Merge branch 'master' of https://github.com/raysan5/raylib

BINDINGS.md

@@ -7,6 +7,7 @@ Some people ported raylib to other languages in form of bindings or wrappers to
 |  name              | raylib version  | language  | license    | repo                                                      |
 |:------------------:|:---------------:|:---------:|:----------:|-----------------------------------------------------------|
 | raylib             | **5.0** | [C/C++](https://en.wikipedia.org/wiki/C_(programming_language))    | Zlib | https://github.com/raysan5/raylib          |
+| raylib-beef        | **5.0** | [Beef](https://www.beeflang.org/)    | MIT | https://github.com/Starpelly/raylib-beef    |
 | raylib-boo         | 3.7     | [Boo](http://boo-language.github.io/)| MIT | https://github.com/Rabios/raylib-boo          |
 | Raylib-cs          | **4.5** | [C#](https://en.wikipedia.org/wiki/C_Sharp_(programming_language)) | Zlib | https://github.com/ChrisDill/Raylib-cs     |
 | Raylib-CsLo        | 4.2     | [C#](https://en.wikipedia.org/wiki/C_Sharp_(programming_language)) | MPL-2.0 | https://github.com/NotNotTech/Raylib-CsLo  |

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.5)
 project(raylib)
 
 # Avoid excessive expansion of variables in conditionals. In particular, if

examples/audio/audio_stream_effects.c

@@ -2,7 +2,7 @@
 *
 *   raylib [audio] example - Music stream processing effects
 *
-*   Example originally created with raylib 4.2, last time updated with raylib 4.2
+*   Example originally created with raylib 4.2, last time updated with raylib 5.0
 *
 *   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
 *   BSD-like license that allows static linking with closed source software
@@ -13,7 +13,7 @@
 
 #include "raylib.h"
 
-#include <stdlib.h>         // Required for: NULL
+#include <stdlib.h> // Required for: NULL
 
 // Required delay effect variables
 static float *delayBuffer = NULL;
@@ -149,13 +149,17 @@ static void AudioProcessEffectLPF(void *buffer, unsigned int frames)
     static const float cutoff = 70.0f / 44100.0f; // 70 Hz lowpass filter
     const float k = cutoff / (cutoff + 0.1591549431f); // RC filter formula
 
+    // Converts the buffer data before using it
+    float *bufferData = (float *)buffer;
     for (unsigned int i = 0; i < frames*2; i += 2)
     {
-        float l = ((float *)buffer)[i], r = ((float *)buffer)[i + 1];
+        const float l = bufferData[i];
+        const float r = bufferData[i + 1];
+
         low[0] += k * (l - low[0]);
         low[1] += k * (r - low[1]);
-        ((float *)buffer)[i] = low[0];
-        ((float *)buffer)[i + 1] = low[1];
+        bufferData[i] = low[0];
+        bufferData[i + 1] = low[1];
     }
 }
 

examples/core/core_vr_simulator.c

@@ -39,7 +39,6 @@ int main(void)
         .vResolution = 1200,                 // Vertical resolution in pixels
         .hScreenSize = 0.133793f,            // Horizontal size in meters
         .vScreenSize = 0.0669f,              // Vertical size in meters
-        .vScreenCenter = 0.04678f,           // Screen center in meters
         .eyeToScreenDistance = 0.041f,       // Distance between eye and display in meters
         .lensSeparationDistance = 0.07f,     // Lens separation distance in meters
         .interpupillaryDistance = 0.07f,     // IPD (distance between pupils) in meters

examples/shaders/resources/shaders/glsl100/pbr.fs

@@ -0,0 +1,156 @@
+#version 100
+
+precision mediump float;
+
+#define MAX_LIGHTS              4
+#define LIGHT_DIRECTIONAL       0
+#define LIGHT_POINT             1
+#define PI 3.14159265358979323846
+
+struct Light {
+    int enabled;
+    int type;
+    vec3 position;
+    vec3 target;
+    vec4 color;
+    float intensity;
+};
+
+// Input vertex attributes (from vertex shader)
+varying in vec3 fragPosition;
+varying in vec2 fragTexCoord;
+varying in vec4 fragColor;
+varying in vec3 fragNormal;
+varying in vec4 shadowPos;
+varying in mat3 TBN;
+
+
+// Input uniform values
+uniform int numOfLights;
+uniform sampler2D albedoMap;
+uniform sampler2D mraMap;
+uniform sampler2D normalMap;
+uniform sampler2D emissiveMap; // r: Hight g:emissive
+
+uniform vec2 tiling;
+uniform vec2 offset;
+
+uniform int useTexAlbedo;
+uniform int useTexNormal;
+uniform int useTexMRA;
+uniform int useTexEmissive;
+
+uniform vec4  albedoColor;
+uniform vec4  emissiveColor;
+uniform float normalValue;
+uniform float metallicValue;
+uniform float roughnessValue;
+uniform float aoValue;
+uniform float emissivePower;
+
+// Input lighting values
+uniform Light lights[MAX_LIGHTS];
+uniform vec3 viewPos;
+
+uniform vec3 ambientColor;
+uniform float ambient;
+
+// refl in range  0 to 1
+// returns base reflectivity to 1
+// incrase reflectivity when surface view at larger angle
+vec3 schlickFresnel(float hDotV,vec3 refl)
+{
+        return refl + (1.0 - refl) * pow(1.0 - hDotV,5.0);
+}
+
+float ggxDistribution(float nDotH,float roughness)
+{
+        float a = roughness * roughness * roughness * roughness;
+        float d = nDotH * nDotH * (a - 1.0) + 1.0;
+        d = PI * d * d;
+        return a / max(d,0.0000001);
+}
+
+float geomSmith(float nDotV,float nDotL,float roughness)
+{
+        float r = roughness + 1.0;
+        float k = r * r / 8.0;
+        float ik = 1.0 - k;
+        float ggx1 = nDotV / (nDotV * ik + k);
+        float ggx2 = nDotL / (nDotL * ik + k);
+        return ggx1 * ggx2;
+}
+
+vec3 pbr(){
+        vec3 albedo = texture2D(albedoMap,vec2(fragTexCoord.x*tiling.x+offset.x,fragTexCoord.y*tiling.y+offset.y)).rgb;
+        albedo = vec3(albedoColor.x*albedo.x,albedoColor.y*albedo.y,albedoColor.z*albedo.z);
+        float metallic = clamp(metallicValue,0.0,1.0);
+        float roughness = clamp(roughnessValue,0.0,1.0);
+        float ao = clamp(aoValue,0.0,1.0);
+        if(useTexMRA == 1) {
+            vec4 mra = texture2D(mraMap, vec2(fragTexCoord.x * tiling.x + offset.x, fragTexCoord.y * tiling.y + offset.y));
+            metallic = clamp(mra.r+metallicValue,0.04,1.0);
+            roughness = clamp(mra.g+roughnessValue,0.04,1.0);
+            ao = (mra.b+aoValue)*0.5;
+        }
+
+
+
+        vec3 N = normalize(fragNormal);
+        if(useTexNormal == 1) {
+            N = texture2D(normalMap, vec2(fragTexCoord.x * tiling.x + offset.y, fragTexCoord.y * tiling.y + offset.y)).rgb;
+            N = normalize(N * 2.0 - 1.0);
+            N = normalize(N * TBN);
+        }
+        
+        vec3 V = normalize(viewPos - fragPosition);
+        
+        vec3 e = vec3(0);
+        e = (texture2D(emissiveMap, vec2(fragTexCoord.x*tiling.x+offset.x, fragTexCoord.y*tiling.y+offset.y)).rgb).g * emissiveColor.rgb*emissivePower * float(useTexEmissive);
+        
+        //return N;//vec3(metallic,metallic,metallic);
+        //if  dia-electric use base reflectivity of 0.04 otherwise ut is a metal use albedo as base reflectivity
+        vec3 baseRefl = mix(vec3(0.04),albedo.rgb,metallic);
+        vec3 Lo = vec3(0.0);  // acumulate lighting lum
+
+        for(int i=0;i<numOfLights;++i){
+
+            vec3 L = normalize(lights[i].position - fragPosition);  // calc light vector
+            vec3 H = normalize(V + L);                              // calc halfway bisecting vector
+            float dist = length(lights[i].position - fragPosition); // calc distance to light
+            float attenuation = 1.0 / (dist * dist * 0.23);                // calc attenuation
+            vec3 radiance = lights[i].color.rgb * lights[i].intensity * attenuation;         // calc input radiance,light energy comming in
+
+            //Cook-Torrance BRDF distribution function
+            float nDotV = max(dot(N,V),0.0000001);
+            float nDotL = max(dot(N,L),0.0000001);
+            float hDotV = max(dot(H,V),0.0);
+            float nDotH = max(dot(N,H),0.0);
+            float D = ggxDistribution(nDotH,roughness); // larger the more micro-facets aligned to H
+            float G = geomSmith(nDotV,nDotL,roughness); // smaller the more micro-facets shadow
+            vec3 F = schlickFresnel(hDotV, baseRefl);  // fresnel proportion of specular reflectance
+
+            vec3 spec = (D * G * F) / (4.0 * nDotV * nDotL);
+            // difuse and spec light can't be above 1.0
+            // kD = 1.0 - kS  diffuse component is equal 1.0 - spec comonent
+            vec3 kD = vec3(1.0) - F;
+            //mult kD by the inverse of metallnes , only non-metals should have diffuse light
+            kD *= 1.0 - metallic;
+            Lo += ((kD * albedo.rgb / PI + spec) * radiance * nDotL)*float(lights[i].enabled); // angle of light has impact on result
+        }
+        vec3 ambient_final = (ambientColor + albedo)* ambient * 0.5;
+        return ambient_final+Lo*ao+e;
+}
+
+void main()
+{
+       vec3 color = pbr();
+        
+        //HDR tonemapping
+        color = pow(color,color + vec3(1.0));
+        //gamma correction
+        color = pow(color,vec3(1.0/2.2));
+
+        gl_FragColor = vec4(color,1.0);
+        
+}

