kc3-lang/SDL/src/video/cocoa/SDL_cocoaopengles.m

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• Hash : cb361896
  Author :
  Date : 2020-12-09T07:16:22
  

  Fixed bug 5235 - All internal sources should include SDL_assert.h Ryan C. Gordon We should really stick this in SDL_internal.h or something so it's always available.

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• src/video/cocoa/SDL_cocoaopengles.m

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:
  
    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.
  */
  #include "../../SDL_internal.h"
  
  #if SDL_VIDEO_DRIVER_COCOA && SDL_VIDEO_OPENGL_EGL
  
  #include "SDL_cocoavideo.h"
  #include "SDL_cocoaopengles.h"
  #include "SDL_cocoaopengl.h"
  
  /* EGL implementation of SDL OpenGL support */
  
  int
  Cocoa_GLES_LoadLibrary(_THIS, const char *path) {
  
      /* If the profile requested is not GL ES, switch over to WIN_GL functions  */
      if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) {
  #if SDL_VIDEO_OPENGL_CGL
          Cocoa_GLES_UnloadLibrary(_this);
          _this->GL_LoadLibrary = Cocoa_GL_LoadLibrary;
          _this->GL_GetProcAddress = Cocoa_GL_GetProcAddress;
          _this->GL_UnloadLibrary = Cocoa_GL_UnloadLibrary;
          _this->GL_CreateContext = Cocoa_GL_CreateContext;
          _this->GL_MakeCurrent = Cocoa_GL_MakeCurrent;
          _this->GL_SetSwapInterval = Cocoa_GL_SetSwapInterval;
          _this->GL_GetSwapInterval = Cocoa_GL_GetSwapInterval;
          _this->GL_SwapWindow = Cocoa_GL_SwapWindow;
          _this->GL_DeleteContext = Cocoa_GL_DeleteContext;
          return Cocoa_GL_LoadLibrary(_this, path);
  #else
          return SDL_SetError("SDL not configured with OpenGL/CGL support");
  #endif
      }
      
      if (_this->egl_data == NULL) {
          return SDL_EGL_LoadLibrary(_this, NULL, EGL_DEFAULT_DISPLAY, 0);
      }
  
      return 0;
  }
  
  SDL_GLContext
  Cocoa_GLES_CreateContext(_THIS, SDL_Window * window)
  {
      SDL_GLContext context;
      SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
  
  #if SDL_VIDEO_OPENGL_CGL
      if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) {
          /* Switch to CGL based functions */
          Cocoa_GLES_UnloadLibrary(_this);
          _this->GL_LoadLibrary = Cocoa_GL_LoadLibrary;
          _this->GL_GetProcAddress = Cocoa_GL_GetProcAddress;
          _this->GL_UnloadLibrary = Cocoa_GL_UnloadLibrary;
          _this->GL_CreateContext = Cocoa_GL_CreateContext;
          _this->GL_MakeCurrent = Cocoa_GL_MakeCurrent;
          _this->GL_SetSwapInterval = Cocoa_GL_SetSwapInterval;
          _this->GL_GetSwapInterval = Cocoa_GL_GetSwapInterval;
          _this->GL_SwapWindow = Cocoa_GL_SwapWindow;
          _this->GL_DeleteContext = Cocoa_GL_DeleteContext;
  
          if (Cocoa_GL_LoadLibrary(_this, NULL) != 0) {
              return NULL;
          }
  
          return Cocoa_GL_CreateContext(_this, window);
      }
  #endif
  
      context = SDL_EGL_CreateContext(_this, data->egl_surface);
      return context;
  }
  
  void
  Cocoa_GLES_DeleteContext(_THIS, SDL_GLContext context)
  {
      SDL_EGL_DeleteContext(_this, context);
      Cocoa_GLES_UnloadLibrary(_this);
  }
  
  SDL_EGL_SwapWindow_impl(Cocoa)
  SDL_EGL_MakeCurrent_impl(Cocoa)
  
  int
  Cocoa_GLES_SetupWindow(_THIS, SDL_Window * window)
  {
      /* The current context is lost in here; save it and reset it. */
      SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata;
      SDL_Window *current_win = SDL_GL_GetCurrentWindow();
      SDL_GLContext current_ctx = SDL_GL_GetCurrentContext();
  
  
      if (_this->egl_data == NULL) {
          SDL_assert(!_this->gl_config.driver_loaded);
          if (SDL_EGL_LoadLibrary(_this, NULL, EGL_DEFAULT_DISPLAY, 0) < 0) {
              SDL_EGL_UnloadLibrary(_this);
              return -1;
          }
          _this->gl_config.driver_loaded = 1;
      }
    
      /* Create the GLES window surface */
      NSView* v = windowdata->nswindow.contentView;
      windowdata->egl_surface = SDL_EGL_CreateSurface(_this, (NativeWindowType)[v layer]);
  
      if (windowdata->egl_surface == EGL_NO_SURFACE) {
          return SDL_SetError("Could not create GLES window surface");
      }
  
      return Cocoa_GLES_MakeCurrent(_this, current_win, current_ctx);
  }
  
  #endif /* SDL_VIDEO_DRIVER_COCOA && SDL_VIDEO_OPENGL_EGL */
  
  /* vi: set ts=4 sw=4 expandtab: */
  

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