ShaderFeature::Resources TerrainDetailMapFeatHLSL::getResources( const MaterialFeatureData &fd )
{
Resources res;
if ( getProcessIndex() == 0 )
{
// If this is the first detail pass then we
// samples from the layer tex.
res.numTex += 1;
// If this material also does parallax then it
// will generate the negative view vector and the
// worldToTanget transform.
if ( fd.features.hasFeature( MFT_TerrainParallaxMap ) )
res.numTexReg += 4;
}
// sample from the detail texture for diffuse coloring.
res.numTex += 1;
// If we have parallax for this layer then we'll also
// be sampling the normal map for the parallax heightmap.
if ( fd.features.hasFeature( MFT_TerrainParallaxMap, getProcessIndex() ) )
res.numTex += 1;
// Finally we always send the detail texture
// coord to the pixel shader.
res.numTexReg += 1;
return res;
}
ShaderFeature::Resources TerrainDetailMapFeatGLSL::getResources( const MaterialFeatureData &fd )
{
Resources res;
if ( fd.features.hasFeature( MFT_PrePassConditioner ) )
{
// If this is a prepass and we don't have a
// matching normal map... we use no resources.
if ( !fd.features.hasFeature( MFT_TerrainNormalMap, getProcessIndex() ) )
return res;
// If this is the first matching normal map then
// it also samples from the layer tex.
if ( !fd.features.hasFeature( MFT_TerrainNormalMap, getProcessIndex() - 1 ) )
res.numTex += 1;
}
else
{
// If this is the first detail pass then it
// also samples from the layer tex.
if ( !fd.features.hasFeature( MFT_TerrainDetailMap, getProcessIndex() - 1 ) )
res.numTex += 1;
res.numTex += 1;
}
res.numTexReg += 1;
return res;
}
void ParallaxFeatHLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
AssertFatal( GFX->getPixelShaderVersion() >= 2.0,
"ParallaxFeatHLSL::processPix - We don't support SM 1.x!" );
MultiLine *meta = new MultiLine;
// Order matters... get this first!
Var *texCoord = getInTexCoord( "texCoord", "float2", true, componentList );
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
// We need the negative tangent space view vector
// as in parallax mapping we step towards the camera.
Var *negViewTS = (Var*)LangElement::find( "negViewTS" );
if ( !negViewTS )
{
Var *inNegViewTS = (Var*)LangElement::find( "outNegViewTS" );
if ( !inNegViewTS )
{
inNegViewTS = connectComp->getElement( RT_TEXCOORD );
inNegViewTS->setName( "outNegViewTS" );
inNegViewTS->setStructName( "IN" );
inNegViewTS->setType( "float3" );
}
negViewTS = new Var( "negViewTS", "float3" );
meta->addStatement( new GenOp( " @ = normalize( @ );\r\n", new DecOp( negViewTS ), inNegViewTS ) );
}
// Get the rest of our inputs.
Var *parallaxInfo = _getUniformVar( "parallaxInfo", "float", cspPotentialPrimitive );
Var *normalMap = getNormalMapTex();
Var *bumpMapTexture = (Var*)LangElement::find("bumpMapTex");
// Call the library function to do the rest.
if (fd.features.hasFeature(MFT_IsDXTnm, getProcessIndex()))
{
if (mIsDirect3D11)
meta->addStatement(new GenOp(" @.xy += parallaxOffsetDxtnm( @, @, @.xy, @, @ );\r\n",
texCoord, bumpMapTexture, normalMap, texCoord, negViewTS, parallaxInfo));
else
meta->addStatement(new GenOp(" @.xy += parallaxOffsetDxtnm( @, @.xy, @, @ );\r\n",
texCoord, normalMap, texCoord, negViewTS, parallaxInfo));
}
else
{
if (mIsDirect3D11)
meta->addStatement(new GenOp(" @.xy += parallaxOffset( @, @, @.xy, @, @ );\r\n",
texCoord, bumpMapTexture, normalMap, texCoord, negViewTS, parallaxInfo));
else
meta->addStatement(new GenOp(" @.xy += parallaxOffset( @, @.xy, @, @ );\r\n",
texCoord, normalMap, texCoord, negViewTS, parallaxInfo));
}
// TODO: Fix second UV maybe?
output = meta;
}
ShaderFeature::Resources TerrainParallaxMapFeatGLSL::getResources( const MaterialFeatureData &fd )
{
Resources res;
// If this is the first parallax feature then
// it will generate the tangetEye vector and
// the worldToTanget transform.
if ( getProcessIndex() == 0 || !fd.features.hasFeature( MFT_TerrainParallaxMap, getProcessIndex() - 1 ) )
res.numTexReg = 4;
// If this isn't the prepass then we will
// be adding a normal map.
if ( !fd.features.hasFeature( MFT_PrePassConditioner ) )
res.numTex = 1;
return res;
}
void TerrainMacroMapFeatHLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
const S32 detailIndex = getProcessIndex();
// Grab incoming texture coords... the base map feature
// made sure this was created.
Var *inTex = (Var*)LangElement::find( "texCoord" );
AssertFatal( inTex, "The texture coord is missing!" );
// Grab the input position.
Var *inPos = (Var*)LangElement::find( "inPosition" );
if ( !inPos )
inPos = (Var*)LangElement::find( "position" );
// Get the object space eye position.
Var *eyePos = _getUniformVar( "eyePos", "float3", cspPotentialPrimitive );
MultiLine *meta = new MultiLine;
// Get the distance from the eye to this vertex.
Var *dist = (Var*)LangElement::find( "macroDist" );
if ( !dist )
{
dist = new Var;
dist->setType( "float" );
dist->setName( "macroDist" );
meta->addStatement( new GenOp( " @ = distance( @.xyz, @ );\r\n",
new DecOp( dist ), inPos, eyePos ) );
}
// grab connector texcoord register
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *outTex = connectComp->getElement( RT_TEXCOORD );
outTex->setName( String::ToString( "macroCoord%d", detailIndex ) );
outTex->setStructName( "OUT" );
outTex->setType( "float4" );
outTex->mapsToSampler = true;
// Get the detail scale and fade info.
