From 3084df112a95ea7bf4a6971b7d854514dc5c8bc3 Mon Sep 17 00:00:00 2001
From: Tom Englund <tomenglund26@gmail.com>
Date: Wed, 14 Jan 2026 18:29:04 +0100
Subject: [PATCH] egl: add pixelsPerBlock and minStride

add two helpers, pixelsPerBlock and minStride
---
 include/hyprgraphics/egl/Egl.hpp | 2 ++
 src/egl/Egl.cpp                  | 9 +++++++++
 2 files changed, 11 insertions(+)

diff --git a/include/hyprgraphics/egl/Egl.hpp b/include/hyprgraphics/egl/Egl.hpp
index 2bac0bf..1b7eb64 100644
--- a/include/hyprgraphics/egl/Egl.hpp
+++ b/include/hyprgraphics/egl/Egl.hpp
@@ -42,4 +42,6 @@ namespace Hyprgraphics::Egl {
     const SPixelFormat* getPixelFormatFromDRM(uint32_t drmFormat);
     const SPixelFormat* getPixelFormatFromGL(uint32_t glFormat, uint32_t glType, bool alpha);
     bool                isDrmFormatOpaque(uint32_t drmFormat);
+    int                 pixelsPerBlock(const SPixelFormat* const fmt);
+    int                 minStride(const SPixelFormat* const fmt, int32_t width);
 }
diff --git a/src/egl/Egl.cpp b/src/egl/Egl.cpp
index b2425cd..57f0dfa 100644
--- a/src/egl/Egl.cpp
+++ b/src/egl/Egl.cpp
@@ -1,3 +1,4 @@
+#include <cmath>
 #include <hyprgraphics/egl/Egl.hpp>
 #include <hyprutils/memory/Casts.hpp>
 #include <vector>
@@ -250,4 +251,12 @@ namespace Hyprgraphics::Egl {
 
         return !FMT->withAlpha;
     }
+
+    int pixelsPerBlock(const SPixelFormat* const fmt) {
+        return fmt->blockSize.x * fmt->blockSize.y > 0 ? fmt->blockSize.x * fmt->blockSize.y : 1;
+    }
+
+    int minStride(const SPixelFormat* const fmt, int32_t width) {
+        return std::ceil((width * fmt->bytesPerBlock) / pixelsPerBlock(fmt));
+    }
 }