Inventor/oivShaderVariables.h File Reference

oiv_include <Inventor/oivShaderStages.h> More...

Go to the source code of this file.

Functions
float	OivFogFragCoord ()
void	OivInitVertexData ()
void	OivSetFrontColor (in vec4 color)
void	OivSetBackColor (in vec4 color)
void	OivSetTexCoord (in int unit, in vec4 coord)
void	OivSetFogFragCoord (in float coord)

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Detailed Description

oiv_include <Inventor/oivShaderStages.h>

This file contains fonction to acces built-in GLSL varyings

Definition in file oivShaderVariables.h.

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Function Documentation

float OivFogFragCoord

(

)

IN.

Get the fog frag coord of the input vertex or fragment. Available in:

• Vertex Shader
• Fragment Shader

void OivInitVertexData

(

)

OUT.

Some GPU require vertex data to be initialized even if you don't use them. If you encounter message error such as: "The fragment shader uses varying _I;OIV_VERTEX_DATA;xxx, but previous shader does not write to it.", you should call this method at the beginning of your vertex shader main.

void OivSetBackColor

(

in vec4

color

)

Set the back color of the output vertex for the next shader stage.

Available in:

• Vertex Shader
• Tessellation Control Shader
• Tessellation Evaluation Shader
• Geometry Shader

void OivSetFogFragCoord

(

in float

coord

)

Set the fog frag coord of the output vertex for the next shader stage.

Available in:

• Vertex Shader
• Tessellation Control Shader
• Tessellation Evaluation Shader
• Geometry Shader

void OivSetFrontColor

(

in vec4

color

)

Set the front color of the output vertex for the next shader stage.

Available in:

• Vertex Shader
• Tessellation Control Shader
• Tessellation Evaluation Shader
• Geometry Shader

void OivSetTexCoord	(	in int	unit,
		in vec4	coord
	)

Set the texture coordinates of the output vertex for the next shader stage.

Available in:

• Vertex Shader
• Tessellation Control Shader
• Tessellation Evaluation Shader
• Geometry Shader