Inventor/oivShaderState.h

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#ifndef OIV_SHADER_STATE_H
#define OIV_SHADER_STATE_H


/*****************************************************************************/
// Constants

int OivMaxLights()
{
  return gl_MaxLights;
}

int OivMaxClipPlanes()
{
  return gl_MaxClipPlanes;
}

int OivMaxTextureCoordinates()
{
  return gl_MaxTextureCoords;
}

int OivMaxTextureUnits()
{
  return gl_MaxTextureUnits;
}

/*****************************************************************************/
// Transforms

mat4 OivModelViewMatrix()
{
  return gl_ModelViewMatrix;
}

mat4 OivModelViewMatrixInverse()
{
  return gl_ModelViewMatrixInverse;
}

mat3 OivNormalMatrix()
{
  return gl_NormalMatrix;
}

mat4 OivProjectionMatrix()
{
  return gl_ProjectionMatrix;
}

mat4 OivProjectionMatrixInverse()
{
  return gl_ProjectionMatrixInverse;
}

mat4 OivModelViewProjectionMatrix()
{
  return gl_ModelViewProjectionMatrix;
}

mat4 OivTextureMatrix(int unit)
{
  return gl_TextureMatrix[unit];
}

/*****************************************************************************/
// Lighting

vec4 OivGlobalAmbient()
{
  return gl_LightModel.ambient;
}

bool OivLightSourceEnabled(int id)
{
  return bool(gl_LightSource[id].ambient != vec4(0.0)) || bool(gl_LightSource[id].diffuse != vec4(0.0)) || bool(gl_LightSource[id].specular != vec4(0.0));
}

vec4 OivLightSourcePosition(int id)
{
  return gl_LightSource[id].position;
}

vec3 OivLightSourceSpotDirection(int id)
{
  return gl_LightSource[id].spotDirection;
}

float OivLightSourceSpotExponent(int id)
{
  return gl_LightSource[id].spotExponent;
}

float OivLightSourceSpotCutoff(int id)
{
  return gl_LightSource[id].spotCutoff;
}

float OivLightSourceSpotCosCutoff(int id)
{
  return gl_LightSource[id].spotCosCutoff;
}

vec4 OivLightSourceAmbient(int id)
{
  return gl_LightSource[id].ambient;
}

vec4 OivLightSourceDiffuse(int id)
{
  return gl_LightSource[id].diffuse;
}

vec4 OivLightSourceSpecular(int id)
{
  return gl_LightSource[id].specular;
}

float OivLightSourceConstantAttenuation(int id)
{
  return gl_LightSource[id].constantAttenuation;
}

float OivLightSourceLinearAttenuation(int id)
{
  return gl_LightSource[id].linearAttenuation;
}

float OivLightSourceQuadraticAttenuation(int id)
{
  return gl_LightSource[id].quadraticAttenuation;
}

/*****************************************************************************/
// Material

vec4 OivFrontMaterialAmbient()
{
  return gl_FrontMaterial.ambient;
}

vec4 OivFrontMaterialDiffuse()
{
  return gl_FrontMaterial.diffuse;
}

vec4 OivFrontMaterialSpecular()
{
  return gl_FrontMaterial.specular;
}

vec4 OivFrontMaterialEmissive()
{
  return gl_FrontMaterial.emission;
}

float OivFrontMaterialShininess()
{
  return gl_FrontMaterial.shininess;
}

vec4 OivBackMaterialAmbient()
{
  return gl_BackMaterial.ambient;
}

vec4 OivBackMaterialDiffuse()
{
  return gl_BackMaterial.diffuse;
}

vec4 OivBackMaterialSpecular()
{
  return gl_BackMaterial.specular;
}

vec4 OivBackMaterialEmissive()
{
  return gl_BackMaterial.emission;
}

float OivBackMaterialShininess()
{
  return gl_BackMaterial.shininess;
}

vec4 OivFrontSceneColor()
{
  return gl_FrontLightModelProduct.sceneColor;
}

vec4 OivFrontLightProductAmbient(int id)
{
  return gl_FrontLightProduct[id].ambient;
}

vec4 OivFrontLightProductDiffuse(int id)
{
  return gl_FrontLightProduct[id].diffuse;
}

vec4 OivFrontLightProductSpecular(int id)
{
  return gl_FrontLightProduct[id].specular;
}

vec4 OivBackLightProductAmbient(int id)
{
  return gl_BackLightProduct[id].ambient;
}

vec4 OivBackLightProductDiffuse(int id)
{
  return gl_BackLightProduct[id].diffuse;
}

vec4 OivBackLightProductSpecular(int id)
{
  return gl_BackLightProduct[id].specular;
}

/*****************************************************************************/
// Clip planes

vec4 OivClipPlane(int id)
{
  return gl_ClipPlane[id];
}

bool OivClipPlaneEnabled(int id)
{
  return (OivClipPlane(id) != vec4(0.0));
}

/*****************************************************************************/
// Fog parameters

vec4 OivFogColor()
{
  return gl_Fog.color;
}


float OivFogDensity()
{
  return gl_Fog.density;
}


float OivFogStart()
{
  return gl_Fog.start;
}


float OivFogEnd()
{
  return gl_Fog.end;
}


float OivFogScale()
{
  return gl_Fog.scale;
}

vec4 OivObjectPlaneS(int i)
{
  return gl_ObjectPlaneS[i];
}

vec4 OivObjectPlaneT(int i)
{
  return gl_ObjectPlaneT[i];
}

vec4 OivObjectPlaneR(int i)
{
  return gl_ObjectPlaneR[i];
}

vec4 OivObjectPlaneQ(int i)
{
  return gl_ObjectPlaneQ[i];
}

#endif /* OIV_SHADER_STATE_H */

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Open Inventor Toolkit reference manual, generated on 12 Feb 2024
Copyright © Thermo Fisher Scientific All rights reserved. http://www.openinventor.com/