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.

patch

main_bug_update_streaming_texture.c (text/x-csrc), 4.34 KB, created by Sylvain on 2017-11-10 20:07:34 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Sylvain

Created: 2017-11-10 20:07:34 UTC

Size: 4.34 KB

patch

obsolete

>#include "SDL.h"
>#include "SDL_image.h"
>
>   int
>main(int argc, char **argv)
>{
>    SDL_version   compiled;
>    SDL_version   linked;
>    SDL_Window   *window   = NULL;
>    SDL_Renderer *renderer = NULL;
>    const char   *img      = NULL;
>    SDL_Surface  *surf_img = NULL;
>    SDL_Surface  *surf     = NULL;
>    int           quit     = 1;
>    int           window_w = 800;
>    int           window_h = 640;
>    SDL_Event     evt      = {};
>    SDL_Texture  *tex      = NULL;
>
>    // SDL_SetHint(SDL_HINT_RENDER_DRIVER, "software");
>    // SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengl");
>    // SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengles2");
>    // SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengles");
>
>    if (argc != 2) {
>        SDL_Log("syntax:  %s <img_file>", argv[0]);
>        exit(1);
>    }
>
>    img = argv[1];
>
>    if ((SDL_Init(SDL_INIT_VIDEO) != 0)) {
>        SDL_Log("can't initialize SDL %s", SDL_GetError());
>        exit(-1);
>    }
>
>    SDL_VERSION(&compiled);
>    SDL_GetVersion(&linked);
>    SDL_Log("We compiled against SDL version %d.%d.%d ...\n", compiled.major, compiled.minor, compiled.patch);
>    SDL_Log("But we are linking against SDL version %d.%d.%d.\n", linked.major, linked.minor, linked.patch);
>
>    surf_img = IMG_Load(img);
>    if (!surf_img) {
>        SDL_Log("fail to load image '%s'", img);
>        exit(1);
>    }
>    
>    surf = SDL_ConvertSurfaceFormat(surf_img, SDL_PIXELFORMAT_RGB888, 0);
>    SDL_Log("input surface %s", SDL_GetPixelFormatName(surf->format->format));
>
>    if (!(window = SDL_CreateWindow("Local Video", 0, 0, window_w, window_h, SDL_WINDOW_SHOWN | SDL_WINDOW_BORDERLESS))) {
>        SDL_Log("can't create Window %s", SDL_GetError());
>        exit(-1);
>    }
>
>    SDL_LogSetAllPriority(SDL_LOG_PRIORITY_VERBOSE);
>
>    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
>    if (renderer == NULL) {
>        SDL_Log("can't create Renderer %s", SDL_GetError());
>        return 1;
>    }
>
>    SDL_RendererInfo info;
>    SDL_GetRendererInfo(renderer, &info);
>    SDL_Log("Current renderer: %s", info.name);
>
>
>    /* create texture */
>    if (surf) {
>        tex = SDL_CreateTexture(renderer, surf->format->format, SDL_TEXTUREACCESS_STREAMING, surf->w, surf->h);
>        if (tex == NULL) {
>            return -1;
>        }
>            
>        int must_lock = SDL_MUSTLOCK(surf);
>        if (must_lock) {
>            SDL_LockSurface(surf);
>        }
>
>#if 0
>        SDL_Rect r = { 10, 20, 100, 200 };
>        SDL_UpdateTexture(tex, &r, surf->pixels, surf->pitch);
>#else
>        SDL_UpdateTexture(tex, NULL, surf->pixels, surf->pitch);
>#endif
>        if (must_lock) {
>            SDL_UnlockSurface(surf);
>        }
>
>    }
>
>    
>    // Lock/Unlock access
>    int pitch; 
>    int *pix = NULL;
>    SDL_LockTexture(tex, NULL, &pix, &pitch);
>    int x,y;
>
>    for (y = 0; y < 30; y++) {
>        for (x = 0; x < 100; x++) {
>            pix[x] = 0xff00;
>        }
>
>        pix = (Uint8*)pix + pitch;
>    }
>    SDL_UnlockTexture(tex);
>
>
>    /* loop */
>    while (quit) {
>        while (SDL_PollEvent(&evt) == 1) {
>            switch (evt.type)
>            {
>                case SDL_KEYDOWN:
>                    {
>                        const int sym = evt.key.keysym.sym;
>                        if (sym == SDLK_SPACE) {
>                            SDL_Log("Key : Space!");
>                        }
>                        if (sym == SDLK_ESCAPE || sym == SDLK_AC_BACK) {
>                            quit = 0;
>                            SDL_Log("Key : Escape!");
>                        }
>                    }
>                    break;
>                case SDL_QUIT:
>                    {
>                        quit = 0;
>                        SDL_Log("Ctlr+C : Quit!");
>                    }
>                    break;
>
>            }
>        }
>
>
>        SDL_RenderClear(renderer);
>
>        SDL_SetRenderDrawColor(renderer, 0xff, 0, 0, 255); /* Red background */
>
>        SDL_Rect srcrect = { 0, 0, surf->w, surf->h };
>        SDL_Rect dstrect = { 10, 10, window_w - 20, window_h - 20 };
>
>        SDL_RenderCopy(renderer, tex, &srcrect, &dstrect);
>
>        SDL_RenderPresent(renderer);
>    }
>
>    /* end */
>    if (surf_img)   SDL_FreeSurface(surf_img);
>    if (surf)       SDL_FreeSurface(surf);
>    if (tex)        SDL_DestroyTexture(tex);
>    SDL_DestroyRenderer(renderer);
>    SDL_DestroyWindow(window);
>    SDL_Quit();
>
>    return EXIT_SUCCESS;
>}
>

Actions: View

Attachments on bug 3954: 3080 | 3081 | 3082 | 3837

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.