问题描述
ContextWin32 :: ContextWin32(WindowHandle parent,NLOpenGLSettings settings)
:IPlatformContext(parent,settings)
{
int pf = 0;
PIXELFORMATDESCRIPTOR pfd = {0};
OSVERSIONINFO osvi = {0};
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
//获取此窗口的HDC。
if(!(m_hdc = GetDC((HWND)parent)))
{
NLError([ContextWin32] GetDC
throw NLException(GetDC()failed。,true);
}
//为窗口创建和设置像素格式。
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = settings.BPP;
pfd.cDepthBits = settings.BPP;
pfd.iLayerType = PFD_MAIN_PLANE;
//获取Windows版本
if(!GetVersionEx(& osvi))
{
NLError([ContextWin32] GetVersionEx()失败。
throw NLException([ContextWin32] GetVersionEx()failed。);
}
//根据我们的设置获取像素格式
pf = ChoosePixelFormat(m_hdc,& pfd);
//设置像素格式
if(!SetPixelFormat(m_hdc,pf,& pfd))
{
NLError([ContextWin32] GetVersionEx 。);
throw NLException([ContextWin32] SetPixelFormat()failed。);
}
//在Windows Vista或更高版本下运行时支持桌面组合。
//在全屏模式下运行时并不适用。
if(osvi.dwMajorVersion> 6 ||(osvi.dwMajorVersion == 6&& osvi.dwMinorVersion> = 0))
pfd.dwFlags | = PFD_SUPPORT_COMPOSITION;
//验证这个OpenGL实现是否支持我们需要的扩展
std :: string extensions = wglGetExtensionsStringARB(m_hdc);
如果(extensions.find(WGL_ARB_create_context)==标准::字符串::非营利组织){
NLError([ContextWin32]必扩展不支持WGL_ARB_create_context。);
throw NLException([ContextWin32]不支持所需的扩展名WGL_ARB_create_context。
}
INT attribList [] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB,settings.MAJOR,
WGL_CONTEXT_MINOR_VERSION_ARB,settings.MINOR,
WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
WGL_CONTEXT_PROFILE_MASK_ARB,WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
WGL_DRAW_TO_WINDOW_ARB,GL_TRUE,
WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
WGL_DOUBLE_BUFFER_ARB,GL_TRUE,
WGL_PIXEL_TYPE_ARB,WGL_TYPE_RGBA_ARB,
WGL_COLOR_BITS_ARB ,32,
WGL_DEPTH_BITS_ARB,24,
0
};
//首先尝试创建一个OpenGL上下文。
if(!(m_hglrc = wglCreateContextAttribsARB(m_hdc,0,attribList)))
{
//回到OpenGL 3.0上下文。
attribList [3] = 0;
如果{
NLError([ContextWin32] wglCreateContextAttribsARB()失败的OpenGL 3上下文。)((m_hglrc = wglCreateContextAttribsARB(m_hdc,0,attribList))!);
throw NLException([ContextWin32] wglCreateContextAttribsARB()失败了OpenGL 3上下文,true);
}
}
如果(!wglMakeCurrent(m_hdc,m_hglrc)){
NLError([ContextWin32] wglMakeCurrent()失败的OpenGL 3上下文。) ;
throw NLException([ContextWin32] wglMakeCurrent()失败了OpenGL 3上下文。
}
//加载wglSwapIntervalExt
typedef BOOL(APIENTRY * PFNWGLSWAPINTERVALEXTPROC)(int);
static PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT = 0;
wglSwapIntervalEXT = reinterpret_cast< PFNWGLSWAPINTERVALEXTPROC>(wglGetProcAddress(wglSwapIntervalEXT));
if(wglSwapIntervalEXT)
{
if(settings.VSYNC == true)
{
wglSwapIntervalEXT(1);
}
else if(settings.VSYNC == false)
{
wglSwapIntervalEXT(0);
}
}
else if(wglSwapIntervalEXT == NULL)
{
NLWarning([ContextWin32]无法加载wglSwapIntervalEXT
}
}
这是有问题的代码。
当我尝试设置属性时,它在77行上失败。
但是相同的代码适用于我的ATI。
我没有任何NVIDIA产品,并且不能再现它,但我需要修复它当然。任何人都可以帮助这个问题?我忽略了什么?
