lighting.nvf

游戏编程精华02－含有几十个游戏编程例子

#include "constants.h"

vs.1.0

// Helpers for the lighting
#beginfragment set_power
mov r_intensity.w, c_mat_power.w
#endfragment

#beginfragment clamp_diffuse_exponentiate_specular
lit r_intensity_result, r_intensity
#endfragment

#beginfragment pointlight_accumulate_diffuse
mad r_diffusecolor.xyz, r_intensity_result.y, c_pointlight_diffuse++, r_diffusecolor
#endfragment

#beginfragment pointlight_accumulate_diffuse_last
mad oD0.xyz, r_intensity_result.y, c_pointlight_diffuse++, r_diffusecolor
#endfragment

#beginfragment pointlight_accumulate_specular_first
mul r_specularcolor.xyz, r_intensity_result.z, c_pointlight_specular++
#endfragment

#beginfragment pointlight_accumulate_specular
mad r_specularcolor.xyz, r_intensity_result.z, c_pointlight_specular++, r_specularcolor
#endfragment

#beginfragment pointlight_accumulate_specular_last
mad oD1.xyz, r_intensity_result.z, c_pointlight_specular++, r_specularcolor
#endfragment

#beginfragment pointlight_accumulate_specular_first_and_last
mul oD1.xyz, r_intensity_result.z, c_pointlight_specular++
#endfragment

// Dirlight
#beginfragment dirlight_accumulate_diffuse
mad r_diffusecolor.xyz, r_intensity_result.y, c_dirlight_diffuse++, r_diffusecolor
#endfragment

#beginfragment dirlight_accumulate_diffuse_last
mad oD0.xyz, r_intensity_result.y, c_dirlight_diffuse++, r_diffusecolor
#endfragment

#beginfragment dirlight_accumulate_specular_first
mul r_specularcolor.xyz, r_intensity_result.z, c_dirlight_specular++
#endfragment

#beginfragment dirlight_accumulate_specular
mad r_specularcolor.xyz, r_intensity_result.z, c_dirlight_specular++, r_specularcolor
#endfragment

#beginfragment dirlight_accumulate_specular_last
mad oD1.xyz, r_intensity_result.z, c_dirlight_specular++, r_specularcolor
#endfragment

#beginfragment dirlight_accumulate_specular_first_and_last
mul oD1.xyz, r_intensity_result.z, c_dirlight_specular++
#endfragment