Relocate and mock texture copier

This is for reuse by RasterDecoder in a subsequent CL. The test added
for GLES2DecoderImpl is similar to what will be added for
RasterDecoderImpl.

Changes:
- made CopyTextureMethod an enum class for easy forward decl
- moved ValidateCopyTexFormatHelper and GetCopyTextureCHROMIUMMethod for
  future reuse
- added mock for texture copying
- added unittest to make sure that texture copying clears source and
  destination textures appropriately

Bug: 789238
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: I44a1ca37ad48d065acfd9d94b737ac1d925d99e5
Reviewed-on: https://chromium-review.googlesource.com/993592
Commit-Queue: Jonathan Backer <backer@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548228}

gpu/BUILD.gn

@@ -144,6 +144,8 @@ static_library("test_support") {
     "command_buffer/client/client_test_helper.h",
     "command_buffer/client/gles2_interface_stub.cc",
     "command_buffer/client/gles2_interface_stub.h",
+    "command_buffer/service/copy_texture_chromium_mock.cc",
+    "command_buffer/service/copy_texture_chromium_mock.h",
     "command_buffer/service/error_state_mock.cc",
     "command_buffer/service/error_state_mock.h",
     "command_buffer/service/gles2_cmd_decoder_mock.cc",

gpu/command_buffer/service/copy_texture_chromium_mock.cc

+// Copyright 2018 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/copy_texture_chromium_mock.h"
+
+namespace gpu {
+namespace gles2 {
+
+MockCopyTextureResourceManager::MockCopyTextureResourceManager() = default;
+MockCopyTextureResourceManager::~MockCopyTextureResourceManager() = default;
+
+}  // namespace gles2
+}  // namespace gpu

gpu/command_buffer/service/copy_texture_chromium_mock.h

+// Copyright 2018 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.
+
+#ifndef GPU_COMMAND_BUFFER_SERVICE_COPY_TEXTURE_CHROMIUM_MOCK_H_
+#define GPU_COMMAND_BUFFER_SERVICE_COPY_TEXTURE_CHROMIUM_MOCK_H_
+
+#include "gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+namespace gpu {
+namespace gles2 {
+
+class MockCopyTextureResourceManager
+    : public CopyTextureCHROMIUMResourceManager {
+ public:
+  MockCopyTextureResourceManager();
+  ~MockCopyTextureResourceManager() final;
+
+  MOCK_METHOD2(Initialize,
+               void(const DecoderContext* decoder,
+                    const gles2::FeatureInfo::FeatureFlags& feature_flags));
+  MOCK_METHOD0(Destroy, void());
+
+  // Cannot MOCK_METHOD more than 10 args.
+  void DoCopyTexture(
+      const DecoderContext* decoder,
+      GLenum source_target,
+      GLuint source_id,
+      GLint source_level,
+      GLenum source_internal_format,
+      GLenum dest_target,
+      GLuint dest_id,
+      GLint dest_level,
+      GLenum dest_internal_format,
+      GLsizei width,
+      GLsizei height,
+      bool flip_y,
+      bool premultiply_alpha,
+      bool unpremultiply_alpha,
+      bool dither,
+      CopyTextureMethod method,
+      CopyTexImageResourceManager* luma_emulation_blitter) override {}
+  void DoCopySubTexture(
+      const DecoderContext* decoder,
+      GLenum source_target,
+      GLuint source_id,
+      GLint source_level,
+      GLenum source_internal_format,
+      GLenum dest_target,
+      GLuint dest_id,
+      GLint dest_level,
+      GLenum dest_internal_format,
+      GLint xoffset,
+      GLint yoffset,
+      GLint x,
+      GLint y,
+      GLsizei width,
+      GLsizei height,
+      GLsizei dest_width,
+      GLsizei dest_height,
+      GLsizei source_width,
+      GLsizei source_height,
+      bool flip_y,
+      bool premultiply_alpha,
+      bool unpremultiply_alpha,
+      bool dither,
+      CopyTextureMethod method,
+      CopyTexImageResourceManager* luma_emulation_blitter) override {}
+  void DoCopySubTextureWithTransform(
+      const DecoderContext* decoder,
+      GLenum source_target,
+      GLuint source_id,
+      GLint source_level,
+      GLenum source_internal_format,
+      GLenum dest_target,
+      GLuint dest_id,
+      GLint dest_level,
+      GLenum dest_internal_format,
+      GLint xoffset,
+      GLint yoffset,
+      GLint x,
+      GLint y,
+      GLsizei width,
+      GLsizei height,
+      GLsizei dest_width,
+      GLsizei dest_height,
+      GLsizei source_width,
+      GLsizei source_height,
+      bool flip_y,
+      bool premultiply_alpha,
+      bool unpremultiply_alpha,
+      bool dither,
+      const GLfloat transform_matrix[16],
+      CopyTexImageResourceManager* luma_emulation_blitter) override{};
+  void DoCopyTextureWithTransform(
+      const DecoderContext* decoder,
+      GLenum source_target,
+      GLuint source_id,
+      GLint source_level,
+      GLenum source_format,
+      GLenum dest_target,
+      GLuint dest_id,
+      GLint dest_level,
+      GLenum dest_format,
+      GLsizei width,
+      GLsizei height,
+      bool flip_y,
+      bool premultiply_alpha,
+      bool unpremultiply_alpha,
+      bool dither,
+      const GLfloat transform_matrix[16],
+      CopyTexImageResourceManager* luma_emulation_blitter) override{};
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockCopyTextureResourceManager);
+};
+
+}  // namespace gles2
+}  // namespace gpu
+
+#endif  // GPU_COMMAND_BUFFER_SERVICE_COPY_TEXTURE_CHROMIUM_MOCK_H_

