我試圖在沒有專用圖形卡的計算機上配置幀緩衝區。只有檯面GL。glXChooseFBConfig返回NULL
我試過多個FB配置,但我似乎無法得到非NULL返回。相同的代碼工作的另一臺計算機與NVIDIA驅動程序上..
OpenGL vendor string: Tungsten Graphics Inc
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Desktop
OpenGL version string: 3.0 Mesa 8.0.4
OpenGL shading language version string: 1.30
檯面例子另一臺計算機上的工作也沒有在同一glXFBConfig線。
這裏就像我說的,我試着用不同的配置,如代碼
int fbAttribs[] = {
None
};
int numberOfFramebufferConfigurations = 0;
GLXFBConfig* fbConfigs = glXChooseFBConfig(self->display, DefaultScreen(self->display), fbAttribs, &numberOfFramebufferConfigurations);
的相關部分:
int fbAttribs[NUM_FB_CONFIGS][100] = {
{
/* Single buffered, with depth buffer */
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DEPTH_SIZE, 1,
GLX_DOUBLEBUFFER, 0,
GLX_STENCIL_SIZE, 0,
None
},
{
/* Double buffered, with depth buffer */
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DEPTH_SIZE, 1,
GLX_DOUBLEBUFFER, 1,
GLX_STENCIL_SIZE, 0,
None
},
{
/* Single buffered, without depth buffer */
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DEPTH_SIZE, 0,
GLX_DOUBLEBUFFER, 0,
GLX_STENCIL_SIZE, 0,
None
},
{
/* Double buffered, without depth buffer */
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT,
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DEPTH_SIZE, 0,
GLX_DOUBLEBUFFER, 1,
GLX_STENCIL_SIZE, 0,
None
}
};
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DEPTH_SIZE, 0,
GLX_DOUBLEBUFFER, 1,
GLX_STENCIL_SIZE, 0,
None
}
};
我用'export DISPLAY =:0'將'DISPLAY'變量設置爲':0'。它以前被設置爲「:1」。我也在ssh'ing機器,雖然我沒有提供'-X'選項。我是不是該?無論如何,'glXChooseFBConfig'仍然失敗。 – richizy