWSURFACE;
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   236
        else if (strcmp(arg, "--srcbpp") == 0)
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   237
            srcbpp = atoi(argv[++i]);
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   238
        else if (strcmp(arg, "--srcrmask") == 0)
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   239
            srcrmask = atoi_hex(argv[++i]);
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        else if (strcmp(arg, "--srcgmask") == 0)
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            srcgmask = atoi_hex(argv[++i]);
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   242
        else if (strcmp(arg, "--srcbmask") == 0)
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            srcbmask = atoi_hex(argv[++i]);
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   244
        else if (strcmp(arg, "--srcamask") == 0)
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            srcamask = atoi_hex(argv[++i]);
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   246
        else if (strcmp(arg, "--srcwidth") == 0)
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            srcw = atoi(argv[++i]);
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   248
        else if (strcmp(arg, "--srcheight") == 0)
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            srch = atoi(argv[++i]);
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   250
        else if (strcmp(arg, "--srchwsurface") == 0)
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   251
            srcflags |= SDL_HWSURFACE;
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   252
        else if (strcmp(arg, "--seconds") == 0)
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   253
            testSeconds = atoi(argv[++i]);
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   254
        else if (strcmp(arg, "--screen") == 0)
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   255
            screenSurface = 1;
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   256
        else if (strcmp(arg, "--dumpfile") == 0)
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            dumpfile = argv[++i];
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        /* !!! FIXME: set colorkey. */
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   259
        else if (0)  /* !!! FIXME: we handle some commandlines elsewhere now */
1039
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        {
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   261
            fprintf(stderr, "Unknown commandline option: %s\n", arg);
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   262
            return(0);
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diff changeset
   263
        }
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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diff changeset
   264
    }
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   265
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   266
    if (SDL_Init(SDL_INIT_VIDEO) == -1)
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   267
    {
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   268
        fprintf(stderr, "SDL_Init failed: %s\n", SDL_GetError());
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   269
        return(0);
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   270
    }
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   271
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    bmp = SDL_LoadBMP("sample.bmp");
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   273
    if (bmp == NULL)
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   274
    {
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   275
        fprintf(stderr, "SDL_LoadBMP failed: %s\n", SDL_GetError());
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        SDL_Quit();
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   277
        return(0);
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   278
    }
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   279
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   280
    if ((dstflags & SDL_HWSURFACE) == 0) dstflags |= SDL_SWSURFACE;
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   281
    if ((srcflags & SDL_HWSURFACE) == 0) srcflags |= SDL_SWSURFACE;
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   282
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   283
    if (screenSurface)
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   284
        dest = SDL_SetVideoMode(dstw, dsth, dstbpp, dstflags);
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   285
    else
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   286
    {
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   287
        dest = SDL_CreateRGBSurface(dstflags, dstw, dsth, dstbpp,
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   288
                                    dstrmask, dstgmask, dstbmask, dstamask);
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diff changeset
   289
    }
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   290
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   291
    if (dest == NULL)
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   292
    {
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   293
        fprintf(stderr, "dest surface creation failed: %s\n", SDL_GetError());
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   294
        SDL_Quit();
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   295
        return(0);
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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diff changeset
   296
    }
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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diff changeset
   297
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   298
    src = SDL_CreateRGBSurface(srcflags, srcw, srch, srcbpp,
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   299
                               srcrmask, srcgmask, srcbmask, srcamask);
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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diff changeset
   300
    if (src == NULL)
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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diff changeset
   301
    {
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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diff changeset
   302
        fprintf(stderr, "src surface creation failed: %s\n", SDL_GetError());
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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diff changeset
   303
        SDL_Quit();
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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   304
        return(0);
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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diff changeset
   305
    }
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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diff changeset
   306
1231
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diff changeset
   307
    /* handle alpha settings... */
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diff changeset
   308
    srcalphaflags = (src->flags&SDL_SRCALPHA) | (src->flags&SDL_RLEACCEL);
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diff changeset
   309
    dstalphaflags = (dest->flags&SDL_SRCALPHA) | (dest->flags&SDL_RLEACCEL);
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   310
    origsrcalphaflags = srcalphaflags;
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
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diff changeset
   311
    origdstalphaflags = dstalphaflags;
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   312
    srcalpha = src->format->alpha;
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
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diff changeset
   313
    dstalpha = dest->format->alpha;
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
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diff changeset
   314
    for (i = 1; i < argc; i++)
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
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diff changeset
   315
    {
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
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diff changeset
   316
        const char *arg = argv[i];
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
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diff changeset
   317
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
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diff changeset
   318
        if (strcmp(arg, "--srcalpha") == 0)
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   319
            srcalpha = atoi(argv[++i]);
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
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diff changeset
   320
        else if (strcmp(arg, "--dstalpha") == 0)
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   321
            dstalpha = atoi(argv[++i]);
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   322
        else if (strcmp(arg, "--srcsrcalpha") == 0)
