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Merge pull request #554 from EvgeniiG/Unity-2017.3

Move the volumetric lighting code to another branch
/Yibing-Project-2
GitHub 7 年前
当前提交
b8d89dcb
共有 6 个文件被更改,包括 0 次插入60 次删除
  1. 12
      ScriptableRenderPipeline/HDRenderPipeline/HDRenderPipeline.cs
  2. 3
      ScriptableRenderPipeline/HDRenderPipeline/Lighting/TilePass/TilePass.cs
  3. 25
      ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/Lit.hlsl
  4. 10
      ScriptableRenderPipeline/HDRenderPipeline/ShaderVariables.hlsl
  5. 10
      ScriptableRenderPipeline/HDRenderPipeline/Lighting/Volumetrics.meta

12
ScriptableRenderPipeline/HDRenderPipeline/HDRenderPipeline.cs


m_LightLoop.AllocResolutionDependentBuffers(camera.pixelWidth, camera.pixelHeight);
}
if (resolutionChanged && m_VolumetricLightingEnabled)
CreateVolumetricLightingBuffers(camera.pixelWidth, camera.pixelHeight);
// update recorded window resolution
m_CurrentWidth = camera.pixelWidth;
m_CurrentHeight = camera.pixelHeight;

cmd.SetGlobalVectorArray(HDShaderIDs._ShapeParams, sssParameters.shapeParams);
cmd.SetGlobalVectorArray(HDShaderIDs._HalfRcpVariancesAndWeights, sssParameters.halfRcpVariancesAndWeights);
cmd.SetGlobalVectorArray(HDShaderIDs._TransmissionTints, sssParameters.transmissionTints);
SetGlobalVolumeProperties(m_VolumetricLightingEnabled, cmd);
}
}

RenderForward(m_CullResults, camera, renderContext, cmd, ForwardPass.Transparent);
RenderForwardError(m_CullResults, camera, renderContext, cmd, ForwardPass.Transparent);
// Render volumetric lighting
VolumetricLightingPass(hdCamera, cmd);
PushFullScreenDebugTexture(cmd, m_CameraColorBuffer, camera, renderContext, FullScreenDebugMode.NanTracker);
// Planar and real time cubemap doesn't need post process and render in FP16

var depthTexture = GetDepthTexture();
var options = new LightLoop.LightingPassOptions();
options.volumetricLightingEnabled = m_VolumetricLightingEnabled;
if (m_CurrentDebugDisplaySettings.renderingDebugSettings.enableSSSAndTransmission)
{

CoreUtils.SetRenderTarget(cmd, m_HTileRT, ClearFlag.Color, Color.black);
}
}
if (m_VolumetricLightingEnabled)
ClearVolumetricLightingBuffers(cmd, camera.isFirstFrame);
// TEMP: As we are in development and have not all the setup pass we still clear the color in emissive buffer and gbuffer, but this will be removed later.

3
ScriptableRenderPipeline/HDRenderPipeline/Lighting/TilePass/TilePass.cs


public struct LightingPassOptions
{
public bool outputSplitLighting;
public bool volumetricLightingEnabled;
}
public void RenderDeferredDirectionalShadow(HDCamera hdCamera, RenderTargetIdentifier deferredShadowRT, RenderTargetIdentifier depthTexture, CommandBuffer cmd)

cmd.SetComputeTextureParam(deferredComputeShader, kernel, HDShaderIDs.specularLightingUAV, colorBuffers[0]);
cmd.SetComputeTextureParam(deferredComputeShader, kernel, HDShaderIDs.diffuseLightingUAV, colorBuffers[1]);
HDRenderPipeline.SetGlobalVolumeProperties(options.volumetricLightingEnabled, cmd, deferredComputeShader);
// always do deferred lighting in blocks of 16x16 (not same as tiled light size)

25
ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/Lit.hlsl


#include "Lit.cs.hlsl"
#include "SubsurfaceScatteringSettings.cs.hlsl"
// Enables attenuation of light source contributions by participating media (fog).
#define VOLUMETRIC_SHADOWING_ENABLED
#ifdef VOLUMETRIC_SHADOWING_ENABLED
// Apparently, not all shaders include "ShaderVariables.hlsl".
#include "../../ShaderVariables.hlsl"
#include "../../../Core/ShaderLibrary/VolumeRendering.hlsl"
#endif
// Define refraction keyword helpers
#define HAS_REFRACTION (defined(_REFRACTION_PLANE) || defined(_REFRACTION_SPHERE))
#if HAS_REFRACTION

float3 transmissionPositionWS; // start of the refracted ray after exiting the shape
float3 transmissionTransmittance; // transmittance due to absorption
float transmissionSSMipLevel; // mip level of the screen space gaussian pyramid for rough refraction
#ifdef VOLUMETRIC_SHADOWING_ENABLED
float globalFogExtinction;
#endif
};
// This is a refract - TODO: do we call original refract or this one, original maybe slightly more expensive, to check

{
preLightData.ltcMagnitudeFresnel = bsdfData.fresnel0 * ltcGGXFresnelMagnitudeDiff + (float3)ltcGGXFresnelMagnitude;
}
#ifdef VOLUMETRIC_SHADOWING_ENABLED
preLightData.globalFogExtinction = _GlobalFog_Extinction;
#endif
#ifdef REFRACTION_MODEL
RefractionModelResult refraction = REFRACTION_MODEL(V, posInput, bsdfData);

shadow = lerp(1.0, shadow, lightData.shadowDimmer);
illuminance *= shadow;
}
#ifdef VOLUMETRIC_SHADOWING_ENABLED
float volumetricShadow = Transmittance(OpticalDepthHomogeneous(preLightData.globalFogExtinction, dist));
// Premultiply.
lightData.diffuseScale *= volumetricShadow;
lightData.specularScale *= volumetricShadow;
#endif
// Projector lights always have a cookies, so we can perform clipping inside the if().
[branch] if (lightData.cookieIndex >= 0)

10
ScriptableRenderPipeline/HDRenderPipeline/ShaderVariables.hlsl


float4 _InvProjParam;
float4 _ScreenSize; // (w, h, 1/w, 1/h)
float4 _FrustumPlanes[6]; // (N, -dot(N, P))
// Volumetric lighting. Should be a struct in 'UnityPerFrame'.
// Unfortunately, we cannot modify the layout of 'UnityPerFrame',
// and structures inside constant buffers are not supported by Unity.
float3 _GlobalFog_Scattering;
float _GlobalFog_Extinction;
float _GlobalFog_Asymmetry;
float _GlobalFog_Align16_0;
float _GlobalFog_Align16_1;
float _GlobalFog_Align16_2;
CBUFFER_END
#ifdef USE_LEGACY_UNITY_MATRIX_VARIABLES

10
ScriptableRenderPipeline/HDRenderPipeline/Lighting/Volumetrics.meta


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