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from pyglet.canvas.win32 import Win32Canvas
from .base import Config, CanvasConfig, Context
from pyglet import gl
from pyglet.gl import gl_info
from pyglet.gl import wgl
from pyglet.gl import wglext_arb
from pyglet.gl import wgl_info
from pyglet.libs.win32 import _user32, _kernel32, _gdi32
from pyglet.libs.win32.constants import *
from pyglet.libs.win32.types import *
class Win32Config(Config):
def match(self, canvas):
if not isinstance(canvas, Win32Canvas):
raise RuntimeError('Canvas must be instance of Win32Canvas')
# Use ARB API if available
if gl_info.have_context() and wgl_info.have_extension('WGL_ARB_pixel_format'):
return self._get_arb_pixel_format_matching_configs(canvas)
else:
return self._get_pixel_format_descriptor_matching_configs(canvas)
def _get_pixel_format_descriptor_matching_configs(self, canvas):
"""Get matching configs using standard PIXELFORMATDESCRIPTOR
technique."""
pfd = PIXELFORMATDESCRIPTOR()
pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR)
pfd.nVersion = 1
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL
if self.double_buffer:
pfd.dwFlags |= PFD_DOUBLEBUFFER
else:
pfd.dwFlags |= PFD_DOUBLEBUFFER_DONTCARE
if self.stereo:
pfd.dwFlags |= PFD_STEREO
else:
pfd.dwFlags |= PFD_STEREO_DONTCARE
# Not supported in pyglet API
# if attributes.get('swap_copy', False):
# pfd.dwFlags |= PFD_SWAP_COPY
# if attributes.get('swap_exchange', False):
# pfd.dwFlags |= PFD_SWAP_EXCHANGE
if not self.depth_size:
pfd.dwFlags |= PFD_DEPTH_DONTCARE
pfd.iPixelType = PFD_TYPE_RGBA
pfd.cColorBits = self.buffer_size or 0
pfd.cRedBits = self.red_size or 0
pfd.cGreenBits = self.green_size or 0
pfd.cBlueBits = self.blue_size or 0
pfd.cAlphaBits = self.alpha_size or 0
pfd.cAccumRedBits = self.accum_red_size or 0
pfd.cAccumGreenBits = self.accum_green_size or 0
pfd.cAccumBlueBits = self.accum_blue_size or 0
pfd.cAccumAlphaBits = self.accum_alpha_size or 0
pfd.cDepthBits = self.depth_size or 0
pfd.cStencilBits = self.stencil_size or 0
pfd.cAuxBuffers = self.aux_buffers or 0
pf = _gdi32.ChoosePixelFormat(canvas.hdc, byref(pfd))
if pf:
return [Win32CanvasConfig(canvas, pf, self)]
else:
return []
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
class Win32CanvasConfig(CanvasConfig):
def __init__(self, canvas, pf, config):
super(Win32CanvasConfig, self).__init__(canvas, config)
self._pf = pf
self._pfd = PIXELFORMATDESCRIPTOR()
_gdi32.DescribePixelFormat(canvas.hdc, pf, sizeof(PIXELFORMATDESCRIPTOR), byref(self._pfd))
self.double_buffer = bool(self._pfd.dwFlags & PFD_DOUBLEBUFFER)
self.sample_buffers = 0
self.samples = 0
self.stereo = bool(self._pfd.dwFlags & PFD_STEREO)
self.buffer_size = self._pfd.cColorBits
self.red_size = self._pfd.cRedBits
self.green_size = self._pfd.cGreenBits
self.blue_size = self._pfd.cBlueBits
self.alpha_size = self._pfd.cAlphaBits
self.accum_red_size = self._pfd.cAccumRedBits
self.accum_green_size = self._pfd.cAccumGreenBits
self.accum_blue_size = self._pfd.cAccumBlueBits
self.accum_alpha_size = self._pfd.cAccumAlphaBits
self.depth_size = self._pfd.cDepthBits
self.stencil_size = self._pfd.cStencilBits
self.aux_buffers = self._pfd.cAuxBuffers
def compatible(self, canvas):
# TODO more careful checking
return isinstance(canvas, Win32Canvas)
def create_context(self, share):
return Win32Context(self, share)
def _set_pixel_format(self, canvas):
_gdi32.SetPixelFormat(canvas.hdc, self._pf, byref(self._pfd))
class Win32CanvasConfigARB(CanvasConfig):
attribute_ids = {
'double_buffer': wglext_arb.WGL_DOUBLE_BUFFER_ARB,
'stereo': wglext_arb.WGL_STEREO_ARB,
'buffer_size': wglext_arb.WGL_COLOR_BITS_ARB,
'aux_buffers': wglext_arb.WGL_AUX_BUFFERS_ARB,
