C++ (Cpp) _glfwAllocGammaRamp Examples

Example #1

File: win32_gamma.c Project: Cloudef/glfw

void _glfwPlatformGetGammaRamp(_GLFWmonitor* monitor, GLFWgammaramp* ramp)
{
    HDC dc;
    WORD values[768];
    DISPLAY_DEVICE display;

    ZeroMemory(&display, sizeof(DISPLAY_DEVICE));
    display.cb = sizeof(DISPLAY_DEVICE);
    EnumDisplayDevices(monitor->win32.name, 0, &display, 0);

    dc = CreateDC(L"DISPLAY", display.DeviceString, NULL, NULL);
    GetDeviceGammaRamp(dc, values);
    DeleteDC(dc);

    _glfwAllocGammaRamp(ramp, 256);

    memcpy(ramp->red,   values +   0, 256 * sizeof(unsigned short));
    memcpy(ramp->green, values + 256, 256 * sizeof(unsigned short));
    memcpy(ramp->blue,  values + 512, 256 * sizeof(unsigned short));
}

Example #2

File: cocoa_gamma.c Project: jackpoz/G3D-backup

void _glfwPlatformGetGammaRamp(_GLFWmonitor* monitor, GLFWgammaramp* ramp)
{
    uint32_t i, size = CGDisplayGammaTableCapacity(monitor->ns.displayID);
    CGGammaValue* values = (CGGammaValue*) malloc(size * 3 * sizeof(CGGammaValue));

    CGGetDisplayTransferByTable(monitor->ns.displayID,
                                size,
                                values,
                                values + size,
                                values + size * 2,
                                &size);

    _glfwAllocGammaRamp(ramp, size);

    for (i = 0; i < size; i++)
    {
        ramp->red[i]   = (unsigned short) (values[i] * 65535);
        ramp->green[i] = (unsigned short) (values[i + size] * 65535);
        ramp->blue[i]  = (unsigned short) (values[i + size * 2] * 65535);
    }

    free(values);
}