Inventor/oivShaderVariables.h

Go to the documentation of this file.

#ifndef OIV_SHADER_VARIABLES_H
#define OIV_SHADER_VARIABLES_H


/*****************************************************************************/
#if (OIV_SHADER_STAGE == OIV_FRAGMENT_SHADER)

vec4 OivFragmentColor()
{
  return gl_Color;
}

vec4 OivFragmentTexCoord( in int unit )
{
#if !defined(OIV_USE_NVIDIA)
  switch (unit)
  {
    default:
    case 0:
      return gl_TexCoord[0];
    case 1:
      return gl_TexCoord[1];
    case 2:
      return gl_TexCoord[2];
    case 3:
      return gl_TexCoord[3];
    case 4:
      return gl_TexCoord[4];
    case 5:
      return gl_TexCoord[5];
    case 6:
      return gl_TexCoord[6];
    case 7:
      return gl_TexCoord[7];
  }
#else
  return gl_TexCoord[unit];
#endif
}

#endif // OIV_SHADER_STAGE

#if (OIV_SHADER_STAGE == OIV_VERTEX_SHADER) || (OIV_SHADER_STAGE == OIV_FRAGMENT_SHADER)

float OivFogFragCoord()
{
#if (OIV_SHADER_STAGE == OIV_VERTEX_SHADER)
  return gl_FogCoord;
#else
  return gl_FogFragCoord;
#endif
}
#endif // OIV_SHADER_STAGE

#if (OIV_SHADER_STAGE == OIV_GEOMETRY_SHADER) || (OIV_SHADER_STAGE == OIV_TESSELLATION_CONTROL_SHADER) || (OIV_SHADER_STAGE == OIV_TESSELLATION_EVALUATION_SHADER)

vec4 OivFrontColor( in int index )
{
  return gl_in[index].gl_FrontColor;
}

vec4 OivBackColor( in int index )
{
  return gl_in[index].gl_BackColor;
}

vec4 OivTexCoord( in int index, in int unit )
{
#if !defined(OIV_USE_NVIDIA)
  switch (unit)
  {
    default:
    case 0:
      return gl_in[index].gl_TexCoord[0];
    case 1:
      return gl_in[index].gl_TexCoord[1];
    case 2:
      return gl_in[index].gl_TexCoord[2];
    case 3:
      return gl_in[index].gl_TexCoord[3];
    case 4:
      return gl_in[index].gl_TexCoord[4];
    case 5:
      return gl_in[index].gl_TexCoord[5];
    case 6:
      return gl_in[index].gl_TexCoord[6];
    case 7:
      return gl_in[index].gl_TexCoord[7];
  }
#else
  return gl_in[index].gl_TexCoord[unit];
#endif
}

float OivFogFragCoord( in int index )
{
  return gl_in[index].gl_FogFragCoord;
}

#endif // OIV_SHADER_STAGE

/*****************************************************************************/
void OivInitVertexData()
{
}

#if (OIV_SHADER_STAGE != OIV_FRAGMENT_SHADER)

void OivSetFrontColor( in vec4 color )
{
#if (OIV_SHADER_STAGE == OIV_TESSELLATION_CONTROL_SHADER)
  gl_out[gl_InvocationID].gl_FrontColor = color;
#else
  gl_FrontColor = color;
#endif
}

void OivSetBackColor( in vec4 color )
{
#if (OIV_SHADER_STAGE == OIV_TESSELLATION_CONTROL_SHADER)
  gl_out[gl_InvocationID].gl_BackColor = color;
#else
  gl_BackColor = color;
#endif
}

void OivSetTexCoord( in int unit, in vec4 coord )
{
#if (OIV_SHADER_STAGE == OIV_TESSELLATION_CONTROL_SHADER)
# if !defined(OIV_USE_NVIDIA)
  switch (unit)
  {
    default:
    case 0:
      gl_out[gl_InvocationID].gl_TexCoord[0] = coord;
    case 1:
      gl_out[gl_InvocationID].gl_TexCoord[1] = coord;
    case 2:
      gl_out[gl_InvocationID].gl_TexCoord[2] = coord;
    case 3:
      gl_out[gl_InvocationID].gl_TexCoord[3] = coord;
    case 4:
      gl_out[gl_InvocationID].gl_TexCoord[4] = coord;
    case 5:
      gl_out[gl_InvocationID].gl_TexCoord[5] = coord;
    case 6:
      gl_out[gl_InvocationID].gl_TexCoord[6] = coord;
    case 7:
      gl_out[gl_InvocationID].gl_TexCoord[7] = coord;
  }
# else
  gl_out[gl_InvocationID].gl_TexCoord[unit] = coord;
# endif
#else
# if !defined(OIV_USE_NVIDIA)
  switch (unit)
  {
    default:
    case 0:
      gl_TexCoord[0] = coord;
    case 1:
      gl_TexCoord[1] = coord;
    case 2:
      gl_TexCoord[2] = coord;
    case 3:
      gl_TexCoord[3] = coord;
    case 4:
      gl_TexCoord[4] = coord;
    case 5:
      gl_TexCoord[5] = coord;
    case 6:
      gl_TexCoord[6] = coord;
    case 7:
      gl_TexCoord[7] = coord;
  }
# else
  gl_TexCoord[unit] = coord;
# endif
#endif
}

void OivSetFogFragCoord( in float coord )
{
#if (OIV_SHADER_STAGE == OIV_TESSELLATION_CONTROL_SHADER)
  gl_out[gl_InvocationID].gl_FogFragCoord = coord;
#else
  gl_FogFragCoord = coord;
#endif
}

#endif // OIV_SHADER_STAGE

#if (OIV_SHADER_STAGE == OIV_FRAGMENT_SHADER)

void OivFragmentOutput( in int bufferIndex, in vec4 outputValue )
{
  gl_FragData[bufferIndex] = outputValue;
}

void OivFragmentOutput( in vec4 outputValue )
{
  OivFragmentOutput(0, outputValue);
}

#endif // OIV_SHADER_STAGE

#endif /* OIV_SHADER_VARIABLES_H */

---

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