void ParaboloidVertTransformHLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
MultiLine *meta = new MultiLine;
const bool isSinglePass = fd.features[ MFT_IsSinglePassParaboloid ];
if ( isSinglePass )
{
// Cull things on the back side of the map.
Var *isBack = connectComp->getElement( RT_TEXCOORD );
isBack->setName( "isBack" );
isBack->setStructName( "IN" );
isBack->setType( "float" );
meta->addStatement( new GenOp( " clip( abs( @ ) - 0.999 );\r\n", isBack ) );
}
// Cull pixels outside of the valid paraboloid.
Var *posXY = connectComp->getElement( RT_TEXCOORD );
posXY->setName( "posXY" );
posXY->setStructName( "IN" );
posXY->setType( "float2" );
meta->addStatement( new GenOp( " clip( 1.0 - abs(@.x) );\r\n", posXY ) );
output = meta;
}
void NormalsOutFeatGLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
// If we have normal maps then we can count
// on it to generate the world space normal.
if ( fd.features[MFT_NormalMap] )
return;
MultiLine *meta = new MultiLine;
output = meta;
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *outNormal = connectComp->getElement( RT_TEXCOORD );
outNormal->setName( "wsNormal" );
outNormal->setStructName( "OUT" );
outNormal->setType( "vec3" );
outNormal->mapsToSampler = false;
// Find the incoming vertex normal.
Var *inNormal = (Var*)LangElement::find( "normal" );
if ( inNormal )
{
// Transform the normal to world space.
Var *objTrans = getObjTrans( componentList, fd.features[MFT_UseInstancing], meta );
meta->addStatement( new GenOp( " @ = tMul( @, normalize( vec4(@, 0.0) ) ).xyz;\r\n", outNormal, objTrans, inNormal ) );
}
else
{
// If we don't have a vertex normal... just pass the
// camera facing normal to the pixel shader.
meta->addStatement( new GenOp( " @ = float3( 0.0, 0.0, 1.0 );\r\n", outNormal ) );
}
}
void GBufferConditionerGLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
output = NULL;
if( !fd.features[MFT_NormalMap] )
{
// grab incoming vert normal
Var *inNormal = (Var*) LangElement::find( "normal" );
AssertFatal( inNormal, "Something went bad with ShaderGen. The normal should be already defined." );
// grab output for gbuffer normal
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *outNormal = connectComp->getElement( RT_TEXCOORD );
outNormal->setName( "gbNormal" );
outNormal->setType( "vec3" );
// create objToWorld variable
Var *objToWorld = (Var*) LangElement::find( "objTrans" );
if( !objToWorld )
{
objToWorld = new Var;
objToWorld->setType( "mat4" );
objToWorld->setName( "objTrans" );
objToWorld->uniform = true;
objToWorld->constSortPos = cspPrimitive;
}
// Kick out the world-space normal
LangElement *statement = new GenOp( " @ = vec3(@ * vec4(normalize(@), 0.0));\r\n", outNormal, objToWorld, inNormal );
output = statement;
}
}
void EyeSpaceDepthOutHLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
MultiLine *meta = new MultiLine;
output = meta;
// grab output
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *outWSEyeVec = connectComp->getElement( RT_TEXCOORD );
outWSEyeVec->setName( "wsEyeVec" );
outWSEyeVec->setStructName( "OUT" );
// grab incoming vert position
Var *wsPosition = new Var( "depthPos", "float3" );
getWsPosition( componentList, fd.features[MFT_UseInstancing], meta, new DecOp( wsPosition ) );
Var *eyePos = (Var*)LangElement::find( "eyePosWorld" );
if( !eyePos )
{
eyePos = new Var;
eyePos->setType("float3");
eyePos->setName("eyePosWorld");
eyePos->uniform = true;
eyePos->constSortPos = cspPass;
}
meta->addStatement( new GenOp( " @ = float4( @.xyz - @, 1 );\r\n", outWSEyeVec, wsPosition, eyePos ) );
}
void TerrainParallaxMapFeatGLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
MultiLine *meta = new MultiLine;
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->setType( "vec3" );
}
negViewTS = new Var( "negViewTS", "vec3" );
meta->addStatement( new GenOp( " @ = normalize( @ );\r\n", new DecOp( negViewTS ), inNegViewTS ) );
}
// Get the rest of our inputs.