Var *detScaleAndFade = new Var;
detScaleAndFade->setType( "float4" );
detScaleAndFade->setName( String::ToString( "macroScaleAndFade%d", detailIndex ) );
detScaleAndFade->uniform = true;
detScaleAndFade->constSortPos = cspPotentialPrimitive;
// Setup the detail coord.
meta->addStatement( new GenOp( " @.xyz = @ * @.xyx;\r\n", outTex, inTex, detScaleAndFade ) );
// And sneak the detail fade thru the w detailCoord.
meta->addStatement( new GenOp( " @.w = clamp( ( @.z - @ ) * @.w, 0.0, 1.0 );\r\n",
outTex, detScaleAndFade, dist, detScaleAndFade ) );
output = meta;
}
Var* TerrainFeatHLSL::_getMacroIdStrengthParallax()
{
String name( String::ToString( "macroIdStrengthParallax%d", getProcessIndex() ) );
Var *detailInfo = (Var*)LangElement::find( name );
if ( !detailInfo )
{
detailInfo = new Var;
detailInfo->setType( "float3" );
detailInfo->setName( name );
detailInfo->uniform = true;
detailInfo->constSortPos = cspPotentialPrimitive;
}
return detailInfo;
}
Var* TerrainFeatGLSL::_getInDetailCoord( Vector<ShaderComponent*> &componentList )
{
String name( String::ToString( "outDetCoord%d", getProcessIndex() ) );
Var *inDet = (Var*)LangElement::find( name );
if ( !inDet )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
inDet = connectComp->getElement( RT_TEXCOORD );
inDet->setName( name );
inDet->setType( "vec4" );
inDet->mapsToSampler = true;
}
return inDet;
}
ShaderFeature::Resources TerrainNormalMapFeatGLSL::getResources( const MaterialFeatureData &fd )
{
Resources res;
// We only need to process normals during the prepass.
if ( fd.features.hasFeature( MFT_PrePassConditioner ) )
{
// If this is the first normal map then it
// will generate the worldToTanget transform.
if ( !fd.features.hasFeature( MFT_TerrainNormalMap, getProcessIndex() - 1 ) )
res.numTexReg = 3;
res.numTex = 1;
}
return res;
}
Var* TerrainFeatGLSL::_getNormalMapTex()
{
String name( String::ToString( "normalMap%d", getProcessIndex() ) );
Var *normalMap = (Var*)LangElement::find( name );
if ( !normalMap )
{
normalMap = new Var;
normalMap->setType( "sampler2D" );
normalMap->setName( name );
normalMap->uniform = true;
normalMap->sampler = true;
normalMap->constNum = Var::getTexUnitNum();
}
return normalMap;
}
ShaderFeature::Resources TerrainNormalMapFeatHLSL::getResources( const MaterialFeatureData &fd )
{
Resources res;
// We only need to process normals during the prepass.
if ( fd.features.hasFeature( MFT_PrePassConditioner ) )
{
// If this is the first normal map and there
// are no parallax features then we will
// generate the worldToTanget transform.
if ( !fd.features.hasFeature( MFT_TerrainParallaxMap ) &&
( getProcessIndex() == 0 || !fd.features.hasFeature( MFT_TerrainNormalMap, getProcessIndex() - 1 ) ) )
res.numTexReg = 3;
res.numTex = 1;
}
return res;
}
ShaderFeature::Resources TerrainMacroMapFeatHLSL::getResources( const MaterialFeatureData &fd )
{
Resources res;
if ( getProcessIndex() == 0 )
{
// If this is the first detail pass then we
// samples from the layer tex.
res.numTex += 1;
}
res.numTex += 1;
// Finally we always send the detail texture
// coord to the pixel shader.
res.numTexReg += 1;
return res;
}
ShaderFeature::Resources TerrainMacroMapFeatGLSL::getResources( const MaterialFeatureData &fd )
{
Resources res;
if ( getProcessIndex() == 0 )
{
// If this is the first detail pass then we
// samples from the layer tex.
res.numTex += 1;
}
// If this isn't the prepass then we sample
// from the detail texture for diffuse coloring.
if ( !fd.features.hasFeature( MFT_PrePassConditioner ) )
res.numTex += 1;
// Finally we always send the detail texture
// coord to the pixel shader.
res.numTexReg += 1;
return res;
}
void TerrainDetailMapFeatHLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
const S32 detailIndex = getProcessIndex();
// Grab incoming texture coords... the base map feature
// made sure this was created.
Var *inTex = (Var*)LangElement::find( "texCoord" );
AssertFatal( inTex, "The texture coord is missing!" );
// Grab the input position.
Var *inPos = (Var*)LangElement::find( "inPosition" );
if ( !inPos )
inPos = (Var*)LangElement::find( "position" );
// Get the object space eye position.
Var *eyePos = _getUniformVar( "eyePos", "float3", cspPotentialPrimitive );
MultiLine *meta = new MultiLine;
// If we have parallax mapping then make sure we've sent
// the negative view vector to the pixel shader.
if ( fd.features.hasFeature( MFT_TerrainParallaxMap ) &&
!LangElement::find( "outNegViewTS" ) )
{
// Get the object to tangent transform which
// will consume 3 output registers.
Var *objToTangentSpace = getOutObjToTangentSpace( componentList, meta, fd );
// Now use a single output register to send the negative
// view vector in tangent space to the pixel shader.
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *outNegViewTS = connectComp->getElement( RT_TEXCOORD );
outNegViewTS->setName( "outNegViewTS" );
outNegViewTS->setStructName( "OUT" );
outNegViewTS->setType( "float3" );
meta->addStatement( new GenOp( " @ = mul( @, float3( @ - @.xyz ) );\r\n",
outNegViewTS, objToTangentSpace, eyePos, inPos ) );
}
// Get the distance from the eye to this vertex.
Var *dist = (Var*)LangElement::find( "dist" );
if ( !dist )
{
dist = new Var;
dist->setType( "float" );
dist->setName( "dist" );
meta->addStatement( new GenOp( " @ = distance( @.xyz, @ );\r\n",
new DecOp( dist ), inPos, eyePos ) );
}
// grab connector texcoord register
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *outTex = connectComp->getElement( RT_TEXCOORD );
outTex->setName( String::ToString( "detCoord%d", detailIndex ) );
outTex->setStructName( "OUT" );
outTex->setType( "float4" );
outTex->mapsToSampler = true;
// Get the detail scale and fade info.
