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shaderFeatureGLSL.cpp
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shaderFeatureGLSL.cpp
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//-----------------------------------------------------------------------------
// Copyright (c) 2012 GarageGames, LLC
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//-----------------------------------------------------------------------------
#include "platform/platform.h"
#include "shaderGen/GLSL/shaderFeatureGLSL.h"
#include "shaderGen/langElement.h"
#include "shaderGen/shaderOp.h"
#include "shaderGen/shaderGenVars.h"
#include "gfx/gfxDevice.h"
#include "materials/matInstance.h"
#include "materials/processedMaterial.h"
#include "materials/materialFeatureTypes.h"
#include "core/util/autoPtr.h"
#include "lighting/advanced/advancedLightBinManager.h"
LangElement * ShaderFeatureGLSL::setupTexSpaceMat( Vector<ShaderComponent*> &, // componentList
Var **texSpaceMat )
{
Var *N = (Var*) LangElement::find( "normal" );
Var *B = (Var*) LangElement::find( "B" );
Var *T = (Var*) LangElement::find( "T" );
Var *tangentW = (Var*) LangElement::find( "tangentW" );
// setup matrix var
*texSpaceMat = new Var;
(*texSpaceMat)->setType( "float3x3" );
(*texSpaceMat)->setName( "objToTangentSpace" );
MultiLine * meta = new MultiLine;
meta->addStatement( new GenOp( " @ = float3x3(1,0,0, 0,1,0, 0,0,1);\r\n", new DecOp( *texSpaceMat ) ) );
// Protect against missing normal and tangent.
if ( !N || !T )
{
meta->addStatement( new GenOp( " tSetMatrixRow(@, 0, float3( 1, 0, 0 )); tSetMatrixRow(@, 1,float3( 0, 1, 0 )); tSetMatrixRow(@,2, float3( 0, 0, 1 ));\r\n",
*texSpaceMat, *texSpaceMat, *texSpaceMat ) );
return meta;
}
meta->addStatement( new GenOp( " tSetMatrixRow(@, 0, @);\r\n", *texSpaceMat, T ) );
if ( B )
meta->addStatement( new GenOp( " tSetMatrixRow(@, 1, @);\r\n", *texSpaceMat, B ) );
else
{
if(dStricmp((char*)T->type, "vec4") == 0)
meta->addStatement( new GenOp( " tSetMatrixRow(@, 1, cross( @, normalize(@) ) * @.w);\r\n", *texSpaceMat, T, N, T ) );
else if(tangentW)
meta->addStatement( new GenOp( " tSetMatrixRow(@, 1, cross( @, normalize(@) ) * @);\r\n", *texSpaceMat, T, N, tangentW ) );
else
meta->addStatement( new GenOp( " tSetMatrixRow(@, 1, cross( @, normalize(@) ));\r\n", *texSpaceMat, T, N ) );
}
meta->addStatement( new GenOp( " tSetMatrixRow(@, 2, normalize(@));\r\n", *texSpaceMat, N ) );
return meta;
}
LangElement* ShaderFeatureGLSL::assignColor( LangElement *elem,
Material::BlendOp blend,
LangElement *lerpElem,
ShaderFeature::OutputTarget outputTarget )
{
// search for color var
Var *color = (Var*) LangElement::find( getOutputTargetVarName(outputTarget) );
if ( !color )
{
// create color var
color = new Var;
color->setType( "vec4" );
color->setName( getOutputTargetVarName( outputTarget ) );
color->setStructName( "OUT" );
return new GenOp( "@ = @", color, elem );
}
LangElement *assign;
switch ( blend )
{
case Material::Add:
assign = new GenOp( "@ += @", color, elem );
break;
case Material::Sub:
assign = new GenOp( "@ -= @", color, elem );
break;
case Material::Mul:
assign = new GenOp( "@ *= @", color, elem );
break;
case Material::AddAlpha:
assign = new GenOp( "@ += @ * @.a", color, elem, elem );
break;
case Material::LerpAlpha:
if ( !lerpElem )
lerpElem = elem;
assign = new GenOp( "@.rgb = lerp( @.rgb, (@).rgb, (@).a )", color, color, elem, lerpElem );
break;
case Material::ToneMap:
assign = new GenOp( "@ = 1.0 - exp(-1.0 * @ * @)", color, color, elem );
break;
default:
AssertFatal(false, "Unrecognized color blendOp");
// Fallthru
case Material::None:
assign = new GenOp( "@ = @", color, elem );
break;
}
return assign;
}
LangElement *ShaderFeatureGLSL::expandNormalMap( LangElement *sampleNormalOp,
LangElement *normalDecl,
LangElement *normalVar,
const MaterialFeatureData &fd )
{
MultiLine *meta = new MultiLine;
if ( fd.features.hasFeature( MFT_IsDXTnm, getProcessIndex() ) )
{
if ( fd.features[MFT_ImposterVert] )
{
// The imposter system uses object space normals and
// encodes them with the z axis in the alpha component.
