Merge pull request #486 from mohsengreen1388/pbr-example
example: I can add physic base render to example
This commit is contained in:
Milan Nikolic
GitHub
commit
5ca0e770e3
14 changed files with 859 additions and 0 deletions
296
examples/shaders/pbr/glsl330/pbr.fs
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296
examples/shaders/pbr/glsl330/pbr.fs
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#version 330
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#define MAX_LIGHTS 4
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#define LIGHT_DIRECTIONAL 0
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#define LIGHT_POINT 1
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#define LIGHT_SPOT 2
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#define PI 3.14159265358979323846
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struct Light{
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int enabled;
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int type;
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float enargy;
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float cutOff ;
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float outerCutOff;
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float constant;
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float linear ;
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float quadratic ;
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float shiny ;
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float specularStr;
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vec3 position;
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vec3 direction;
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vec3 lightColor;
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};
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// Input vertex attributes (from vertex shader)
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in vec3 fragPosition;
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in vec2 fragTexCoord;
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in vec4 fragColor;
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in vec3 fragNormal;
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in vec4 shadowPos;
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in mat3 TBN;
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// Output fragment color
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out vec4 finalColor;
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// mask
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uniform sampler2D mask;
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uniform int frame;
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// Input uniform values
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uniform int numOfLights = 4;
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uniform sampler2D albedoMap;
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uniform sampler2D mraMap;
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uniform sampler2D normalMap;
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uniform sampler2D emissiveMap; // r: Hight g:emissive
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// Input uniform values
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uniform sampler2D texture0;
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uniform sampler2D texture1;
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uniform sampler2D flashlight;
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uniform vec4 colDiffuse;
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uniform vec2 tiling = vec2(0.5);
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uniform vec2 offset ;
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uniform vec2 tilingFlashlight = vec2(0.5);
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uniform vec2 offsetFlashlight ;
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uniform int useTexAlbedo =1;
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uniform int useTexNormal = 0;
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uniform int useTexMRA =1;
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uniform int useTexEmissive =1;
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uniform vec4 albedoColor ;
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uniform vec4 emissiveColor ;
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uniform float normalValue =0.5;
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uniform float metallicValue =0.4;
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uniform float roughnessValue =0;
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uniform float aoValue =0.8;
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uniform float emissivePower ;
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// Input lighting values
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uniform Light lights[MAX_LIGHTS];
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uniform vec3 viewPos;
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uniform vec3 ambientColor = vec3(1,1,1);
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uniform float ambientStrength = 0.2;
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uniform float ambient = 0.03;
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uniform float fogDensity;
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vec3 CalcDirLight(Light light,vec3 normal,vec3 viewDir,vec3 albedo,vec3 baseRefl,float roughness,float metallic);
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vec3 CalcPointLight(Light light,vec3 normal,vec3 viewDir,vec3 albedo,vec3 baseRefl,float roughness,float metallic);
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vec3 CalcSpotLight(Light light,vec3 normal,vec3 viewDir,vec3 albedo,vec3 baseRefl,float roughness,float metallic);
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// Reflectivity in range 0.0 to 1.0
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// NOTE: Reflectivity is increased when surface view at larger angle
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vec3 SchlickFresnel(float hDotV,vec3 refl)
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{
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return refl + (1.0 - refl)*pow(1.0 - hDotV, 5.0);
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}
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float GgxDistribution(float nDotH,float roughness)
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{
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float a = roughness * roughness * roughness * roughness;
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float d = nDotH * nDotH * (a - 1.0) + 1.0;
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d = PI * d * d;
