extra

The extra element may appear any number of times. OpenGL ES extensions may be used here.

Element Information

Model

asset{0,1} , technique+

Children: asset, technique

Attributes

QName

Type

Fixed

Default

Use

Inheritable

Annotation

xs:ID

optional

The id attribute is a text string containing the unique identifier of this element. This value 
must be unique within the instance document. Optional attribute.

name

xs:token

optional

The name attribute is the text string name of this element. Optional attribute.

type

xs:NMTOKEN

optional

The type attribute indicates the type of the value data. This text string must be understood by 
the application. Optional attribute.

Source

<xs:element name="extra" type="extra_type" minOccurs="0" maxOccurs="unbounded">
  <xs:annotation>
    <xs:documentation>The extra element may appear any number of times. OpenGL ES extensions may be used here.</xs:documentation>
  </xs:annotation>
</xs:element>

Sample

< effect xmlns = "http://www.collada.org/2008/03/COLLADASchema" id = "Textured_Bump_E0_MP_FX" >

[...]

< profile_GLSL>

< code sid = "Vertex_Program_E0_P0_VP" >

uniform vec3 fvLightPosition; uniform vec3 fvEyePosition; varying vec2 Texcoord; varying vec3 ViewDirection; varying vec3 LightDirection; attribute vec3 rm_Binormal; attribute vec3 rm_Tangent; void main( void ) { gl_Position = ftransform(); Texcoord = gl_MultiTexCoord0.xy; vec4 fvObjectPosition = gl_ModelViewMatrix * gl_Vertex; vec3 fvViewDirection = fvEyePosition - fvObjectPosition.xyz; vec3 fvLightDirection = fvLightPosition - fvObjectPosition.xyz; vec3 fvNormal = gl_NormalMatrix * gl_Normal; vec3 fvBinormal = gl_NormalMatrix * rm_Binormal; vec3 fvTangent = gl_NormalMatrix * rm_Tangent; ViewDirection.x = dot( fvTangent, fvViewDirection ); ViewDirection.y = dot( fvBinormal, fvViewDirection ); ViewDirection.z = dot( fvNormal, fvViewDirection ); LightDirection.x = dot( fvTangent, fvLightDirection.xyz ); LightDirection.y = dot( fvBinormal, fvLightDirection.xyz ); LightDirection.z = dot( fvNormal, fvLightDirection.xyz ); }

</ code>

< code sid = "Fragment_Program_E0_P0_FP" >

uniform vec4 fvAmbient; uniform vec4 fvSpecular; uniform vec4 fvDiffuse; uniform float fSpecularPower; uniform sampler2D baseMap; uniform sampler2D bumpMap; varying vec2 Texcoord; varying vec3 ViewDirection; varying vec3 LightDirection; void main( void ) { vec3 fvLightDirection = normalize( LightDirection ); vec3 fvNormal = normalize( ( texture2D( bumpMap, Texcoord ).xyz * 2.0 ) - 1.0 ); float fNDotL = dot( fvNormal, fvLightDirection ); vec3 fvReflection = normalize( ( ( 2.0 * fvNormal ) * fNDotL ) - fvLightDirection ); vec3 fvViewDirection = normalize( ViewDirection ); float fRDotV = max( 0.0, dot( fvReflection, fvViewDirection ) ); vec4 fvBaseColor = texture2D( baseMap, Texcoord ); vec4 fvTotalAmbient = fvAmbient * fvBaseColor; vec4 fvTotalDiffuse = fvDiffuse * fNDotL * fvBaseColor; vec4 fvTotalSpecular = fvSpecular * ( pow( fRDotV, fSpecularPower ) ); gl_FragColor = ( fvTotalAmbient + fvTotalDiffuse + fvTotalSpecular ); }

</ code>

< newparam sid = "fSpecularPower_E0_P0" >

< float>

</ float>

</ newparam>

< newparam sid = "fvAmbient_E0_P0" >

< float4>

0.368627 0.368421 0.368421 1

</ float4>

</ newparam>

< newparam sid = "fvDiffuse_E0_P0" >

< float4>