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SDL2 2D 纹理分配/池化

[英]SDL2 2D texture allocation/pooling

原文 2020-01-24 20:00:49 9 1 c++/ c/ sdl

I have two questions regarding SDL2's hardware-accelerated texture rendering:我有两个关于 SDL2 的硬件加速纹理渲染的问题：

When using SDL_Createtexture(...) , are textures automatically pooled/transferred between system RAM and VRAM when VRAM is at a premium?使用SDL_Createtexture(...) ，当 VRAM 非常SDL_Createtexture(...) ，纹理是否会在系统 RAM 和 VRAM 之间自动池化/传输？ In order to ensure I don't inundate VRAM, I was considering loading textures into surfaces and converting them to textures as and when required (it's unlikely that all textures will fit into VRAM at once).为了确保我不会淹没 VRAM，我正在考虑将纹理加载到表面并在需要时将它们转换为纹理（不太可能所有纹理一次都适合 VRAM）。
When minimizing a fullscreen application and/or changing screen resolutions, will SDL_Texture instances need to be recreated?在最小化全屏应用程序和/或更改屏幕分辨率时，是否需要重新创建SDL_Texture实例？

1 个解决方案

No, you don't need to recreate your SDL_Texture instances after minimize a window or change its resolutions.不，您不需要在最小化窗口或更改其分辨率后重新创建SDL_Texture实例。 Maybe you only need to redraw things in the screen after change its resolutions, but not after minimize it.也许您只需要在更改分辨率后重新绘制屏幕中的内容，而不是在最小化它之后。

Also, I recommend you to look at these SDL2 tutorials: https://lazyfoo.net/tutorials/SDL/index.php另外，我建议您查看这些 SDL2 教程： https ://lazyfoo.net/tutorials/SDL/index.php