examples/shaders/resources/shaders/glsl100/pbr.vs

@@ -0,0 +1,75 @@
+#version 100
+
+// Input vertex attributes
+attribute  vec3 vertexPosition;
+attribute  vec2 vertexTexCoord;
+attribute  vec3 vertexNormal;
+attribute  vec3 vertexTangent;
+attribute  vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvp;
+uniform mat4 matModel;
+uniform mat4 matNormal;
+uniform vec3 lightPos;
+uniform vec4 difColor;
+
+// Output vertex attributes (to fragment shader)
+varying vec3 fragPosition;
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+varying vec3 fragNormal;
+varying mat3 TBN;
+
+const float normalOffset = 0.1;
+
+// https://github.com/glslify/glsl-inverse
+mat3 inverse(mat3 m)
+{
+  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];
+  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];
+  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];
+
+  float b01 = a22*a11 - a12*a21;
+  float b11 = -a22*a10 + a12*a20;
+  float b21 = a21*a10 - a11*a20;
+
+  float det = a00*b01 + a01*b11 + a02*b21;
+
+  return mat3(b01, (-a22*a01 + a02*a21), (a12*a01 - a02*a11),
+              b11, (a22*a00 - a02*a20), (-a12*a00 + a02*a10),
+              b21, (-a21*a00 + a01*a20), (a11*a00 - a01*a10))/det;
+}
+
+// https://github.com/glslify/glsl-transpose
+mat3 transpose(mat3 m)
+{
+  return mat3(m[0][0], m[1][0], m[2][0],
+              m[0][1], m[1][1], m[2][1],
+              m[0][2], m[1][2], m[2][2]);
+}
+
+void main()
+{
+
+    // calc binormal from vertex normal and tangent
+    vec3 vertexBinormal = cross(vertexNormal, vertexTangent);
+    // calc fragment normal based on normal transformations
+    mat3 normalMatrix = transpose(inverse(mat3(matModel)));
+    // calc fragment position based on model transformations
+
+    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0));
+
+    fragTexCoord = vertexTexCoord*2.0;
+
+    fragNormal = normalize(normalMatrix*vertexNormal);
+    vec3 fragTangent = normalize(normalMatrix*vertexTangent);
+    fragTangent = normalize(fragTangent - dot(fragTangent, fragNormal)*fragNormal);
+    vec3 fragBinormal = normalize(normalMatrix*vertexBinormal);
+    fragBinormal = cross(fragNormal, fragTangent);
+
+    TBN = transpose(mat3(fragTangent, fragBinormal, fragNormal));
+
+    // Calculate final vertex position
+    gl_Position = mvp * vec4(vertexPosition, 1.0);
+}

examples/shaders/resources/shaders/glsl120/pbr.fs

@@ -0,0 +1,156 @@
+#version 120
+
+precision mediump float;
+
+#define MAX_LIGHTS              4
+#define LIGHT_DIRECTIONAL       0
+#define LIGHT_POINT             1
+#define PI 3.14159265358979323846
+
+struct Light {
+    int enabled;
+    int type;
+    vec3 position;
+    vec3 target;
+    vec4 color;
+    float intensity;
+};
+
+// Input vertex attributes (from vertex shader)
+varying in vec3 fragPosition;
+varying in vec2 fragTexCoord;
+varying in vec4 fragColor;
+varying in vec3 fragNormal;
+varying in vec4 shadowPos;
+varying in mat3 TBN;
+
+
+// Input uniform values
+uniform int numOfLights;
+uniform sampler2D albedoMap;
+uniform sampler2D mraMap;
+uniform sampler2D normalMap;
+uniform sampler2D emissiveMap; // r: Hight g:emissive
+
+uniform vec2 tiling;
+uniform vec2 offset;
+
+uniform int useTexAlbedo;
+uniform int useTexNormal;
+uniform int useTexMRA;
+uniform int useTexEmissive;
+
+uniform vec4  albedoColor;
+uniform vec4  emissiveColor;
+uniform float normalValue;
+uniform float metallicValue;
+uniform float roughnessValue;
+uniform float aoValue;
+uniform float emissivePower;
+
+// Input lighting values
+uniform Light lights[MAX_LIGHTS];
+uniform vec3 viewPos;
+
+uniform vec3 ambientColor;
+uniform float ambient;
+
+// refl in range  0 to 1
+// returns base reflectivity to 1
+// incrase reflectivity when surface view at larger angle
+vec3 schlickFresnel(float hDotV,vec3 refl)
+{
+        return refl + (1.0 - refl) * pow(1.0 - hDotV,5.0);
+}
+
+float ggxDistribution(float nDotH,float roughness)
+{
+        float a = roughness * roughness * roughness * roughness;
+        float d = nDotH * nDotH * (a - 1.0) + 1.0;
+        d = PI * d * d;
+        return a / max(d,0.0000001);
+}
+
+float geomSmith(float nDotV,float nDotL,float roughness)
+{
+        float r = roughness + 1.0;
+        float k = r * r / 8.0;
+        float ik = 1.0 - k;
+        float ggx1 = nDotV / (nDotV * ik + k);
+        float ggx2 = nDotL / (nDotL * ik + k);
+        return ggx1 * ggx2;
+}
+
+vec3 pbr(){
+        vec3 albedo = texture2D(albedoMap,vec2(fragTexCoord.x*tiling.x+offset.x,fragTexCoord.y*tiling.y+offset.y)).rgb;
+        albedo = vec3(albedoColor.x*albedo.x,albedoColor.y*albedo.y,albedoColor.z*albedo.z);
+        float metallic = clamp(metallicValue,0.0,1.0);
+        float roughness = clamp(roughnessValue,0.0,1.0);
+        float ao = clamp(aoValue,0.0,1.0);
+        if(useTexMRA == 1) {
+            vec4 mra = texture2D(mraMap, vec2(fragTexCoord.x * tiling.x + offset.x, fragTexCoord.y * tiling.y + offset.y));
+            metallic = clamp(mra.r+metallicValue,0.04,1.0);
+            roughness = clamp(mra.g+roughnessValue,0.04,1.0);
+            ao = (mra.b+aoValue)*0.5;
+        }
+
+
+
+        vec3 N = normalize(fragNormal);
+        if(useTexNormal == 1) {
+            N = texture2D(normalMap, vec2(fragTexCoord.x * tiling.x + offset.y, fragTexCoord.y * tiling.y + offset.y)).rgb;
+            N = normalize(N * 2.0 - 1.0);
+            N = normalize(N * TBN);
+        }
+        
+        vec3 V = normalize(viewPos - fragPosition);
+        
+        vec3 e = vec3(0);
+        e = (texture2D(emissiveMap, vec2(fragTexCoord.x*tiling.x+offset.x, fragTexCoord.y*tiling.y+offset.y)).rgb).g * emissiveColor.rgb*emissivePower * float(useTexEmissive);
+        
+        //return N;//vec3(metallic,metallic,metallic);
+        //if  dia-electric use base reflectivity of 0.04 otherwise ut is a metal use albedo as base reflectivity
+        vec3 baseRefl = mix(vec3(0.04),albedo.rgb,metallic);
+        vec3 Lo = vec3(0.0);  // acumulate lighting lum
+
+        for(int i=0;i<numOfLights;++i){
+
+            vec3 L = normalize(lights[i].position - fragPosition);  // calc light vector
+            vec3 H = normalize(V + L);                              // calc halfway bisecting vector
+            float dist = length(lights[i].position - fragPosition); // calc distance to light
+            float attenuation = 1.0 / (dist * dist * 0.23);                // calc attenuation
+            vec3 radiance = lights[i].color.rgb * lights[i].intensity * attenuation;         // calc input radiance,light energy comming in
+
+            //Cook-Torrance BRDF distribution function
+            float nDotV = max(dot(N,V),0.0000001);
+            float nDotL = max(dot(N,L),0.0000001);
+            float hDotV = max(dot(H,V),0.0);
+            float nDotH = max(dot(N,H),0.0);
+            float D = ggxDistribution(nDotH,roughness); // larger the more micro-facets aligned to H
+            float G = geomSmith(nDotV,nDotL,roughness); // smaller the more micro-facets shadow
+            vec3 F = schlickFresnel(hDotV, baseRefl);  // fresnel proportion of specular reflectance
+
+            vec3 spec = (D * G * F) / (4.0 * nDotV * nDotL);
+            // difuse and spec light can't be above 1.0
+            // kD = 1.0 - kS  diffuse component is equal 1.0 - spec comonent
+            vec3 kD = vec3(1.0) - F;
+            //mult kD by the inverse of metallnes , only non-metals should have diffuse light
+            kD *= 1.0 - metallic;
+            Lo += ((kD * albedo.rgb / PI + spec) * radiance * nDotL)*float(lights[i].enabled); // angle of light has impact on result
+        }
+        vec3 ambient_final = (ambientColor + albedo)* ambient * 0.5;
+        return ambient_final+Lo*ao+e;
+}
+
+void main()
+{
+       vec3 color = pbr();
+        
+        //HDR tonemapping
+        color = pow(color,color + vec3(1.0));
+        //gamma correction
+        color = pow(color,vec3(1.0/2.2));
+
+        gl_FragColor = vec4(color,1.0);
+        
+}