Var *detailInfo = _getDetailIdStrengthParallax();
Var *normalMap = _getNormalMapTex();
Var *texCoord = _getInDetailCoord( componentList );
// Call the library function to do the rest.
meta->addStatement( new GenOp( " @.xy += parallaxOffset( @, @.xy, @, @.z );\r\n",
texCoord, normalMap, texCoord, negViewTS, detailInfo ) );
output = meta;
}
void TerrainParallaxMapFeatGLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
if ( LangElement::find( "outNegViewTS" ) )
return;
MultiLine *meta = new MultiLine;
// Grab the input position.
Var *inPos = (Var*)LangElement::find( "inPosition" );
if ( !inPos )
inPos = (Var*)LangElement::find( "position" );
// Get the object space eye position and the
// object to tangent transform.
Var *eyePos = _getUniformVar( "eyePos", "vec3" , cspPotentialPrimitive );
Var *objToTangentSpace = getOutObjToTangentSpace( componentList, meta,fd );
// Now 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->setType( "vec3" );
meta->addStatement( new GenOp( " @ = @ * vec3( @ - @.xyz );\r\n",
outNegViewTS, objToTangentSpace, eyePos, inPos ) );
output = meta;
}
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;
}
void EyeSpaceDepthOutHLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
MultiLine *meta = new MultiLine;
// grab connector position
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *wsEyeVec = connectComp->getElement( RT_TEXCOORD );
wsEyeVec->setName( "wsEyeVec" );
wsEyeVec->setStructName( "IN" );
wsEyeVec->setType( "float4" );
wsEyeVec->mapsToSampler = false;
wsEyeVec->uniform = false;
// get shader constants
Var *vEye = new Var;
vEye->setType("float3");
vEye->setName("vEye");
vEye->uniform = true;
vEye->constSortPos = cspPass;
// Expose the depth to the depth format feature
Var *depthOut = new Var;
depthOut->setType("float");
depthOut->setName(getOutputVarName());
LangElement *depthOutDecl = new DecOp( depthOut );
meta->addStatement( new GenOp( "#ifndef CUBE_SHADOW_MAP\r\n" ) );
if (fd.features.hasFeature(MFT_TerrainBaseMap))
meta->addStatement(new GenOp(" @ =min(0.9999, dot(@, (@.xyz / @.w)));\r\n", depthOutDecl, vEye, wsEyeVec, wsEyeVec));
else
meta->addStatement(new GenOp(" @ = dot(@, (@.xyz / @.w));\r\n", depthOutDecl, vEye, wsEyeVec, wsEyeVec));
meta->addStatement( new GenOp( "#else\r\n" ) );
Var *farDist = (Var*)Var::find( "oneOverFarplane" );
if ( !farDist )
{
farDist = new Var;
farDist->setType("float4");
farDist->setName("oneOverFarplane");
farDist->uniform = true;
farDist->constSortPos = cspPass;
}
meta->addStatement( new GenOp( " @ = length( @.xyz / @.w ) * @.x;\r\n", depthOutDecl, wsEyeVec, wsEyeVec, farDist ) );
meta->addStatement( new GenOp( "#endif\r\n" ) );
// If there isn't an output conditioner for the pre-pass, than just write
// out the depth to rgba and return.
if( !fd.features[MFT_PrePassConditioner] )
meta->addStatement( new GenOp( " @;\r\n", assignColor( new GenOp( "float4(@.rrr,1)", depthOut ), Material::None ) ) );
output = meta;
}
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;
}
void ParallaxFeatGLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
AssertFatal( GFX->getPixelShaderVersion() >= 2.0,
"ParallaxFeatGLSL::processVert - We don't support SM 1.x!" );
MultiLine *meta = new MultiLine;
// Add the texture coords.
getOutTexCoord( "texCoord",
"vec2",
true,
fd.features[MFT_TexAnim],
meta,
componentList );
// Grab the input position.
