def _get_arb_pixel_format_matching_configs(self, canvas):
'''Get configs using the WGL_ARB_pixel_format extension.
This method assumes a (dummy) GL context is already created.'''
# Check for required extensions
if self.sample_buffers or self.samples:
if not gl_info.have_extension('GL_ARB_multisample'):
return []
# Construct array of attributes
attrs = []
for name, value in self.get_gl_attributes():
attr = Win32CanvasConfigARB.attribute_ids.get(name, None)
if attr and value is not None:
attrs.extend([attr, int(value)])
attrs.append(0)
attrs = (c_int * len(attrs))(*attrs)
pformats = (c_int * 16)()
nformats = c_uint(16)
wglext_arb.wglChoosePixelFormatARB(canvas.hdc, attrs, None,
nformats, pformats, nformats)
formats = [Win32CanvasConfigARB(canvas, pf, self) \
for pf in pformats[:nformats.value]]
return formats
def _get_arb_pixel_format_matching_configs(self, canvas):
'''Get configs using the WGL_ARB_pixel_format extension.
This method assumes a (dummy) GL context is already created.'''
# Check for required extensions
if self.sample_buffers or self.samples:
if not gl_info.have_extension('GL_ARB_multisample'):
return []
# Construct array of attributes
attrs = []
for name, value in self.get_gl_attributes():
attr = Win32CanvasConfigARB.attribute_ids.get(name, None)
if attr and value is not None:
attrs.extend([attr, int(value)])
attrs.append(0)
attrs = (c_int * len(attrs))(*attrs)
pformats = (c_int * 16)()
nformats = c_uint(16)
wglext_arb.wglChoosePixelFormatARB(canvas.hdc, attrs, None, nformats,
pformats, nformats)
formats = [Win32CanvasConfigARB(canvas, pf, self) \
for pf in pformats[:nformats.value]]
return formats