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return a / max(d,0.0000001);
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}
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float GeomSmith(float nDotV,float nDotL,float roughness)
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{
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float r = roughness + 1.0;
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float k = r*r / 8.0;
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float ik = 1.0 - k;
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float ggx1 = nDotV/(nDotV*ik + k);
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float ggx2 = nDotL/(nDotL*ik + k);
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return ggx1*ggx2;
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}
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vec3 ComputePBR()
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{
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vec3 albedo = texture(albedoMap,vec2(fragTexCoord.x*tiling.x + offset.x, fragTexCoord.y*tiling.y + offset.y)).rgb;
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albedo = vec3(albedoColor.x*albedo.x, albedoColor.y*albedo.y, albedoColor.z*albedo.z);
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float metallic = clamp(metallicValue, 0.0, 1.0);
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float roughness = clamp(roughnessValue, 0.0, 1.0);
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float ao = clamp(aoValue, 0.0, 1.0);
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if (useTexMRA == 1)
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{
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vec4 mra = texture(mraMap, vec2(fragTexCoord.x*tiling.x + offset.x, fragTexCoord.y*tiling.y + offset.y))*useTexMRA;
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metallic = clamp(mra.r + metallicValue, 0.04, 1.0);
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roughness = clamp(mra.g + roughnessValue, 0.04, 1.0);
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ao = (mra.b + aoValue)*0.5;
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}
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vec3 N = normalize(fragNormal);
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if (useTexNormal == 1)
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{
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N = texture(normalMap, vec2(fragTexCoord.x*tiling.x + offset.y, fragTexCoord.y*tiling.y + offset.y)).rgb;
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N = normalize(N*2.0 - 1.0);
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N = normalize(N*TBN);
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}
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vec3 V = normalize(viewPos - fragPosition);
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vec3 emissive = vec3(0);
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emissive = (texture(emissiveMap, vec2(fragTexCoord.x*tiling.x+offset.x, fragTexCoord.y*tiling.y+offset.y)).rgb).g * emissiveColor.rgb*emissivePower * useTexEmissive;
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// return N;//vec3(metallic,metallic,metallic);
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// if dia-electric use base reflectivity of 0.04 otherwise ut is a metal use albedo as base reflectivity
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vec3 baseRefl = mix(vec3(0.04), albedo.rgb, metallic);
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vec3 lightAccum = vec3(0.0); // Acumulate lighting lum
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vec3 norm=N;
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vec3 viewDir=V;
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vec3 result = vec3(0.0);
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for (int i = 0; i < MAX_LIGHTS; i++){
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if(lights[i].enabled == 1){
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if(lights[i].type == LIGHT_DIRECTIONAL){
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result += CalcDirLight(lights[i],norm,viewDir,albedo,baseRefl,roughness,metallic);
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}
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if(lights[i].type == LIGHT_POINT){
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result += CalcPointLight(lights[i],norm,viewDir,albedo,baseRefl,roughness,metallic);
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}
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if(lights[i].type == LIGHT_SPOT){
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result += CalcSpotLight(lights[i],norm,viewDir,albedo,baseRefl,roughness,metallic);
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}
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}
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}
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vec3 ambientFinal = (ambientColor + albedo)*ambient*0.5;
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return ambientFinal+result*ao + emissive;
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}
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void main()
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{
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vec3 color = ComputePBR();
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// HDR tonemapping
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color = pow(color, color + vec3(1.0));
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// // Gamma correction
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// color = pow(color, vec3(1.0/2.5));
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// Fog calculation
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float dist = length(viewPos - fragPosition);
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// these could be parameters...
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const vec4 fogColor = vec4(0.5, 0.5, 0.5, 1.0);
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// Exponential fog
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float fogFactor = 1.0/exp((dist*fogDensity)*(dist*fogDensity));
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fogFactor = clamp(fogFactor, 0.0, 1.0);
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finalColor = mix(fogColor,vec4(color,1.0), fogFactor);
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}
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vec3 CalcDirLight(Light light,vec3 normal,vec3 viewDir,vec3 albedo,vec3 baseRefl,float roughness,float metallic)
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{
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vec3 L = normalize(-light.direction);
