oivShaderState.h File Reference

This file contains fonction to acces built-in GLSL uniforms. More...

Go to the source code of this file.

Macros
#define	OIV_PROJECTION_TYPE_ORTHO   0
#define	OIV_PROJECTION_TYPE_PERSPECTIVE   1
#define	OIV_LIGHT_TYPE_NONE   0
#define	OIV_LIGHT_TYPE_POINT   1
#define	OIV_LIGHT_TYPE_SPOT   2
#define	OIV_LIGHT_TYPE_DIRECTIONAL   3

Functions
int	OivMaxLights ()
	Get the maximum number of lights sets by Open Inventor.
int	OivMaxClipPlanes ()
	Get the maximum number of clipping planes sets by Open Inventor.
int	OivMaxTextureCoordinates ()
	Get the maximum number of texture coordinates sets by Open Inventor.
int	OivMaxTextureUnits ()
	Get the maximum number of texture units sets by Open Inventor.
mat4	OivModelMatrix ()
	Get transformation of the model (M).
mat4	OivModelMatrixInverse ()
	Get inverse transformation of the model (M^{-1}).
mat4	OivViewMatrix ()
	Get transformation of the view (V).
mat4	OivViewMatrixInverse ()
	Get inverse transformation of the view (V^{-1}).
mat4	OivModelViewMatrix ()
	Get the combination of model and view transformations (MV), i.e., MV = V * M.
mat4	OivModelViewMatrixInverse ()
	Get the inverse of the model-view matrix,.
mat3	OivNormalMatrix ()
	Get the normal matrix (N), i.e., N = tr(MV^{-1}).
mat4	OivProjectionMatrix ()
	Get the projection matrix (P).
mat4	OivProjectionMatrixInverse ()
	Get the inverse of the projection matrix (P^{-1}).
mat4	OivModelViewProjectionMatrix ()
	Get the combination of projection and model-view matrices (MVP), i.e., MVP = P * V * M.
mat4	OivTextureMatrix (int unit)
	Get texture matrices.
vec2	OivViewportSize ()
	Get the size of the viewport.
vec2	OivViewVolumeSize ()
	Get the near/far view volume of the camera.
int	OivViewProjectionType ()
	Get the projection type of the camera (OIV_PROJECTION_TYPE_ORTHO or OIV_PROJECTION_TYPE_PERSPECTIVE)
bool	OivHasLighting ()
	Ask if lighting is enabled.
bool	OivHasTwoSidedLighting ()
	Ask if two-sided lighting is enabled.
bool	OivHasPerPixelLighting ()
	Ask if per-pixel lighting is enabled.
bool	OivHasColorMaterial ()
	Ask if color material is enabled.
vec4	OivGlobalAmbient ()
	Gets the global ambient color value.
bool	OivLightSourceEnabled (int id)
	Ask if the light is enabled.
int	OivLightSourceType (int id)
	Get the type of the light.
vec4	OivLightSourcePosition (int id)
	Get the light position.
vec3	OivLightSourceSpotDirection (int id)
	Get the light spot direction.
float	OivLightSourceSpotExponent (int id)
	Get the light spot exponent.
float	OivLightSourceSpotCutoff (int id)
	Get the light spot cutoff.
float	OivLightSourceSpotCosCutoff (int id)
	Get the light spot cutoff cosine.
vec4	OivLightSourceAmbient (int id)
	Get the light ambient color.
vec4	OivLightSourceDiffuse (int id)
	Get the light diffuse color.
vec4	OivLightSourceSpecular (int id)
	Get the light specular color.
float	OivLightSourceConstantAttenuation (int id)
	Get the light constant attenuation value.
float	OivLightSourceLinearAttenuation (int id)
	Get the light linear attenuation value.
float	OivLightSourceQuadraticAttenuation (int id)
	Get the light quadratic attenuation value.
int	OivMaxLightId ()
vec4	OivFrontMaterialAmbient ()
	Get front material ambient color.
vec4	OivFrontMaterialDiffuse ()
	Get front material diffuse color.
vec4	OivFrontMaterialSpecular ()
	Get front material specular color.
vec4	OivFrontMaterialEmissive ()
	Get front material emissive color.
float	OivFrontMaterialShininess ()
	Get front material shininess value.
vec4	OivBackMaterialAmbient ()
	Get back material ambient color.
vec4	OivBackMaterialDiffuse ()
	Get back material diffuse color.
vec4	OivBackMaterialSpecular ()
	Get back material specular color.
vec4	OivBackMaterialEmissive ()
	Get back material emissive color.
float	OivBackMaterialShininess ()
	Get back material shininess value.
vec4	OivFrontSceneColor ()
	Get sum of emissive component of front material and product between front material ambient and global ambient value.
vec4	OivFrontLightProductAmbient (int id)
	Get product of ambient component between back material and id'th light.
vec4	OivFrontLightProductDiffuse (int id)
	Get product of diffuse component between back material and id'th light.
vec4	OivFrontLightProductSpecular (int id)
	Get product of specular component between back material and id'th light.
vec4	OivBackLightProductAmbient (int id)
	Get product of ambient component between back material and id'th light.
vec4	OivBackLightProductDiffuse (int id)
	Get product of diffuse component between back material and id'th light.
vec4	OivBackLightProductSpecular (int id)
	Get product of specular component between back material and id'th light.
bool	OivClipPlaneEnabled (int id)
	Ask if clip plane is enabled.
vec4	OivClipPlane (int id)
	Get the clip plane coordinates.
vec4	OivFogColor ()
	Get the fog color.
float	OivFogDensity ()
	Get fog density used in exponential fog equations.
float	OivFogStart ()
	Get the near distance used in the linear fog equation.
float	OivFogEnd ()
	Get the far distance used in the linear fog equation.
float	OivFogScale ()
	Get the fog scale derived from start and end parameters : 1.0 / (end - start)
int	OivFogType ()
	Get the fog type.
vec4	OivObjectPlaneS (int i)
	Get the user-defined planes for texture coordinate generation.
vec4	OivObjectPlaneT (int i)
	Get the user-defined planes for texture coordinate generation.
vec4	OivObjectPlaneR (int i)
	Get the user-defined planes for texture coordinate generation.
vec4	OivObjectPlaneQ (int i)
	Get the user-defined planes for texture coordinate generation.

