kc3-lang/SDL/src/video/khronos/GLES2/gl2platform.h

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• Hash : 92bf6085
  Author :
  Date : 2017-08-29T22:04:43
  

  Fixed bug 3616 - SDL_GL_CreateContext fails with SDL_GL_CONTEXT_DEBUG_FLAG and ANGLE/GLES 2.0
  
  Colin Barrett
  
  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
  

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• src/video/khronos/GLES2/gl2platform.h

• #ifndef __gl2platform_h_
  #define __gl2platform_h_
  
  /*
  ** Copyright (c) 2017 The Khronos Group Inc.
  **
  ** Licensed under the Apache License, Version 2.0 (the "License");
  ** you may not use this file except in compliance with the License.
  ** You may obtain a copy of the License at
  **
  **     http://www.apache.org/licenses/LICENSE-2.0
  **
  ** Unless required by applicable law or agreed to in writing, software
  ** distributed under the License is distributed on an "AS IS" BASIS,
  ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ** See the License for the specific language governing permissions and
  ** limitations under the License.
  */
  
  /* Platform-specific types and definitions for OpenGL ES 2.X  gl2.h
   *
   * Adopters may modify khrplatform.h and this file to suit their platform.
   * Please contribute modifications back to Khronos as pull requests on the
   * public github repository:
   *      https://github.com/KhronosGroup/OpenGL-Registry
   */
  
  #include <KHR/khrplatform.h>
  
  #ifndef GL_APICALL
  #define GL_APICALL  KHRONOS_APICALL
  #endif
  
  #ifndef GL_APIENTRY
  #define GL_APIENTRY KHRONOS_APIENTRY
  #endif
  
  #endif /* __gl2platform_h_ */
  

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