Allow textures to be moved from one GL context group to another.

gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
===================================================================
--- gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc	(revision 132415)
+++ gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc	(working copy)
@@ -6746,7 +6746,113 @@
   EXPECT_FALSE(query->pending());
 }
 
+TEST_F(GLES2DecoderTest, ProduceAndConsumeTexture) {

[Ken Russell (switch to Gerrit), 2012/04/23 20:12:00]

Need a test which verifies the functionality across two contexts.

+  const static GLint mailbox[32] = {
+    1, 2, 3
+  };
+  memcpy(shared_memory_address_, mailbox, sizeof(mailbox));
 
+  DoBindTexture(GL_TEXTURE_2D, client_texture_id_, kServiceTextureId);
+  DoTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 3, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE,
+               0, 0);
+  DoTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA, 2, 4, 0, GL_RGBA, GL_UNSIGNED_BYTE,
+               0, 0);
+  TextureManager::TextureInfo* info =
+      group().texture_manager()->GetTextureInfo(client_texture_id_);
+  EXPECT_EQ(kServiceTextureId, info->service_id());
+
+  // Assigns and binds new service side texture ID and applies the texture
+  // objects' state to it.
+  EXPECT_CALL(*gl_, GenTextures(1, _))
+      .WillOnce(SetArgumentPointee<1>(kNewServiceId))
+      .RetiresOnSaturation();
+  EXPECT_CALL(*gl_, BindTexture(GL_TEXTURE_2D, kNewServiceId))
+      .Times(1)
+      .RetiresOnSaturation();
+  EXPECT_CALL(*gl_, TexParameteri(GL_TEXTURE_2D,
+                                  GL_TEXTURE_MIN_FILTER,
+                                  GL_NEAREST_MIPMAP_LINEAR));
+  EXPECT_CALL(*gl_, TexParameteri(GL_TEXTURE_2D,
+                                  GL_TEXTURE_MAG_FILTER,
+                                  GL_LINEAR));
+  EXPECT_CALL(*gl_, TexParameteri(GL_TEXTURE_2D,
+                                  GL_TEXTURE_WRAP_S,
+                                  GL_REPEAT));
+  EXPECT_CALL(*gl_, TexParameteri(GL_TEXTURE_2D,
+                                  GL_TEXTURE_WRAP_T,
+                                  GL_REPEAT));
+
+  ProduceTextureCHROMIUM produce_cmd;
+  produce_cmd.Init(GL_TEXTURE_2D, kSharedMemoryId, kSharedMemoryOffset);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(produce_cmd));
+
+  // Texture is zero-by-zero.
+  GLsizei width;
+  GLsizei height;
+  GLenum type;
+  GLenum internal_format;
+
+  EXPECT_TRUE(info->GetLevelSize(GL_TEXTURE_2D, 0, &width, &height));
+  EXPECT_EQ(0, width);
+  EXPECT_EQ(0, height);
+  EXPECT_TRUE(info->GetLevelType(GL_TEXTURE_2D, 0, &type, &internal_format));
+  EXPECT_EQ(GL_RGBA, internal_format);
+  EXPECT_EQ(GL_UNSIGNED_BYTE, type);
+
+  EXPECT_TRUE(info->GetLevelSize(GL_TEXTURE_2D, 1, &width, &height));
+  EXPECT_EQ(0, width);
+  EXPECT_EQ(0, height);
+  EXPECT_TRUE(info->GetLevelType(GL_TEXTURE_2D, 1, &type, &internal_format));
+  EXPECT_EQ(GL_RGBA, internal_format);
+  EXPECT_EQ(GL_UNSIGNED_BYTE, type);
+
+  // Service ID has changed.
+  EXPECT_EQ(kNewServiceId, info->service_id());
+
+  // Assigns and binds original service side texture ID and applies the texture
+  // objects' state to it.
+  EXPECT_CALL(*gl_, DeleteTextures(1, _))
+      .Times(1)
+      .RetiresOnSaturation();
+  EXPECT_CALL(*gl_, BindTexture(GL_TEXTURE_2D, kServiceTextureId))
+      .Times(1)
+      .RetiresOnSaturation();
+  EXPECT_CALL(*gl_, TexParameteri(GL_TEXTURE_2D,
+                                  GL_TEXTURE_MIN_FILTER,
+                                  GL_NEAREST_MIPMAP_LINEAR));
+  EXPECT_CALL(*gl_, TexParameteri(GL_TEXTURE_2D,
+                                  GL_TEXTURE_MAG_FILTER,
+                                  GL_LINEAR));
+  EXPECT_CALL(*gl_, TexParameteri(GL_TEXTURE_2D,
+                                  GL_TEXTURE_WRAP_S,
+                                  GL_REPEAT));
+  EXPECT_CALL(*gl_, TexParameteri(GL_TEXTURE_2D,
+                                  GL_TEXTURE_WRAP_T,
+                                  GL_REPEAT));
+
+  ConsumeTextureCHROMIUM consume_cmd;
+  consume_cmd.Init(GL_TEXTURE_2D, kSharedMemoryId, kSharedMemoryOffset);
+  EXPECT_EQ(error::kNoError, ExecuteCmd(consume_cmd));
+
+  // Texture is redefined.
+  EXPECT_TRUE(info->GetLevelSize(GL_TEXTURE_2D, 0, &width, &height));
+  EXPECT_EQ(3, width);
+  EXPECT_EQ(1, height);
+  EXPECT_TRUE(info->GetLevelType(GL_TEXTURE_2D, 0, &type, &internal_format));
+  EXPECT_EQ(GL_RGBA, internal_format);
+  EXPECT_EQ(GL_UNSIGNED_BYTE, type);
+
+  EXPECT_TRUE(info->GetLevelSize(GL_TEXTURE_2D, 1, &width, &height));
+  EXPECT_EQ(2, width);
+  EXPECT_EQ(4, height);
+  EXPECT_TRUE(info->GetLevelType(GL_TEXTURE_2D, 1, &type, &internal_format));
+  EXPECT_EQ(GL_RGBA, internal_format);
+  EXPECT_EQ(GL_UNSIGNED_BYTE, type);
+
+  // Service ID is restored.
+  EXPECT_EQ(kServiceTextureId, info->service_id());
+}
+
 // TODO(gman): Complete this test.
 // TEST_F(GLES2DecoderTest, CompressedTexImage2DGLError) {
 // }