我的定义:
externC {
的#define ERROR_INVALID_VERSION_ARB 0x2095
的#define WGL_CONTEXT_DEBUG_BIT_ARB 0x0001的
的#define WGL_CONTEXT_FLAGS_ARB 0x2094
的#define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB为0x0002
的#define WGL_CONTEXT_LAYER_PLANE_ARB 0x2093
#定义WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
的#define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
的#define WGL_CONTEXT_CORE_PROFILE_BIT_ARB 00000001
的#define WGL_CONTEXT_PROFILE_MASK_ARB 0x9126
的#define WGL_NUMBER_PIXEL_FORMATS_ARB为0x2000
的#define WGL_DRAW_TO_WINDOW_ARB 0x2001
的#define WGL_DRAW_TO_BITMAP_ARB 0x2002
的#define WGL_ACCELERATION_ARB 0x2003
的#define WGL_NEED_PALETTE_ARB 0x2004
的#define WGL_NEED_SYSTEM_PALETTE_ARB 0x2005
的#define WGL_SWAP_LAYER_BUFFERS_ARB 0x2006
的#define WGL_SWAP_METHOD_ARB 0x2007
的#define WGL_NUMBER_OVERLAYS_ARB 0x2008
的#define WGL_NUMBER_UNDERLAYS_ARB西班牙语 - 秘鲁
的#define WGL_TRANSPARENT_ARB 0x200A
的#define WGL_TRANSPARENT_RED_VALUE_ARB 0x2037
的#define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038
的#define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039
的#define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A
的#define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B
的#define WGL_SHARE_DEPTH_ARB 0x200C
的#define WGL_SHARE_STENCIL_ARB 0x200D
的#define WGL_SHARE_ACCUM_ARB 0x200E
的#define WGL_SUPPORT_GDI_ARB 0x200F
#定义WGL_SUPPORT_OPENGL_ARB 0x2010
的#define WGL_DOUBLE_BUFFER_ARB 0x2011
的#define WGL_STEREO_ARB 0x2012
的#define WGL_PIXEL_TYPE_ARB 0x2013
的#define WGL_COLOR_BITS_ARB 0x2014
的#define WGL_RED_BITS_ARB 0x2015
的#define WGL_RED_SHIFT_ARB 0x2016
的#define WGL_GREEN_BITS_ARB 0x2017
的#define WGL_GREEN_SHIFT_ARB 0x2018
的#define WGL_BLUE_BITS_ARB 0x2019
的#define WGL_BLUE_SHIFT_ARB 0x201A
的#define WGL_ALPHA_BITS_ARB 0x201B
的#define WGL_ALPHA_SHIFT_ARB 0x201C
的#define WGL_ACCUM_BITS_ARB 0x201D
的#define WGL_ACCUM_RED_BITS_ARB 0x201E
的#define WGL_ACCUM_GREEN_BITS_ARB 0x201F
的#define WGL_ACCUM_BLUE_BITS_ARB 0x2020
的#define WGL_ACCUM_ALPHA_BITS_ARB 0x2021
的#define WGL_DEPTH_BITS_ARB 0x2022
的#define WGL_STENCIL_BITS_ARB 0x2023
的#define WGL_AUX_BUFFERS_ARB 0x2024
的#define WGL_NO_ACCELERATION_ARB 0x2025
的#define WGL_GENERIC_ACCELERATION_ARB 0x2026
的#define WGL_FULL_ACCELERATION_ARB 0x2027
的#define WGL_SWAP_EXCHANGE_ARB 0x2028
的#define WGL_SWAP_COPY_ARB 0x2029
的#define WGL_SWAP_UNDEFINED_ARB 0x202A
的#define WGL_TYPE_RGBA_ARB 0x202B
的#define WGL_TYPE_COLORINDEX_ARB 0x202C
的extern HGLRC wglCreateContextAttribsARB(HDC的hDC ,HGLRC hShareContext,const int * attribList);
}
也许我有一些#defines错了?