Detailed Description

This file contains fonction to acces built-in GLSL uniforms.

Definition in file oivShaderState.h.

Macro Definition Documentation

OIV_LIGHT_TYPE_DIRECTIONAL

#define OIV_LIGHT_TYPE_DIRECTIONAL   3

Definition at line 171 of file oivShaderState.h.

OIV_LIGHT_TYPE_NONE

#define OIV_LIGHT_TYPE_NONE   0

Definition at line 168 of file oivShaderState.h.

OIV_LIGHT_TYPE_POINT

#define OIV_LIGHT_TYPE_POINT   1

Definition at line 169 of file oivShaderState.h.

OIV_LIGHT_TYPE_SPOT

#define OIV_LIGHT_TYPE_SPOT   2

Definition at line 170 of file oivShaderState.h.

OIV_PROJECTION_TYPE_ORTHO

#define OIV_PROJECTION_TYPE_ORTHO   0

Definition at line 118 of file oivShaderState.h.

OIV_PROJECTION_TYPE_PERSPECTIVE

#define OIV_PROJECTION_TYPE_PERSPECTIVE   1

Definition at line 119 of file oivShaderState.h.

Function Documentation

OivBackLightProductAmbient()

vec4 OivBackLightProductAmbient

(

int

id

)

Get product of ambient component between back material and id'th light.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

product of ambient component between back material and id'th light.

Note that this parameter is relevant only if two side lighting is enabled (i.e. OivHasTwoSidedLighting() returns true).

OivBackLightProductDiffuse()

vec4 OivBackLightProductDiffuse

(

int

id

)

Get product of diffuse component between back material and id'th light.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

product of diffuse component between back material and id'th light.

Note that this parameter is relevant only if two side lighting is enabled (i.e. OivHasTwoSidedLighting() returns true).

OivBackLightProductSpecular()

vec4 OivBackLightProductSpecular

(

int

id

)

Get product of specular component between back material and id'th light.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

product of specular component between back material and id'th light.

