// Copyright (c) 2013 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 "base/command_line.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "gpu/config/gpu_control_list_jsons.h"
#include "gpu/config/gpu_driver_bug_list.h"
#include "gpu/config/gpu_driver_bug_workaround_type.h"
#include "gpu/config/gpu_info.h"
#include "testing/gtest/include/gtest/gtest.h"

#define LONG_STRING_CONST(...) #__VA_ARGS__

namespace gpu {

class GpuDriverBugListTest : public testing::Test {
 public:
  GpuDriverBugListTest() { }

  ~GpuDriverBugListTest() override {}

  const GPUInfo& gpu_info() const {
    return gpu_info_;
  }

 protected:
  void SetUp() override {
    gpu_info_.gpu.vendor_id = 0x10de;
    gpu_info_.gpu.device_id = 0x0640;
    gpu_info_.driver_vendor = "NVIDIA";
    gpu_info_.driver_version = "1.6.18";
    gpu_info_.driver_date = "7-14-2009";
    gpu_info_.machine_model_name = "MacBookPro";
    gpu_info_.machine_model_version = "7.1";
    gpu_info_.gl_vendor = "NVIDIA Corporation";
    gpu_info_.gl_renderer = "NVIDIA GeForce GT 120 OpenGL Engine";
  }

  void TearDown() override {}

 private:
  GPUInfo gpu_info_;
};

TEST_F(GpuDriverBugListTest, CurrentDriverBugListValidation) {
  scoped_ptr<GpuDriverBugList> list(GpuDriverBugList::Create());
  std::string json;
  EXPECT_TRUE(list->LoadList(kGpuDriverBugListJson, GpuControlList::kAllOs));
}

TEST_F(GpuDriverBugListTest, CurrentListForARM) {
  scoped_ptr<GpuDriverBugList> list(GpuDriverBugList::Create());
  EXPECT_TRUE(list->LoadList(kGpuDriverBugListJson, GpuControlList::kAllOs));

  GPUInfo gpu_info;
  gpu_info.gl_vendor = "ARM";
  gpu_info.gl_renderer = "MALi_T604";
  std::set<int> bugs = list->MakeDecision(
      GpuControlList::kOsAndroid, "4.1", gpu_info);
  EXPECT_EQ(1u, bugs.count(USE_CLIENT_SIDE_ARRAYS_FOR_STREAM_BUFFERS));
}

TEST_F(GpuDriverBugListTest, CurrentListForImagination) {
  scoped_ptr<GpuDriverBugList> list(GpuDriverBugList::Create());
  EXPECT_TRUE(list->LoadList(kGpuDriverBugListJson, GpuControlList::kAllOs));

  GPUInfo gpu_info;
  gpu_info.gl_vendor = "Imagination Technologies";
  gpu_info.gl_renderer = "PowerVR SGX 540";
  std::set<int> bugs = list->MakeDecision(
      GpuControlList::kOsAndroid, "4.1", gpu_info);
  EXPECT_EQ(1u, bugs.count(USE_CLIENT_SIDE_ARRAYS_FOR_STREAM_BUFFERS));
}

TEST_F(GpuDriverBugListTest, GpuSwitching) {
  const std::string json = LONG_STRING_CONST(
      {
        "name": "gpu driver bug list",
        "version": "0.1",
        "entries": [
          {
            "id": 1,
            "os": {
              "type": "macosx"
            },
            "features": [
              "force_discrete_gpu"
            ]
          },
          {
            "id": 2,
            "os": {
              "type": "win"
            },
            "features": [
              "force_integrated_gpu"
            ]
          }
        ]
      }
  );
  scoped_ptr<GpuDriverBugList> driver_bug_list(GpuDriverBugList::Create());
  EXPECT_TRUE(driver_bug_list->LoadList(json, GpuControlList::kAllOs));
  std::set<int> switching = driver_bug_list->MakeDecision(
      GpuControlList::kOsMacosx, "10.8", gpu_info());
  EXPECT_EQ(1u, switching.size());
  EXPECT_EQ(1u, switching.count(FORCE_DISCRETE_GPU));
  std::vector<uint32> entries;
  driver_bug_list->GetDecisionEntries(&entries, false);
  ASSERT_EQ(1u, entries.size());
  EXPECT_EQ(1u, entries[0]);