任何输入都非常感谢。
ps:关于AttribList [3]的小毛刺= 0;
从 attribList
em>'以下对:- WGL_ACCELERATION_ARB
- WGL_DRAW_TO_WINDOW_ARB
- WGL_SUPPORT_OPENGL_ARB(显然,支持OpenGL!)
- WGL_DOUBLE_BUFFER_ARB
- WGL_PIXEL_TYPE_ARB
- WGL_COLOR_BITS_ARB
- WGL_DEPTH_BITS_ARB
这些属性名称已由'* m_hdc *'句柄指定
我在NVIDIA平台上创建一个没有这些标志的有效上下文。
CreateContextAttribsARB 的有效属性名称是:
WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
WGL_CONTEXT_LAYER_PLANE_ARB 0x2093
WGL_CONTEXT_FLAGS_ARB 0x2094
WGL_CONTEXT_PROFILE_MASK_ARB 0x9126
错误是否正在返回 wglCreateContextAttribsARB ?
实例示例:
int err = Gl.GetError();
switch(err){
case Gl.INVALID_OPERATION:
throw new InvalidOperationException(String.Format(无法创建上下文{0} ),sVersionDb [version] .GLMajor,sVersionDb [version] .GLMinor,invalid operation));
case Wgl.ERROR_INVALID_VERSION_ARB:
throw new InvalidOperationException(String.Format(无法创建上下文{0}。{1}({2}),sVersionDb [version] .GLMajor,sVersionDb [version ] .GLMinor,invalid version));
case Wgl.ERROR_INVALID_PROFILE_ARB:
throw new InvalidOperationException(String.Format(无法创建上下文{0}。{1}({2}),sVersionDb [version] .GLMajor,sVersionDb [version ] .GLMinor,invalid profile));
case Wgl.ERROR_INVALID_PIXEL_TYPE_ARB:
throw new InvalidOperationException(String.Format(无法创建上下文{0}。{1}({2}),sVersionDb [version] .GLMajor,sVersionDb [version ] .GLMinor,invalid pixel format));
默认值:
throw new InvalidOperationException(String.Format(无法创建上下文{0}。{1}({2}),sVersionDb [version] .GLMajor,sVersionDb [version] .GLMinor ,unknown error+ err));
}
ContextWin32::ContextWin32(WindowHandle parent, NLOpenGLSettings settings)
: IPlatformContext(parent, settings)
{
int pf = 0;
PIXELFORMATDESCRIPTOR pfd = {0};
OSVERSIONINFO osvi = {0};
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
// Obtain HDC for this window.
if (!(m_hdc = GetDC((HWND)parent)))
{
NLError("[ContextWin32] GetDC() failed.");
throw NLException("GetDC() failed.", true);
}
// Create and set a pixel format for the window.
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = settings.BPP;
pfd.cDepthBits = settings.BPP;
pfd.iLayerType = PFD_MAIN_PLANE;
// Obtain Windows Version
if (!GetVersionEx(&osvi))
{
NLError("[ContextWin32] GetVersionEx() failed.");
throw NLException("[ContextWin32] GetVersionEx() failed.");
}
// Get a pixelformat, based on our settings
pf = ChoosePixelFormat(m_hdc, &pfd);
// Set the pixelformat
if (!SetPixelFormat(m_hdc, pf, &pfd))
{
NLError("[ContextWin32] GetVersionEx() failed.");
throw NLException("[ContextWin32] SetPixelFormat() failed.");
}
// When running under Windows Vista or later support desktop composition.
// This doesn't really apply when running in full screen mode.
if (osvi.dwMajorVersion > 6 || (osvi.dwMajorVersion == 6 && osvi.dwMinorVersion >= 0))
pfd.dwFlags |= PFD_SUPPORT_COMPOSITION;
// Verify that this OpenGL implementation supports the extensions we need
std::string extensions = wglGetExtensionsStringARB(m_hdc);
if (extensions.find("WGL_ARB_create_context") == std::string::npos){
NLError("[ContextWin32] Required extension WGL_ARB_create_context is not supported.");
throw NLException("[ContextWin32] Required extension WGL_ARB_create_context is not supported.");
}
int attribList[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, settings.MAJOR,
WGL_CONTEXT_MINOR_VERSION_ARB, settings.MINOR,
WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
WGL_DRAW_TO_WINDOW_ARB, GL_TRUE,
WGL_SUPPORT_OPENGL_ARB, GL_TRUE,
WGL_DOUBLE_BUFFER_ARB, GL_TRUE,
WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB,
WGL_COLOR_BITS_ARB, 32,
WGL_DEPTH_BITS_ARB, 24,
0
};
// First try creating an OpenGL context.
