Nyaaori/gamescope
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drm: sort modes

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This allows the best mode to be selected even if a constraint is
specified (such as the width or height).
This commit is contained in:
Simon Ser 2021-07-20 16:58:12 +02:00
parent a3144601c3
commit 127b1b510e
2 changed files with 19 additions and 21 deletions
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34
src/drm.cpp
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@ -23,6 +23,7 @@ extern "C" {
#include "gpuvis_trace_utils.h"
#include <algorithm>
#include <thread>
struct drm_t g_DRM = {};
@ -365,26 +366,19 @@ static const drmModeModeInfo *get_matching_mode( const drmModeConnector *connect
return NULL;
}
static const drmModeModeInfo *get_preferred_mode( const drmModeConnector *connector )
static bool compare_modes( drmModeModeInfo mode1, drmModeModeInfo mode2 )
{
/* find preferred mode or the highest resolution mode */
int highest_area = 0;
const drmModeModeInfo *highest_mode = NULL;
for (int i = 0; i < connector->count_modes; i++) {
const drmModeModeInfo *mode = &connector->modes[i];
if (mode1.type & DRM_MODE_TYPE_PREFERRED)
return true;
if (mode2.type & DRM_MODE_TYPE_PREFERRED)
return false;
if (mode->type & DRM_MODE_TYPE_PREFERRED) {
return mode;
}
int area1 = mode1.hdisplay * mode1.vdisplay;
int area2 = mode2.hdisplay * mode2.vdisplay;
if (area1 != area2)
return area1 > area2;
int area = mode->hdisplay * mode->vdisplay;
if (area > highest_area) {
highest_mode = mode;
highest_area = area;
}
}
return highest_mode;
return mode1.vrefresh > mode2.vrefresh;
}
int init_drm(struct drm_t *drm, const char *device)
@ -432,13 +426,17 @@ int init_drm(struct drm_t *drm, const char *device)
return -1;
}
/* sort modes by preference: preferred flag, then highest area, then
* highest refresh rate */
std::stable_sort(connector->modes, connector->modes + connector->count_modes, compare_modes);
if ( g_nOutputWidth != 0 || g_nOutputHeight != 0 || g_nNestedRefresh != 0 )
{
drm->mode = get_matching_mode(connector, g_nOutputWidth, g_nOutputHeight, g_nNestedRefresh);
}
if (!drm->mode) {
drm->mode = get_preferred_mode(connector);
drm->mode = get_matching_mode(connector, 0, 0, 0);
}
if (!drm->mode) {

6
src/main.hpp
View file

@ -12,12 +12,12 @@ void wayland_commit(struct wlr_surface *surf, struct wlr_buffer *buf);
extern int g_nNestedWidth;
extern int g_nNestedHeight;
extern int g_nNestedRefresh;
extern int g_nNestedUnfocusedRefresh;
extern int g_nNestedRefresh; // Hz
extern int g_nNestedUnfocusedRefresh; // Hz
extern uint32_t g_nOutputWidth;
extern uint32_t g_nOutputHeight;
extern int g_nOutputRefresh;
extern int g_nOutputRefresh; // Hz
extern bool g_bFullscreen;