Alpha masking without shaders for RPi

example/src/main.cpp

@@ -15,24 +15,8 @@ int main(int argc, char * argv[]){
 		}
 	}
 
-	shared_ptr<ofAppBaseWindow> window;
-#ifdef TARGET_OPENGLES
-	ofGLESWindowSettings esSettings;
-	esSettings.glesVersion = 2;
-	esSettings.width = 1440;
-	esSettings.height = 900;
-	window = ofCreateWindow(esSettings);
-#else
-	ofGLWindowSettings glSettings;
-	glSettings.glVersionMajor = 2;
-	glSettings.glVersionMinor = 1;
-	glSettings.width = 1440;
-	glSettings.height = 900;
-	window = ofCreateWindow(glSettings);
-#endif
-
-	auto app = std::make_shared<ofApp>();
 	Settings::instance()->setFullscreen(fullscreen);
-	ofRunApp(window, app);
-	ofRunMainLoop();
+
+	ofSetupOpenGL(1024, 768, OF_WINDOW);
+	ofRunApp(new ofApp());
 }

src/Surfaces/CircleSurface.cpp

@@ -183,6 +183,23 @@ void CircleSurface::draw() {
 		ofClear(0, 0, 0, 0);
 		ofSetupScreenOrtho(w, h, -1, 1);
 		ofEnableNormalizedTexCoords();
+		ofSetColor(255);
+		ofFill();
+		ofSetRectMode(OF_RECTMODE_CORNER);
+#ifdef TARGET_RASPBERRY_PI
+		scaledSourceFbo.getTexture().bind();
+		maskMesh.draw();
+		scaledSourceFbo.getTexture().unbind();
+
+		// Masking without shaders...
+		ofPushStyle();
+		ofEnableBlendMode(OF_BLENDMODE_MULTIPLY);
+		ofSetColor(255);
+		ofFill();
+		ofDisableNormalizedTexCoords();
+		maskFbo.draw(0, 0);
+		ofPopStyle();
+#else
 		maskShader.begin();
 		maskShader.setUniformTexture("maskTex", maskFbo.getTexture(), 1);
 		ofSetColor(255);
@@ -192,6 +209,8 @@ void CircleSurface::draw() {
 		maskMesh.draw();
 		scaledSourceFbo.getTexture().unbind();
 		maskShader.end();
+#endif
+
 	}
 	outputFbo.end();