Merge pull request #2468 from ey6es/master

Cull against shadow volume when rendering avatar shadows, don't use textures/fancy shaders when rendering shadow map.

interface/interface_en.ts

@@ -4,22 +4,22 @@
 <context>
     <name>Application</name>
     <message>
-        <location filename="src/Application.cpp" line="1364"/>
+        <location filename="src/Application.cpp" line="1368"/>
         <source>Export Voxels</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="src/Application.cpp" line="1365"/>
+        <location filename="src/Application.cpp" line="1369"/>
         <source>Sparse Voxel Octree Files (*.svo)</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="src/Application.cpp" line="3577"/>
+        <location filename="src/Application.cpp" line="3596"/>
         <source>Open Script</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="src/Application.cpp" line="3578"/>
+        <location filename="src/Application.cpp" line="3597"/>
         <source>JavaScript Files (*.js)</source>
         <translation type="unfinished"></translation>
     </message>
@@ -113,18 +113,18 @@
 <context>
     <name>Menu</name>
     <message>
-        <location filename="src/Menu.cpp" line="439"/>
+        <location filename="src/Menu.cpp" line="449"/>
         <source>Open .ini config file</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="src/Menu.cpp" line="441"/>
+        <location filename="src/Menu.cpp" line="451"/>
-        <location filename="src/Menu.cpp" line="453"/>
+        <location filename="src/Menu.cpp" line="463"/>
         <source>Text files (*.ini)</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="src/Menu.cpp" line="451"/>
+        <location filename="src/Menu.cpp" line="461"/>
         <source>Save .ini config file</source>
         <translation type="unfinished"></translation>
     </message>
@@ -132,28 +132,28 @@
 <context>
     <name>QObject</name>
     <message>
-        <location filename="src/ImportDialog.cpp" line="22"/>
+        <location filename="src/ui/ImportDialog.cpp" line="22"/>
-        <location filename="src/ImportDialog.cpp" line="23"/>
+        <location filename="src/ui/ImportDialog.cpp" line="23"/>
         <source>Import Voxels</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="src/ImportDialog.cpp" line="24"/>
+        <location filename="src/ui/ImportDialog.cpp" line="24"/>
         <source>Loading ...</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="src/ImportDialog.cpp" line="25"/>
+        <location filename="src/ui/ImportDialog.cpp" line="25"/>
         <source>Place voxels</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="src/ImportDialog.cpp" line="26"/>
+        <location filename="src/ui/ImportDialog.cpp" line="26"/>
         <source>&lt;b&gt;Import&lt;/b&gt; %1 as voxels</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="src/ImportDialog.cpp" line="27"/>
+        <location filename="src/ui/ImportDialog.cpp" line="27"/>
         <source>Cancel</source>
         <translation type="unfinished"></translation>
     </message>

interface/resources/shaders/model_shadow.frag

@@ -0,0 +1,14 @@
+#version 120
+
+//
+//  model_shadow.frag
+//  fragment shader
+//
+//  Created by Andrzej Kapolka on 3/24/14.
+//  Copyright (c) 2014 High Fidelity, Inc. All rights reserved.
+//
+
+void main(void) {
+    // fixed color for now (we may eventually want to use texture alpha)
+    gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);
+}

interface/resources/shaders/model_shadow.vert

@@ -0,0 +1,14 @@
+#version 120
+
+//
+//  model_shadow.vert
+//  vertex shader
+//
+//  Created by Andrzej Kapolka on 3/24/14.
+//  Copyright (c) 2014 High Fidelity, Inc. All rights reserved.
+//
+
+void main(void) {
+    // just use standard pipeline transform
+    gl_Position = ftransform();
+}

interface/resources/shaders/skin_model_shadow.vert

@@ -0,0 +1,27 @@
+#version 120
+
+//
+//  skin_model_shadow.vert
+//  vertex shader
+//
+//  Created by Andrzej Kapolka on 3/24/14.
+//  Copyright (c) 2014 High Fidelity, Inc. All rights reserved.
+//
+
+const int MAX_CLUSTERS = 128;
+const int INDICES_PER_VERTEX = 4;
+
+uniform mat4 clusterMatrices[MAX_CLUSTERS];
+
+attribute vec4 clusterIndices;
+attribute vec4 clusterWeights;
+
+void main(void) {
+    vec4 position = vec4(0.0, 0.0, 0.0, 0.0);
+    for (int i = 0; i < INDICES_PER_VERTEX; i++) {
+        mat4 clusterMatrix = clusterMatrices[int(clusterIndices[i])];
+        float clusterWeight = clusterWeights[i];
+        position += clusterMatrix * gl_Vertex * clusterWeight;
+    }
+    gl_Position = gl_ModelViewProjectionMatrix * position;
+}

interface/src/Application.cpp

@@ -2167,21 +2167,22 @@ void Application::updateShadowMap() {
     glViewport(0, 0, fbo->width(), fbo->height());
 