gpu/command_buffer/service/gl_utils.cc

@@ -10,7 +10,9 @@
 #include "gpu/command_buffer/common/capabilities.h"
 #include "gpu/command_buffer/service/error_state.h"
 #include "gpu/command_buffer/service/feature_info.h"
+#include "gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h"
 #include "gpu/command_buffer/service/logger.h"
+#include "gpu/command_buffer/service/texture_manager.h"
 #include "ui/gl/gl_version_info.h"
 
 namespace gpu {
@@ -491,5 +493,154 @@ bool GetCompressedTexSizeInBytes(const char* function_name,
   return true;
 }
 
+bool ValidateCopyTexFormatHelper(const FeatureInfo* feature_info,
+                                 GLenum internal_format,
+                                 GLenum read_format,
+                                 GLenum read_type,
+                                 std::string* output_error_msg) {
+  DCHECK(output_error_msg);
+  if (read_format == 0) {
+    *output_error_msg = std::string("no valid color image");
+    return false;
+  }
+  // Check we have compatible formats.
+  uint32_t channels_exist = GLES2Util::GetChannelsForFormat(read_format);
+  uint32_t channels_needed = GLES2Util::GetChannelsForFormat(internal_format);
+  if (!channels_needed ||
+      (channels_needed & channels_exist) != channels_needed) {
+    *output_error_msg = std::string("incompatible format");
+    return false;
+  }
+  if (feature_info->IsWebGL2OrES3Context()) {
+    GLint color_encoding =
+        GLES2Util::GetColorEncodingFromInternalFormat(read_format);
+    bool float_mismatch = feature_info->ext_color_buffer_float_available()
+                              ? (GLES2Util::IsIntegerFormat(internal_format) !=
+                                 GLES2Util::IsIntegerFormat(read_format))
+                              : GLES2Util::IsFloatFormat(internal_format);
+    if (color_encoding !=
+            GLES2Util::GetColorEncodingFromInternalFormat(internal_format) ||
+        float_mismatch ||
+        (GLES2Util::IsSignedIntegerFormat(internal_format) !=
+         GLES2Util::IsSignedIntegerFormat(read_format)) ||
+        (GLES2Util::IsUnsignedIntegerFormat(internal_format) !=
+         GLES2Util::IsUnsignedIntegerFormat(read_format))) {
+      *output_error_msg = std::string("incompatible format");
+      return false;
+    }
+  }
+  if ((channels_needed & (GLES2Util::kDepth | GLES2Util::kStencil)) != 0) {
+    *output_error_msg =
+        std::string("can not be used with depth or stencil textures");
+    return false;
+  }
+  if (feature_info->IsWebGL2OrES3Context() ||
+      (feature_info->feature_flags().chromium_color_buffer_float_rgb &&
+       internal_format == GL_RGB32F) ||
+      (feature_info->feature_flags().chromium_color_buffer_float_rgba &&
+       internal_format == GL_RGBA32F)) {
+    if (GLES2Util::IsSizedColorFormat(internal_format)) {
+      int sr, sg, sb, sa;
+      GLES2Util::GetColorFormatComponentSizes(read_format, read_type, &sr, &sg,
+                                              &sb, &sa);
+      DCHECK(sr > 0 || sg > 0 || sb > 0 || sa > 0);
+      int dr, dg, db, da;
+      GLES2Util::GetColorFormatComponentSizes(internal_format, 0, &dr, &dg, &db,
+                                              &da);
+      DCHECK(dr > 0 || dg > 0 || db > 0 || da > 0);
+      if ((dr > 0 && sr != dr) || (dg > 0 && sg != dg) ||
+          (db > 0 && sb != db) || (da > 0 && sa != da)) {
+        *output_error_msg = std::string("incompatible color component sizes");
+        return false;
+      }
+    }
+  }
+  return true;
+}
+
+CopyTextureMethod GetCopyTextureCHROMIUMMethod(const FeatureInfo* feature_info,
+                                               GLenum source_target,
+                                               GLint source_level,
+                                               GLenum source_internal_format,
+                                               GLenum source_type,
+                                               GLenum dest_target,