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float diff=max(dot(normal,L),0.0);
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vec3 diffuse=light.lightColor*diff*vec3(texture(texture0,fragTexCoord));
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vec3 H = normalize(diffuse + L);
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// Cook-Torrance BRDF distribution function
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float nDotV = max(dot(normal,viewDir), 0.0000001);
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float nDotL = max(dot(normal,L), 0.0000001);
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float hDotV = max(dot(H,viewDir), 0.0);
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float nDotH = max(dot(normal,H), 0.0);
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float D = GgxDistribution(nDotH, roughness); // Larger the more micro-facets aligned to H
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float G = GeomSmith(nDotV, nDotL, roughness); // Smaller the more micro-facets shadow
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vec3 F = SchlickFresnel(hDotV, baseRefl); // Fresnel proportion of specular reflectance
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vec3 spec = (D*G*F)/(4.0*nDotV*nDotL);
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// Difuse and spec light can't be above 1.0
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// kD = 1.0 - kS diffuse component is equal 1.0 - spec comonent
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vec3 kD = vec3(1.0) - F;
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// Mult kD by the inverse of metallnes, only non-metals should have diffuse light
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kD *= 1.0 - metallic;
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// Angle of light has impact on result
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return ((kD*albedo.rgb/PI + spec)*nDotL)*light.enabled;
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}
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vec3 CalcPointLight(Light light,vec3 normal,vec3 viewDir,vec3 albedo,vec3 baseRefl,float roughness,float metallic)
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{
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vec3 L = normalize(light.position - fragPosition);
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vec3 H = normalize(viewDir + L);
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float distance=length(light.position-fragPosition);
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float attenuation=light.enargy/(light.constant+light.linear*distance+light.quadratic*(distance*distance));
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vec3 radiance = light.lightColor.rgb*light.enargy*attenuation;
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// Cook-Torrance BRDF distribution function
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float nDotV = max(dot(normal,viewDir), 0.0000001);
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float nDotL = max(dot(normal,L), 0.0000001);
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float hDotV = max(dot(H,viewDir), 0.0);
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float nDotH = max(dot(normal,H), 0.0);
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float D = GgxDistribution(nDotH, roughness); // Larger the more micro-facets aligned to H
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float G = GeomSmith(nDotV, nDotL, roughness); // Smaller the more micro-facets shadow
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vec3 F = SchlickFresnel(hDotV, baseRefl); // Fresnel proportion of specular reflectance
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vec3 spec = (D*G*F)/(4.0*nDotV*nDotL);
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// Difuse and spec light can't be above 1.0
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// kD = 1.0 - kS diffuse component is equal 1.0 - spec comonent
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vec3 kD = vec3(1.0) - F;
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// Mult kD by the inverse of metallnes, only non-metals should have diffuse light
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kD *= 1.0 - metallic;
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// Angle of light has impact on result
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return ((kD*albedo.rgb/PI + spec)*radiance*nDotL)*light.enabled ;
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}
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vec3 CalcSpotLight(Light light,vec3 normal,vec3 viewDir,vec3 albedo,vec3 baseRefl,float roughness,float metallic){
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vec3 L = normalize(light.position - fragPosition);
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float theta=dot(L,normalize(-light.direction));
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float epsilon=cos(radians(light.cutOff))-cos(radians(light.outerCutOff));
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float intensity=smoothstep(0.0,1.0,(theta-cos(radians(light.outerCutOff)))/epsilon);//clamp((theta-cos(radians(light.outerCutOff)))/epsilon,0.0,1.0);
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intensity*= length(vec3(texture(flashlight,vec2(fragTexCoord.x*tilingFlashlight.x + offsetFlashlight.y, fragTexCoord.y*tilingFlashlight.y + offsetFlashlight.y)).rgb));
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float diff=max(dot(normal,L),0.0);
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vec3 H = light.lightColor*diff*vec3(texture(texture0,fragTexCoord));
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float distance=length(light.position-fragPosition);
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float attenuation=light.enargy/(light.constant+light.linear*distance+light.quadratic*(distance*distance));
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vec3 radiance = light.lightColor.rgb*light.enargy*attenuation;
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H*=intensity;
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// Cook-Torrance BRDF distribution function
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float nDotV = max(dot(normal,viewDir), 0.0000001);
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float nDotL = max(dot(normal,L), 0.0000001);
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float hDotV = max(dot(H,viewDir), 0.0);
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float nDotH = max(dot(normal,H), 0.0);
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float D = GgxDistribution(nDotH, roughness); // Larger the more micro-facets aligned to H
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float G = GeomSmith(nDotV, nDotL, roughness); // Smaller the more micro-facets shadow