examples/shaders/resources/shaders/glsl120/pbr.vs

@@ -0,0 +1,75 @@
+#version 120
+
+// Input vertex attributes
+attribute  vec3 vertexPosition;
+attribute  vec2 vertexTexCoord;
+attribute  vec3 vertexNormal;
+attribute  vec3 vertexTangent;
+attribute  vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvp;
+uniform mat4 matModel;
+uniform mat4 matNormal;
+uniform vec3 lightPos;
+uniform vec4 difColor;
+
+// Output vertex attributes (to fragment shader)
+varying vec3 fragPosition;
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+varying vec3 fragNormal;
+varying mat3 TBN;
+
+const float normalOffset = 0.1;
+
+// https://github.com/glslify/glsl-inverse
+mat3 inverse(mat3 m)
+{
+  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];
+  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];
+  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];
+
+  float b01 = a22*a11 - a12*a21;
+  float b11 = -a22*a10 + a12*a20;
+  float b21 = a21*a10 - a11*a20;
+
+  float det = a00*b01 + a01*b11 + a02*b21;
+
+  return mat3(b01, (-a22*a01 + a02*a21), (a12*a01 - a02*a11),
+              b11, (a22*a00 - a02*a20), (-a12*a00 + a02*a10),
+              b21, (-a21*a00 + a01*a20), (a11*a00 - a01*a10))/det;
+}
+
+// https://github.com/glslify/glsl-transpose
+mat3 transpose(mat3 m)
+{
+  return mat3(m[0][0], m[1][0], m[2][0],
+              m[0][1], m[1][1], m[2][1],
+              m[0][2], m[1][2], m[2][2]);
+}
+
+void main()
+{
+
+    // calc binormal from vertex normal and tangent
+    vec3 vertexBinormal = cross(vertexNormal, vertexTangent);
+    // calc fragment normal based on normal transformations
+    mat3 normalMatrix = transpose(inverse(mat3(matModel)));
+    // calc fragment position based on model transformations
+
+    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0));
+
+    fragTexCoord = vertexTexCoord*2.0;
+
+    fragNormal = normalize(normalMatrix*vertexNormal);
+    vec3 fragTangent = normalize(normalMatrix*vertexTangent);
+    fragTangent = normalize(fragTangent - dot(fragTangent, fragNormal)*fragNormal);
+    vec3 fragBinormal = normalize(normalMatrix*vertexBinormal);
+    fragBinormal = cross(fragNormal, fragTangent);
+
+    TBN = transpose(mat3(fragTangent, fragBinormal, fragNormal));
+
+    // Calculate final vertex position
+    gl_Position = mvp * vec4(vertexPosition, 1.0);
+}

examples/shaders/resources/shaders/glsl330/pbr.fs

@@ -0,0 +1,159 @@
+#version 330
+
+#define MAX_LIGHTS              4
+#define LIGHT_DIRECTIONAL       0
+#define LIGHT_POINT             1
+#define PI 3.14159265358979323846
+
+struct Light {
+    int enabled;
+    int type;
+    vec3 position;
+    vec3 target;
+    vec4 color;
+    float intensity;
+};
+
+// Input vertex attributes (from vertex shader)
+in vec3 fragPosition;
+in vec2 fragTexCoord;
+in vec4 fragColor;
+in vec3 fragNormal;
+in vec4 shadowPos;
+in mat3 TBN;
+
+// Output fragment color
+out vec4 finalColor;
+// Input uniform values
+
+uniform int numOfLights;
+uniform sampler2D albedoMap;
+uniform sampler2D mraMap;
+uniform sampler2D normalMap;
+uniform sampler2D emissiveMap; // r: Hight g:emissive
+
+uniform vec2 tiling;
+uniform vec2 offset;
+
+uniform int useTexAlbedo;
+uniform int useTexNormal;
+uniform int useTexMRA;
+uniform int useTexEmissive;
+
+uniform vec4  albedoColor;
+uniform vec4  emissiveColor;
+uniform float normalValue;
+uniform float metallicValue;
+uniform float roughnessValue;
+uniform float aoValue;
+uniform float emissivePower;
+
+// Input lighting values
+uniform Light lights[MAX_LIGHTS];
+uniform vec3 viewPos;
+
+uniform vec3 ambientColor;
+uniform float ambient;
+
+// refl in range  0 to 1
+// returns base reflectivity to 1
+// incrase reflectivity when surface view at larger angle
+vec3 schlickFresnel(float hDotV,vec3 refl)
+{
+        return refl + (1.0 - refl) * pow(1.0 - hDotV,5.0);
+}
+
+float ggxDistribution(float nDotH,float roughness)
+{
+        float a = roughness * roughness * roughness * roughness;
+        float d = nDotH * nDotH * (a - 1.0) + 1.0;
+        d = PI * d * d;
+        return a / max(d,0.0000001);
+}
+
+float geomSmith(float nDotV,float nDotL,float roughness)
+{
+        float r = roughness + 1.0;
+        float k = r * r / 8.0;
+        float ik = 1.0 - k;
+        float ggx1 = nDotV / (nDotV * ik + k);
+        float ggx2 = nDotL / (nDotL * ik + k);
+        return ggx1 * ggx2;
+}
+
+vec3 pbr(){
+        vec3 albedo = texture(albedoMap,vec2(fragTexCoord.x*tiling.x+offset.x,fragTexCoord.y*tiling.y+offset.y)).rgb;
+        albedo = vec3(albedoColor.x*albedo.x,albedoColor.y*albedo.y,albedoColor.z*albedo.z);
+        float metallic = clamp(metallicValue,0.0,1.0);
+        float roughness = clamp(roughnessValue,0.0,1.0);
+        float ao = clamp(aoValue,0.0,1.0);
+        if(useTexMRA == 1) {
+            vec4 mra = texture(mraMap, vec2(fragTexCoord.x * tiling.x + offset.x, fragTexCoord.y * tiling.y + offset.y)) * useTexMRA;
+            metallic = clamp(mra.r+metallicValue,0.04,1.0);
+            roughness = clamp(mra.g+roughnessValue,0.04,1.0);
+            ao = (mra.b+aoValue)*0.5;
+        }
+
+
+
+        vec3 N = normalize(fragNormal);
+        if(useTexNormal == 1) {
+            N = texture(normalMap, vec2(fragTexCoord.x * tiling.x + offset.y, fragTexCoord.y * tiling.y + offset.y)).rgb;
+            N = normalize(N * 2.0 - 1.0);
+            N = normalize(N * TBN);
+        }
+
+        vec3 V = normalize(viewPos - fragPosition);
+
+        vec3 e = vec3(0);
+        e = (texture(emissiveMap, vec2(fragTexCoord.x*tiling.x+offset.x, fragTexCoord.y*tiling.y+offset.y)).rgb).g * emissiveColor.rgb*emissivePower * useTexEmissive;
+
+
+
+
+
+        //return N;//vec3(metallic,metallic,metallic);
+        //if  dia-electric use base reflectivity of 0.04 otherwise ut is a metal use albedo as base reflectivity
+        vec3 baseRefl = mix(vec3(0.04),albedo.rgb,metallic);
+        vec3 Lo = vec3(0.0);  // acumulate lighting lum
+
+        for(int i=0;i<numOfLights;++i){
+
+            vec3 L = normalize(lights[i].position - fragPosition);  // calc light vector
+            vec3 H = normalize(V + L);                              // calc halfway bisecting vector
+            float dist = length(lights[i].position - fragPosition); // calc distance to light
+            float attenuation = 1.0 / (dist * dist * 0.23);                // calc attenuation
+            vec3 radiance = lights[i].color.rgb * lights[i].intensity * attenuation;         // calc input radiance,light energy comming in
+
+            //Cook-Torrance BRDF distribution function
+            float nDotV = max(dot(N,V),0.0000001);
+            float nDotL = max(dot(N,L),0.0000001);
+            float hDotV = max(dot(H,V),0.0);
+            float nDotH = max(dot(N,H),0.0);
+            float D = ggxDistribution(nDotH,roughness); // larger the more micro-facets aligned to H
+            float G = geomSmith(nDotV,nDotL,roughness); // smaller the more micro-facets shadow
+            vec3 F = schlickFresnel(hDotV, baseRefl);  // fresnel proportion of specular reflectance
+
+            vec3 spec = (D * G * F) / (4.0 * nDotV * nDotL);
+            // difuse and spec light can't be above 1.0
+            // kD = 1.0 - kS  diffuse component is equal 1.0 - spec comonent
+            vec3 kD = vec3(1.0) - F;
+            //mult kD by the inverse of metallnes , only non-metals should have diffuse light
+            kD *= 1.0 - metallic;
+            Lo += ((kD * albedo.rgb / PI + spec) * radiance * nDotL)*lights[i].enabled; // angle of light has impact on result
+        }
+        vec3 ambient_final = (ambientColor + albedo)* ambient * 0.5;
+        return ambient_final+Lo*ao+e;
+}
+
+void main()
+{
+       vec3 color = pbr();
+
+        //HDR tonemapping
+        color = pow(color,color + vec3(1.0));
+        //gamma correction
+        color = pow(color,vec3(1.0/2.2));
+
+        finalColor = vec4(color,1.0);
+}

examples/shaders/resources/shaders/glsl330/pbr.vs

@@ -0,0 +1,49 @@
+#version 330
+
+// Input vertex attributes
+in vec3 vertexPosition;
+in vec2 vertexTexCoord;
+in vec3 vertexNormal;
+in vec3 vertexTangent;
+in vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvp;
+uniform mat4 matModel;
+uniform mat4 matNormal;
+uniform vec3 lightPos;
+uniform vec4 difColor;
+
+// Output vertex attributes (to fragment shader)
+out vec3 fragPosition;
+out vec2 fragTexCoord;
+out vec4 fragColor;
+out vec3 fragNormal;
+out mat3 TBN;
+
+const float normalOffset = 0.1;
+
+void main()
+{
+
+    // calc binormal from vertex normal and tangent
+    vec3 vertexBinormal = cross(vertexNormal, vertexTangent);
+    // calc fragment normal based on normal transformations
+    mat3 normalMatrix = transpose(inverse(mat3(matModel)));
+    // calc fragment position based on model transformations
+
+    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0f));
+
+    fragTexCoord = vertexTexCoord*2.0;
+
+    fragNormal = normalize(normalMatrix*vertexNormal);
+    vec3 fragTangent = normalize(normalMatrix*vertexTangent);
+    fragTangent = normalize(fragTangent - dot(fragTangent, fragNormal)*fragNormal);
+    vec3 fragBinormal = normalize(normalMatrix*vertexBinormal);
+    fragBinormal = cross(fragNormal, fragTangent);
+
+    TBN = transpose(mat3(fragTangent, fragBinormal, fragNormal));
+
+    // Calculate final vertex position
+    gl_Position = mvp * vec4(vertexPosition, 1.0);
+}

