mirror of
https://github.com/glfw/glfw.git
synced 2024-11-27 04:22:00 +00:00
535 lines
16 KiB
C
535 lines
16 KiB
C
//========================================================================
|
|
// GLFW - An OpenGL library
|
|
// Platform: X11/GLX
|
|
// API version: 3.0
|
|
// WWW: http://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>
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW internal API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
//========================================================================
|
|
// Finds the video mode closest in size to the specified desired size
|
|
//========================================================================
|
|
|
|
int _glfwGetClosestVideoMode(int* width, int* height, int* rate)
|
|
{
|
|
int i, match, bestmatch;
|
|
|
|
if (_glfwLibrary.X11.RandR.available)
|
|
{
|
|
#if defined(_GLFW_HAS_XRANDR)
|
|
int sizecount, bestsize;
|
|
int ratecount, bestrate;
|
|
short* ratelist;
|
|
XRRScreenConfiguration* sc;
|
|
XRRScreenSize* sizelist;
|
|
|
|
sc = XRRGetScreenInfo(_glfwLibrary.X11.display, _glfwLibrary.X11.root);
|
|
|
|
sizelist = XRRConfigSizes(sc, &sizecount);
|
|
|
|
// Find the best matching mode
|
|
bestsize = -1;
|
|
bestmatch = INT_MAX;
|
|
for (i = 0; i < sizecount; i++)
|
|
{
|
|
match = (*width - sizelist[i].width) *
|
|
(*width - sizelist[i].width) +
|
|
(*height - sizelist[i].height) *
|
|
(*height - sizelist[i].height);
|
|
if (match < bestmatch)
|
|
{
|
|
bestmatch = match;
|
|
bestsize = i;
|
|
}
|
|
}
|
|
|
|
if (bestsize != -1)
|
|
{
|
|
// Report width & height of best matching mode
|
|
*width = sizelist[bestsize].width;
|
|
*height = sizelist[bestsize].height;
|
|
|
|
if (*rate > 0)
|
|
{
|
|
ratelist = XRRConfigRates(sc, bestsize, &ratecount);
|
|
|
|
bestrate = -1;
|
|
bestmatch = INT_MAX;
|
|
for (i = 0; i < ratecount; i++)
|
|
{
|
|
match = abs(ratelist[i] - *rate);
|
|
if (match < bestmatch)
|
|
{
|
|
bestmatch = match;
|
|
bestrate = ratelist[i];
|
|
}
|
|
}
|
|
|
|
if (bestrate != -1)
|
|
*rate = bestrate;
|
|
}
|
|
}
|
|
|
|
XRRFreeScreenConfigInfo(sc);
|
|
|
|
if (bestsize != -1)
|
|
return bestsize;
|
|
#endif /*_GLFW_HAS_XRANDR*/
|
|
}
|
|
else if (_glfwLibrary.X11.VidMode.available)
|
|
{
|
|
#if defined(_GLFW_HAS_XF86VIDMODE)
|
|
XF86VidModeModeInfo** modelist;
|
|
int bestmode, modecount;
|
|
|
|
// Get a list of all available display modes
|
|
XF86VidModeGetAllModeLines(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
&modecount, &modelist);
|
|
|
|
// Find the best matching mode
|
|
bestmode = -1;
|
|
bestmatch = INT_MAX;
|
|
for (i = 0; i < modecount; i++)
|
|
{
|
|
match = (*width - modelist[i]->hdisplay) *
|
|
(*width - modelist[i]->hdisplay) +
|
|
(*height - modelist[i]->vdisplay) *
|
|
(*height - modelist[i]->vdisplay);
|
|
if (match < bestmatch)
|
|
{
|
|
bestmatch = match;
|
|
bestmode = i;
|
|
}
|
|
}
|
|
|
|
if (bestmode != -1)
|
|
{
|
|
// Report width & height of best matching mode
|
|
*width = modelist[bestmode]->hdisplay;
|
|
*height = modelist[bestmode]->vdisplay;
|
|
}
|
|
|
|
XFree(modelist);
|
|
|
|
if (bestmode != -1)
|
|
return bestmode;
|
|
#endif /*_GLFW_HAS_XF86VIDMODE*/
|
|
}
|
|
|
|
// Default: Simply use the screen resolution
