本文整理汇总了C++中ContextFormat::colorBits方法的典型用法代码示例。如果您正苦于以下问题：C++ ContextFormat::colorBits方法的具体用法？C++ ContextFormat::colorBits怎么用？C++ ContextFormat::colorBits使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ContextFormat的用法示例。
在下文中一共展示了ContextFormat::colorBits方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: while
static already_AddRefed<GLContextWGL>
CreatePBufferOffscreenContext(const gfxIntSize& aSize,
const ContextFormat& aFormat)
{
#define A1(_a,_x) do { _a.AppendElement(_x); } while(0)
#define A2(_a,_x,_y) do { _a.AppendElement(_x); _a.AppendElement(_y); } while(0)
nsTArray<int> attrs;
A2(attrs, LOCAL_WGL_SUPPORT_OPENGL_ARB, LOCAL_GL_TRUE);
A2(attrs, LOCAL_WGL_DRAW_TO_PBUFFER_ARB, LOCAL_GL_TRUE);
A2(attrs, LOCAL_WGL_DOUBLE_BUFFER_ARB, LOCAL_GL_FALSE);
A2(attrs, LOCAL_WGL_ACCELERATION_ARB, LOCAL_WGL_FULL_ACCELERATION_ARB);
A2(attrs, LOCAL_WGL_COLOR_BITS_ARB, aFormat.colorBits());
A2(attrs, LOCAL_WGL_RED_BITS_ARB, aFormat.red);
A2(attrs, LOCAL_WGL_GREEN_BITS_ARB, aFormat.green);
A2(attrs, LOCAL_WGL_BLUE_BITS_ARB, aFormat.blue);
A2(attrs, LOCAL_WGL_ALPHA_BITS_ARB, aFormat.alpha);
A2(attrs, LOCAL_WGL_DEPTH_BITS_ARB, aFormat.depth);
A2(attrs, LOCAL_WGL_STENCIL_BITS_ARB, aFormat.stencil);
if (aFormat.alpha > 0) {
A2(attrs, LOCAL_WGL_BIND_TO_TEXTURE_RGBA_ARB, LOCAL_GL_TRUE);
} else {
A2(attrs, LOCAL_WGL_BIND_TO_TEXTURE_RGB_ARB, LOCAL_GL_TRUE);
}
A2(attrs, LOCAL_WGL_DOUBLE_BUFFER_ARB, LOCAL_GL_FALSE);
A2(attrs, LOCAL_WGL_STEREO_ARB, LOCAL_GL_FALSE);
A1(attrs, 0);
nsTArray<int> pbattrs;
A2(pbattrs, LOCAL_WGL_TEXTURE_TARGET_ARB, LOCAL_WGL_TEXTURE_2D_ARB);
if (aFormat.alpha > 0) {
A2(pbattrs, LOCAL_WGL_TEXTURE_FORMAT_ARB, LOCAL_WGL_TEXTURE_RGBA_ARB);
} else {
A2(pbattrs, LOCAL_WGL_TEXTURE_FORMAT_ARB, LOCAL_WGL_TEXTURE_RGB_ARB);
}
A1(pbattrs, 0);
UINT numFormats = 256;
int formats[256];
if (!sWGLLibrary.fChoosePixelFormat(gSharedWindowDC,
attrs.Elements(), NULL,
numFormats, formats, &numFormats)
|| numFormats == 0)
{
return nsnull;
}
// XXX add back the priority choosing code here
int chosenFormat = formats[0];
if (!IsValidSizeForFormat(gSharedWindowDC, chosenFormat, aSize))
return nsnull;
HANDLE pbuffer = sWGLLibrary.fCreatePbuffer(gSharedWindowDC, chosenFormat,
aSize.width, aSize.height,
pbattrs.Elements());
if (!pbuffer) {
return nsnull;
}
HDC pbdc = sWGLLibrary.fGetPbufferDC(pbuffer);
NS_ASSERTION(pbdc, "expected a dc");
HGLRC context;
if (sWGLLibrary.HasRobustness()) {
int attribs[] = {
LOCAL_WGL_CONTEXT_FLAGS_ARB, LOCAL_WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB,
LOCAL_WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB, LOCAL_WGL_LOSE_CONTEXT_ON_RESET_ARB,
NULL
};
context = sWGLLibrary.fCreateContextAttribs(pbdc, nsnull, attribs);
} else {
context = sWGLLibrary.fCreateContext(pbdc);
}
if (!context) {
sWGLLibrary.fDestroyPbuffer(pbuffer);
return false;
}
nsRefPtr<GLContextWGL> glContext = new GLContextWGL(aFormat,
nsnull,
pbuffer,
pbdc,
context,
chosenFormat);
return glContext.forget();
}