From d50ad2475c45de0bcf14a2476b194de7322a35f7 Mon Sep 17 00:00:00 2001
From: UjinT34 <41110182+UjinT34@users.noreply.github.com>
Date: Sat, 18 Apr 2026 13:35:16 +0300
Subject: renderer: simplify shadows (#14047)

---
 src/render/OpenGL.cpp | 29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

(limited to 'src/render/OpenGL.cpp')

diff --git a/src/render/OpenGL.cpp b/src/render/OpenGL.cpp
index 358e4702..9883d8fc 100644
--- a/src/render/OpenGL.cpp
+++ b/src/render/OpenGL.cpp
@@ -2253,30 +2253,33 @@ void CHyprOpenGLImpl::renderRoundedShadow(const CBox& box, int round, float roun
     shader->setUniformFloat2(SHADER_TOP_LEFT, sc<float>(TOPLEFT.x), sc<float>(TOPLEFT.y));
     shader->setUniformFloat2(SHADER_BOTTOM_RIGHT, sc<float>(BOTTOMRIGHT.x), sc<float>(BOTTOMRIGHT.y));
     shader->setUniformFloat2(SHADER_FULL_SIZE, sc<float>(FULLSIZE.x), sc<float>(FULLSIZE.y));
-    shader->setUniformFloat(SHADER_RADIUS, range + round);
+    shader->setUniformFloat(SHADER_RADIUS, round);
     shader->setUniformFloat(SHADER_ROUNDING_POWER, roundingPower);
     shader->setUniformFloat(SHADER_RANGE, range);
     shader->setUniformFloat(SHADER_SHADOW_POWER, SHADOWPOWER);
 
     glBindVertexArray(shader->getUniformLocation(SHADER_SHADER_VAO));
 
+    CRegion drawRegion;
+
     if (g_pHyprRenderer->m_renderData.clipBox.width != 0 && g_pHyprRenderer->m_renderData.clipBox.height != 0) {
-        CRegion damageClip{g_pHyprRenderer->m_renderData.clipBox.x, g_pHyprRenderer->m_renderData.clipBox.y, g_pHyprRenderer->m_renderData.clipBox.width,
-                           g_pHyprRenderer->m_renderData.clipBox.height};
-        damageClip.intersect(g_pHyprRenderer->m_renderData.damage);
+        drawRegion = {g_pHyprRenderer->m_renderData.clipBox.x, g_pHyprRenderer->m_renderData.clipBox.y, g_pHyprRenderer->m_renderData.clipBox.width,
+                      g_pHyprRenderer->m_renderData.clipBox.height};
+        drawRegion.intersect(g_pHyprRenderer->m_renderData.damage);
+    } else
+        drawRegion = g_pHyprRenderer->m_renderData.damage;
 
-        if (!damageClip.empty()) {
-            damageClip.forEachRect([this](const auto& RECT) {
-                scissor(&RECT, g_pHyprRenderer->m_renderData.transformDamage);
-                glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
-            });
-        }
-    } else {
-        g_pHyprRenderer->m_renderData.damage.forEachRect([this](const auto& RECT) {
+    if (g_pHyprRenderer->m_renderData.currentWindow) {
+        auto PWINDOW = g_pHyprRenderer->m_renderData.currentWindow.lock();
+        shader->setUniformFloat(SHADER_THICK, PWINDOW->getRealBorderSize() + PWINDOW->rounding());
+        drawRegion.subtract(PWINDOW->surfaceLogicalBox().value().copy().scale(g_pHyprRenderer->m_renderData.pMonitor->m_scale).expand(-PWINDOW->rounding()));
+    }
+
+    if (!drawRegion.empty())
+        drawRegion.forEachRect([this](const auto& RECT) {
             scissor(&RECT, g_pHyprRenderer->m_renderData.transformDamage);
             glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
         });
-    }
 
     glBindVertexArray(0);
 }
-- 
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