Var *inPos = (Var*)LangElement::find( "inPosition" );
if ( !inPos )
inPos = (Var*)LangElement::find( "position" );
// Get the object space eye position and the
// object to tangent space transform.
Var *eyePos = _getUniformVar( "eyePos", "vec3", cspPrimitive );
Var *objToTangentSpace = getOutObjToTangentSpace( componentList, meta, fd );
// Now 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( "vec3" );
meta->addStatement( new GenOp( " @ = tMul( @, float3( @.xyz - @ ) );\r\n",
outNegViewTS, objToTangentSpace, inPos, eyePos ) );
// TODO: I'm at a loss at why i need to flip the binormal/y coord
// to get a good view vector for parallax. Lighting works properly
// with the TS matrix as is... but parallax does not.
//
// Someone figure this out!
//
meta->addStatement( new GenOp( " @.y = [email protected];\r\n", outNegViewTS, outNegViewTS ) );
// If we have texture anim matrix the tangent
// space view vector may need to be rotated.
Var *texMat = (Var*)LangElement::find( "texMat" );
if ( texMat )
{
meta->addStatement( new GenOp( " @ = tMul(@, float4(@,0)).xyz;\r\n",
outNegViewTS, texMat, outNegViewTS ) );
}
output = meta;
}
void DepthOutHLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
// Grab the output vert.
Var *outPosition = (Var*)LangElement::find( "hpos" );
// Grab our output depth.
Var *outDepth = connectComp->getElement( RT_TEXCOORD );
outDepth->setName( "depth" );
outDepth->setStructName( "OUT" );
outDepth->setType( "float" );
output = new GenOp( " @ = @.z / @.w;\r\n", outDepth, outPosition, outPosition );
}
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;
}
void GBufferConditionerGLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
// If we have a normal map then that feature will
// take care of passing gbNormal to the pixel shader.
if ( fd.features[MFT_NormalMap] )
return;
MultiLine *meta = new MultiLine;
output = meta;
// grab incoming vert normal
Var *inNormal = (Var*) LangElement::find( "normal" );
AssertFatal( inNormal, "Something went bad with ShaderGen. The normal should be already defined." );
// grab output for gbuffer normal
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *outNormal = connectComp->getElement( RT_TEXCOORD );
outNormal->setName( "gbNormal" );
outNormal->setStructName( "OUT" );
outNormal->setType( "float3" );
if( !fd.features[MFT_ParticleNormal] )
{
// Kick out the view-space normal
// TODO: Total hack because Conditioner is directly derived
// from ShaderFeature and not from ShaderFeatureGLSL.
NamedFeatureGLSL dummy( String::EmptyString );
dummy.mInstancingFormat = mInstancingFormat;
Var *worldViewOnly = dummy.getWorldView( componentList, fd.features[MFT_UseInstancing], meta );
meta->addStatement( new GenOp(" @ = tMul(@, float4( normalize(@), 0.0 ) ).xyz;\r\n",
outNormal, worldViewOnly, inNormal ) );
}
else
{
// Assume the particle normal generator has already put this in view space
// and normalized it
meta->addStatement( new GenOp( " @ = @;\r\n", outNormal, inNormal ) );
}
}
void EyeSpaceDepthOutHLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
// grab incoming vert position
Var *inPosition = (Var*) LangElement::find( "inPosition" );
if ( !inPosition )
inPosition = (Var*) LangElement::find( "position" );
AssertFatal( inPosition, "Something went bad with ShaderGen. The position should be already defined." );
// grab output
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *outWSEyeVec = connectComp->getElement( RT_TEXCOORD );
outWSEyeVec->setName( "wsEyeVec" );
outWSEyeVec->setStructName( "OUT" );
// create modelview variable
Var *objToWorld = (Var*) LangElement::find( "objTrans" );
if( !objToWorld )
{
objToWorld = new Var;
objToWorld->setType( "float4x4" );
objToWorld->setName( "objTrans" );
objToWorld->uniform = true;
objToWorld->constSortPos = cspPrimitive;
}
Var *eyePos = (Var*)LangElement::find( "eyePosWorld" );
