mirror of
https://github.com/gwm17/glfw.git
synced 2024-11-26 20:28:49 -05:00
402 lines
11 KiB
C
402 lines
11 KiB
C
//========================================================================
|
|
// GLFW 3.0 X11 - www.glfw.org
|
|
//------------------------------------------------------------------------
|
|
// Copyright (c) 2002-2006 Marcus Geelnard
|
|
// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
|
|
//
|
|
// This software is provided 'as-is', without any express or implied
|
|
// warranty. In no event will the authors be held liable for any damages
|
|
// arising from the use of this software.
|
|
//
|
|
// Permission is granted to anyone to use this software for any purpose,
|
|
// including commercial applications, and to alter it and redistribute it
|
|
// freely, subject to the following restrictions:
|
|
//
|
|
// 1. The origin of this software must not be misrepresented; you must not
|
|
// claim that you wrote the original software. If you use this software
|
|
// in a product, an acknowledgment in the product documentation would
|
|
// be appreciated but is not required.
|
|
//
|
|
// 2. Altered source versions must be plainly marked as such, and must not
|
|
// be misrepresented as being the original software.
|
|
//
|
|
// 3. This notice may not be removed or altered from any source
|
|
// distribution.
|
|
//
|
|
//========================================================================
|
|
|
|
#include "internal.h"
|
|
|
|
#include <limits.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
|
|
static int calculateRefreshRate(const XRRModeInfo* mi)
|
|
{
|
|
if (!mi->hTotal || !mi->vTotal)
|
|
return 0;
|
|
|
|
return (int) ((double) mi->dotClock / ((double) mi->hTotal * (double) mi->vTotal));
|
|
}
|
|
|
|
static const XRRModeInfo* getModeInfo(const XRRScreenResources* sr, RRMode id)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < sr->nmode; i++)
|
|
{
|
|
if (sr->modes[i].id == id)
|
|
return sr->modes + i;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW internal API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
// Set the current video mode for the specified monitor
|
|
//
|
|
void _glfwSetVideoMode(_GLFWmonitor* monitor, const GLFWvidmode* desired)
|
|
{
|
|
if (_glfw.x11.randr.available)
|
|
{
|
|
int i, j;
|
|
XRRScreenResources* sr;
|
|
XRRCrtcInfo* ci;
|
|
XRROutputInfo* oi;
|
|
RRMode bestMode = 0;
|
|
unsigned int sizeDiff, leastSizeDiff = UINT_MAX;
|
|
unsigned int rateDiff, leastRateDiff = UINT_MAX;
|
|
|
|
sr = XRRGetScreenResources(_glfw.x11.display, _glfw.x11.root);
|
|
ci = XRRGetCrtcInfo(_glfw.x11.display, sr, monitor->x11.crtc);
|
|
oi = XRRGetOutputInfo(_glfw.x11.display, sr, monitor->x11.output);
|
|
|
|
for (i = 0; i < sr->nmode; i++)
|
|
{
|
|
const XRRModeInfo* mi = sr->modes + i;
|
|
|
|
if (mi->modeFlags & RR_Interlace)
|
|
continue;
|
|
|
|
for (j = 0; j < oi->nmode; j++)
|
|
{
|
|
if (oi->modes[j] == mi->id)
|
|
break;
|
|
}
|
|
|
|
if (j == oi->nmode)
|
|
continue;
|
|
|
|
sizeDiff = (mi->width - desired->width) *
|
|
(mi->width - desired->width) +
|
|
(mi->height - desired->height) *
|
|
(mi->height - desired->height);
|
|
|
|
if (desired->refreshRate)
|
|
rateDiff = abs(calculateRefreshRate(mi) - desired->refreshRate);
|
|
else
|
|
rateDiff = UINT_MAX - calculateRefreshRate(mi);
|
|
|
|
if ((sizeDiff < leastSizeDiff) ||
|
|
(sizeDiff == leastSizeDiff && rateDiff < leastRateDiff))
|
|
{
|
|
bestMode = mi->id;
|
|
leastSizeDiff = sizeDiff;
|
|
leastRateDiff = rateDiff;
|
|
}
|
|
}
|
|
|
|