meta->addStatement( new GenOp( " @ = float4( normalize( @.xyw * 2.0 - 1.0 ), 0.0 ); // Obj DXTnm\r\n", normalDecl, sampleNormalOp ) );
}
else
{
// DXT Swizzle trick
meta->addStatement( new GenOp( " @ = float4( @.ag * 2.0 - 1.0, 0.0, 0.0 ); // DXTnm\r\n", normalDecl, sampleNormalOp ) );
meta->addStatement( new GenOp( " @.z = sqrt( 1.0 - dot( @.xy, @.xy ) ); // DXTnm\r\n", normalVar, normalVar, normalVar ) );
}
}
else
{
meta->addStatement( new GenOp( " @ = @;\r\n", normalDecl, sampleNormalOp ) );
meta->addStatement( new GenOp( " @.xyz = @.xyz * 2.0 - 1.0;\r\n", normalVar, normalVar ) );
}
return meta;
}
ShaderFeatureGLSL::ShaderFeatureGLSL()
{
output = NULL;
}
Var * ShaderFeatureGLSL::getVertTexCoord( const String &name )
{
Var *inTex = NULL;
for( U32 i=0; i<LangElement::elementList.size(); i++ )
{
if( !dStrcmp( (char*)LangElement::elementList[i]->name, name.c_str() ) )
{
inTex = dynamic_cast<Var*>( LangElement::elementList[i] );
if ( inTex )
{
// NOTE: This used to do this check...
//
// dStrcmp( (char*)inTex->structName, "IN" )
//
// ... to ensure that the var was from the input
// vertex structure, but this kept some features
// ( ie. imposter vert ) from decoding their own
// coords for other features to use.
//
// If we run into issues with collisions between
// IN vars and local vars we may need to revise.
break;
}
}
}
return inTex;
}
Var* ShaderFeatureGLSL::getOutObjToTangentSpace( Vector<ShaderComponent*> &componentList,
MultiLine *meta,
const MaterialFeatureData &fd )
{
Var *outObjToTangentSpace = (Var*)LangElement::find( "objToTangentSpace" );
if ( !outObjToTangentSpace )
meta->addStatement( setupTexSpaceMat( componentList, &outObjToTangentSpace ) );
return outObjToTangentSpace;
}
Var* ShaderFeatureGLSL::getOutWorldToTangent( Vector<ShaderComponent*> &componentList,
MultiLine *meta,
const MaterialFeatureData &fd )
{
Var *outWorldToTangent = (Var*)LangElement::find( "outWorldToTangent" );
if ( outWorldToTangent )
return outWorldToTangent;
Var *worldToTangent = (Var*)LangElement::find( "worldToTangent" );
if ( !worldToTangent )
{
Var *texSpaceMat = getOutObjToTangentSpace( componentList, meta, fd );
if(!fd.features[MFT_ParticleNormal])
{
// turn obj->tangent into world->tangent
worldToTangent = new Var;
worldToTangent->setType( "float3x3" );
worldToTangent->setName( "worldToTangent" );
LangElement *worldToTangentDecl = new DecOp( worldToTangent );
// Get the world->obj transform
Var *worldToObj = (Var*)LangElement::find( "worldToObj" );
if ( !worldToObj )
{
worldToObj = new Var;
worldToObj->setName( "worldToObj" );
if ( fd.features[MFT_UseInstancing] )
{
// We just use transpose to convert the 3x3 portion of
// the object transform to its inverse.
