Re-organising shaders

This commit is contained in:
Emmanuel BENOîT 2017-10-04 18:40:15 +02:00
parent d64e9f9a2e
commit b75cee8638
7 changed files with 82 additions and 65 deletions

43
shaders/lib/dof.glsl Normal file
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//!type library
//!include lib/utils.glsl
float DOF_CoC(
in float z )
{
return uMaxBlur * min( 1 ,
max( 0 , abs( z - uSharpDist ) - uSharpRange ) / uBlurFalloff );
}
// z: z at UV
// coc: blur radius at UV
// uv: initial coordinate
// blurvec: smudge direction
vec3 DOF_Blur(
in float z ,
in float coc ,
in vec2 uv ,
in vec2 blurvec )
{
vec3 sumcol = vec3( 0. );
for ( int i = 0 ; i < u_Samples ; i++ ) {
float r = i;
#ifdef DOF_USE_RANDOM
r += M_Hash( uv + float( i + uTime ) ) - .5;
#endif
r = r / float( u_Samples - 1 ) - .5;
vec2 p = uv + r * coc * blurvec;
vec3 smpl = texture( u_Input , p ).xyz;
float sz = texture( u_Depth , p ).x;
if ( sz < z ) {
// if sample is closer consider it's CoC
p = uv + r * min( coc , DOF_CoC( sz ) ) * blurvec;
p = uv + r * DOF_CoC( sz ) * blurvec;
smpl = texture( u_Input , p ).xyz;
}
sumcol += smpl;
}
sumcol /= float( u_Samples );
sumcol = max( sumcol , 0. );
return sumcol;
}

11
shaders/lib/utils.glsl Normal file
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//! type library
// -----------------------------------------------------------------------------
float M_Hash( in vec2 p )
{
p = fract(p * vec2(5.3987, 5.4421));
p += dot(p.yx, p.xy + vec2(21.5351, 14.3137));
return fract(p.x * p.y * 95.4307);
}