Ogre::ShadowVolumeExtrudeProgram class Reference

// Point light shadow volume extrude void shadowVolumeExtrudePointLight_vp ( float4 position : POSITION, float wcoord : TEXCOORD0, out float4 oPosition : POSITION, uniform float4x4 worldViewProjMatrix, uniform float4 lightPos // homogenous, object space ) { // extrusion in object space // vertex unmodified if w==1, extruded if w==0 float4 newpos = (wcoord.xxxx * lightPos) + float4(position.xyz - lightPos.xyz, 0); oPosition = mul(worldViewProjMatrix, newpos); } // Directional light extrude void shadowVolumeExtrudeDirLight_vp ( float4 position : POSITION, float wcoord : TEXCOORD0, out float4 oPosition : POSITION, uniform float4x4 worldViewProjMatrix, uniform float4 lightPos // homogenous, object space ) { // extrusion in object space // vertex unmodified if w==1, extruded if w==0 float4 newpos = (wcoord.xxxx * (position + lightPos)) - lightPos; oPosition = mul(worldViewProjMatrix, newpos); } // Point light shadow volume extrude - FINITE void shadowVolumeExtrudePointLightFinite_vp ( float4 position : POSITION, float wcoord : TEXCOORD0, out float4 oPosition : POSITION, uniform float4x4 worldViewProjMatrix, uniform float4 lightPos, // homogenous, object space uniform float extrusionDistance // how far to extrude ) { // extrusion in object space // vertex unmodified if w==1, extruded if w==0 float3 extrusionDir = position.xyz - lightPos.xyz; extrusionDir = normalize(extrusionDir); float4 newpos = float4(position.xyz + ((1 - wcoord.x) * extrusionDistance * extrusionDir), 1); oPosition = mul(worldViewProjMatrix, newpos); } // Directional light extrude - FINITE void shadowVolumeExtrudeDirLightFinite_vp ( float4 position : POSITION, float wcoord : TEXCOORD0, out float4 oPosition : POSITION, uniform float4x4 worldViewProjMatrix, uniform float4 lightPos, // homogenous, object space uniform float extrusionDistance // how far to extrude ) { // extrusion in object space // vertex unmodified if w==1, extruded if w==0 // -ve lightPos is direction float4 newpos = float4(position.xyz - (wcoord.x * extrusionDistance * lightPos.xyz), 1); oPosition = mul(worldViewProjMatrix, newpos); }


Public Types
enum	Programs { POINT_LIGHT = 0, POINT_LIGHT_DEBUG = 1, DIRECTIONAL_LIGHT = 2, DIRECTIONAL_LIGHT_DEBUG = 3, POINT_LIGHT_FINITE = 4, POINT_LIGHT_FINITE_DEBUG = 5, DIRECTIONAL_LIGHT_FINITE = 6, DIRECTIONAL_LIGHT_FINITE_DEBUG = 7 }
Static Public Member Functions
void	initialise (void)
	Initialise the creation of these vertex programs.
void	shutdown (void)
	Shutdown & destroy the vertex programs.
const String &	getPointLightExtruderArbvp1 (void)
	Get extruder program source for point lights, compatible with arbvp1.
const String &	getPointLightExtruderVs_1_1 (void)
	Get extruder program source for point lights, compatible with vs_1_1.
const String &	getDirectionalLightExtruderArbvp1 (void)
	Get extruder program source for directional lights, compatible with arbvp1.
const String &	getDirectionalLightExtruderVs_1_1 (void)
	Get extruder program source for directional lights, compatible with vs_1_1.
const String &	getPointLightExtruderArbvp1Debug (void)
	Get extruder program source for debug point lights, compatible with arbvp1.
const String &	getPointLightExtruderVs_1_1Debug (void)
	Get extruder program source for debug point lights, compatible with vs_1_1.
const String &	getDirectionalLightExtruderArbvp1Debug (void)
	Get extruder program source for debug directional lights, compatible with arbvp1.
const String &	getDirectionalLightExtruderVs_1_1Debug (void)
	Get extruder program source for debug directional lights, compatible with vs_1_1.
const String &	getProgramSource (Light::LightTypes lightType, const String syntax, bool finite, bool debug)
	General purpose method to get any of the program sources.
const String &	getProgramName (Light::LightTypes lightType, bool finite, bool debug)
const String &	getPointLightExtruderArbvp1Finite (void)
	Get FINITE extruder program source for point lights, compatible with arbvp1.
const String &	getPointLightExtruderVs_1_1Finite (void)
	Get FINITE extruder program source for point lights, compatible with vs_1_1.
const String &	getDirectionalLightExtruderArbvp1Finite (void)
	Get FINITE extruder program source for directional lights, compatible with arbvp1.
const String &	getDirectionalLightExtruderVs_1_1Finite (void)
	Get FINITE extruder program source for directional lights, compatible with vs_1_1.
const String &	getPointLightExtruderArbvp1FiniteDebug (void)
	Get FINITE extruder program source for debug point lights, compatible with arbvp1.
const String &	getPointLightExtruderVs_1_1FiniteDebug (void)
	Get extruder program source for debug point lights, compatible with vs_1_1.
const String &	getDirectionalLightExtruderArbvp1FiniteDebug (void)
	Get FINITE extruder program source for debug directional lights, compatible with arbvp1.
const String &	getDirectionalLightExtruderVs_1_1FiniteDebug (void)
	Get FINITE extruder program source for debug directional lights, compatible with vs_1_1.
Static Public Attributes
const String	programNames [OGRE_NUM_SHADOW_EXTRUDER_PROGRAMS]
Static Private Attributes
String	mPointArbvp1
String	mPointVs_1_1
String	mDirArbvp1
String	mDirVs_1_1
String	mPointArbvp1Debug
String	mPointVs_1_1Debug
String	mDirArbvp1Debug
String	mDirVs_1_1Debug
String	mPointArbvp1Finite
String	mPointVs_1_1Finite
String	mDirArbvp1Finite
String	mDirVs_1_1Finite
String	mPointArbvp1FiniteDebug
String	mPointVs_1_1FiniteDebug
String	mDirArbvp1FiniteDebug
String	mDirVs_1_1FiniteDebug
bool	mInitialised

Ogre::ShadowVolumeExtrudeProgram Class Reference

Public Types

Static Public Member Functions

Static Public Attributes

Static Private Attributes

Detailed Description

Member Enumeration Documentation

Member Function Documentation

Member Data Documentation