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vec3 F = SchlickFresnel(hDotV, baseRefl); // Fresnel proportion of specular reflectance
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vec3 spec = (D*G*F)/(4.0*nDotV*nDotL);
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spec*=intensity;
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// Difuse and spec light can't be above 1.0
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// kD = 1.0 - kS diffuse component is equal 1.0 - spec comonent
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vec3 kD = vec3(1.0) - F;
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// Mult kD by the inverse of metallnes, only non-metals should have diffuse light
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kD *= 1.0 - metallic;
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// Angle of light has impact on result
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return ((kD*albedo.rgb/PI + spec)*radiance*nDotL)*light.enabled;
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}
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50
examples/shaders/pbr/glsl330/pbr.vs
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50
examples/shaders/pbr/glsl330/pbr.vs
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#version 330
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// Input vertex attributes
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in vec3 vertexPosition;
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in vec2 vertexTexCoord;
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in vec3 vertexNormal;
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in vec3 vertexTangent;
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in vec4 vertexColor;
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// Input uniform values
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uniform mat4 mvp;
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uniform mat4 matModel;
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uniform mat4 matNormal;
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uniform vec3 lightPos;
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uniform vec4 difColor;
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// Output vertex attributes (to fragment shader)
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out vec3 fragPosition;
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out vec2 fragTexCoord;
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out vec2 fragTexCoord2;
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out vec4 fragColor;
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out vec3 fragNormal;
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out mat3 TBN;
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const float normalOffset = 0.1;
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void main()
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{
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// Compute binormal from vertex normal and tangent
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vec3 vertexBinormal = cross(vertexNormal, vertexTangent);
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// Compute fragment normal based on normal transformations
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mat3 normalMatrix = transpose(inverse(mat3(matModel)));
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// Compute fragment position based on model transformations
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fragPosition = vec3(matModel*vec4(vertexPosition, 1.0f));
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fragTexCoord = vertexTexCoord;
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fragNormal = normalize(normalMatrix*vertexNormal);
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vec3 fragTangent = normalize(normalMatrix*vertexTangent);
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fragTangent = normalize(fragTangent - dot(fragTangent, fragNormal)*fragNormal);
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vec3 fragBinormal = normalize(normalMatrix*vertexBinormal);
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fragBinormal = cross(fragNormal, fragTangent);
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TBN = transpose(mat3(fragTangent, fragBinormal, fragNormal));
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// Calculate final vertex position
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gl_Position = mvp*vec4(vertexPosition, 1.0);
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}
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212
examples/shaders/pbr/light.go
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212
examples/shaders/pbr/light.go
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package main
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import (
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"fmt"
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rl "github.com/gen2brain/raylib-go/raylib"
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"unsafe"
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)
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type LightType int32
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const (
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LightTypeDirectional LightType = iota
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LightTypePoint
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LightTypeSpot
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)
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type Light struct {
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Shader rl.Shader
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combineStatus bool
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lightType LightType
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position rl.Vector3
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direction rl.Vector3
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lightColor rl.Color
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enabled int32
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enargy float32
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cutOff float32
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outerCutOff float32
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constant float32
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linear float32
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quadratic float32
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shiny float32
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specularStr float32
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// shader locations
