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exploring how to to expose occluded/unoccluded outline styles

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This commit is contained in:
Sam Gateau 2017-11-05 11:48:12 -08:00
parent c1dfa24c12
commit fcb3cee092
1 changed files with 26 additions and 3 deletions
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29
libraries/render-utils/src/Outline.slh
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@ -39,6 +39,7 @@ void main(void) {
vec2 texCoord0 = varTexCoord0+halfTexel;
float outlinedDepth = texture(outlinedDepthMap, texCoord0).x;
float intensity = 0.0;
float isOccluded = 0.0;
if (outlinedDepth < FAR_Z) {
// We're not on the far plane so we are on the outlined object, thus no outline to do!
@ -52,6 +53,7 @@ void main(void) {
// Are we occluded?
if (sceneDepth < (outlinedDepth-LINEAR_DEPTH_BIAS)) {
intensity = params._fillOpacityOccluded;
isOccluded = 1.0;
} else {
intensity = params._fillOpacityUnoccluded;
}
@ -66,6 +68,8 @@ void main(void) {
int x;
int y;
float sumOutlineDepth = 0;
for (y=0 ; y<params._blurKernelSize ; y++) {
uv = lineStartUv;
lineStartUv.y += deltaUv.y;
@ -75,7 +79,10 @@ void main(void) {
if (uv.x>=0.0 && uv.x<=1.0)
{
outlinedDepth = texture(outlinedDepthMap, uv).x;
intensity += (outlinedDepth < FAR_Z) ? 1.0 : 0.0;
float touch = (outlinedDepth < FAR_Z) ? 1.0 : 0.0;
//sumOutlineDepth = min(outlinedDepth, sumOutlineDepth);
sumOutlineDepth += (outlinedDepth * touch);
intensity += touch;
weight += 1.f;
}
uv.x += deltaUv.x;
@ -83,15 +90,31 @@ void main(void) {
}
}
if (intensity > 0) {
sumOutlineDepth /= intensity;
} else {
sumOutlineDepth = FAR_Z;
}
intensity /= weight;
if (intensity < OPACITY_EPSILON) {
discard;
}
intensity = min(1.0, intensity / params._threshold) * params._intensity;
// But we need to check the scene depth aginst the depth of the outline
float sceneDepth = texture(sceneDepthMap, texCoord0).x;
// Transform to linear depth for better precision
outlinedDepth = -evalZeyeFromZdb(sumOutlineDepth);
sceneDepth = -evalZeyeFromZdb(sceneDepth);
// Are we occluded?
if (sceneDepth < (outlinedDepth/*-LINEAR_DEPTH_BIAS*/)) {
isOccluded = 1.0;
}
}
outFragColor = vec4(params._color.rgb, intensity);
outFragColor = vec4(mix(params._color.rgb, vec3(0.1,1,0.1), isOccluded), intensity);
}
<@endfunc@>