From 4f504d46be3df72acba5892da090355b2189974d Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@gmail.com>
Date: Thu, 30 Aug 2018 12:36:03 +0200
Subject: Revert "Bug 1388020. r=nical, a=RyanVM"

This reverts commit e7189e33f533f9b974b22c2110b522a13bc4c7f6.
---
 gfx/gl/GLUploadHelpers.cpp | 31 +------------------------------
 1 file changed, 1 insertion(+), 30 deletions(-)

(limited to 'gfx/gl/GLUploadHelpers.cpp')

diff --git a/gfx/gl/GLUploadHelpers.cpp b/gfx/gl/GLUploadHelpers.cpp
index ca1c890a4..75165eedf 100644
--- a/gfx/gl/GLUploadHelpers.cpp
+++ b/gfx/gl/GLUploadHelpers.cpp
@@ -27,23 +27,6 @@ DataOffset(const IntPoint& aPoint, int32_t aStride, SurfaceFormat aFormat)
   return data;
 }
 
-static bool
-CheckUploadBounds(const IntSize& aDst, const IntSize& aSrc, const IntPoint& aOffset)
-{
-  if (aOffset.x < 0 || aOffset.y < 0 ||
-      aOffset.x >= aSrc.width ||
-      aOffset.y >= aSrc.height) {
-    MOZ_ASSERT_UNREACHABLE("Offset outside source bounds");
-    return false;
-  }
-  if (aDst.width > (aSrc.width - aOffset.x) ||
-      aDst.height > (aSrc.height - aOffset.y)) {
-    MOZ_ASSERT_UNREACHABLE("Source has insufficient data");
-    return false;
-  }
-  return true;
-}
-
 static GLint GetAddressAlignment(ptrdiff_t aAddress)
 {
     if (!(aAddress & 0x7)) {
@@ -392,7 +375,6 @@ TexImage2DHelper(GLContext* gl,
 SurfaceFormat
 UploadImageDataToTexture(GLContext* gl,
                          unsigned char* aData,
-                         const gfx::IntSize& aDataSize,
                          int32_t aStride,
                          SurfaceFormat aFormat,
                          const nsIntRegion& aDstRegion,
@@ -516,10 +498,6 @@ UploadImageDataToTexture(GLContext* gl,
         // Upload each rect in the region to the texture
         for (auto iter = aDstRegion.RectIter(); !iter.Done(); iter.Next()) {
             const IntRect& rect = iter.Get();
-            if (!CheckUploadBounds(rect.Size(), aDataSize, rect.TopLeft())) {
-                return SurfaceFormat::UNKNOWN;
-            }
-
             const unsigned char* rectData =
                 aData + DataOffset(rect.TopLeft(), aStride, aFormat);
 
@@ -556,17 +534,10 @@ UploadSurfaceToTexture(GLContext* gl,
 
     int32_t stride = aSurface->Stride();
     SurfaceFormat format = aSurface->GetFormat();
-    gfx::IntSize size = aSurface->GetSize();
-    if (!CheckUploadBounds(aSize, size, aSrcPoint)) {
-        return SurfaceFormat::UNKNOWN;
-    }
-
     unsigned char* data = aSurface->GetData() +
         DataOffset(aSrcPoint, stride, format);
-    size.width -= aSrcPoint.x;
-    size.height -= aSrcPoint.y;
 
-    return UploadImageDataToTexture(gl, data, size, stride, format,
+    return UploadImageDataToTexture(gl, data, stride, format,
                                     aDstRegion, aTexture, aSize,
                                     aOutUploadSize, aNeedInit,
                                     aTextureUnit, aTextureTarget);
-- 
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