TorqueGameEngines/Torque3D
1
0
Fork 0
mirror of https://github.com/TorqueGameEngines/Torque3D.git synced 2026-02-17 05:33:47 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

'frontend' wipwork for the probe array. takes up to 50 probes, calcs a weighted blend, and displays them all in a batch.

Browse source
This commit is contained in:
Azaezel 2019-01-14 16:31:26 -06:00
parent 8573e28e79
commit 0fa3568e07
3 changed files with 175 additions and 82 deletions
Download patch file Download diff file Expand all files Collapse all files

203
Templates/Full/game/shaders/common/lighting/advanced/reflectionProbeArrayP.hlsl
View file

@ -7,37 +7,38 @@
struct ConvexConnectP
{
float4 pos : TORQUE_POSITION;
float4 wsEyeDir : TEXCOORD0;
float4 ssPos : TEXCOORD1;
float4 uv0 : TEXCOORD1;
float4 vsEyeDir : TEXCOORD2;
};
TORQUE_UNIFORM_SAMPLER2D(deferredBuffer, 0);
TORQUE_UNIFORM_SAMPLER2D(colorBuffer, 1);
TORQUE_UNIFORM_SAMPLER2D(matInfoBuffer, 2);
TORQUE_UNIFORM_SAMPLERCUBE(cubeMap, 3);
TORQUE_UNIFORM_SAMPLERCUBE(irradianceCubemap, 4);
TORQUE_UNIFORM_SAMPLER2D(BRDFTexture, 5);
uniform float cubeMips;
uniform float4 rtParams0;
uniform float3 probeWSPos;
uniform float3 probeLSPos;
uniform float4 vsFarPlane;
uniform float radius;
uniform float2 attenuation;
uniform float4x4 worldToObj;
uniform float4x4 cameraToWorld;
uniform float3 eyePosWorld;
uniform float3 bbMin;
uniform float3 bbMax;
uniform float useSphereMode;
//cubemap arrays require all the same size. so shared mips# value
uniform float cubeMips;
#define MAX_PROBES 50
uniform float numProbes;
TORQUE_UNIFORM_SAMPLERCUBEARRAY(cubeMap[MAX_PROBES], 3);
TORQUE_UNIFORM_SAMPLERCUBEARRAY(irradianceCubemap[MAX_PROBES] 4);
uniform float3 inProbePosArray[MAX_PROBES];
uniform float4x4 worldToObjArray[MAX_PROBES];
uniform float3 bbMinArray[MAX_PROBES];
uniform float3 bbMaxArray[MAX_PROBES];
uniform float useSphereMode[MAX_PROBES];
uniform float radius[MAX_PROBES];
uniform float2 attenuation[MAX_PROBES];
// Box Projected IBL Lighting
// Based on: http://www.gamedev.net/topic/568829-box-projected-cubemap-environment-mapping/
// and https://seblagarde.wordpress.com/2012/09/29/image-based-lighting-approaches-and-parallax-corrected-cubemap/
float3 boxProject(float3 wsPosition, float3 reflectDir, float3 boxWSPos, float3 boxMin, float3 boxMax)
{
float3 nrdir = reflectDir;
@ -52,12 +53,23 @@ float3 boxProject(float3 wsPosition, float3 reflectDir, float3 boxWSPos, float3
return posonbox - boxWSPos;
}
float3 iblBoxDiffuse( Surface surface,
TORQUE_SAMPLERCUBE(irradianceCube),
float3 boxPos,
float3 boxMin,
float3 boxMax)
{
float3 cubeN = boxProject(surface.P, surface.N, boxPos, boxMin, boxMax);
cubeN.z *=-1;
return TORQUE_TEXCUBELOD(irradianceCube, float4(cubeN,0)).xyz;
}
float3 iblBoxSpecular(float3 normal, float3 wsPos, float roughness, float3 surfToEye,
TORQUE_SAMPLER2D(brdfTexture),
//TORQUE_SAMPLERCUBE(radianceCube),
float3 boxPos,
float3 boxMin,
float3 boxMax)
TORQUE_SAMPLERCUBE(radianceCube),
float3 boxPos,
float3 boxMin,
float3 boxMax)
{
float ndotv = clamp(dot(normal, surfToEye), 0.0, 1.0);
@ -65,88 +77,115 @@ float3 iblBoxSpecular(float3 normal, float3 wsPos, float roughness, float3 surfT
float2 brdf = TORQUE_TEX2DLOD(brdfTexture, float4(roughness, ndotv,0.0,0.0)).xy;
// Radiance (Specular)
float maxmip = pow(cubeMips+1,2);
float lod = roughness*maxmip;
float lod = roughness*cubeMips;
float3 r = reflect(surfToEye, normal);
float3 cubeR = normalize(r);
cubeR = boxProject(wsPos, cubeR, boxPos, boxMin, boxMax);
float3 radiance = float3(1,1,1);//TORQUE_TEXCUBELOD(radianceCube, float4(cubeR, lod)).xyz * (brdf.x + brdf.y);
float3 radiance = TORQUE_TEXCUBELOD(radianceCube, float4(cubeR, lod)).xyz * (brdf.x + brdf.y);
return radiance;
}
float4 main(ConvexConnectP IN) : SV_TARGET
float defineBoxSpaceInfluence(float3 surfPosWS, float3 probePos, float4x4 worldToObj, float radius, float atten)
{
// Compute scene UV
float3 ssPos = IN.ssPos.xyz / IN.ssPos.w;
float2 uvScene = getUVFromSSPos( ssPos, rtParams0 );
float3 surfPosLS = mul( worldToObj, float4(surfPosWS,1.0)).xyz;
float3 boxMinLS = probePos-(float3(1,1,1)*radius);
float3 boxMaxLS = probePos+(float3(1,1,1)*radius);
float boxOuterRange = length(boxMaxLS - boxMinLS);
float boxInnerRange = boxOuterRange / atten;
float3 localDir = float3(abs(surfPosLS.x), abs(surfPosLS.y), abs(surfPosLS.z));
localDir = (localDir - boxInnerRange) / (boxOuterRange - boxInnerRange);
return max(localDir.x, max(localDir.y, localDir.z)) * -1;
