From 4c0a23611b3906855db7b93da2f34aec57930cdf Mon Sep 17 00:00:00 2001
From: Geoff Lang <geofflang@chromium.org>
Date: Tue, 25 Jun 2019 10:56:29 -0400
Subject: [PATCH] Update ValidateSamplerParameterBase to use const parameters.

ValidateSamplerParameterBase is called with both const and non-const
parameter pointers which caused our explicit template instantiations to
not cover all cases resulting in link errors.  Force the parameters to
always be const so that our instantiations cover everything.

BUG=angleproject:3555

Change-Id: Ibf92572ba80a689c75dcdc70e5153d9941da76f3
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1676305
Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
---

diff --git a/third_party/angle/src/libANGLE/validationES.cpp b/third_party/angle/src/libANGLE/validationES.cpp
index 041803a..3f402f6 100644
--- a/third_party/angle/src/libANGLE/validationES.cpp
+++ b/third_party/angle/src/libANGLE/validationES.cpp
@@ -189,7 +189,9 @@
 }
 
 template <typename ParamType>
-bool ValidateTextureWrapModeValue(Context *context, ParamType *params, bool restrictedWrapModes)
+bool ValidateTextureWrapModeValue(Context *context,
+                                  const ParamType *params,
+                                  bool restrictedWrapModes)
 {
     switch (ConvertToGLenum(params[0]))
     {
@@ -223,7 +225,9 @@
 }
 
 template <typename ParamType>
-bool ValidateTextureMinFilterValue(Context *context, ParamType *params, bool restrictedMinFilter)
+bool ValidateTextureMinFilterValue(Context *context,
+                                   const ParamType *params,
+                                   bool restrictedMinFilter)
 {
     switch (ConvertToGLenum(params[0]))
     {
@@ -252,7 +256,7 @@
 }
 
 template <typename ParamType>
-bool ValidateTextureMagFilterValue(Context *context, ParamType *params)
+bool ValidateTextureMagFilterValue(Context *context, const ParamType *params)
 {
     switch (ConvertToGLenum(params[0]))
     {
@@ -269,7 +273,7 @@
 }
 
 template <typename ParamType>
-bool ValidateTextureCompareModeValue(Context *context, ParamType *params)
+bool ValidateTextureCompareModeValue(Context *context, const ParamType *params)
 {
     // Acceptable mode parameters from GLES 3.0.2 spec, table 3.17
     switch (ConvertToGLenum(params[0]))
@@ -287,7 +291,7 @@
 }
 
 template <typename ParamType>
-bool ValidateTextureCompareFuncValue(Context *context, ParamType *params)
+bool ValidateTextureCompareFuncValue(Context *context, const ParamType *params)
 {
     // Acceptable function parameters from GLES 3.0.2 spec, table 3.17
     switch (ConvertToGLenum(params[0]))
@@ -311,7 +315,7 @@
 }
 
 template <typename ParamType>
-bool ValidateTextureSRGBDecodeValue(Context *context, ParamType *params)
+bool ValidateTextureSRGBDecodeValue(Context *context, const ParamType *params)
 {
     if (!context->getExtensions().textureSRGBDecode)
     {
@@ -5996,7 +6000,7 @@
                                   GLenum pname,
                                   GLsizei bufSize,
                                   bool vectorParams,
-                                  ParamType *params)
+                                  const ParamType *params)
 {
     if (context->getClientMajorVersion() < 3)
     {
@@ -6099,8 +6103,13 @@
     return true;
 }
 
-template bool ValidateSamplerParameterBase(Context *, GLuint, GLenum, GLsizei, bool, GLfloat *);
-template bool ValidateSamplerParameterBase(Context *, GLuint, GLenum, GLsizei, bool, GLint *);
+template bool ValidateSamplerParameterBase(Context *,
+                                           GLuint,
+                                           GLenum,
+                                           GLsizei,
+                                           bool,
+                                           const GLfloat *);
+template bool ValidateSamplerParameterBase(Context *, GLuint, GLenum, GLsizei, bool, const GLint *);
 template bool ValidateSamplerParameterBase(Context *,
                                            GLuint,
                                            GLenum,
diff --git a/third_party/angle/src/libANGLE/validationES.h b/third_party/angle/src/libANGLE/validationES.h
index c61bda6..4b06d28 100644
--- a/third_party/angle/src/libANGLE/validationES.h
+++ b/third_party/angle/src/libANGLE/validationES.h
@@ -584,7 +584,7 @@
                                   GLenum pname,
                                   GLsizei bufSize,
                                   bool vectorParams,
-                                  ParamType *params);
+                                  const ParamType *params);
 
 bool ValidateGetInternalFormativBase(Context *context,
                                      GLenum target,