examples/shaders/rpbr.h

@@ -0,0 +1,466 @@
+/**********************************************************************************************
+*
+*   raylib.pbr - Some useful functions to deal with pbr materials and lights
+*
+*   CONFIGURATION:
+*
+*   #define RPBR_IMPLEMENTATION
+*       Generates the implementation of the library into the included file.
+*       If not defined, the library is in header only mode and can be included in other headers
+*       or source files without problems. But only ONE file should hold the implementation.
+*
+*   LICENSE: zlib/libpng
+*
+*   Copyright (c) 2023-2024 Afan OLOVCIC (@_DevDad) 2017-2020 Victor Fisac(@victorfisac),Ramon Santamaria (@raysan5)
+*
+*   This software is provided "as-is", without any express or implied warranty. In no event
+*   will the authors be held liable for any damages arising from the use of this software.
+*
+*   Permission is granted to anyone to use this software for any purpose, including commercial
+*   applications, and to alter it and redistribute it freely, subject to the following restrictions:
+*
+*     1. The origin of this software must not be misrepresented; you must not claim that you
+*     wrote the original software. If you use this software in a product, an acknowledgment
+*     in the product documentation would be appreciated but is not required.
+*
+*     2. Altered source versions must be plainly marked as such, and must not be misrepresented
+*     as being the original software.
+*
+*     3. This notice may not be removed or altered from any source distribution.
+*
+**********************************************************************************************/
+
+#ifndef RPBR_H
+#define RPBR_H
+#include "raylib.h"
+
+
+//----------------------------------------------------------------------------------
+// Defines and Macros
+//----------------------------------------------------------------------------------
+#define MAX_LIGHTS  4        // Max dynamic lights supported by shader
+#define SHADER_LOC_MAP_MRA SHADER_LOC_MAP_METALNESS  //METALLIC, ROUGHNESS and AO
+#define SHADER_LOC_MAP_EMISSIVE  SHADER_LOC_MAP_HEIGHT     //EMISSIVE
+#define MATERIAL_MAP_MRA MATERIAL_MAP_METALNESS
+#define MATERIAL_MAP_EMISSIVE  MATERIAL_MAP_HEIGHT
+#define NULL 0
+#define COLOR_TO_ARRAY(c)
+
+typedef struct {
+    int enabled;
+    int type;
+    Vector3 position;
+    Vector3 target;
+    float color[4];
+    float intensity;
+
+    int enabledLoc;
+    int typeLoc;
+    int positionLoc;
+    int targetLoc;
+    int colorLoc;
+    int intensityLoc;
+} PBRLight;
+
+typedef enum {
+    LIGHT_DIRECTIONAL = 0,
+    LIGHT_POINT,
+    LIGHT_SPOT
+} PBRLightType;
+
+typedef struct{
+    Shader pbrShader;
+    Shader skyShader;
+    unsigned int cubemap;
+    unsigned int irradiance;
+    unsigned int prefilter;
+    unsigned int brdf;
+    int modelMatrixLoc;
+    int pbrViewLoc;
+    int skyViewLoc;
+    int skyResolutionLoc;
+} PBREnvironment;
+
+typedef enum{
+    PBR_COLOR_ALBEDO = 0,
+    PBR_COLOR_EMISSIVE
+}PBRColorType;
+
+typedef enum{
+    PBR_VEC2_TILING = 0,
+    PBR_VEC2_OFFSET
+}PBRVec2Type;
+
+typedef enum{
+    PBR_PARAM_NORMAL =0,
+    PBR_PARAM_METALLIC,
+    PBR_PARAM_ROUGHNESS,
+    PBR_PARAM_EMISSIVE,
+    PBR_PARAM_AO
+}PBRFloatType;
+
+typedef enum{
+    PBR_TEXTURE_ALBEDO = 0,
+    PBR_TEXTURE_NORMAL,
+    PBR_TEXTURE_MRA,
+    PBR_TEXTURE_EMISSIVE
+}PBRTexType;
+
+// Textures are moved to material from params to pack better and use less textures on the end
+// texture MRAE 4Channel R: Metallic G: Roughness B: A: Ambient Occlusion
+// texEmissive use just one channel, so we have 3 channels still to use if we need
+typedef struct {
+    Shader pbrShader;
+    float albedo[4];
+    float normal;
+    float metallic;
+    float roughness;
+    float ao;
+    float emissive[4];
+    float ambient[3];
+    float emissivePower;
+
+    Texture2D texAlbedo;
+    Texture2D texNormal;
+    Texture2D texMRA;//r: Metallic  g: Roughness b: AO a:Empty
+    Texture2D texEmissive; //Emissive Texture
+    // Using float4 to store tilling at 1st and 2nd position and offset at 3rd and 4th
+    float texTiling[2];
+    float texOffset[2];
+
+    int useTexAlbedo;
+    int useTexNormal;
+    int useTexMRA;
+    int useTexEmissive;
+
+    int albedoLoc;
+    int normalLoc;
+    int metallicLoc;
+    int roughnessLoc;
+    int aoLoc;
+    int emissiveColorLoc;
+    int emissivePowerLoc;
+
+    int texTilingLoc;
+    int texOffsetLoc;
+
+    int useTexAlbedoLoc;
+    int useTexNormalLoc;
+    int useTexMRAELoc;
+    int useTexEmissiveLoc;
+} PBRMaterial;
+
+typedef struct{
+    Model model;
+    PBRMaterial pbrMat;
+}PBRModel;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+//----------------------------------------------------------------------------------
+// Module Functions Declaration
+//----------------------------------------------------------------------------------
+
+// Create a light and get shader locations
+PBRLight PBRLightCreate(int type, Vector3 position, Vector3 target, Color color,float intensity, Shader shader);
+// Send light properties to shader
+void PBRLightUpdate(Shader shader, PBRLight light);
+
+//For now until we do real skylight
+void PBRSetAmbient(Shader shader, Color color, float intensity);
+
+PBRModel PBRModelLoad(const char *fileName);
+PBRModel PBRModelLoadFromMesh(Mesh mesh);
+
+void PBRLoadTextures(PBRMaterial *pbrMat,PBRTexType pbrTexType,const char *fileName);
+void UnloadPBRMaterial(PBRMaterial pbrMat);
+void PBRSetColor(PBRMaterial *pbrMat,PBRColorType pbrColorType,Color color);
+void PBRSetVec2(PBRMaterial *pbrMat,PBRVec2Type type,Vector2 value);
+void PBRSetFloat(PBRMaterial *pbrMat, PBRFloatType pbrParamType, float value);
+
+void PBRMaterialSetup( PBRMaterial *pbrMat,Shader pbrShader, PBREnvironment* environment);
+void PBRSetMaterial(PBRModel* model,PBRMaterial* pbrMat,int matIndex);
+void PBRDrawModel(PBRModel pbrModel, Vector3 position, float scale);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif //RPBR_H
+
+/***********************************************************************************
+*
+*   RPBR IMPLEMENTATION
+*
+************************************************************************************/
+
+#if defined(RPBR_IMPLEMENTATION)
+
+//----------------------------------------------------------------------------------
+// Global Variables Definition
+//----------------------------------------------------------------------------------
+static int lightsCount = 0;    // Current amount of created lights
+
+// Create a light and get shader locations
+PBRLight PBRLightCreate(int type, Vector3 position, Vector3 target, Color color,float intensity, Shader shader)
+{
+    PBRLight light = { 0 };
+
+    if (lightsCount < MAX_LIGHTS)
+    {
+        light.enabled = 1;
+        light.type = type;
+        light.position = position;
+        light.target = target;
+        light.color[0] = (float)color.r/(float)255;
+        light.color[1] = (float)color.g/(float)255;
+        light.color[2] = (float)color.b/(float)255;
+        light.color[3] = (float)color.a/(float)255;
+        light.intensity = intensity;
+        // NOTE: Lighting shader naming must be the provided ones
+        light.enabledLoc =  GetShaderLocation(shader, TextFormat("lights[%i].enabled", lightsCount));
+        light.typeLoc =     GetShaderLocation(shader, TextFormat("lights[%i].type", lightsCount));
+        light.positionLoc = GetShaderLocation(shader, TextFormat("lights[%i].position", lightsCount));
+        light.targetLoc =   GetShaderLocation(shader, TextFormat("lights[%i].target", lightsCount));
+        light.colorLoc =    GetShaderLocation(shader, TextFormat("lights[%i].color", lightsCount));
+        light.intensityLoc =    GetShaderLocation(shader, TextFormat("lights[%i].intensity", lightsCount));
+        PBRLightUpdate(shader, light);
+
+        lightsCount++;
+    }
+
+    return light;
+}
+
+// Send light properties to shader
+// NOTE: Light shader locations should be available
+void PBRLightUpdate(Shader shader, PBRLight light)
+{
+    SetShaderValue(shader, light.enabledLoc, &light.enabled, SHADER_UNIFORM_INT);
+    SetShaderValue(shader, light.typeLoc, &light.type, SHADER_UNIFORM_INT);
+    // Send to shader light position values
+    float position[3] = { light.position.x, light.position.y, light.position.z };
+    SetShaderValue(shader, light.positionLoc, position, SHADER_UNIFORM_VEC3);
+
+    // Send to shader light target position values
+    float target[3] = { light.target.x, light.target.y, light.target.z };
+    SetShaderValue(shader, light.targetLoc, target, SHADER_UNIFORM_VEC3);
+    SetShaderValue(shader, light.colorLoc, light.color, SHADER_UNIFORM_VEC4);
+    SetShaderValue(shader, light.intensityLoc, &light.intensity, SHADER_UNIFORM_FLOAT);
+}
+
+void PBRSetAmbient(Shader shader, Color color, float intensity){
+    float col[3] = {color.r/255,color.g/255,color.b/255};
+    SetShaderValue(shader, GetShaderLocation(shader, "ambientColor"), col, SHADER_UNIFORM_VEC3);
+    SetShaderValue(shader, GetShaderLocation(shader, "ambient"), &intensity, SHADER_UNIFORM_FLOAT);
+}
+
+void PBRMaterialSetup(PBRMaterial *pbrMat, Shader pbrShader, PBREnvironment* environment){
+    pbrMat->pbrShader = pbrShader;
+
+    pbrMat->texAlbedo = (Texture2D){0};
+    pbrMat->texNormal = (Texture2D){0};
+    pbrMat->texMRA = (Texture2D){0};
+    pbrMat->texEmissive = (Texture2D){0};
+
+    //PBRParam
+    pbrMat->albedo[0] = 1.0;