|
|
*width = DisplayWidth(_glfwLibrary.X11.display, _glfwLibrary.X11.screen);
|
|
*height = DisplayHeight(_glfwLibrary.X11.display, _glfwLibrary.X11.screen);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Change the current video mode
|
|
//========================================================================
|
|
|
|
void _glfwSetVideoModeMODE(int mode, int rate)
|
|
{
|
|
if (_glfwLibrary.X11.RandR.available)
|
|
{
|
|
#if defined(_GLFW_HAS_XRANDR)
|
|
XRRScreenConfiguration* sc;
|
|
Window root;
|
|
|
|
root = _glfwLibrary.X11.root;
|
|
sc = XRRGetScreenInfo(_glfwLibrary.X11.display, root);
|
|
|
|
// Remember old size and flag that we have changed the mode
|
|
if (!_glfwLibrary.X11.FS.modeChanged)
|
|
{
|
|
_glfwLibrary.X11.FS.oldSizeID = XRRConfigCurrentConfiguration(sc, &_glfwLibrary.X11.FS.oldRotation);
|
|
_glfwLibrary.X11.FS.oldWidth = DisplayWidth(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen);
|
|
_glfwLibrary.X11.FS.oldHeight = DisplayHeight(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen);
|
|
|
|
_glfwLibrary.X11.FS.modeChanged = GL_TRUE;
|
|
}
|
|
|
|
if (rate > 0)
|
|
{
|
|
// Set desired configuration
|
|
XRRSetScreenConfigAndRate(_glfwLibrary.X11.display,
|
|
sc,
|
|
root,
|
|
mode,
|
|
RR_Rotate_0,
|
|
(short) rate,
|
|
CurrentTime);
|
|
}
|
|
else
|
|
{
|
|
// Set desired configuration
|
|
XRRSetScreenConfig(_glfwLibrary.X11.display,
|
|
sc,
|
|
root,
|
|
mode,
|
|
RR_Rotate_0,
|
|
CurrentTime);
|
|
}
|
|
|
|
XRRFreeScreenConfigInfo(sc);
|
|
#endif /*_GLFW_HAS_XRANDR*/
|
|
}
|
|
else if (_glfwLibrary.X11.VidMode.available)
|
|
{
|
|
#if defined(_GLFW_HAS_XF86VIDMODE)
|
|
XF86VidModeModeInfo **modelist;
|
|
int modecount;
|
|
|
|
// Get a list of all available display modes
|
|
XF86VidModeGetAllModeLines(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
&modecount, &modelist);
|
|
|
|
// Unlock mode switch if necessary
|
|
if (_glfwLibrary.X11.FS.modeChanged)
|
|
{
|
|
XF86VidModeLockModeSwitch(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
0);
|
|
}
|
|
|
|
// Change the video mode to the desired mode
|
|
XF86VidModeSwitchToMode(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
modelist[mode]);
|
|
|
|
// Set viewport to upper left corner (where our window will be)
|
|
XF86VidModeSetViewPort(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
0, 0);
|
|
|
|
// Lock mode switch
|
|
XF86VidModeLockModeSwitch(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
1);
|
|
|
|
// Remember old mode and flag that we have changed the mode
|
|
if (!_glfwLibrary.X11.FS.modeChanged)
|
|
{
|
|
_glfwLibrary.X11.FS.oldMode = *modelist[0];
|
|
_glfwLibrary.X11.FS.modeChanged = GL_TRUE;
|
|
}
|
|
|
|
XFree(modelist);
|
|
#endif /*_GLFW_HAS_XF86VIDMODE*/
|
|
}
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Change the current video mode
|
|
//========================================================================
|
|
|
|
void _glfwSetVideoMode(int* width, int* height, int* rate)
|
|
{
|
|
int bestmode;
|
|
|
|
// Find a best match mode
|
|
bestmode = _glfwGetClosestVideoMode(width, height, rate);
|
|
|
|
// Change mode
|
|
_glfwSetVideoModeMODE(bestmode, *rate);