Var *detScaleAndFade = new Var;
detScaleAndFade->setType( "float4" );
detScaleAndFade->setName( String::ToString( "detailScaleAndFade%d", detailIndex ) );
detScaleAndFade->uniform = true;
detScaleAndFade->constSortPos = cspPotentialPrimitive;
// Setup the detail coord.
//
// NOTE: You see here we scale the texture coord by 'xyx'
// to generate the detail coord. This y is here because
// its scale is flipped to correct for the non negative y
// in texCoord.
//
// See TerrainBaseMapFeatHLSL::processVert().
//
meta->addStatement( new GenOp( " @.xyz = @ * @.xyx;\r\n", outTex, inTex, detScaleAndFade ) );
// And sneak the detail fade thru the w detailCoord.
meta->addStatement( new GenOp( " @.w = clamp( ( @.z - @ ) * @.w, 0.0, 1.0 );\r\n",
outTex, detScaleAndFade, dist, detScaleAndFade ) );
output = meta;
}
void TerrainDetailMapFeatGLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
const U32 detailIndex = getProcessIndex();
// If this is a prepass and we don't have a
// matching normal map... we have nothing to do.
if ( fd.features.hasFeature( MFT_PrePassConditioner ) &&
!fd.features.hasFeature( MFT_TerrainNormalMap, detailIndex ) )
return;
Var *inTex = getVertTexCoord( "outTexCoord" );
MultiLine *meta = new MultiLine;
// Get the layer samples.
Var *layerSample = (Var*)LangElement::find( "layerSample" );
if ( !layerSample )
{
layerSample = new Var;
layerSample->setType( "vec4" );
layerSample->setName( "layerSample" );
// Get the layer texture var
Var *layerTex = new Var;
layerTex->setType( "sampler2D" );
layerTex->setName( "layerTex" );
layerTex->uniform = true;
layerTex->sampler = true;
layerTex->constNum = Var::getTexUnitNum();
// Read the layer texture to get the samples.
meta->addStatement( new GenOp( " @ = round( texture2D( @, @.xy ) * 255.0f );\r\n",
new DecOp( layerSample ), layerTex, inTex ) );
}
Var *layerSize = (Var*)LangElement::find( "layerSize" );
if ( !layerSize )
{
layerSize = new Var;
layerSize->setType( "float" );
layerSize->setName( "layerSize" );
layerSize->uniform = true;
layerSize->constSortPos = cspPass;
}
// Grab the incoming detail coord.
Var *inDet = _getInDetailCoord( componentList );
// Get the detail id.
Var *detailInfo = _getDetailIdStrengthParallax();
// Create the detail blend var.
Var *detailBlend = new Var;
detailBlend->setType( "float" );
detailBlend->setName( String::ToString( "detailBlend%d", detailIndex ) );
// Calculate the blend for this detail texture.
meta->addStatement( new GenOp( " @ = calcBlend( @.x, @.xy, @, @ );\r\n",
new DecOp( detailBlend ), detailInfo, inTex, layerSize, layerSample ) );
// Get a var and accumulate the blend amount.
Var *blendTotal = (Var*)LangElement::find( "blendTotal" );
if ( !blendTotal )
{
blendTotal = new Var;
blendTotal->setName( "blendTotal" );
blendTotal->setType( "float" );
meta->addStatement( new GenOp( " @ = 0.0;\r\n", new DecOp( blendTotal ) ) );
}
// Add to the blend total.
meta->addStatement( new GenOp( " @ += @;\r\n", blendTotal, detailBlend ) );
//meta->addStatement( new GenOp( " @ += @ * @.y * @.w;\r\n",
//blendTotal, detailBlend, detailInfo, inDet ) );
// Nothing more to do for a detail texture in prepass.
if ( fd.features.hasFeature( MFT_PrePassConditioner ) )
{
output = meta;
return;
}
Var *detailColor = (Var*)LangElement::find( "detailColor" );
if ( !detailColor )
{
detailColor = new Var;
detailColor->setType( "vec4" );
detailColor->setName( "detailColor" );
meta->addStatement( new GenOp( " @;\r\n", new DecOp( detailColor ) ) );
}
// Get the detail texture.
Var *detailMap = new Var;
detailMap->setType( "sampler2D" );
detailMap->setName( String::ToString( "detailMap%d", detailIndex ) );
detailMap->uniform = true;
detailMap->sampler = true;
detailMap->constNum = Var::getTexUnitNum(); // used as texture unit num here
// If we're using SM 3.0 then take advantage of
// dynamic branching to skip layers per-pixel.
if ( GFX->getPixelShaderVersion() >= 3.0f )
meta->addStatement( new GenOp( " if ( @ > 0.0f )\r\n", detailBlend ) );
meta->addStatement( new GenOp( " {\r\n" ) );
// Note that we're doing the standard greyscale detail
// map technique here which can darken and lighten the
// diffuse texture.
//
// We take two color samples and lerp between them for
// side projection layers... else a single sample.
//
if ( fd.features.hasFeature( MFT_TerrainSideProject, detailIndex ) )
{
meta->addStatement( new GenOp( " @ = ( mix( texture2D( @, @.yz ), texture2D( @, @.xz ), @.z ) * 2.0 ) - 1.0;\r\n",
detailColor, detailMap, inDet, detailMap, inDet, inTex ) );
}
else
{
meta->addStatement( new GenOp( " @ = ( texture2D( @, @.xy ) * 2.0 ) - 1.0;\r\n",
detailColor, detailMap, inDet ) );
}
meta->addStatement( new GenOp( " @ *= @.y * @.w;\r\n",
detailColor, detailInfo, inDet ) );
Var *baseColor = (Var*)LangElement::find( "baseColor" );
Var *outColor = (Var*)LangElement::find( "col" );
meta->addStatement( new GenOp( " @ = mix( @, @ + @, @ );\r\n",
outColor, outColor, baseColor, detailColor, detailBlend ) );
meta->addStatement( new GenOp( " }\r\n" ) );
output = meta;
}
void TerrainDetailMapFeatGLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
const S32 detailIndex = getProcessIndex();
Var *inTex = getVertTexCoord( "texCoord" );
MultiLine *meta = new MultiLine;
// We need the negative tangent space view vector
// as in parallax mapping we step towards the camera.
