From BlenderWiki
Lighting
Material
void GPU_set_basic_material_shininess(int shininess); void GPU_set_basic_material_specular(const float specular[4]);
Lights
uniform mat3 b_NormalMatrix; // Transpose of upper 3x3 of b_ModelViewMatrix uniform mat4 b_ModelViewMatrixInverse; struct b_MaterialParameters { vec4 specular; // Scm * Scli float shininess; // Srm }; uniform b_MaterialParameters b_FrontMaterial;
struct b_LightSourceParameters { vec4 diffuse; // Dcli vec4 specular; // Scli vec4 position; // Ppli vec3 spotDirection; // Sdli float spotExponent; // Srli float spotCutoff; // Crli // (range: [0.0,90.0], 180.0) float spotCosCutoff; // Derived: cos(Crli) // (range: [1.0,0.0],-1.0) float constantAttenuation; // K0 float linearAttenuation; // K1 float quadraticAttenuation; // K2 }; uniform b_LightSourceParameters b_LightSource[b_MaxLights]; uniform int b_LightCount;
typedef struct GPUbasiclight { float position[4]; float diffuse [4]; float specular[4]; float constant_attenuation; float linear_attenuation; float quadratic_attenuation; float spot_direction[3]; float spot_cutoff; float spot_exponent; } GPUbasiclight;
Set lights and also applies appropriate transformations on the positions and spot directions.
void GPU_set_basic_lights(int light_count, GPUbasiclight lights[]); int GPU_get_basic_lights(GPUbasiclight lights_out[]);
Set lights without transforming position or spot_direction. Suitable for restoring a backup copy of previous light state. Keeps position and spot position from getting transformed twice.
void GPU_restore_basic_lights(int light_count, GPUbasiclight lights[]);
A white directional light shining straight down with no attenuation or spot effects. Same as the default legacy OpenGL light number 0.
extern const GPUbasiclight GPU_DEFAULT_LIGHT;