     glm::vec3 lightDirection = -getSunDirection();
-    glm::quat rotation = glm::inverse(rotationBetween(IDENTITY_FRONT, lightDirection));
+    glm::quat rotation = rotationBetween(IDENTITY_FRONT, lightDirection);
-    glm::vec3 translation = glm::vec3();
+    glm::quat inverseRotation = glm::inverse(rotation);
     float nearScale = 0.0f;
     const float MAX_SHADOW_DISTANCE = 2.0f;
-    float farScale = (MAX_SHADOW_DISTANCE - _viewFrustum.getNearClip()) / (_viewFrustum.getFarClip() - _viewFrustum.getNearClip());
+    float farScale = (MAX_SHADOW_DISTANCE - _viewFrustum.getNearClip()) /
+        (_viewFrustum.getFarClip() - _viewFrustum.getNearClip());
     loadViewFrustum(_myCamera, _viewFrustum);
     glm::vec3 points[] = {
-        rotation * (glm::mix(_viewFrustum.getNearTopLeft(), _viewFrustum.getFarTopLeft(), nearScale) + translation),
+        inverseRotation * (glm::mix(_viewFrustum.getNearTopLeft(), _viewFrustum.getFarTopLeft(), nearScale)),
-        rotation * (glm::mix(_viewFrustum.getNearTopRight(), _viewFrustum.getFarTopRight(), nearScale) + translation),
+        inverseRotation * (glm::mix(_viewFrustum.getNearTopRight(), _viewFrustum.getFarTopRight(), nearScale)),
-        rotation * (glm::mix(_viewFrustum.getNearBottomLeft(), _viewFrustum.getFarBottomLeft(), nearScale) + translation),
+        inverseRotation * (glm::mix(_viewFrustum.getNearBottomLeft(), _viewFrustum.getFarBottomLeft(), nearScale)),
-        rotation * (glm::mix(_viewFrustum.getNearBottomRight(), _viewFrustum.getFarBottomRight(), nearScale) + translation),
+        inverseRotation * (glm::mix(_viewFrustum.getNearBottomRight(), _viewFrustum.getFarBottomRight(), nearScale)),
-        rotation * (glm::mix(_viewFrustum.getNearTopLeft(), _viewFrustum.getFarTopLeft(), farScale) + translation),
+        inverseRotation * (glm::mix(_viewFrustum.getNearTopLeft(), _viewFrustum.getFarTopLeft(), farScale)),
-        rotation * (glm::mix(_viewFrustum.getNearTopRight(), _viewFrustum.getFarTopRight(), farScale) + translation),
+        inverseRotation * (glm::mix(_viewFrustum.getNearTopRight(), _viewFrustum.getFarTopRight(), farScale)),
-        rotation * (glm::mix(_viewFrustum.getNearBottomLeft(), _viewFrustum.getFarBottomLeft(), farScale) + translation),
+        inverseRotation * (glm::mix(_viewFrustum.getNearBottomLeft(), _viewFrustum.getFarBottomLeft(), farScale)),
-        rotation * (glm::mix(_viewFrustum.getNearBottomRight(), _viewFrustum.getFarBottomRight(), farScale) + translation) };
+        inverseRotation * (glm::mix(_viewFrustum.getNearBottomRight(), _viewFrustum.getFarBottomRight(), farScale)) };
     glm::vec3 minima(FLT_MAX, FLT_MAX, FLT_MAX), maxima(-FLT_MAX, -FLT_MAX, -FLT_MAX);
     for (size_t i = 0; i < sizeof(points) / sizeof(points[0]); i++) {
         minima = glm::min(minima, points[i]);
@@ -2194,8 +2195,19 @@ void Application::updateShadowMap() {
 
     // save the combined matrix for rendering
     _shadowMatrix = glm::transpose(glm::translate(glm::vec3(0.5f, 0.5f, 0.5f)) * glm::scale(glm::vec3(0.5f, 0.5f, 0.5f)) *
-        glm::ortho(minima.x, maxima.x, minima.y, maxima.y, -maxima.z, -minima.z) *
+        glm::ortho(minima.x, maxima.x, minima.y, maxima.y, -maxima.z, -minima.z) * glm::mat4_cast(inverseRotation));
-        glm::mat4_cast(rotation) * glm::translate(translation));
+
+    // update the shadow view frustum
+    _shadowViewFrustum.setPosition(rotation * ((minima + maxima) * 0.5f));
+    _shadowViewFrustum.setOrientation(rotation);
+    _shadowViewFrustum.setOrthographic(true);
+    _shadowViewFrustum.setWidth(maxima.x - minima.x);
+    _shadowViewFrustum.setHeight(maxima.y - minima.y);
+    _shadowViewFrustum.setNearClip(minima.z);
+    _shadowViewFrustum.setFarClip(maxima.z);
+    _shadowViewFrustum.setEyeOffsetPosition(glm::vec3());
+    _shadowViewFrustum.setEyeOffsetOrientation(glm::quat());
+    _shadowViewFrustum.calculate();
     
     glMatrixMode(GL_PROJECTION);
     glPushMatrix();
@@ -2205,16 +2217,14 @@ void Application::updateShadowMap() {
     glMatrixMode(GL_MODELVIEW);
     glPushMatrix();
     glLoadIdentity();
-    glm::vec3 axis = glm::axis(rotation);
+    glm::vec3 axis = glm::axis(inverseRotation);
-    glRotatef(glm::degrees(glm::angle(rotation)), axis.x, axis.y, axis.z);
+    glRotatef(glm::degrees(glm::angle(inverseRotation)), axis.x, axis.y, axis.z);
 
     // store view matrix without translation, which we'll use for precision-sensitive objects
     glGetFloatv(GL_MODELVIEW_MATRIX, (GLfloat*)&_untranslatedViewMatrix);
-    _viewMatrixTranslation = translation;
+    _viewMatrixTranslation = glm::vec3();
 