worldToObj->setType( "float3x3" );
Var *objTrans = getObjTrans( componentList, true, meta );
meta->addStatement( new GenOp( " @ = transpose( float3x3(@) ); // Instancing!\r\n", new DecOp( worldToObj ), objTrans ) );
}
else
{
worldToObj->setType( "float4x4" );
worldToObj->uniform = true;
worldToObj->constSortPos = cspPrimitive;
}
}
// assign world->tangent transform
meta->addStatement( new GenOp( " @ = tMul( @, float3x3(@) );\r\n", worldToTangentDecl, texSpaceMat, worldToObj ) );
}
else
{
// Assume particle normal generation has set this up in the proper space
worldToTangent = texSpaceMat;
}
}
// send transform to pixel shader
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
outWorldToTangent = connectComp->getElement( RT_TEXCOORD, 1, 3 );
outWorldToTangent->setName( "outWorldToTangent" );
outWorldToTangent->setStructName( "OUT" );
outWorldToTangent->setType( "float3x3" );
meta->addStatement( new GenOp( " @ = @;\r\n", outWorldToTangent, worldToTangent ) );
return outWorldToTangent;
}
Var* ShaderFeatureGLSL::getOutViewToTangent( Vector<ShaderComponent*> &componentList,
MultiLine *meta,
const MaterialFeatureData &fd )
{
Var *outViewToTangent = (Var*)LangElement::find( "outViewToTangent" );
if ( outViewToTangent )
return outViewToTangent;
Var *viewToTangent = (Var*)LangElement::find( "viewToTangent" );
if ( !viewToTangent )
{
Var *texSpaceMat = getOutObjToTangentSpace( componentList, meta, fd );
if(!fd.features[MFT_ParticleNormal])
{
// turn obj->tangent into world->tangent
viewToTangent = new Var;
viewToTangent->setType( "float3x3" );
viewToTangent->setName( "viewToTangent" );
LangElement *viewToTangentDecl = new DecOp( viewToTangent );
// Get the view->obj transform
Var *viewToObj = getInvWorldView( componentList, fd.features[MFT_UseInstancing], meta );
// assign world->tangent transform
meta->addStatement( new GenOp( " @ = tMul( (@), float3x3(@) );\r\n", viewToTangentDecl, texSpaceMat, viewToObj ) );
}
else
{
// Assume particle normal generation has set this up in the proper space
viewToTangent = texSpaceMat;
}
}
// send transform to pixel shader
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
outViewToTangent = connectComp->getElement( RT_TEXCOORD, 1, 3 );
outViewToTangent->setName( "outViewToTangent" );
outViewToTangent->setStructName( "OUT" );
outViewToTangent->setType( "float3x3" );
meta->addStatement( new GenOp( " @ = @;\r\n", outViewToTangent, viewToTangent ) );
return outViewToTangent;
}
Var* ShaderFeatureGLSL::getOutTexCoord( const char *name,
const char *type,
bool mapsToSampler,
bool useTexAnim,
MultiLine *meta,
Vector<ShaderComponent*> &componentList )
{
String outTexName = String::ToString( "out_%s", name );
Var *texCoord = (Var*)LangElement::find( outTexName );
if ( !texCoord )
{
Var *inTex = getVertTexCoord( name );
AssertFatal( inTex, "ShaderFeatureGLSL::getOutTexCoord - Unknown vertex input coord!" );
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
texCoord = connectComp->getElement( RT_TEXCOORD );
texCoord->setName( outTexName );
texCoord->setStructName( "OUT" );
texCoord->setType( type );
texCoord->mapsToSampler = mapsToSampler;
if( useTexAnim )
{
inTex->setType( "vec4" );
// create texture mat var
Var *texMat = new Var;
texMat->setType( "float4x4" );
texMat->setName( "texMat" );
texMat->uniform = true;
texMat->constSortPos = cspPass;
// Statement allows for casting of different types which
// eliminates vector truncation problems.
String statement = String::ToString( " @ = %s(tMul(@, @).xy);\r\n", type );
meta->addStatement( new GenOp( statement , texCoord, texMat, inTex ) );
}
else
{
// Statement allows for casting of different types which
// eliminates vector truncation problems.