+                                               GLint dest_level,
+                                               GLenum dest_internal_format,
+                                               bool flip_y,
+                                               bool premultiply_alpha,
+                                               bool unpremultiply_alpha,
+                                               bool dither) {
+  bool premultiply_alpha_change = premultiply_alpha ^ unpremultiply_alpha;
+  bool source_format_color_renderable =
+      Texture::ColorRenderable(feature_info, source_internal_format, false);
+  bool dest_format_color_renderable =
+      Texture::ColorRenderable(feature_info, dest_internal_format, false);
+  std::string output_error_msg;
+
+  switch (dest_internal_format) {
+#if defined(OS_MACOSX)
+    // RGB5_A1 is not color-renderable on NVIDIA Mac, see
+    // https://crbug.com/676209.
+    case GL_RGB5_A1:
+      return CopyTextureMethod::DRAW_AND_READBACK;
+#endif
+    // RGB9_E5 isn't accepted by glCopyTexImage2D if underlying context is ES.
+    case GL_RGB9_E5:
+      if (feature_info->gl_version_info().is_es)
+        return CopyTextureMethod::DRAW_AND_READBACK;
+      break;
+    // SRGB format has color-space conversion issue. WebGL spec doesn't define
+    // clearly if linear-to-srgb color space conversion is required or not when
+    // uploading DOM elements to SRGB textures. WebGL conformance test expects
+    // no linear-to-srgb conversion, while current GPU path for
+    // CopyTextureCHROMIUM does the conversion. Do a fallback path before the
+    // issue is resolved. see https://github.com/KhronosGroup/WebGL/issues/2165.
+    // TODO(qiankun.miao@intel.com): revisit this once the above issue is
+    // resolved.
+    case GL_SRGB_EXT:
+    case GL_SRGB_ALPHA_EXT:
+    case GL_SRGB8:
+    case GL_SRGB8_ALPHA8:
+      if (feature_info->IsWebGLContext())
+        return CopyTextureMethod::DRAW_AND_READBACK;
+      break;
+    default:
+      break;
+  }
+
+  // CopyTexImage* should not allow internalformat of GL_BGRA_EXT and
+  // GL_BGRA8_EXT. https://crbug.com/663086.
+  bool copy_tex_image_format_valid =
+      source_internal_format != GL_BGRA_EXT &&
+      dest_internal_format != GL_BGRA_EXT &&
+      source_internal_format != GL_BGRA8_EXT &&
+      dest_internal_format != GL_BGRA8_EXT &&
+      ValidateCopyTexFormatHelper(feature_info, dest_internal_format,
+                                  source_internal_format, source_type,
+                                  &output_error_msg);
+
+  // TODO(qiankun.miao@intel.com): for WebGL 2.0 or OpenGL ES 3.0, both
+  // DIRECT_DRAW path for dest_level > 0 and DIRECT_COPY path for source_level >
+  // 0 are not available due to a framebuffer completeness bug:
+  // https://crbug.com/678526. Once the bug is fixed, the limitation for WebGL
+  // 2.0 and OpenGL ES 3.0 can be lifted. For WebGL 1.0 or OpenGL ES 2.0,
+  // DIRECT_DRAW path isn't available for dest_level > 0 due to level > 0 isn't
+  // supported by glFramebufferTexture2D in ES2 context. DIRECT_DRAW path isn't
+  // available for cube map dest texture either due to it may be cube map
+  // incomplete. Go to DRAW_AND_COPY path in these cases.
+  if (source_target == GL_TEXTURE_2D &&
+      (dest_target == GL_TEXTURE_2D || dest_target == GL_TEXTURE_CUBE_MAP) &&
+      source_format_color_renderable && copy_tex_image_format_valid &&
+      source_level == 0 && !flip_y && !premultiply_alpha_change && !dither)
+    return CopyTextureMethod::DIRECT_COPY;
+  if (dest_format_color_renderable && dest_level == 0 &&
+      dest_target != GL_TEXTURE_CUBE_MAP)
+    return CopyTextureMethod::DIRECT_DRAW;
+
+  // Draw to a fbo attaching level 0 of an intermediate texture,
+  // then copy from the fbo to dest texture level with glCopyTexImage2D.
+  return CopyTextureMethod::DRAW_AND_COPY;
+}
+
 }  // namespace gles2
 }  // namespace gpu