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enabledLoc int32
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typeLoc int32
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posLoc int32
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dirLoc int32
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colorLoc int32
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viewPosLoc int32
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enargyLoc int32
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cutOffLoc int32
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outerCutOffLoc int32
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constantLoc int32
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linearLoc int32
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quadraticLoc int32
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shinyLoc int32
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specularStrLoc int32
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}
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var MaxLights = 5
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var lightCount = 0
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func (lt *Light) NewLight(
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lightType LightType,
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position, direction rl.Vector3,
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color rl.Color,
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enargy float32, shader *rl.Shader) Light {
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light := Light{
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Shader: *shader,
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}
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if lightCount < MaxLights {
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light.enabled = 1
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light.lightType = lightType
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light.position = position
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light.direction = direction
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light.lightColor = color
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light.enargy = enargy
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light.cutOff = 12.5
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light.outerCutOff = 17.5
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light.constant = 1.0
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light.linear = 0.09
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light.quadratic = 0.032
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light.shiny = 32.0
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light.specularStr = 0.9
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light.enabledLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].enabled", lightCount))
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light.typeLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].type", lightCount))
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light.posLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].position", lightCount))
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light.dirLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].direction", lightCount))
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light.colorLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].lightColor", lightCount))
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light.enargyLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].enargy", lightCount))
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light.cutOffLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].cutOff", lightCount))
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light.outerCutOffLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].outerCutOff", lightCount))
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light.constantLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].constant", lightCount))
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light.linearLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].linear", lightCount))
|
||||
light.quadraticLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].quadratic", lightCount))
|
||||
light.shinyLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].shiny", lightCount))
|
||||
light.specularStrLoc = rl.GetShaderLocation(*shader, fmt.Sprintf("lights[%d].specularStr", lightCount))
|
||||
|
||||
light.UpdateValues()
|
||||
lightCount++
|
||||
}
|
||||
return light
|
||||
}
|
||||
|
||||
func (lt *Light) UpdateValues() {
|
||||
// Send to shader light enabled state and type
|
||||
rl.SetShaderValue(lt.Shader, lt.enabledLoc, unsafe.Slice((*float32)(unsafe.Pointer(<.enabled)), 4), rl.ShaderUniformInt)
|
||||
rl.SetShaderValue(lt.Shader, lt.typeLoc, unsafe.Slice((*float32)(unsafe.Pointer(<.lightType)), 4), rl.ShaderUniformInt)
|
||||
|
||||
// Send to shader light position values
|
||||
rl.SetShaderValue(lt.Shader, lt.posLoc, []float32{lt.position.X, lt.position.Y, lt.position.Z}, rl.ShaderUniformVec3)
|
||||
|
||||
// Send to shader light direction values
|
||||
rl.SetShaderValue(lt.Shader, lt.dirLoc, []float32{lt.direction.X, lt.direction.Y, lt.direction.Z}, rl.ShaderUniformVec3)
|
||||
|
||||
// Send to shader light color values
|
||||
rl.SetShaderValue(lt.Shader, lt.colorLoc,
|
||||
[]float32{float32(lt.lightColor.R) / 255, float32(lt.lightColor.G) / 255, float32(lt.lightColor.B) / 255},
|
||||
rl.ShaderUniformVec3)
|
||||
|
||||
// Send to shader light enargy values
|
||||
rl.SetShaderValue(lt.Shader, lt.enargyLoc, []float32{lt.enargy}, rl.ShaderUniformFloat)
|
||||
|
||||
// Send to shader light spot values
|
||||
rl.SetShaderValue(lt.Shader, lt.cutOffLoc, []float32{lt.cutOff}, rl.ShaderUniformFloat)
|
||||
rl.SetShaderValue(lt.Shader, lt.outerCutOffLoc, []float32{lt.outerCutOff}, rl.ShaderUniformFloat)
|
||||
|
||||
// Send to shader light pointLight values
|
||||
rl.SetShaderValue(lt.Shader, lt.constantLoc, []float32{lt.constant}, rl.ShaderUniformFloat)
|
||||
rl.SetShaderValue(lt.Shader, lt.linearLoc, []float32{lt.linear}, rl.ShaderUniformFloat)
|
||||
rl.SetShaderValue(lt.Shader, lt.quadraticLoc, []float32{lt.quadratic}, rl.ShaderUniformFloat)
|
||||
|
||||
// Send to shader light shiness values
|
||||
rl.SetShaderValue(lt.Shader, lt.shinyLoc, []float32{lt.shiny}, rl.ShaderUniformFloat)
|
||||
rl.SetShaderValue(lt.Shader, lt.specularStrLoc, []float32{lt.specularStr}, rl.ShaderUniformFloat)
|
||||
|
||||
}
|
||||
|
||||
// if you want more 5 light in the light.fs change #define MAX_LIGHTS "your number"
|
||||
func (lt *Light) SetMaxLight(max int) {
|
||||
MaxLights = max
|
||||
}
|
||||
|
||||
func (lt *Light) SetConfigSpotLight(light *Light, cutOff, outerCutOff float32) {
|
||||