Var *negViewTS = (Var*)LangElement::find( "negViewTS" );
if ( !negViewTS &&
fd.features.hasFeature( MFT_TerrainParallaxMap ) )
{
Var *inNegViewTS = (Var*)LangElement::find( "outNegViewTS" );
if ( !inNegViewTS )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
inNegViewTS = connectComp->getElement( RT_TEXCOORD );
inNegViewTS->setName( "outNegViewTS" );
inNegViewTS->setStructName( "IN" );
inNegViewTS->setType( "vec3" );
}
negViewTS = new Var( "negViewTS", "vec3" );
meta->addStatement( new GenOp( " @ = normalize( @ );\r\n", new DecOp( negViewTS ), inNegViewTS ) );
}
// Get the layer samples.
Var *layerSample = (Var*)LangElement::find( "layerSample" );
if ( !layerSample )
{
layerSample = new Var;
layerSample->setType( "vec4" );
layerSample->setName( "layerSample" );
// Get the layer texture var
Var *layerTex = new Var;
layerTex->setType( "sampler2D" );
layerTex->setName( "layerTex" );
layerTex->uniform = true;
layerTex->sampler = true;
layerTex->constNum = Var::getTexUnitNum();
// Read the layer texture to get the samples.
meta->addStatement( new GenOp( " @ = round( tex2D( @, @.xy ) * 255.0f );\r\n",
new DecOp( layerSample ), layerTex, inTex ) );
}
Var *layerSize = (Var*)LangElement::find( "layerSize" );
if ( !layerSize )
{
layerSize = new Var;
layerSize->setType( "float" );
layerSize->setName( "layerSize" );
layerSize->uniform = true;
layerSize->constSortPos = cspPass;
}
// Grab the incoming detail coord.
Var *inDet = _getInDetailCoord( componentList );
// Get the detail id.
Var *detailInfo = _getDetailIdStrengthParallax();
// Create the detail blend var.
Var *detailBlend = new Var;
detailBlend->setType( "float" );
detailBlend->setName( String::ToString( "detailBlend%d", detailIndex ) );
// Calculate the blend for this detail texture.
meta->addStatement( new GenOp( " @ = calcBlend( @.x, @.xy, @, @ );\r\n",
new DecOp( detailBlend ), detailInfo, inTex, layerSize, layerSample ) );
// New terrain
Var *lerpBlend = (Var*)LangElement::find("lerpBlend");
if (!lerpBlend)
{
lerpBlend = new Var;
lerpBlend->setType("float");
lerpBlend->setName("lerpBlend");
lerpBlend->uniform = true;
lerpBlend->constSortPos = cspPrimitive;
}
Var *blendDepth = (Var*)LangElement::find(String::ToString("blendDepth%d", detailIndex));
if (!blendDepth)
{
blendDepth = new Var;
blendDepth->setType("float");
blendDepth->setName(String::ToString("blendDepth%d", detailIndex));
blendDepth->uniform = true;
blendDepth->constSortPos = cspPrimitive;
}
ShaderFeature::OutputTarget target = ShaderFeature::DefaultTarget;
if(fd.features.hasFeature( MFT_DeferredTerrainDetailMap ))
target= ShaderFeature::RenderTarget1;
Var *outColor = (Var*)LangElement::find( getOutputTargetVarName(target) );
if (!outColor)
{
// create color var
outColor = new Var;
outColor->setType("float4");
outColor->setName("col");
outColor->setStructName("OUT");
meta->addStatement(new GenOp(" @;\r\n", outColor));
}
Var *detailColor = (Var*)LangElement::find("detailColor");
if (!detailColor)
{
detailColor = new Var;
detailColor->setType("float4");
detailColor->setName("detailColor");
meta->addStatement(new GenOp(" @;\r\n", new DecOp(detailColor)));
}
// Get the detail texture.
Var *detailMap = new Var;
detailMap->setType("sampler2D");
detailMap->setName(String::ToString("detailMap%d", detailIndex));
detailMap->uniform = true;
detailMap->sampler = true;
detailMap->constNum = Var::getTexUnitNum(); // used as texture unit num here
// Get the normal map texture.
Var *normalMap = _getNormalMapTex();
// Issue happens somewhere here -----
// Sample the normal map.
//
// We take two normal samples and lerp between them for
// side projection layers... else a single sample.
LangElement *texOp;
// Note that we're doing the standard greyscale detail
// map technique here which can darken and lighten the
// diffuse texture.
//
// We take two color samples and lerp between them for
// side projection layers... else a single sample.
//
if (fd.features.hasFeature(MFT_TerrainSideProject, detailIndex))
{
meta->addStatement(new GenOp(" @ = ( lerp( tex2D( @, @.yz ), tex2D( @, @.xz ), @.z ) * 2.0 ) - 1.0;\r\n",
detailColor, detailMap, inDet, detailMap, inDet, inTex));
texOp = new GenOp("lerp( tex2D( @, @.yz ), tex2D( @, @.xz ), @.z )",
normalMap, inDet, normalMap, inDet, inTex);
}
else
{
meta->addStatement(new GenOp(" @ = ( tex2D( @, @.xy ) * 2.0 ) - 1.0;\r\n",
detailColor, detailMap, inDet));
texOp = new GenOp("tex2D(@, @.xy)", normalMap, inDet);
}
// New terrain
// Get a var and accumulate the blend amount.
Var *blendTotal = (Var*)LangElement::find( "blendTotal" );
if ( !blendTotal )
{
blendTotal = new Var;
blendTotal->setName( "blendTotal" );
blendTotal->setType( "float" );
meta->addStatement( new GenOp( " @ = 0;\r\n", new DecOp( blendTotal ) ) );
}
// Add to the blend total.
meta->addStatement( new GenOp( " @ += @;\r\n", blendTotal, detailBlend ) );
// If we had a parallax feature... then factor in the parallax
// amount so that it fades out with the layer blending.
if ( fd.features.hasFeature( MFT_TerrainParallaxMap, detailIndex ) )
{
// Get the rest of our inputs.
