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/*
* Copyright (c) 2008-2016, NVIDIA CORPORATION. All rights reserved.
*
* NVIDIA CORPORATION and its licensors retain all intellectual property
* and proprietary rights in and to this software, related documentation
* and any modifications thereto. Any use, reproduction, disclosure or
* distribution of this software and related documentation without an express
* license agreement from NVIDIA CORPORATION is strictly prohibited.
*/
#pragma once
#include <D3D11.h>
#ifndef SAFE_RELEASE
#define SAFE_RELEASE(p) { if (p) { (p)->Release(); (p)=NULL; } }
#endif
struct SceneRTs
{
struct Desc
{
UINT OutputWidth;
UINT OutputHeight;
UINT BorderPixels;
UINT SampleCount;
};
SceneRTs(ID3D11Device* pDevice, Desc &desc)
: Width(desc.OutputWidth + 2 * desc.BorderPixels)
, Height(desc.OutputHeight + 2 * desc.BorderPixels)
, OutputWidth(desc.OutputWidth)
, OutputHeight(desc.OutputHeight)
, BorderPixels(desc.BorderPixels)
, SampleCount(desc.SampleCount)
{
CreateGBufferTextures(pDevice);
CreateOutputTexture(pDevice);
CreateDepthTexture(pDevice);
}
void CreateGBufferTextures(ID3D11Device* pDevice)
{
D3D11_TEXTURE2D_DESC texDesc;
texDesc.Width = Width;
texDesc.Height = Height;
texDesc.ArraySize = 1;
texDesc.MiscFlags = 0;
texDesc.MipLevels = 1;
texDesc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
texDesc.Usage = D3D11_USAGE_DEFAULT;
texDesc.CPUAccessFlags = NULL;
// Allocate MSAA color buffer
texDesc.SampleDesc.Count = SampleCount;
texDesc.SampleDesc.Quality = 0;
texDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
pDevice->CreateTexture2D(&texDesc, NULL, &ColorTexture);
pDevice->CreateRenderTargetView(ColorTexture, NULL, &ColorRTV);
pDevice->CreateShaderResourceView(ColorTexture, NULL, &ColorSRV);
// Allocate MSAA normal buffer
texDesc.Format = DXGI_FORMAT_R11G11B10_FLOAT;
pDevice->CreateTexture2D(&texDesc, NULL, &NormalTexture);
pDevice->CreateRenderTargetView(NormalTexture, NULL, &NormalRTV);
pDevice->CreateShaderResourceView(NormalTexture, NULL, &NormalSRV);
// Allocate non-MSAA color buffer
texDesc.SampleDesc.Count = 1;
texDesc.SampleDesc.Quality = 0;
texDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
pDevice->CreateTexture2D(&texDesc, NULL, &ResolvedColorTexture);
pDevice->CreateRenderTargetView(ColorTexture, NULL, &ResolvedColorRTV);
pDevice->CreateShaderResourceView(ColorTexture, NULL, &ResolvedColorSRV);
}
void CreateOutputTexture(ID3D11Device* pDevice)
{
D3D11_TEXTURE2D_DESC texDesc;
texDesc.Width = OutputWidth;
texDesc.Height = OutputHeight;
texDesc.ArraySize = 1;
texDesc.MiscFlags = 0;
texDesc.MipLevels = 1;
texDesc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
texDesc.Usage = D3D11_USAGE_DEFAULT;
texDesc.CPUAccessFlags = NULL;
texDesc.SampleDesc.Count = 1;
texDesc.SampleDesc.Quality = 0;
texDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
pDevice->CreateTexture2D(&texDesc, NULL, &OutputTexture);
pDevice->CreateRenderTargetView(OutputTexture, NULL, &OutputRTV);
pDevice->CreateShaderResourceView(OutputTexture, NULL, &OutputSRV);
}
void CreateDepthTexture(ID3D11Device* pDevice)
{
// Create a hardware-depth texture that can be fetched from a shader.