if( !eyePos )
{
eyePos = new Var;
eyePos->setType("float3");
eyePos->setName("eyePosWorld");
eyePos->uniform = true;
eyePos->constSortPos = cspPass;
}
LangElement *statement = new GenOp( " @ = mul(@, float4(@.xyz,1)) - float4(@, 0.0);\r\n",
outWSEyeVec, objToWorld, inPosition, eyePos );
output = statement;
}
void GBufferConditionerGLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
// sanity
AssertFatal( fd.features[MFT_EyeSpaceDepthOut], "No depth-out feature enabled! Bad news!" );
MultiLine *meta = new MultiLine;
// grab connector normal
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *gbNormal = (Var*) LangElement::find( "gbNormal" );
if( !gbNormal )
{
gbNormal = connectComp->getElement( RT_TEXCOORD );
gbNormal->setName( "gbNormal" );
gbNormal->setType( "vec3" );
gbNormal->mapsToSampler = false;
gbNormal->uniform = false;
}
// find depth
ShaderFeature *depthFeat = FEATUREMGR->getByType( MFT_EyeSpaceDepthOut );
AssertFatal( depthFeat != NULL, "No eye space depth feature found!" );
Var *depth = (Var*) LangElement::find(depthFeat->getOutputVarName());
AssertFatal( depth, "Something went bad with ShaderGen. The depth should be already generated by the EyeSpaceDepthOut feature." );
Var *unconditionedOut = new Var;
unconditionedOut->setType("vec4");
unconditionedOut->setName("normal_depth");
LangElement *outputDecl = new DecOp( unconditionedOut );
// NOTE: We renormalize the normal here as they
// will not stay normalized during interpolation.
meta->addStatement( new GenOp(" @ = @;", outputDecl, new GenOp( "vec4(normalize(@), @)", gbNormal, depth ) ) );
meta->addStatement( assignOutput( unconditionedOut ) );
output = meta;
}
void DeferredRTLightingFeatGLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
// Skip deferred features, and use forward shading instead
if ( fd.features[MFT_ForwardShading] )
{
Parent::processVert( componentList, fd );
return;
}
// Pass screen space position to pixel shader to compute a full screen buffer uv
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *ssPos = connectComp->getElement( RT_TEXCOORD );
ssPos->setName( "screenspacePos" );
ssPos->setStructName( "OUT" );
ssPos->setType( "vec4" );
Var *outPosition = (Var*) LangElement::find( "gl_Position" );
AssertFatal( outPosition, "No gl_Position, ohnoes." );
output = new GenOp( " @ = @;\r\n", ssPos, outPosition );
}
void ShaderGen::_processPixFeatures( Vector<GFXShaderMacro> ¯os, bool macrosOnly )
{
const FeatureSet &features = mFeatureData.features;
for( U32 i=0; i < features.getCount(); i++ )
{
S32 index;
const FeatureType &type = features.getAt( i, &index );
ShaderFeature* feature = FEATUREMGR->getByType( type );
if ( feature )
{
feature->setProcessIndex( index );
feature->processPixMacros( macros, mFeatureData );
if ( macrosOnly )
continue;
feature->mInstancingFormat = &mInstancingFormat;
feature->processPix( mComponents, mFeatureData );
String line;
if ( index > -1 )
line = String::ToString( " // %s %d\r\n", feature->getName().c_str(), index );
else
line = String::ToString( " // %s\r\n", feature->getName().c_str() );
mOutput->addStatement( new GenOp( line ) );
if ( feature->getOutput() )
mOutput->addStatement( feature->getOutput() );
feature->reset();
mOutput->addStatement( new GenOp( " \r\n" ) );
}
}
ShaderConnector *connect = dynamic_cast<ShaderConnector *>( mComponents[C_CONNECTOR] );
connect->sortVars();
}
void NormalsOutFeatGLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
MultiLine *meta = new MultiLine;
output = meta;
Var *wsNormal = (Var*)LangElement::find( "wsNormal" );
if ( !wsNormal )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
wsNormal = connectComp->getElement( RT_TEXCOORD );
wsNormal->setName( "wsNormal" );
wsNormal->setStructName( "IN" );
wsNormal->setType( "vec3" );
// If we loaded the normal its our resposibility
// to normalize it... the interpolators won't.
