Package panamagl.platform.windows

Class WGLContext_windows

java.lang.Object

panamagl.opengl.AGLContext

panamagl.platform.windows.WGLContext_windows

All Implemented Interfaces:

panamagl.opengl.GLContext

public class WGLContext_windows
extends panamagl.opengl.AGLContext
implements panamagl.opengl.GLContext

WIP Windows context

Author:

Martin Pernollet

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	advanced
protected MemorySegment	context
protected boolean	debug
protected MemorySegment	hdc
protected MemorySegment	hWnd
protected MemorySegment	wglChoosePixelFormatARB
protected MemorySegment	wglCreateContextAttribsARB
protected int[]	windowHandle

Fields inherited from class panamagl.opengl.AGLContext

arena, initialized, profile

Constructor Summary

Constructors

Constructor	Description
WGLContext_windows()
WGLContext_windows(boolean advanced)

Method Summary

Modifier and Type	Method	Description
protected MemorySegment	createDummyWindow()	Create a minimal invisible 1x1 popup window whose sole purpose is to provide a valid HWND+DC for WGL pixel format selection and context creation.
void	destroy()
int	getWindowHandle()
protected panamagl.opengl.GLError	getWindowsLastError()	Retrieve last error code while setting up the WGL context.
void	init()
protected void	initAdvanced()	Init context the advanced way
protected void	initFunctions()	Function pointers for advanced context initialization.
protected void	initHDC()	Retrieve a handle to the device context required for initializing the WGL context.
protected void	initSimple()	Init context the simpl way
void	makeCurrent()
void	setWindowHandle(int handle)

Methods inherited from class panamagl.opengl.AGLContext

getProfile, initArena, isInitialized, setProfile

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface panamagl.opengl.GLContext

getProfile, isInitialized, setProfile

Field Details

windowHandle

protected int[] windowHandle

hWnd

protected MemorySegment hWnd

hdc

protected MemorySegment hdc

context

protected MemorySegment context

debug

protected boolean debug

advanced

protected boolean advanced

wglChoosePixelFormatARB

protected MemorySegment wglChoosePixelFormatARB

wglCreateContextAttribsARB

protected MemorySegment wglCreateContextAttribsARB

Constructor Details

WGLContext_windows

public WGLContext_windows()

WGLContext_windows

public WGLContext_windows(boolean advanced)

Method Details

init

public void init()

Specified by:

init in interface panamagl.opengl.GLContext

destroy

public void destroy()

Specified by:

destroy in interface panamagl.opengl.GLContext

makeCurrent

public void makeCurrent()

initSimple

protected void initSimple()

Init context the simpl way

initAdvanced

protected void initAdvanced()

Init context the advanced way

initFunctions

protected void initFunctions()

Function pointers for advanced context initialization.

initHDC

protected void initHDC()

Retrieve a handle to the device context required for initializing the WGL context. When no window handle is provided, a small invisible dummy window is created to obtain a valid HWND-based DC. GetDC(NULL) (screen DC) must not be used: it is not valid for WGL context creation with modern drivers such as Mesa that require a real HWND to set up their rendering backend.

createDummyWindow

protected MemorySegment createDummyWindow()

Create a minimal invisible 1x1 popup window whose sole purpose is to provide a valid HWND+DC for WGL pixel format selection and context creation. CS_OWNDC ensures the DC is permanently associated with the window (required by WGL).

getWindowsLastError

protected panamagl.opengl.GLError getWindowsLastError()

Retrieve last error code while setting up the WGL context. Different from GL error.

getWindowHandle

public int getWindowHandle()

setWindowHandle

public void setWindowHandle(int handle)