if (!(m_hglrc = wglCreateContextAttribsARB(m_hdc, 0, attribList)))
{
// Fall back to an OpenGL 3.0 context.
attribList[3] = 0;
if (!(m_hglrc = wglCreateContextAttribsARB(m_hdc, 0, attribList))){
NLError("[ContextWin32] wglCreateContextAttribsARB() failed for OpenGL 3 context.");
throw NLException("[ContextWin32] wglCreateContextAttribsARB() failed for OpenGL 3 context.", true);
}
}
if (!wglMakeCurrent(m_hdc, m_hglrc)){
NLError("[ContextWin32] wglMakeCurrent() failed for OpenGL 3 context.");
throw NLException("[ContextWin32] wglMakeCurrent() failed for OpenGL 3 context.");
}
// Load wglSwapIntervalExt
typedef BOOL (APIENTRY * PFNWGLSWAPINTERVALEXTPROC)(int);
static PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT = 0;
wglSwapIntervalEXT = reinterpret_cast<PFNWGLSWAPINTERVALEXTPROC>(wglGetProcAddress("wglSwapIntervalEXT"));
if ( wglSwapIntervalEXT )
{
if ( settings.VSYNC == true )
{
wglSwapIntervalEXT(1);
}
else if ( settings.VSYNC == false )
{
wglSwapIntervalEXT(0);
}
}
else if (wglSwapIntervalEXT == NULL )
{
NLWarning("[ContextWin32] Cannot load wglSwapIntervalEXT");
}
}
This is the code in question.It fails on Line 77, when I try to set the Attributes.But the very same code works on my ATI.I do not own any NVIDIA Product and cannot reproduce it, but I need to fix it of course. Can anyone help on the issue? What did I overlook?
My Definitions:
extern "C" {
#define ERROR_INVALID_VERSION_ARB 0x2095
#define WGL_CONTEXT_DEBUG_BIT_ARB 0x0001
#define WGL_CONTEXT_FLAGS_ARB 0x2094
#define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002
#define WGL_CONTEXT_LAYER_PLANE_ARB 0x2093
#define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
#define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
#define WGL_CONTEXT_CORE_PROFILE_BIT_ARB 0x00000001
#define WGL_CONTEXT_PROFILE_MASK_ARB 0x9126
#define WGL_NUMBER_PIXEL_FORMATS_ARB 0x2000
#define WGL_DRAW_TO_WINDOW_ARB 0x2001
#define WGL_DRAW_TO_BITMAP_ARB 0x2002
#define WGL_ACCELERATION_ARB 0x2003
#define WGL_NEED_PALETTE_ARB 0x2004
#define WGL_NEED_SYSTEM_PALETTE_ARB 0x2005
#define WGL_SWAP_LAYER_BUFFERS_ARB 0x2006
#define WGL_SWAP_METHOD_ARB 0x2007
#define WGL_NUMBER_OVERLAYS_ARB 0x2008
#define WGL_NUMBER_UNDERLAYS_ARB 0x2009
#define WGL_TRANSPARENT_ARB 0x200A
#define WGL_TRANSPARENT_RED_VALUE_ARB 0x2037
#define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038
#define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039
#define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A
#define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B
#define WGL_SHARE_DEPTH_ARB 0x200C
#define WGL_SHARE_STENCIL_ARB 0x200D
#define WGL_SHARE_ACCUM_ARB 0x200E
#define WGL_SUPPORT_GDI_ARB 0x200F
#define WGL_SUPPORT_OPENGL_ARB 0x2010
#define WGL_DOUBLE_BUFFER_ARB 0x2011
#define WGL_STEREO_ARB 0x2012
#define WGL_PIXEL_TYPE_ARB 0x2013
#define WGL_COLOR_BITS_ARB 0x2014
#define WGL_RED_BITS_ARB 0x2015
