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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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55
src/config/ConfigManager.cpp
View file

@ -470,6 +470,58 @@ void CConfigManager::handleRawExec(const std::string& command, const std::string
g_pKeybindManager->spawn(args);
}
static bool parseModeLine(const std::string& modeline, drmModeModeInfo& mode) {
auto args = CVarList(modeline, 0, 's');
auto keyword = args[0];
std::transform(keyword.begin(), keyword.end(), keyword.begin(), ::tolower);
if (keyword != "modeline")
return false;
if (args.size() < 10) {
Debug::log(ERR, "modeline parse error: expected at least 9 arguments, got %i", args.size() - 1);
return false;
}
int argno = 1;
mode.type = DRM_MODE_TYPE_USERDEF;
mode.clock = std::stof(args[argno++]) * 1000;
mode.hdisplay = std::stoi(args[argno++]);
mode.hsync_start = std::stoi(args[argno++]);
mode.hsync_end = std::stoi(args[argno++]);
mode.htotal = std::stoi(args[argno++]);
mode.vdisplay = std::stoi(args[argno++]);
mode.vsync_start = std::stoi(args[argno++]);
mode.vsync_end = std::stoi(args[argno++]);
mode.vtotal = std::stoi(args[argno++]);
mode.vrefresh = mode.clock * 1000.0 * 1000.0 / mode.htotal / mode.vtotal;
static std::unordered_map<std::string, uint32_t> flagsmap = {
{"+hsync", DRM_MODE_FLAG_PHSYNC},
{"-hsync", DRM_MODE_FLAG_NHSYNC},
{"+vsync", DRM_MODE_FLAG_PVSYNC},
{"-vsync", DRM_MODE_FLAG_NVSYNC},
};
for (; argno < static_cast<int>(args.size()); argno++) {
auto key = args[argno];
std::transform(key.begin(), key.end(), key.begin(), ::tolower);
auto it = flagsmap.find(key);
if (it != flagsmap.end())
mode.flags |= it->second;
else
Debug::log(ERR, "invalid flag %s in modeline", it->first.c_str());
}
snprintf(mode.name, sizeof(mode.name), "%dx%d@%d", mode.hdisplay, mode.vdisplay, mode.vrefresh / 1000);
return true;
}
void CConfigManager::handleMonitor(const std::string& command, const std::string& args) {
// get the monitor config
@ -531,6 +583,9 @@ void CConfigManager::handleMonitor(const std::string& command, const std::string
newrule.resolution = Vector2D(-1, -1);
} else if (ARGS[1].find("highres") == 0) {
newrule.resolution = Vector2D(-1, -2);
} else if (parseModeLine(ARGS[1], newrule.drmMode)) {
newrule.resolution = Vector2D(newrule.drmMode.hdisplay, newrule.drmMode.vdisplay);
newrule.refreshRate = newrule.drmMode.vrefresh / 1000;
} else {
newrule.resolution.x = stoi(ARGS[1].substr(0, ARGS[1].find_first_of('x')));
newrule.resolution.y = stoi(ARGS[1].substr(ARGS[1].find_first_of('x') + 1, ARGS[1].find_first_of('@')));

2
src/config/ConfigManager.hpp
View file

@ -11,6 +11,7 @@
#include <algorithm>
#include <regex>
#include <optional>
#include <xf86drmMode.h>
#include "../Window.hpp"
#include "../helpers/WLClasses.hpp"
@ -44,6 +45,7 @@ struct SMonitorRule {
wl_output_transform transform = WL_OUTPUT_TRANSFORM_NORMAL;
std::string mirrorOf = "";
bool enable10bit = false;
drmModeModeInfo drmMode = {};
};
struct SWorkspaceRule {

25
src/helpers/Monitor.hpp
View file

@ -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;

