public override void GetMaterialGBufferDescription(HDRenderPipelineAsset asset, out GraphicsFormat[] RTFormat, out GBufferUsage[] gBufferUsage, out bool[] enableWrite)
{
int gBufferCount;
bool supportShadowMask;
bool supportLightLayers;
GetGBufferOptions(asset, out gBufferCount, out supportShadowMask, out supportLightLayers);
RTFormat = new GraphicsFormat[gBufferCount];
gBufferUsage = new GBufferUsage[gBufferCount];
enableWrite = new bool[gBufferCount];
RTFormat[0] = GraphicsFormat.R8G8B8A8_SRGB; // Albedo sRGB / SSSBuffer
gBufferUsage[0] = GBufferUsage.SubsurfaceScattering;
enableWrite[0] = true;
RTFormat[1] = GraphicsFormat.R8G8B8A8_UNorm; // Normal Buffer
gBufferUsage[1] = GBufferUsage.Normal;
enableWrite[1] = true; // normal buffer is used as RWTexture to composite decals in forward
RTFormat[2] = GraphicsFormat.R8G8B8A8_UNorm; // Data
gBufferUsage[2] = GBufferUsage.None;
enableWrite[2] = true;
RTFormat[3] = Builtin.GetLightingBufferFormat();
gBufferUsage[3] = GBufferUsage.None;
enableWrite[3] = true;
int index = 4;
if (supportLightLayers)
{
RTFormat[index] = GraphicsFormat.R8G8B8A8_UNorm;
gBufferUsage[index] = GBufferUsage.LightLayers;
index++;
}
// All buffer above are fixed. However shadow mask buffer can be setup or not depends on light in view.
// Thus it need to be the last one, so all indexes stay the same
if (supportShadowMask)
{
RTFormat[index] = Builtin.GetShadowMaskBufferFormat();
gBufferUsage[index] = GBufferUsage.ShadowMask;
index++;
}
}
public void InitSharedBuffers(GBufferManager gbufferManager, RenderPipelineSettings settings, RenderPipelineResources resources)
{
// Set the flags
m_MSAASupported = settings.supportMSAA && settings.supportedLitShaderMode != RenderPipelineSettings.SupportedLitShaderMode.DeferredOnly;
m_MSAASamples = m_MSAASupported ? settings.msaaSampleCount : MSAASamples.None;
m_MotionVectorsSupport = settings.supportMotionVectors;
m_ReuseGBufferMemory = settings.supportedLitShaderMode != RenderPipelineSettings.SupportedLitShaderMode.ForwardOnly;
m_DecalLayersSupported = settings.supportDecals && settings.supportDecalLayers;
// Create the depth/stencil buffer
m_CameraDepthStencilBuffer = RTHandles.Alloc(Vector2.one, TextureXR.slices, DepthBits.Depth32, dimension: TextureXR.dimension, useDynamicScale: true, name: "CameraDepthStencil");
// Create the mip chain buffer
m_CameraDepthBufferMipChainInfo = new HDUtils.PackedMipChainInfo();
m_CameraDepthBufferMipChainInfo.Allocate();
m_CameraDepthBufferMipChain = RTHandles.Alloc(ComputeDepthBufferMipChainSize, TextureXR.slices, colorFormat: GraphicsFormat.R32_SFloat, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, name: "CameraDepthBufferMipChain");
if (settings.lowresTransparentSettings.enabled)
{
// Create the half res depth buffer used for low resolution transparency
m_CameraHalfResDepthBuffer = RTHandles.Alloc(Vector2.one * 0.5f, TextureXR.slices, DepthBits.Depth32, dimension: TextureXR.dimension, useDynamicScale: true, name: "LowResDepthBuffer");
}
if (m_MotionVectorsSupport)
{
m_MotionVectorsRT = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: Builtin.GetMotionVectorFormat(), dimension: TextureXR.dimension, useDynamicScale: true, name: "MotionVectors");
if (m_MSAASupported)
{
m_MotionVectorsMSAART = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: Builtin.GetMotionVectorFormat(), dimension: TextureXR.dimension, enableMSAA: true, bindTextureMS: true, useDynamicScale: true, name: "MotionVectorsMSAA");
}
}
// Allocate the additional textures only if MSAA is supported
if (m_MSAASupported)
{
// Let's create the MSAA textures
m_CameraDepthStencilMSAABuffer = RTHandles.Alloc(Vector2.one, TextureXR.slices, DepthBits.Depth24, dimension: TextureXR.dimension, bindTextureMS: true, enableMSAA: true, useDynamicScale: true, name: "CameraDepthStencilMSAA");
m_CameraDepthValuesBuffer = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R32G32B32A32_SFloat, dimension: TextureXR.dimension, useDynamicScale: true, name: "DepthValuesBuffer");