gpu/command_buffer/service/gl_utils.h

@@ -41,6 +41,7 @@ namespace gles2 {
 class ErrorState;
 class FeatureInfo;
 class Logger;
+enum class CopyTextureMethod;
 
 struct CALayerSharedState {
   float opacity;
@@ -104,6 +105,25 @@ bool GetCompressedTexSizeInBytes(const char* function_name,
                                  GLsizei* size_in_bytes,
                                  ErrorState* error_state);
 
+bool ValidateCopyTexFormatHelper(const FeatureInfo* feature_info,
+                                 GLenum internal_format,
+                                 GLenum read_format,
+                                 GLenum read_type,
+                                 std::string* output_error_msg);
+
+CopyTextureMethod GetCopyTextureCHROMIUMMethod(const FeatureInfo* feature_info,
+                                               GLenum source_target,
+                                               GLint source_level,
+                                               GLenum source_internal_format,
+                                               GLenum source_type,
+                                               GLenum dest_target,
+                                               GLint dest_level,
+                                               GLenum dest_internal_format,
+                                               bool flip_y,
+                                               bool premultiply_alpha,
+                                               bool unpremultiply_alpha,
+                                               bool dither);
+
 }  // namespace gles2
 }  // namespace gpu
 

gpu/command_buffer/service/gles2_cmd_apply_framebuffer_attachment_cmaa_intel.cc

@@ -244,7 +244,7 @@ void ApplyFramebufferAttachmentCMAAINTELResourceManager::
         ApplyCMAAEffectTexture(source_texture, rgba8_texture_, do_copy);
 
         // Source format for DoCopySubTexture is always GL_RGBA8.
-        CopyTextureMethod method = DIRECT_COPY;
+        CopyTextureMethod method = CopyTextureMethod::DIRECT_COPY;
         bool copy_tex_image_format_valid =
             !GLES2Util::IsIntegerFormat(internal_format) &&
             GLES2Util::GetColorEncodingFromInternalFormat(internal_format) !=
@@ -260,7 +260,7 @@ void ApplyFramebufferAttachmentCMAAINTELResourceManager::
           }
         }
         if (!copy_tex_image_format_valid)
-          method = DIRECT_DRAW;
+          method = CopyTextureMethod::DIRECT_DRAW;
         bool color_renderable =
             Texture::ColorRenderable(decoder->GetFeatureInfo(), internal_format,
                                      texture->texture()->IsImmutable());
@@ -270,10 +270,10 @@ void ApplyFramebufferAttachmentCMAAINTELResourceManager::
         // TODO(dshwang): After Mesa fixes this issue, remove this hack.
         // https://bugs.freedesktop.org/show_bug.cgi?id=98478, crbug.com/535198.
         if (color_renderable)
-          method = DIRECT_DRAW;
+          method = CopyTextureMethod::DIRECT_DRAW;
 #endif
-        if (method == DIRECT_DRAW && !color_renderable)
-          method = DRAW_AND_COPY;
+        if (method == CopyTextureMethod::DIRECT_DRAW && !color_renderable)
+          method = CopyTextureMethod::DRAW_AND_COPY;
 
         // LUMINANCE, LUMINANCE_ALPHA and ALPHA textures aren't
         // renderable, so we don't need to pass in the luma emulation

gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h

@@ -10,7 +10,6 @@
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "gpu/command_buffer/service/feature_info.h"
-#include "gpu/command_buffer/service/gl_utils.h"
 #include "gpu/gpu_gles2_export.h"
 
 namespace gpu {
@@ -21,7 +20,7 @@ namespace gles2 {
 
 class CopyTexImageResourceManager;
 