-    glTranslatef(translation.x, translation.y, translation.z);
+    _avatarManager.renderAvatars(Avatar::SHADOW_RENDER_MODE);
-
-    _avatarManager.renderAvatars(true);
     _particles.render();
 
     glPopMatrix();
@@ -2392,7 +2402,7 @@ void Application::displaySide(Camera& whichCamera, bool selfAvatarOnly) {
     }
 
     bool mirrorMode = (whichCamera.getInterpolatedMode() == CAMERA_MODE_MIRROR);
-    _avatarManager.renderAvatars(mirrorMode, selfAvatarOnly);
+    _avatarManager.renderAvatars(mirrorMode ? Avatar::MIRROR_RENDER_MODE : Avatar::NORMAL_RENDER_MODE, selfAvatarOnly);
 
     if (!selfAvatarOnly) {
         //  Render the world box

interface/src/Application.h

@@ -155,6 +155,7 @@ public:
     Audio* getAudio() { return &_audio; }
     Camera* getCamera() { return &_myCamera; }
     ViewFrustum* getViewFrustum() { return &_viewFrustum; }
+    ViewFrustum* getShadowViewFrustum() { return &_shadowViewFrustum; }
     VoxelSystem* getVoxels() { return &_voxels; }
     VoxelTree* getVoxelTree() { return _voxels.getTree(); }
     ParticleTreeRenderer* getParticles() { return &_particles; }
@@ -390,6 +391,7 @@ private:
 
     ViewFrustum _viewFrustum; // current state of view frustum, perspective, orientation, etc.
     ViewFrustum _lastQueriedViewFrustum; /// last view frustum used to query octree servers (voxels, particles)
+    ViewFrustum _shadowViewFrustum;
     quint64 _lastQueriedTime;
 
     Oscilloscope _audioScope;

interface/src/avatar/Avatar.cpp

@@ -189,10 +189,12 @@ static TextRenderer* textRenderer(TextRendererType type) {
     return displayNameRenderer;
 }
 
-void Avatar::render(const glm::vec3& cameraPosition, bool forShadowMap) {
+void Avatar::render(const glm::vec3& cameraPosition, RenderMode renderMode) {
     // simple frustum check
     float boundingRadius = getBillboardSize();
-    if (Application::getInstance()->getViewFrustum()->sphereInFrustum(cameraPosition, boundingRadius) == ViewFrustum::OUTSIDE) {
+    ViewFrustum* frustum = (renderMode == Avatar::SHADOW_RENDER_MODE) ?
+        Application::getInstance()->getShadowViewFrustum() : Application::getInstance()->getViewFrustum();
+    if (frustum->sphereInFrustum(_position, boundingRadius) == ViewFrustum::OUTSIDE) {
         return;
     }
 
@@ -202,11 +204,11 @@ void Avatar::render(const glm::vec3& cameraPosition, bool forShadowMap) {
     {
         // glow when moving far away
         const float GLOW_DISTANCE = 20.0f;
-        Glower glower(_moving && distanceToTarget > GLOW_DISTANCE && !forShadowMap ? 1.0f : 0.0f);
+        Glower glower(_moving && distanceToTarget > GLOW_DISTANCE && renderMode == NORMAL_RENDER_MODE ? 1.0f : 0.0f);
 
         // render body
         if (Menu::getInstance()->isOptionChecked(MenuOption::Avatars)) {
-            renderBody(forShadowMap);
+            renderBody(renderMode);
         }
         if (Menu::getInstance()->isOptionChecked(MenuOption::RenderSkeletonCollisionProxies)) {
             _skeletonModel.renderCollisionProxies(0.7f);
@@ -230,7 +232,8 @@ void Avatar::render(const glm::vec3& cameraPosition, bool forShadowMap) {
             float angle = abs(angleBetween(toTarget + delta, toTarget - delta));
             float sphereRadius = getHead()->getAverageLoudness() * SPHERE_LOUDNESS_SCALING;
             
-            if (!forShadowMap && (sphereRadius > MIN_SPHERE_SIZE) && (angle < MAX_SPHERE_ANGLE) && (angle > MIN_SPHERE_ANGLE)) {
+            if (renderMode == NORMAL_RENDER_MODE && (sphereRadius > MIN_SPHERE_SIZE) &&
+                    (angle < MAX_SPHERE_ANGLE) && (angle > MIN_SPHERE_ANGLE)) {
                 glColor4f(SPHERE_COLOR[0], SPHERE_COLOR[1], SPHERE_COLOR[2], 1.f - angle / MAX_SPHERE_ANGLE);
                 glPushMatrix();
                 glTranslatef(_position.x, _position.y, _position.z);
@@ -242,8 +245,8 @@ void Avatar::render(const glm::vec3& cameraPosition, bool forShadowMap) {
     }
 
     const float DISPLAYNAME_DISTANCE = 10.0f;
-    setShowDisplayName(!forShadowMap && distanceToTarget < DISPLAYNAME_DISTANCE);
+    setShowDisplayName(renderMode == NORMAL_RENDER_MODE && distanceToTarget < DISPLAYNAME_DISTANCE);
-    if (forShadowMap) {
+    if (renderMode != NORMAL_RENDER_MODE) {
         return;
     }
     renderDisplayName();
@@ -306,17 +309,16 @@ glm::quat Avatar::computeRotationFromBodyToWorldUp(float proportion) const {
     return glm::angleAxis(angle * proportion, axis);
 }
 