//
// Note we cast to half here to get partial precision
// optimized code which is an acceptable loss of
// precision for normals and performs much better
// on older Geforce cards.
//
meta->addStatement( new GenOp( " @ = normalize( half3( @ ) );\r\n", wsNormal, wsNormal ) );
}
LangElement *normalOut;
Var *outColor = (Var*)LangElement::find( "col" );
if ( outColor && !fd.features[MFT_AlphaTest] )
normalOut = new GenOp( "float4( ( -@ + 1 ) * 0.5, @.a )", wsNormal, outColor );
else
normalOut = new GenOp( "float4( ( -@ + 1 ) * 0.5, 1 )", wsNormal );
meta->addStatement( new GenOp( " @;\r\n",
assignColor( normalOut, Material::None ) ) );
}
void DepthOutHLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
// grab connector position
Var *depthVar = connectComp->getElement( RT_TEXCOORD );
depthVar->setName( "depth" );
depthVar->setStructName( "IN" );
depthVar->setType( "float" );
depthVar->mapsToSampler = false;
depthVar->uniform = false;
/*
// Expose the depth to the depth format feature
Var *depthOut = new Var;
depthOut->setType("float");
depthOut->setName(getOutputVarName());
*/
LangElement *depthOut = new GenOp( "float4( @, 0, 0, 1 )", depthVar );
output = new GenOp( " @;\r\n", assignColor( depthOut, Material::None ) );
}
void ParaboloidVertTransformHLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
MultiLine *meta = new MultiLine;
// First check for an input position from a previous feature
// then look for the default vertex position.
Var *inPosition = (Var*)LangElement::find( "inPosition" );
if ( !inPosition )
inPosition = (Var*)LangElement::find( "position" );
const bool isSinglePass = fd.features[ MFT_IsSinglePassParaboloid ];
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
// Grab connector out position.
Var *outPosition = connectComp->getElement( RT_POSITION );
outPosition->setName( "hpos" );
outPosition->setStructName( "OUT" );
// Get the atlas scale.
Var *atlasScale = new Var;
atlasScale->setType( "float2" );
atlasScale->setName( "atlasScale" );
atlasScale->uniform = true;
atlasScale->constSortPos = cspPass;
// Transform into camera space
Var *worldViewOnly = getWorldView( componentList, fd.features[MFT_UseInstancing], meta );
// So what we're doing here is transforming into camera space, and
// then directly manipulate into shadowmap space.
//
// http://www.gamedev.net/reference/articles/article2308.asp
// Swizzle z and y post-transform
meta->addStatement( new GenOp( " @ = mul(@, float4(@.xyz,1)).xzyw;\r\n", outPosition, worldViewOnly, inPosition ) );
meta->addStatement( new GenOp( " float L = length(@.xyz);\r\n", outPosition ) );
if ( isSinglePass )
{
// Flip the z in the back case
Var *outIsBack = connectComp->getElement( RT_TEXCOORD );
outIsBack->setType( "float" );
outIsBack->setName( "isBack" );
outIsBack->setStructName( "OUT" );
meta->addStatement( new GenOp( " bool isBack = @.z < 0.0;\r\n", outPosition ) );
meta->addStatement( new GenOp( " @ = isBack ? -1.0 : 1.0;\r\n", outIsBack ) );
meta->addStatement( new GenOp( " if ( isBack ) @.z = [email protected];\r\n", outPosition, outPosition ) );
}
meta->addStatement( new GenOp( " @ /= L;\r\n", outPosition ) );
meta->addStatement( new GenOp( " @.z = @.z + 1.0;\r\n", outPosition, outPosition ) );
meta->addStatement( new GenOp( " @.xy /= @.z;\r\n", outPosition, outPosition ) );
// Get the light parameters.