Note that this parameter is relevant only if two side lighting is enabled (i.e. OivHasTwoSidedLighting() returns true).

OivBackMaterialAmbient()

vec4 OivBackMaterialAmbient

(

)

Get back material ambient color.

Returns

ambient color for back material.

Note that this parameter is relevant only if two side lighting is enabled (i.e. OivHasTwoSidedLighting() returns true).

OivBackMaterialDiffuse()

vec4 OivBackMaterialDiffuse

(

)

Get back material diffuse color.

Returns

diffuse color for back material.

Note that this parameter is relevant only if two side lighting is enabled (i.e. OivHasTwoSidedLighting() returns true).

OivBackMaterialEmissive()

vec4 OivBackMaterialEmissive

(

)

Get back material emissive color.

Returns

emissive color for back material.

Note that this parameter is relevant only if two side lighting is enabled (i.e. OivHasTwoSidedLighting() returns true).

OivBackMaterialShininess()

float OivBackMaterialShininess

(

)

Get back material shininess value.

Returns

shininess value for back material.

Note that this parameter is relevant only if two side lighting is enabled (i.e. OivHasTwoSidedLighting() returns true).

OivBackMaterialSpecular()

vec4 OivBackMaterialSpecular

(

)

Get back material specular color.

Returns

specular color for back material.

Note that this parameter is relevant only if two side lighting is enabled (i.e. OivHasTwoSidedLighting() returns true).

OivClipPlane()

vec4 OivClipPlane

(

int

id

)

Get the clip plane coordinates.

Parameters

id	specifies which clip plane id to ask, must be between 0 and OivMaxClipPlanes()-1.

Returns

the clip plane .

OivClipPlaneEnabled()

bool OivClipPlaneEnabled

(

int

id

)

Ask if clip plane is enabled.

Parameters

id	specifies which clip plane id to ask, must be between 0 and OivMaxClipPlanes()-1.

Returns

true if clip plane with a given id is enabled, false otherwise.

OivFogColor()

vec4 OivFogColor

(

)

Get the fog color.

Returns

fog color.

OivFogDensity()

float OivFogDensity

(

)

Get fog density used in exponential fog equations.

Returns

fog density.

OivFogEnd()

float OivFogEnd

(

)

Get the far distance used in the linear fog equation.

Returns

fog end.

OivFogScale()

float OivFogScale

(

)

Get the fog scale derived from start and end parameters : 1.0 / (end - start)

Returns

fog scale.

OivFogStart()

float OivFogStart

(

)

Get the near distance used in the linear fog equation.

Returns

fog start.

OivFogType()

int OivFogType

(

)

Get the fog type.

Returns

fog type (FOG_TYPE_NONE, FOG_TYPE_EXP, FOG_TYPE_EXP2 or FOG_TYPE_LINEAR).

OivFrontLightProductAmbient()

vec4 OivFrontLightProductAmbient

(

int

id

)

Get product of ambient component between back material and id'th light.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

product of ambient component between back material and id'th light.

OivFrontLightProductDiffuse()

vec4 OivFrontLightProductDiffuse

(

int

id

)

Get product of diffuse component between back material and id'th light.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

product of diffuse component between back material and id'th light.

OivFrontLightProductSpecular()

vec4 OivFrontLightProductSpecular

(

int

id

)

Get product of specular component between back material and id'th light.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

product of specular component between back material and id'th light.

OivFrontMaterialAmbient()

vec4 OivFrontMaterialAmbient

(

)

Get front material ambient color.

Returns

ambient color for front material.

OivFrontMaterialDiffuse()

vec4 OivFrontMaterialDiffuse

(

)

Get front material diffuse color.

Returns

diffuse color for front material.

OivFrontMaterialEmissive()

vec4 OivFrontMaterialEmissive

(

)

Get front material emissive color.

Returns

emissive color for front material.

OivFrontMaterialShininess()

float OivFrontMaterialShininess

(

)

Get front material shininess value.

Returns

shininess value for front material.

OivFrontMaterialSpecular()

vec4 OivFrontMaterialSpecular

(

)

Get front material specular color.

Returns

specular color for front material.

