Basic support for shadows on models.

interface/resources/shaders/model.vert

@@ -31,6 +31,9 @@ void main(void) {
     // and the texture coordinates
     gl_TexCoord[0] = gl_MultiTexCoord0;
     
+    // and the shadow texture coordinates
+    gl_TexCoord[1] = vec4(dot(gl_EyePlaneS[0], position), dot(gl_EyePlaneT[0], position), dot(gl_EyePlaneR[0], position), 1.0); 
+      
     // use standard pipeline transform
     gl_Position = ftransform();
 }

interface/resources/shaders/model_normal_map.vert

@@ -36,6 +36,10 @@ void main(void) {
     // and the texture coordinates
     gl_TexCoord[0] = gl_MultiTexCoord0;
     
+    // and the shadow texture coordinates
+    gl_TexCoord[1] = vec4(dot(gl_EyePlaneS[0], interpolatedPosition), dot(gl_EyePlaneT[0], interpolatedPosition),
+        dot(gl_EyePlaneR[0], interpolatedPosition), 1.0); 
+      
     // use standard pipeline transform
     gl_Position = ftransform();
 }

interface/resources/shaders/skin_model.vert

@@ -43,5 +43,8 @@ void main(void) {
     // and the texture coordinates
     gl_TexCoord[0] = gl_MultiTexCoord0;
     
+    // and the shadow texture coordinates
+    gl_TexCoord[1] = vec4(dot(gl_EyePlaneS[0], position), dot(gl_EyePlaneT[0], position), dot(gl_EyePlaneR[0], position), 1.0); 
+        
     gl_Position = gl_ProjectionMatrix * position;
 }

interface/resources/shaders/skin_model_normal_map.vert

@@ -52,5 +52,9 @@ void main(void) {
     // and the texture coordinates
     gl_TexCoord[0] = gl_MultiTexCoord0;
     
+    // and the shadow texture coordinates
+    gl_TexCoord[1] = vec4(dot(gl_EyePlaneS[0], interpolatedPosition), dot(gl_EyePlaneT[0], interpolatedPosition),
+        dot(gl_EyePlaneR[0], interpolatedPosition), 1.0); 
+        
     gl_Position = gl_ProjectionMatrix * interpolatedPosition;
 }

interface/src/renderer/Model.cpp

@@ -59,18 +59,39 @@ ProgramObject Model::_program;
 ProgramObject Model::_normalMapProgram;
 ProgramObject Model::_specularMapProgram;
 ProgramObject Model::_normalSpecularMapProgram;
+
+ProgramObject Model::_shadowMapProgram;
+ProgramObject Model::_shadowNormalMapProgram;
+ProgramObject Model::_shadowSpecularMapProgram;
+ProgramObject Model::_shadowNormalSpecularMapProgram;
+
 ProgramObject Model::_shadowProgram;
+
 ProgramObject Model::_skinProgram;
 ProgramObject Model::_skinNormalMapProgram;
 ProgramObject Model::_skinSpecularMapProgram;
 ProgramObject Model::_skinNormalSpecularMapProgram;
+
+ProgramObject Model::_skinShadowMapProgram;
+ProgramObject Model::_skinShadowNormalMapProgram;
+ProgramObject Model::_skinShadowSpecularMapProgram;
+ProgramObject Model::_skinShadowNormalSpecularMapProgram;
+
 ProgramObject Model::_skinShadowProgram;
+
 int Model::_normalMapTangentLocation;
 int Model::_normalSpecularMapTangentLocation;
+int Model::_shadowNormalMapTangentLocation;
+int Model::_shadowNormalSpecularMapTangentLocation;
+
 Model::SkinLocations Model::_skinLocations;
 Model::SkinLocations Model::_skinNormalMapLocations;
 Model::SkinLocations Model::_skinSpecularMapLocations;
 Model::SkinLocations Model::_skinNormalSpecularMapLocations;
+Model::SkinLocations Model::_skinShadowMapLocations;
+Model::SkinLocations Model::_skinShadowNormalMapLocations;
+Model::SkinLocations Model::_skinShadowSpecularMapLocations;
+Model::SkinLocations Model::_skinShadowNormalSpecularMapLocations;
 Model::SkinLocations Model::_skinShadowLocations;
 
 void Model::setScale(const glm::vec3& scale) {
@@ -100,7 +121,8 @@ void Model::setOffset(const glm::vec3& offset) {
 }
 