-void Avatar::renderBody(bool forShadowMap) {    
+void Avatar::renderBody(RenderMode renderMode) {    
     if (_shouldRenderBillboard || !(_skeletonModel.isRenderable() && getHead()->getFaceModel().isRenderable())) {
         // render the billboard until both models are loaded
-        if (forShadowMap) {
+        if (renderMode != SHADOW_RENDER_MODE) {
-            return;
-        }
             renderBillboard();
+        }
         return;
     }
-    _skeletonModel.render(1.0f);
+    _skeletonModel.render(1.0f, renderMode == SHADOW_RENDER_MODE);
-    getHead()->render(1.0f);
+    getHead()->render(1.0f, renderMode == SHADOW_RENDER_MODE);
     getHand()->render(false);
 }
 

interface/src/avatar/Avatar.h

@@ -74,7 +74,10 @@ public:
 
     void init();
     void simulate(float deltaTime);
-    virtual void render(const glm::vec3& cameraPosition, bool forShadowMap);
+    
+    enum RenderMode { NORMAL_RENDER_MODE, SHADOW_RENDER_MODE, MIRROR_RENDER_MODE };
+    
+    virtual void render(const glm::vec3& cameraPosition, RenderMode renderMode = NORMAL_RENDER_MODE);
 
     //setters
     void setDisplayingLookatVectors(bool displayingLookatVectors) { getHead()->setRenderLookatVectors(displayingLookatVectors); }
@@ -181,7 +184,7 @@ protected:
     float getPelvisToHeadLength() const;
 
     void renderDisplayName();
-    virtual void renderBody(bool forShadowMap);
+    virtual void renderBody(RenderMode renderMode);
 
 private:
 

interface/src/avatar/AvatarManager.cpp

@@ -72,7 +72,7 @@ void AvatarManager::updateOtherAvatars(float deltaTime) {
     simulateAvatarFades(deltaTime);
 }
 
-void AvatarManager::renderAvatars(bool forShadowMapOrMirror, bool selfAvatarOnly) {
+void AvatarManager::renderAvatars(Avatar::RenderMode renderMode, bool selfAvatarOnly) {
     PerformanceWarning warn(Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings),
                             "Application::renderAvatars()");
     bool renderLookAtVectors = Menu::getInstance()->isOptionChecked(MenuOption::LookAtVectors);
@@ -85,13 +85,13 @@ void AvatarManager::renderAvatars(bool forShadowMapOrMirror, bool selfAvatarOnly
             if (!avatar->isInitialized()) {
                 continue;
             }
-            avatar->render(cameraPosition, forShadowMapOrMirror);
+            avatar->render(cameraPosition, renderMode);
             avatar->setDisplayingLookatVectors(renderLookAtVectors);
         }
-        renderAvatarFades(cameraPosition, forShadowMapOrMirror);
+        renderAvatarFades(cameraPosition, renderMode);
     } else {
         // just render myAvatar
-        _myAvatar->render(cameraPosition, forShadowMapOrMirror);
+        _myAvatar->render(cameraPosition, renderMode);
         _myAvatar->setDisplayingLookatVectors(renderLookAtVectors);
     }
 }
@@ -114,14 +114,14 @@ void AvatarManager::simulateAvatarFades(float deltaTime) {
     }
 }
 
-void AvatarManager::renderAvatarFades(const glm::vec3& cameraPosition, bool forShadowMap) {
+void AvatarManager::renderAvatarFades(const glm::vec3& cameraPosition, Avatar::RenderMode renderMode) {
     // render avatar fades
-    Glower glower(forShadowMap ? 0.0f : 1.0f);
+    Glower glower(renderMode == Avatar::NORMAL_RENDER_MODE ? 1.0f : 0.0f);
     
     foreach(const AvatarSharedPointer& fadingAvatar, _avatarFades) {
         Avatar* avatar = static_cast<Avatar*>(fadingAvatar.data());
         if (avatar != static_cast<Avatar*>(_myAvatar.data())) {
-            avatar->render(cameraPosition, forShadowMap);
+            avatar->render(cameraPosition, renderMode);
         }
     }
 }

interface/src/avatar/AvatarManager.h

@@ -29,7 +29,7 @@ public:
     MyAvatar* getMyAvatar() { return _myAvatar.data(); }
     
     void updateOtherAvatars(float deltaTime);
-    void renderAvatars(bool forShadowMapOrMirror = false, bool selfAvatarOnly = false);
+    void renderAvatars(Avatar::RenderMode renderMode, bool selfAvatarOnly = false);
     
     void clearOtherAvatars();
 
@@ -45,7 +45,7 @@ private:
     void processKillAvatar(const QByteArray& datagram);
 
     void simulateAvatarFades(float deltaTime);
-    void renderAvatarFades(const glm::vec3& cameraPosition, bool forShadowMap);
+    void renderAvatarFades(const glm::vec3& cameraPosition, Avatar::RenderMode renderMode);
     
     // virtual override
     AvatarHash::iterator erase(const AvatarHash::iterator& iterator);

interface/src/avatar/FaceModel.cpp

@@ -45,13 +45,6 @@ void FaceModel::simulate(float deltaTime) {
     Model::simulate(deltaTime, true, newJointStates);
 }
 