String statement = String::ToString( " @ = %s(@);\r\n", type );
meta->addStatement( new GenOp( statement, texCoord, inTex ) );
}
}
AssertFatal( dStrcmp( type, (const char*)texCoord->type ) == 0,
"ShaderFeatureGLSL::getOutTexCoord - Type mismatch!" );
return texCoord;
}
Var* ShaderFeatureGLSL::getInTexCoord( const char *name,
const char *type,
bool mapsToSampler,
Vector<ShaderComponent*> &componentList )
{
Var* texCoord = (Var*)LangElement::find( name );
if ( !texCoord )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector*>( componentList[C_CONNECTOR] );
texCoord = connectComp->getElement( RT_TEXCOORD );
texCoord->setName( name );
texCoord->setStructName( "IN" );
texCoord->setType( type );
texCoord->mapsToSampler = mapsToSampler;
}
AssertFatal( dStrcmp( type, (const char*)texCoord->type ) == 0,
"ShaderFeatureGLSL::getInTexCoord - Type mismatch!" );
return texCoord;
}
Var* ShaderFeatureGLSL::getInColor( const char *name,
const char *type,
Vector<ShaderComponent*> &componentList )
{
Var *inColor = (Var*)LangElement::find( name );
if ( !inColor )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector*>( componentList[C_CONNECTOR] );
inColor = connectComp->getElement( RT_COLOR );
inColor->setName( name );
inColor->setStructName( "IN" );
inColor->setType( type );
}
AssertFatal( dStrcmp( type, (const char*)inColor->type ) == 0,
"ShaderFeatureGLSL::getInColor - Type mismatch!" );
return inColor;
}
Var* ShaderFeatureGLSL::addOutVpos( MultiLine *meta,
Vector<ShaderComponent*> &componentList )
{
/*
// Nothing to do if we're on SM 3.0... we use the real vpos.
if ( GFX->getPixelShaderVersion() >= 3.0f )
return NULL;
*/
// For SM 2.x we need to generate the vpos in the vertex shader
// and pass it as a texture coord to the pixel shader.
Var *outVpos = (Var*)LangElement::find( "outVpos" );
if ( !outVpos )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
outVpos = connectComp->getElement( RT_TEXCOORD );
outVpos->setName( "outVpos" );
outVpos->setStructName( "OUT" );
outVpos->setType( "vec4" );
outVpos->mapsToSampler = false;
Var *outPosition = (Var*) LangElement::find( "gl_Position" );
AssertFatal( outPosition, "ShaderFeatureGLSL::addOutVpos - Didn't find the output position." );
meta->addStatement( new GenOp( " @ = @;\r\n", outVpos, outPosition ) );
}
return outVpos;
}
Var* ShaderFeatureGLSL::getInVpos( MultiLine *meta,
Vector<ShaderComponent*> &componentList )
{
Var *inVpos = (Var*)LangElement::find( "vpos" );
if ( inVpos )
return inVpos;
ShaderConnector *connectComp = dynamic_cast<ShaderConnector*>( componentList[C_CONNECTOR] );
/*
if ( GFX->getPixelShaderVersion() >= 3.0f )
{
inVpos = connectComp->getElement( RT_VPOS );
inVpos->setName( "vpos" );
inVpos->setStructName( "IN" );
inVpos->setType( "vec2" );
return inVpos;
}
*/
inVpos = connectComp->getElement( RT_TEXCOORD );
inVpos->setName( "inVpos" );
inVpos->setStructName( "IN" );
inVpos->setType( "vec4" );
Var *vpos = new Var( "vpos", "vec2" );
meta->addStatement( new GenOp( " @ = @.xy / @.w;\r\n", new DecOp( vpos ), inVpos, inVpos ) );
return vpos;
}
Var* ShaderFeatureGLSL::getInWorldToTangent( Vector<ShaderComponent*> &componentList )
{
Var *worldToTangent = (Var*)LangElement::find( "worldToTangent" );
if ( !worldToTangent )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
worldToTangent = connectComp->getElement( RT_TEXCOORD, 1, 3 );
worldToTangent->setName( "worldToTangent" );
worldToTangent->setStructName( "IN" );
worldToTangent->setType( "float3x3" );
}
return worldToTangent;
}
Var* ShaderFeatureGLSL::getInViewToTangent( Vector<ShaderComponent*> &componentList )
{
Var *viewToTangent = (Var*)LangElement::find( "viewToTangent" );
if ( !viewToTangent )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
viewToTangent = connectComp->getElement( RT_TEXCOORD, 1, 3 );
viewToTangent->setName( "viewToTangent" );
viewToTangent->setStructName( "IN" );
viewToTangent->setType( "float3x3" );
}
return viewToTangent;
}
Var* ShaderFeatureGLSL::getNormalMapTex()
{
Var *normalMap = (Var*)LangElement::find( "bumpMap" );
if ( !normalMap )
{
