From b65714e3b8e123fb2febd507905d25fa6abd0400 Mon Sep 17 00:00:00 2001
From: Tom Englund <tomenglund26@gmail.com>
Date: Thu, 23 Apr 2026 14:32:11 +0200
Subject: [PATCH] opengl: minor egl changes (#14147)

* opengl: explicitly set stencil mask

set stencil mask to 0xFF to allow writes, when done set it back to 0x00
to become readonly, avoids potential mishaps. also at the end set the
stencil op to GL_KEEP and it will certainly be read only until next time
its changed.

* opengl: use modern glClearBufferfv over glClear

use more modern glClearBufferfv instead, and also clear the entire
buffer if a clearpass has been added but no renderdamage exist.
---
 src/render/OpenGL.cpp               |  4 +++-
 src/render/gl/GLElementRenderer.cpp | 12 +++++++-----
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/render/OpenGL.cpp b/src/render/OpenGL.cpp
index 590330a33..7051c10c8 100644
--- a/src/render/OpenGL.cpp
+++ b/src/render/OpenGL.cpp
@@ -1933,6 +1933,7 @@ void CHyprOpenGLImpl::renderTextureWithBlurInternal(SP<ITexture> tex, const CBox
 
         if (NEEDS_STENCIL) {
             scissor(nullptr); // allow the entire window and stencil to render
+            glStencilMask(0xFF);
             glClearStencil(0);
             glClear(GL_STENCIL_BUFFER_BIT);
 
@@ -1964,7 +1965,8 @@ void CHyprOpenGLImpl::renderTextureWithBlurInternal(SP<ITexture> tex, const CBox
             glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 
             glStencilFunc(GL_EQUAL, 1, 0xFF);
-            glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
+            glStencilMask(0x00);
+            glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
         }
 
         // stencil done. Render everything.
diff --git a/src/render/gl/GLElementRenderer.cpp b/src/render/gl/GLElementRenderer.cpp
index 670c78862..dbf62cb8f 100644
--- a/src/render/gl/GLElementRenderer.cpp
+++ b/src/render/gl/GLElementRenderer.cpp
@@ -24,15 +24,17 @@ void CGLElementRenderer::draw(WP<CClearPassElement> element, const CRegion& dama
     RASSERT(g_pHyprRenderer->m_renderData.pMonitor, "Tried to render without begin()!");
 
     TRACY_GPU_ZONE("RenderClear");
-
-    GLCALL(glClearColor(color.r, color.g, color.b, color.a));
+    const std::array<GLfloat, 4> c = {sc<GLfloat>(color.r), sc<GLfloat>(color.g), sc<GLfloat>(color.b), sc<GLfloat>(color.a)};
 
     if (!g_pHyprRenderer->m_renderData.damage.empty()) {
-        g_pHyprRenderer->m_renderData.damage.forEachRect([](const auto& RECT) {
+        g_pHyprRenderer->m_renderData.damage.forEachRect([&c](const auto& RECT) {
             g_pHyprOpenGL->scissor(&RECT, g_pHyprRenderer->m_renderData.transformDamage);
-            glClear(GL_COLOR_BUFFER_BIT);
+            glClearBufferfv(GL_COLOR, 0, c.data());
         });
-    }
+
+        g_pHyprOpenGL->scissor(nullptr);
+    } else
+        glClearBufferfv(GL_COLOR, 0, c.data());
 };
 
 void CGLElementRenderer::draw(WP<CFramebufferElement> element, const CRegion& damage) {