-enum CopyTextureMethod {
+enum class CopyTextureMethod {
   // Use CopyTex{Sub}Image2D to copy from the source to the destination.
   DIRECT_COPY,
   // Draw from the source to the destination texture.
@@ -48,58 +47,36 @@ enum CopyTextureMethod {
 // The target of |dest_id| texture must be GL_TEXTURE_2D.
 class GPU_GLES2_EXPORT CopyTextureCHROMIUMResourceManager {
  public:
-  CopyTextureCHROMIUMResourceManager();
-  ~CopyTextureCHROMIUMResourceManager();
-
-  void Initialize(const DecoderContext* decoder,
-                  const gles2::FeatureInfo::FeatureFlags& feature_flags);
-  void Destroy();
-
-  void DoCopyTexture(const DecoderContext* decoder,
-                     GLenum source_target,
-                     GLuint source_id,
-                     GLint source_level,
-                     GLenum source_internal_format,
-                     GLenum dest_target,
-                     GLuint dest_id,
-                     GLint dest_level,
-                     GLenum dest_internal_format,
-                     GLsizei width,
-                     GLsizei height,
-                     bool flip_y,
-                     bool premultiply_alpha,
-                     bool unpremultiply_alpha,
-                     bool dither,
-                     CopyTextureMethod method,
-                     CopyTexImageResourceManager* luma_emulation_blitter);
-
-  void DoCopySubTexture(const DecoderContext* decoder,
-                        GLenum source_target,
-                        GLuint source_id,
-                        GLint source_level,
-                        GLenum source_internal_format,
-                        GLenum dest_target,
-                        GLuint dest_id,
-                        GLint dest_level,
-                        GLenum dest_internal_format,
-                        GLint xoffset,
-                        GLint yoffset,
-                        GLint x,
-                        GLint y,
-                        GLsizei width,
-                        GLsizei height,
-                        GLsizei dest_width,
-                        GLsizei dest_height,
-                        GLsizei source_width,
-                        GLsizei source_height,
-                        bool flip_y,
-                        bool premultiply_alpha,
-                        bool unpremultiply_alpha,
-                        bool dither,
-                        CopyTextureMethod method,
-                        CopyTexImageResourceManager* luma_emulation_blitter);
-
-  void DoCopySubTextureWithTransform(
+  virtual ~CopyTextureCHROMIUMResourceManager();
+
+  // Factory generating a real implementation.
+  static CopyTextureCHROMIUMResourceManager* Create();
+
+  virtual void Initialize(
+      const DecoderContext* decoder,
+      const gles2::FeatureInfo::FeatureFlags& feature_flags) = 0;
+  virtual void Destroy() = 0;
+
+  virtual void DoCopyTexture(
+      const DecoderContext* decoder,
+      GLenum source_target,
+      GLuint source_id,
+      GLint source_level,
+      GLenum source_internal_format,
+      GLenum dest_target,
+      GLuint dest_id,
+      GLint dest_level,
+      GLenum dest_internal_format,
+      GLsizei width,
+      GLsizei height,
+      bool flip_y,
+      bool premultiply_alpha,
+      bool unpremultiply_alpha,
+      bool dither,
+      CopyTextureMethod method,
+      CopyTexImageResourceManager* luma_emulation_blitter) = 0;
+
+  virtual void DoCopySubTexture(
       const DecoderContext* decoder,
       GLenum source_target,
       GLuint source_id,
@@ -123,63 +100,41 @@ class GPU_GLES2_EXPORT CopyTextureCHROMIUMResourceManager {
       bool premultiply_alpha,
       bool unpremultiply_alpha,
       bool dither,
-      const GLfloat transform_matrix[16],
-      CopyTexImageResourceManager* luma_emulation_blitter);
+      CopyTextureMethod method,
+      CopyTexImageResourceManager* luma_emulation_blitter) = 0;
 
