Question

我正在尝试为OpenGL 4.3创建渲染上下文。我已经创建了一个临时渲染上下文，以便加载所有扩展，然后销毁这个临时渲染上下文，它可以工作，所有功能都被加载。

现在我必须创建最终的渲染上下文，但似乎我找不到好的像素格式。

这是我用来尝试查找像素格式并创建最终渲染上下文的函数：

int attributeListInt[19];
int pixelFormat[20];
unsigned int formatCount;
int result;
PIXELFORMATDESCRIPTOR pixelFormatDescriptor;
int attributeList[5];
float fieldOfView, screenAspect;
char *vendorString, *rendererString;

m_hDeviceContext = GetDC(m_hWnd);
if (!m_hDeviceContext)
    return false;

attributeListInt[0] = WGL_SUPPORT_OPENGL_ARB;
attributeListInt[1] = TRUE;

attributeListInt[2] = WGL_DRAW_TO_WINDOW_ARB;
attributeListInt[3] = TRUE;

attributeListInt[4] = WGL_ACCELERATION_ARB;
attributeListInt[5] = WGL_FULL_ACCELERATION_ARB;

attributeListInt[6] = WGL_COLOR_BITS_ARB;
attributeListInt[7] = 32;

attributeListInt[8] = WGL_DEPTH_BITS_ARB;
attributeListInt[9] = 24;

attributeListInt[10] = WGL_DOUBLE_BUFFER_ARB;
attributeListInt[11] = TRUE;

attributeListInt[12] = WGL_SWAP_METHOD_ARB;
attributeListInt[13] = WGL_SWAP_EXCHANGE_ARB;

attributeListInt[14] = WGL_PIXEL_TYPE_ARB;
attributeListInt[15] = WGL_TYPE_RGBA_ARB;

attributeListInt[16] = WGL_STENCIL_BITS_ARB;
attributeListInt[17] = 8;

attributeListInt[18] = 0;

result = wglChoosePixelFormatARB(m_hDeviceContext, attributeListInt, NULL, 20, pixelFormat, &formatCount);
if (result != 1)
    return false;

bool bCreatedSuccessfully = false;

for (int i = 0; i < formatCount && !bCreatedSuccessfully; i++)
{
    result = SetPixelFormat(m_hDeviceContext, pixelFormat[i], &pixelFormatDescriptor);

    if (result == 1)
        bCreatedSuccessfully = true;
}

if (!bCreatedSuccessfully)
    return false;

if (m_bOpenGL43)
{
    attributeList[0] = WGL_CONTEXT_MAJOR_VERSION_ARB;
    attributeList[1] = 4;
    attributeList[2] = WGL_CONTEXT_MINOR_VERSION_ARB;
    attributeList[3] = 3;
}
else
{
    attributeList[0] = WGL_CONTEXT_MAJOR_VERSION_ARB;
    attributeList[1] = 3;
    attributeList[2] = WGL_CONTEXT_MINOR_VERSION_ARB;
    attributeList[3] = 3;
}

attributeList[4] = 0;

m_hRenderingContext = wglCreateContextAttribsARB(m_hDeviceContext, 0, attributeList);
if (m_hRenderingContext == NULL)
    return false;

result = wglMakeCurrent(m_hDeviceContext, m_hRenderingContext);
if (result != 1)
    return false;

glClearDepth(1.0f);
glEnable(GL_DEPTH_TEST);
glFrontFace(GL_CW);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);

if (bVSyncEnalbed)
    result = wglSwapIntervalEXT(1);
else
    result = wglSwapIntervalEXT(0);

if (result != 1)
    return false;

m_bInitialized = true;

return true;

我的问题是wglChoosePixelFormatARB返回10个可用的像素格式，但它们似乎都没有，因为SetPixelFormat总是返回FALSE。

有什么想法吗？

OpenGL 4.3的像素格式

0 个答案: