Anastasios Chondrogiannis

In order to apply specular lighting you will need 4 additional pieces of information:

1. The fragment position.
2. The camera position.
3. The specular intensity of the pyramid material.
4. The shininess of the pyramid material.

1. Add the fragment position

1.1. Modify the vertex shader

• Open the main.cpp file.
• Modify the fragment shader source code as follows:

[Read more…] about Android OpenGL ES – Part 10: Specular lighting

1. Modify the directional light

1.1. Modify the fragment shader

• Open the main.cpp file.
• Modify the fragment shader source code as follows:

[Read more…] about Android OpenGL ES – Part 9: Diffuse lighting

1. Add a directional light

1.1. Modify the fragment shader

• Open the main.cpp file.
• Modify the fragment shader source code as follows:

[Read more…] about Android OpenGL ES – Part 8: Ambient Lighting

1. Add the texture image file

• Download this image.
• Open the Project pane from the left side of the IDE.
• Select the Project view.
• Navigate to app->src->main.
• Right click the main folder and select New->Directory.
• Name it assets and click OK.
• Drag and drop the image to the newly created assets directory and click OK.
• Return to the Android view.

[Read more…] about Android OpenGL ES – Part 7: Textures

1. Reset the pyramid position

• Open the main.cpp file.
• Modify the Java_dev_anastasioscho_glestriangle_NativeLibrary_nOnDrawFrame function as follows:

[Read more…] about Android OpenGL ES – Part 6: Camera View

1. Create the transformation matrix

• Open the main.cpp file.
• Declare the following global variable:

[Read more…] about Android OpenGL ES – Part 5: Perspective Projection