OivFrontSceneColor()

vec4 OivFrontSceneColor

(

)

Get sum of emissive component of front material and product between front material ambient and global ambient value.

Returns

sum of emissive component of front material and product between front material ambient and global ambient value.

OivGlobalAmbient()

vec4 OivGlobalAmbient

(

)

Gets the global ambient color value.

Returns

The global ambient color value

OivHasColorMaterial()

bool OivHasColorMaterial

(

)

Ask if color material is enabled.

Returns

true if color material is active, false otherwise

OivHasLighting()

bool OivHasLighting

(

)

Ask if lighting is enabled.

Returns

true if lighting is enabled, false otherwise.

OivHasPerPixelLighting()

bool OivHasPerPixelLighting

(

)

Ask if per-pixel lighting is enabled.

Returns

true if per-pixel lighting is enabled, false otherwise

OivHasTwoSidedLighting()

bool OivHasTwoSidedLighting

(

)

Ask if two-sided lighting is enabled.

Returns

true if two-sided lighting is enabled, false otherwise

OivLightSourceAmbient()

vec4 OivLightSourceAmbient

(

int

id

)

Get the light ambient color.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

the light ambient color for a given light id.

Note that this parameter is relevant only if lighting is enabled (i.e. OivHasLighting() returns true).

OivLightSourceConstantAttenuation()

float OivLightSourceConstantAttenuation

(

int

id

)

Get the light constant attenuation value.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

the light constant attenuation value for a given light id.

Note that this parameter is relevant only if lighting is enabled (i.e. OivHasLighting() returns true).

OivLightSourceDiffuse()

vec4 OivLightSourceDiffuse

(

int

id

)

Get the light diffuse color.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

the light diffuse color for a given light id.

Note that this parameter is relevant only if lighting is enabled (i.e. OivHasLighting() returns true).

OivLightSourceEnabled()

bool OivLightSourceEnabled

(

int

id

)

Ask if the light is enabled.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

true if light with a given id is enabled, false otherwise.

Note that this parameter is relevant only if lighting is enabled (i.e. OivHasLighting() returns true).

OivLightSourceLinearAttenuation()

float OivLightSourceLinearAttenuation

(

int

id

)

Get the light linear attenuation value.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

the light linear attenuation value for a given light id.

Note that this parameter is relevant only if lighting is enabled (i.e. OivHasLighting() returns true).

OivLightSourcePosition()

vec4 OivLightSourcePosition

(

int

id

)

Get the light position.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

the light position for a given light id.

Note that this parameter is relevant only if lighting is enabled (i.e. OivHasLighting() returns true).

OivLightSourceQuadraticAttenuation()

float OivLightSourceQuadraticAttenuation

(

int

id

)

Get the light quadratic attenuation value.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

the light quadratic attenuation value for a given light id.

Note that this parameter is relevant only if lighting is enabled (i.e. OivHasLighting() returns true).

OivLightSourceSpecular()

vec4 OivLightSourceSpecular

(

int

id

)

Get the light specular color.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

the light specular color for a given light id.

Note that this parameter is relevant only if lighting is enabled (i.e. OivHasLighting() returns true).

OivLightSourceSpotCosCutoff()

float OivLightSourceSpotCosCutoff

(

int

id

)

Get the light spot cutoff cosine.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

the light spot cutoff cosine for a given light id.

Note that this parameter is relevant only if lighting is enabled (i.e. OivHasLighting() returns true).

OivLightSourceSpotCutoff()

float OivLightSourceSpotCutoff

(

int

id

)

Get the light spot cutoff.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

the light spot cutoff for a given light id.

Note that this parameter is relevant only if lighting is enabled (i.e. OivHasLighting() returns true).

OivLightSourceSpotDirection()

vec3 OivLightSourceSpotDirection

(

int

id

)

Get the light spot direction.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

the light spot direction for a given light id.

Note that this parameter is relevant only if lighting is enabled (i.e. OivHasLighting() returns true).

OivLightSourceSpotExponent()

float OivLightSourceSpotExponent

(

int

id

)

Get the light spot exponent.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

the light spot exponent for a given light id.