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   323
            srcalphaflags |= SDL_SRCALPHA;
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   324
        else if (strcmp(arg, "--srcnosrcalpha") == 0)
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   325
            srcalphaflags &= ~SDL_SRCALPHA;
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   326
        else if (strcmp(arg, "--srcrleaccel") == 0)
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   327
            srcalphaflags |= SDL_RLEACCEL;
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   328
        else if (strcmp(arg, "--srcnorleaccel") == 0)
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   329
            srcalphaflags &= ~SDL_RLEACCEL;
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   330
        else if (strcmp(arg, "--dstsrcalpha") == 0)
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   331
            dstalphaflags |= SDL_SRCALPHA;
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   332
        else if (strcmp(arg, "--dstnosrcalpha") == 0)
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   333
            dstalphaflags &= ~SDL_SRCALPHA;
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   334
        else if (strcmp(arg, "--dstrleaccel") == 0)
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   335
            dstalphaflags |= SDL_RLEACCEL;
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   336
        else if (strcmp(arg, "--dstnorleaccel") == 0)
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   337
            dstalphaflags &= ~SDL_RLEACCEL;
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   338
    }
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   339
    if ((dstalphaflags != origdstalphaflags) || (dstalpha != dest->format->alpha))
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   340
        SDL_SetAlpha(dest, dstalphaflags, (Uint8) dstalpha);
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   341
    if ((srcalphaflags != origsrcalphaflags) || (srcalpha != src->format->alpha))
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
parents: 1039
diff changeset
   342
        SDL_SetAlpha(src, srcalphaflags, (Uint8) srcalpha);
cf59e7b91ed4 testblitspeed.c improvements: cleaned up output, and allow user to set surface
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   343
1039
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   344
    /* set some sane defaults so we can see if the blit code is broken... */
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   345
    SDL_FillRect(dest, NULL, SDL_MapRGB(dest->format, 0, 0, 0));
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   346
    SDL_FillRect(src, NULL, SDL_MapRGB(src->format, 0, 0, 0));
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   347
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   348
    blitCentered(src, bmp);
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   349
    SDL_FreeSurface(bmp);
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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parents:
diff changeset
   350
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   351
    if (dumpfile)
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   352
        SDL_SaveBMP(src, dumpfile);  /* make sure initial convert is sane. */
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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parents:
diff changeset
   353
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   354
    output_details();
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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parents:
diff changeset
   355
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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diff changeset
   356
    return(1);
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
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parents:
diff changeset
   357
}
68f2b997758e Added testblitspeed to aid in profiling of SDL's blitters.
Ryan C. Gordon <icculus@icculus.org>
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   358
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   359
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   360
static void test_blit_speed(void)
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{
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   362
    Uint32 clearColor = SDL_MapRGB(dest->format, 0, 0, 0);
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   363
    Uint32 iterations = 0;
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   364
    Uint32 elasped = 0;
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   365
    Uint32 end = 0;
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   366
    Uint32 now = 0;
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   367
    Uint32 last = 0;
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   368
    int testms = testSeconds * 1000;
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   369
    int wmax = (dest->w - src->w);
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   370
    int hmax = (dest->h - src->h);
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   371
    int isScreen = (SDL_GetVideoSurface() == dest);
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   372
    SDL_Event event;
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   373
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   374
    printf("Testing blit speed for %d seconds...\n", testSeconds);
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   375
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   376
    now = SDL_GetTicks();
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   377
    end = now + testms;
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   378
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   379
    do
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   380
    {
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   381
        /* pump the event queue occasionally to keep OS happy... */
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   382
        if (now - last > 1000)
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   383
        {
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   384
            last = now;
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   385
            while (SDL_PollEvent(&event)) { /* no-op. */ }
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   386
        }
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   387
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   388
        iterations++;
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   389
        elasped += blit(dest, src, randRange(0, wmax), randRange(0, hmax));
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   390
        if (isScreen)
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   391
        {
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   392
            SDL_Flip(dest);  /* show it! */
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   393
            SDL_FillRect(dest, NULL, clearColor); /* blank it for next time! */
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   394
        }
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   395
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   396
        now = SDL_GetTicks();
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   397
    } while (now < end);
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   398
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   399
    printf("Non-blitting crap accounted for %d percent of this run.\n",
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   400
            percent(testms - elasped, testms));
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   401
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   402
    printf("%d blits took %d ms (%d fps).\n",
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   403
            (int) iterations,
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   404
            (int) elasped,
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   405
            (int) (((float)iterations) / (((float)elasped) / 1000.0f)));
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   406
}
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   407
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   408
int main(int argc, char **argv)
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   409
{
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   410
    int initialized = setup_test(argc, argv);
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   411
    if (initialized)
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   412
    {
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   413
        test_blit_speed();
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   414
        SDL_Quit();
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   415
    }
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   416
    return(!initialized);
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   417
}
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   418
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   419
/* end of testblitspeed.c ... */
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   420