-bool FaceModel::render(float alpha) {
-    if (!Model::render(alpha)) {
-        return false;
-    }
-    return true;
-}
-
 void FaceModel::maybeUpdateNeckRotation(const JointState& parentState, const FBXJoint& joint, JointState& state) {
     // get the rotation axes in joint space and use them to adjust the rotation
     glm::mat3 axes = glm::mat3_cast(_rotation);

interface/src/avatar/FaceModel.h

@@ -22,7 +22,6 @@ public:
     FaceModel(Head* owningHead);
 
     void simulate(float deltaTime);
-    bool render(float alpha);
     
 protected:
 

interface/src/avatar/Head.cpp

@@ -168,8 +168,8 @@ void Head::simulate(float deltaTime, bool isMine, bool billboard) {
     _eyePosition = calculateAverageEyePosition();
 }
 
-void Head::render(float alpha) {
+void Head::render(float alpha, bool forShadowMap) {
-    if (_faceModel.render(alpha) && _renderLookatVectors) {
+    if (_faceModel.render(alpha, forShadowMap) && _renderLookatVectors) {
         renderLookatVectors(_leftEyePosition, _rightEyePosition, _lookAtPosition);
     }
 }

interface/src/avatar/Head.h

@@ -37,7 +37,7 @@ public:
     void init();
     void reset();
     void simulate(float deltaTime, bool isMine, bool billboard = false);
-    void render(float alpha);
+    void render(float alpha, bool forShadowMap);
     void setScale(float scale);
     void setPosition(glm::vec3 position) { _position = position; }
     void setGravity(glm::vec3 gravity) { _gravity = gravity; }

interface/src/avatar/MyAvatar.cpp

@@ -450,12 +450,12 @@ void MyAvatar::renderDebugBodyPoints() {
 }
 
 // virtual
-void MyAvatar::render(const glm::vec3& cameraPosition, bool forShadowMapOrMirror) {
+void MyAvatar::render(const glm::vec3& cameraPosition, RenderMode renderMode) {
     // don't render if we've been asked to disable local rendering
     if (!_shouldRender) {
         return; // exit early
     }
-    Avatar::render(cameraPosition, forShadowMapOrMirror);
+    Avatar::render(cameraPosition, renderMode);
 }
 
 void MyAvatar::renderHeadMouse() const {
@@ -638,20 +638,20 @@ void MyAvatar::setSkeletonModelURL(const QUrl& skeletonModelURL) {
     _billboardValid = false;
 }
 
-void MyAvatar::renderBody(bool forceRenderHead) {
+void MyAvatar::renderBody(RenderMode renderMode) {
     if (!(_skeletonModel.isRenderable() && getHead()->getFaceModel().isRenderable())) {
         return; // wait until both models are loaded
     }
     
     //  Render the body's voxels and head
-    _skeletonModel.render(1.0f);
+    _skeletonModel.render(1.0f, renderMode == SHADOW_RENDER_MODE);
 
     //  Render head so long as the camera isn't inside it
     const float RENDER_HEAD_CUTOFF_DISTANCE = 0.40f;
     Camera* myCamera = Application::getInstance()->getCamera();
-    if (forceRenderHead || (glm::length(myCamera->getPosition() - getHead()->calculateAverageEyePosition()) >
+    if (renderMode != NORMAL_RENDER_MODE || (glm::length(myCamera->getPosition() - getHead()->calculateAverageEyePosition()) >
             RENDER_HEAD_CUTOFF_DISTANCE * _scale)) {
-        getHead()->render(1.0f);
+        getHead()->render(1.0f, renderMode == SHADOW_RENDER_MODE);
     }
     getHand()->render(true);
 }

interface/src/avatar/MyAvatar.h

@@ -35,8 +35,8 @@ public:
     void simulate(float deltaTime);
     void updateFromGyros(float deltaTime);
 
-    void render(const glm::vec3& cameraPosition, bool forShadowMapOrMirror = false);
+    void render(const glm::vec3& cameraPosition, RenderMode renderMode = NORMAL_RENDER_MODE);
-    void renderBody(bool forceRenderHead);
+    void renderBody(RenderMode renderMode);
     void renderDebugBodyPoints();
     void renderHeadMouse() const;
 

interface/src/avatar/SkeletonModel.cpp

@@ -62,17 +62,6 @@ void SkeletonModel::simulate(float deltaTime, bool fullUpdate) {
     }
 }
 
-bool SkeletonModel::render(float alpha) {
-
-    if (_jointStates.isEmpty()) {
-        return false;
-    }
-
-    Model::render(alpha);
-
-    return true;
-}
-
 void SkeletonModel::getHandShapes(int jointIndex, QVector<const Shape*>& shapes) const {
     if (jointIndex == -1) {
         return;

interface/src/avatar/SkeletonModel.h

@@ -23,7 +23,6 @@ public:
     SkeletonModel(Avatar* owningAvatar);
     
     void simulate(float deltaTime, bool fullUpdate = true);
-    bool render(float alpha);
 