 
-void Model::initSkinProgram(ProgramObject& program, Model::SkinLocations& locations, int specularTextureUnit) {
+void Model::initSkinProgram(ProgramObject& program, Model::SkinLocations& locations,
+        int specularTextureUnit, int shadowTextureUnit) {
     program.bind();
     locations.clusterMatrices = program.uniformLocation("clusterMatrices");
     locations.clusterIndices = program.attributeLocation("clusterIndices");
@@ -109,6 +131,7 @@ void Model::initSkinProgram(ProgramObject& program, Model::SkinLocations& locati
     program.setUniformValue("diffuseMap", 0);
     program.setUniformValue("normalMap", 1);
     program.setUniformValue("specularMap", specularTextureUnit);
+    program.setUniformValue("shadowMap", shadowTextureUnit);
     program.release();
 }
 
@@ -170,7 +193,7 @@ void Model::init() {
         _program.link();
         
         _program.bind();
-        _program.setUniformValue("texture", 0);
+        _program.setUniformValue("diffuseMap", 0);
         _program.release();
         
         _normalMapProgram.addShaderFromSourceFile(QGLShader::Vertex,
@@ -209,11 +232,63 @@ void Model::init() {
         _normalSpecularMapTangentLocation = _normalMapProgram.attributeLocation("tangent");
         _normalSpecularMapProgram.release();
         
+        
+        _shadowMapProgram.addShaderFromSourceFile(QGLShader::Vertex, Application::resourcesPath() + "shaders/model.vert");
+        _shadowMapProgram.addShaderFromSourceFile(QGLShader::Fragment, Application::resourcesPath() +
+            "shaders/model_shadow_map.frag");
+        _shadowMapProgram.link();
+        
+        _shadowMapProgram.bind();
+        _shadowMapProgram.setUniformValue("diffuseMap", 0);
+        _shadowMapProgram.setUniformValue("shadowMap", 1);
+        _shadowMapProgram.release();
+        
+        _shadowNormalMapProgram.addShaderFromSourceFile(QGLShader::Vertex,
+            Application::resourcesPath() + "shaders/model_normal_map.vert");
+        _shadowNormalMapProgram.addShaderFromSourceFile(QGLShader::Fragment,
+            Application::resourcesPath() + "shaders/model_shadow_normal_map.frag");
+        _shadowNormalMapProgram.link();
+        
+        _shadowNormalMapProgram.bind();
+        _shadowNormalMapProgram.setUniformValue("diffuseMap", 0);
+        _shadowNormalMapProgram.setUniformValue("normalMap", 1);
+        _shadowNormalMapProgram.setUniformValue("shadowMap", 2);
+        _shadowNormalMapTangentLocation = _shadowNormalMapProgram.attributeLocation("tangent");
+        _shadowNormalMapProgram.release();
+        
+        _shadowSpecularMapProgram.addShaderFromSourceFile(QGLShader::Vertex,
+            Application::resourcesPath() + "shaders/model.vert");
+        _shadowSpecularMapProgram.addShaderFromSourceFile(QGLShader::Fragment,
+            Application::resourcesPath() + "shaders/model_shadow_specular_map.frag");
+        _shadowSpecularMapProgram.link();
+        
+        _shadowSpecularMapProgram.bind();
+        _shadowSpecularMapProgram.setUniformValue("diffuseMap", 0);
+        _shadowSpecularMapProgram.setUniformValue("specularMap", 1);
+         _shadowSpecularMapProgram.setUniformValue("shadowMap", 2);
+        _shadowSpecularMapProgram.release();
+        
+        _shadowNormalSpecularMapProgram.addShaderFromSourceFile(QGLShader::Vertex,
+            Application::resourcesPath() + "shaders/model_normal_map.vert");
+        _shadowNormalSpecularMapProgram.addShaderFromSourceFile(QGLShader::Fragment,
+            Application::resourcesPath() + "shaders/model_shadow_normal_specular_map.frag");
+        _shadowNormalSpecularMapProgram.link();
+        
+        _shadowNormalSpecularMapProgram.bind();
+        _shadowNormalSpecularMapProgram.setUniformValue("diffuseMap", 0);
+        _shadowNormalSpecularMapProgram.setUniformValue("normalMap", 1);
+        _shadowNormalSpecularMapProgram.setUniformValue("specularMap", 2);
+        _shadowNormalSpecularMapProgram.setUniformValue("shadowMap", 3);
+        _shadowNormalSpecularMapTangentLocation = _normalMapProgram.attributeLocation("tangent");
+        _shadowNormalSpecularMapProgram.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() + "shaders/model.frag");
         _skinProgram.link();
@@ -244,6 +319,40 @@ void Model::init() {
         
