Workaround Linux AMD driver bug where TEXTURE_MAX_ANISOTROPY init value is incorrect.

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 1247 matching lines @@
   void DoGetProgramiv(
       GLuint program_id, GLenum pname, GLint* params);
 
   // Wrapper for glRenderbufferParameteriv.
   void DoGetRenderbufferParameteriv(
       GLenum target, GLenum pname, GLint* params);
 
   // Wrapper for glGetShaderiv
   void DoGetShaderiv(GLuint shader, GLenum pname, GLint* params);
 
+  // Wrappers for glGetTexParameter.
+  void DoGetTexParameterfv(GLenum target, GLenum pname, GLfloat* params);
+  void DoGetTexParameteriv(GLenum target, GLenum pname, GLint* params);
+  void InitTextureMaxAnisotropyIfNeeded(GLenum target, GLenum pname);
+
   // Wrappers for glGetVertexAttrib.
   void DoGetVertexAttribfv(GLuint index, GLenum pname, GLfloat *params);
   void DoGetVertexAttribiv(GLuint index, GLenum pname, GLint *params);
 
   // Wrappers for glIsXXX functions.
   bool DoIsEnabled(GLenum cap);
   bool DoIsBuffer(GLuint client_id);
   bool DoIsFramebuffer(GLuint client_id);
   bool DoIsProgram(GLuint client_id);
   bool DoIsRenderbuffer(GLuint client_id);
@@ skipping 5578 matching lines @@
       break;
     case GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE:
       *params = attrib->divisor();
       break;
     default:
       NOTREACHED();
       break;
   }
 }
 
+void GLES2DecoderImpl::DoGetTexParameterfv(
+    GLenum target, GLenum pname, GLfloat* params) {
+  InitTextureMaxAnisotropyIfNeeded(target, pname);
+  glGetTexParameterfv(target, pname, params);
+}
+
+void GLES2DecoderImpl::DoGetTexParameteriv(
+    GLenum target, GLenum pname, GLint* params) {
+  InitTextureMaxAnisotropyIfNeeded(target, pname);
+  glGetTexParameteriv(target, pname, params);
+}
+
+void GLES2DecoderImpl::InitTextureMaxAnisotropyIfNeeded(
+    GLenum target, GLenum pname) {
+  if (!workarounds().init_texture_max_anisotropy)
+    return;
+  if (pname != GL_TEXTURE_MAX_ANISOTROPY_EXT ||
+      !validators_->texture_parameter.IsValid(pname)) {
+    return;
+  }
+
+  TextureRef* texture_ref = texture_manager()->GetTextureInfoForTarget(
+      &state_, target);
+  if (!texture_ref) {
+    LOCAL_SET_GL_ERROR(
+        GL_INVALID_OPERATION,
+        "glGetTexParamter{fi}v", "unknown texture for target");
+    return;
+  }
+  Texture* texture = texture_ref->texture();
+  texture->InitTextureMaxAnisotropyIfNeeded(target);
+}
+
 void GLES2DecoderImpl::DoGetVertexAttribfv(
     GLuint index, GLenum pname, GLfloat* params) {
   VertexAttrib* attrib = state_.vertex_attrib_manager->GetVertexAttrib(index);
   if (!attrib) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_VALUE, "glGetVertexAttribfv", "index out of range");
     return;
   }
   switch (pname) {
     case GL_CURRENT_VERTEX_ATTRIB: {
@@ skipping 3669 matching lines @@
   DoDidUseTexImageIfNeeded(texture, texture->target());
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu