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WGL context option cleanup.

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This commit is contained in:
Camilla Berglund
2012-12-13 22:43:23 +01:00
parent cf38b34f45
commit bd31ea0a69
4 changed files with 152 additions and 121 deletions
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src/wgl_context.c
+124 -71
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@@ -329,12 +329,16 @@ static _GLFWfbconfig* getFBConfigs(_GLFWwindow* window, unsigned int* found)
// Creates an OpenGL context on the specified device context
//========================================================================
#define setWGLattrib(attribName, attribValue) \
attribs[index++] = attribName; \
attribs[index++] = attribValue;
static GLboolean createContext(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
int pixelFormat)
{
int attribs[40];
PIXELFORMATDESCRIPTOR pfd;
int i = 0, attribs[40];
HGLRC share = NULL;
if (wndconfig->share)
@@ -356,94 +360,56 @@ static GLboolean createContext(_GLFWwindow* window,
if (window->WGL.ARB_create_context)
{
// Use the newer wglCreateContextAttribsARB creation method
int index = 0, mask = 0, flags = 0, strategy = 0;
if (wndconfig->glMajor != 1 || wndconfig->glMinor != 0)
if (wndconfig->clientAPI == GLFW_OPENGL_API)
{
// Request an explicitly versioned context
attribs[i++] = WGL_CONTEXT_MAJOR_VERSION_ARB;
attribs[i++] = wndconfig->glMajor;
attribs[i++] = WGL_CONTEXT_MINOR_VERSION_ARB;
attribs[i++] = wndconfig->glMinor;
}
if (wndconfig->clientAPI == GLFW_OPENGL_ES_API)
{
if (!window->WGL.ARB_create_context_profile ||
!window->WGL.EXT_create_context_es2_profile)
{
_glfwSetError(GLFW_VERSION_UNAVAILABLE,
"Win32/WGL: OpenGL ES 2.x requested but "
"WGL_EXT_create_context_es2_profile is unavailable");
return GL_FALSE;
}
attribs[i++] = WGL_CONTEXT_PROFILE_MASK_ARB;
attribs[i++] = WGL_CONTEXT_ES2_PROFILE_BIT_EXT;
}
if (wndconfig->glForward || wndconfig->glDebug || wndconfig->glRobustness)
{
int flags = 0;
if (wndconfig->glForward)
flags |= WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
if (wndconfig->glDebug)
flags |= WGL_CONTEXT_DEBUG_BIT_ARB;
if (wndconfig->glRobustness)
flags |= WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB;
attribs[i++] = WGL_CONTEXT_FLAGS_ARB;
attribs[i++] = flags;
}
if (wndconfig->glProfile)
{
int flags = 0;
if (!window->WGL.ARB_create_context_profile)
if (wndconfig->glProfile)
{
_glfwSetError(GLFW_VERSION_UNAVAILABLE,
"WGL: OpenGL profile requested but "
"WGL_ARB_create_context_profile is unavailable");
return GL_FALSE;
if (wndconfig->glProfile == GLFW_OPENGL_CORE_PROFILE)
mask |= WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
else if (wndconfig->glProfile == GLFW_OPENGL_COMPAT_PROFILE)
mask |= WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
}
if (wndconfig->glProfile == GLFW_OPENGL_CORE_PROFILE)
flags = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
else if (wndconfig->glProfile == GLFW_OPENGL_COMPAT_PROFILE)
flags = WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
attribs[i++] = WGL_CONTEXT_PROFILE_MASK_ARB;
attribs[i++] = flags;
}
else
mask |= WGL_CONTEXT_ES2_PROFILE_BIT_EXT;
if (wndconfig->glRobustness)
{
int strategy = 0;
if (!window->WGL.ARB_create_context_robustness)
if (window->WGL.ARB_create_context_robustness)
{
_glfwSetError(GLFW_VERSION_UNAVAILABLE,