-  // This will apply a transform on the texture coordinates before sampling
-  // the source texture and copying to the destination texture. The transform
-  // matrix should be given in column-major form, so it can be passed
-  // directly to GL.
-  void DoCopyTextureWithTransform(
+  virtual void DoCopySubTextureWithTransform(
       const DecoderContext* decoder,
       GLenum source_target,
       GLuint source_id,
       GLint source_level,
-      GLenum source_format,
+      GLenum source_internal_format,
       GLenum dest_target,
       GLuint dest_id,
       GLint dest_level,
-      GLenum dest_format,
+      GLenum dest_internal_format,
+      GLint xoffset,
+      GLint yoffset,
+      GLint x,
+      GLint y,
       GLsizei width,
       GLsizei height,
+      GLsizei dest_width,
+      GLsizei dest_height,
+      GLsizei source_width,
+      GLsizei source_height,
       bool flip_y,
       bool premultiply_alpha,
       bool unpremultiply_alpha,
       bool dither,
       const GLfloat transform_matrix[16],
-      CopyTexImageResourceManager* luma_emulation_blitter);
+      CopyTexImageResourceManager* luma_emulation_blitter) = 0;
 
-  // The attributes used during invocation of the extension.
-  static const GLuint kVertexPositionAttrib = 0;
-
- private:
-  struct ProgramInfo {
-    ProgramInfo()
-        : program(0u),
-          vertex_dest_mult_handle(0u),
-          vertex_dest_add_handle(0u),
-          vertex_source_mult_handle(0u),
-          vertex_source_add_handle(0u),
-          tex_coord_transform_handle(0u),
-          sampler_handle(0u) {}
-
-    GLuint program;
-
-    // Transformations that map from the original quad coordinates [-1, 1] into
-    // the destination texture's quad coordinates.
-    GLuint vertex_dest_mult_handle;
-    GLuint vertex_dest_add_handle;
-
-    // Transformations that map from the original quad coordinates [-1, 1] into
-    // the source texture's texture coordinates.
-    GLuint vertex_source_mult_handle;
-    GLuint vertex_source_add_handle;
-
-    GLuint tex_coord_transform_handle;
-    GLuint sampler_handle;
-  };
-
-  void DoCopyTextureInternal(
+  // This will apply a transform on the texture coordinates before sampling
+  // the source texture and copying to the destination texture. The transform
+  // matrix should be given in column-major form, so it can be passed
+  // directly to GL.
+  virtual void DoCopyTextureWithTransform(
       const DecoderContext* decoder,
       GLenum source_target,
       GLuint source_id,
@@ -189,35 +144,22 @@ class GPU_GLES2_EXPORT CopyTextureCHROMIUMResourceManager {
       GLuint dest_id,
       GLint dest_level,
       GLenum dest_format,
-      GLint xoffset,
-      GLint yoffset,
-      GLint x,
-      GLint y,
       GLsizei width,
       GLsizei height,
-      GLsizei dest_width,
-      GLsizei dest_height,
-      GLsizei source_width,
-      GLsizei source_height,
       bool flip_y,
       bool premultiply_alpha,
       bool unpremultiply_alpha,
       bool dither,
       const GLfloat transform_matrix[16],
-      CopyTexImageResourceManager* luma_emulation_blitter);
-
-  bool initialized_;
-  bool nv_egl_stream_consumer_external_;
-  typedef std::vector<GLuint> ShaderVector;
-  ShaderVector vertex_shaders_;
-  ShaderVector fragment_shaders_;
-  typedef int ProgramMapKey;
-  typedef base::hash_map<ProgramMapKey, ProgramInfo> ProgramMap;
-  ProgramMap programs_;
-  GLuint vertex_array_object_id_;
-  GLuint buffer_id_;
-  GLuint framebuffer_;
+      CopyTexImageResourceManager* luma_emulation_blitter) = 0;
+
+  // The attributes used during invocation of the extension.
+  static const GLuint kVertexPositionAttrib = 0;
 
+ protected:
+  CopyTextureCHROMIUMResourceManager();
+
+ private:
   DISALLOW_COPY_AND_ASSIGN(CopyTextureCHROMIUMResourceManager);
 };
 

gpu/command_buffer/service/gles2_cmd_decoder.h

@@ -43,6 +43,7 @@ class ServiceTransferCache;
 namespace gles2 {
 
 class ContextGroup;
+class CopyTextureCHROMIUMResourceManager;
 class FramebufferManager;
 class GLES2Util;
 class ImageManager;
@@ -185,6 +186,9 @@ class GPU_GLES2_EXPORT GLES2Decoder : public CommonDecoder,
   virtual scoped_refptr<ShaderTranslatorInterface> GetTranslator(
       unsigned int type) = 0;
 
