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attempt to update to new shadows code. no luck yet but save progress

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Filip Iliescu 8 年前
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04889593
共有 2 个文件被更改，包括 542 次插入 和 586 次删除
  1. 998
      Assets/ScriptableRenderPipeline/MobileRenderPipeline/ClassicDeferred/ClassicDeferredPipeline.cs
  2. 130
      Assets/ScriptableRenderPipeline/MobileRenderPipeline/ClassicDeferred/LightingTemplate.hlsl

998
Assets/ScriptableRenderPipeline/MobileRenderPipeline/ClassicDeferred/ClassicDeferredPipeline.cs
文件差异内容过多而无法显示
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130
Assets/ScriptableRenderPipeline/MobileRenderPipeline/ClassicDeferred/LightingTemplate.hlsl
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#define BOX_LIGHT (2)
#define DIRECTIONAL_LIGHT (3)
#define SHADOW_FPTL
# if defined(SHADER_API_D3D11)
# include "../../ShaderLibrary/API/D3D11.hlsl"
# elif defined(SHADER_API_PSSL)
# include "../../ShaderLibrary/API/PSSL.hlsl"
# elif defined(SHADER_API_XBOXONE)
# include "../../ShaderLibrary/API/D3D11.hlsl"
# include "../../ShaderLibrary/API/D3D11_1.hlsl"
# elif defined(SHADER_API_METAL)
# include "../../ShaderLibrary/API/Metal.hlsl"
# else
# error unsupported shader api
# endif
# include "../../ShaderLibrary/API/Validate.hlsl"
# include "../../ShaderLibrary/Shadow/Shadow.hlsl"
#undef SHADOW_FPTL
//#include "../../ShaderLibrary/Shadow/Shadow.hlsl"
//#include "../../fptl/ShadowContext.hlsl"
//#include "../../fptl/ShadowDispatch.hlsl"
CBUFFER_START(ShadowLightData)
float4 g_vShadow3x3PCFTerms0;

// StructuredBuffer<DirectionalLight> g_dirLightData;
#define REVERSE_ZBUF
#define DECLARE_SHADOWMAP( tex ) Texture2D tex; SamplerComparisonState sampler##tex
#ifdef REVERSE_ZBUF
#define SAMPLE_SHADOW( tex, coord ) tex.SampleCmpLevelZero( sampler##tex, (coord).xy, (coord).z )
#else
#define SAMPLE_SHADOW( tex, coord ) tex.SampleCmpLevelZero( sampler##tex, (coord).xy, 1.0-(coord).z )
#endif
DECLARE_SHADOWMAP(g_tShadowBuffer);
float ComputeShadow_PCF_3x3_Gaussian(float3 vPositionWs, float4x4 matWorldToShadow)
{
float4 vPositionTextureSpace = mul(float4(vPositionWs.xyz, 1.0), matWorldToShadow);
vPositionTextureSpace.xyz /= vPositionTextureSpace.w;
float2 shadowMapCenter = vPositionTextureSpace.xy;
if ((shadowMapCenter.x < 0.0f) || (shadowMapCenter.x > 1.0f) || (shadowMapCenter.y < 0.0f) || (shadowMapCenter.y > 1.0f))
return 1.0f;
float objDepth = saturate(257.0 / 256.0 - vPositionTextureSpace.z);
float4 v20Taps;
v20Taps.x = SAMPLE_SHADOW(g_tShadowBuffer, float3(shadowMapCenter.xy + g_vShadow3x3PCFTerms1.xy, objDepth)).x; // 1 1
v20Taps.y = SAMPLE_SHADOW(g_tShadowBuffer, float3(shadowMapCenter.xy + g_vShadow3x3PCFTerms1.zy, objDepth)).x; // -1 1
v20Taps.z = SAMPLE_SHADOW(g_tShadowBuffer, float3(shadowMapCenter.xy + g_vShadow3x3PCFTerms1.xw, objDepth)).x; // 1 -1
v20Taps.w = SAMPLE_SHADOW(g_tShadowBuffer, float3(shadowMapCenter.xy + g_vShadow3x3PCFTerms1.zw, objDepth)).x; // -1 -1
float flSum = dot(v20Taps.xyzw, float4(0.25, 0.25, 0.25, 0.25));
if ((flSum == 0.0) || (flSum == 1.0))
return flSum;
flSum *= g_vShadow3x3PCFTerms0.x * 4.0;
float4 v33Taps;
v33Taps.x = SAMPLE_SHADOW(g_tShadowBuffer, float3(shadowMapCenter.xy + g_vShadow3x3PCFTerms2.xz, objDepth)).x; // 1 0
v33Taps.y = SAMPLE_SHADOW(g_tShadowBuffer, float3(shadowMapCenter.xy + g_vShadow3x3PCFTerms3.xz, objDepth)).x; // -1 0
v33Taps.z = SAMPLE_SHADOW(g_tShadowBuffer, float3(shadowMapCenter.xy + g_vShadow3x3PCFTerms3.zy, objDepth)).x; // 0 -1
v33Taps.w = SAMPLE_SHADOW(g_tShadowBuffer, float3(shadowMapCenter.xy + g_vShadow3x3PCFTerms2.zy, objDepth)).x; // 0 1
flSum += dot(v33Taps.xyzw, g_vShadow3x3PCFTerms0.yyyy);
flSum += SAMPLE_SHADOW(g_tShadowBuffer, float3(shadowMapCenter.xy, objDepth)).x * g_vShadow3x3PCFTerms0.z;
return flSum;
}
//---------------------------------------------------------------------------------------------------------------------------------------------------------
/**
* Gets the cascade weights based on the world position of the fragment and the positions of the split spheres for each cascade.
* Returns an invalid split index if past shadowDistance (ie 4 is invalid for cascade)
*/
float GetSplitSphereIndexForDirshadows(float3 wpos)
{
float3 fromCenter0 = wpos.xyz - g_vDirShadowSplitSpheres[0].xyz;
float3 fromCenter1 = wpos.xyz - g_vDirShadowSplitSpheres[1].xyz;
float3 fromCenter2 = wpos.xyz - g_vDirShadowSplitSpheres[2].xyz;
float3 fromCenter3 = wpos.xyz - g_vDirShadowSplitSpheres[3].xyz;
float4 distances2 = float4(dot(fromCenter0, fromCenter0), dot(fromCenter1, fromCenter1), dot(fromCenter2, fromCenter2), dot(fromCenter3, fromCenter3));
float4 vDirShadowSplitSphereSqRadii;
vDirShadowSplitSphereSqRadii.x = g_vDirShadowSplitSpheres[0].w;
vDirShadowSplitSphereSqRadii.y = g_vDirShadowSplitSpheres[1].w;
vDirShadowSplitSphereSqRadii.z = g_vDirShadowSplitSpheres[2].w;
vDirShadowSplitSphereSqRadii.w = g_vDirShadowSplitSpheres[3].w;
fixed4 weights = float4(distances2 < vDirShadowSplitSphereSqRadii);
weights.yzw = saturate(weights.yzw - weights.xyz);
return 4 - dot(weights, float4(4, 3, 2, 1));
}
float SampleShadow(uint type, float3 vPositionWs, float3 vPositionToLightDirWs, uint lightIndex)
{
float flShadowScalar = 1.0;
int shadowSplitIndex = 0;
if (type == DIRECTIONAL_LIGHT)
{
shadowSplitIndex = GetSplitSphereIndexForDirshadows(vPositionWs);
}
else if (type == SPHERE_LIGHT)
{
float3 absPos = abs(vPositionToLightDirWs);
shadowSplitIndex = (vPositionToLightDirWs.z > 0) ? CUBEMAPFACE_NEGATIVE_Z : CUBEMAPFACE_POSITIVE_Z;
if (absPos.x > absPos.y)
{
if (absPos.x > absPos.z)
{
shadowSplitIndex = (vPositionToLightDirWs.x > 0) ? CUBEMAPFACE_NEGATIVE_X : CUBEMAPFACE_POSITIVE_X;
}
}
else
{
if (absPos.y > absPos.z)
{
shadowSplitIndex = (vPositionToLightDirWs.y > 0) ? CUBEMAPFACE_NEGATIVE_Y : CUBEMAPFACE_POSITIVE_Y;
}
}
}
flShadowScalar = ComputeShadow_PCF_3x3_Gaussian(vPositionWs.xyz, g_matWorldToShadow[lightIndex * MAX_SHADOWMAP_PER_LIGHT + shadowSplitIndex]);
return flShadowScalar;
}
//debug
//float3 GetViewPosFromLinDepth(float2 v2ScrPos, float fLinDepth)
//{

