boundary on point cloud (weirdly chopped from last commit)

zoneb/bin/data/shaders/bound.frag

@@ -3,6 +3,7 @@ precision mediump float;
 #endif
 
 uniform sampler2D   u_depth;
+uniform sampler2D   u_ofcam;
 uniform sampler2D   u_buffer0;
 uniform sampler2D   u_buffer1;
 
@@ -16,7 +17,7 @@ varying vec2        v_texcoord;
 
 float depthToSilhouette(float depth) {
   if(depth < 0.005) return 0;
-  if(depth > 0.1) return 0;
+  // if(depth > 0.1) return 0;
   else return 1;
 }
 
@@ -47,7 +48,8 @@ void main() {
   //  BUFFER_1 (u_buffer1)
   vec4 color = vec4(0,0,0,1);
   if(u_init) {
-    float tmp = texture2D(u_depth, st).r;
+    vec3 tmpc = texture2D(u_ofcam, st).rgb;
+    float tmp = tmpc.r + tmpc.g + tmpc.b;
     color.rgb = vec3(depthToSilhouette(tmp));
   }
   else {
@@ -84,8 +86,8 @@ void main() {
 #else
   // Main Buffer
   float buf1 = texture2D(u_buffer1, st).r;
-  vec3 dispColor = vec3(0, 0, 1);
+  vec3 dispColor = vec3(0, 0, 0);
-  dispColor.rgb = vec3(depthToSilhouette(texture2D(u_depth, st).r));
+  vec4 pointCloudColor = texture2D(u_ofcam, st); 
 
   float maxVal = buf1;
   float minVal = buf1;
@@ -101,6 +103,8 @@ void main() {
 
   // dispColor.rgb = vec3(depthToSilhouette(texture2D(u_depth, st/u_resolution).r));
   gl_FragColor = vec4(dispColor, 1.0);
+  gl_FragColor += pointCloudColor; // not good
+
 #endif
 
 }

zoneb/src/ofApp.cpp

@@ -40,6 +40,9 @@ void ofApp::setup()
 
   boundShader.allocate(ofGetWidth(), ofGetHeight());
   boundShader.load("shaders/bound.frag");
+
+  fbos.insert({"ofcam", ofFbo()});
+  fbos.at("ofcam").allocate(ofGetWidth(), ofGetHeight(), GL_RGB32F_ARB);
 }
 
 //--------------------------------------------------------------
@@ -60,17 +63,8 @@ void ofApp::draw()
 
   if (kinectDevice.isStreaming())
   {
-    ofDisableDepthTest();
+    fbos.at("ofcam").begin();
-    auto tex = kinectDevice.getDepthTex();
+    ofClear(0);
-    boundShader.setUniformTexture("u_depth", tex);
-    boundShader.setUniform1i("u_init", 1);
-    boundShader.render();
-    boundShader.setUniform1i("u_init", 0);
-    for (int i = 0; i < 60; i++) {
-      boundShader.render();
-    }
-    boundShader.draw(0, 0);
-
     cam.begin();
     ofEnableDepthTest();
 
@@ -107,6 +101,19 @@ void ofApp::draw()
     shader.end();
     ofPopMatrix();
     cam.end();
+    fbos.at("ofcam").end();
+
+    ofDisableDepthTest();
+    auto tex = kinectDevice.getDepthTex();
+    boundShader.setUniformTexture("u_depth", tex);
+    boundShader.setUniformTexture("u_ofcam", fbos.at("ofcam"));
+    boundShader.setUniform1i("u_init", 1);
+    boundShader.render();
+    boundShader.setUniform1i("u_init", 0);
+    for (int i = 0; i < 60; i++) {
+      boundShader.render();
+    }
+    boundShader.draw(0, 0);
   }
 
   ofDrawBitmapStringHighlight(ofToString(ofGetFrameRate(), 2) + " FPS", 10, 20);

zoneb/src/ofApp.h

@@ -34,6 +34,8 @@ private:
 	ofxShader shader;
 	ofxShaderFilter boundShader;
 
+	std::map<string, ofFbo> fbos;
+
 	float pointSize;
 	bool useColorSpace;
 };