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renderer,config: add custom DRM modeline support (#2254)

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This allows specifying custom display resolutions for the DRM backend.
This is useful for display overclocking, working around broken EDIDs,
etc. To use this feature, specify a modeline instead of a resolution
in the config, for example:

    monitor = DP-1, modeline 1071.101 3840 3848 3880 3920 2160 2263 2271 2277 +hsync -vsync, 0x0, 1

This example is a custom 3840x2160@120Hz mode with tightened timings.
I use it because the standard timings don't work with my monitor and GPU
combination (M28U with RX580).

The syntax is compatible with Sway and Xorg.
This commit is contained in:
Andrei Alexeyev 2023-05-09 15:01:45 +02:00 • committed by GitHub
parent e7c2ea9724
commit 2f87e4c2f3
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 103 additions and 18 deletions
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25
src/helpers/Monitor.hpp
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@ -6,6 +6,7 @@
#include <vector>
#include <array>
#include <memory>
#include <xf86drmMode.h>
#include "Timer.hpp"
struct SMonitorRule;
@ -15,21 +16,23 @@ class CMonitor {
CMonitor();
~CMonitor();
Vector2D vecPosition = Vector2D(-1, -1); // means unset
Vector2D vecSize = Vector2D(0, 0);
Vector2D vecPixelSize = Vector2D(0, 0);
Vector2D vecTransformedSize = Vector2D(0, 0);
Vector2D vecPosition = Vector2D(-1, -1); // means unset
Vector2D vecSize = Vector2D(0, 0);
Vector2D vecPixelSize = Vector2D(0, 0);
Vector2D vecTransformedSize = Vector2D(0, 0);
bool primary = false;
bool primary = false;
uint64_t ID = -1;
int activeWorkspace = -1;
float scale = 1;
uint64_t ID = -1;
int activeWorkspace = -1;
float scale = 1;
std::string szName = "";
std::string szName = "";
Vector2D vecReservedTopLeft = Vector2D(0, 0);
Vector2D vecReservedBottomRight = Vector2D(0, 0);
Vector2D vecReservedTopLeft = Vector2D(0, 0);
Vector2D vecReservedBottomRight = Vector2D(0, 0);
drmModeModeInfo customDrmMode = {};
// WLR stuff
wlr_damage_ring damage;