float2 uv;
float4 colorCookie = float4(1, 1, 1, 1);
ShadowContext shadowContext = InitShadowContext();
OnChipDeferredFragSetup(i, uv, vpos, wpos, depth);
// needed? old shadow code is commented out, we switched to new shadow code .. aka sampleShadow()

atten *= tex2D (_LightTextureB0, att.rr).UNITY_ATTEN_CHANNEL;
if (_LightIndexForShadowMatrixArray >= 0)
atten *= SampleShadow(SPOT_LIGHT, wpos, 0, _LightIndexForShadowMatrixArray);
atten *= GetPunctualShadowAttenuation(shadowContext, wpos, 0.0.xxx, _LightIndexForShadowMatrixArray, 0.0.xxx);
// directional light case
#elif defined (DIRECTIONAL) || defined (DIRECTIONAL_COOKIE)

if (_LightIndexForShadowMatrixArray >= 0)
atten *= SampleShadow(DIRECTIONAL_LIGHT, wpos, 0, _LightIndexForShadowMatrixArray);
atten *= GetDirectionalShadowAttenuation(shadowContext, wpos, 0.0.xxx, _LightIndexForShadowMatrixArray, 0.0.xxx);
#if defined (DIRECTIONAL_COOKIE)
colorCookie = tex2Dlod (_LightTexture0, float4(mul(unity_WorldToLight, half4(wpos,1)).xy, 0, 0));

float atten = tex2D (_LightTextureB0, att.rr).UNITY_ATTEN_CHANNEL;
if (_LightIndexForShadowMatrixArray >= 0)
atten *= SampleShadow(SPHERE_LIGHT, wpos, lightDir, _LightIndexForShadowMatrixArray);
atten *= GetPunctualShadowAttenuation(shadowContext, wpos, 0.0.xxx, _LightIndexForShadowMatrixArray, lightDir);
#if defined (POINT_COOKIE)
colorCookie = texCUBElod(_LightTexture0, float4(mul(unity_WorldToLight, float4(wpos,1)).xyz, 0));

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