light.cutOff = cutOff
|
||||
light.outerCutOff = outerCutOff
|
||||
light.UpdateValues()
|
||||
}
|
||||
|
||||
func (lt *Light) SetConfigPointLight(light *Light, constant, linear, quadratic float32) {
|
||||
light.constant = constant
|
||||
light.linear = linear
|
||||
light.quadratic = quadratic
|
||||
light.UpdateValues()
|
||||
}
|
||||
|
||||
func (lt *Light) SetConfigShiness(light *Light, shiny, specularStr float32) {
|
||||
light.shiny = shiny
|
||||
light.specularStr = specularStr
|
||||
light.UpdateValues()
|
||||
}
|
||||
|
||||
func (lt *Light) SetMaterialTexture(materials []*rl.Material, texture []*rl.Texture2D) {
|
||||
for index, material := range materials {
|
||||
rl.SetMaterialTexture(material, rl.MapDiffuse, *texture[index])
|
||||
}
|
||||
}
|
||||
|
||||
func (lt *Light) SetFlashlightTexture(materials []*rl.Material, texure *rl.Texture2D) {
|
||||
|
||||
lt.Shader.UpdateLocation(rl.ShaderLocMapOcclusion, rl.GetShaderLocation(lt.Shader, "flashlight"))
|
||||
for _, material := range materials {
|
||||
rl.SetMaterialTexture(material, rl.MapOcclusion, *texure)
|
||||
}
|
||||
}
|
||||
|
||||
func (lt *Light) Init(ambientStrength float32, ambientColor rl.Vector3) {
|
||||
if !lt.combineStatus {
|
||||
lt.configShader()
|
||||
}
|
||||
lt.viewPosLoc = rl.GetShaderLocation(lt.Shader, "viewPos")
|
||||
rl.SetShaderValue(lt.Shader, rl.GetShaderLocation(lt.Shader, "ambientColor"), []float32{ambientColor.X, ambientColor.Y, ambientColor.Z}, rl.ShaderUniformVec3)
|
||||
rl.SetShaderValue(lt.Shader, rl.GetShaderLocation(lt.Shader, "ambientStrength"), []float32{ambientStrength}, rl.ShaderUniformFloat)
|
||||
}
|
||||
|
||||
func (lt *Light) DisableLight(light *Light) {
|
||||
light.enabled *= -1
|
||||
light.UpdateValues()
|
||||
}
|
||||
|
||||
func (lt *Light) EnableLight(light *Light) {
|
||||
light.enabled = 1
|
||||
light.UpdateValues()
|
||||
}
|
||||
|
||||
func (lt *Light) DrawSpherelight(light *Light) {
|
||||
if light.enabled == 1 {
|
||||
rl.DrawSphereEx(light.position, 0.2, 8, 8, light.lightColor)
|
||||
} else {
|
||||
rl.DrawSphereWires(light.position, 0.2, 8, 8, rl.Fade(light.lightColor, 0.3))
|
||||
}
|
||||
}
|
||||
|
||||
func (lt *Light) UpdateReflect(cameraPos rl.Vector3) {
|
||||
rl.SetShaderValue(lt.Shader, lt.viewPosLoc, []float32{cameraPos.X, cameraPos.Y, cameraPos.Z}, rl.ShaderUniformVec3)
|
||||
}
|
||||
|
||||
func (lt *Light) configShader() {
|
||||
lt.Shader = rl.LoadShader("pbr.vs","./pbr.fs")
|
||||
}
|
||||
|
||||
// exce before init or set manually
|
||||
func (lt *Light) SetCombineShader(CombineShader *rl.Shader) {
|
||||
lt.combineStatus = true
|
||||
lt.Shader = *CombineShader
|
||||
}
|
||||
|
||||
func (lt *Light) Unload() {
|
||||
rl.UnloadShader(lt.Shader)
|
||||
}
|
||||
83
examples/shaders/pbr/main.go
Normal file
83
examples/shaders/pbr/main.go
Normal file
|
|
@ -0,0 +1,83 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
rl "github.com/gen2brain/raylib-go/raylib"
|
||||
)
|
||||
|
||||
func main() {
|
||||
|
||||
screenWidth := int32(900)
|
||||
screenHeight := int32(500)
|
||||
rl.SetConfigFlags(rl.FlagMsaa4xHint) //ENABLE 4X MSAA IF AVAILABLE
|
||||
|
||||
rl.InitWindow(screenWidth, screenHeight, "raylib [shaders] example - basic pbr")
|
||||
|
||||
car := rl.LoadModel("./models/old_car_new.glb")
|
||||
plane := rl.LoadModel("./models/plane.glb")
|
||||
|
||||
cam := rl.Camera3D{}
|
||||
cam.Fovy = 45
|
||||
cam.Position = rl.Vector3{2, 2, 8}
|
||||
cam.Projection = rl.CameraPerspective
|
||||
cam.Up = rl.Vector3{0, 1, 0}
|
||||
|
||||
shader := rl.LoadShader("./glsl330/pbr.vs", "./glsl330/pbr.fs")
|
||||
|
||||
l := Light{}
|
||||
l.SetCombineShader(&shader)
|
||||
l.Init(0.0, rl.Vector3{1, 1, 1})
|
||||
l1 := l.NewLight(LightTypePoint, rl.Vector3{-1, 1, -2}, rl.Vector3{}, rl.Yellow, 4, &l.Shader)
|
||||
l2 := l.NewLight(LightTypePoint, rl.Vector3{2, 1, 1}, rl.Vector3{}, rl.Green, 3.3, &l.Shader)
|
||||
l3 := l.NewLight(LightTypePoint, rl.Vector3{-2, 1, 1}, rl.Vector3{}, rl.Red, 8.3, &l.Shader)
|
||||
l4 := l.NewLight(LightTypePoint, rl.Vector3{1, 1, -2}, rl.Vector3{}, rl.Blue, 2, &l.Shader)
|
||||
|
||||
p := PhysicRender{}
|
||||
p.SetCombineShader(&shader)
|
||||
p.Init()
|
||||
|
||||
p.UseTexAlbedo()
|
||||
p.UseTexMRA()
|
||||
p.UseTexNormal()
|
||||
p.UseTexEmissive()
|
||||
|
||||
car.GetMaterials()[0].Shader = shader
|
||||
|
||||
p.AlbedoColorModel(&car, rl.White)
|
||||
p.MetallicValue(0.0)
|
||||
p.RoughnessValue(0)
|
||||
p.EmissivePower(0.0)
|
||||
p.AoValue(0.0)
|
||||
p.NormalValue(0.2)
|
||||
|
||||
p.EmissiveColor(rl.NewColor(255, 162, 0, 255))
|
||||
p.TextureMapAlbedo(&car.GetMaterials()[0], rl.LoadTexture("models/old_car_d.png"))
|
||||
p.TextureMapMetalness(&car.GetMaterials()[0], rl.LoadTexture("models/old_car_mra.png"))
|
||||
p.TextureMapNormal(&car.GetMaterials()[0], rl.LoadTexture("models/old_car_n.png"))
|
||||
rl.SetMaterialTexture(&car.GetMaterials()[0], rl.MapEmission, rl.LoadTexture("models/old_car_e.png"))
|
||||
|
||||
p.SetTiling(rl.NewVector2(1, 1))
|
||||
|
||||
plane.GetMaterials()[0].Shader = shader
|
||||
p.TextureMapAlbedo(&plane.GetMaterials()[0], rl.LoadTexture("./models/road_a.png"))
|
||||
p.TextureMapNormal(&plane.GetMaterials()[0], rl.LoadTexture("./models/road_n.png"))
|
||||
p.TextureMapMetalness(&plane.GetMaterials()[0], rl.LoadTexture("./models/road_mra.png"))
|
||||
|
||||
rl.SetTargetFPS(60)
|
||||
for !rl.WindowShouldClose() {
|
||||
rl.UpdateCamera(&cam, rl.CameraOrbital)
|
||||
p.UpadteByCamera(cam.Position)
|
||||
rl.BeginDrawing()
|
||||
rl.DrawFPS(10, 20)
|
||||
rl.ClearBackground(rl.Gray)
|
||||
rl.BeginMode3D(cam)
|
||||
rl.DrawModel(car, rl.Vector3{0, 0.01, 0}, 0.25, rl.RayWhite)
|
||||
rl.DrawModel(plane, rl.Vector3{0, 0, 0}, 5, rl.RayWhite)
|
||||
l.DrawSpherelight(&l1)
|
||||
l.DrawSpherelight(&l2)
|
||||
l.DrawSpherelight(&l3)
|
||||
l.DrawSpherelight(&l4)
|
||||
rl.EndMode3D()
|
||||
rl.EndDrawing()
|
||||
}
|
||||
rl.CloseWindow()
|
||||
}
|
||||
BIN
examples/shaders/pbr/models/old_car_d.png
Normal file
BIN
examples/shaders/pbr/models/old_car_d.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 1.6 MiB |
BIN
examples/shaders/pbr/models/old_car_e.png
Normal file
BIN
examples/shaders/pbr/models/old_car_e.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 1.7 KiB |
BIN
examples/shaders/pbr/models/old_car_mra.png
Normal file
BIN
examples/shaders/pbr/models/old_car_mra.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 1.1 MiB |
BIN
examples/shaders/pbr/models/old_car_n.png
Normal file
BIN
examples/shaders/pbr/models/old_car_n.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 1.2 MiB |
BIN
examples/shaders/pbr/models/old_car_new.glb
Normal file
BIN
examples/shaders/pbr/models/old_car_new.glb
Normal file
Binary file not shown.
BIN
examples/shaders/pbr/models/plane.glb
Normal file
BIN
examples/shaders/pbr/models/plane.glb
Normal file
Binary file not shown.