normalMap = new Var;
normalMap->setType( "sampler2D" );
normalMap->setName( "bumpMap" );
normalMap->uniform = true;
normalMap->sampler = true;
normalMap->constNum = Var::getTexUnitNum();
}
return normalMap;
}
Var* ShaderFeatureGLSL::getObjTrans( Vector<ShaderComponent*> &componentList,
bool useInstancing,
MultiLine *meta )
{
Var *objTrans = (Var*)LangElement::find( "objTrans" );
if ( objTrans )
return objTrans;
if ( useInstancing )
{
ShaderConnector *vertStruct = dynamic_cast<ShaderConnector *>( componentList[C_VERT_STRUCT] );
Var *instObjTrans = vertStruct->getElement( RT_TEXCOORD, 4, 4 );
instObjTrans->setStructName( "IN" );
instObjTrans->setName( "inst_objectTrans" );
mInstancingFormat->addElement( "objTrans", GFXDeclType_Float4, instObjTrans->constNum+0 );
mInstancingFormat->addElement( "objTrans", GFXDeclType_Float4, instObjTrans->constNum+1 );
mInstancingFormat->addElement( "objTrans", GFXDeclType_Float4, instObjTrans->constNum+2 );
mInstancingFormat->addElement( "objTrans", GFXDeclType_Float4, instObjTrans->constNum+3 );
objTrans = new Var;
objTrans->setType( "mat4x4" );
objTrans->setName( "objTrans" );
meta->addStatement( new GenOp( " @ = mat4x4( // Instancing!\r\n", new DecOp( objTrans ), instObjTrans ) );
meta->addStatement( new GenOp( " @[0],\r\n", instObjTrans ) );
meta->addStatement( new GenOp( " @[1],\r\n", instObjTrans ) );
meta->addStatement( new GenOp( " @[2],\r\n",instObjTrans ) );
meta->addStatement( new GenOp( " @[3] );\r\n", instObjTrans ) );
}
else
{
objTrans = new Var;
objTrans->setType( "float4x4" );
objTrans->setName( "objTrans" );
objTrans->uniform = true;
objTrans->constSortPos = cspPrimitive;
}
return objTrans;
}
Var* ShaderFeatureGLSL::getModelView( Vector<ShaderComponent*> &componentList,
bool useInstancing,
MultiLine *meta )
{
Var *modelview = (Var*)LangElement::find( "modelview" );
if ( modelview )
return modelview;
if ( useInstancing )
{
Var *objTrans = getObjTrans( componentList, useInstancing, meta );
Var *viewProj = (Var*)LangElement::find( "viewProj" );
if ( !viewProj )
{
viewProj = new Var;
viewProj->setType( "float4x4" );
viewProj->setName( "viewProj" );
viewProj->uniform = true;
viewProj->constSortPos = cspPass;
}
modelview = new Var;
modelview->setType( "float4x4" );
modelview->setName( "modelview" );
meta->addStatement( new GenOp( " @ = tMul( @, @ ); // Instancing!\r\n", new DecOp( modelview ), viewProj, objTrans ) );
}
else
{
modelview = new Var;
modelview->setType( "float4x4" );
modelview->setName( "modelview" );
modelview->uniform = true;
modelview->constSortPos = cspPrimitive;
}
return modelview;
}
Var* ShaderFeatureGLSL::getWorldView( Vector<ShaderComponent*> &componentList,
bool useInstancing,
MultiLine *meta )
{
Var *worldView = (Var*)LangElement::find( "worldViewOnly" );
if ( worldView )
return worldView;
if ( useInstancing )
{
Var *objTrans = getObjTrans( componentList, useInstancing, meta );
Var *worldToCamera = (Var*)LangElement::find( "worldToCamera" );
if ( !worldToCamera )
{
worldToCamera = new Var;
worldToCamera->setType( "float4x4" );
worldToCamera->setName( "worldToCamera" );
worldToCamera->uniform = true;
worldToCamera->constSortPos = cspPass;
}
worldView = new Var;
worldView->setType( "float4x4" );
worldView->setName( "worldViewOnly" );
meta->addStatement( new GenOp( " @ = tMul( @, @ ); // Instancing!\r\n", new DecOp( worldView ), worldToCamera, objTrans ) );
}
else
{
worldView = new Var;
worldView->setType( "float4x4" );
worldView->setName( "worldViewOnly" );
worldView->uniform = true;
worldView->constSortPos = cspPrimitive;
}
return worldView;
}
Var* ShaderFeatureGLSL::getInvWorldView( Vector<ShaderComponent*> &componentList,
bool useInstancing,
MultiLine *meta )
{
Var *viewToObj = (Var*)LangElement::find( "viewToObj" );
if ( viewToObj )
return viewToObj;
if ( useInstancing )
{
Var *worldView = getWorldView( componentList, useInstancing, meta );
viewToObj = new Var;
viewToObj->setType( "float3x3" );
viewToObj->setName( "viewToObj" );
// We just use transpose to convert the 3x3 portion
// of the world view transform into its inverse.