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Restore the previously saved (original) video mode
|
|
//========================================================================
|
|
|
|
void _glfwRestoreVideoMode(void)
|
|
{
|
|
if (_glfwLibrary.X11.FS.modeChanged)
|
|
{
|
|
if (_glfwLibrary.X11.RandR.available)
|
|
{
|
|
#if defined(_GLFW_HAS_XRANDR)
|
|
XRRScreenConfiguration* sc;
|
|
|
|
if (_glfwLibrary.X11.RandR.available)
|
|
{
|
|
sc = XRRGetScreenInfo(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.root);
|
|
|
|
XRRSetScreenConfig(_glfwLibrary.X11.display,
|
|
sc,
|
|
_glfwLibrary.X11.root,
|
|
_glfwLibrary.X11.FS.oldSizeID,
|
|
_glfwLibrary.X11.FS.oldRotation,
|
|
CurrentTime);
|
|
|
|
XRRFreeScreenConfigInfo(sc);
|
|
}
|
|
#endif /*_GLFW_HAS_XRANDR*/
|
|
}
|
|
else if (_glfwLibrary.X11.VidMode.available)
|
|
{
|
|
#if defined(_GLFW_HAS_XF86VIDMODE)
|
|
// Unlock mode switch
|
|
XF86VidModeLockModeSwitch(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
0);
|
|
|
|
// Change the video mode back to the old mode
|
|
XF86VidModeSwitchToMode(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
&_glfwLibrary.X11.FS.oldMode);
|
|
#endif /*_GLFW_HAS_XF86VIDMODE*/
|
|
}
|
|
|
|
_glfwLibrary.X11.FS.modeChanged = GL_FALSE;
|
|
}
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW platform API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
typedef struct
|
|
{
|
|
int width;
|
|
int height;
|
|
} _GLFWvidsize;
|
|
|
|
|
|
//========================================================================
|
|
// List available video modes
|
|
//========================================================================
|
|
|
|
GLFWvidmode* _glfwPlatformGetVideoModes(int* found)
|
|
{
|
|
XVisualInfo* visuals;
|
|
XVisualInfo dummy;
|
|
int i, j, visualCount, sizeCount, rgbCount;
|
|
int* rgbs;
|
|
_GLFWvidsize* sizes;
|
|
GLFWvidmode* result;
|
|
|
|
visuals = XGetVisualInfo(_glfwLibrary.X11.display, 0, &dummy, &visualCount);
|
|
if (visuals == NULL)
|
|
{
|
|
_glfwSetError(GLFW_PLATFORM_ERROR,
|
|
"X11/GLX: Failed to retrieve the available visuals");
|
|
return 0;
|
|
}
|
|
|
|
// Build array of available RGB channel depths
|
|
|
|
rgbs = (int*) malloc(sizeof(int) * visualCount);
|
|
rgbCount = 0;
|
|
|
|
for (i = 0; i < visualCount; i++)
|
|
{
|
|
int gl, rgba, rgb, r, g, b;
|
|
|
|
glXGetConfig(_glfwLibrary.X11.display, &visuals[i], GLX_USE_GL, &gl);
|
|
glXGetConfig(_glfwLibrary.X11.display, &visuals[i], GLX_RGBA, &rgba);
|
|
|
|
if (!gl || !rgba)
|
|
{
|
|
// The visual lacks OpenGL or true color, so skip it
|
|
continue;
|
|
}
|
|
|
|
// Convert to RGB channel depths and encode
|
|
_glfwSplitBPP(visuals[i].depth, &r, &g, &b);
|
|
rgb = (r << 16) | (g << 8) | b;
|
|
|
|
for (j = 0; j < rgbCount; j++)
|
|
{
|
|
if (rgbs[j] == rgb)
|
|
break;
|
|
}
|
|
|
|
if (j < rgbCount)
|
|
{
|
|
// This channel depth is a duplicate, so skip it
|
|
continue;
|
|
}
|
|
|
|
rgbs[rgbCount] = rgb;
|
|
rgbCount++;
|
|
}
|
|
|
|
XFree(visuals);
|
|
|
|
sizeCount = 0;
|
|
sizes = NULL;
|
|
|
|
// Build array of available resolutions
|
|
|
|
if (_glfwLibrary.X11.RandR.available)
|
|
{
|
|
#if defined(_GLFW_HAS_XRANDR)
|
|
XRRScreenConfiguration* sc;
|
|
XRRScreenSize* rrSizes;
|
|
|
|