BIN
examples/shaders/pbr/models/road_a.png
Normal file
BIN
examples/shaders/pbr/models/road_a.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 623 KiB |
BIN
examples/shaders/pbr/models/road_mra.png
Normal file
BIN
examples/shaders/pbr/models/road_mra.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 657 KiB |
BIN
examples/shaders/pbr/models/road_n.png
Normal file
BIN
examples/shaders/pbr/models/road_n.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 645 KiB |
218
examples/shaders/pbr/pbr.go
Normal file
218
examples/shaders/pbr/pbr.go
Normal file
|
|
@ -0,0 +1,218 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
rl "github.com/gen2brain/raylib-go/raylib"
|
||||
)
|
||||
|
||||
const (
|
||||
LIGHT_DIRECTIONAL int32 = iota
|
||||
LIGHT_POINT
|
||||
LIGHT_SPOT
|
||||
)
|
||||
|
||||
type light struct {
|
||||
Enabled int32
|
||||
Type int32
|
||||
Target rl.Vector3
|
||||
Position rl.Vector3
|
||||
Color [4]float32
|
||||
Intensity float32
|
||||
// Shader light parameters locations
|
||||
enabledLoc int32
|
||||
typeLoc int32
|
||||
targetLoc int32
|
||||
positionLoc int32
|
||||
colorLoc int32
|
||||
intensityLoc int32
|
||||
}
|
||||
|
||||
type PhysicRender struct {
|
||||
Shader *rl.Shader
|
||||
combineStatus bool
|
||||
}
|
||||
|
||||
// make light and pbr Shader
|
||||
func (ph *PhysicRender) Init() {
|
||||
|
||||
if !ph.combineStatus {
|
||||
ph.configShader()
|
||||
}
|
||||
|
||||
ph.Shader.UpdateLocation(rl.ShaderLocMapAlbedo, rl.GetShaderLocation(*ph.Shader, "albedoMap"))
|
||||
ph.Shader.UpdateLocation(rl.ShaderLocMapMetalness, rl.GetShaderLocation(*ph.Shader, "mraMap"))
|
||||
ph.Shader.UpdateLocation(rl.ShaderLocMapNormal, rl.GetShaderLocation(*ph.Shader, "normalMap"))
|
||||
ph.Shader.UpdateLocation(rl.ShaderLocMapEmission, rl.GetShaderLocation(*ph.Shader, "emissiveMap"))
|
||||
ph.Shader.UpdateLocation(12, rl.GetShaderLocation(*ph.Shader, "albedoColor"))
|
||||
ph.Shader.UpdateLocation(rl.ShaderLocVectorView, rl.GetShaderLocation(*ph.Shader, "viewPos"))
|
||||
|
||||
ambientColor := rl.Color{R: 122, G: 36, B: 26, A: 100}
|
||||
ambientColorNormalized := rl.NewVector3(float32(ambientColor.R)/255.0, float32(ambientColor.G)/255.0, float32(ambientColor.B)/255.0)
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "ambientColor"), []float32{ambientColorNormalized.X, ambientColorNormalized.Y, ambientColorNormalized.Z}, rl.ShaderUniformVec3)
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "ambient"), []float32{float32(0.03)}, rl.ShaderUniformFloat)
|
||||
|
||||
lightCountLoc := rl.GetShaderLocation(*ph.Shader, "numOfLights")
|
||||
rl.SetShaderValue(*ph.Shader, lightCountLoc, generiteIntForGlsl(int32(MaxLights)), rl.ShaderUniformInt)
|
||||
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) UpadteByCamera(pos rl.Vector3) {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "viewPos"), []float32{pos.X, pos.Y, pos.Z}, rl.ShaderUniformVec3)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) CreateLight(typeLight int32, position rl.Vector3, target rl.Vector3, color rl.Color, intensity float32) light {
|
||||
light := light{}
|
||||
if lightCount < MaxLights {
|
||||
light.Enabled = 1
|
||||
light.Position = position
|
||||
light.Type = typeLight
|
||||
light.Target = target
|
||||
light.Color[0] = float32(float32(color.R) / 255.0)
|
||||
light.Color[1] = float32(float32(color.G) / 255.0)
|
||||
light.Color[2] = float32(float32(color.B) / 255.0)
|
||||
light.Color[3] = float32(float32(color.A) / 255.0)
|
||||
light.Intensity = intensity
|
||||
// NOTE: Shader parameters names for lights must match the requested ones
|
||||
light.enabledLoc = rl.GetShaderLocation(*ph.Shader, fmt.Sprintf("lights[%d].enabled", lightCount))
|
||||
light.positionLoc = rl.GetShaderLocation(*ph.Shader, fmt.Sprintf("lights[%d].position", lightCount))
|
||||
light.colorLoc = rl.GetShaderLocation(*ph.Shader, fmt.Sprintf("lights[%d].color", lightCount))
|
||||
light.intensityLoc = rl.GetShaderLocation(*ph.Shader, fmt.Sprintf("lights[%d].intensity", lightCount))
|
||||
light.typeLoc = rl.GetShaderLocation(*ph.Shader, fmt.Sprintf("lights[%d].type", lightCount))
|
||||
//light.targetLoc = rl.GetShaderLocation(ph.Shader, fmt.Sprintf("lights[%d].target", lightCount))
|
||||
|
||||
ph.UpdateLight(*ph.Shader, light)
|
||||
|
||||
lightCount++
|
||||
|
||||
}
|
||||
|
||||
return light
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) UpdateLight(Shader rl.Shader, light light) {
|
||||
rl.SetShaderValue(Shader, light.enabledLoc, generiteIntForGlsl(light.Enabled), rl.ShaderUniformInt)
|
||||
rl.SetShaderValue(Shader, light.positionLoc, []float32{light.Position.X, light.Position.Y, light.Position.Z}, rl.ShaderUniformVec3)
|
||||
rl.SetShaderValue(Shader, light.colorLoc, []float32{light.Color[0], light.Color[1], light.Color[2], light.Color[3]}, rl.ShaderUniformVec4)
|
||||
rl.SetShaderValue(Shader, light.intensityLoc, []float32{light.Intensity}, rl.ShaderUniformFloat)
|
||||
rl.SetShaderValue(Shader, light.typeLoc, generiteIntForGlsl(light.Type), rl.ShaderUniformInt)
|
||||
//rl.SetShaderValue(Shader, light.targetLoc,[]float32{light.Target.X, light.Target.Y, light.Target.Z}, rl.ShaderUniformVec3)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) MaxLights(value int) {
