From 9517d0eaa4ef93de67dc80fecca7a826f7ad556d Mon Sep 17 00:00:00 2001
From: FrancisTheCat <90558133+FrancisTheCat@users.noreply.github.com>
Date: Tue, 8 Jul 2025 19:31:15 +0200
Subject: [PATCH] renderer: Added a pointer position uniform to the screen
 shader. (#10821)

---
 CMakeLists.txt        |  2 +-
 meson.build           |  2 +-
 src/render/OpenGL.cpp | 22 +++++++++++++++++++---
 src/render/Shader.hpp |  1 +
 4 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0cfaa269a..de80e98f9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -107,7 +107,7 @@ find_package(OpenGL REQUIRED COMPONENTS ${GLES_VERSION})
 pkg_check_modules(aquamarine_dep REQUIRED IMPORTED_TARGET aquamarine>=0.9.0)
 pkg_check_modules(hyprlang_dep REQUIRED IMPORTED_TARGET hyprlang>=0.3.2)
 pkg_check_modules(hyprcursor_dep REQUIRED IMPORTED_TARGET hyprcursor>=0.1.7)
-pkg_check_modules(hyprutils_dep REQUIRED IMPORTED_TARGET hyprutils>=0.7.0)
+pkg_check_modules(hyprutils_dep REQUIRED IMPORTED_TARGET hyprutils>=0.8.1)
 pkg_check_modules(hyprgraphics_dep REQUIRED IMPORTED_TARGET hyprgraphics>=0.1.3)
 
 string(REPLACE "." ";" AQ_VERSION_LIST ${aquamarine_dep_VERSION})
diff --git a/meson.build b/meson.build
index 51cac45f7..8305eabd4 100644
--- a/meson.build
+++ b/meson.build
@@ -35,7 +35,7 @@ aquamarine = dependency('aquamarine', version: '>=0.9.0')
 hyprcursor = dependency('hyprcursor', version: '>=0.1.7')
 hyprgraphics = dependency('hyprgraphics', version: '>= 0.1.3')
 hyprlang = dependency('hyprlang', version: '>= 0.3.2')
-hyprutils = dependency('hyprutils', version: '>= 0.7.0')
+hyprutils = dependency('hyprutils', version: '>= 0.8.1')
 aquamarine_version_list = aquamarine.version().split('.')
 add_project_arguments(['-DAQUAMARINE_VERSION="@0@"'.format(aquamarine.version())], language: 'cpp')
 add_project_arguments(['-DAQUAMARINE_VERSION_MAJOR=@0@'.format(aquamarine_version_list.get(0))], language: 'cpp')
diff --git a/src/render/OpenGL.cpp b/src/render/OpenGL.cpp
index de6434859..25f5e2912 100644
--- a/src/render/OpenGL.cpp
+++ b/src/render/OpenGL.cpp
@@ -10,6 +10,7 @@
 #include "../helpers/MiscFunctions.hpp"
 #include "../config/ConfigValue.hpp"
 #include "../config/ConfigManager.hpp"
+#include "../managers/PointerManager.hpp"
 #include "../desktop/LayerSurface.hpp"
 #include "../protocols/LayerShell.hpp"
 #include "../protocols/core/Compositor.hpp"
@@ -1224,9 +1225,10 @@ void CHyprOpenGLImpl::applyScreenShader(const std::string& path) {
         return;
     }
 
-    m_finalScreenShader.uniformLocations[SHADER_PROJ] = glGetUniformLocation(m_finalScreenShader.program, "proj");
-    m_finalScreenShader.uniformLocations[SHADER_TEX]  = glGetUniformLocation(m_finalScreenShader.program, "tex");
-    m_finalScreenShader.uniformLocations[SHADER_TIME] = glGetUniformLocation(m_finalScreenShader.program, "time");
+    m_finalScreenShader.uniformLocations[SHADER_POINTER] = glGetUniformLocation(m_finalScreenShader.program, "pointer_position");
+    m_finalScreenShader.uniformLocations[SHADER_PROJ]    = glGetUniformLocation(m_finalScreenShader.program, "proj");
+    m_finalScreenShader.uniformLocations[SHADER_TEX]     = glGetUniformLocation(m_finalScreenShader.program, "tex");
+    m_finalScreenShader.uniformLocations[SHADER_TIME]    = glGetUniformLocation(m_finalScreenShader.program, "time");
     if (m_finalScreenShader.uniformLocations[SHADER_TIME] != -1)
         m_finalScreenShader.initialTime = m_globalTimer.getSeconds();
     m_finalScreenShader.uniformLocations[SHADER_WL_OUTPUT] = glGetUniformLocation(m_finalScreenShader.program, "wl_output");
@@ -1241,6 +1243,12 @@ void CHyprOpenGLImpl::applyScreenShader(const std::string& path) {
     }
     m_finalScreenShader.uniformLocations[SHADER_TEX_ATTRIB] = glGetAttribLocation(m_finalScreenShader.program, "texcoord");
     m_finalScreenShader.uniformLocations[SHADER_POS_ATTRIB] = glGetAttribLocation(m_finalScreenShader.program, "pos");
+    if (m_finalScreenShader.uniformLocations[SHADER_POINTER] != -1 && *PDT != 0 && !g_pHyprRenderer->m_crashingInProgress) {
+        // The screen shader uses the "pointer_position" uniform
+        // Since the screen shader could change every frame, damage tracking *needs* to be disabled
+        g_pConfigManager->addParseError("Screen shader: Screen shader uses uniform 'pointerPosition', which requires debug:damage_tracking to be switched off.\n"
+                                        "WARNING: Disabling damage tracking will *massively* increase GPU utilization!");
+    }
     m_finalScreenShader.createVao();
 }
 
@@ -1600,6 +1608,14 @@ void CHyprOpenGLImpl::renderTextureInternalWithDamage(SP<CTexture> tex, const CB
         shader->setUniformFloat2(SHADER_FULL_SIZE, m_renderData.pMonitor->m_pixelSize.x, m_renderData.pMonitor->m_pixelSize.y);
     }
 
+    if (usingFinalShader && *PDT == 0) {
+        PHLMONITORREF pMonitor = m_renderData.pMonitor;
+        Vector2D      p        = ((g_pInputManager->getMouseCoordsInternal() - pMonitor->m_position) * pMonitor->m_scale);
+        p                      = p.transform(wlTransformToHyprutils(pMonitor->m_transform), pMonitor->m_pixelSize);
+        shader->setUniformFloat2(SHADER_POINTER, p.x / pMonitor->m_pixelSize.x, p.y / pMonitor->m_pixelSize.y);
+    } else if (usingFinalShader)
+        shader->setUniformFloat2(SHADER_POINTER, 0.f, 0.f);
+
     if (CRASHING) {
         shader->setUniformFloat(SHADER_DISTORT, g_pHyprRenderer->m_crashingDistort);
         shader->setUniformFloat2(SHADER_FULL_SIZE, m_renderData.pMonitor->m_pixelSize.x, m_renderData.pMonitor->m_pixelSize.y);
diff --git a/src/render/Shader.hpp b/src/render/Shader.hpp
index 76d1235fb..886513025 100644
--- a/src/render/Shader.hpp
+++ b/src/render/Shader.hpp
@@ -62,6 +62,7 @@ enum eShaderUniform : uint8_t {
     SHADER_VIBRANCY_DARKNESS,
     SHADER_BRIGHTNESS,
     SHADER_NOISE,
+    SHADER_POINTER,
 
     SHADER_LAST,
 };