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VIDEO: Migrate SDL2 vid_draw to SDL_UpdateTexture for just the requested rectangle

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This commit is contained in:
Mark Pizzolato 2015-01-16 12:02:24 -08:00
parent b198e13c09
commit 136f5867b6
1 changed files with 3 additions and 6 deletions
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9
sim_video.c
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@ -918,14 +918,9 @@ vid_dst.y = y;
vid_dst.w = w;
vid_dst.h = h;
SDL_LockTexture(vid_texture, &vid_dst, (void *)&pixels, &pitch);
sim_debug (SIM_VID_DBG_VIDEO, vid_dev, "vid_draw(%d, %d, %d, %d)\n", x, y, w, h);
for (i = y; i < (y + h); i++, pixels = (uint32 *)(((uint8 *)pixels) + pitch), buf = (uint32 *)(((uint8 *)buf) + w))
memcpy (pixels, buf, (size_t)w*sizeof(*pixels));
SDL_UnlockTexture(vid_texture);
SDL_UpdateTexture(vid_texture, &vid_dst, buf, w*sizeof(*buf));
}
void vid_refresh (void)
@ -1411,6 +1406,7 @@ vid_dst.h = vid_height;
sim_debug (SIM_VID_DBG_VIDEO, vid_dev, "Video Update Event: \n");
if (sim_deb)
fflush (sim_deb);
SDL_RenderClear(vid_renderer);
SDL_RenderCopy(vid_renderer, vid_texture, NULL, NULL);
SDL_RenderPresent(vid_renderer);
}
@ -1524,6 +1520,7 @@ if ((vid_window == NULL) || (vid_renderer == NULL)) {
return 0;
}
SDL_SetWindowTitle (vid_window, sim_name);
SDL_SetRenderDrawColor (vid_renderer, 0, 0, 0, 255);
SDL_RenderClear (vid_renderer);
SDL_RenderPresent (vid_renderer);