Var *normalMap = _getNormalMapTex();
// Call the library function to do the rest.
if (fd.features.hasFeature(MFT_IsDXTnm, detailIndex))
{
meta->addStatement(new GenOp(" @.xy += parallaxOffsetDxtnm( @, @.xy, @, @.z * @ );\r\n",
inDet, normalMap, inDet, negViewTS, detailInfo, detailBlend));
}
else
{
meta->addStatement(new GenOp(" @.xy += parallaxOffset( @, @.xy, @, @.z * @ );\r\n",
inDet, normalMap, inDet, negViewTS, detailInfo, detailBlend));
}
}
// If we're using SM 3.0 then take advantage of
// dynamic branching to skip layers per-pixel.
if ( GFX->getPixelShaderVersion() >= 3.0f )
meta->addStatement( new GenOp( " if ( @ > 0.0f )\r\n", detailBlend ) );
meta->addStatement( new GenOp( " {\r\n" ) );
// Note that we're doing the standard greyscale detail
// map technique here which can darken and lighten the
// diffuse texture.
//
// We take two color samples and lerp between them for
// side projection layers... else a single sample.
//
if ( fd.features.hasFeature( MFT_TerrainSideProject, detailIndex ) )
{
meta->addStatement( new GenOp( " @ = ( lerp( tex2D( @, @.yz ), tex2D( @, @.xz ), @.z ) * 2.0 ) - 1.0;\r\n",
detailColor, detailMap, inDet, detailMap, inDet, inTex ) );
}
else
{
meta->addStatement( new GenOp( " @ = ( tex2D( @, @.xy ) * 2.0 ) - 1.0;\r\n",
detailColor, detailMap, inDet ) );
}
meta->addStatement( new GenOp( " @ *= @.y * @.w;\r\n",
detailColor, detailInfo, inDet ) );
meta->addStatement( new GenOp( " @ += @ * @;\r\n",
outColor, detailColor, detailBlend));
meta->addStatement( new GenOp( " }\r\n" ) );
output = meta;
}
/*
* GetImageMemInfo
*/
BOOL GetImageMemInfo( DWORD procid, char *imagename, MemByType *imageinfo ) {
DWORD index;
DWORD i;
BOOL ret;
char buf[ _MAX_PATH ];
PERF_COUNTER_DEFINITION *counter;
PERF_INSTANCE_DEFINITION *inst;
ret = FALSE;
beginRead( FALSE );
beginRead( TRUE );
initObj( &costlyData, &imageObject, N_IMAGE );
initObj( ®Data, &processObject, N_PROCESS );
if( imageObject == NULL || processObject == NULL ) goto GETIMAGEMEM_ERROR;
inst = getFirstInstance( imageObject );
if( !getProcessIndex( procid, &index ) ) goto GETIMAGEMEM_ERROR;
for( i=0; i < imageObject->NumInstances; i += 1 ) {
if( inst == NULL ) goto GETIMAGEMEM_ERROR;
if( inst->ParentObjectInstance == index ) {
wsprintf( buf, "%ls", (char *)inst + inst->NameOffset );
if( !strcmp( buf, imagename ) ) {
counter = findCounter( imageObject, N_NO_ACCESS );
if( counter == NULL ) goto GETIMAGEMEM_ERROR;
imageinfo->noaccess = getCounterDWORD( inst, counter );
counter = findCounter( imageObject, N_READ_ONLY );
if( counter == NULL ) goto GETIMAGEMEM_ERROR;
imageinfo->read = getCounterDWORD( inst, counter );
counter = findCounter( imageObject, N_READ_WRITE );
if( counter == NULL ) goto GETIMAGEMEM_ERROR;
imageinfo->write = getCounterDWORD( inst, counter );
counter = findCounter( imageObject, N_WRITE_COPY );
if( counter == NULL ) goto GETIMAGEMEM_ERROR;
imageinfo->copy = getCounterDWORD( inst, counter );
counter = findCounter( imageObject, N_EXEC );
if( counter == NULL ) goto GETIMAGEMEM_ERROR;
imageinfo->exec = getCounterDWORD( inst, counter );
counter = findCounter( imageObject, N_EXEC_READ );
if( counter == NULL ) goto GETIMAGEMEM_ERROR;
imageinfo->execread = getCounterDWORD( inst, counter );
counter = findCounter( imageObject, N_EXEC_WRITE );
if( counter == NULL ) goto GETIMAGEMEM_ERROR;
imageinfo->execwrite = getCounterDWORD( inst, counter );
counter = findCounter( imageObject, N_EXEC_COPY );
if( counter == NULL ) goto GETIMAGEMEM_ERROR;
imageinfo->execcopy = getCounterDWORD( inst, counter );
imageinfo->tot = imageinfo->noaccess + imageinfo->read
+ imageinfo->write + imageinfo->copy
+ imageinfo->exec + imageinfo->execread
+ imageinfo->execwrite + imageinfo->execcopy;
ret = TRUE;
break;
}
}
inst = getNextInstance( inst );
}
endRead( TRUE );
endRead( FALSE );
return( ret);
GETIMAGEMEM_ERROR:
endRead( TRUE );
endRead( FALSE );
return( FALSE );
}
void TerrainMacroMapFeatHLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
const S32 detailIndex = getProcessIndex();
Var *inTex = getVertTexCoord( "texCoord" );
MultiLine *meta = new MultiLine;
// We need the negative tangent space view vector
// as in parallax mapping we step towards the camera.
Var *negViewTS = (Var*)LangElement::find( "negViewTS" );
if ( !negViewTS &&
fd.features.hasFeature( MFT_TerrainParallaxMap ) )
{
Var *inNegViewTS = (Var*)LangElement::find( "outNegViewTS" );
if ( !inNegViewTS )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
inNegViewTS = connectComp->getElement( RT_TEXCOORD );
inNegViewTS->setName( "outNegViewTS" );
inNegViewTS->setStructName( "IN" );
inNegViewTS->setType( "float3" );
}
negViewTS = new Var( "negViewTS", "float3" );
meta->addStatement( new GenOp( " @ = normalize( @ );\r\n", new DecOp( negViewTS ), inNegViewTS ) );
}
// Get the layer samples.