|
||||
MaxLights = value
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) TextureMapAlbedo(modelMaterials *rl.Material, texture rl.Texture2D) {
|
||||
rl.SetMaterialTexture(modelMaterials, rl.MapAlbedo, texture)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) TextureMapMetalness(modelMaterials *rl.Material, texture rl.Texture2D) {
|
||||
rl.SetMaterialTexture(modelMaterials, rl.MapMetalness, texture)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) TextureMapRoughness(modelMaterials *rl.Material, texture rl.Texture2D) {
|
||||
rl.SetMaterialTexture(modelMaterials, rl.MapRoughness, texture)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) TextureMapNormal(modelMaterials *rl.Material, texture rl.Texture2D) {
|
||||
rl.SetMaterialTexture(modelMaterials, rl.MapNormal, texture)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) TextureMapOcclusion(modelMaterials *rl.Material, texture rl.Texture2D) {
|
||||
rl.SetMaterialTexture(modelMaterials, rl.MapOcclusion, texture)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) DrawSphereLoctionLight(li light, color rl.Color) {
|
||||
rl.DrawSphereEx(li.Position, 0.2, 8, 8, color)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) AlbedoColorModel(model *rl.Model, color rl.Color) {
|
||||
model.GetMaterials()[0].GetMap(rl.MapAlbedo).Color = color
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) EmissiveColor(color rl.Color) {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "emissiveColor"), []float32{float32(color.R), float32(color.G), float32(color.B), float32(color.A)}, rl.ShaderUniformVec4)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) NormalValue(value float32) {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "emissiveColor"), []float32{value}, rl.ShaderUniformFloat)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) MetallicValue(value float32) {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "metallicValue"), []float32{value}, rl.ShaderUniformFloat)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) RoughnessValue(value float32) {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "roughnessValue"), []float32{value}, rl.ShaderUniformFloat)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) AoValue(value float32) {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "aoValue"), []float32{value}, rl.ShaderUniformFloat)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) EmissivePower(value float32) {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "emissivePower"), []float32{value}, rl.ShaderUniformFloat)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) AmbientColor(colorAmbient rl.Vector3, ambientValue float32) {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "ambientColor"), []float32{colorAmbient.X, colorAmbient.Y, colorAmbient.Z}, rl.ShaderUniformVec3)
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "ambient"), []float32{ambientValue}, rl.ShaderUniformFloat)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) SetTiling(value rl.Vector2) {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "tiling"), []float32{value.X, value.Y}, rl.ShaderUniformVec2)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) SetOffset(value rl.Vector2) {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "offset"), []float32{value.X, value.Y}, rl.ShaderUniformVec2)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) SetTilingFlashlight(value rl.Vector2) {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "tilingFlashlight"), []float32{value.X, value.Y}, rl.ShaderUniformVec2)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) SetOffsetFlashlight(value rl.Vector2) {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "offsetFlashlight"), []float32{value.X, value.Y}, rl.ShaderUniformVec2)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) UseTexAlbedo() {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "useTexAlbedo"), generiteIntForGlsl(1), rl.ShaderUniformInt)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) UseTexNormal() {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "useTexNormal"), generiteIntForGlsl(1), rl.ShaderUniformInt)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) UseTexMRA() {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "useTexMRA"), generiteIntForGlsl(1), rl.ShaderUniformInt)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) UseTexEmissive() {
|
||||
rl.SetShaderValue(*ph.Shader, rl.GetShaderLocation(*ph.Shader, "useTexEmissive"), generiteIntForGlsl(1), rl.ShaderUniformInt)
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) configShader() {
|
||||
sh := rl.LoadShader("./pbr.vs", "./pbr.fs")
|
||||
ph.Shader = &sh
|
||||
}
|
||||
|
||||
// exce before init or set manually
|
||||
func (ph *PhysicRender) SetCombineShader(CombineShader *rl.Shader) {
|
||||
ph.combineStatus = true
|
||||
ph.Shader = CombineShader
|
||||
}
|
||||
|
||||
func (ph *PhysicRender) Unload() {
|
||||
rl.UnloadShader(*ph.Shader)
|
||||
}
|
||||
|
||||
func generiteIntForGlsl(value int32) []float32 {
|
||||
data := &reflect.SliceHeader{
|
||||
Data: uintptr(unsafe.Pointer(&value)),
|
||||
Len: 4,
|
||||
Cap: 4,
|
||||
}
|
||||
return *(*[]float32)(unsafe.Pointer(data))
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue