> I completed osgAndroid Example with GLES1 successfully. If I try to run > the same example with OpenGLES2 then the OSG model is not rendering. If I > add the following code then I am able to see the model on my device. >
This is normal. > 1) Why should I add the shaders in OpenGLES2 to display model.Can't I > display the model with out this Shaders code. OpenGLES1 example doesn’t > have this shaders. > No. OpenGL ES2 is not like regular OpenGL. ES2 does NOT have the fixed functionality available that ES1 has. You can have shaders OR fixed function, but not both. > 2) If I add the shaders then the fixed functionalities like textures, > lighting etc. were disabled. But I need to enable them because I got model > from 3DS MAX. How can I enable fixed functionalities? > You can not. You need to write shaders that provide that same functionality. > Can you please guide me how to enable fixed functionalities? If shaders > are necessary to render model on Android with OpenGLES2 then how can I > handle textures (or any others fixed functionalities) ? Is there any > tutorial to handle this in Android? > One way to do this is to use a shader generator to create a shader to implement some of the fixed function capability in a shader. OSG has a ShaderGen tool, but it's somewhat out of date with regard to OpenGL ES2. We've been using an updated version of it, but it's not in core OSG yet. -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android @alphapixel <https://twitter.com/alphapixel> facebook.com/alphapixel
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