From 2b4d11c0f13384ede1954c56264acd5da176465c Mon Sep 17 00:00:00 2001
From: Lei Zhang <thestig@chromium.org>
Date: Thu, 27 Sep 2018 16:48:11 +0000
Subject: Shading functions should take const matrix pointers.

Change-Id: If13cc70d3d047f255f5d289f35a8533811523146
Reviewed-on: https://pdfium-review.googlesource.com/43110
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
---
 core/fpdfapi/render/cpdf_renderstatus.cpp | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/core/fpdfapi/render/cpdf_renderstatus.cpp b/core/fpdfapi/render/cpdf_renderstatus.cpp
index b801c19c53..fd2897eaa4 100644
--- a/core/fpdfapi/render/cpdf_renderstatus.cpp
+++ b/core/fpdfapi/render/cpdf_renderstatus.cpp
@@ -144,7 +144,7 @@ void GetShadingSteps(float t_min,
 }
 
 void DrawAxialShading(const RetainPtr<CFX_DIBitmap>& pBitmap,
-                      CFX_Matrix* pObject2Bitmap,
+                      const CFX_Matrix* pObject2Bitmap,
                       const CPDF_Dictionary* pDict,
                       const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
                       const CPDF_ColorSpace* pCS,
@@ -214,7 +214,7 @@ void DrawAxialShading(const RetainPtr<CFX_DIBitmap>& pBitmap,
 }
 
 void DrawRadialShading(const RetainPtr<CFX_DIBitmap>& pBitmap,
-                       CFX_Matrix* pObject2Bitmap,
+                       const CFX_Matrix* pObject2Bitmap,
                        const CPDF_Dictionary* pDict,
                        const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
                        const CPDF_ColorSpace* pCS,
@@ -317,7 +317,7 @@ void DrawRadialShading(const RetainPtr<CFX_DIBitmap>& pBitmap,
 }
 
 void DrawFuncShading(const RetainPtr<CFX_DIBitmap>& pBitmap,
-                     CFX_Matrix* pObject2Bitmap,
+                     const CFX_Matrix* pObject2Bitmap,
                      const CPDF_Dictionary* pDict,
                      const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
                      const CPDF_ColorSpace* pCS,
@@ -477,7 +477,7 @@ void DrawGouraud(const RetainPtr<CFX_DIBitmap>& pBitmap,
 
 void DrawFreeGouraudShading(
     const RetainPtr<CFX_DIBitmap>& pBitmap,
-    CFX_Matrix* pObject2Bitmap,
+    const CFX_Matrix* pObject2Bitmap,
     const CPDF_Stream* pShadingStream,
     const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
     const CPDF_ColorSpace* pCS,
@@ -518,7 +518,7 @@ void DrawFreeGouraudShading(
 
 void DrawLatticeGouraudShading(
     const RetainPtr<CFX_DIBitmap>& pBitmap,
-    CFX_Matrix* pObject2Bitmap,
+    const CFX_Matrix* pObject2Bitmap,
     const CPDF_Stream* pShadingStream,
     const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
     const CPDF_ColorSpace* pCS,
@@ -836,7 +836,7 @@ struct CPDF_PatchDrawer {
 void DrawCoonPatchMeshes(
     ShadingType type,
     const RetainPtr<CFX_DIBitmap>& pBitmap,
-    CFX_Matrix* pObject2Bitmap,
+    const CFX_Matrix* pObject2Bitmap,
     const CPDF_Stream* pShadingStream,
     const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
     const CPDF_ColorSpace* pCS,
-- 
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