         initSkinProgram(_skinNormalSpecularMapProgram, _skinNormalSpecularMapLocations, 2);
         
+        
+        _skinShadowMapProgram.addShaderFromSourceFile(QGLShader::Vertex, Application::resourcesPath() +
+            "shaders/skin_model.vert");
+        _skinShadowMapProgram.addShaderFromSourceFile(QGLShader::Fragment, Application::resourcesPath() +
+            "shaders/model_shadow_map.frag");
+        _skinShadowMapProgram.link();
+        
+        initSkinProgram(_skinShadowMapProgram, _skinShadowMapLocations);
+        
+        _skinShadowNormalMapProgram.addShaderFromSourceFile(QGLShader::Vertex,
+            Application::resourcesPath() + "shaders/skin_model_normal_map.vert");
+        _skinShadowNormalMapProgram.addShaderFromSourceFile(QGLShader::Fragment,
+            Application::resourcesPath() + "shaders/model_shadow_normal_map.frag");
+        _skinShadowNormalMapProgram.link();
+        
+        initSkinProgram(_skinShadowNormalMapProgram, _skinShadowNormalMapLocations, 1, 2);
+        
+        _skinShadowSpecularMapProgram.addShaderFromSourceFile(QGLShader::Vertex,
+            Application::resourcesPath() + "shaders/skin_model.vert");
+        _skinShadowSpecularMapProgram.addShaderFromSourceFile(QGLShader::Fragment,
+            Application::resourcesPath() + "shaders/model_shadow_specular_map.frag");
+        _skinShadowSpecularMapProgram.link();
+        
+        initSkinProgram(_skinShadowSpecularMapProgram, _skinShadowSpecularMapLocations, 1, 2);
+        
+        _skinShadowNormalSpecularMapProgram.addShaderFromSourceFile(QGLShader::Vertex,
+            Application::resourcesPath() + "shaders/skin_model_normal_map.vert");
+        _skinShadowNormalSpecularMapProgram.addShaderFromSourceFile(QGLShader::Fragment,
+            Application::resourcesPath() + "shaders/model_shadow_normal_specular_map.frag");
+        _skinShadowNormalSpecularMapProgram.link();
+        
+        initSkinProgram(_skinNormalSpecularMapProgram, _skinShadowNormalSpecularMapLocations, 2, 3);
+        
+        
         _skinShadowProgram.addShaderFromSourceFile(QGLShader::Vertex,
             Application::resourcesPath() + "shaders/skin_model_shadow.vert");
         _skinShadowProgram.addShaderFromSourceFile(QGLShader::Fragment,
@@ -1485,6 +1594,12 @@ void Model::renderMeshes(float alpha, RenderMode mode, bool translucent) {
     const FBXGeometry& geometry = _geometry->getFBXGeometry();
     const QVector<NetworkMesh>& networkMeshes = _geometry->getMeshes();
     