Var *lightParams = new Var;
lightParams->setType( "float4" );
lightParams->setName( "lightParams" );
lightParams->uniform = true;
lightParams->constSortPos = cspPass;
// TODO: If we change other shadow shaders to write out
// linear depth, than fix this as well!
//
// (L - zNear)/(lightParams.x - zNear);
//
meta->addStatement( new GenOp( " @.z = L / @.x;\r\n", outPosition, lightParams ) );
meta->addStatement( new GenOp( " @.w = 1.0;\r\n", outPosition ) );
// Pass unmodified to pixel shader to allow it to clip properly.
Var *outPosXY = connectComp->getElement( RT_TEXCOORD );
outPosXY->setType( "float2" );
outPosXY->setName( "posXY" );
outPosXY->setStructName( "OUT" );
meta->addStatement( new GenOp( " @ = @.xy;\r\n", outPosXY, outPosition ) );
// Scale and offset so it shows up in the atlas properly.
meta->addStatement( new GenOp( " @.xy *= @.xy;\r\n", outPosition, atlasScale ) );
if ( isSinglePass )
meta->addStatement( new GenOp( " @.x += isBack ? 0.5 : -0.5;\r\n", outPosition ) );
else
{
Var *atlasOffset = new Var;
atlasOffset->setType( "float2" );
atlasOffset->setName( "atlasXOffset" );
atlasOffset->uniform = true;
atlasOffset->constSortPos = cspPass;
meta->addStatement( new GenOp( " @.xy += @;\r\n", outPosition, atlasOffset ) );
}
output = meta;
}
void GBufferConditionerGLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
// sanity
AssertFatal( fd.features[MFT_EyeSpaceDepthOut], "No depth-out feature enabled! Bad news!" );
MultiLine *meta = new MultiLine;
// grab connector normal
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *gbNormal = (Var*) LangElement::find( "gbNormal" );
if( !gbNormal )
{
gbNormal = connectComp->getElement( RT_TEXCOORD );
gbNormal->setName( "gbNormal" );
gbNormal->setStructName( "IN" );
gbNormal->setType( "float3" );
gbNormal->mapsToSampler = false;
gbNormal->uniform = false;
}
// find depth
ShaderFeature *depthFeat = FEATUREMGR->getByType( MFT_EyeSpaceDepthOut );
AssertFatal( depthFeat != NULL, "No eye space depth feature found!" );
Var *depth = (Var*) LangElement::find(depthFeat->getOutputVarName());
AssertFatal( depth, "Something went bad with ShaderGen. The depth should be already generated by the EyeSpaceDepthOut feature." );
Var *unconditionedOut = new Var;
unconditionedOut->setType("float4");
unconditionedOut->setName("normal_depth");
LangElement *outputDecl = new DecOp( unconditionedOut );
// If we're doing prepass blending then we need
// to steal away the alpha channel before the
// conditioner stomps on it.
Var *alphaVal = NULL;
if ( fd.features[ MFT_IsTranslucentZWrite ] )
{
alphaVal = new Var( "outAlpha", "float" );
meta->addStatement( new GenOp( " @ = col.a; // MFT_IsTranslucentZWrite\r\n", new DecOp( alphaVal ) ) );
}
// If using interlaced normals, invert the normal
if(fd.features[MFT_InterlacedPrePass])
{
// NOTE: Its safe to not call ShaderFeatureGLSL::addOutVpos() in the vertex
// shader as for SM 3.0 nothing is needed there.
Var *Vpos = (Var*) LangElement::find( "gl_Position" ); //Var *Vpos = ShaderFeatureGLSL::getInVpos( meta, componentList );
Var *iGBNormal = new Var( "interlacedGBNormal", "float3" );
meta->addStatement(new GenOp(" @ = (frac(@.y * 0.5) < 0.1 ? reflect(@, float3(0.0, -1.0, 0.0)) : @);\r\n", new DecOp(iGBNormal), Vpos, gbNormal, gbNormal));
gbNormal = iGBNormal;
}
// NOTE: We renormalize the normal here as they
// will not stay normalized during interpolation.