'sample_buffers': wglext_arb.WGL_SAMPLE_BUFFERS_ARB,
'samples': wglext_arb.WGL_SAMPLES_ARB,
'red_size': wglext_arb.WGL_RED_BITS_ARB,
'green_size': wglext_arb.WGL_GREEN_BITS_ARB,
'blue_size': wglext_arb.WGL_BLUE_BITS_ARB,
'alpha_size': wglext_arb.WGL_ALPHA_BITS_ARB,
'depth_size': wglext_arb.WGL_DEPTH_BITS_ARB,
'stencil_size': wglext_arb.WGL_STENCIL_BITS_ARB,
'accum_red_size': wglext_arb.WGL_ACCUM_RED_BITS_ARB,
'accum_green_size': wglext_arb.WGL_ACCUM_GREEN_BITS_ARB,
'accum_blue_size': wglext_arb.WGL_ACCUM_BLUE_BITS_ARB,
'accum_alpha_size': wglext_arb.WGL_ACCUM_ALPHA_BITS_ARB,
}
def __init__(self, canvas, pf, config):
super(Win32CanvasConfigARB, self).__init__(canvas, config)
self._pf = pf
names = list(self.attribute_ids.keys())
attrs = list(self.attribute_ids.values())
attrs = (c_int * len(attrs))(*attrs)
values = (c_int * len(attrs))()
wglext_arb.wglGetPixelFormatAttribivARB(canvas.hdc, pf, 0, len(attrs), attrs, values)
for name, value in zip(names, values):
setattr(self, name, value)
def compatible(self, canvas):
# TODO more careful checking
return isinstance(canvas, Win32Canvas)
def create_context(self, share):
if wgl_info.have_extension('WGL_ARB_create_context'):
# Graphics adapters that ONLY support up to OpenGL 3.1/3.2
# should be using the Win32ARBContext class.
return Win32ARBContext(self, share)
else:
return Win32Context(self, share)
def _set_pixel_format(self, canvas):
_gdi32.SetPixelFormat(canvas.hdc, self._pf, None)
class Win32Context(Context):
def __init__(self, config, share):
super(Win32Context, self).__init__(config, share)
self._context = None
def attach(self, canvas):
super(Win32Context, self).attach(canvas)
if not self._context:
self.config._set_pixel_format(canvas)
self._context = wgl.wglCreateContext(canvas.hdc)
share = self.context_share
if share:
if not share.canvas:
raise RuntimeError('Share context has no canvas.')
if not wgl.wglShareLists(share._context, self._context):
raise gl.ContextException('Unable to share contexts.')
def set_current(self):
if self._context is not None and self != gl.current_context:
wgl.wglMakeCurrent(self.canvas.hdc, self._context)
super(Win32Context, self).set_current()
def detach(self):
if self.canvas:
wgl.wglDeleteContext(self._context)
self._context = None
super(Win32Context, self).detach()
def flip(self):
_gdi32.SwapBuffers(self.canvas.hdc)
def get_vsync(self):
if wgl_info.have_extension('WGL_EXT_swap_control'):
return bool(wglext_arb.wglGetSwapIntervalEXT())
def set_vsync(self, vsync):
if wgl_info.have_extension('WGL_EXT_swap_control'):
wglext_arb.wglSwapIntervalEXT(int(vsync))
class Win32ARBContext(Win32Context):
def __init__(self, config, share):
super(Win32ARBContext, self).__init__(config, share)
def attach(self, canvas):
share = self.context_share
if share:
if not share.canvas:
raise RuntimeError('Share context has no canvas.')
share = share._context
attribs = []
if self.config.major_version is not None:
attribs.extend([wglext_arb.WGL_CONTEXT_MAJOR_VERSION_ARB, self.config.major_version])
if self.config.minor_version is not None:
attribs.extend([wglext_arb.WGL_CONTEXT_MINOR_VERSION_ARB, self.config.minor_version])
flags = 0
if self.config.forward_compatible:
flags |= wglext_arb.WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB
if self.config.debug:
flags |= wglext_arb.WGL_DEBUG_BIT_ARB
if flags:
attribs.extend([wglext_arb.WGL_CONTEXT_FLAGS_ARB, flags])
attribs.append(0)
attribs = (c_int * len(attribs))(*attribs)
self.config._set_pixel_format(canvas)
self._context = wglext_arb.wglCreateContextAttribsARB(canvas.hdc, share, attribs)
super(Win32ARBContext, self).attach(canvas)
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