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- Changed shadow filter for NVIDIA GPUs (now it's using 5x5 gaussian blur).

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This commit is contained in:
NicolasDe 2013-09-26 09:18:30 +04:00
parent 6993fd1815
commit 14b4a60b56
1 changed files with 22 additions and 1 deletions
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23
sp/src/materialsystem/stdshaders/common_flashlight_fxc.h
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@ -10,6 +10,7 @@
#include "common_ps_fxc.h"
#define NEW_SHADOW_FILTERS // Comment if you want to enable retail shadow filter.
// JasonM - TODO: remove this simpleton version
float DoShadow( sampler DepthSampler, float4 texCoord )
@ -138,13 +139,28 @@ float DoShadowNvidiaPCF3x3Box( sampler DepthSampler, const float4 shadowMapPos )
// 4 20 33 20 4
// 1 4 7 4 1
//
#if defined( NEW_SHADOW_FILTERS )
float DoShadowNvidiaPCF5x5Gaussian( sampler DepthSampler, const float3 shadowMapPos )
#else
float DoShadowNvidiaPCF5x5Gaussian( sampler DepthSampler, const float4 shadowMapPos )
#endif
{
#if defined( NEW_SHADOW_FILTERS )
// TODO: Set resolution from flashlight's state.
float fEpsilon = 1.0f / 1024.0f;
#else
float fEpsilon = 1.0f / 512.0f;
#endif
float fTwoEpsilon = 2.0f * fEpsilon;
#if defined( NEW_SHADOW_FILTERS )
// I guess we don't need this one.
// float ooW = 1.0f / shadowMapPos.w; // 1 / w
float3 shadowMapCenter_objDepth = shadowMapPos; // Do both projections at once
#else
float ooW = 1.0f / shadowMapPos.w; // 1 / w
float3 shadowMapCenter_objDepth = shadowMapPos.xyz * ooW; // Do both projections at once
#endif
float2 shadowMapCenter = shadowMapCenter_objDepth.xy; // Center of shadow filter
float objDepth = shadowMapCenter_objDepth.z; // Object depth in shadow space
@ -601,7 +617,12 @@ float DoFlashlightShadow( sampler DepthSampler, sampler RandomRotationSampler, f
#if !defined( _X360 ) //PC
if( nShadowLevel == NVIDIA_PCF_POISSON )
#if defined( NEW_SHADOW_FILTERS )
// Let's replace noise filter with gaussian blur, like in Portal 2.
flShadow = DoShadowNvidiaPCF5x5Gaussian( DepthSampler, vProjCoords );
#else
flShadow = DoShadowPoisson16Sample( DepthSampler, RandomRotationSampler, vProjCoords, vScreenPos, vShadowTweaks, true, false );
#endif
else if( nShadowLevel == ATI_NOPCF )
flShadow = DoShadowPoisson16Sample( DepthSampler, RandomRotationSampler, vProjCoords, vScreenPos, vShadowTweaks, false, false );
else if( nShadowLevel == ATI_NO_PCF_FETCH4 )
@ -818,4 +839,4 @@ float3 DoFlashlight( float3 flashlightPos, float3 worldPos, float4 flashlightSpa
return diffuseLighting;
}
#endif //#ifndef COMMON_FLASHLIGHT_FXC_H_
#endif //#ifndef COMMON_FLASHLIGHT_FXC_H_