void _glfwPlatformGetVideoMode(_GLFWmonitor* monitor, GLFWvidmode* mode)
{
if (_glfw.x11.randr.available)
{
XRRScreenResources* sr;
XRRCrtcInfo* ci;
sr = XRRGetScreenResources(_glfw.x11.display, _glfw.x11.root);
ci = XRRGetCrtcInfo(_glfw.x11.display, sr, monitor->x11.crtc);
mode->width = ci->width;
mode->height = ci->height;
mode->refreshRate = calculateRefreshRate(getModeInfo(sr, ci->mode));
XRRFreeCrtcInfo(ci);
XRRFreeScreenResources(sr);
}
else
{
mode->width = DisplayWidth(_glfw.x11.display, _glfw.x11.screen);
mode->height = DisplayHeight(_glfw.x11.display, _glfw.x11.screen);
mode->refreshRate = 0;
}
_glfwSplitBPP(DefaultDepth(_glfw.x11.display, _glfw.x11.screen),
&mode->redBits, &mode->greenBits, &mode->blueBits);
}
// Convert RandR mode info to GLFW video mode
//
static GLFWvidmode vidmodeFromModeInfo(const XRRModeInfo* mi)
{
GLFWvidmode mode;
mode.width = mi->width;
mode.height = mi->height;
mode.refreshRate = calculateRefreshRate(mi);
_glfwSplitBPP(DefaultDepth(_glfw.x11.display, _glfw.x11.screen),
&mode.redBits, &mode.greenBits, &mode.blueBits);
return mode;
}
// Set the current video mode for the specified monitor
//
void _glfwSetVideoMode(_GLFWmonitor* monitor, const GLFWvidmode* desired)
{
if (_glfw.x11.randr.available)
{
int i;
XRRScreenResources* sr;
XRRCrtcInfo* ci;
RRMode bestMode = 0;
unsigned int leastSizeDiff = UINT_MAX, leastRateDiff = UINT_MAX;
sr = XRRGetScreenResources(_glfw.x11.display, _glfw.x11.root);
ci = XRRGetCrtcInfo(_glfw.x11.display, sr, monitor->x11.crtc);
for (i = 0; i < sr->nmode; i++)
{
XRRModeInfo* mi = sr->modes + i;
if (mi->modeFlags & RR_Interlace)
continue;
const unsigned int sizeDiff = (mi->width - desired->width) *
(mi->width - desired->width) +
(mi->height - desired->height) *
(mi->height - desired->height);
const unsigned int rateDiff = abs(calculateRefreshRate(mi) - desired->refreshRate);
if ((sizeDiff < leastSizeDiff) ||
(sizeDiff == leastSizeDiff && rateDiff < leastRateDiff))
{
bestMode = mi->id;
leastSizeDiff = sizeDiff;
leastRateDiff = rateDiff;
}
}
monitor->x11.oldMode = ci->mode;
XRRSetCrtcConfig(_glfw.x11.display,
sr, monitor->x11.crtc,
CurrentTime,
ci->x, ci->y,
bestMode,
ci->rotation,
ci->outputs,
ci->noutput);
XRRFreeCrtcInfo(ci);
XRRFreeScreenResources(sr);
}
}
// Convert RandR mode info to GLFW video mode
//
static GLFWvidmode vidmodeFromModeInfo(const XRRModeInfo* mi,
const XRRCrtcInfo* ci)
{
GLFWvidmode mode;
if (ci->rotation == RR_Rotate_90 || ci->rotation == RR_Rotate_270)
{
mode.width = mi->height;
mode.height = mi->width;
}
else
{
mode.width = mi->width;
mode.height = mi->height;
}
mode.refreshRate = calculateRefreshRate(mi);
_glfwSplitBPP(DefaultDepth(_glfw.x11.display, _glfw.x11.screen),
&mode.redBits, &mode.greenBits, &mode.blueBits);
return mode;
}
GLFWvidmode* _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, int* found)
{
GLFWvidmode* result;
int depth, r, g, b;
depth = DefaultDepth(_glfw.x11.display, _glfw.x11.screen);
_glfwSplitBPP(depth, &r, &g, &b);
*found = 0;
// Build array of available resolutions
if (_glfw.x11.randr.available)
{
int i, j;
XRRScreenResources* sr;
XRROutputInfo* oi;
sr = XRRGetScreenResources(_glfw.x11.display, _glfw.x11.root);
oi = XRRGetOutputInfo(_glfw.x11.display, sr, monitor->x11.output);
result = calloc(oi->nmode, sizeof(GLFWvidmode));
for (i = 0; i < oi->nmode; i++)
{
GLFWvidmode mode;
const XRRModeInfo* mi = getModeInfo(sr, oi->modes[i]);
mode.width = mi->width;
mode.height = mi->height;
mode.refreshRate = calculateRefreshRate(mi);
for (j = 0; j < *found; j++)
{
if (result[j].width == mode.width &&
result[j].height == mode.height &&
result[j].refreshRate == mode.refreshRate)
{
break;
}
}
if (j < *found)
{
// This is a duplicate, so skip it
continue;
}
mode.redBits = r;
mode.greenBits = g;
mode.blueBits = b;
result[*found] = mode;
(*found)++;
}
XRRFreeOutputInfo(oi);
XRRFreeScreenResources(sr);
}
else
{
*found = 1;
result = calloc(1, sizeof(GLFWvidmode));
result[0].width = DisplayWidth(_glfw.x11.display, _glfw.x11.screen);
result[0].height = DisplayHeight(_glfw.x11.display, _glfw.x11.screen);
result[0].redBits = r;
result[0].greenBits = g;
result[0].blueBits = b;
result[0].refreshRate = 0;
}
return result;
}
