#include "framework.h"
#include "RenderTarget2D.h"
#include "Utils.h"
using T5M::Renderer::Utils::throwIfFailed;
RenderTarget2D::RenderTarget2D(ID3D11Device* device, int w, int h, DXGI_FORMAT format)
{

	D3D11_TEXTURE2D_DESC desc = {};
	desc.Width = w;
	desc.Height = h;
	desc.MipLevels = 1;
	desc.ArraySize = 1;
	desc.Format = format;
	desc.SampleDesc.Count = 1;
	desc.SampleDesc.Quality = 0;
	desc.Usage = D3D11_USAGE_DEFAULT;
	desc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
	desc.CPUAccessFlags = 0;
	desc.MiscFlags = 0;

	HRESULT res = device->CreateTexture2D(&desc, NULL, &Texture);
	throwIfFailed(res);

	D3D11_RENDER_TARGET_VIEW_DESC viewDesc;
	viewDesc.Format = desc.Format;
	viewDesc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D;
	viewDesc.Texture2D.MipSlice = 0;

	res = device->CreateRenderTargetView(Texture.Get(), &viewDesc, &RenderTargetView);
	throwIfFailed(res);

	// Setup the description of the shader resource view.
	D3D11_SHADER_RESOURCE_VIEW_DESC shaderDesc;
	shaderDesc.Format = desc.Format;
	shaderDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
	shaderDesc.Texture2D.MostDetailedMip = 0;
	shaderDesc.Texture2D.MipLevels = 1;

	res = device->CreateShaderResourceView(Texture.Get(), &shaderDesc, &ShaderResourceView);
	throwIfFailed(res);

	D3D11_TEXTURE2D_DESC depthTexDesc = {};
	depthTexDesc.Width = w;
	depthTexDesc.Height = h;
	depthTexDesc.MipLevels = 1;
	depthTexDesc.ArraySize = 1;
	depthTexDesc.SampleDesc.Count = 1;
	depthTexDesc.SampleDesc.Quality = 0;
	depthTexDesc.Format = DXGI_FORMAT_D24_UNORM_S8_UINT;
	depthTexDesc.Usage = D3D11_USAGE_DEFAULT;
	depthTexDesc.BindFlags = D3D11_BIND_DEPTH_STENCIL;
	depthTexDesc.CPUAccessFlags = 0;
	depthTexDesc.MiscFlags = 0;

	res = device->CreateTexture2D(&depthTexDesc, NULL, &DepthStencilTexture);
	throwIfFailed(res);

	D3D11_DEPTH_STENCIL_VIEW_DESC dsvDesc = {};
	dsvDesc.Format = depthTexDesc.Format;
	dsvDesc.Flags = 0;
	dsvDesc.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2D;
	dsvDesc.Texture2D.MipSlice = 0;

	res = device->CreateDepthStencilView(DepthStencilTexture.Get(), &dsvDesc, &DepthStencilView);
	throwIfFailed(res);
}