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Update GLSL Shadergen. Not used on DX9.

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This commit is contained in:
LuisAntonRebollo 2014-04-17 17:44:49 +02:00
parent ba36617aec
commit 9221b4dd10
20 changed files with 1944 additions and 1128 deletions
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22
Engine/source/shaderGen/GLSL/paraboloidGLSL.cpp
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@ -65,7 +65,7 @@ void ParaboloidVertTransformGLSL::processVert( Vector<ShaderComponent*> &compon
// http://www.gamedev.net/reference/articles/article2308.asp
// Swizzle z and y post-transform
meta->addStatement( new GenOp( " @ = vec4(@ * vec4(@.xyz,1)).xzyw;\r\n", outPosition, worldViewOnly, inPosition ) );
meta->addStatement( new GenOp( " @ = tMul(@, float4(@.xyz,1)).xzyw;\r\n", outPosition, worldViewOnly, inPosition ) );
meta->addStatement( new GenOp( " float L = length(@.xyz);\r\n", outPosition ) );
if ( isSinglePass )
@ -73,7 +73,8 @@ void ParaboloidVertTransformGLSL::processVert( Vector<ShaderComponent*> &compon
// Flip the z in the back case
Var *outIsBack = connectComp->getElement( RT_TEXCOORD );
outIsBack->setType( "float" );
outIsBack->setName( "outIsBack" );
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 ) );
@ -94,15 +95,16 @@ void ParaboloidVertTransformGLSL::processVert( Vector<ShaderComponent*> &compon
// TODO: If we change other shadow shaders to write out
// linear depth, than fix this as well!
//
// (L - 1.0)/(lightParams.x - 1.0);
// (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( "vec2" );
outPosXY->setName( "outPosXY" );
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.
@ -136,16 +138,18 @@ void ParaboloidVertTransformGLSL::processPix( Vector<ShaderComponent*> &compon
{
// Cull things on the back side of the map.
Var *isBack = connectComp->getElement( RT_TEXCOORD );
isBack->setName( "outIsBack" );
isBack->setName( "isBack" );
isBack->setStructName( "IN" );
isBack->setType( "float" );
meta->addStatement( new GenOp( " if ( ( abs( @ ) - 0.999 ) < 0 ) discard;\r\n", isBack ) );
}
// Cull pixels outside of the valid paraboloid.
Var *posXY = connectComp->getElement( RT_TEXCOORD );
posXY->setName( "outPosXY" );
posXY->setType( "vec2" );
meta->addStatement( new GenOp( " if ( ( 1.0 - length( @ ) ) < 0 ) discard;\r\n", posXY ) );
posXY->setName( "posXY" );
posXY->setStructName( "IN" );
posXY->setType( "float2" );
meta->addStatement( new GenOp( " clip( 1.0 - abs(@.x) );\r\n", posXY ) );
output = meta;
}