+    pbrMat->albedo[1] = 1.0;
+    pbrMat->albedo[2] = 1.0;
+    pbrMat->albedo[3] = 1.0;
+    pbrMat->metallic = 0;
+    pbrMat->roughness = 0;
+    pbrMat->ao = 1.0;
+    pbrMat->normal = 1;
+    pbrMat->emissive[0] = 0;
+    pbrMat->emissive[1] = 0;
+    pbrMat->emissive[2] = 0;
+    pbrMat->emissive[3] = 0;
+
+    pbrMat->texTiling[0] = 1.0;
+    pbrMat->texTiling[1] = 1.0;
+    pbrMat->texOffset[0] = 0.0;
+    pbrMat->texOffset[1] = 0.0;
+    pbrMat->emissivePower = 1.0;
+    // Set up PBR shader material locations
+
+    pbrMat->albedoLoc = GetShaderLocation(pbrMat->pbrShader, "albedoColor");
+    pbrMat->normalLoc = GetShaderLocation(pbrMat->pbrShader, "normalValue");
+    pbrMat->metallicLoc = GetShaderLocation(pbrMat->pbrShader, "metallicValue");
+    pbrMat->roughnessLoc = GetShaderLocation(pbrMat->pbrShader, "roughnessValue");
+    pbrMat->aoLoc = GetShaderLocation(pbrMat->pbrShader, "aoValue");
+    pbrMat->emissiveColorLoc = GetShaderLocation(pbrMat->pbrShader, "emissiveColor");
+    pbrMat->emissivePowerLoc = GetShaderLocation(pbrMat->pbrShader, "emissivePower");
+
+    pbrMat->texTilingLoc = GetShaderLocation(pbrMat->pbrShader, "tiling");
+    pbrMat->texOffsetLoc = GetShaderLocation(pbrMat->pbrShader, "offset");
+
+    pbrMat->useTexAlbedoLoc = GetShaderLocation(pbrMat->pbrShader, "useTexAlbedo");
+    pbrMat->useTexNormalLoc = GetShaderLocation(pbrMat->pbrShader, "useTexNormal");
+    pbrMat->useTexMRAELoc = GetShaderLocation(pbrMat->pbrShader, "useTexMRA");
+    pbrMat->useTexEmissiveLoc = GetShaderLocation(pbrMat->pbrShader, "useTexEmissive");
+
+    SetShaderValue(pbrMat->pbrShader,pbrMat->albedoLoc,pbrMat->albedo,SHADER_UNIFORM_VEC4);
+    SetShaderValue(pbrMat->pbrShader, pbrMat->emissiveColorLoc, pbrMat->emissive, SHADER_UNIFORM_VEC4);
+    SetShaderValue(pbrMat->pbrShader, pbrMat->emissivePowerLoc, &pbrMat->emissivePower, SHADER_UNIFORM_FLOAT);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->metallicLoc,&pbrMat->metallic,SHADER_UNIFORM_FLOAT);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->roughnessLoc,&pbrMat->roughness,SHADER_UNIFORM_FLOAT);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->aoLoc,&pbrMat->ao,SHADER_UNIFORM_FLOAT);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->normalLoc,&pbrMat->normal,SHADER_UNIFORM_FLOAT);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->texTilingLoc,pbrMat->texTiling,SHADER_UNIFORM_VEC2);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->texOffsetLoc,pbrMat->texOffset,SHADER_UNIFORM_VEC2);
+}
+
+void PBRLoadTextures(PBRMaterial *pbrMat,PBRTexType pbrTexType,const char *fileName){
+    if(pbrMat == NULL) return;
+    switch(pbrTexType){
+        case PBR_TEXTURE_ALBEDO:
+            pbrMat->texAlbedo = LoadTexture(fileName);
+            pbrMat->useTexAlbedo = 1;
+            break;
+        case PBR_TEXTURE_MRA:
+            pbrMat->texMRA = LoadTexture(fileName);
+            pbrMat->useTexMRA = 1;
+            break;
+        case PBR_TEXTURE_NORMAL:
+            pbrMat->texNormal = LoadTexture(fileName);
+            pbrMat->useTexNormal = 1;
+            break;
+        case PBR_TEXTURE_EMISSIVE:
+            pbrMat->texEmissive = LoadTexture(fileName);
+            pbrMat->useTexEmissive = 1;
+            break;
+    }
+}
+
+void UnloadPBRMaterial(PBRMaterial pbrMat){
+    if(pbrMat.useTexAlbedo == 1) UnloadTexture(pbrMat.texAlbedo);
+    if(pbrMat.useTexNormal == 1) UnloadTexture(pbrMat.texNormal);
+    if(pbrMat.useTexMRA == 1) UnloadTexture(pbrMat.texMRA);
+    if(pbrMat.useTexEmissive == 1) UnloadTexture(pbrMat.texEmissive);
+}
+
+void PBRSetColor(PBRMaterial *pbrMat,PBRColorType pbrColorType,Color color){
+    if(pbrMat == NULL) return;
+    switch(pbrColorType){
+        case PBR_COLOR_ALBEDO:
+            pbrMat->albedo[0] = (float) color.r / 255;
+            pbrMat->albedo[1] = (float) color.g / 255;
+            pbrMat->albedo[2] = (float) color.b / 255;
+            pbrMat->albedo[3] = (float) color.a / 255;
+            SetShaderValue(pbrMat->pbrShader,pbrMat->albedoLoc,pbrMat->albedo,SHADER_UNIFORM_VEC4);
+            break;
+        case PBR_COLOR_EMISSIVE:
+            pbrMat->emissive[0] = (float) color.r / 255;
+            pbrMat->emissive[1] = (float) color.g / 255;
+            pbrMat->emissive[2] = (float) color.b / 255;
+            pbrMat->emissive[3] = (float) color.a / 255;
+            SetShaderValue(pbrMat->pbrShader, pbrMat->emissiveColorLoc, pbrMat->emissive, SHADER_UNIFORM_VEC4);
+            break;
+    }
+}
+
+void PBRSetFloat(PBRMaterial *pbrMat, PBRFloatType pbrParamType, float value){
+    if(pbrMat == NULL) return;
+    switch(pbrParamType){
+        case PBR_PARAM_METALLIC:
+            pbrMat->metallic = value;
+            SetShaderValue(pbrMat->pbrShader,pbrMat->metallicLoc,&pbrMat->metallic,SHADER_UNIFORM_FLOAT);
+            break;
+        case PBR_PARAM_ROUGHNESS:
+            pbrMat->roughness = value;
+            SetShaderValue(pbrMat->pbrShader,pbrMat->roughnessLoc,&pbrMat->roughness,SHADER_UNIFORM_FLOAT);
+            break;
+        case PBR_PARAM_NORMAL:
+            pbrMat->normal = value;
+            SetShaderValue(pbrMat->pbrShader,pbrMat->normalLoc,&pbrMat->normal,SHADER_UNIFORM_FLOAT);
+            break;
+        case PBR_PARAM_AO:
+            pbrMat->ao = value;
+            SetShaderValue(pbrMat->pbrShader,pbrMat->aoLoc,&pbrMat->ao,SHADER_UNIFORM_FLOAT);
+            break;
+        case PBR_PARAM_EMISSIVE:
+            pbrMat->emissivePower = value;
+            SetShaderValue(pbrMat->pbrShader,pbrMat->emissivePowerLoc,&pbrMat->emissivePower,SHADER_UNIFORM_FLOAT);
+            break;
+    }
+}
+
+
+void PBRSetVec2(PBRMaterial *pbrMat,PBRVec2Type type,Vector2 value){
+    switch(type){
+        case PBR_VEC2_TILING:
+            pbrMat->texTiling[0] = value.x;
+            pbrMat->texTiling[1] = value.y;
+            SetShaderValue(pbrMat->pbrShader,pbrMat->texTilingLoc,&pbrMat->texTiling,SHADER_UNIFORM_VEC2);
+            break;
+        case PBR_VEC2_OFFSET:
+            pbrMat->texOffset[0] = value.x;
+            pbrMat->texOffset[1] = value.y;
+            SetShaderValue(pbrMat->pbrShader,pbrMat->texOffsetLoc,&pbrMat->texOffset,SHADER_UNIFORM_VEC2);
+            break;
+    }
+}
+
+void PBRSetMaterial(PBRModel* model,PBRMaterial* pbrMat,int matIndex){
+
+
+    model->pbrMat = *pbrMat;
+    model->model.materials[matIndex].shader = model->pbrMat.pbrShader;
+    pbrMat->pbrShader.locs[SHADER_LOC_MAP_MRA] = GetShaderLocation(pbrMat->pbrShader, "mraMap");
+    pbrMat->pbrShader.locs[SHADER_LOC_MAP_EMISSIVE] = GetShaderLocation(pbrMat->pbrShader, "emissiveMap");
+    pbrMat->pbrShader.locs[SHADER_LOC_MAP_NORMAL] = GetShaderLocation(pbrMat->pbrShader, "normalMap");
+
+    if(pbrMat->useTexAlbedo) {
+        model->model.materials[matIndex].maps[MATERIAL_MAP_ALBEDO].texture = pbrMat->texAlbedo;
+    }
+    if(pbrMat->useTexMRA) {
+        model->model.materials[matIndex].maps[MATERIAL_MAP_MRA].texture = pbrMat->texMRA;
+    }
+    if(pbrMat->useTexNormal) {
+        model->model.materials[matIndex].maps[MATERIAL_MAP_NORMAL].texture = pbrMat->texNormal;
+    }
+    if(pbrMat->useTexEmissive) {
+        model->model.materials[matIndex].maps[MATERIAL_MAP_EMISSIVE].texture = pbrMat->texEmissive;
+    }
+
+    SetShaderValue(pbrMat->pbrShader,pbrMat->useTexAlbedoLoc,&pbrMat->useTexAlbedo,SHADER_UNIFORM_INT);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->useTexNormalLoc,&pbrMat->useTexNormal,SHADER_UNIFORM_INT);
+    SetShaderValue(pbrMat->pbrShader, pbrMat->useTexMRAELoc, &pbrMat->useTexMRA, SHADER_UNIFORM_INT);
+    SetShaderValue(pbrMat->pbrShader, pbrMat->useTexEmissiveLoc, &pbrMat->useTexEmissive, SHADER_UNIFORM_INT);
+}
+
+void PBRDrawModel(PBRModel pbrModel, Vector3 position, float scale){
+    PBRMaterial *pbrMat = &pbrModel.pbrMat;
+    SetShaderValue(pbrMat->pbrShader,pbrMat->albedoLoc,pbrMat->albedo,SHADER_UNIFORM_VEC4);
+    SetShaderValue(pbrMat->pbrShader, pbrMat->emissiveColorLoc, pbrMat->emissive, SHADER_UNIFORM_VEC4);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->metallicLoc,&pbrMat->metallic,SHADER_UNIFORM_FLOAT);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->roughnessLoc,&pbrMat->roughness,SHADER_UNIFORM_FLOAT);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->aoLoc,&pbrMat->ao,SHADER_UNIFORM_FLOAT);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->normalLoc,&pbrMat->normal,SHADER_UNIFORM_FLOAT);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->texTilingLoc,pbrMat->texTiling,SHADER_UNIFORM_VEC2);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->texOffsetLoc,pbrMat->texOffset,SHADER_UNIFORM_VEC2);
+
+    SetShaderValue(pbrMat->pbrShader,pbrMat->useTexAlbedoLoc,&pbrMat->useTexAlbedo,SHADER_UNIFORM_INT);
+    SetShaderValue(pbrMat->pbrShader,pbrMat->useTexNormalLoc,&pbrMat->useTexNormal,SHADER_UNIFORM_INT);
+    SetShaderValue(pbrMat->pbrShader, pbrMat->useTexMRAELoc, &pbrMat->useTexMRA, SHADER_UNIFORM_INT);
+    SetShaderValue(pbrMat->pbrShader, pbrMat->useTexEmissiveLoc, &pbrMat->useTexEmissive, SHADER_UNIFORM_INT);
+
+    DrawModel(pbrModel.model,position,scale,WHITE);
+}
+
+PBRModel PBRModelLoad(const char *fileName){
+    PBRModel pbrModel = (PBRModel){0};
+    pbrModel.model = LoadModel(fileName);
+    return pbrModel;
+}
+
+PBRModel PBRModelLoadFromMesh(Mesh mesh){
+    PBRModel pbrModel = (PBRModel){0};
+    pbrModel.model = LoadModelFromMesh(mesh);
+    return pbrModel;
+}
+#endif // RPBR_IMPLEMENTATION

