SDI Technologies iH30 Especificações descarregar pdf (Página 26)

Data Transfer

Quadro SDI Output PG-03776-001_v06 | 21

if (glXGetFBConfigAttrib(dpy, configs[i],

GLX_ALPHA_SIZE, &attr)) {

// Handle error

}

if (attr != 16)

continue;

break;

}

if (i == nelements) {

printf("No 16-bit FBConfigs found\n");

return -1;

}

// Config found

config = configs[i];

// Don't need the config list anymore so free it.

XFree(configs);

configs = NULL;

pbuffer_list[0] = GLX_PBUFFER_WIDTH;

pbuffer_list[1] = gWidth;

pbuffer_list[2] = GLX_PBUFFER_HEIGHT;

pbuffer_list[3] = gHeight;

pbuffer_list[4] = None;

// Create pbuffer

pbuffer = glXCreatePbuffer(dpy, config, pbuffer_list);

// Create rendering context for GLX_RGBA_FLOAT_TYPE_ARB pbuffer.

context = glXCreateNewContext(dpy, config,

GLX_RGBA_FLOAT_TYPE_ARB, 0, True);





Note: Checking the proper color depth of the chosen FBConfig is required as

glXChooseFBConfig in recent Linux drivers returns deeper FBConfigs at the

beginning of the resulting list. As a result 32-bit FBConfigs appear earlier in the list

than FP16 or 8-bit integer configs. The change was made to bring the behavior of

glXChooseFBConfig inline with the specification.

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SDI Technologies iH30 Especificações Página 26