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SDL help?

4 posts in this topic

I'm making a menu using SDL and i'm having a weird issue, i have 2 textures on screen. Ive got a background on my mainWindow and i have a texture for a button. When i try to make a new texture it wont render. If i make 2 textures one will render. Is this a memory problem? why is it doing this?

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I am not sure what you are doing as without code I can not tell much, but here is a little SDL2 program I made in a few minutes. It opens a window and renders 3 images to it. The first is the background, the second a button, and the third another image.


That is what it should look like when you run it. Here is the code: http://pastebin.com/qh2Pi5T6

Edit: Unless by texture you mean on GPU.

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Works perfect! ok so I'm sure i was displaying them wrong, I'm still new at this.

i was using


Button::Button(const char* path, SDL_Renderer* windowRend, int xPos, int yPos, int width, int height)
  btnImageSurface = SDL_LoadBMP(path);
  btnTexture = SDL_CreateTextureFromSurface(windowRend, btnImageSurface);
  btn_Rect.x = xPos;
  btn_Rect.y = yPos;
  btn_Rect.w = width;
  btn_Rect.h = height;
  SDL_RenderCopy(windowRend, btnTexture, NULL, &btn_Rect);

I was working on this project a while ago, I got tired of learning Cpp making basic CLI stuff so I started SDL2. The Tutorial I was using is still over my head... it took me 20 mins before i found out GCC can compile more than one .cpp file at once. 

This is definitely a jump from c# and Visual Studio

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If you want to render with the GPU, then you need to use SDL_Texture instead of SDL_Surface, SDL_Texture is loaded into your video card's VRAM instead of RAM.

I have compiled this code with visual studio 2015 community edition: http://pastebin.com/A8Dc46Sr

edit: SDL will use OpenGL or DirectX internally to do this, or some other method in the future such as Vulkan.

Seirex likes this

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