examples/shaders/shaders_basic_pbr.c

@@ -0,0 +1,171 @@
+/*******************************************************************************************
+*
+*   raylib [core] example - Model Defuse Normal Shader (adapted for HTML5 platform)
+*
+*   This example is prepared to compile for PLATFORM_WEB and PLATFORM_DESKTOP
+*   As you will notice, code structure is slightly different to the other examples...
+*   To compile it for PLATFORM_WEB just uncomment #define PLATFORM_WEB at beginning
+*
+*   This example has been created using raylib 5.0 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2023-2024 Afan OLOVCIC (@_DevDad)  2015 Ramon Santamaria (@raysan5)
+*   Model: "Old Rusty Car" (https://skfb.ly/LxRy) by Renafox is licensed under Creative Commons Attribution-NonCommercial (http://creativecommons.org/licenses/by-nc/4.0/).
+********************************************************************************************/
+
+#include "raylib.h"
+
+#if defined(PLATFORM_WEB)
+#include <emscripten/emscripten.h>
+#endif
+
+#define RPBR_IMPLEMENTATION
+#include "rpbr.h"
+
+#if defined(PLATFORM_DESKTOP)
+#define GLSL_VERSION            330
+#else   // PLATFORM_ANDROID, PLATFORM_WEB
+#define GLSL_VERSION            120
+#endif
+
+
+//----------------------------------------------------------------------------------
+// Main Entry Point
+//----------------------------------------------------------------------------------
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    SetConfigFlags(FLAG_MSAA_4X_HINT);
+    InitWindow(screenWidth, screenHeight, "raylib [shaders] example - basic pbr");
+
+    // Define the camera to look into our 3d world
+    Camera camera = { 0 };
+    camera.position = (Vector3){ 2.0f, 2.0f, 6.0f };    // Camera position
+    camera.target = (Vector3){ 0.0f, 0.5f, 0.0f };      // Camera looking at point
+    camera.up = (Vector3){ 0.0f, 1.0f, 0.0f };          // Camera up vector (rotation towards target)
+    camera.fovy = 45.0f;                                // Camera field-of-view Y
+    camera.projection = CAMERA_PERSPECTIVE;             // Camera projection type
+
+
+    Shader shader = LoadShader(TextFormat("resources/shaders/glsl%i/pbr.vs",GLSL_VERSION),
+                               TextFormat("resources/shaders/glsl%i/pbr.fs",GLSL_VERSION));
+
+
+
+    PBRModel model = PBRModelLoad("resources/models/old_car_new.glb");
+    //if we use obj file formator if model doesn't have tangents we have to calculate MeshTangents
+    //by using raylib function GenMeshTangents(mesh) for example: obj file doesn't support tangents
+    //GenMeshTangents(&model.model.meshes[0]); 
+
+    PBRMaterial model_mat = (PBRMaterial){0};
+    PBRMaterialSetup(&model_mat, shader, NULL); //environment = NULL for now
+    PBRLoadTextures(&model_mat, PBR_TEXTURE_ALBEDO, "resources/old_car_d.png");
+    PBRLoadTextures(&model_mat, PBR_TEXTURE_MRA, "resources/old_car_mra.png");
+    PBRLoadTextures(&model_mat, PBR_TEXTURE_NORMAL, "resources/old_car_n.png");
+    PBRLoadTextures(&model_mat, PBR_TEXTURE_EMISSIVE, "resources/old_car_e.png");
+    PBRSetColor(&model_mat,PBR_COLOR_EMISSIVE, (Color){255,162,0,255});
+    PBRSetVec2(&model_mat, PBR_VEC2_TILING,(Vector2){0.5,0.5});
+    PBRSetMaterial(&model,&model_mat,0);
+
+    PBRModel floor = PBRModelLoad("resources/models/plane.glb");
+
+    PBRMaterial floor_mat = (PBRMaterial){0};
+    PBRMaterialSetup(&floor_mat, shader, NULL);
+    PBRLoadTextures(&floor_mat, PBR_TEXTURE_ALBEDO, "resources/road_a.png");
+    PBRLoadTextures(&floor_mat, PBR_TEXTURE_MRA, "resources/road_mra.png");
+    PBRLoadTextures(&floor_mat, PBR_TEXTURE_NORMAL, "resources/road_n.png");
+    PBRSetVec2(&floor_mat, PBR_VEC2_TILING,(Vector2){0.5,0.5});
+    PBRSetMaterial(&floor,&floor_mat,0);
+
+    shader.locs[SHADER_LOC_VECTOR_VIEW] = GetShaderLocation(shader, "viewPos");
+    int numOfLightsLoc = GetShaderLocation(shader, "numOfLights");
+    int numOfLights = 4;
+    SetShaderValue(shader, numOfLightsLoc, &numOfLights, SHADER_UNIFORM_INT);
+
+    Color ambCol = (Color){26,32,135,255};
+    float ambIntens = 0.02;
+
+    int albedoLoc = GetShaderLocation(shader, "albedo");
+    PBRSetAmbient(shader,ambCol,ambIntens);
+
+    // Create lights
+    PBRLight lights[MAX_LIGHTS] = { 0 };
+    lights[0] = PBRLightCreate(LIGHT_POINT, (Vector3){ -1, 1, -2 }, (Vector3){0,0,0}, YELLOW,4, shader);
+    lights[1] = PBRLightCreate(LIGHT_POINT, (Vector3){ 2,  1, 1 }, (Vector3){0,0,0}, GREEN,3.3, shader);
+    lights[2] = PBRLightCreate(LIGHT_POINT, (Vector3){ -2, 1, 1 }, (Vector3){0,0,0}, RED,8.3, shader);
+    lights[3] = PBRLightCreate(LIGHT_POINT, (Vector3){ 1,  1, -2 }, (Vector3){0,0,0}, BLUE,2, shader);
+    SetShaderValueV(shader, GetShaderLocation(shader, "lights"), lights, SHADER_UNIFORM_FLOAT, numOfLights);
+
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second-------------------------------------------------------------
+
+    int emissiveCnt = 0;
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        UpdateCamera(&camera, CAMERA_ORBITAL);
+
+        // Update the shader with the camera view vector (points towards { 0.0f, 0.0f, 0.0f })
+        float cameraPos[3] = {camera.position.x, camera.position.y, camera.position.z};
+        SetShaderValue(shader, shader.locs[SHADER_LOC_VECTOR_VIEW], cameraPos, SHADER_UNIFORM_VEC3);
+
+        // Check key inputs to enable/disable lights
+        if (IsKeyPressed(KEY_Y)) { lights[0].enabled = !lights[0].enabled; }
+        if (IsKeyPressed(KEY_G)) { lights[1].enabled = !lights[1].enabled; }
+        if (IsKeyPressed(KEY_R)) { lights[2].enabled = !lights[2].enabled; }
+        if (IsKeyPressed(KEY_B)) { lights[3].enabled = !lights[3].enabled; }
+
+        // Update light values (actually, only enable/disable them)
+        for (int i = 0; i < MAX_LIGHTS; i++) PBRLightUpdate(shader, lights[i]);
+        emissiveCnt--;
+        if(emissiveCnt<=0){
+            emissiveCnt = GetRandomValue(0,20);
+            PBRSetFloat(&model_mat,PBR_PARAM_EMISSIVE,(float)GetRandomValue(0,100)/100);
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+            ClearBackground(BLACK);
+            BeginMode3D(camera);
+
+                PBRDrawModel(floor, (Vector3){0,0,0}, 5.0f);
+                PBRDrawModel(model, (Vector3) {0, 0.0, 0}, 0.005);
+
+                // Draw spheres to show where the lights are
+                for (int i = 0; i < MAX_LIGHTS; i++) {
+                    Color col = (Color) {lights[i].color[0] * 255, lights[i].color[1] * 255, lights[i].color[2] * 255,
+                                         lights[i].color[3] * 255};
+                    if (lights[i].enabled) DrawSphereEx(lights[i].position, 0.2f, 8, 8, col);
+                    else DrawSphereWires(lights[i].position, 0.2f, 8, 8, ColorAlpha(col, 0.3f));
+                }
+            EndMode3D();
+
+            DrawText("(c) Old Rusty Car model by Renafox (https://skfb.ly/LxRy)", screenWidth - 320, screenHeight - 20, 10, GRAY);
+            DrawFPS(10, 10);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    //--------------------------------------------------------------------------------------
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+
+    UnloadModel(floor.model);           // Unload model
+    UnloadModel(model.model);           // Unload model
+    UnloadShader(shader);               // Unload Shader
+    UnloadPBRMaterial(floor_mat);       // Unload PBRMaterial
+    UnloadPBRMaterial(model_mat);       // Unload PBRMaterial
+    
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+    }