39
src/render/Renderer.cpp
View file

@ -1520,12 +1520,16 @@ bool CHyprRenderer::applyMonitorRule(CMonitor* pMonitor, SMonitorRule* pMonitorR
DELTALESSTHAN(pMonitor->refreshRate, pMonitorRule->refreshRate, 1) && pMonitor->scale == pMonitorRule->scale &&
((DELTALESSTHAN(pMonitor->vecPosition.x, pMonitorRule->offset.x, 1) && DELTALESSTHAN(pMonitor->vecPosition.y, pMonitorRule->offset.y, 1)) ||
pMonitorRule->offset == Vector2D(-1, -1)) &&
pMonitor->transform == pMonitorRule->transform && pMonitorRule->enable10bit == pMonitor->enabled10bit) {
pMonitor->transform == pMonitorRule->transform && pMonitorRule->enable10bit == pMonitor->enabled10bit &&
!memcmp(&pMonitor->customDrmMode, &pMonitorRule->drmMode, sizeof(pMonitor->customDrmMode))) {
Debug::log(LOG, "Not applying a new rule to %s because it's already applied!", pMonitor->szName.c_str());
return true;
}
// Needed in case we are switching from a custom modeline to a standard mode
pMonitor->customDrmMode = {};
if (pMonitorRule->scale > 0.1) {
wlr_output_set_scale(pMonitor->output, pMonitorRule->scale);
pMonitor->scale = pMonitorRule->scale;
@ -1540,7 +1544,7 @@ bool CHyprRenderer::applyMonitorRule(CMonitor* pMonitor, SMonitorRule* pMonitorR
// loop over modes and choose an appropriate one.
if (pMonitorRule->resolution != Vector2D() && pMonitorRule->resolution != Vector2D(-1, -1) && pMonitorRule->resolution != Vector2D(-1, -2)) {
if (!wl_list_empty(&pMonitor->output->modes)) {
if (!wl_list_empty(&pMonitor->output->modes) && pMonitorRule->drmMode.type != DRM_MODE_TYPE_USERDEF) {
wlr_output_mode* mode;
bool found = false;
@ -1599,17 +1603,37 @@ bool CHyprRenderer::applyMonitorRule(CMonitor* pMonitor, SMonitorRule* pMonitorR
}
}
} else {
wlr_output_set_custom_mode(pMonitor->output, (int)pMonitorRule->resolution.x, (int)pMonitorRule->resolution.y, (int)pMonitorRule->refreshRate * 1000);
// custom resolution
bool fail = false;
if (pMonitorRule->drmMode.type == DRM_MODE_TYPE_USERDEF) {
if (!wlr_output_is_drm(pMonitor->output)) {
Debug::log(ERR, "Tried to set custom modeline on non-DRM output");
fail = true;
} else {
auto* mode = wlr_drm_connector_add_mode(pMonitor->output, &pMonitorRule->drmMode);
if (mode) {
wlr_output_set_mode(pMonitor->output, mode);
pMonitor->customDrmMode = pMonitorRule->drmMode;
} else {
Debug::log(ERR, "wlr_drm_connector_add_mode failed");
fail = true;
}
}
} else {
wlr_output_set_custom_mode(pMonitor->output, (int)pMonitorRule->resolution.x, (int)pMonitorRule->resolution.y, (int)pMonitorRule->refreshRate * 1000);
}
pMonitor->vecSize = pMonitorRule->resolution;
pMonitor->refreshRate = pMonitorRule->refreshRate;
if (!wlr_output_test(pMonitor->output)) {
if (fail || !wlr_output_test(pMonitor->output)) {
Debug::log(ERR, "Custom resolution FAILED, falling back to preferred");
const auto PREFERREDMODE = wlr_output_preferred_mode(pMonitor->output);
if (!PREFERREDMODE) {
Debug::log(ERR, "Monitor %s has NO PREFERRED MODE, and an INVALID one was requested: %ix%i@%2f", (int)pMonitorRule->resolution.x,
Debug::log(ERR, "Monitor %s has NO PREFERRED MODE, and an INVALID one was requested: %ix%i@%2f", pMonitor->output->name, (int)pMonitorRule->resolution.x,
(int)pMonitorRule->resolution.y, (float)pMonitorRule->refreshRate);
return true;
}
@ -1621,8 +1645,9 @@ bool CHyprRenderer::applyMonitorRule(CMonitor* pMonitor, SMonitorRule* pMonitorR
(int)pMonitorRule->resolution.x, (int)pMonitorRule->resolution.y, (float)pMonitorRule->refreshRate, PREFERREDMODE->width, PREFERREDMODE->height,
PREFERREDMODE->refresh / 1000.f);
pMonitor->refreshRate = PREFERREDMODE->refresh / 1000.f;
pMonitor->vecSize = Vector2D(PREFERREDMODE->width, PREFERREDMODE->height);
pMonitor->refreshRate = PREFERREDMODE->refresh / 1000.f;
pMonitor->vecSize = Vector2D(PREFERREDMODE->width, PREFERREDMODE->height);
pMonitor->customDrmMode = {};
} else {
Debug::log(LOG, "Set a custom mode %ix%i@%2f (mode not found in monitor modes)", (int)pMonitorRule->resolution.x, (int)pMonitorRule->resolution.y,
(float)pMonitorRule->refreshRate);