// 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 "gpu/command_buffer/common/gles2_cmd_format.h"
#include "gpu/command_buffer/common/gles2_cmd_utils.h"
#include "gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.h"
#include "gpu/command_buffer/service/cmd_buffer_engine.h"
#include "gpu/command_buffer/service/context_group.h"
#include "gpu/command_buffer/service/program_manager.h"
#include "gpu/command_buffer/service/test_helper.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gl/gl_mock.h"

using ::gfx::MockGLInterface;
using ::testing::_;
using ::testing::DoAll;
using ::testing::InSequence;
using ::testing::MatcherCast;
using ::testing::Pointee;
using ::testing::Return;
using ::testing::SetArrayArgument;
using ::testing::SetArgumentPointee;
using ::testing::StrEq;

namespace gpu {
namespace gles2 {

namespace {
void ShaderCacheCb(const std::string& key, const std::string& shader) {
}
}  // namespace

class GLES2DecoderTest1 : public GLES2DecoderTestBase {
 public:
  GLES2DecoderTest1() { }
};

INSTANTIATE_TEST_CASE_P(Service, GLES2DecoderTest1, ::testing::Bool());

template <>
void GLES2DecoderTestBase::SpecializedSetup<cmds::GenerateMipmap, 0>(
    bool valid) {
  DoBindTexture(GL_TEXTURE_2D, client_texture_id_, kServiceTextureId);
  DoTexImage2D(
      GL_TEXTURE_2D, 0, GL_RGBA, 16, 16, 0, GL_RGBA, GL_UNSIGNED_BYTE,
      kSharedMemoryId, kSharedMemoryOffset);
  if (valid) {
    EXPECT_CALL(*gl_, GetError())
        .WillOnce(Return(GL_NO_ERROR))
        .WillOnce(Return(GL_NO_ERROR))
        .RetiresOnSaturation();
  }
};

template <>
void GLES2DecoderTestBase::SpecializedSetup<cmds::CheckFramebufferStatus, 0>(
    bool /* valid */) {
  // Give it a valid framebuffer.
  DoBindRenderbuffer(GL_RENDERBUFFER, client_renderbuffer_id_,
                    kServiceRenderbufferId);
  DoBindFramebuffer(GL_FRAMEBUFFER, client_framebuffer_id_,
                    kServiceFramebufferId);
  DoRenderbufferStorage(
      GL_RENDERBUFFER, GL_RGBA4, GL_RGBA, 1, 1, GL_NO_ERROR);
  DoFramebufferRenderbuffer(
      GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER,
      client_renderbuffer_id_, kServiceRenderbufferId, GL_NO_ERROR);
};

template <>
void GLES2DecoderTestBase::SpecializedSetup<cmds::Clear, 0>(bool valid) {
  if (valid) {
    SetupExpectationsForApplyingDefaultDirtyState();
  }
};

template <>
void GLES2DecoderTestBase::SpecializedSetup<cmds::ColorMask, 0>(
    bool /* valid */) {
  // We bind a framebuffer color the colormask test since the framebuffer
  // will be considered RGB.
  DoBindFramebuffer(GL_FRAMEBUFFER, client_framebuffer_id_,
                    kServiceFramebufferId);
};

template <>
void GLES2DecoderTestBase::SpecializedSetup<cmds::CopyTexImage2D, 0>(
    bool valid) {
  if (valid) {
    EXPECT_CALL(*gl_, GetError())
        .WillOnce(Return(GL_NO_ERROR))
        .WillOnce(Return(GL_NO_ERROR))
        .RetiresOnSaturation();
  }
};

template <>
void GLES2DecoderTestBase::SpecializedSetup<cmds::CopyTexSubImage2D, 0>(
    bool valid) {
  if (valid) {
    DoBindTexture(GL_TEXTURE_2D, client_texture_id_, kServiceTextureId);
    DoTexImage2D(
        GL_TEXTURE_2D, 2, GL_RGBA, 16, 16, 0, GL_RGBA, GL_UNSIGNED_BYTE,
        kSharedMemoryId, kSharedMemoryOffset);
  }
};

template <>
void GLES2DecoderTestBase::SpecializedSetup<cmds::DetachShader, 0>(bool valid) {
  if (valid) {
    EXPECT_CALL(*gl_,
                AttachShader(kServiceProgramId, kServiceShaderId))
        .Times(1)
        .RetiresOnSaturation();
    cmds::AttachShader attach_cmd;
    attach_cmd.Init(client_program_id_, client_shader_id_);
    EXPECT_EQ(error::kNoError, ExecuteCmd(attach_cmd));
  }
};

template <>
void GLES2DecoderTestBase::SpecializedSetup<cmds::FramebufferRenderbuffer, 0>(
    bool valid) {
  DoBindFramebuffer(GL_FRAMEBUFFER, client_framebuffer_id_,
                    kServiceFramebufferId);
  if (valid) {
    EXPECT_CALL(*gl_, GetError())
        .WillOnce(Return(GL_NO_ERROR))
        .WillOnce(Return(GL_NO_ERROR))
        .RetiresOnSaturation();
  }
};

template <>
void GLES2DecoderTestBase::SpecializedSetup<cmds::FramebufferTexture2D, 0>(
    bool valid) {
  DoBindFramebuffer(GL_FRAMEBUFFER, client_framebuffer_id_,
                    kServiceFramebufferId);
  if (valid) {
    EXPECT_CALL(*gl_, GetError())
        .WillOnce(Return(GL_NO_ERROR))
        .WillOnce(Return(GL_NO_ERROR))
        .RetiresOnSaturation();
  }
};