Note that this parameter is relevant only if lighting is enabled (i.e. OivHasLighting() returns true).

OivLightSourceType()

int OivLightSourceType

(

int

id

)

Get the type of the light.

Parameters

id	specifies which light id to ask, must be between 0 and OivMaxLights()-1.

Returns

the type of the light (OIV_LIGHT_TYPE_NONE, OIV_LIGHT_TYPE_POINT, OIV_LIGHT_TYPE_SPOT or OIV_LIGHT_TYPE_DIRECTIONAL).

OivMaxClipPlanes()

int OivMaxClipPlanes

(

)

Get the maximum number of clipping planes sets by Open Inventor.

OivMaxLightId()

int OivMaxLightId

(

)

OivMaxLights()

int OivMaxLights

(

)

Get the maximum number of lights sets by Open Inventor.

OivMaxTextureCoordinates()

int OivMaxTextureCoordinates

(

)

Get the maximum number of texture coordinates sets by Open Inventor.

OivMaxTextureUnits()

int OivMaxTextureUnits

(

)

Get the maximum number of texture units sets by Open Inventor.

OivModelMatrix()

mat4 OivModelMatrix

(

)

Get transformation of the model (M).

Returns

the model matrix.

OivModelMatrixInverse()

mat4 OivModelMatrixInverse

(

)

Get inverse transformation of the model (M^{-1}).

Returns

the inverse of the model matrix.

OivModelViewMatrix()

mat4 OivModelViewMatrix

(

)

Get the combination of model and view transformations (MV), i.e., MV = V * M.

Returns

the model-view matrix.

OivModelViewMatrixInverse()

mat4 OivModelViewMatrixInverse

(

)

Get the inverse of the model-view matrix,.

Returns

the inverse of the model-view matrix.

OivModelViewProjectionMatrix()

mat4 OivModelViewProjectionMatrix

(

)

Get the combination of projection and model-view matrices (MVP), i.e., MVP = P * V * M.

Returns

the model-view-projection matrix

OivNormalMatrix()

mat3 OivNormalMatrix

(

)

Get the normal matrix (N), i.e., N = tr(MV^{-1}).

Returns

the normal matrix.

OivObjectPlaneQ()

vec4 OivObjectPlaneQ

(

int

i

)

Get the user-defined planes for texture coordinate generation.

Returns

user-defined plane

OivObjectPlaneR()

vec4 OivObjectPlaneR

(

int

i

)

Get the user-defined planes for texture coordinate generation.

Returns

user-defined plane

OivObjectPlaneS()

vec4 OivObjectPlaneS

(

int

i

)

Get the user-defined planes for texture coordinate generation.

Returns

user-defined plane

OivObjectPlaneT()

vec4 OivObjectPlaneT

(

int

i

)

Get the user-defined planes for texture coordinate generation.

Returns

user-defined plane

OivProjectionMatrix()

mat4 OivProjectionMatrix

(

)

Get the projection matrix (P).

Returns

the projection matrix.

OivProjectionMatrixInverse()

mat4 OivProjectionMatrixInverse

(

)

Get the inverse of the projection matrix (P^{-1}).

Returns

the inverse projection matrix.

OivTextureMatrix()

mat4 OivTextureMatrix

(

int

unit

)

Get texture matrices.

Parameters

unit	specifies which texture unit between 0 and OivMaxTextureUnit()-1.

Returns

the texture matrix for a given unit.

OivViewMatrix()

mat4 OivViewMatrix

(

)

Get transformation of the view (V).

Returns

the view matrix.

OivViewMatrixInverse()

mat4 OivViewMatrixInverse

(

)

Get inverse transformation of the view (V^{-1}).

Returns

the inverse of the view matrix.

OivViewportSize()

vec2 OivViewportSize

(

)

Get the size of the viewport.

Returns

width and height of the viewport packed in vec2.

OivViewProjectionType()

int OivViewProjectionType

(

)

Get the projection type of the camera (OIV_PROJECTION_TYPE_ORTHO or OIV_PROJECTION_TYPE_PERSPECTIVE)

OivViewVolumeSize()

vec2 OivViewVolumeSize

(

)

Get the near/far view volume of the camera.