if (monitor->x11.oldMode == None)
|
|
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);
|
|
|
|
XRRFreeOutputInfo(oi);
|
|
XRRFreeCrtcInfo(ci);
|
|
XRRFreeScreenResources(sr);
|
|
}
|
|
}
|
|
|
|
// Restore the saved (original) video mode for the specified monitor
|
|
//
|
|
void _glfwRestoreVideoMode(_GLFWmonitor* monitor)
|
|
{
|
|
if (_glfw.x11.randr.available)
|
|
{
|
|
XRRScreenResources* sr;
|
|
XRRCrtcInfo* ci;
|
|
|
|
if (monitor->x11.oldMode == None)
|
|
return;
|
|
|
|
sr = XRRGetScreenResources(_glfw.x11.display, _glfw.x11.root);
|
|
ci = XRRGetCrtcInfo(_glfw.x11.display, sr, monitor->x11.crtc);
|
|
|
|
XRRSetCrtcConfig(_glfw.x11.display,
|
|
sr, monitor->x11.crtc,
|
|
CurrentTime,
|
|
ci->x, ci->y,
|
|
monitor->x11.oldMode,
|
|
ci->rotation,
|
|
ci->outputs,
|
|
ci->noutput);
|
|
|
|
XRRFreeCrtcInfo(ci);
|
|
XRRFreeScreenResources(sr);
|
|
|
|
monitor->x11.oldMode = None;
|
|
}
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW platform API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
_GLFWmonitor** _glfwPlatformGetMonitors(int* count)
|
|
{
|
|
_GLFWmonitor** monitors = NULL;
|
|
|
|
*count = 0;
|
|
|
|
if (_glfw.x11.randr.available)
|
|
{
|
|
int i, found = 0;
|
|
RROutput primary;
|
|
XRRScreenResources* sr;
|
|
|
|
sr = XRRGetScreenResources(_glfw.x11.display, _glfw.x11.root);
|
|
primary = XRRGetOutputPrimary(_glfw.x11.display, _glfw.x11.root);
|
|
|
|
monitors = calloc(sr->ncrtc, sizeof(_GLFWmonitor*));
|
|
|
|
for (i = 0; i < sr->ncrtc; i++)
|
|
{
|
|
int j;
|
|
XRROutputInfo* oi;
|
|
XRRCrtcInfo* ci;
|
|
RROutput output;
|
|
|
|
ci = XRRGetCrtcInfo(_glfw.x11.display, sr, sr->crtcs[i]);
|
|
if (ci->noutput == 0)
|
|
{
|
|
XRRFreeCrtcInfo(ci);
|
|
continue;
|
|
}
|
|
|
|
output = ci->outputs[0];
|
|
|
|
for (j = 0; j < ci->noutput; j++)
|
|
{
|
|
if (ci->outputs[j] == primary)
|
|
{
|
|
output = primary;
|
|
break;
|
|
}
|
|
}
|
|
|
|
oi = XRRGetOutputInfo(_glfw.x11.display, sr, output);
|
|
if (oi->connection != RR_Connected)
|
|
{
|
|
XRRFreeOutputInfo(oi);
|
|
XRRFreeCrtcInfo(ci);
|
|
continue;
|
|
}
|
|
|
|
monitors[found] = _glfwCreateMonitor(oi->name,
|
|
oi->mm_width, oi->mm_height);
|
|
|
|
monitors[found]->x11.output = output;
|
|
monitors[found]->x11.crtc = oi->crtc;
|
|
|
|
XRRFreeOutputInfo(oi);
|
|
XRRFreeCrtcInfo(ci);
|
|
|
|
found++;
|
|
}
|
|
|
|
XRRFreeScreenResources(sr);
|
|
|
|
for (i = 0; i < found; i++)
|
|
{
|
|
if (monitors[i]->x11.output == primary)
|
|
{
|
|
_GLFWmonitor* temp = monitors[0];
|
|
monitors[0] = monitors[i];
|
|
monitors[i] = temp;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (found == 0)
|
|
{
|
|
free(monitors);
|
|
monitors = NULL;
|
|
}
|
|
|
|
*count = found;
|
|
}
|
|
else
|
|
{
|
|
monitors = calloc(1, sizeof(_GLFWmonitor*));
|
|
monitors[0] = _glfwCreateMonitor("Display",
|
|
DisplayWidthMM(_glfw.x11.display,
|
|
_glfw.x11.screen),
|
|
DisplayHeightMM(_glfw.x11.display,
|
|
_glfw.x11.screen));
|
|
*count = 1;
|
|
}
|
|
|
|
return monitors;
|
|
}
|
|
|
|
GLboolean _glfwPlatformIsSameMonitor(_GLFWmonitor* first, _GLFWmonitor* second)
|
|
{
|
|
return first->x11.crtc == second->x11.crtc;
|
|
}
|
|
|
|
void _glfwPlatformGetMonitorPos(_GLFWmonitor* monitor, int* xpos, int* ypos)
|
|
{
|
|
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);
|
|
|
|
if (xpos)
|
|
*xpos = ci->x;
|
|
if (ypos)
|
|
*ypos = ci->y;
|
|
|
|
XRRFreeCrtcInfo(ci);
|
|
XRRFreeScreenResources(sr);
|
|
}
|
|
else
|
|
{
|
|
if (xpos)
|
|
*xpos = 0;
|
|
if (ypos)
|
|
*ypos = 0;
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|