// To do so, use a TYPELESS format and set the D3D11_BIND_SHADER_RESOURCE flag.
// D3D10.0 did not allow creating such a depth texture with SampleCount > 1.
// This is now possible since D3D10.1.
D3D11_TEXTURE2D_DESC texDesc;
texDesc.ArraySize = 1;
texDesc.BindFlags = D3D11_BIND_DEPTH_STENCIL | D3D11_BIND_SHADER_RESOURCE;
texDesc.CPUAccessFlags = NULL;
texDesc.Width = Width;
texDesc.Height = Height;
texDesc.MipLevels = 1;
texDesc.MiscFlags = NULL;
texDesc.SampleDesc.Count = SampleCount;
texDesc.SampleDesc.Quality = 0;
texDesc.Usage = D3D11_USAGE_DEFAULT;
texDesc.Format = DXGI_FORMAT_R24G8_TYPELESS;
pDevice->CreateTexture2D(&texDesc, NULL, &DepthStencilTexture);
// Create a depth-stencil view
D3D11_DEPTH_STENCIL_VIEW_DESC dsvDesc;
dsvDesc.Format = DXGI_FORMAT_D24_UNORM_S8_UINT;
if (SampleCount > 1)
{
dsvDesc.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2DMS;
}
else
{
dsvDesc.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2D;
}
dsvDesc.Texture2D.MipSlice = 0;
dsvDesc.Flags = 0; // new in D3D11
pDevice->CreateDepthStencilView(DepthStencilTexture, &dsvDesc, &DepthStencilDSV);
// Create a shader resource view
D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
if (SampleCount > 1)
{
srvDesc.Format = DXGI_FORMAT_R24_UNORM_X8_TYPELESS;
srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2DMS;
}
else
{
srvDesc.Format = DXGI_FORMAT_R24_UNORM_X8_TYPELESS;
srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
srvDesc.Texture2D.MipLevels = 1;
srvDesc.Texture2D.MostDetailedMip = 0;
}
pDevice->CreateShaderResourceView(DepthStencilTexture, &srvDesc, &DepthStencilSRV);
}
~SceneRTs()
{
SAFE_RELEASE(ColorTexture);
SAFE_RELEASE(ColorRTV);
SAFE_RELEASE(ColorSRV);
SAFE_RELEASE(ResolvedColorTexture);
SAFE_RELEASE(ResolvedColorRTV);
SAFE_RELEASE(ResolvedColorSRV);
SAFE_RELEASE(NormalTexture);
SAFE_RELEASE(NormalRTV);
SAFE_RELEASE(NormalSRV);
SAFE_RELEASE(OutputTexture);
SAFE_RELEASE(OutputRTV);
SAFE_RELEASE(OutputSRV);
SAFE_RELEASE(DepthStencilTexture);
SAFE_RELEASE(DepthStencilSRV);
SAFE_RELEASE(DepthStencilDSV);
}
UINT Width;
UINT Height;
UINT OutputWidth;
UINT OutputHeight;
UINT BorderPixels;
UINT SampleCount;
ID3D11Texture2D* ColorTexture;
ID3D11RenderTargetView* ColorRTV;
ID3D11ShaderResourceView* ColorSRV;
ID3D11Texture2D* ResolvedColorTexture;
ID3D11RenderTargetView* ResolvedColorRTV;
ID3D11ShaderResourceView* ResolvedColorSRV;
ID3D11Texture2D* NormalTexture;
ID3D11RenderTargetView* NormalRTV;
ID3D11ShaderResourceView* NormalSRV;
ID3D11Texture2D* OutputTexture;
ID3D11RenderTargetView* OutputRTV;
ID3D11ShaderResourceView* OutputSRV;
ID3D11Texture2D* DepthStencilTexture;
ID3D11ShaderResourceView* DepthStencilSRV;
ID3D11DepthStencilView* DepthStencilDSV;
};
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