Justin Marshall
88 lines
3.1 KiB
Plaintext
88 lines
3.1 KiB
Plaintext
{
|
|
parms {
|
|
stageSort sortEmitOnly
|
|
exposure exposure * glarePreScale
|
|
}
|
|
state {
|
|
blend GL_SRC_ALPHA GL_ONE
|
|
depthmask
|
|
alphamask
|
|
twosided
|
|
}
|
|
hlsl_vp {
|
|
result.position.x = dot4( vertex.position, $mvpMatrixX );
|
|
result.position.y = dot4( vertex.position, $mvpMatrixY );
|
|
result.position.z = dot4( vertex.position, $mvpMatrixZ );
|
|
result.position.w = dot4( vertex.position, $mvpMatrixW );
|
|
|
|
const float eyeDist = result.position.w;
|
|
const float frameFrac = vertex.tangent.z;
|
|
const float alphascale = vertex.tangent.w;
|
|
|
|
const float fogTerm = -( clamp( eyeDist - $fogStart.x, 0.0, $fogEnd.x ) * $fogScale.x );
|
|
// moving the fogVal calculation to the vert shader for particles/foliage does not appear to cause any artifacts
|
|
const float fogVal = saturate( exp2( fogTerm ) );
|
|
|
|
// create thickness based on alpha scale
|
|
float thickness = ( ( 1.0 - alphascale ) * 127.0 ) / eyeDist;
|
|
|
|
// Convert back from 16 bit vertex elements.
|
|
result.texcoord0.xy = vertex.texcoord0.xy * $particleStScaleBias.x + $particleStScaleBias.y;
|
|
result.texcoord0.z = fogVal;
|
|
result.texcoord0.w = alphascale;
|
|
|
|
// Anim Cross-fade information
|
|
// Convert back from 16 bit vertex elements.
|
|
result.texcoord1.xy = vertex.texcoord1.xy * $particleStScaleBias.x + $particleStScaleBias.y;
|
|
result.texcoord1.z = frameFrac;
|
|
result.texcoord1.w = 0.0;
|
|
|
|
result.texcoord2.x = vertex.normal.x * 10.0 + 1.0;
|
|
result.texcoord2.y = vertex.normal.y * 10.0 + 1.0;
|
|
result.texcoord2.z = 1.0 - vertex.normal.z;
|
|
result.texcoord2.w = vertex.normal.w;
|
|
|
|
// adding half of the alpha scale to create a fake thickness to the particle
|
|
// makes particles that are flat against surfaces show up much better, result: need fewer particles.
|
|
result.position.z -= thickness;
|
|
|
|
#ifdef XBOX
|
|
result.texcoord3 = result.position;
|
|
#endif
|
|
|
|
// foliage fading based on distance to viewer is stored in vertex.color.w
|
|
|
|
// fade particles based on distance to near clip and thickness
|
|
float particleFade = saturate( abs( eyeDist ) / ( ( 1.0 - alphascale ) * 127.0 ) );
|
|
|
|
float f = vertex.tangent.x; // foliage or static model flag (ie, don't apply particle fading)
|
|
float fade = f + ( 1.0 - f ) * particleFade;
|
|
result.color = swizzleColor( vertex.color ) * fade;
|
|
}
|
|
hlsl_fp {
|
|
#ifdef XBOX
|
|
float interpolatedZOverW = fragment.texcoord3.z / fragment.texcoord3.w;
|
|
#else
|
|
float interpolatedZOverW = fragment.position.z;
|
|
#endif
|
|
float2 tc = screenPosToTexcoord( fragment.position.xy, $renderPositionToViewTexture );
|
|
float scale = ComputeSoftParticleScale( $viewDepthMap, tc, interpolatedZOverW, fragment.texcoord0.w );
|
|
half4 final = ComputeAnimCrossFadeColor( $transMap, fragment.texcoord0.xy, fragment.texcoord1.xy, fragment.texcoord1.z );
|
|
|
|
final.xyz = _float3( 1.0 ) - ( _float3( 1.0 ) - final.xyz ) * _float3( fragment.texcoord2.z );
|
|
final.xyz *= _float3( fragment.texcoord2.x );
|
|
final.w = saturate( final.w - ( 1.0 - scale ) );
|
|
//final.w *= scale;
|
|
final.w *= fragment.texcoord2.y;
|
|
final *= fragment.color;
|
|
final.xyz -= _float3( 1.0 );
|
|
|
|
// apply global fog
|
|
half fogVal = fragment.texcoord0.z;
|
|
final.xyz *= fogVal;
|
|
|
|
result.color = final;
|
|
|
|
//result.color = float4(1,0,1,1);
|
|
}
|
|
} |