     /// \param jointIndex index of hand joint
     /// \param shapes[out] list in which is stored pointers to hand shapes

interface/src/renderer/Model.cpp

@@ -43,11 +43,14 @@ Model::~Model() {
 
 ProgramObject Model::_program;
 ProgramObject Model::_normalMapProgram;
+ProgramObject Model::_shadowProgram;
 ProgramObject Model::_skinProgram;
 ProgramObject Model::_skinNormalMapProgram;
+ProgramObject Model::_skinShadowProgram;
 int Model::_normalMapTangentLocation;
 Model::SkinLocations Model::_skinLocations;
 Model::SkinLocations Model::_skinNormalMapLocations;
+Model::SkinLocations Model::_skinShadowLocations;
 
 void Model::initSkinProgram(ProgramObject& program, Model::SkinLocations& locations) {
     program.bind();
@@ -93,6 +96,11 @@ void Model::init() {
         _normalMapTangentLocation = _normalMapProgram.attributeLocation("tangent");
         _normalMapProgram.release();
         
+        _shadowProgram.addShaderFromSourceFile(QGLShader::Vertex, Application::resourcesPath() + "shaders/model_shadow.vert");
+        _shadowProgram.addShaderFromSourceFile(QGLShader::Fragment, Application::resourcesPath() +
+            "shaders/model_shadow.frag");
+        _shadowProgram.link();
+        
         _skinProgram.addShaderFromSourceFile(QGLShader::Vertex, Application::resourcesPath()
                                              + "shaders/skin_model.vert");
         _skinProgram.addShaderFromSourceFile(QGLShader::Fragment, Application::resourcesPath()
@@ -108,6 +116,14 @@ void Model::init() {
         _skinNormalMapProgram.link();
         
         initSkinProgram(_skinNormalMapProgram, _skinNormalMapLocations);
+        
+        _skinShadowProgram.addShaderFromSourceFile(QGLShader::Vertex,
+            Application::resourcesPath() + "shaders/skin_model_shadow.vert");
+        _skinShadowProgram.addShaderFromSourceFile(QGLShader::Fragment,
+            Application::resourcesPath() + "shaders/model_shadow.frag");
+        _skinShadowProgram.link();
+        
+        initSkinProgram(_skinShadowProgram, _skinShadowLocations);
     }
 }
 
@@ -167,7 +183,7 @@ void Model::simulate(float deltaTime, bool fullUpdate) {
     simulate(deltaTime, fullUpdate, updateGeometry());
 }
 
-bool Model::render(float alpha) {
+bool Model::render(float alpha, bool forShadowMap) {
     // render the attachments
     foreach (Model* attachment, _attachments) {
         attachment->render(alpha);
@@ -198,13 +214,13 @@ bool Model::render(float alpha) {
     glEnable(GL_ALPHA_TEST);
     glAlphaFunc(GL_GREATER, 0.5f * alpha);
     
-    renderMeshes(alpha, false);
+    renderMeshes(alpha, forShadowMap, false);
     
     glDisable(GL_ALPHA_TEST);
     
     // render translucent meshes afterwards, with back face culling
     
-    renderMeshes(alpha, true);
+    renderMeshes(alpha, forShadowMap, true);
     
     glDisable(GL_CULL_FACE);
     
@@ -960,7 +976,7 @@ void Model::deleteGeometry() {
     }
 }
 
-void Model::renderMeshes(float alpha, bool translucent) {
+void Model::renderMeshes(float alpha, bool forShadowMap, bool translucent) {
     const FBXGeometry& geometry = _geometry->getFBXGeometry();
     const QVector<NetworkMesh>& networkMeshes = _geometry->getMeshes();
     
@@ -985,7 +1001,12 @@ void Model::renderMeshes(float alpha, bool translucent) {
         ProgramObject* program = &_program;
         ProgramObject* skinProgram = &_skinProgram;
         SkinLocations* skinLocations = &_skinLocations;
-        if (!mesh.tangents.isEmpty()) {
+        if (forShadowMap) {
+            program = &_shadowProgram;
+            skinProgram = &_skinShadowProgram;
+            skinLocations = &_skinShadowLocations;
+            
+        } else if (!mesh.tangents.isEmpty()) {
             program = &_normalMapProgram;
             skinProgram = &_skinNormalMapProgram;
             skinLocations = &_skinNormalMapLocations;
@@ -1018,7 +1039,7 @@ void Model::renderMeshes(float alpha, bool translucent) {
         }
 
         if (mesh.blendshapes.isEmpty()) {
-            if (!mesh.tangents.isEmpty()) {
+            if (!(mesh.tangents.isEmpty() || forShadowMap)) {
                 activeProgram->setAttributeBuffer(tangentLocation, GL_FLOAT, vertexCount * 2 * sizeof(glm::vec3), 3);
                 activeProgram->enableAttributeArray(tangentLocation);
             }
@@ -1028,7 +1049,7 @@ void Model::renderMeshes(float alpha, bool translucent) {
                 (mesh.tangents.size() + mesh.colors.size()) * sizeof(glm::vec3)));    
         