#define WGL_RED_SHIFT_ARB 0x2016
#define WGL_GREEN_BITS_ARB 0x2017
#define WGL_GREEN_SHIFT_ARB 0x2018
#define WGL_BLUE_BITS_ARB 0x2019
#define WGL_BLUE_SHIFT_ARB 0x201A
#define WGL_ALPHA_BITS_ARB 0x201B
#define WGL_ALPHA_SHIFT_ARB 0x201C
#define WGL_ACCUM_BITS_ARB 0x201D
#define WGL_ACCUM_RED_BITS_ARB 0x201E
#define WGL_ACCUM_GREEN_BITS_ARB 0x201F
#define WGL_ACCUM_BLUE_BITS_ARB 0x2020
#define WGL_ACCUM_ALPHA_BITS_ARB 0x2021
#define WGL_DEPTH_BITS_ARB 0x2022
#define WGL_STENCIL_BITS_ARB 0x2023
#define WGL_AUX_BUFFERS_ARB 0x2024
#define WGL_NO_ACCELERATION_ARB 0x2025
#define WGL_GENERIC_ACCELERATION_ARB 0x2026
#define WGL_FULL_ACCELERATION_ARB 0x2027
#define WGL_SWAP_EXCHANGE_ARB 0x2028
#define WGL_SWAP_COPY_ARB 0x2029
#define WGL_SWAP_UNDEFINED_ARB 0x202A
#define WGL_TYPE_RGBA_ARB 0x202B
#define WGL_TYPE_COLORINDEX_ARB 0x202C
extern HGLRC wglCreateContextAttribsARB(HDC hDC, HGLRC hShareContext, const int *attribList);
}
Maybe I got some #defines wrong?
Any input is highly appreciated.
ps.: The little glitch regarding AttribList[3] = 0; is fixed by now, must be 1. But that was not the issue.
Remove from 'attribList' the following pairs:
- WGL_ACCELERATION_ARB
- WGL_DRAW_TO_WINDOW_ARB
- WGL_SUPPORT_OPENGL_ARB (obvious that support OpenGL!)
- WGL_DOUBLE_BUFFER_ARB
- WGL_PIXEL_TYPE_ARB
- WGL_COLOR_BITS_ARB
- WGL_DEPTH_BITS_ARB
Those attribute names are already specified by the '*m_hdc*' handle (infact you call SetPixelFormat on it).
I create a valid context without those flags on NVIDIA platforms.
Valid attribute names for CreateContextAttribsARB are:
WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
WGL_CONTEXT_LAYER_PLANE_ARB 0x2093
WGL_CONTEXT_FLAGS_ARB 0x2094
WGL_CONTEXT_PROFILE_MASK_ARB 0x9126
Furthermore, what error is returning wglCreateContextAttribsARB?
Instance example:
int err = Gl.GetError();
switch (err) {
case Gl.INVALID_OPERATION:
throw new InvalidOperationException(String.Format("unable to create context {0}.{1} ({2})", sVersionDb[version].GLMajor, sVersionDb[version].GLMinor, "invalid operation"));
case Wgl.ERROR_INVALID_VERSION_ARB:
throw new InvalidOperationException(String.Format("unable to create context {0}.{1} ({2})", sVersionDb[version].GLMajor, sVersionDb[version].GLMinor, "invalid version"));
case Wgl.ERROR_INVALID_PROFILE_ARB:
throw new InvalidOperationException(String.Format("unable to create context {0}.{1} ({2})", sVersionDb[version].GLMajor, sVersionDb[version].GLMinor, "invalid profile"));
case Wgl.ERROR_INVALID_PIXEL_TYPE_ARB:
throw new InvalidOperationException(String.Format("unable to create context {0}.{1} ({2})", sVersionDb[version].GLMajor, sVersionDb[version].GLMinor, "invalid pixel format"));
default:
throw new InvalidOperationException(String.Format("unable to create context {0}.{1} ({2})", sVersionDb[version].GLMajor, sVersionDb[version].GLMinor, "unknown error " + err));
}
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