meta->addStatement( new GenOp( " @ = transpose( float3x3(@) ); // Instancing!\r\n", new DecOp( viewToObj ), worldView ) );
}
else
{
viewToObj = new Var;
viewToObj->setType( "float4x4" );
viewToObj->setName( "viewToObj" );
viewToObj->uniform = true;
viewToObj->constSortPos = cspPrimitive;
}
return viewToObj;
}
void ShaderFeatureGLSL::getWsPosition( Vector<ShaderComponent*> &componentList,
bool useInstancing,
MultiLine *meta,
LangElement *wsPosition )
{
Var *inPosition = (Var*)LangElement::find( "wsPosition" );
if ( inPosition )
{
meta->addStatement( new GenOp( " @ = @.xyz;\r\n",
wsPosition, inPosition ) );
return;
}
// Get the input position.
inPosition = (Var*)LangElement::find( "inPosition" );
if ( !inPosition )
inPosition = (Var*)LangElement::find( "position" );
AssertFatal( inPosition, "ShaderFeatureGLSL::getWsPosition - The vertex position was not found!" );
Var *objTrans = getObjTrans( componentList, useInstancing, meta );
meta->addStatement( new GenOp( " @ = tMul( @, vec4( @.xyz, 1 ) ).xyz;\r\n",
wsPosition, objTrans, inPosition ) );
}
Var* ShaderFeatureGLSL::addOutWsPosition( Vector<ShaderComponent*> &componentList,
bool useInstancing,
MultiLine *meta )
{
Var *outWsPosition = (Var*)LangElement::find( "outWsPosition" );
if ( !outWsPosition )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
outWsPosition = connectComp->getElement( RT_TEXCOORD );
outWsPosition->setName( "outWsPosition" );
outWsPosition->setStructName( "OUT" );
outWsPosition->setType( "vec3" );
outWsPosition->mapsToSampler = false;
getWsPosition( componentList, useInstancing, meta, outWsPosition );
}
return outWsPosition;
}
Var* ShaderFeatureGLSL::getInWsPosition( Vector<ShaderComponent*> &componentList )
{
Var *wsPosition = (Var*)LangElement::find( "wsPosition" );
if ( !wsPosition )
{
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
wsPosition = connectComp->getElement( RT_TEXCOORD );
wsPosition->setName( "wsPosition" );
wsPosition->setStructName( "IN" );
wsPosition->setType( "vec3" );
}
return wsPosition;
}
Var* ShaderFeatureGLSL::getWsView( Var *wsPosition, MultiLine *meta )
{
Var *wsView = (Var*)LangElement::find( "wsView" );
if ( !wsView )
{
wsView = new Var( "wsView", "vec3" );
Var *eyePos = (Var*)LangElement::find( "eyePosWorld" );
if ( !eyePos )
{
eyePos = new Var;
eyePos->setType( "vec3" );
eyePos->setName( "eyePosWorld" );
eyePos->uniform = true;
eyePos->constSortPos = cspPass;
}
meta->addStatement( new GenOp( " @ = normalize( @ - @ );\r\n",
new DecOp( wsView ), eyePos, wsPosition ) );
}
return wsView;
}
Var* ShaderFeatureGLSL::addOutDetailTexCoord( Vector<ShaderComponent*> &componentList,
MultiLine *meta,
bool useTexAnim )
{
// Check if its already added.
