try to fade in web entities

libraries/entities-renderer/src/RenderableEntityItem.cpp

@@ -19,7 +19,7 @@ namespace render {
             if (payload->entity->getType() == EntityTypes::Light) {
                 return ItemKey::Builder::light();
             }
-            if (payload && (payload->entity->getType() == EntityTypes::PolyLine || payload->entity->isTransparent())) {
+            if (payload && payload->entity->isTransparent()) {
                 return ItemKey::Builder::transparentShape();
             }
         }

libraries/entities-renderer/src/RenderablePolyLineEntityItem.h

@@ -32,6 +32,8 @@ public:
     virtual void update(const quint64& now) override;
     virtual bool needsToCallUpdate() const override { return true; };
 
+    bool isTransparent() override { return true; }
+
     SIMPLE_RENDERABLE();
 
     NetworkTexturePointer _texture;

libraries/entities-renderer/src/RenderableWebEntityItem.cpp

@@ -181,6 +181,7 @@ void RenderableWebEntityItem::render(RenderArgs* args) {
         if (!buildWebSurface(static_cast<EntityTreeRenderer*>(args->_renderer))) {
             return;
         }
+        _fadeStartTime = usecTimestampNow();
         #endif
     }
 
@@ -208,10 +209,13 @@ void RenderableWebEntityItem::render(RenderArgs* args) {
         batch._glActiveBindTexture(GL_TEXTURE0, GL_TEXTURE_2D, _texture);
         textured = emissive = true;
     }
-    bool transparent = false;
+
+    float fadeRatio = Interpolate::calculateFadeRatio(_fadeStartTime);
+    bool transparent = fadeRatio < 1.0f;
+    batch._glColor4f(1.0f, 1.0f, 1.0f, fadeRatio);
 
     DependencyManager::get<GeometryCache>()->bindSimpleProgram(batch, textured, transparent, culled, emissive);
-    DependencyManager::get<GeometryCache>()->renderQuad(batch, topLeft, bottomRight, texMin, texMax, glm::vec4(1.0f, 1.0f, 1.0f, 0.0f));
+    DependencyManager::get<GeometryCache>()->renderQuad(batch, topLeft, bottomRight, texMin, texMax, glm::vec4(1.0f, 1.0f, 1.0f, 1.0f));
 }
 
 void RenderableWebEntityItem::setSourceUrl(const QString& value) {

libraries/entities-renderer/src/RenderableWebEntityItem.h

@@ -12,6 +12,7 @@
 #include <QSharedPointer>
 
 #include <WebEntityItem.h>
+#include <Interpolate.h>
 
 #include "RenderableEntityItem.h"
 
@@ -35,6 +36,8 @@ public:
     void update(const quint64& now) override;
     bool needsToCallUpdate() const override { return _webSurface != nullptr; }
 
+    bool isTransparent() override { return Interpolate::calculateFadeRatio(_fadeStartTime) < 1.0f; }
+
     SIMPLE_RENDERABLE();
 
 private:
@@ -53,6 +56,8 @@ private:
     QMetaObject::Connection _mouseReleaseConnection;
     QMetaObject::Connection _mouseMoveConnection;
     QMetaObject::Connection _hoverLeaveConnection;
+
+    quint64 _fadeStartTime;
 };
 
 

libraries/render-utils/src/simple.slf

@@ -49,7 +49,8 @@ void main(void) {
 
 #endif
 
-    if (_color.a < 1.0) {
+    const float ALPHA_THRESHOLD = 0.999;
+    if (_color.a < ALPHA_THRESHOLD) {
         if (emissiveAmount > 0.0) {
             // TODO: transparent emissive?
             packDeferredFragmentTranslucent(

libraries/render-utils/src/simple_textured.slf

@@ -30,7 +30,8 @@ void main(void) {
         texel = colorToLinearRGBA(texel);
     }
 
-    if (_color.a * texel.a < 1.0) {
+    const float ALPHA_THRESHOLD = 0.999;
+    if (_color.a * texel.a < ALPHA_THRESHOLD) {
         packDeferredFragmentTranslucent(
             normalize(_normal),
             _color.a * texel.a,

libraries/render-utils/src/simple_textured_unlit.slf

@@ -29,7 +29,8 @@ void main(void) {
         texel = colorToLinearRGBA(texel);
     }
 
-    if (_color.a * texel.a < 1.0) {
+    const float ALPHA_THRESHOLD = 0.999;
+    if (_color.a * texel.a < ALPHA_THRESHOLD) {
         packDeferredFragmentTranslucent(
             normalize(_normal),
             _color.a * texel.a,