         } else {
-            if (!mesh.tangents.isEmpty()) {
+            if (!(mesh.tangents.isEmpty() || forShadowMap)) {
                 activeProgram->setAttributeBuffer(tangentLocation, GL_FLOAT, 0, 3);
                 activeProgram->enableAttributeArray(tangentLocation);
             }
@@ -1057,6 +1078,10 @@ void Model::renderMeshes(float alpha, bool translucent) {
                 continue;
             }
             // apply material properties
+            if (forShadowMap) {
+                glBindTexture(GL_TEXTURE_2D, 0);
+                
+            } else {
                 glm::vec4 diffuse = glm::vec4(part.diffuseColor, alpha);
                 glm::vec4 specular = glm::vec4(part.specularColor, alpha);
                 glMaterialfv(GL_FRONT, GL_AMBIENT, (const float*)&diffuse);
@@ -1065,12 +1090,10 @@ void Model::renderMeshes(float alpha, bool translucent) {
                 glMaterialf(GL_FRONT, GL_SHININESS, part.shininess);
             
                 Texture* diffuseMap = networkPart.diffuseTexture.data();
-            if (mesh.isEye) {
+                if (mesh.isEye && diffuseMap) {
-                if (diffuseMap) {
                     diffuseMap = (_dilatedTextures[i][j] =
                         static_cast<DilatableNetworkTexture*>(diffuseMap)->getDilatedTexture(_pupilDilation)).data();
                 }
-            }
                 glBindTexture(GL_TEXTURE_2D, !diffuseMap ?
                     Application::getInstance()->getTextureCache()->getWhiteTextureID() : diffuseMap->getID());
                 
@@ -1081,7 +1104,7 @@ void Model::renderMeshes(float alpha, bool translucent) {
                         Application::getInstance()->getTextureCache()->getBlueTextureID() : normalMap->getID());
                     glActiveTexture(GL_TEXTURE0);
                 }
-            
+            }
             glDrawRangeElementsEXT(GL_QUADS, 0, vertexCount - 1, part.quadIndices.size(), GL_UNSIGNED_INT, (void*)offset);
             offset += part.quadIndices.size() * sizeof(int);
             glDrawRangeElementsEXT(GL_TRIANGLES, 0, vertexCount - 1, part.triangleIndices.size(),
@@ -1096,7 +1119,7 @@ void Model::renderMeshes(float alpha, bool translucent) {
             glDisableClientState(GL_TEXTURE_COORD_ARRAY);
         }
         
-        if (!mesh.tangents.isEmpty()) {
+        if (!(mesh.tangents.isEmpty() || forShadowMap)) {
             glActiveTexture(GL_TEXTURE1);
             glBindTexture(GL_TEXTURE_2D, 0);
             glActiveTexture(GL_TEXTURE0);

interface/src/renderer/Model.h

@@ -58,7 +58,7 @@ public:
     void createCollisionShapes();
     void updateShapePositions();
     void simulate(float deltaTime, bool fullUpdate = true);
-    bool render(float alpha);
+    bool render(float alpha = 1.0f, bool forShadowMap = false);
     
     /// Sets the URL of the model to render.
     /// \param fallback the URL of a fallback model to render if the requested model fails to load
@@ -261,7 +261,7 @@ private:
     
     void applyNextGeometry();
     void deleteGeometry();
-    void renderMeshes(float alpha, bool translucent);
+    void renderMeshes(float alpha, bool forShadowMap, bool translucent);
     
     QSharedPointer<NetworkGeometry> _baseGeometry; ///< reference required to prevent collection of base
     QSharedPointer<NetworkGeometry> _nextBaseGeometry;
@@ -283,8 +283,10 @@ private:
     
     static ProgramObject _program;
     static ProgramObject _normalMapProgram;
+    static ProgramObject _shadowProgram;
     static ProgramObject _skinProgram;
     static ProgramObject _skinNormalMapProgram;
+    static ProgramObject _skinShadowProgram;
     
     static int _normalMapTangentLocation;
     
@@ -298,6 +300,7 @@ private:
     
     static SkinLocations _skinLocations;
     static SkinLocations _skinNormalMapLocations;
+    static SkinLocations _skinShadowLocations;
     
     static void initSkinProgram(ProgramObject& program, SkinLocations& locations);
     static QVector<JointState> createJointStates(const FBXGeometry& geometry);

libraries/octree/src/ViewFrustum.cpp

@@ -30,6 +30,9 @@ ViewFrustum::ViewFrustum() :
     _direction(IDENTITY_FRONT),
     _up(IDENTITY_UP),
     _right(IDENTITY_RIGHT),
+    _orthographic(false),
+    _width(1.0f),
+    _height(1.0f),
     _fieldOfView(0.0),
     _aspectRatio(1.0f),
     _nearClip(0.1f),
@@ -62,6 +65,11 @@ void ViewFrustum::setOrientation(const glm::quat& orientationAsQuaternion) {
 //     http://www.lighthouse3d.com/tutorials/view-frustum-culling/view-frustums-shape/
 //
 void ViewFrustum::calculate() {
+    if (_orthographic) {
+        calculateOrthographic();
+        return;
+    }
+
     // compute the off-axis frustum parameters as we would for glFrustum
     float left, right, bottom, top, nearVal, farVal;
     glm::vec4 nearClipPlane, farClipPlane;
@@ -133,6 +141,49 @@ void ViewFrustum::calculate() {
     _keyholeBoundingBox = AABox(corner,(_keyholeRadius * 2.0f));
 }
 
