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Add run-time context creation API selection

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Fixes #145.
This commit is contained in:
Camilla Berglund
2016-03-28 13:19:31 +02:00
parent 9d50a346f0
commit ef80beab81
32 changed files with 806 additions and 804 deletions
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src/win32_window.c
+49 -52
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@@ -940,55 +940,58 @@ int _glfwPlatformCreateWindow(_GLFWwindow* window,
if (!createWindow(window, wndconfig))
return GLFW_FALSE;
if (ctxconfig->api != GLFW_NO_API)
if (ctxconfig->client != GLFW_NO_API)
{
#if defined(_GLFW_WGL)
if (!_glfwCreateContextWGL(window, ctxconfig, fbconfig))
return GLFW_FALSE;
status = _glfwAnalyzeContextWGL(window, ctxconfig, fbconfig);
if (status == _GLFW_RECREATION_IMPOSSIBLE)
return GLFW_FALSE;
if (status == _GLFW_RECREATION_REQUIRED)
if (ctxconfig->source == GLFW_NATIVE_CONTEXT_API)
{
// Some window hints require us to re-create the context using WGL
// extensions retrieved through the current context, as we cannot
// check for WGL extensions or retrieve WGL entry points before we
// have a current context (actually until we have implicitly loaded
// the vendor ICD)
// Yes, this is strange, and yes, this is the proper way on WGL
// As Windows only allows you to set the pixel format once for
// a window, we need to destroy the current window and create a new
// one to be able to use the new pixel format
// Technically, it may be possible to keep the old window around if
// we're just creating an OpenGL 3.0+ context with the same pixel
// format, but it's not worth the added code complexity
// First we clear the current context (the one we just created)
// This is usually done by glfwDestroyWindow, but as we're not doing
// full GLFW window destruction, it's duplicated here
_glfwPlatformMakeContextCurrent(NULL);
// Next destroy the Win32 window and WGL context (without resetting
// or destroying the GLFW window object)
_glfwDestroyContextWGL(window);
destroyWindow(window);
// ...and then create them again, this time with better APIs
if (!createWindow(window, wndconfig))
return GLFW_FALSE;
if (!_glfwCreateContextWGL(window, ctxconfig, fbconfig))
return GLFW_FALSE;
status = _glfwAnalyzeContextWGL(window, ctxconfig, fbconfig);
if (status == _GLFW_RECREATION_IMPOSSIBLE)
return GLFW_FALSE;
if (status == _GLFW_RECREATION_REQUIRED)
{
// Some window hints require us to re-create the context using WGL
// extensions retrieved through the current context, as we cannot
// check for WGL extensions or retrieve WGL entry points before we
// have a current context (actually until we have implicitly loaded
// the vendor ICD)
// Yes, this is strange, and yes, this is the proper way on WGL
// As Windows only allows you to set the pixel format once for
// a window, we need to destroy the current window and create a new
// one to be able to use the new pixel format
// Technically, it may be possible to keep the old window around if
// we're just creating an OpenGL 3.0+ context with the same pixel
// format, but it's not worth the added code complexity
// First we clear the current context (the one we just created)
// This is usually done by glfwDestroyWindow, but as we're not doing
// full GLFW window destruction, it's duplicated here
window->context.makeContextCurrent(NULL);
// Next destroy the Win32 window and WGL context (without resetting
// or destroying the GLFW window object)
window->context.destroyContext(window);
destroyWindow(window);
// ...and then create them again, this time with better APIs
if (!createWindow(window, wndconfig))
return GLFW_FALSE;
if (!_glfwCreateContextWGL(window, ctxconfig, fbconfig))
return GLFW_FALSE;
}
}
else
{
if (!_glfwCreateContextEGL(window, ctxconfig, fbconfig))
return GLFW_FALSE;
}
#elif defined(_GLFW_EGL)
if (!_glfwCreateContextEGL(window, ctxconfig, fbconfig))
return GLFW_FALSE;
#endif
}
if (window->monitor)
@@ -1007,14 +1010,8 @@ void _glfwPlatformDestroyWindow(_GLFWwindow* window)
if (window->monitor)
releaseMonitor(window);
if (window->context.api != GLFW_NO_API)
{
#if defined(_GLFW_WGL)
_glfwDestroyContextWGL(window);
#elif defined(_GLFW_EGL)
_glfwDestroyContextEGL(window);
#endif
}
if (window->context.client != GLFW_NO_API)
window->context.destroyContext(window);
destroyWindow(window);