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X11: Add validation of RandR gamma ramp size

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This commit is contained in:
Camilla Löwy
2017-04-05 17:53:00 +02:00
parent 2226e60944
commit 66b16f1fc1
2 changed files with 8 additions and 0 deletions
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src/x11_monitor.c
+7
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@@ -453,6 +453,13 @@ void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor, const GLFWgammaramp* ramp)
{
if (_glfw.x11.randr.available && !_glfw.x11.randr.gammaBroken)
{
if (XRRGetCrtcGammaSize(_glfw.x11.display, monitor->x11.crtc) != ramp->size)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Gamma ramp size must match current ramp size");
return;
}
XRRCrtcGamma* gamma = XRRAllocGamma(ramp->size);
memcpy(gamma->red, ramp->red, ramp->size * sizeof(unsigned short));