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

gpu/command_buffer/service/texture_manager.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/texture_manager.h"
 #include "base/bits.h"
 #include "base/strings/stringprintf.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/command_buffer/service/context_state.h"
 #include "gpu/command_buffer/service/error_state.h"
@@ skipping 101 matching lines @@
       pool_(GL_TEXTURE_POOL_UNMANAGED_CHROMIUM),
       max_level_set_(-1),
       texture_complete_(false),
       cube_complete_(false),
       npot_(false),
       has_been_bound_(false),
       framebuffer_attachment_count_(0),
       immutable_(false),
       has_images_(false),
       estimated_size_(0),
-      can_render_condition_(CAN_RENDER_ALWAYS) {
+      can_render_condition_(CAN_RENDER_ALWAYS),
+      texture_max_anisotropy_initialized_(false) {
 }
 
 Texture::~Texture() {
   if (mailbox_manager_)
     mailbox_manager_->TextureDeleted(this);
 }
 
 void Texture::AddTextureRef(TextureRef* ref) {
   DCHECK(refs_.find(ref) == refs_.end());
   refs_.insert(ref);
@@ skipping 615 matching lines @@
   if (face_index >= level_infos_.size() ||
       level >= static_cast<GLint>(level_infos_[face_index].size())) {
     return true;
   }
 
   const Texture::LevelInfo& info = level_infos_[face_index][level];
 
   return info.cleared;
 }
 
+void Texture::InitTextureMaxAnisotropyIfNeeded(GLenum target) {
+  if (texture_max_anisotropy_initialized_)
+    return;
+  texture_max_anisotropy_initialized_ = true;
+  GLfloat params[] = { 1.0f };
+  glTexParameterfv(target, GL_TEXTURE_MAX_ANISOTROPY_EXT, params);
+}
+
 bool Texture::ClearLevel(
     GLES2Decoder* decoder, GLenum target, GLint level) {
   DCHECK(decoder);
   size_t face_index = GLTargetToFaceIndex(target);
   if (face_index >= level_infos_.size() ||
       level >= static_cast<GLint>(level_infos_[face_index].size())) {
     return true;
   }
 
   Texture::LevelInfo& info = level_infos_[face_index][level];
@@ skipping 725 matching lines @@
 }
 
 ScopedTextureUploadTimer::~ScopedTextureUploadTimer() {
   texture_state_->texture_upload_count++;
   texture_state_->total_texture_upload_time +=
       base::TimeTicks::HighResNow() - begin_time_;
 }
 
 }  // namespace gles2
 }  // namespace gpu