"WGL: An OpenGL robustness strategy was "
"requested but WGL_ARB_create_context_robustness "
"is unavailable");
return GL_FALSE;
if (wndconfig->glRobustness == GLFW_NO_RESET_NOTIFICATION)
strategy = WGL_NO_RESET_NOTIFICATION_ARB;
else if (wndconfig->glRobustness == GLFW_LOSE_CONTEXT_ON_RESET)
strategy = WGL_LOSE_CONTEXT_ON_RESET_ARB;
flags |= WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB;
}
if (wndconfig->glRobustness == GLFW_NO_RESET_NOTIFICATION)
strategy = WGL_NO_RESET_NOTIFICATION_ARB;
else if (wndconfig->glRobustness == GLFW_LOSE_CONTEXT_ON_RESET)
strategy = WGL_LOSE_CONTEXT_ON_RESET_ARB;
attribs[i++] = WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB;
attribs[i++] = strategy;
}
attribs[i++] = 0;
if (wndconfig->glMajor != 1 || wndconfig->glMinor != 0)
{
setWGLattrib(WGL_CONTEXT_MAJOR_VERSION_ARB, wndconfig->glMajor);
setWGLattrib(WGL_CONTEXT_MINOR_VERSION_ARB, wndconfig->glMinor);
}
if (flags)
setWGLattrib(WGL_CONTEXT_FLAGS_ARB, flags);
if (mask)
setWGLattrib(WGL_CONTEXT_PROFILE_MASK_ARB, mask);
if (strategy)
setWGLattrib(WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB, strategy);
setWGLattrib(0, 0);
window->WGL.context = window->WGL.CreateContextAttribsARB(window->WGL.DC,
share,
@@ -483,6 +449,8 @@ static GLboolean createContext(_GLFWwindow* window,
return GL_TRUE;
}
#undef setWGLattrib
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
@@ -554,6 +522,91 @@ void _glfwDestroyContext(_GLFWwindow* window)
}
//========================================================================
// Analyzes the specified context for possible recreation
//========================================================================
int _glfwAnalyzeContext(const _GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWfbconfig* fbconfig)
{
GLboolean required = GL_FALSE;
if (wndconfig->clientAPI == GLFW_OPENGL_API)
{
if (wndconfig->glForward)
{
if (!window->WGL.ARB_create_context)
{
_glfwSetError(GLFW_VERSION_UNAVAILABLE,
"WGL: A forward compatible OpenGL context "
"requested but WGL_ARB_create_context is "
"unavailable");
return _GLFW_RECREATION_IMPOSSIBLE;
}
required = GL_TRUE;
}
if (wndconfig->glProfile)
{
if (!window->WGL.ARB_create_context_profile)
{
_glfwSetError(GLFW_VERSION_UNAVAILABLE,
"WGL: OpenGL profile requested but "
"WGL_ARB_create_context_profile is unavailable");
return _GLFW_RECREATION_IMPOSSIBLE;
}
required = GL_TRUE;
}
}
else
{
if (!window->WGL.ARB_create_context ||
!window->WGL.ARB_create_context_profile ||
!window->WGL.EXT_create_context_es2_profile)
{
_glfwSetError(GLFW_VERSION_UNAVAILABLE,
"WGL: OpenGL ES requested but "
"WGL_ARB_create_context_es2_profile is unavailable");
return _GLFW_RECREATION_IMPOSSIBLE;
}
required = GL_TRUE;
}
if (wndconfig->glMajor != 1 || wndconfig->glMinor != 0)
{
if (window->WGL.ARB_create_context)
required = GL_TRUE;
}
if (wndconfig->glDebug)
{
if (window->WGL.ARB_create_context)
required = GL_TRUE;
}
if (fbconfig->samples > 0)
{
// We want FSAA, but can we get it?
// FSAA is not a hard constraint, so otherwise we just don't care
if (window->WGL.ARB_multisample && window->WGL.ARB_pixel_format)
{
// We appear to have both the extension and the means to ask for it
required = GL_TRUE;
}
}
if (required)
return _GLFW_RECREATION_REQUIRED;
return _GLFW_RECREATION_NOT_NEEDED;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////