+  virtual void SetCopyTextureResourceManagerForTest(
+      CopyTextureCHROMIUMResourceManager* copy_texture_resource_manager) = 0;
+
  protected:
   GLES2Decoder(CommandBufferServiceBase* command_buffer_service,
                Outputter* outputter);

gpu/command_buffer/service/gles2_cmd_decoder_mock.h

@@ -160,6 +160,9 @@ class MockGLES2Decoder : public GLES2Decoder {
                     uint32_t texture_target,
                     gl::GLImage* image,
                     bool can_bind_to_sampler));
+  MOCK_METHOD1(
+      SetCopyTextureResourceManagerForTest,
+      void(CopyTextureCHROMIUMResourceManager* copy_texture_resource_manager));
 
  private:
   base::WeakPtrFactory<MockGLES2Decoder> weak_ptr_factory_;

gpu/command_buffer/service/gles2_cmd_decoder_passthrough.cc

@@ -1488,6 +1488,11 @@ void GLES2DecoderPassthroughImpl::OnDebugMessage(GLenum source,
   }
 }
 
+void GLES2DecoderPassthroughImpl::SetCopyTextureResourceManagerForTest(
+    CopyTextureCHROMIUMResourceManager* copy_texture_resource_manager) {
+  NOTIMPLEMENTED();
+}
+
 const char* GLES2DecoderPassthroughImpl::GetCommandName(
     unsigned int command_id) const {
   if (command_id >= kFirstGLES2Command && command_id < kNumCommands) {

gpu/command_buffer/service/gles2_cmd_decoder_passthrough.h

@@ -312,6 +312,10 @@ class GPU_GLES2_EXPORT GLES2DecoderPassthroughImpl : public GLES2Decoder {
                       GLsizei length,
                       const GLchar* message);
 
+  void SetCopyTextureResourceManagerForTest(
+      CopyTextureCHROMIUMResourceManager* copy_texture_resource_manager)
+      override;
+
  private:
   // Allow unittests to inspect internal state tracking
   friend class GLES2DecoderPassthroughTestBase;

gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc

@@ -18,6 +18,7 @@
 #include "gpu/command_buffer/common/gles2_cmd_format.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/command_buffer/service/context_group.h"
+#include "gpu/command_buffer/service/copy_texture_chromium_mock.h"
 #include "gpu/command_buffer/service/gpu_switches.h"
 #include "gpu/command_buffer/service/logger.h"
 #include "gpu/command_buffer/service/mailbox_manager.h"
@@ -498,6 +499,10 @@ void GLES2DecoderTestBase::InitDecoderWithWorkarounds(
                                       &outputter_, group_.get()));
   decoder_->SetIgnoreCachedStateForTest(ignore_cached_state_for_test_);
   decoder_->GetLogger()->set_log_synthesized_gl_errors(false);
+
+  copy_texture_manager_ = new MockCopyTextureResourceManager();
+  decoder_->SetCopyTextureResourceManagerForTest(copy_texture_manager_);
+
   ASSERT_EQ(decoder_->Initialize(surface_, context_, false,
                                  DisallowedFeatures(), attribs),
             gpu::ContextResult::kSuccess);
@@ -583,6 +588,14 @@ void GLES2DecoderTestBase::ResetDecoder() {
   }
 
   decoder_->EndDecoding();
+
+  if (!decoder_->WasContextLost()) {
+    EXPECT_CALL(*copy_texture_manager_, Destroy())
+        .Times(1)
+        .RetiresOnSaturation();
+    copy_texture_manager_ = nullptr;
+  }
+
   decoder_->Destroy(!decoder_->WasContextLost());
   decoder_.reset();
   group_->Destroy(mock_decoder_.get(), false);

gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.h

@@ -47,6 +47,7 @@ namespace gpu {
 namespace gles2 {
 
 class MemoryTracker;
+class MockCopyTextureResourceManager;
 
 class GLES2DecoderTestBase : public ::testing::TestWithParam<bool>,
                              public DecoderClient {
@@ -797,6 +798,8 @@ class GLES2DecoderTestBase : public ::testing::TestWithParam<bool>,
   scoped_refptr<ContextGroup> group_;
   MockGLStates gl_states_;
   base::MessageLoop message_loop_;
+
+  MockCopyTextureResourceManager* copy_texture_manager_;  // not owned
 };
 
 class GLES2DecoderWithShaderTestBase : public GLES2DecoderTestBase {