COGLES2Driver: fix swapped color screenshots

minetest · May 8, 2021 · 05c109a · 05c109a
1 parent 0805794
commit 05c109a
Showing 1 changed file with 16 additions and 0 deletions.
diff --git 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();