src/platforms/rcore_web.c

@@ -73,6 +73,7 @@
 //----------------------------------------------------------------------------------
 typedef struct {
     GLFWwindow *handle;                 // GLFW window handle (graphic device)
+    bool ourFullscreen;                 // Internal var to filter our handling of fullscreen vs the user handling of fullscreen
 } PlatformData;
 
 //----------------------------------------------------------------------------------
@@ -140,6 +141,37 @@ bool WindowShouldClose(void)
 // Toggle fullscreen mode
 void ToggleFullscreen(void)
 {
+    platform.ourFullscreen = true;
+    bool enterFullscreen = false;
+
+    const bool wasFullscreen = EM_ASM_INT( { if (document.fullscreenElement) return 1; }, 0);
+    if (wasFullscreen)
+    {
+        EM_ASM(document.exitFullscreen(););
+
+        if (CORE.Window.flags & FLAG_FULLSCREEN_MODE) enterFullscreen = false;
+        else enterFullscreen = true;
+
+        CORE.Window.fullscreen = false;
+        CORE.Window.flags &= ~FLAG_FULLSCREEN_MODE;
+        CORE.Window.flags &= ~FLAG_BORDERLESS_WINDOWED_MODE;
+    }
+    else enterFullscreen = true;
+
+    if (enterFullscreen)
+    {
+        // NOTE: The setTimeouts handle the browser mode change delay
+        EM_ASM(
+            setTimeout(function()
+            {
+                Module.requestFullscreen(false, false);
+            }, 100);
+        );
+        CORE.Window.fullscreen = true;
+        CORE.Window.flags |= FLAG_FULLSCREEN_MODE;
+    }
+
+    // NOTE: Old notes below:
     /*
         EM_ASM
         (
@@ -204,40 +236,44 @@ void ToggleFullscreen(void)
             CORE.Window.flags &= ~FLAG_FULLSCREEN_MODE;
         }
     */
-
-    CORE.Window.fullscreen = !CORE.Window.fullscreen; // Toggle fullscreen flag
 }
 
 // Toggle borderless windowed mode
 void ToggleBorderlessWindowed(void)
 {
+    platform.ourFullscreen = true;
+    bool enterBorderless = false;
+
     const bool wasFullscreen = EM_ASM_INT( { if (document.fullscreenElement) return 1; }, 0);
     if (wasFullscreen)
     {
         EM_ASM(document.exitFullscreen(););
 
+        if (CORE.Window.flags & FLAG_BORDERLESS_WINDOWED_MODE) enterBorderless = false;
+        else enterBorderless = true;
+
         CORE.Window.fullscreen = false;
         CORE.Window.flags &= ~FLAG_FULLSCREEN_MODE;
+        CORE.Window.flags &= ~FLAG_BORDERLESS_WINDOWED_MODE;
     }
+    else enterBorderless = true;
 
-    if (!IsWindowState(FLAG_BORDERLESS_WINDOWED_MODE))
+    if (enterBorderless)
     {
         // NOTE: 1. The setTimeouts handle the browser mode change delay
-        //       2. The style unset handles the possibility of a width="100%" like on the default shell.html file
+        //       2. The style unset handles the possibility of a width="value%" like on the default shell.html file
         EM_ASM(
             setTimeout(function()
             {
-                Module.requestFullscreen(true, true);
+                Module.requestFullscreen(false, true);
                 setTimeout(function()
                 {
                     canvas.style.width="unset";
                 }, 100);
             }, 100);
         );
-
         CORE.Window.flags |= FLAG_BORDERLESS_WINDOWED_MODE;
     }
-    else CORE.Window.flags &= ~FLAG_BORDERLESS_WINDOWED_MODE;
 }
 
 // Set window state: maximized, if resizable
@@ -277,9 +313,9 @@ void SetWindowState(unsigned int flags)
     }
 
     // State change: FLAG_FULLSCREEN_MODE
-    if ((flags & FLAG_FULLSCREEN_MODE) > 0)
+    if ((CORE.Window.flags & FLAG_FULLSCREEN_MODE) != (flags & FLAG_FULLSCREEN_MODE))
     {
-        TRACELOG(LOG_WARNING, "SetWindowState(FLAG_FULLSCREEN_MODE) not available yet on target platform");
+        ToggleFullscreen();     // NOTE: Window state flag updated inside function
     }
 
     // State change: FLAG_WINDOW_RESIZABLE
@@ -384,9 +420,9 @@ void ClearWindowState(unsigned int flags)
     }
 
     // State change: FLAG_FULLSCREEN_MODE
-    if ((flags & FLAG_FULLSCREEN_MODE) > 0)
+    if (((CORE.Window.flags & FLAG_FULLSCREEN_MODE) > 0) && ((flags & FLAG_FULLSCREEN_MODE) > 0))
     {
-        TRACELOG(LOG_WARNING, "ClearWindowState(FLAG_FULLSCREEN_MODE) not available yet on target platform");
+        ToggleFullscreen();     // NOTE: Window state flag updated inside function
     }
 
     // State change: FLAG_WINDOW_RESIZABLE
@@ -572,15 +608,19 @@ Vector2 GetMonitorPosition(int monitor)
 // Get selected monitor width (currently used by monitor)
 int GetMonitorWidth(int monitor)
 {
-    TRACELOG(LOG_WARNING, "GetMonitorWidth() not implemented on target platform");
-    return 0;
+    // NOTE: Returned value is limited to the current monitor where the browser window is located
+    int width = 0;
+    width = EM_ASM_INT( { return screen.width; }, 0);
+    return width;
 }
 
 // Get selected monitor height (currently used by monitor)
 int GetMonitorHeight(int monitor)
 {
-    TRACELOG(LOG_WARNING, "GetMonitorHeight() not implemented on target platform");
-    return 0;
+    // NOTE: Returned value is limited to the current monitor where the browser window is located
+    int height = 0;
+    height = EM_ASM_INT( { return screen.height; }, 0);
+    return height;
 }
 
 // Get selected monitor physical width in millimetres
@@ -614,8 +654,11 @@ const char *GetMonitorName(int monitor)
 // Get window position XY on monitor
 Vector2 GetWindowPosition(void)
 {
-    TRACELOG(LOG_WARNING, "GetWindowPosition() not implemented on target platform");
-    return (Vector2){ 0, 0 };
+    // NOTE: Returned position is relative to the current monitor where the browser window is located
+    Vector2 position = { 0, 0 };
+    position.x = (float)EM_ASM_INT( { return window.screenX; }, 0);
+    position.y = (float)EM_ASM_INT( { return window.screenY; }, 0);
+    return position;
 }
 
 // Get window scale DPI factor for current monitor
@@ -944,8 +987,13 @@ int InitPlatform(void)
     if ((CORE.Window.flags & FLAG_WINDOW_TOPMOST) > 0) glfwWindowHint(GLFW_FLOATING, GLFW_TRUE);
     else glfwWindowHint(GLFW_FLOATING, GLFW_FALSE);
 
-        // NOTE: Some GLFW flags are not supported on HTML5
-        // e.g.: GLFW_TRANSPARENT_FRAMEBUFFER, GLFW_SCALE_TO_MONITOR, GLFW_COCOA_RETINA_FRAMEBUFFER, GLFW_MOUSE_PASSTHROUGH
+    // NOTE: Some GLFW flags are not supported on HTML5
+    // e.g.: GLFW_TRANSPARENT_FRAMEBUFFER, GLFW_COCOA_RETINA_FRAMEBUFFER, GLFW_MOUSE_PASSTHROUGH
+
+    // Scale content area based on the monitor content scale where window is placed on
+    // NOTE: This feature requires emscripten 3.1.51
+    //if ((CORE.Window.flags & FLAG_WINDOW_HIGHDPI) > 0) glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE);
+    //else glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_FALSE);
 
     if (CORE.Window.flags & FLAG_MSAA_4X_HINT)
     {
@@ -1003,6 +1051,9 @@ int InitPlatform(void)
     CORE.Window.display.width = CORE.Window.screen.width;
     CORE.Window.display.height = CORE.Window.screen.height;
 
