#include "fixtures/D3D12TestFixture.h"

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

TEST_F(D3D12TestFixture, Views_CreateRTVDescriptorHeap) {
    D3D12_DESCRIPTOR_HEAP_DESC heapDesc = {};
    heapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
    heapDesc.NumDescriptors = 1;
    heapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
    
    ComPtr<ID3D12DescriptorHeap> descriptorHeap;
    HRESULT hr = GetDevice()->CreateDescriptorHeap(&heapDesc, IID_PPV_ARGS(&descriptorHeap));
    ASSERT_HRESULT_SUCCEEDED(hr);
    
    D3D12_CPU_DESCRIPTOR_HANDLE handle = descriptorHeap->GetCPUDescriptorHandleForHeapStart();
    EXPECT_NE(handle.ptr, 0);
}

TEST_F(D3D12TestFixture, Views_CreateDSVDescriptorHeap) {
    D3D12_DESCRIPTOR_HEAP_DESC heapDesc = {};
    heapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_DSV;
    heapDesc.NumDescriptors = 1;
    heapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
    
    ComPtr<ID3D12DescriptorHeap> descriptorHeap;
    HRESULT hr = GetDevice()->CreateDescriptorHeap(&heapDesc, IID_PPV_ARGS(&descriptorHeap));
    ASSERT_HRESULT_SUCCEEDED(hr);
    
    D3D12_CPU_DESCRIPTOR_HANDLE handle = descriptorHeap->GetCPUDescriptorHandleForHeapStart();
    EXPECT_NE(handle.ptr, 0);
}

TEST_F(D3D12TestFixture, Views_CreateCBVDescriptorHeap) {
    D3D12_DESCRIPTOR_HEAP_DESC heapDesc = {};
    heapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
    heapDesc.NumDescriptors = 1;
    heapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
    
    ComPtr<ID3D12DescriptorHeap> descriptorHeap;
    HRESULT hr = GetDevice()->CreateDescriptorHeap(&heapDesc, IID_PPV_ARGS(&descriptorHeap));
    ASSERT_HRESULT_SUCCEEDED(hr);
    
    D3D12_CPU_DESCRIPTOR_HANDLE handle = descriptorHeap->GetCPUDescriptorHandleForHeapStart();
    EXPECT_NE(handle.ptr, 0);
}

TEST_F(D3D12TestFixture, Views_RTVDescriptorHandleIncrement) {
    UINT rtvSize = GetDevice()->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
    
    D3D12_DESCRIPTOR_HEAP_DESC heapDesc = {};
    heapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
    heapDesc.NumDescriptors = 4;
    heapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
    
    ComPtr<ID3D12DescriptorHeap> descriptorHeap;
    HRESULT hr = GetDevice()->CreateDescriptorHeap(&heapDesc, IID_PPV_ARGS(&descriptorHeap));
    ASSERT_HRESULT_SUCCEEDED(hr);
    
    D3D12_CPU_DESCRIPTOR_HANDLE handle1 = descriptorHeap->GetCPUDescriptorHandleForHeapStart();
    D3D12_CPU_DESCRIPTOR_HANDLE handle2 = handle1;
    handle2.ptr += rtvSize;
    
    EXPECT_NE(handle1.ptr, handle2.ptr);
}