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.

Bug 3616

Summary: SDL_GL_CreateContext fails with SDL_GL_CONTEXT_DEBUG_FLAG and ANGLE/GLES 2.0
Product: SDL Reporter: Colin Barrett <barrettcolin+libsdl>
Component: videoAssignee: Sam Lantinga <slouken>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2 Keywords: target-2.0.6
Version: 2.0.5   
Hardware: x86   
OS: Windows 10   

Description Colin Barrett 2017-03-26 15:27:46 UTC 
Using the pre-built x86 devel libs from here:

https://www.libsdl.org/release/SDL2-devel-2.0.5-VC.zip

If I have:

SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_DEBUG_FLAG);

and I'm using ANGLE/(a GL driver that doesn't provide an ES2 context) such that SDL_EGL_CreateContext is called by SDL_GL_CreateContext, I get the error "Could not create EGL context (context attributes are not supported)" and no context is created.

Looking at the code in SDL_EGL_CreateContext - if gl_config.flags is non-zero, it looks like the code in the section guarded with "#ifdef EGL_KHR_create_context" should be executed - but it apparently isn't. 

Is it possible this section hasn't been compiled into the pre-built libraries? If I build SDL2.dll myself using the Visual C++ solution (VS2015 Community Update 3) then the call succeeds as I expect
Comment 1 Sam Lantinga 2017-08-30 05:06:20 UTC 
Yup, I build the release libraries with mingw-w64, and it doesn't include the EGL headers by default, so that code wasn't compiled in.

I've included the Khronos headers so EGL support is always available:
https://hg.libsdl.org/SDL/rev/243b1a53ad89

Thanks!