+    bool receiveShadows = Menu::getInstance()->isOptionChecked(MenuOption::Shadows);
+    if (receiveShadows) {
+        glTexGenfv(GL_S, GL_EYE_PLANE, (const GLfloat*)&Application::getInstance()->getShadowMatrix()[0]);
+        glTexGenfv(GL_T, GL_EYE_PLANE, (const GLfloat*)&Application::getInstance()->getShadowMatrix()[1]);
+        glTexGenfv(GL_R, GL_EYE_PLANE, (const GLfloat*)&Application::getInstance()->getShadowMatrix()[2]);
+    }
     for (int i = 0; i < networkMeshes.size(); i++) {
         // exit early if the translucency doesn't match what we're drawing
         const NetworkMesh& networkMesh = networkMeshes.at(i);
@@ -1507,6 +1622,7 @@ void Model::renderMeshes(float alpha, RenderMode mode, bool translucent) {
         ProgramObject* skinProgram = &_skinProgram;
         SkinLocations* skinLocations = &_skinLocations;
         GLenum specularTextureUnit = 0;
+        GLenum shadowTextureUnit = 0;
         if (mode == SHADOW_RENDER_MODE) {
             program = &_shadowProgram;
             skinProgram = &_skinShadowProgram;
@@ -1514,21 +1630,45 @@ void Model::renderMeshes(float alpha, RenderMode mode, bool translucent) {
             
         } else if (!mesh.tangents.isEmpty()) {
             if (mesh.hasSpecularTexture()) {
-                program = &_normalSpecularMapProgram;
+                if (receiveShadows) {
-                skinProgram = &_skinNormalSpecularMapProgram;
+                    program = &_shadowNormalSpecularMapProgram;
-                skinLocations = &_skinNormalSpecularMapLocations;
+                    skinProgram = &_skinShadowNormalSpecularMapProgram;
+                    skinLocations = &_skinShadowNormalSpecularMapLocations;
+                    shadowTextureUnit = GL_TEXTURE3;
+                } else {
+                    program = &_normalSpecularMapProgram;
+                    skinProgram = &_skinNormalSpecularMapProgram;
+                    skinLocations = &_skinNormalSpecularMapLocations;
+                }
                 specularTextureUnit = GL_TEXTURE2;
                 
+            } else if (receiveShadows) {
+                program = &_shadowNormalMapProgram;
+                skinProgram = &_skinShadowNormalMapProgram;
+                skinLocations = &_skinShadowNormalMapLocations;
             } else {
                 program = &_normalMapProgram;
                 skinProgram = &_skinNormalMapProgram;
                 skinLocations = &_skinNormalMapLocations;
             }
         } else if (mesh.hasSpecularTexture()) {
-            program = &_specularMapProgram;
+            if (receiveShadows) {
-            skinProgram = &_skinSpecularMapProgram;
+                program = &_shadowSpecularMapProgram;
-            skinLocations = &_skinSpecularMapLocations;
+                skinProgram = &_skinShadowSpecularMapProgram;
-            specularTextureUnit = GL_TEXTURE1;
+                skinLocations = &_skinShadowSpecularMapLocations;
+                specularTextureUnit = GL_TEXTURE1;
+                shadowTextureUnit = GL_TEXTURE2;
+            } else {
+                program = &_specularMapProgram;
+                skinProgram = &_skinSpecularMapProgram;
+                skinLocations = &_skinSpecularMapLocations;
+                specularTextureUnit = GL_TEXTURE1;
+            }
+        } else if (receiveShadows) {
+            program = &_shadowMapProgram;
+            skinProgram = &_skinShadowMapProgram;
+            skinLocations = &_skinShadowMapLocations;
+            shadowTextureUnit = GL_TEXTURE1;
         }
         
         const MeshState& state = _meshStates.at(i);
@@ -1617,8 +1757,7 @@ void Model::renderMeshes(float alpha, RenderMode mode, bool translucent) {
                     Application::getInstance()->getTextureCache()->getWhiteTextureID() : diffuseMap->getID());
                 