Var *layerSample = (Var*)LangElement::find( "layerSample" );
if ( !layerSample )
{
layerSample = new Var;
layerSample->setType( "float4" );
layerSample->setName( "layerSample" );
// Get the layer texture var
Var *layerTex = new Var;
layerTex->setType( "sampler2D" );
layerTex->setName( "macrolayerTex" );
layerTex->uniform = true;
layerTex->sampler = true;
layerTex->constNum = Var::getTexUnitNum();
// Read the layer texture to get the samples.
if (mIsDirect3D11)
{
layerTex->setType("SamplerState");
Var *layerTexObj = new Var;
layerTexObj->setType("Texture2D");
layerTexObj->setName("macroLayerTexObj");
layerTexObj->uniform = true;
layerTexObj->texture = true;
layerTexObj->constNum = layerTex->constNum;
meta->addStatement(new GenOp(" @ = round( @.Sample( @, @.xy ) * 255.0f );\r\n",
new DecOp(layerSample), layerTexObj, layerTex, inTex));
}
else
meta->addStatement(new GenOp(" @ = round( tex2D( @, @.xy ) * 255.0f );\r\n",
new DecOp(layerSample), layerTex, inTex));
}
Var *layerSize = (Var*)LangElement::find( "layerSize" );
if ( !layerSize )
{
layerSize = new Var;
layerSize->setType( "float" );
layerSize->setName( "layerSize" );
layerSize->uniform = true;
layerSize->constSortPos = cspPass;
}
// Grab the incoming detail coord.
Var *inDet = _getInMacroCoord( componentList );
// Get the detail id.
Var *detailInfo = _getMacroIdStrengthParallax();
// Create the detail blend var.
Var *detailBlend = new Var;
detailBlend->setType( "float" );
detailBlend->setName( String::ToString( "macroBlend%d", detailIndex ) );
// Calculate the blend for this detail texture.
meta->addStatement( new GenOp( " @ = calcBlend( @.x, @.xy, @, @ );\r\n",
new DecOp( detailBlend ), detailInfo, inTex, layerSize, layerSample ) );
// Get a var and accumulate the blend amount.
Var *blendTotal = (Var*)LangElement::find( "blendTotal" );
if ( !blendTotal )
{
blendTotal = new Var;
blendTotal->setName( "blendTotal" );
blendTotal->setType( "float" );
meta->addStatement( new GenOp( " @ = 0;\r\n", new DecOp( blendTotal ) ) );
}
// Add to the blend total.
meta->addStatement(new GenOp(" @ = max( @, @ );\r\n", blendTotal, blendTotal, detailBlend));
Var *detailColor = (Var*)LangElement::find( "macroColor" );
if ( !detailColor )
{
detailColor = new Var;
detailColor->setType( "float4" );
detailColor->setName( "macroColor" );
meta->addStatement( new GenOp( " @;\r\n", new DecOp( detailColor ) ) );
}
// Get the detail texture.
Var *detailMap = new Var;
detailMap->setType( "sampler2D" );
detailMap->setName( String::ToString( "macroMap%d", detailIndex ) );
detailMap->uniform = true;
detailMap->sampler = true;
detailMap->constNum = Var::getTexUnitNum(); // used as texture unit num here
//Create texture object for directx 11
Var *detailTex = NULL;
if (mIsDirect3D11)
{
detailMap->setType("SamplerState");
detailTex = new Var;
detailTex->setName(String::ToString("macroMapTex%d", detailIndex));
detailTex->setType("Texture2D");
detailTex->uniform = true;
detailTex->texture = true;
detailTex->constNum = detailMap->constNum;
}
// If we're using SM 3.0 then take advantage of
// dynamic branching to skip layers per-pixel.
if ( GFX->getPixelShaderVersion() >= 3.0f )
meta->addStatement( new GenOp( " if ( @ > 0.0f )\r\n", detailBlend ) );
meta->addStatement( new GenOp( " {\r\n" ) );
// Note that we're doing the standard greyscale detail
// map technique here which can darken and lighten the
// diffuse texture.
//
// We take two color samples and lerp between them for
// side projection layers... else a single sample.
//
if (fd.features.hasFeature(MFT_TerrainSideProject, detailIndex))
{
if (mIsDirect3D11)
{
meta->addStatement(new GenOp(" @ = ( lerp( @.Sample( @, @.yz ), @.Sample( @, @.xz ), @.z ) * 2.0 ) - 1.0;\r\n",
detailColor, detailTex, detailMap, inDet, detailTex, detailMap, inDet, inTex));
}
else
meta->addStatement(new GenOp(" @ = ( lerp( tex2D( @, @.yz ), tex2D( @, @.xz ), @.z ) * 2.0 ) - 1.0;\r\n",
detailColor, detailMap, inDet, detailMap, inDet, inTex));
}
else
{
if (mIsDirect3D11)
meta->addStatement(new GenOp(" @ = ( @.Sample( @, @.xy ) * 2.0 ) - 1.0;\r\n",
detailColor, detailTex, detailMap, inDet));
else
meta->addStatement(new GenOp(" @ = ( tex2D( @, @.xy ) * 2.0 ) - 1.0;\r\n",
detailColor, detailMap, inDet));
}
meta->addStatement( new GenOp( " @ *= @.y * @.w;\r\n",
detailColor, detailInfo, inDet ) );
ShaderFeature::OutputTarget target = ShaderFeature::DefaultTarget;
if(fd.features.hasFeature(MFT_DeferredTerrainMacroMap))
target= ShaderFeature::RenderTarget1;
Var *outColor = (Var*)LangElement::find( getOutputTargetVarName(target) );
meta->addStatement(new GenOp(" @ += @ * @;\r\n",
outColor, detailColor, detailBlend));
meta->addStatement( new GenOp( " }\r\n" ) );
output = meta;
}
void TerrainMacroMapFeatGLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
const U32 detailIndex = getProcessIndex();
Var *inTex = getVertTexCoord( "texCoord" );
MultiLine *meta = new MultiLine;
// We need the negative tangent space view vector
// as in parallax mapping we step towards the camera.
