drm: sort modes
This allows the best mode to be selected even if a constraint is specified (such as the width or height).
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parent
a3144601c3
commit
127b1b510e
2 changed files with 19 additions and 21 deletions
34
src/drm.cpp
34
src/drm.cpp
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@ -23,6 +23,7 @@ extern "C" {
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#include "gpuvis_trace_utils.h"
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#include <algorithm>
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#include <thread>
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struct drm_t g_DRM = {};
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@ -365,26 +366,19 @@ static const drmModeModeInfo *get_matching_mode( const drmModeConnector *connect
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return NULL;
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}
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static const drmModeModeInfo *get_preferred_mode( const drmModeConnector *connector )
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static bool compare_modes( drmModeModeInfo mode1, drmModeModeInfo mode2 )
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{
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/* find preferred mode or the highest resolution mode */
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int highest_area = 0;
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const drmModeModeInfo *highest_mode = NULL;
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for (int i = 0; i < connector->count_modes; i++) {
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const drmModeModeInfo *mode = &connector->modes[i];
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if (mode1.type & DRM_MODE_TYPE_PREFERRED)
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return true;
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if (mode2.type & DRM_MODE_TYPE_PREFERRED)
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return false;
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if (mode->type & DRM_MODE_TYPE_PREFERRED) {
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return mode;
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}
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int area1 = mode1.hdisplay * mode1.vdisplay;
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int area2 = mode2.hdisplay * mode2.vdisplay;
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if (area1 != area2)
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return area1 > area2;
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int area = mode->hdisplay * mode->vdisplay;
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if (area > highest_area) {
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highest_mode = mode;
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highest_area = area;
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}
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}
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return highest_mode;
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return mode1.vrefresh > mode2.vrefresh;
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}
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int init_drm(struct drm_t *drm, const char *device)
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@ -432,13 +426,17 @@ int init_drm(struct drm_t *drm, const char *device)
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return -1;
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}
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/* sort modes by preference: preferred flag, then highest area, then
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* highest refresh rate */
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std::stable_sort(connector->modes, connector->modes + connector->count_modes, compare_modes);
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if ( g_nOutputWidth != 0 || g_nOutputHeight != 0 || g_nNestedRefresh != 0 )
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{
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drm->mode = get_matching_mode(connector, g_nOutputWidth, g_nOutputHeight, g_nNestedRefresh);
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}
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if (!drm->mode) {
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drm->mode = get_preferred_mode(connector);
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drm->mode = get_matching_mode(connector, 0, 0, 0);
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}
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if (!drm->mode) {
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@ -12,12 +12,12 @@ void wayland_commit(struct wlr_surface *surf, struct wlr_buffer *buf);
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extern int g_nNestedWidth;
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extern int g_nNestedHeight;
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extern int g_nNestedRefresh;
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extern int g_nNestedUnfocusedRefresh;
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extern int g_nNestedRefresh; // Hz
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extern int g_nNestedUnfocusedRefresh; // Hz
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extern uint32_t g_nOutputWidth;
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extern uint32_t g_nOutputHeight;
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extern int g_nOutputRefresh;
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extern int g_nOutputRefresh; // Hz
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extern bool g_bFullscreen;
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