                 
-                if (!mesh.tangents.isEmpty()) {
+                if (!mesh.tangents.isEmpty()) {                 
-                    specularTextureUnit = GL_TEXTURE2;                    
                     glActiveTexture(GL_TEXTURE1);                
                     Texture* normalMap = networkPart.normalTexture.data();
                     glBindTexture(GL_TEXTURE_2D, !normalMap ?
@@ -1633,6 +1772,12 @@ void Model::renderMeshes(float alpha, RenderMode mode, bool translucent) {
                         Application::getInstance()->getTextureCache()->getWhiteTextureID() : specularMap->getID());
                     glActiveTexture(GL_TEXTURE0);
                 }
+                
+                if (shadowTextureUnit) {
+                    glActiveTexture(shadowTextureUnit);
+                    glBindTexture(GL_TEXTURE_2D, Application::getInstance()->getTextureCache()->getShadowDepthTextureID());
+                    glActiveTexture(GL_TEXTURE0);
+                }
             }
             glDrawRangeElementsEXT(GL_QUADS, 0, vertexCount - 1, part.quadIndices.size(), GL_UNSIGNED_INT, (void*)offset);
             offset += part.quadIndices.size() * sizeof(int);
@@ -1662,6 +1807,12 @@ void Model::renderMeshes(float alpha, RenderMode mode, bool translucent) {
             glActiveTexture(GL_TEXTURE0);
         }
         
+        if (shadowTextureUnit) {
+            glActiveTexture(shadowTextureUnit);
+            glBindTexture(GL_TEXTURE_2D, 0);
+            glActiveTexture(GL_TEXTURE0);
+        }
+        
         if (state.clusterMatrices.size() > 1) {
             skinProgram->disableAttributeArray(skinLocations->clusterIndices);
             skinProgram->disableAttributeArray(skinLocations->clusterWeights);  

interface/src/renderer/Model.h

@@ -340,19 +340,36 @@ private:
 
     QList<AnimationHandlePointer> _runningAnimations;
 
+    bool _receivesShadows;
+
     static ProgramObject _program;
     static ProgramObject _normalMapProgram;
     static ProgramObject _specularMapProgram;
     static ProgramObject _normalSpecularMapProgram;
+    
+    static ProgramObject _shadowMapProgram;
+    static ProgramObject _shadowNormalMapProgram;
+    static ProgramObject _shadowSpecularMapProgram;
+    static ProgramObject _shadowNormalSpecularMapProgram;
+    
     static ProgramObject _shadowProgram;
+    
     static ProgramObject _skinProgram;
     static ProgramObject _skinNormalMapProgram;
     static ProgramObject _skinSpecularMapProgram;
     static ProgramObject _skinNormalSpecularMapProgram;
+    
+    static ProgramObject _skinShadowMapProgram;
+    static ProgramObject _skinShadowNormalMapProgram;
+    static ProgramObject _skinShadowSpecularMapProgram;
+    static ProgramObject _skinShadowNormalSpecularMapProgram;
+    
     static ProgramObject _skinShadowProgram;
     
     static int _normalMapTangentLocation;
     static int _normalSpecularMapTangentLocation;
+    static int _shadowNormalMapTangentLocation;
+    static int _shadowNormalSpecularMapTangentLocation;
     
     class SkinLocations {
     public:
@@ -366,9 +383,14 @@ private:
     static SkinLocations _skinNormalMapLocations;
     static SkinLocations _skinSpecularMapLocations;
     static SkinLocations _skinNormalSpecularMapLocations;
+    static SkinLocations _skinShadowMapLocations;
+    static SkinLocations _skinShadowNormalMapLocations;
+    static SkinLocations _skinShadowSpecularMapLocations;
+    static SkinLocations _skinShadowNormalSpecularMapLocations;
     static SkinLocations _skinShadowLocations;
     
-    static void initSkinProgram(ProgramObject& program, SkinLocations& locations, int specularTextureUnit = 1);
+    static void initSkinProgram(ProgramObject& program, SkinLocations& locations,
+        int specularTextureUnit = 1, int shadowTextureUnit = 1);
 };
 
 Q_DECLARE_METATYPE(QPointer<Model>)