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FindNearestConnectorMode: prefer mode with smallest number of unused pixels (#5158)

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Co-authored-by: Philipp Maierhoefer <particle@maierhoefer.net>
This commit is contained in:
maiphi
2025-08-31 11:34:05 +02:00
committed by GitHub
parent 0d29d8d4b1
commit d9cb078299
1 changed files with 11 additions and 12 deletions
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23
src/platforms/rcore_drm.c
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@ -53,6 +53,7 @@
#include <termios.h> // POSIX terminal control definitions - tcgetattr(), tcsetattr()
#include <pthread.h> // POSIX threads management (inputs reading)
#include <dirent.h> // POSIX directory browsing
#include <limits.h> // INT_MAX
#include <sys/ioctl.h> // Required for: ioctl() - UNIX System call for device-specific input/output operations
#include <linux/kd.h> // Linux: KDSKBMODE, K_MEDIUMRAM constants definition
@ -2150,6 +2151,8 @@ static int FindNearestConnectorMode(const drmModeConnector *connector, uint widt
if (NULL == connector) return -1;
int nearestIndex = -1;
int minUnusedPixels = INT_MAX;
int minFpsDiff = INT_MAX;
for (int i = 0; i < platform.connector->count_modes; i++)
{
const drmModeModeInfo *const mode = &platform.connector->modes[i];
@ -2169,21 +2172,17 @@ static int FindNearestConnectorMode(const drmModeConnector *connector, uint widt
continue;
}
if (nearestIndex < 0)
const int unusedPixels = (mode->hdisplay - width) * (mode->vdisplay - height);
const int fpsDiff = mode->vrefresh - fps;
if ((unusedPixels < minUnusedPixels) ||
((unusedPixels == minUnusedPixels) && (abs(fpsDiff) < abs(minFpsDiff))) ||
((unusedPixels == minUnusedPixels) && (abs(fpsDiff) == abs(minFpsDiff)) && (fpsDiff > 0)))
{
nearestIndex = i;
continue;
minUnusedPixels = unusedPixels;
minFpsDiff = fpsDiff;
}
const int widthDiff = abs(mode->hdisplay - width);
const int heightDiff = abs(mode->vdisplay - height);
const int fpsDiff = abs(mode->vrefresh - fps);
const int nearestWidthDiff = abs(platform.connector->modes[nearestIndex].hdisplay - width);
const int nearestHeightDiff = abs(platform.connector->modes[nearestIndex].vdisplay - height);
const int nearestFpsDiff = abs(platform.connector->modes[nearestIndex].vrefresh - fps);
if ((widthDiff < nearestWidthDiff) || (heightDiff < nearestHeightDiff) || (fpsDiff < nearestFpsDiff)) nearestIndex = i;
}
return nearestIndex;