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test-case to dump value

main_bug_4901_logical_and_target.c (text/x-csrc), 3.00 KB, created by Sylvain on 2019-12-19 10:49:27 UTC

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Description:

Filename:

MIME Type:

Creator: Sylvain

Created: 2019-12-19 10:49:27 UTC

Size: 3.00 KB

patch

obsolete

>#include <SDL.h>
>#include <SDL_image.h>
>
>
>static
>void dump(SDL_Renderer *renderer, const char *str) 
>{
>    float scaleX = -1.0f;
>    float scaleY = -1.0f;
>    int w = -1;
>    int h = -1;
>    SDL_Rect r = {};
>    SDL_RenderGetScale(renderer, &scaleX, &scaleY);
>    SDL_RenderGetLogicalSize(renderer, &w, &h);
>    SDL_RenderGetViewport(renderer, &r);
>    SDL_Log("%s: scaleX/Y=(%f, %f) logical_w/h=(%d, %d) viewport at (%d, %d) size= %d x %d", str, scaleX, scaleY, w, h, r.x, r.y, r.w, r.h);
>}
>
>
>
>
>
>int main(int argc, char* argv[]) 
>{
>    SDL_Init(SDL_INIT_VIDEO);
>    SDL_Window *window = SDL_CreateWindow("test", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 800, 600, SDL_WINDOW_SHOWN); 
>
>
>
>//    SDL_SetHint(SDL_HINT_RENDER_LOGICAL_SIZE_MODE, "overscan");
>
>    SDL_Renderer *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;
>    }
>
>
>    dump(renderer, "after init");
>
>    if (0) {
>        SDL_RenderSetScale(renderer, 2.0, 1.0);
>        dump(renderer, "after setting scale = (2, 1)");
>    }
>
>    if (0) {
>        SDL_RenderSetLogicalSize(renderer, 100, 100);
>        dump(renderer, "after setting logical size (100, 100)");
>    }
>
>
>
>
>
>
>
>    SDL_Texture* texture = SDL_CreateTexture( renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_TARGET, 256, 128 );
>
>
>    if (texture == NULL) {
>        SDL_Log("no target texture");
>    }
>
>    SDL_SetRenderTarget( renderer, texture );
>
>    dump(renderer, "with target texture");
>
>
>
>    if (0) {
>        SDL_RenderSetScale(renderer, 2.0, 1.0);
>        dump(renderer, "after setting scale = (2, 1)");
>    }
>
>    if (1) {
>        SDL_RenderSetLogicalSize(renderer, 100, 100);
>        dump(renderer, "after setting logical size (100, 100)");
>    }
>
>    if (1) {
>        SDL_RenderSetLogicalSize(renderer, 256, 128);
>        dump(renderer, "after re-setting logical size of target texture (256, 128)");
>    }
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>    SDL_SetRenderDrawColor( renderer, 0xFF, 0x0, 0, 0xFF );
>    SDL_RenderClear( renderer );
>    SDL_RenderPresent( renderer );
>
>    SDL_SetRenderTarget( renderer, NULL );
>
>
>    dump(renderer, "without target texture");
>
>
>
>    SDL_Event event = {};
>    int running = 1;
>    while(running) {
>        while(SDL_PollEvent(&event)) {
>            switch (event.type) {
>                case SDL_KEYDOWN:
>                    if(event.key.keysym.sym == SDLK_ESCAPE) running = 0;
>                    break;
>                case SDL_QUIT:
>                    running = 0;
>            }
>        }
>
>        if (1) {
>            int return_value = SDL_RenderCopy( renderer, texture, NULL, NULL );
>
>            if( return_value != 0 ) {
>                printf( "The texture could not be rendered! SDL_Error: %s\n", SDL_GetError() );
>            }
>        }
>
>
>
>
>        SDL_RenderPresent(renderer);
>
>        SDL_Delay(1);
>    }
>
>    SDL_DestroyTexture(texture);
>    SDL_DestroyRenderer(renderer);
>    SDL_DestroyWindow(window);
>    SDL_Quit();
>    return 0;
>}

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Attachments on bug 4901: 4118

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.