  driver_bug_list.reset(GpuDriverBugList::Create());
  EXPECT_TRUE(driver_bug_list->LoadList(json, GpuControlList::kAllOs));
  switching = driver_bug_list->MakeDecision(
      GpuControlList::kOsWin, "6.1", gpu_info());
  EXPECT_EQ(1u, switching.size());
  EXPECT_EQ(1u, switching.count(FORCE_INTEGRATED_GPU));
  driver_bug_list->GetDecisionEntries(&entries, false);
  ASSERT_EQ(1u, entries.size());
  EXPECT_EQ(2u, entries[0]);
}

TEST_F(GpuDriverBugListTest, AppendSingleWorkaround) {
  base::CommandLine command_line(0, NULL);
  command_line.AppendSwitch(
      GpuDriverBugWorkaroundTypeToString(DISABLE_MULTISAMPLING));
  std::set<int> workarounds;
  workarounds.insert(EXIT_ON_CONTEXT_LOST);
  workarounds.insert(INIT_VERTEX_ATTRIBUTES);
  EXPECT_EQ(2u, workarounds.size());
  GpuDriverBugList::AppendWorkaroundsFromCommandLine(
      &workarounds, command_line);
  EXPECT_EQ(3u, workarounds.size());
  EXPECT_EQ(1u, workarounds.count(DISABLE_MULTISAMPLING));
}

TEST_F(GpuDriverBugListTest, AppendForceGPUWorkaround) {
  base::CommandLine command_line(0, NULL);
  command_line.AppendSwitch(
      GpuDriverBugWorkaroundTypeToString(FORCE_DISCRETE_GPU));
  std::set<int> workarounds;
  workarounds.insert(EXIT_ON_CONTEXT_LOST);
  workarounds.insert(FORCE_INTEGRATED_GPU);
  EXPECT_EQ(2u, workarounds.size());
  EXPECT_EQ(1u, workarounds.count(FORCE_INTEGRATED_GPU));
  GpuDriverBugList::AppendWorkaroundsFromCommandLine(
      &workarounds, command_line);
  EXPECT_EQ(2u, workarounds.size());
  EXPECT_EQ(0u, workarounds.count(FORCE_INTEGRATED_GPU));
  EXPECT_EQ(1u, workarounds.count(FORCE_DISCRETE_GPU));
}

TEST_F(GpuDriverBugListTest, NVIDIANumberingScheme) {
  const std::string json = LONG_STRING_CONST(
      {
        "name": "gpu driver bug list",
        "version": "0.1",
        "entries": [
          {
            "id": 1,
            "os": {
              "type": "win"
            },
            "vendor_id": "0x10de",
            "driver_version": {
              "op": "<=",
              "value": "8.17.12.6973"
            },
            "features": [
              "disable_d3d11"
            ]
          }
        ]
      }
  );

  scoped_ptr<GpuDriverBugList> list(GpuDriverBugList::Create());
  EXPECT_TRUE(list->LoadList(json, GpuControlList::kAllOs));

  GPUInfo gpu_info;
  gpu_info.gl_vendor = "NVIDIA";
  gpu_info.gl_renderer = "NVIDIA GeForce GT 120 OpenGL Engine";
  gpu_info.gpu.vendor_id = 0x10de;
  gpu_info.gpu.device_id = 0x0640;

  // test the same driver version number
  gpu_info.driver_version = "8.17.12.6973";
  std::set<int> bugs = list->MakeDecision(
      GpuControlList::kOsWin, "7.0", gpu_info);
  EXPECT_EQ(1u, bugs.count(DISABLE_D3D11));

  // test a lower driver version number
  gpu_info.driver_version = "8.15.11.8647";

  bugs = list->MakeDecision(GpuControlList::kOsWin, "7.0", gpu_info);
  EXPECT_EQ(1u, bugs.count(DISABLE_D3D11));

  // test a higher driver version number
  gpu_info.driver_version = "9.18.13.2723";
  bugs = list->MakeDecision(GpuControlList::kOsWin, "7.0", gpu_info);
  EXPECT_EQ(0u, bugs.count(DISABLE_D3D11));
}

}  // namespace gpu