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;
}
