From 05c109a1d52db8293d8721337853043924feedae Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Sat, 8 May 2021 20:57:24 +0200
Subject: [PATCH] COGLES2Driver: fix swapped color screenshots

---
 source/Irrlicht/COGLES2Driver.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/source/Irrlicht/COGLES2Driver.cpp b/source/Irrlicht/COGLES2Driver.cpp
index fe960f3d..f5061144 100644
--- a/source/Irrlicht/COGLES2Driver.cpp
+++ b/source/Irrlicht/COGLES2Driver.cpp
@@ -2591,6 +2591,22 @@ COGLES2Driver::~COGLES2Driver()
 		}
 		delete [] tmpBuffer;
 
+		// also GL_RGBA doesn't match the internal encoding of the image (which is BGRA)
+		if (GL_RGBA == internalformat && GL_UNSIGNED_BYTE == type)
+		{
+			pixels = static_cast<u8*>(newImage->getData());
+			for (u32 i = 0; i < ScreenSize.Height; i++)
+			{
+				for (u32 j = 0; j < ScreenSize.Width; j++)
+				{
+					u32 c = *(u32*) (pixels + 4 * j);
+					*(u32*) (pixels + 4 * j) = (c & 0xFF00FF00) |
+						((c & 0x00FF0000) >> 16) | ((c & 0x000000FF) << 16);
+				}
+				pixels += pitch;
+			}
+		}
+
 		if (testGLError(__LINE__))
 		{
 			newImage->drop();