meta->addStatement( new GenOp(" @ = @;", outputDecl, new GenOp( "float4(normalize(@), @)", gbNormal, depth ) ) );
meta->addStatement( assignOutput( unconditionedOut ) );
// If we have an alpha var then we're doing prepass lerp blending.
if ( alphaVal )
{
Var *outColor = (Var*)LangElement::find( getOutputTargetVarName( DefaultTarget ) );
meta->addStatement( new GenOp( " @.ba = float2( 0, @ ); // MFT_IsTranslucentZWrite\r\n", outColor, alphaVal ) );
}
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;
}
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 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 TerrainBaseMapFeatHLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
MultiLine *meta = new MultiLine;
output = meta;
// Generate the incoming texture var.
Var *inTex;
{
Var *inPos = (Var*)LangElement::find( "inPosition" );
if ( !inPos )
inPos = (Var*)LangElement::find( "position" );
inTex = new Var( "texCoord", "float3" );
Var *oneOverTerrainSize = _getUniformVar( "oneOverTerrainSize", "float", cspPass );
// NOTE: The y coord here should be negative to have
// the texture maps not end up flipped which also caused
// normal and parallax mapping to be incorrect.
//
// This mistake early in development means that the layer
// id bilinear blend depends on it being that way.
//
// So instead i fixed this by flipping the base and detail
// coord y scale to compensate when rendering.
//
meta->addStatement( new GenOp( " @ = @.xyz * float3( @, @, -@ );\r\n",
new DecOp( inTex ), inPos, oneOverTerrainSize, oneOverTerrainSize, oneOverTerrainSize ) );
}
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
// Pass the texture coord to the pixel shader.
Var *outTex = connectComp->getElement( RT_TEXCOORD );
outTex->setName( "outTexCoord" );
outTex->setStructName( "OUT" );
outTex->setType( "float3" );
outTex->mapsToSampler = true;
meta->addStatement( new GenOp( " @.xy = @.xy;\r\n", outTex, inTex ) );
// If this shader has a side projected layer then we
// pass the dot product between the +Y and the normal
// thru outTexCoord.z for use in blending the textures.
if ( fd.features.hasFeature( MFT_TerrainSideProject ) )
{
Var *inNormal = (Var*)LangElement::find( "normal" );
meta->addStatement(
new GenOp( " @.z = pow( abs( dot( normalize( float3( @.x, @.y, 0 ) ), float3( 0, 1, 0 ) ) ), 10.0 );\r\n",
outTex, inNormal, inNormal ) );
}
else
meta->addStatement( new GenOp( " @.z = 0;\r\n", outTex ) );
// HACK: This is sort of lazy... we generate the tanget
// vector here so that we're sure it exists in the parallax
// and normal features which will expect "T" to exist.
//
// If this shader doesn't use it the shader compiler will
// optimize away this code.
//
Var *inTangentZ = getVertTexCoord( "tcTangentZ" );
Var *inTanget = new Var( "T", "float3" );
Var *squareSize = _getUniformVar( "squareSize", "float", cspPass );
meta->addStatement( new GenOp( " @ = normalize( float3( @, 0, @ ) );\r\n",
new DecOp( inTanget ), squareSize, inTangentZ ) );
}
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 DeferredRTLightingFeatGLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
// Skip deferred features, and use forward shading instead
if ( fd.features[MFT_ForwardShading] )
{
Parent::processPix( componentList, fd );
return;
}
MultiLine *meta = new MultiLine;
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
Var *ssPos = connectComp->getElement( RT_TEXCOORD );
ssPos->setName( "screenspacePos" );
ssPos->setStructName( "IN" );