Var *outTex = (Var*)LangElement::find( "detCoord" );
if ( outTex )
return outTex;
// Grab incoming texture coords.
Var *inTex = getVertTexCoord( "texCoord" );
// create detail variable
Var *detScale = new Var;
detScale->setType( "vec2" );
detScale->setName( "detailScale" );
detScale->uniform = true;
detScale->constSortPos = cspPotentialPrimitive;
// grab connector texcoord register
ShaderConnector *connectComp = dynamic_cast<ShaderConnector *>( componentList[C_CONNECTOR] );
outTex = connectComp->getElement( RT_TEXCOORD );
outTex->setName( "detCoord" );
outTex->setStructName( "OUT" );
outTex->setType( "vec2" );
outTex->mapsToSampler = true;
if ( useTexAnim )
{
inTex->setType( "vec4" );
// Find or create the texture matrix.
Var *texMat = (Var*)LangElement::find( "texMat" );
if ( !texMat )
{
texMat = new Var;
texMat->setType( "float4x4" );
texMat->setName( "texMat" );
texMat->uniform = true;
texMat->constSortPos = cspPass;
}
meta->addStatement( new GenOp( " @ = tMul(@, @).xy * @;\r\n", outTex, texMat, inTex, detScale ) );
}
else
{
// setup output to mul texCoord by detail scale
meta->addStatement( new GenOp( " @ = @ * @;\r\n", outTex, inTex, detScale ) );
}
return outTex;
}
//****************************************************************************
// Base Texture
//****************************************************************************
DiffuseMapFeatGLSL::DiffuseMapFeatGLSL()
: mTorqueDep("shaders/common/gl/torque.glsl")
{
addDependency(&mTorqueDep);
}
void DiffuseMapFeatGLSL::processVert( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
MultiLine *meta = new MultiLine;
getOutTexCoord( "texCoord",
"vec2",
true,
fd.features[MFT_TexAnim],
meta,
componentList );
output = meta;
}
U32 DiffuseMapFeatGLSL::getOutputTargets(const MaterialFeatureData &fd) const
{
return fd.features[MFT_isDeferred] ? ShaderFeature::RenderTarget1 : ShaderFeature::DefaultTarget;
}
void DiffuseMapFeatGLSL::processPix( Vector<ShaderComponent*> &componentList,
const MaterialFeatureData &fd )
{
// grab connector texcoord register
Var *inTex = getInTexCoord( "texCoord", "vec2", true, componentList );
//determine output target
ShaderFeature::OutputTarget targ = ShaderFeature::DefaultTarget;
if (fd.features[MFT_isDeferred])
targ = ShaderFeature::RenderTarget1;
// create texture var
Var *diffuseMap = new Var;
diffuseMap->setType( "sampler2D" );
diffuseMap->setName( "diffuseMap" );
diffuseMap->uniform = true;
diffuseMap->sampler = true;
diffuseMap->constNum = Var::getTexUnitNum(); // used as texture unit num here
// create sample color var
Var *diffColor = new Var;
diffColor->setType("vec4");
diffColor->setName("diffuseColor");
LangElement *colorDecl = new DecOp( diffColor );
MultiLine * meta = new MultiLine;
output = meta;
if ( fd.features[MFT_CubeMap] )
{
meta->addStatement( new GenOp( " @ = tex2D(@, @);\r\n",
colorDecl,
diffuseMap,
inTex ) );
if (!fd.features[MFT_Imposter])
meta->addStatement( new GenOp(" @ = toLinear(@);\r\n", diffColor, diffColor) );
meta->addStatement( new GenOp( " @;\r\n", assignColor( diffColor, Material::Mul, NULL, targ) ) );
}
else if(fd.features[MFT_DiffuseMapAtlas])
{
// Handle atlased textures
// http://www.infinity-universe.com/Infinity/index.php?option=com_content&task=view&id=65&Itemid=47
Var *atlasedTex = new Var;
atlasedTex->setName("atlasedTexCoord");