+void ViewFrustum::calculateOrthographic() {
+    float halfWidth = _width * 0.5f;
+    float halfHeight = _height * 0.5f;
+
+    // find the corners of the view box in world space
+    glm::mat4 worldMatrix = glm::translate(_position) * glm::mat4(glm::mat3(_right, _up, -_direction)) *
+        glm::translate(_eyeOffsetPosition) * glm::mat4_cast(_eyeOffsetOrientation);
+    _farTopLeft = glm::vec3(worldMatrix * glm::vec4(-halfWidth, halfHeight, -_farClip, 1.0f));
+    _farTopRight = glm::vec3(worldMatrix * glm::vec4(halfWidth, halfHeight, -_farClip, 1.0f));
+    _farBottomLeft = glm::vec3(worldMatrix * glm::vec4(-halfWidth, -halfHeight, -_farClip, 1.0f));
+    _farBottomRight = glm::vec3(worldMatrix * glm::vec4(halfWidth, -halfHeight, -_farClip, 1.0f));
+    _nearTopLeft = glm::vec3(worldMatrix * glm::vec4(-halfWidth, halfHeight, -_nearClip, 1.0f));
+    _nearTopRight = glm::vec3(worldMatrix * glm::vec4(halfWidth, halfHeight, -_nearClip, 1.0f));
+    _nearBottomLeft = glm::vec3(worldMatrix * glm::vec4(-halfWidth, -halfHeight, -_nearClip, 1.0f));
+    _nearBottomRight = glm::vec3(worldMatrix * glm::vec4(halfWidth, -halfHeight, -_nearClip, 1.0f));
+    
+    // compute the offset position and axes in world space
+    _offsetPosition = glm::vec3(worldMatrix * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f));
+    _offsetDirection = glm::vec3(worldMatrix * glm::vec4(0.0f, 0.0f, -1.0f, 0.0f));
+    _offsetUp = glm::vec3(worldMatrix * glm::vec4(0.0f, 1.0f, 0.0f, 0.0f));
+    _offsetRight = glm::vec3(worldMatrix * glm::vec4(1.0f, 0.0f, 0.0f, 0.0f));
+    
+    _planes[TOP_PLANE].set3Points(_nearTopRight, _nearTopLeft, _farTopLeft);
+    _planes[BOTTOM_PLANE].set3Points(_nearBottomLeft, _nearBottomRight, _farBottomRight);
+    _planes[LEFT_PLANE].set3Points(_nearBottomLeft, _farBottomLeft, _farTopLeft);
+    _planes[RIGHT_PLANE].set3Points(_farBottomRight, _nearBottomRight, _nearTopRight);
+    _planes[NEAR_PLANE].set3Points(_nearBottomRight, _nearBottomLeft, _nearTopLeft);
+    _planes[FAR_PLANE].set3Points(_farBottomLeft, _farBottomRight, _farTopRight);
+
+    // Also calculate our projection matrix in case people want to project points...
+    // Projection matrix : Field of View, ratio, display range : near to far
+    glm::mat4 projection = glm::ortho(-halfWidth, halfWidth, -halfHeight, halfHeight, _nearClip, _farClip);
+    glm::vec3 lookAt = _position + _direction;
+    glm::mat4 view = glm::lookAt(_position, lookAt, _up);
+
+    // Our ModelViewProjection : multiplication of our 3 matrices (note: model is identity, so we can drop it)
+    _ourModelViewProjectionMatrix = projection * view; // Remember, matrix multiplication is the other way around
+
+    // Set up our keyhole bounding box...
+    glm::vec3 corner = _position - _keyholeRadius;
+    _keyholeBoundingBox = AABox(corner, (_keyholeRadius * 2.0f));
+}
+
 //enum { TOP_PLANE = 0, BOTTOM_PLANE, LEFT_PLANE, RIGHT_PLANE, NEAR_PLANE, FAR_PLANE };
 const char* ViewFrustum::debugPlaneName (int plane) const {
     switch (plane) {

libraries/octree/src/ViewFrustum.h

@@ -41,6 +41,9 @@ public:
     const glm::vec3& getRight() const { return _right; }
 
     // setters for lens attributes
+    void setOrthographic(bool orthographic) { _orthographic = orthographic; }
+    void setWidth(float width) { _width = width; }
+    void setHeight(float height) { _height = height; }
     void setFieldOfView(float f) { _fieldOfView = f; }
     void setAspectRatio(float a) { _aspectRatio = a; }
     void setNearClip(float n) { _nearClip = n; }
@@ -50,6 +53,9 @@ public:
     void setEyeOffsetOrientation(const glm::quat& o) { _eyeOffsetOrientation = o; }
 
     // getters for lens attributes
+    bool isOrthographic() const { return _orthographic; }
+    float getWidth() const { return _width; }
+    float getHeight() const { return _height; }
     float getFieldOfView() const { return _fieldOfView; }
     float getAspectRatio() const { return _aspectRatio; }
     float getNearClip() const { return _nearClip; }
@@ -114,6 +120,8 @@ private:
     ViewFrustum::location sphereInKeyhole(const glm::vec3& center, float radius) const;
     ViewFrustum::location boxInKeyhole(const AABox& box) const;
 
+    void calculateOrthographic();
+
     // camera location/orientation attributes
     glm::vec3   _position; // the position in TREE_SCALE
     glm::vec3   _positionVoxelScale; // the position in voxel scale
@@ -125,6 +133,9 @@ private:
     glm::vec3   _right;
 
     // Lens attributes
+    bool _orthographic;
+    float _width;
+    float _height;
     float _fieldOfView; // degrees
     float _aspectRatio;
     float _nearClip;