ssPos->setType( "vec4" );
Var *uvScene = new Var;
uvScene->setType( "vec2" );
uvScene->setName( "uvScene" );
LangElement *uvSceneDecl = new DecOp( uvScene );
String rtParamName = String::ToString( "rtParams%s", "lightInfoBuffer" );
Var *rtParams = (Var*) LangElement::find( rtParamName );
if( !rtParams )
{
rtParams = new Var;
rtParams->setType( "vec4" );
rtParams->setName( rtParamName );
rtParams->uniform = true;
rtParams->constSortPos = cspPass;
}
meta->addStatement( new GenOp( " @ = @.xy / @.w;\r\n", uvSceneDecl, ssPos, ssPos ) ); // get the screen coord... its -1 to +1
meta->addStatement( new GenOp( " @ = ( @ + 1.0 ) / 2.0;\r\n", uvScene, uvScene ) ); // get the screen coord to 0 to 1
meta->addStatement( new GenOp( " @.y = 1.0 - @.y;\r\n", uvScene, uvScene ) ); // flip the y axis
meta->addStatement( new GenOp( " @ = ( @ * @.zw ) + @.xy;\r\n", uvScene, uvScene, rtParams, rtParams) ); // scale it down and offset it to the rt size
Var *lightInfoSamp = new Var;
lightInfoSamp->setType( "vec4" );
lightInfoSamp->setName( "lightInfoSample" );
// create texture var
Var *lightInfoBuffer = new Var;
lightInfoBuffer->setType( "sampler2D" );
lightInfoBuffer->setName( "lightInfoBuffer" );
lightInfoBuffer->uniform = true;
lightInfoBuffer->sampler = true;
lightInfoBuffer->constNum = Var::getTexUnitNum(); // used as texture unit num here
// Declare the RTLighting variables in this feature, they will either be assigned
// in this feature, or in the tonemap/lightmap feature
Var *d_lightcolor = new Var( "d_lightcolor", "vec3" );
meta->addStatement( new GenOp( " @;\r\n", new DecOp( d_lightcolor ) ) );
Var *d_NL_Att = new Var( "d_NL_Att", "float" );
meta->addStatement( new GenOp( " @;\r\n", new DecOp( d_NL_Att ) ) );
Var *d_specular = new Var( "d_specular", "float" );
meta->addStatement( new GenOp( " @;\r\n", new DecOp( d_specular ) ) );
// Perform the uncondition here.
String unconditionLightInfo = String::ToLower( AdvancedLightBinManager::smBufferName ) + "Uncondition";
meta->addStatement( new GenOp( avar( " %s(tex2D(@, @), @, @, @);\r\n",
unconditionLightInfo.c_str() ), lightInfoBuffer, uvScene, d_lightcolor, d_NL_Att, d_specular ) );
// If this has an interlaced pre-pass, do averaging here
if( fd.features[MFT_InterlacedPrePass] )
{
Var *oneOverTargetSize = (Var*) LangElement::find( "oneOverTargetSize" );
if( !oneOverTargetSize )
{
oneOverTargetSize = new Var;
oneOverTargetSize->setType( "vec2" );
oneOverTargetSize->setName( "oneOverTargetSize" );
oneOverTargetSize->uniform = true;
oneOverTargetSize->constSortPos = cspPass;
}
meta->addStatement( new GenOp( " float id_NL_Att, id_specular;\r\n float3 id_lightcolor;\r\n" ) );
meta->addStatement( new GenOp( avar( " %s(tex2D(@, @ + float2(0.0, @.y)), id_lightcolor, id_NL_Att, id_specular);\r\n",
unconditionLightInfo.c_str() ), lightInfoBuffer, uvScene, oneOverTargetSize ) );
meta->addStatement( new GenOp(" @ = lerp(@, id_lightcolor, 0.5);\r\n", d_lightcolor, d_lightcolor ) );
meta->addStatement( new GenOp(" @ = lerp(@, id_NL_Att, 0.5);\r\n", d_NL_Att, d_NL_Att ) );
meta->addStatement( new GenOp(" @ = lerp(@, id_specular, 0.5);\r\n", d_specular, d_specular ) );
}
// This is kind of weak sauce
if( !fd.features[MFT_VertLit] && !fd.features[MFT_ToneMap] && !fd.features[MFT_LightMap] && !fd.features[MFT_SubSurface] )
meta->addStatement( new GenOp( " @;\r\n", assignColor( new GenOp( "float4(@, 1.0)", d_lightcolor ), Material::Mul ) ) );
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;
}