m_DepthAsColorMSAART = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R32_SFloat, dimension: TextureXR.dimension, bindTextureMS: true, enableMSAA: true, useDynamicScale: true, name: "DepthAsColorMSAA");
m_StencilBufferResolved = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R8G8_UInt, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, name: "StencilBufferResolved");
// We need to allocate this texture as long as msaa is supported because on both mode, one of the cameras can be forward only using the framesettings
m_NormalMSAART = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R8G8B8A8_UNorm, dimension: TextureXR.dimension, enableMSAA: true, bindTextureMS: true, useDynamicScale: true, name: "NormalBufferMSAA");
// Create the required resolve materials
m_DepthResolveMaterial = CoreUtils.CreateEngineMaterial(resources.shaders.depthValuesPS);
m_ColorResolveMaterial = CoreUtils.CreateEngineMaterial(resources.shaders.colorResolvePS);
m_MotionVectorResolve = CoreUtils.CreateEngineMaterial(resources.shaders.resolveMotionVecPS);
if (m_DecalLayersSupported)
{
m_DecalPrePassBufferMSAA = RTHandles.Alloc(Vector2.one, TextureXR.slices, dimension: TextureXR.dimension, colorFormat: GraphicsFormat.R8G8B8A8_UNorm, enableMSAA: true, useDynamicScale: true, name: "Decal PrePass Buffer MSAA");
}
CoreUtils.SetKeyword(m_DepthResolveMaterial, "_HAS_MOTION_VECTORS", m_MotionVectorsSupport);
}
// TODO: try to save this memory allocation. We can't reuse GBuffer for now as it require an additional clear before the GBuffer pass, otherwise the buffer can contain garbage that can be misinterpreted
// if forward object are render (see test in HDRP_Test DecalNormalPatch buffer)
if (m_DecalLayersSupported)
{
m_DecalPrePassBuffer = RTHandles.Alloc(Vector2.one, TextureXR.slices, dimension: TextureXR.dimension, colorFormat: GraphicsFormat.R8G8B8A8_UNorm, useDynamicScale: true, name: "Decal PrePass Buffer");
}
// If we are in the forward only mode
if (!m_ReuseGBufferMemory)
{
// In case of full forward we must allocate the render target for normal buffer (or reuse one already existing)
// TODO: Provide a way to reuse a render target
m_NormalRT = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R8G8B8A8_UNorm, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, name: "NormalBuffer");
}
else
{
// When not forward only we should are using the normal buffer of the gbuffer
// In case of deferred, we must be in sync with NormalBuffer.hlsl and lit.hlsl files and setup the correct buffers
m_NormalRT = gbufferManager.GetNormalBuffer(0); // Normal + Roughness
}
}
public void InitSharedBuffers(GBufferManager gbufferManager, RenderPipelineSettings settings, RenderPipelineResources resources)
{
// Set the flags
m_MSAASupported = settings.supportMSAA;
m_MSAASamples = m_MSAASupported ? settings.msaaSampleCount : MSAASamples.None;
m_MotionVectorsSupport = settings.supportMotionVectors;
m_ReuseGBufferMemory = settings.supportedLitShaderMode != RenderPipelineSettings.SupportedLitShaderMode.ForwardOnly;
// Create the depth/stencil buffer
m_CameraDepthStencilBuffer = RTHandles.Alloc(Vector2.one, TextureXR.slices, DepthBits.Depth32, dimension: TextureXR.dimension, useDynamicScale: true, name: "CameraDepthStencil");
// Create the mip chain buffer
m_CameraDepthBufferMipChainInfo = new HDUtils.PackedMipChainInfo();
m_CameraDepthBufferMipChainInfo.Allocate();
m_CameraDepthBufferMipChain = RTHandles.Alloc(ComputeDepthBufferMipChainSize, TextureXR.slices, colorFormat: GraphicsFormat.R32_SFloat, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, name: "CameraDepthBufferMipChain");
if (settings.lowresTransparentSettings.enabled)
{
// Create the half res depth buffer used for low resolution transparency
m_CameraHalfResDepthBuffer = RTHandles.Alloc(Vector2.one * 0.5f, TextureXR.slices, DepthBits.Depth32, dimension: TextureXR.dimension, useDynamicScale: true, name: "LowResDepthBuffer");
}
// Technically we won't need this buffer in some cases, but nothing that we can determine at init time.
