Function SDL_RenderCopyF

deps/SDL2/src/render/SDL_render.c:2944–3001

}

int
SDL_RenderCopyF(SDL_Renderer * renderer, SDL_Texture * texture,
                const SDL_Rect * srcrect, const SDL_FRect * dstrect)
{
    SDL_Rect real_srcrect;
    SDL_FRect real_dstrect;
    SDL_Rect r;
    int retval;

    CHECK_RENDERER_MAGIC(renderer, -1);
    CHECK_TEXTURE_MAGIC(texture, -1);

    if (renderer != texture->renderer) {
        return SDL_SetError("Texture was not created with this renderer");
    }

    /* Don't draw while we're hidden */
    if (renderer->hidden) {
        return 0;
    }

    real_srcrect.x = 0;
    real_srcrect.y = 0;
    real_srcrect.w = texture->w;
    real_srcrect.h = texture->h;
    if (srcrect) {
        if (!SDL_IntersectRect(srcrect, &real_srcrect, &real_srcrect)) {
            return 0;
        }
    }

    SDL_zero(r);
    SDL_RenderGetViewport(renderer, &r);
    real_dstrect.x = 0.0f;
    real_dstrect.y = 0.0f;
    real_dstrect.w = (float) r.w;
    real_dstrect.h = (float) r.h;
    if (dstrect) {
        if (!SDL_HasIntersectionF(dstrect, &real_dstrect)) {
            return 0;
        }
        real_dstrect = *dstrect;
    }

    if (texture->native) {
        texture = texture->native;
    }

    real_dstrect.x *= renderer->scale.x;
    real_dstrect.y *= renderer->scale.y;
    real_dstrect.w *= renderer->scale.x;
    real_dstrect.h *= renderer->scale.y;

    texture->last_command_generation = renderer->render_command_generation;

    retval = QueueCmdCopy(renderer, texture, &real_srcrect, &real_dstrect);
    return retval < 0 ? retval : FlushRenderCommandsIfNotBatching(renderer);
}