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• PhongAlphaMaterial

PhongAlphaMaterial

The PhongAlphaMaterial class provides a default implementation of the phong lighting effect with alpha. More...

• List of all members, including inherited members

Properties

• alpha : real
• ambient : color
• blendFunctionArg : BlendEquation::BlendFunction
• destinationAlphaArg : BlendEquationArguments::Blending
• destinationRgbArg : BlendEquationArguments::Blending
• diffuse : color
• shininess : real
• sourceAlphaArg : BlendEquationArguments::Blending
• sourceRgbArg : BlendEquationArguments::Blending
• specular : color

Detailed Description

The phong lighting effect is based on the combination of 3 lighting components ambient, diffuse and specular. The relative strengths of these components are controlled by means of their reflectivity coefficients which are modelled as RGB triplets:

• Ambient is the color that is emitted by an object without any other light source.
• Diffuse is the color that is emitted for rought surface reflections with the lights.
• Specular is the color emitted for shiny surface reflections with the lights.
• The shininess of a surface is controlled by a float property.
• Alpha is the transparency of the surface between 0 (fully transparent) and 1 (opaque).

This material uses an effect with a single render pass approach and performs per fragment lighting. Techniques are provided for OpenGL 2, OpenGL 3 or above as well as OpenGL ES 2.

Property Documentation