R2 Shaders
R2LightSphericalLambertPhong.h
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1 #ifndef R2_LIGHT_SPHERICAL_LAMBERT_PHONG_H
2 #define R2_LIGHT_SPHERICAL_LAMBERT_PHONG_H
3 
4 /// \file R2LightSphericalLambertPhong.h
5 /// \brief A spherical light with Phong specular highlights
6 
7 #include "R2LightShaderMain.h"
8 #include "R2LightPositional.h"
9 #include "R2LightSpherical.h"
10 
11 uniform R2_light_positional_t R2_light_spherical;
12 
13 R2_light_output_t
14 R2_deferredLightMain(
15  const R2_reconstructed_surface_t surface)
16 {
17  R2_light_positional_vectors_t vectors = R2_lightPositionalVectors(
18  R2_light_spherical, surface.position.xyz, surface.normal);
19  float attenuation = R2_lightPositionalAttenuation(
20  R2_light_spherical, vectors.distance);
21 
22  vec3 diffuse =
23  R2_lightSphericalDiffuseLambertTerm(R2_light_spherical, vectors);
24  vec3 specular =
25  R2_lightSphericalSpecularPhongTerm(
26  R2_light_spherical,
27  vectors,
28  surface.specular,
29  surface.specular_exponent);
30 
31  return R2_light_output_t(
32  diffuse * attenuation, specular * attenuation);
33 }
34 
35 #endif // R2_LIGHT_SPHERICAL_LAMBERT_PHONG_H
R2_deferredLightMain
R2_light_output_t R2_deferredLightMain(const R2_reconstructed_surface_t surface)
Definition: R2LightSphericalLambertPhong.h:14
R2_lightPositionalAttenuation
float R2_lightPositionalAttenuation(const R2_light_positional_t light, const float distance)
Definition: R2LightPositional.h:78
R2_light_positional_vectors_t
Vectors used when calculating positional lighting.
Definition: R2LightPositional.h:9
R2_reconstructed_surface_t::position
vec4 position
The eye-space position of the surface.
Definition: R2ReconstructedSurface.h:30
R2_reconstructed_surface_t::specular_exponent
float specular_exponent
The sampled surface specular exponent in the range [0, 256]
Definition: R2ReconstructedSurface.h:25
R2_lightSphericalDiffuseLambertTerm
vec3 R2_lightSphericalDiffuseLambertTerm(const R2_light_positional_t light, const R2_light_positional_vectors_t v)
Definition: R2LightSpherical.h:17
R2_reconstructed_surface_t
Reconstructed surface data, taken from the G-Buffer.
Definition: R2ReconstructedSurface.h:16
R2_light_positional_vectors_t::distance
float distance
The distance between the surface and light source.
Definition: R2LightPositional.h:19
R2_light_positional_t
A positional light type.
Definition: R2LightPositional.h:24
R2_reconstructed_surface_t::normal
vec3 normal
The eye-space normal vector of the surface.
Definition: R2ReconstructedSurface.h:28
R2_lightPositionalVectors
R2_light_positional_vectors_t R2_lightPositionalVectors(const R2_light_positional_t light, const vec3 p, const vec3 n)
Definition: R2LightPositional.h:46
R2LightShaderMain.h
The main function that all deferred light shaders must implement.
R2_reconstructed_surface_t::specular
vec3 specular
The sampled surface specular color.
Definition: R2ReconstructedSurface.h:23
R2LightSpherical.h
Functions and types related to spherical lighting.
R2_lightSphericalSpecularPhongTerm
vec3 R2_lightSphericalSpecularPhongTerm(const R2_light_positional_t light, const R2_light_positional_vectors_t v, const vec3 specular_color, const float specular_exponent)
Definition: R2LightSpherical.h:35
R2LightPositional.h
Functions and types related to positional lighting.
R2_light_output_t
The type of light values that all deferred light shaders calculate.
Definition: R2LightOutput.h:9
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