template <>
void GLES2DecoderTestBase::SpecializedSetup<
    cmds::GetBufferParameteriv, 0>(bool /* valid */) {
  DoBindBuffer(GL_ARRAY_BUFFER, client_buffer_id_, kServiceBufferId);
};

template <>
void GLES2DecoderTestBase::SpecializedSetup<
    cmds::GetFramebufferAttachmentParameteriv, 0>(bool /* valid */) {
  DoBindFramebuffer(GL_FRAMEBUFFER, client_framebuffer_id_,
                    kServiceFramebufferId);
};

template <>
void GLES2DecoderTestBase::SpecializedSetup<
    cmds::GetRenderbufferParameteriv, 0>(
        bool /* valid */) {
  DoBindRenderbuffer(GL_RENDERBUFFER, client_renderbuffer_id_,
                    kServiceRenderbufferId);
};

template <>
void GLES2DecoderTestBase::SpecializedSetup<cmds::GetProgramiv, 0>(
    bool valid) {
  if (valid) {
    // GetProgramiv calls ClearGLError then GetError to make sure
    // it actually got a value so it can report correctly to the client.
    EXPECT_CALL(*gl_, GetError())
        .WillOnce(Return(GL_NO_ERROR))
        .RetiresOnSaturation();
    EXPECT_CALL(*gl_, GetError())
        .WillOnce(Return(GL_NO_ERROR))
        .RetiresOnSaturation();
  }
}

template <>
void GLES2DecoderTestBase::SpecializedSetup<cmds::GetProgramInfoLog, 0>(
    bool /* valid */) {
  const GLuint kClientVertexShaderId = 5001;
  const GLuint kServiceVertexShaderId = 6001;
  const GLuint kClientFragmentShaderId = 5002;
  const GLuint kServiceFragmentShaderId = 6002;
  const char* log = "hello";  // Matches auto-generated unit test.
  DoCreateShader(
      GL_VERTEX_SHADER, kClientVertexShaderId, kServiceVertexShaderId);
  DoCreateShader(
      GL_FRAGMENT_SHADER, kClientFragmentShaderId, kServiceFragmentShaderId);

  TestHelper::SetShaderStates(
      gl_.get(), GetShader(kClientVertexShaderId), true);
  TestHelper::SetShaderStates(
      gl_.get(), GetShader(kClientFragmentShaderId), true);

  InSequence dummy;
  EXPECT_CALL(*gl_,
              AttachShader(kServiceProgramId, kServiceVertexShaderId))
      .Times(1)
      .RetiresOnSaturation();
  EXPECT_CALL(*gl_,
              AttachShader(kServiceProgramId, kServiceFragmentShaderId))
      .Times(1)
      .RetiresOnSaturation();
  EXPECT_CALL(*gl_, LinkProgram(kServiceProgramId))
      .Times(1)
      .RetiresOnSaturation();
  EXPECT_CALL(*gl_, GetProgramiv(kServiceProgramId, GL_LINK_STATUS, _))
      .WillOnce(SetArgumentPointee<2>(1));
  EXPECT_CALL(*gl_,
      GetProgramiv(kServiceProgramId, GL_INFO_LOG_LENGTH, _))
      .WillOnce(SetArgumentPointee<2>(strlen(log) + 1))
      .RetiresOnSaturation();
  EXPECT_CALL(*gl_,
      GetProgramInfoLog(kServiceProgramId, strlen(log) + 1, _, _))
      .WillOnce(DoAll(
          SetArgumentPointee<2>(strlen(log)),
          SetArrayArgument<3>(log, log + strlen(log) + 1)))
      .RetiresOnSaturation();
  EXPECT_CALL(*gl_, GetProgramiv(kServiceProgramId, GL_ACTIVE_ATTRIBUTES, _))
      .WillOnce(SetArgumentPointee<2>(0));
  EXPECT_CALL(
      *gl_,
      GetProgramiv(kServiceProgramId, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, _))
      .WillOnce(SetArgumentPointee<2>(0));
  EXPECT_CALL(*gl_, GetProgramiv(kServiceProgramId, GL_ACTIVE_UNIFORMS, _))
      .WillOnce(SetArgumentPointee<2>(0));
  EXPECT_CALL(
      *gl_,
      GetProgramiv(kServiceProgramId, GL_ACTIVE_UNIFORM_MAX_LENGTH, _))
      .WillOnce(SetArgumentPointee<2>(0));

  Program* program = GetProgram(client_program_id_);
  ASSERT_TRUE(program != NULL);

  cmds::AttachShader attach_cmd;
  attach_cmd.Init(client_program_id_, kClientVertexShaderId);
  EXPECT_EQ(error::kNoError, ExecuteCmd(attach_cmd));

  attach_cmd.Init(client_program_id_, kClientFragmentShaderId);
  EXPECT_EQ(error::kNoError, ExecuteCmd(attach_cmd));

  program->Link(NULL, Program::kCountOnlyStaticallyUsed,
                base::Bind(&ShaderCacheCb));
};

#include "gpu/command_buffer/service/gles2_cmd_decoder_unittest_1_autogen.h"

}  // namespace gles2
}  // namespace gpu