}
float4 main( ConvexConnectP IN ) : SV_TARGET
{
//eye ray WS/LS
float3 vsEyeRay = getDistanceVectorToPlane( -vsFarPlane.w, IN.vsEyeDir.xyz, vsFarPlane );
float3 wsEyeRay = mul(cameraToWorld, float4(vsEyeRay, 0)).xyz;
//unpack normal and linear depth
float4 normDepth = TORQUE_DEFERRED_UNCONDITION(deferredBuffer, uvScene);
float4 normDepth = TORQUE_DEFERRED_UNCONDITION(deferredBuffer, IN.uv0);
//create surface
Surface surface = createSurface( normDepth, TORQUE_SAMPLER2D_MAKEARG(colorBuffer),TORQUE_SAMPLER2D_MAKEARG(matInfoBuffer),
uvScene, eyePosWorld, wsEyeRay, cameraToWorld);
float blendVal = 1.0;
IN.uv0, eyePosWorld, wsEyeRay, cameraToWorld);
//early out if emissive
if (getFlag(surface.matFlag, 0))
{
discard;
}
float blendVal[MAX_PROBES];
float3 surfToEye = normalize(surface.P - eyePosWorld);
[unroll]
for(float i=0; i < 10; i++)
{
float3 probeWSPos = float3(i * 1.1, 0, 2);
float3 L = probeWSPos - surface.P;
blendVal = 1.0-length(L)/radius;
clip(blendVal);
}
int i;
float3 irradiance = float3(0,0,0);
float3 specular = float3(0,0,0);
float blendSum = 0;
float invBlendSum = 0;
for(i=0; i < numProbes; i++)
{
float3 probeWS = inProbePosArray[i];
float3 L = probeWS - surface.P;
if(useSphereMode[i])
{
float3 L = inProbePosArray[i] - surface.P;
blendVal[i] = 1.0-length(L)/radius[i];
blendVal[i] = max(0,blendVal[i]);
}
else
{
float tempAttenVal = 3.5;
blendVal[i] = defineBoxSpaceInfluence(surface.P, inProbePosArray[i], worldToObjArray[i], radius[i], tempAttenVal);
blendVal[i] = max(0,blendVal[i]);
}
blendSum += blendVal[i];
invBlendSum +=(1.0f - blendVal[i]);
}
// Weight0 = normalized NDF, inverted to have 1 at center, 0 at boundary.
// And as we invert, we need to divide by Num-1 to stay normalized (else sum is > 1).
// respect constraint B.
// Weight1 = normalized inverted NDF, so we have 1 at center, 0 at boundary
// and respect constraint A.
for(i=0; i < numProbes; i++)
{
blendVal[i] = (1.0f - ( blendVal[i] / blendSum)) / (numProbes - 1);
blendVal[i] *= ((1.0f - blendVal[i]) / invBlendSum);
blendSum += blendVal[i];
}
//render into the bound space defined above
float3 surfToEye = normalize(surface.P - eyePosWorld);
float3 irradiance = float3(1,0,0);//TORQUE_TEXCUBELOD(irradianceCubemap, float4(surface.N,0)).xyz;
float3 specular = iblBoxSpecular(surface.N, surface.P, surface.roughness, surfToEye, TORQUE_SAMPLER2D_MAKEARG(BRDFTexture)/*, TORQUE_SAMPLERCUBE_MAKEARG(cubeMap)*/, probeWSPos, bbMin, bbMax);
// Normalize blendVal
if (blendSum == 0.0f) // Possible with custom weight
{
blendSum = 1.0f;
}
float invBlendSumWeighted = 1.0f / blendSum;
for (int i = 0; i < numProbes; ++i)
{
blendVal[i] *= invBlendSumWeighted;
}
float3 irradiance = float3(0,0,0);
float3 specular = float3(0,0,0);
float3 F = FresnelSchlickRoughness(surface.NdotV, surface.f0, surface.roughness);
specular *= F;
//energy conservation
float3 kD = 1.0.xxx - F;
kD *= 1.0 - surface.metalness;
float3 kD = 1.0.xxx - F;
kD *= 1.0 - surface.metalness;
for (int i = 0; i < numProbes; ++i)
{
irradiance += blendVal[i]*iblBoxDiffuse(surface,TORQUE_SAMPLERCUBE_MAKEARG(irradianceCubemap[i]), inProbePosArray[i], bbMinArray[i], bbMaxArray[i]);
specular += blendVal[i]*F*iblBoxSpecular(surface.N, surface.P, surface.roughness, surfToEye, TORQUE_SAMPLER2D_MAKEARG(BRDFTexture), TORQUE_SAMPLERCUBE_MAKEARG(cubeMap[i]), inProbePosArray[i], bbMinArray[i], bbMaxArray[i]);
}
//final diffuse color
float3 diffuse = kD * irradiance * surface.baseColor.rgb;
return float4(diffuse + specular * surface.ao, blendVal);
/*float3 N = getCubeDir(face,IN.uv);
float3 irradiance = 0;
// tangent space calculation from origin point
float3 up = float3(0.0, 0.0, 1.0);
float3 right = cross(up, N);
up = cross(N, right);
float sampleDelta = 0.025;
int nrSamples = 0;
for(float phi = 0.0; phi < M_2PI_F; phi += sampleDelta)
{
for(float theta = 0.0; theta < M_HALFPI_F; theta += sampleDelta)
{
// spherical to cartesian (in tangent space)
float3 tangentSample = float3(sin(theta) * cos(phi), sin(theta) * sin(phi), cos(theta));
// tangent space to world
float3 sampleVec = tangentSample.x * right + tangentSample.y * up + tangentSample.z * N;
irradiance += TORQUE_TEXCUBE(environmentMap, sampleVec).rgb * cos(theta) * sin(theta);
nrSamples++;
}
}
irradiance = M_PI_F * irradiance * (1.0 / float(nrSamples));
return float4(irradiance, 1.0);*/
//return float4(1,0,0,1);
//float4 texCoord = float4( 1,0,0, 1 );
//return texCoord;
}
return float4(diffuse + specular * surface.ao, blendVal);
}