sc = XRRGetScreenInfo(_glfwLibrary.X11.display, _glfwLibrary.X11.root);
|
|
rrSizes = XRRConfigSizes(sc, &sizeCount);
|
|
|
|
sizes = (_GLFWvidsize*) malloc(sizeof(_GLFWvidsize) * sizeCount);
|
|
|
|
for (i = 0; i < sizeCount; i++)
|
|
{
|
|
sizes[i].width = rrSizes[i].width;
|
|
sizes[i].height = rrSizes[i].height;
|
|
}
|
|
|
|
XRRFreeScreenConfigInfo(sc);
|
|
#endif /*_GLFW_HAS_XRANDR*/
|
|
}
|
|
else if (_glfwLibrary.X11.VidMode.available)
|
|
{
|
|
#if defined(_GLFW_HAS_XF86VIDMODE)
|
|
XF86VidModeModeInfo** modes;
|
|
int modeCount;
|
|
|
|
XF86VidModeGetAllModeLines(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen,
|
|
&modeCount, &modes);
|
|
|
|
sizes = (_GLFWvidsize*) malloc(sizeof(_GLFWvidsize) * modeCount);
|
|
|
|
for (i = 0; i < modeCount; i++)
|
|
{
|
|
_GLFWvidsize size;
|
|
size.width = modes[i]->hdisplay;
|
|
size.height = modes[i]->vdisplay;
|
|
|
|
for (j = 0; j < sizeCount; j++)
|
|
{
|
|
if (memcmp(sizes + j, &size, sizeof(_GLFWvidsize)) == 0)
|
|
break;
|
|
}
|
|
|
|
if (j < sizeCount)
|
|
{
|
|
// This size is a duplicate, so skip it
|
|
continue;
|
|
}
|
|
|
|
sizes[sizeCount] = size;
|
|
sizeCount++;
|
|
}
|
|
|
|
XFree(modes);
|
|
#endif /*_GLFW_HAS_XF86VIDMODE*/
|
|
}
|
|
|
|
if (!sizeCount)
|
|
{
|
|
sizeCount = 1;
|
|
sizes = (_GLFWvidsize*) malloc(sizeof(_GLFWvidsize));
|
|
|
|
sizes[0].width = DisplayWidth(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen);
|
|
sizes[0].height = DisplayHeight(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen);
|
|
}
|
|
|
|
// Build all permutations of channel depths and resolutions
|
|
|
|
result = (GLFWvidmode*) malloc(sizeof(GLFWvidmode) * rgbCount * sizeCount);
|
|
*found = 0;
|
|
|
|
for (i = 0; i < rgbCount; i++)
|
|
{
|
|
for (j = 0; j < sizeCount; j++)
|
|
{
|
|
result[*found].width = sizes[j].width;
|
|
result[*found].height = sizes[j].height;
|
|
result[*found].redBits = (rgbs[i] >> 16) & 255;
|
|
result[*found].greenBits = (rgbs[i] >> 8) & 255;
|
|
result[*found].blueBits = rgbs[i] & 255;
|
|
|
|
(*found)++;
|
|
}
|
|
}
|
|
|
|
free(sizes);
|
|
free(rgbs);
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
// Get the desktop video mode
|
|
//========================================================================
|
|
|
|
void _glfwPlatformGetDesktopMode(GLFWvidmode* mode)
|
|
{
|
|
int bpp;
|
|
|
|
// Get and split display depth
|
|
bpp = DefaultDepth(_glfwLibrary.X11.display, _glfwLibrary.X11.screen);
|
|
_glfwSplitBPP(bpp, &mode->redBits, &mode->greenBits, &mode->blueBits);
|
|
|
|
if (_glfwLibrary.X11.FS.modeChanged)
|
|
{
|
|
if (_glfwLibrary.X11.RandR.available)
|
|
{
|
|
#if defined(_GLFW_HAS_XRANDR)
|
|
mode->width = _glfwLibrary.X11.FS.oldWidth;
|
|
mode->height = _glfwLibrary.X11.FS.oldHeight;
|
|
#endif /*_GLFW_HAS_XRANDR*/
|
|
}
|
|
else if (_glfwLibrary.X11.VidMode.available)
|
|
{
|
|
#if defined(_GLFW_HAS_XF86VIDMODE)
|
|
mode->width = _glfwLibrary.X11.FS.oldMode.hdisplay;
|
|
mode->height = _glfwLibrary.X11.FS.oldMode.vdisplay;
|
|
#endif /*_GLFW_HAS_XF86VIDMODE*/
|
|
}
|
|
}
|
|
else
|
|
{
|
|
mode->width = DisplayWidth(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen);
|
|
mode->height = DisplayHeight(_glfwLibrary.X11.display,
|
|
_glfwLibrary.X11.screen);
|
|
}
|
|
}
|
|
|