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test-case set opaque

main_bug_3827_set_alpha_to_opaque.c (text/x-csrc), 5.57 KB, created by Sylvain on 2020-02-23 22:00:20 UTC

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Description:

Filename:

MIME Type:

Creator: Sylvain

Created: 2020-02-23 22:00:20 UTC

Size: 5.57 KB

patch

obsolete

>#include "SDL.h"
>
>static SDL_Surface* create_surf(void)
>{
>    SDL_Surface *textbuf;
>    int i;
>    int width = 256;
>    int height = 256;
>
>    textbuf = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, 8, 0, 0, 0, 0);
>    if (textbuf == NULL) {
>        return NULL;
>    }
>
>    SDL_SetSurfaceBlendMode(textbuf, SDL_BLENDMODE_BLEND);
>
>    SDL_Palette *palette = textbuf->format->palette;
>
>    for (i = 0; i < 256; ++i) {
>        palette->colors[i].r = 50 + i/2;
>        palette->colors[i].g = 50 + i/2;
>        palette->colors[i].b = 50 + i/2;
>        palette->colors[i].a = 0;
>    }
>
>    SDL_memset(textbuf->pixels, 0, textbuf->h * textbuf->pitch);
>
>    SDL_memset(textbuf->pixels, 200, textbuf->h * textbuf->pitch / 2);
>    SDL_memset(textbuf->pixels, 100, textbuf->h * textbuf->pitch / 4);
>    SDL_memset(textbuf->pixels, 50, textbuf->h * textbuf->pitch / 8);
>
>    return textbuf;
>}
>
>
>   int
>main(int argc, char **argv)
>{
>    SDL_version   compiled;
>    SDL_version   linked;
>    SDL_Window   *window   = NULL;
>    SDL_Renderer *renderer = 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"); // opaque
>    // SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengl");
>    // SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengl"); // transparent
>    // SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengles"); 
>
>    SDL_SetHint(SDL_HINT_RENDER_BATCHING, "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 = create_surf();
>
>    //    surf = SDL_ConvertSurface(surf, SDL_AllocFormat(SDL_PIXELFORMAT_ARGB8888), 0);
>    //    surf = SDL_ConvertSurface(surf, SDL_AllocFormat(SDL_PIXELFORMAT_ABGR8888), 0);
>
>
>    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);
>
>
>    int nb_render = 0;
>create_renderer:
>    renderer = SDL_CreateRenderer(window, nb_render, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
>    if (renderer == NULL) {
>        SDL_Log("can't create Renderer %s nb=%d/%d", SDL_GetError(), nb_render, SDL_GetNumRenderDrivers());
>        return 1;
>    }
>
>#if 0
>    for (int i = 0; i < SDL_GetNumRenderDrivers(); i++) {
>        SDL_RendererInfo info;
>        SDL_GetRenderDriverInfo(i, &info);
>        SDL_Log("renderer[%d] = %s", i, info.name);
>        for (unsigned int j = 0; j < info.num_texture_formats; j++) {
>            SDL_Log(" %s", SDL_GetPixelFormatName(info.texture_formats[j]));
>        }
>    }
>#endif
>
>#if 1
>    SDL_RendererInfo info;
>    SDL_GetRendererInfo(renderer, &info);
>    SDL_Log("Current renderer: %s", info.name);
>#endif
>
>    /* create texture */
>    if (surf) {
>        tex = SDL_CreateTextureFromSurface(renderer, surf);
>#if 0
>        SDL_SetTextureBlendMode(tex, SDL_BLENDMODE_NONE);
>        SDL_SetTextureBlendMode(tex, SDL_BLENDMODE_BLEND);
>#endif
>    }
>
>    {
>        SDL_BlendMode b = 0;
>        int ret  = SDL_GetTextureBlendMode(tex, &b);
>        SDL_Log("blendmode=%d retval=%d", b, ret);
>    }
>    {
>        Uint8 a = 0;
>        int ret =  SDL_GetTextureAlphaMod(tex, &a);
>        SDL_Log("alphamod=%d retval=%d", a, ret);
>    }
>    {
>        Uint8 r=0, g=0, b=0;
>        int ret = SDL_GetTextureColorMod(tex, &r, &g, &b);
>        SDL_Log("r=%d g=%d b=%d retval=%d", r, g, b, ret);
>    }
>
>
>    /* 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) {
>
>                            if (tex)        SDL_DestroyTexture(tex);
>                            SDL_DestroyRenderer(renderer);
>
>                            tex = NULL;
>                            renderer = NULL;
>                            nb_render++;
>                            if (nb_render == SDL_GetNumRenderDrivers()) nb_render = 0;
>                            SDL_Log("Key : Space! ==================== Create new renderer");
>                            goto create_renderer;
>                        }
>                        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_SetRenderDrawColor(renderer, 0xff, 0, 0, 255); /* Red background */
>        SDL_RenderClear(renderer);
>
>
>        SDL_Rect srcrect = { 0, 0, surf->w, surf->h };
>        SDL_Rect dstrect = { 10, 10, surf->w, surf->h };
>
>        SDL_RenderCopy(renderer, tex, &srcrect, &dstrect);
>
>        SDL_RenderPresent(renderer);
>    }
>
>    /* end */
>    if (surf)       SDL_FreeSurface(surf);
>    if (tex)        SDL_DestroyTexture(tex);
>    SDL_DestroyRenderer(renderer);
>    SDL_DestroyWindow(window);
>    SDL_Quit();
>
>    return EXIT_SUCCESS;
>}
>

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Attachments on bug 3827: 2937 | 2938 | 3580 | 3581 | 3582 | 4226 | 4267

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.