在土壤中的多线程支持opengl [英] multi-threading support in soil for opengl

问题描述

我的问题是，是否是SOIL（简单opengl图像库）线程兼容？

因为当我运行下面的代码：

  Texture = SOIL_load_OGL_texture（
 loc.c_str（），
 SOIL_LOAD_AUTO，
 SOIL_CREATE_NEW_ID，
 SOIL_FLAG_POWER_OF_TWO 
 | SOIL_FLAG_MIPMAPS 
 | SOIL_FLAG_MULTIPLY_ALPHA 
 | SOIL_FLAG_COMPRESS_TO_DXT 
 | SOIL_FLAG_DDS_LOAD_DIRECT 
 | SOIL_FLAG_INVERT_Y 
）; 
  

（以加载纹理）

外面的线程它工作正常，但是当运行在std ::线程内时，它给我的错误

未处理的异常0x592527FF （msvcr110d.dll）in Project2.exe：
0xC0000005：访问冲突读取位置0x00000000。

线程化它以便它可以在菜单屏幕期间加载，或者启动屏幕或某种类型的东西。所以我的问题是如果SOIL不是线程安全的，那么一个体面的解决方案是运行一个线程来运行菜单/初始屏幕/任何为了允许纹理加载在主线程？

< （感谢datenwolf进行纠正）如果上面提到的方法是一个简单的方法，你可以使用一个单独的线程来调用GL上下文，使用GL方法，我假设它，然后它不会工作，除非你在单独的GL上下文中。如果你想要多线程的方式，你可以创建共享上下文 - 每个在单独的线程。然后你渲染主线程加载纹理在另一个。我不知道它是多少是性能聪明，但你可以尝试无论如何。

My question is, is SOIL (simple opengl image library) thread compatible?

Because when I run the following code:

Texture = SOIL_load_OGL_texture (
                 loc.c_str(),
                 SOIL_LOAD_AUTO,
                 SOIL_CREATE_NEW_ID,
                 SOIL_FLAG_POWER_OF_TWO
                 | SOIL_FLAG_MIPMAPS
                 | SOIL_FLAG_MULTIPLY_ALPHA
                 | SOIL_FLAG_COMPRESS_TO_DXT
                 | SOIL_FLAG_DDS_LOAD_DIRECT
                 | SOIL_FLAG_INVERT_Y
             );

(in order to load a texture)

outside of a thread it works fine, however when run inside an std::thread it gives me the error

Unhandled exception at 0x592527FF (msvcr110d.dll) in Project2.exe: 0xC0000005: Access violation reading location 0x00000000.

I want to be able to thread it so that it can load during a menu screen, or a splash screen or something of the sort. So my question is if SOIL is not thread safe then would a decent solution be to run a thread to run the menu/ splash screen/ whatever in order to allow textures to load in the main thread?

解决方案

OpenGL isTHREAD BOUND!Which means you can make calls on your GL context from a single thread at a time.(Thanks to datenwolf for correction)If the above mentioned method uses GL methods ,which I suppose it does, then it won't work unless you do it in separate GL context.If you want to go multi -threaded way,you can create shared context - each in separate thread.Then you render in the main thread while loading the textures in another one.I am not sure how much it is performance wise,but you can give it a try anyway.

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