52
Templates/Full/game/shaders/common/lighting/advanced/reflectionProbeArrayV.hlsl Normal file
View file

@ -0,0 +1,52 @@
//-----------------------------------------------------------------------------
// Copyright (c) 2012 GarageGames, LLC
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//-----------------------------------------------------------------------------
#include "../../hlslStructs.hlsl"
#include "../../shaderModel.hlsl"
#include "../../torque.hlsl"
struct GFXVertexPT
{
float3 pos : POSITION;
float4 uv : TEXCOORD1;
};
struct ConnectData
{
float4 hpos : TORQUE_POSITION;
float4 uv0 : TEXCOORD1;
float4 vsEyeDir : TEXCOORD2;
};
uniform float4 rtParams0;
uniform float4x4 worldViewOnly;
ConnectData main( GFXVertexPT IN )
{
ConnectData OUT;
OUT.hpos = float4(IN.pos,1.0);
OUT.uv0 = float4(viewportCoordToRenderTarget( IN.uv, rtParams0 ),0,0);
OUT.vsEyeDir = mul(worldViewOnly, float4(IN.pos, 1.0));
return OUT;
}

2
Templates/Full/game/shaders/common/shaderModel.hlsl
View file

@ -40,12 +40,14 @@
#define TORQUE_UNIFORM_SAMPLER2DCMP(tex,regist) uniform Texture2D texture_##tex : register(T##regist); uniform SamplerComparisonState tex : register(S##regist)
#define TORQUE_UNIFORM_SAMPLER3D(tex,regist) uniform Texture3D texture_##tex : register(T##regist); uniform SamplerState tex : register(S##regist)
#define TORQUE_UNIFORM_SAMPLERCUBE(tex,regist) uniform TextureCube texture_##tex : register(T##regist); uniform SamplerState tex : register(S##regist)
#define TORQUE_UNIFORM_SAMPLERCUBEARRAY(tex,regist) uniform TextureCubeArray texture_##tex : register(T##regist); uniform SamplerState tex : register(S##regist)
// Sampling functions
#define TORQUE_TEX1D(tex,coords) texture_##tex.Sample(tex,coords)
#define TORQUE_TEX2D(tex,coords) texture_##tex.Sample(tex,coords)
#define TORQUE_TEX2DPROJ(tex,coords) texture_##tex.Sample(tex,coords.xy / coords.w)
#define TORQUE_TEX3D(tex,coords) texture_##tex.Sample(tex,coords)
#define TORQUE_TEXCUBE(tex,coords) texture_##tex.Sample(tex,coords)
#define TORQUE_TEXCUBEARRAY(tex,coords) texture_##tex.Sample(tex,coords)
// The mipmap LOD is specified in coord.w
#define TORQUE_TEX2DLOD(tex,coords) texture_##tex.SampleLevel(tex,coords.xy,coords.w)
#define TORQUE_TEXCUBELOD(tex,coords) texture_##tex.SampleLevel(tex,coords.xyz,coords.w)