Var *negViewTS = (Var*)LangElement::find( "negViewTS" );
if ( !negViewTS &&
fd.features.hasFeature( MFT_TerrainParallaxMap ) )
{
Var *inNegViewTS = (Var*)LangElement::find( "outNegViewTS" );
if ( !inNegViewTS )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
inNegViewTS = connectComp->getElement( RT_TEXCOORD );
inNegViewTS->setName( "outNegViewTS" );
inNegViewTS->setStructName( "IN" );
inNegViewTS->setType( "vec3" );
}
negViewTS = new Var( "negViewTS", "vec3" );
meta->addStatement( new GenOp( " @ = normalize( @ );\r\n", new DecOp( negViewTS ), inNegViewTS ) );
}
// Get the layer samples.
Var *layerSample = (Var*)LangElement::find( "layerSample" );
if ( !layerSample )
{
layerSample = new Var;
layerSample->setType( "vec4" );
layerSample->setName( "layerSample" );
// Get the layer texture var
Var *layerTex = new Var;
layerTex->setType( "sampler2D" );
layerTex->setName( "macrolayerTex" );
layerTex->uniform = true;
layerTex->sampler = true;
layerTex->constNum = Var::getTexUnitNum();
// Read the layer texture to get the samples.
meta->addStatement( new GenOp( " @ = round( tex2D( @, @.xy ) * 255.0f );\r\n",
new DecOp( layerSample ), layerTex, inTex ) );
}
Var *layerSize = (Var*)LangElement::find( "layerSize" );
if ( !layerSize )
{
layerSize = new Var;
layerSize->setType( "float" );
layerSize->setName( "layerSize" );
layerSize->uniform = true;
layerSize->constSortPos = cspPass;
}
// Grab the incoming detail coord.
Var *inDet = _getInMacroCoord( componentList );
// Get the detail id.
Var *detailInfo = _getMacroIdStrengthParallax();
// Create the detail blend var.
Var *detailBlend = new Var;
detailBlend->setType( "float" );
detailBlend->setName( String::ToString( "macroBlend%d", detailIndex ) );
// Calculate the blend for this detail texture.
meta->addStatement( new GenOp( " @ = calcBlend( @.x, @.xy, @, @ );\r\n",
new DecOp( detailBlend ), detailInfo, inTex, layerSize, layerSample ) );
// Get a var and accumulate the blend amount.
Var *blendTotal = (Var*)LangElement::find( "blendTotal" );
if ( !blendTotal )
{
blendTotal = new Var;
//blendTotal->setName( "blendTotal" );
blendTotal->setName( "blendTotal" );
blendTotal->setType( "float" );
meta->addStatement( new GenOp( " @ = 0;\r\n", new DecOp( blendTotal ) ) );
}
// Add to the blend total.
meta->addStatement( new GenOp( " @ = max( @, @ );\r\n", blendTotal, blendTotal, detailBlend ) );
// If this is a prepass then we skip color.
if ( fd.features.hasFeature( MFT_PrePassConditioner ) )
{
// Check to see if we have a gbuffer normal.
Var *gbNormal = (Var*)LangElement::find( "gbNormal" );
// If we have a gbuffer normal and we don't have a
// normal map feature then we need to lerp in a
// default normal else the normals below this layer
// will show thru.
if ( gbNormal &&
!fd.features.hasFeature( MFT_TerrainNormalMap, detailIndex ) )
{
Var *viewToTangent = getInViewToTangent( componentList );
meta->addStatement( new GenOp( " @ = lerp( @, tGetMatrix3Row(@, 2), min( @, @.w ) );\r\n",
gbNormal, gbNormal, viewToTangent, detailBlend, inDet ) );
}
output = meta;
return;
}
Var *detailColor = (Var*)LangElement::find( "macroColor" );
if ( !detailColor )
{
detailColor = new Var;
detailColor->setType( "vec4" );
detailColor->setName( "macroColor" );
meta->addStatement( new GenOp( " @;\r\n", new DecOp( detailColor ) ) );
}
// Get the detail texture.
Var *detailMap = new Var;
detailMap->setType( "sampler2D" );
detailMap->setName( String::ToString( "macroMap%d", detailIndex ) );
detailMap->uniform = true;
detailMap->sampler = true;
detailMap->constNum = Var::getTexUnitNum(); // used as texture unit num here
// If we're using SM 3.0 then take advantage of
// dynamic branching to skip layers per-pixel.
if ( GFX->getPixelShaderVersion() >= 3.0f )
meta->addStatement( new GenOp( " if ( @ > 0.0f )\r\n", detailBlend ) );
meta->addStatement( new GenOp( " {\r\n" ) );
// Note that we're doing the standard greyscale detail
// map technique here which can darken and lighten the
// diffuse texture.
//
// We take two color samples and lerp between them for
// side projection layers... else a single sample.
//
if ( fd.features.hasFeature( MFT_TerrainSideProject, detailIndex ) )
{
meta->addStatement( new GenOp( " @ = ( lerp( tex2D( @, @.yz ), tex2D( @, @.xz ), @.z ) * 2.0 ) - 1.0;\r\n",
detailColor, detailMap, inDet, detailMap, inDet, inTex ) );
}
else
{
meta->addStatement( new GenOp( " @ = ( tex2D( @, @.xy ) * 2.0 ) - 1.0;\r\n",
detailColor, detailMap, inDet ) );
}
meta->addStatement( new GenOp( " @ *= @.y * @.w;\r\n",
detailColor, detailInfo, inDet ) );
Var *baseColor = (Var*)LangElement::find( "baseColor" );
Var *outColor = (Var*)LangElement::find( "col" );
meta->addStatement( new GenOp( " @ = lerp( @, @ + @, @ );\r\n",
outColor, outColor, outColor, detailColor, detailBlend ) );
//outColor, outColor, baseColor, detailColor, detailBlend ) );
meta->addStatement( new GenOp( " }\r\n" ) );
output = meta;
}
void TerrainNormalMapFeatHLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
MultiLine *meta = new MultiLine;
Var *viewToTangent = getInViewToTangent( componentList );
// This var is read from GBufferConditionerHLSL and
// used in the prepass output.
