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A simple C program that shows the problem when run on an XP machine

updatetexture.c (text/x-csrc), 1.66 KB, created by Gabriele Greco on 2015-09-28 14:43:44 UTC

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Description:

Filename:

MIME Type:

Creator: Gabriele Greco

Created: 2015-09-28 14:43:44 UTC

Size: 1.66 KB

patch

obsolete

>#include "SDL.h"
>#include "debugapi.h"
>
>int SW=352, SH=288;
>
>int main(int argc, char *argv[])
>{
>    OutputDebugString("Start!");
>    if (SDL_Init(SDL_INIT_VIDEO)) { OutputDebugString(SDL_GetError()); return 0; }
>    SDL_Window *w = SDL_CreateWindow("Test", 100, 100, SW, SH, SDL_WINDOW_RESIZABLE);
>    if (!w) { OutputDebugString(SDL_GetError()); return 0;  }
>    SDL_Renderer *r = SDL_CreateRenderer(w, -1,  SDL_RENDERER_ACCELERATED|SDL_RENDERER_PRESENTVSYNC /* WORKS replacing the previous flags with SDL_RENDERER_SOFTWARE */);
>    if (!r) { OutputDebugString(SDL_GetError()); return 0; }
>
>    SDL_RendererInfo info;
>    SDL_GetRendererInfo(r, &info);
>    OutputDebugString(info.name);
>    SDL_Texture *t = SDL_CreateTexture(r, SDL_PIXELFORMAT_YV12, SDL_TEXTUREACCESS_STATIC,  SW, SH);
>    if (!t) { OutputDebugString(SDL_GetError()); return 0; }
>    Uint8 *v = (Uint8*)SDL_malloc(SW * SH * 3 / 2);
>    memset(v, 0, SW * SH * 3 / 2);  memset(v + SW * SH, 127, SW * SH / 2);
>    Uint8 *y = v;
>    OutputDebugString("Starting loop!");
>
>    while(1) {
>        SDL_Event e;
>        while (SDL_PollEvent(&e)) {
>            if ( (e.type == SDL_KEYUP && e.key.keysym.sym == SDLK_ESCAPE) ||
>                 (e.type == SDL_WINDOWEVENT && e.window.event == SDL_WINDOWEVENT_CLOSE))   {
>                OutputDebugString("Quit!");
>                SDL_Quit();
>                return 0;
>            }
>        }
>
>        y += SW;
>        memset(v, 0, SW * SH); memset(y, 255, SW * 50);
>
>        if ((y + 50 * SW) >= (v + SW * SH)) y = v;
>
>        SDL_UpdateYUVTexture(t, NULL, v, SW, v + (SW*SH), SW/2, v + (SW*SH*5/4), SW/2);
>        SDL_RenderCopy(r, t, NULL, NULL);
>        SDL_RenderPresent(r);
>    }
>}

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Attachments on bug 3133: 2278

We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.