From 86f7a8b273cdd72eda54164c2d8f5ce1e4ce1748 Mon Sep 17 00:00:00 2001
From: Alexander Rose <alexander.rose@weirdbyte.de>
Date: Wed, 14 Dec 2022 22:50:15 -0800
Subject: [PATCH] add impostor solidInterior param
---
CHANGELOG.md | 1 +
src/mol-gl/shader/cylinders.frag.ts | 113 +++++++++++++++++++++-------
src/mol-gl/shader/cylinders.vert.ts | 4 -
src/mol-gl/shader/spheres.frag.ts | 29 ++++---
4 files changed, 103 insertions(+), 44 deletions(-)
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ae05abb51..bca9400de 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ Note that since we don't clearly distinguish between a public and private interf
- Fix cylinder near-clipping
- Add interior cylinder caps
- Add per-pixel object clipping
+ - Add `solidInterior` parameter
- Fix `QualityAssessment` assignment bug for structures with different auth vs label sequence numbering
- Refresh `ApplyActionControl`'s param definition when toggling expanded state
diff --git a/src/mol-gl/shader/cylinders.frag.ts b/src/mol-gl/shader/cylinders.frag.ts
index c1169f27a..b820b7709 100644
--- a/src/mol-gl/shader/cylinders.frag.ts
+++ b/src/mol-gl/shader/cylinders.frag.ts
@@ -28,6 +28,12 @@ uniform mat4 uInvView;
#include light_frag_params
#include common_clip
+#ifdef dSolidInterior
+ const bool solidInterior = true;
+#else
+ const bool solidInterior = false;
+#endif
+
// adapted from https://www.shadertoy.com/view/4lcSRn
// The MIT License, Copyright 2016 Inigo Quilez
bool CylinderImpostor(
@@ -63,6 +69,9 @@ bool CylinderImpostor(
bool bottomInterior = false;
#endif
+ bool clipped = false;
+ bool objectClipped = false;
+
// body outside
h = sqrt(h);
float t = (-k1 - h) / k2;
@@ -74,36 +83,76 @@ bool CylinderImpostor(
viewPosition = (uView * vec4(modelPosition, 1.0)).xyz;
fragmentDepth = calcDepth(viewPosition);
#if defined(dClipVariant_pixel) && dClipObjectCount != 0
- if (clipTest(vec4(modelPosition, 0.0))) fragmentDepth = -1.0;
+ if (clipTest(vec4(modelPosition, 0.0))) {
+ objectClipped = true;
+ fragmentDepth = -1.0;
+ #ifdef dSolidInterior
+ topCap = !topInterior;
+ bottomCap = !bottomInterior;
+ #endif
+ }
#endif
if (fragmentDepth > 0.0) return true;
+ clipped = true;
}
- if (topCap && y < 0.0) {
- // top cap
- t = -baoc / bard;
- if (abs(k1 + k2 * t) < h) {
- interior = topInterior;
- cameraNormal = -ba / baba;
- modelPosition = rayOrigin + t * rayDir;
- viewPosition = (uView * vec4(modelPosition, 1.0)).xyz;
- fragmentDepth = calcDepth(viewPosition);
- if (fragmentDepth > 0.0) return true;
- }
- } else if (bottomCap && y >= 0.0) {
- // bottom cap
- t = (baba - baoc) / bard;
- if (abs(k1 + k2 * t) < h) {
- interior = bottomInterior;
- cameraNormal = ba / baba;
- modelPosition = rayOrigin + t * rayDir;
- viewPosition = (uView * vec4(modelPosition, 1.0)).xyz;
- fragmentDepth = calcDepth(viewPosition);
- if (fragmentDepth > 0.0) return true;
+ if (!clipped) {
+ if (topCap && y < 0.0) {
+ // top cap
+ t = -baoc / bard;
+ if (abs(k1 + k2 * t) < h) {
+ interior = topInterior;
+ cameraNormal = -ba / baba;
+ modelPosition = rayOrigin + t * rayDir;
+ viewPosition = (uView * vec4(modelPosition, 1.0)).xyz;
+ fragmentDepth = calcDepth(viewPosition);
+ #if defined(dClipVariant_pixel) && dClipObjectCount != 0
+ if (clipTest(vec4(modelPosition, 0.0))) {
+ objectClipped = true;
+ fragmentDepth = -1.0;
+ #ifdef dSolidInterior
+ topCap = !topInterior;
+ bottomCap = !bottomInterior;
+ #endif
+ }
+ #endif
+ if (fragmentDepth > 0.0) {
+ #ifdef dSolidInterior
+ if (interior) cameraNormal = -rayDir;
+ #endif
+ return true;
+ }
+ }
+ } else if (bottomCap && y >= 0.0) {
+ // bottom cap
+ t = (baba - baoc) / bard;
+ if (abs(k1 + k2 * t) < h) {
+ interior = bottomInterior;
+ cameraNormal = ba / baba;
+ modelPosition = rayOrigin + t * rayDir;
+ viewPosition = (uView * vec4(modelPosition, 1.0)).xyz;
+ fragmentDepth = calcDepth(viewPosition);
+ #if defined(dClipVariant_pixel) && dClipObjectCount != 0
+ if (clipTest(vec4(modelPosition, 0.0))) {
+ objectClipped = true;
+ fragmentDepth = -1.0;
+ #ifdef dSolidInterior
+ topCap = !topInterior;
+ bottomCap = !bottomInterior;
+ #endif
+ }
+ #endif
+ if (fragmentDepth > 0.0) {
+ #ifdef dSolidInterior