atlasedTex->setType("vec2");
LangElement *atDecl = new DecOp(atlasedTex);
// Parameters of the texture atlas
Var *atParams = new Var;
atParams->setType("vec4");
atParams->setName("diffuseAtlasParams");
atParams->uniform = true;
atParams->constSortPos = cspPotentialPrimitive;
// Parameters of the texture (tile) this object is using in the atlas
Var *tileParams = new Var;
tileParams->setType("vec4");
tileParams->setName("diffuseAtlasTileParams");
tileParams->uniform = true;
tileParams->constSortPos = cspPotentialPrimitive;
const bool is_sm3 = (GFX->getPixelShaderVersion() > 2.0f);
if(is_sm3)
{
// Figure out the mip level
meta->addStatement(new GenOp(" float2 _dx = ddx(@ * @.z);\r\n", inTex, atParams));
meta->addStatement(new GenOp(" float2 _dy = ddy(@ * @.z);\r\n", inTex, atParams));
meta->addStatement(new GenOp(" float mipLod = 0.5 * log2(max(dot(_dx, _dx), dot(_dy, _dy)));\r\n"));
meta->addStatement(new GenOp(" mipLod = clamp(mipLod, 0.0, @.w);\r\n", atParams));
// And the size of the mip level
meta->addStatement(new GenOp(" float mipPixSz = pow(2.0, @.w - mipLod);\r\n", atParams));
meta->addStatement(new GenOp(" float2 mipSz = mipPixSz / @.xy;\r\n", atParams));
}
else
{
meta->addStatement(new GenOp(" float2 mipSz = float2(1.0, 1.0);\r\n"));
}
// Tiling mode
// TODO: Select wrap or clamp somehow
if( true ) // Wrap
meta->addStatement(new GenOp(" @ = frac(@);\r\n", atDecl, inTex));
else // Clamp
meta->addStatement(new GenOp(" @ = saturate(@);\r\n", atDecl, inTex));
// Finally scale/offset, and correct for filtering
meta->addStatement(new GenOp(" @ = @ * ((mipSz * @.xy - 1.0) / mipSz) + 0.5 / mipSz + @.xy * @.xy;\r\n",
atlasedTex, atlasedTex, atParams, atParams, tileParams));
// Add a newline
meta->addStatement(new GenOp( "\r\n"));
// For the rest of the feature...
inTex = atlasedTex;
// To dump out UV coords...
//#define DEBUG_ATLASED_UV_COORDS
#ifdef DEBUG_ATLASED_UV_COORDS
if(!fd.features[MFT_PrePassConditioner])
{
meta->addStatement(new GenOp(" @ = vec4(@.xy, mipLod / @.w, 1.0);\r\n", new DecOp(diffColor), inTex, atParams));
meta->addStatement(new GenOp(" @; return OUT;\r\n", assignColor(diffColor, Material::Mul, NULL, targ) ) );
return;
}
#endif
if(is_sm3)
{
meta->addStatement(new GenOp( " @ = tex2Dlod(@, float4(@, 0.0, mipLod));\r\n",
new DecOp(diffColor), diffuseMap, inTex));
if (!fd.features[MFT_Imposter])
meta->addStatement(new GenOp(" @ = toLinear(@);\r\n", diffColor, diffColor));
}
else
{
meta->addStatement(new GenOp( " @ = tex2D(@, @);\r\n",
new DecOp(diffColor), diffuseMap, inTex));
if (!fd.features[MFT_Imposter])
meta->addStatement(new GenOp(" @ = toLinear(@);\r\n", diffColor, diffColor));
}
meta->addStatement(new GenOp( " @;\r\n", assignColor(diffColor, Material::Mul, NULL, targ) ) );
}
else
{
meta->addStatement(new GenOp("@ = tex2D(@, @);\r\n", colorDecl, diffuseMap, inTex));
if (!fd.features[MFT_Imposter])
meta->addStatement(new GenOp(" @ = toLinear(@);\r\n", diffColor, diffColor));
meta->addStatement(new GenOp(" @;\r\n", assignColor(diffColor, Material::Mul, NULL, targ)));
}
}
ShaderFeature::Resources DiffuseMapFeatGLSL::getResources( const MaterialFeatureData &fd )
{
Resources res;
res.numTex = 1;
res.numTexReg = 1;
return res;
}
void DiffuseMapFeatGLSL::setTexData( Material::StageData &stageDat,
const MaterialFeatureData &fd,
RenderPassData &passData,