R2LightAmbient.h File Reference

Functions and types related to ambient lighting. More...

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures
struct	R2_light_ambient_t
	A ambient light type. More...

Functions
vec3	R2_lightAmbientTerm (const R2_light_ambient_t light, const vec2 uv)

Detailed Description

Functions and types related to ambient lighting.

Definition in file R2LightAmbient.h.

Function Documentation

R2_lightAmbientTerm()

vec3 R2_lightAmbientTerm	(	const R2_light_ambient_t	light,
		const vec2	uv
	)

Calculate the "diffuse" term for a ambient light. "Diffuse" in this case appears to be slight misnomer, because the light is supposed to be providing an ambient term. However, the R2 package treats ambient light as simply low intensity non-directional diffuse light.

Parameters

light	The light parameters
uv	The screen position in UV coordinates (used for sampling from the occlusion map)

Returns

The diffuse term

Definition at line 29 of file R2LightAmbient.h.

{
  float occ = texture (light.occlusion, uv).x;
  return light.color * (light.intensity * occ);
}