Var *gbNormal = (Var*)LangElement::find( "gbNormal" );
if ( !gbNormal )
{
gbNormal = new Var;
gbNormal->setName( "gbNormal" );
gbNormal->setType( "float3" );
meta->addStatement( new GenOp( " @ = @[2];\r\n", new DecOp( gbNormal ), viewToTangent ) );
}
const S32 normalIndex = getProcessIndex();
Var *detailBlend = (Var*)LangElement::find( String::ToString( "detailBlend%d", normalIndex ) );
AssertFatal( detailBlend, "The detail blend is missing!" );
// If we're using SM 3.0 then take advantage of
// dynamic branching to skip layers per-pixel.
if ( GFX->getPixelShaderVersion() >= 3.0f )
meta->addStatement( new GenOp( " if ( @ > 0.0f )\r\n", detailBlend ) );
meta->addStatement( new GenOp( " {\r\n" ) );
// Get the normal map texture.
Var *normalMap = _getNormalMapTex();
/// Get the texture coord.
Var *inDet = _getInDetailCoord( componentList );
Var *inTex = getVertTexCoord( "texCoord" );
// Sample the normal map.
//
// We take two normal samples and lerp between them for
// side projection layers... else a single sample.
LangElement *texOp;
if (mIsDirect3D11)
{
String name(String::ToString("normalMapTex%d", getProcessIndex()));
Var *normalMapTex = (Var*)LangElement::find(name);
if (!normalMapTex)
{
normalMapTex = new Var;
normalMapTex->setName(String::ToString("normalMapTex%d", getProcessIndex()));
normalMapTex->setType("Texture2D");
normalMapTex->uniform = true;
normalMapTex->texture = true;
normalMapTex->constNum = normalMap->constNum;
}
if (fd.features.hasFeature(MFT_TerrainSideProject, normalIndex))
{
texOp = new GenOp("lerp( @.Sample( @, @.yz ), @.Sample( @, @.xz ), @.z )",
normalMapTex, normalMap, inDet, normalMapTex, normalMap, inDet, inTex);
}
else
texOp = new GenOp("@.Sample(@, @.xy)", normalMapTex, normalMap, inDet);
}
else
{
if (fd.features.hasFeature(MFT_TerrainSideProject, normalIndex))
{
texOp = new GenOp("lerp( tex2D( @, @.yz ), tex2D( @, @.xz ), @.z )",
normalMap, inDet, normalMap, inDet, inTex);
}
else
texOp = new GenOp("tex2D(@, @.xy)", normalMap, inDet);
}
// create bump normal
Var *bumpNorm = new Var;
bumpNorm->setName( "bumpNormal" );
bumpNorm->setType( "float4" );
LangElement *bumpNormDecl = new DecOp( bumpNorm );
meta->addStatement( expandNormalMap( texOp, bumpNormDecl, bumpNorm, fd ) );
// Normalize is done later...
// Note: The reverse mul order is intentional. Affine matrix.
meta->addStatement( new GenOp( " @ = lerp( @, mul( @.xyz, @ ), min( @, @.w ) );\r\n",
gbNormal, gbNormal, bumpNorm, viewToTangent, detailBlend, inDet ) );
// End the conditional block.
meta->addStatement( new GenOp( " }\r\n" ) );
// If this is the last normal map then we
// can test to see the total blend value
// to see if we should clip the result.
//if ( fd.features.getNextFeatureIndex( MFT_TerrainNormalMap, normalIndex ) == -1 )
//meta->addStatement( new GenOp( " clip( @ - 0.0001f );\r\n", blendTotal ) );
output = meta;
}
void TerrainDetailMapFeatGLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
const U32 detailIndex = getProcessIndex();
// If this is a prepass and we don't have a
// matching normal map... we have nothing to do.
if ( fd.features.hasFeature( MFT_PrePassConditioner ) &&
!fd.features.hasFeature( MFT_TerrainNormalMap, detailIndex ) )
return;
// Grab incoming texture coords... the base map feature
// made sure this was created.
Var *inTex = (Var*)LangElement::find( "texCoord" );
AssertFatal( inTex, "The texture coord is missing!" );
// Grab the input position.
Var *inPos = (Var*)LangElement::find( "inPosition" );
if ( !inPos )
inPos = (Var*)LangElement::find( "position" );
// Get the object space eye position.
Var *eyePos = _getUniformVar( "eyePos", "vec3", cspPotentialPrimitive );
MultiLine *meta = new MultiLine;
// Get the distance from the eye to this vertex.
Var *dist = (Var*)LangElement::find( "dist" );
if ( !dist )
{
dist = new Var;
dist->setType( "float" );
dist->setName( "dist" );
meta->addStatement( new GenOp( " @ = distance( @.xyz, @ );\r\n",
new DecOp( dist ), inPos, eyePos ) );
}
// grab connector texcoord register
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *outTex = connectComp->getElement( RT_TEXCOORD );
outTex->setName( String::ToString( "outDetCoord%d", detailIndex ) );
outTex->setType( "vec4" );
outTex->mapsToSampler = true;
// Get the detail scale and fade info.
Var *detScaleAndFade = new Var;
detScaleAndFade->setType( "vec4" );
detScaleAndFade->setName( String::ToString( "detailScaleAndFade%d", detailIndex ) );
detScaleAndFade->uniform = true;
detScaleAndFade->constSortPos = cspPotentialPrimitive;
// Setup the detail coord.
//
// NOTE: You see here we scale the texture coord by 'xyx'
// to generate the detail coord. This y is here because
// its scale is flipped to correct for the non negative y
// in texCoord.
//
// See TerrainBaseMapFeatHLSL::processVert().
//
meta->addStatement( new GenOp( " @.xyz = @ * @.xyx;\r\n", outTex, inTex, detScaleAndFade ) );
// And sneak the detail fade thru the w detailCoord.
meta->addStatement( new GenOp( " @.w = clamp( ( @.z - @ ) * @.w, 0.0, 1.0 );\r\n",
outTex, detScaleAndFade, dist, detScaleAndFade ) );
output = meta;
}