m_CameraStencilBufferCopy = RTHandles.Alloc(Vector2.one, TextureXR.slices, DepthBits.None, colorFormat: GraphicsFormat.R8_UNorm, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, name: "CameraStencilCopy"); // DXGI_FORMAT_R8_UINT is not supported by Unity
if (m_MotionVectorsSupport)
{
m_MotionVectorsRT = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: Builtin.GetMotionVectorFormat(), dimension: TextureXR.dimension, useDynamicScale: true, name: "MotionVectors");
if (m_MSAASupported)
{
m_MotionVectorsMSAART = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: Builtin.GetMotionVectorFormat(), dimension: TextureXR.dimension, enableMSAA: true, bindTextureMS: true, useDynamicScale: true, name: "MotionVectorsMSAA");
}
}
// Allocate the additional textures only if MSAA is supported
if (m_MSAASupported)
{
// Let's create the MSAA textures
m_CameraDepthStencilMSAABuffer = RTHandles.Alloc(Vector2.one, TextureXR.slices, DepthBits.Depth24, dimension: TextureXR.dimension, bindTextureMS: true, enableMSAA: true, useDynamicScale: true, name: "CameraDepthStencilMSAA");
m_CameraDepthValuesBuffer = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R32G32B32A32_SFloat, dimension: TextureXR.dimension, useDynamicScale: true, name: "DepthValuesBuffer");
m_DepthAsColorMSAART = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R32_SFloat, dimension: TextureXR.dimension, bindTextureMS: true, enableMSAA: true, useDynamicScale: true, name: "DepthAsColorMSAA");
// We need to allocate this texture as long as msaa is supported because on both mode, one of the cameras can be forward only using the framesettings
m_NormalMSAART = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R8G8B8A8_UNorm, dimension: TextureXR.dimension, enableMSAA: true, bindTextureMS: true, useDynamicScale: true, name: "NormalBufferMSAA");
// Create the required resolve materials
m_DepthResolveMaterial = CoreUtils.CreateEngineMaterial(resources.shaders.depthValuesPS);
m_ColorResolveMaterial = CoreUtils.CreateEngineMaterial(resources.shaders.colorResolvePS);
}
// If we are in the forward only mode
if (!m_ReuseGBufferMemory)
{
// In case of full forward we must allocate the render target for normal buffer (or reuse one already existing)
// TODO: Provide a way to reuse a render target
m_NormalRT = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R8G8B8A8_UNorm, dimension: TextureXR.dimension, enableRandomWrite: true, useDynamicScale: true, name: "NormalBuffer");
}
else
{
// When not forward only we should are using the normal buffer of the gbuffer
// In case of deferred, we must be in sync with NormalBuffer.hlsl and lit.hlsl files and setup the correct buffers
m_NormalRT = gbufferManager.GetNormalBuffer(0); // Normal + Roughness
}
}