+ if (interior) cameraNormal = -rayDir;
+ #endif
+ return true;
+ }
+ }
}
}
- if (uDoubleSided) {
+ if (uDoubleSided || solidInterior) {
// body inside
h = -h;
t = (-k1 - h) / k2;
@@ -116,8 +165,10 @@ bool CylinderImpostor(
fragmentDepth = calcDepth(viewPosition);
if (fragmentDepth > 0.0) {
#ifdef dSolidInterior
- fragmentDepth = 0.0 + (0.0000001 / vSize);
- cameraNormal = -rayDir;
+ if (!objectClipped) {
+ fragmentDepth = 0.0 + (0.0000002 / vSize);
+ cameraNormal = -rayDir;
+ }
#endif
return true;
}
@@ -134,8 +185,10 @@ bool CylinderImpostor(
fragmentDepth = calcDepth(viewPosition);
if (fragmentDepth > 0.0) {
#ifdef dSolidInterior
- fragmentDepth = 0.0 + (0.0000001 / vSize);
- cameraNormal = -rayDir;
+ if (!objectClipped) {
+ fragmentDepth = 0.0 + (0.0000002 / vSize);
+ cameraNormal = -rayDir;
+ }
#endif
return true;
}
@@ -151,8 +204,10 @@ bool CylinderImpostor(
fragmentDepth = calcDepth(viewPosition);
if (fragmentDepth > 0.0) {
#ifdef dSolidInterior
- fragmentDepth = 0.0 + (0.0000001 / vSize);
- cameraNormal = -rayDir;
+ if (!objectClipped) {
+ fragmentDepth = 0.0 + (0.0000002 / vSize);
+ cameraNormal = -rayDir;
+ }
#endif
return true;
}
diff --git a/src/mol-gl/shader/cylinders.vert.ts b/src/mol-gl/shader/cylinders.vert.ts
index f9d1a0694..60b3f1932 100644
--- a/src/mol-gl/shader/cylinders.vert.ts
+++ b/src/mol-gl/shader/cylinders.vert.ts
@@ -57,10 +57,6 @@ void main() {
// ensure cylinder 'dir' is pointing towards the camera
if(dot(camDir, dir) < 0.0) {
dir = -dir;
- // TODO: revisit
- // vec3 tmp = vStart;
- // vStart = vEnd;
- // vEnd = tmp;
}
vec3 left = cross(camDir, dir);
diff --git a/src/mol-gl/shader/spheres.frag.ts b/src/mol-gl/shader/spheres.frag.ts
index 9af2d9d39..9eaf356c7 100644
--- a/src/mol-gl/shader/spheres.frag.ts
+++ b/src/mol-gl/shader/spheres.frag.ts
@@ -23,7 +23,13 @@ varying float vRadiusSq;
varying vec3 vPoint;
varying vec3 vPointViewPosition;
-bool SphereImpostor(out vec3 modelPos, out vec3 cameraPos, out vec3 cameraNormal, out bool interior, out float fragmentDepth, out bool clipped){
+#ifdef dSolidInterior
+ const bool solidInterior = true;
+#else
+ const bool solidInterior = false;
+#endif
+
+bool SphereImpostor(out vec3 modelPos, out vec3 cameraPos, out vec3 cameraNormal, out bool interior, out float fragmentDepth){
vec3 cameraSpherePos = -vPointViewPosition;
vec3 rayOrigin = mix(vec3(0.0, 0.0, 0.0), vPoint, uIsOrtho);
@@ -43,9 +49,11 @@ bool SphereImpostor(out vec3 modelPos, out vec3 cameraPos, out vec3 cameraNormal
modelPos = (uInvView * vec4(cameraPos, 1.0)).xyz;
fragmentDepth = calcDepth(cameraPos);
+ bool objectClipped = false;
+
#if defined(dClipVariant_pixel) && dClipObjectCount != 0
if (clipTest(vec4(modelPos, 0.0))) {
- clipped = true;
+ objectClipped = true;
fragmentDepth = -1.0;
}
#endif
@@ -54,12 +62,18 @@ bool SphereImpostor(out vec3 modelPos, out vec3 cameraPos, out vec3 cameraNormal
cameraNormal = normalize(cameraPos - cameraSpherePos);
interior = false;
return true;
- } else if (uDoubleSided) {
+ } else if (uDoubleSided || solidInterior) {
cameraPos = rayDirection * posT + rayOrigin;
modelPos = (uInvView * vec4(cameraPos, 1.0)).xyz;
fragmentDepth = calcDepth(cameraPos);
cameraNormal = -normalize(cameraPos - cameraSpherePos);
interior = true;
+ #ifdef dSolidInterior
+ if (!objectClipped) {
+ fragmentDepth = 0.0 + (0.0000001 / vRadius);
+ cameraNormal = -mix(normalize(vPoint), vec3(0.0, 0.0, 1.0), uIsOrtho);
+ }
+ #endif
return true;
}
@@ -72,7 +86,7 @@ void main(void){
vec3 cameraNormal;
float fragmentDepth;
bool clipped = false;
- bool hit = SphereImpostor(modelPos, cameraPos, cameraNormal, interior, fragmentDepth, clipped);
+ bool hit = SphereImpostor(modelPos, cameraPos, cameraNormal, interior, fragmentDepth);
if (!hit) discard;
if (fragmentDepth < 0.0) discard;
@@ -81,13 +95,6 @@ void main(void){
vec3 vViewPosition = cameraPos;
vec3 vModelPosition = modelPos;
- #ifdef dSolidInterior
- if (interior && !clipped) {
- fragmentDepth = 0.0 + (0.0000001 / vRadius);
- cameraNormal = -mix(normalize(vPoint), vec3(0.0, 0.0, 1.0), uIsOrtho);
- }
- #endif
-
gl_FragDepthEXT = fragmentDepth;
#include clip_pixel
--
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