--- a/mozilla-bmo849632.patch	Mon Nov 25 08:41:45 2019 +0100
+++ b/mozilla-bmo849632.patch	Thu Jun 11 22:04:26 2020 +0200
@@ -1,16 +1,24 @@
+# HG changeset patch
+# Parent  3de59fe1b8708c01e134ce698c4232b8a854f617
 Problem:  webGL sites are displayed in the wrong color (usually blue-ish)
 Solution: Problem is with skia once again. Output of webgl seems endian-correct, but skia only
           knows how to deal with little endian.
           So we swizzle the output of webgl after reading it from readpixels()
 Note:     This does not fix all webGL sites, but is a step in the right direction
-diff -r 6b017d3e9733 gfx/gl/GLContext.h
---- a/gfx/gl/GLContext.h    Mon Sep 09 10:04:05 2019 +0200
-+++ b/gfx/gl/GLContext.h    Wed Nov 13 17:13:04 2019 +0100
-@@ -1551,6 +1551,13 @@
+
+diff --git a/gfx/gl/GLContext.h b/gfx/gl/GLContext.h
+--- a/gfx/gl/GLContext.h
++++ b/gfx/gl/GLContext.h
+@@ -1548,16 +1548,23 @@ class GLContext : public GenericAtomicRe
+     AFTER_GL_CALL;
+   }
+ 
+   void raw_fReadPixels(GLint x, GLint y, GLsizei width, GLsizei height,
+                        GLenum format, GLenum type, GLvoid* pixels) {
      BEFORE_GL_CALL;
      mSymbols.fReadPixels(x, y, width, height, format, type, pixels);
      OnSyncCall();
-+#if MOZ_BIG_ENDIAN
++#if MOZ_BIG_ENDIAN()
 +    uint8_t* itr = (uint8_t*)pixels;
 +    for (GLsizei i = 0; i < width * height; i++) {
 +      NativeEndian::swapToLittleEndianInPlace((uint32_t*)itr, 1);
@@ -20,4 +28,8 @@
      AFTER_GL_CALL;
      mHeavyGLCallsSinceLastFlush = true;
    }
-
+ 
+   void fReadPixels(GLint x, GLint y, GLsizei width, GLsizei height,
+                    GLenum format, GLenum type, GLvoid* pixels);
+ 
+  public: