#include "fixtures/D3D12TestFixture.h"
#include <d3d12.h>
#include <dxgi1_4.h>
#include <windows.h>

TEST_F(D3D12TestFixture, Device_Create_Success) {
    ASSERT_NE(GetDevice(), nullptr);
}

TEST_F(D3D12TestFixture, Device_Get_CommandQueue) {
    ASSERT_NE(GetCommandQueue(), nullptr);
}

TEST_F(D3D12TestFixture, Device_Get_FeatureLevel) {
    static const D3D_FEATURE_LEVEL requestedLevels[] = { D3D_FEATURE_LEVEL_12_0 };
    D3D12_FEATURE_DATA_FEATURE_LEVELS featureLevels = {};
    featureLevels.NumFeatureLevels = 1;
    featureLevels.pFeatureLevelsRequested = requestedLevels;
    
    HRESULT hr = GetDevice()->CheckFeatureSupport(D3D12_FEATURE_FEATURE_LEVELS, &featureLevels, sizeof(featureLevels));
    ASSERT_HRESULT_SUCCEEDED(hr);
    EXPECT_EQ(featureLevels.MaxSupportedFeatureLevel, D3D_FEATURE_LEVEL_12_0);
}

TEST_F(D3D12TestFixture, Device_Get_DescriptorHandleIncrementSize) {
    UINT cbvSrvUavSize = GetDevice()->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
    EXPECT_GT(cbvSrvUavSize, 0);
    
    UINT samplerSize = GetDevice()->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER);
    EXPECT_GT(samplerSize, 0);
    
    UINT rtvSize = GetDevice()->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
    EXPECT_GT(rtvSize, 0);
    
    UINT dsvSize = GetDevice()->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_DSV);
    EXPECT_GT(dsvSize, 0);
}

TEST_F(D3D12TestFixture, Device_Get_ShaderModelSupport) {
    D3D12_FEATURE_DATA_SHADER_MODEL shaderModel = {};
    shaderModel.HighestShaderModel = D3D_SHADER_MODEL_6_0;
    
    HRESULT hr = GetDevice()->CheckFeatureSupport(D3D12_FEATURE_SHADER_MODEL, &shaderModel, sizeof(shaderModel));
    ASSERT_HRESULT_SUCCEEDED(hr);
    EXPECT_GE(shaderModel.HighestShaderModel, D3D_SHADER_MODEL_6_0);
}

TEST_F(D3D12TestFixture, Device_Get_ResourceBindingTier) {
    D3D12_FEATURE_DATA_D3D12_OPTIONS options = {};
    
    HRESULT hr = GetDevice()->CheckFeatureSupport(D3D12_FEATURE_D3D12_OPTIONS, &options, sizeof(options));
    ASSERT_HRESULT_SUCCEEDED(hr);
    EXPECT_GE(options.ResourceBindingTier, D3D12_RESOURCE_BINDING_TIER_1);
}

TEST_F(D3D12TestFixture, Device_Get_TiledResourcesTier) {
    D3D12_FEATURE_DATA_D3D12_OPTIONS options = {};
    
    HRESULT hr = GetDevice()->CheckFeatureSupport(D3D12_FEATURE_D3D12_OPTIONS, &options, sizeof(options));
    ASSERT_HRESULT_SUCCEEDED(hr);
    EXPECT_GE(options.TiledResourcesTier, D3D12_TILED_RESOURCES_TIER_NOT_SUPPORTED);
}