+    // Init fullscreen toggle required var:
+    platform.ourFullscreen = false;
+
     if (CORE.Window.fullscreen)
     {
         // remember center for switchinging from fullscreen to window
@@ -1136,7 +1187,7 @@ int InitPlatform(void)
     // Initialize input events callbacks
     //----------------------------------------------------------------------------
     // Setup callback functions for the DOM events
-    emscripten_set_fullscreenchange_callback("#canvas", NULL, 1, EmscriptenFullscreenChangeCallback);
+    emscripten_set_fullscreenchange_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, NULL, 1, EmscriptenFullscreenChangeCallback);
 
     // WARNING: Below resize code was breaking fullscreen mode for sample games and examples, it needs review
     // Check fullscreen change events(note this is done on the window since most browsers don't support this on #canvas)
@@ -1400,7 +1451,19 @@ static void CursorEnterCallback(GLFWwindow *window, int enter)
 // Register fullscreen change events
 static EM_BOOL EmscriptenFullscreenChangeCallback(int eventType, const EmscriptenFullscreenChangeEvent *event, void *userData)
 {
-    // TODO: Implement EmscriptenFullscreenChangeCallback()?
+    // NOTE: 1. Reset the fullscreen flags if the user left fullscreen manually by pressing the Escape key
+    //       2. Which is a necessary safeguard because that case will bypass the toggles CORE.Window.flags resets
+    if (platform.ourFullscreen) platform.ourFullscreen = false;
+    else
+    {
+        const bool wasFullscreen = EM_ASM_INT( { if (document.fullscreenElement) return 1; }, 0);
+        if (!wasFullscreen)
+        {
+            CORE.Window.fullscreen = false;
+            CORE.Window.flags &= ~FLAG_FULLSCREEN_MODE;
+            CORE.Window.flags &= ~FLAG_BORDERLESS_WINDOWED_MODE;
+        }
+    }
 
     return 1; // The event was consumed by the callback handler
 }

src/raylib.h

@@ -484,7 +484,6 @@ typedef struct VrDeviceInfo {
     int vResolution;                // Vertical resolution in pixels
     float hScreenSize;              // Horizontal size in meters
     float vScreenSize;              // Vertical size in meters
-    float vScreenCenter;            // Screen center in meters
     float eyeToScreenDistance;      // Distance between eye and display in meters
     float lensSeparationDistance;   // Lens separation distance in meters
     float interpupillaryDistance;   // IPD (distance between pupils) in meters
@@ -1481,6 +1480,7 @@ RLAPI const char *TextToUpper(const char *text);                      // Get upp
 RLAPI const char *TextToLower(const char *text);                      // Get lower case version of provided string
 RLAPI const char *TextToPascal(const char *text);                     // Get Pascal case notation version of provided string
 RLAPI int TextToInteger(const char *text);                            // Get integer value from text (negative values not supported)
+RLAPI float TextToFloat(const char *text);                            // Get float value from text (negative values not supported)
 
 //------------------------------------------------------------------------------------
 // Basic 3d Shapes Drawing Functions (Module: models)

src/rcore.c

@@ -1194,8 +1194,8 @@ VrStereoConfig LoadVrStereoConfig(VrDeviceInfo device)
         // NOTE: Camera movement might seem more natural if we model the head.
         // Our axis of rotation is the base of our head, so we might want to add
         // some y (base of head to eye level) and -z (center of head to eye protrusion) to the camera positions.
-        config.viewOffset[0] = MatrixTranslate(-device.interpupillaryDistance*0.5f, 0.075f, 0.045f);
-        config.viewOffset[1] = MatrixTranslate(device.interpupillaryDistance*0.5f, 0.075f, 0.045f);
+        config.viewOffset[0] = MatrixTranslate(device.interpupillaryDistance*0.5f, 0.075f, 0.045f);
+        config.viewOffset[1] = MatrixTranslate(-device.interpupillaryDistance*0.5f, 0.075f, 0.045f);
 
         // Compute eyes Viewports
         /*

src/rshapes.c

@@ -1546,6 +1546,92 @@ void DrawPolyLinesEx(Vector2 center, int sides, float radius, float rotation, fl
 // Draw spline: linear, minimum 2 points
 void DrawSplineLinear(Vector2 *points, int pointCount, float thick, Color color)
 {
+    if (pointCount < 2) return;
+
+#if defined(SUPPORT_SPLINE_MITERS)
+    Vector2 prevNormal = (Vector2){-(points[1].y - points[0].y), (points[1].x - points[0].x)};
+    float prevLength = sqrtf(prevNormal.x*prevNormal.x + prevNormal.y*prevNormal.y);
+    
+    if (prevLength > 0.0f)
+    {
+        prevNormal.x /= prevLength;
+        prevNormal.y /= prevLength;
+    }
+    else
+    {
+        prevNormal.x = 0.0f;
+        prevNormal.y = 0.0f;
+    }
+
+    Vector2 prevRadius = { 0.5f*thick*prevNormal.x, 0.5f*thick*prevNormal.y };
+    
+    for (int i = 0; i < pointCount - 1; i++)
+    {
+        Vector2 normal = { 0 };
+
+        if (i < pointCount - 2)
+        {
+            normal = (Vector2){-(points[i + 2].y - points[i + 1].y), (points[i + 2].x - points[i + 1].x)};
+            float normalLength = sqrtf(normal.x*normal.x + normal.y*normal.y);
+            
+            if (normalLength > 0.0f)
+            {
+                normal.x /= normalLength;
+                normal.y /= normalLength;
+            }
+            else
+            {
+                normal.x = 0.0f;
+                normal.y = 0.0f;
+            }
+        }
+        else
+        {
+            normal = prevNormal;
+        }
+
+        Vector2 radius = { prevNormal.x + normal.x, prevNormal.y + normal.y };
+        float radiusLength = sqrtf(radius.x*radius.x + radius.y*radius.y);
+        
+        if (radiusLength > 0.0f)
+        {
+            radius.x /= radiusLength;
+            radius.y /= radiusLength;
+        }
+        else
+        {
+            radius.x = 0.0f;
+            radius.y = 0.0f;
+        }
+
+        float cosTheta = radius.x*normal.x + radius.y*normal.y;
+
+        if (cosTheta != 0.0f)
+        {
+            radius.x *= (thick*0.5f/cosTheta);
+            radius.y *= (thick*0.5f/cosTheta);
+        }
+        else
+        {
+            radius.x = 0.0f;
+            radius.y = 0.0f;
+        }
+        
+        Vector2 strip[4] = {
+            { points[i].x - prevRadius.x, points[i].y - prevRadius.y },
+            { points[i].x + prevRadius.x, points[i].y + prevRadius.y },
+            { points[i + 1].x - radius.x, points[i + 1].y - radius.y },
+            { points[i + 1].x + radius.x, points[i + 1].y + radius.y }
+        };
+
+        DrawTriangleStrip(strip, 4, color);
+
+        prevRadius = radius;
+        prevNormal = normal;
+    }
+
+#else   // !SUPPORT_SPLINE_MITTERS
+
     Vector2 delta = { 0 };
     float length = 0.0f;
     float scale = 0.0f;
@@ -1567,8 +1653,10 @@ void DrawSplineLinear(Vector2 *points, int pointCount, float thick, Color color)
 
         DrawTriangleStrip(strip, 4, color);
     }
-#if defined(SUPPORT_SPLINE_SEGMENT_CAPS)
+#endif
     
+#if defined(SUPPORT_SPLINE_SEGMENT_CAPS)
+    // TODO: Add spline segment rounded caps at the begin/end of the spline
 #endif
 }
 

src/rtext.c

@@ -1421,6 +1421,28 @@ int TextToInteger(const char *text)
     return value*sign;
 }
 
+float TextToFloat(const char *text)
+{
+    float value = 0.0f;
+    float sign = 1.0f;
+
+    if ((text[0] == '+') || (text[0] == '-'))
+    {
+        if (text[0] == '-') sign = -1;
+        text++;
+    }
+    int i = 0;
+    for (; ((text[i] >= '0') && (text[i] <= '9')); ++i) value = value*10.0f + (float)(text[i] - '0');
+    if (text[i++] != '.') return value*sign;
+    float divisor = 10.0f;
+    for (; ((text[i] >= '0') && (text[i] <= '9')); ++i)
+    {
+        value += ((float)(text[i] - '0'))/divisor;
+        divisor = divisor*10.0f;
+    }
+    return value;
+}
+
 #if defined(SUPPORT_TEXT_MANIPULATION)
 // Copy one string to another, returns bytes copied
 int TextCopy(char *dst, const char *src)
@@ -2029,7 +2051,8 @@ static int GetLine(const char *origin, char *buffer, int maxLength)
 // REQUIRES: strstr(), sscanf(), strrchr(), memcpy()
 static Font LoadBMFont(const char *fileName)
 {
-    #define MAX_BUFFER_SIZE     256
+    #define MAX_BUFFER_SIZE       256
+    #define MAX_FONT_IMAGE_PAGES    8
 
     Font font = { 0 };
 
@@ -2041,7 +2064,8 @@ static Font LoadBMFont(const char *fileName)
 
     int imWidth = 0;
     int imHeight = 0;
-    char imFileName[129] = { 0 };
+    int pageCount = 1;
+    char imFileName[MAX_FONT_IMAGE_PAGES][129] = { 0 };
 
     int base = 0;       // Useless data
     int readBytes = 0;  // Data bytes read
@@ -2060,17 +2084,26 @@ static Font LoadBMFont(const char *fileName)
     // Read line data
     readBytes = GetLine(fileTextPtr, buffer, MAX_BUFFER_SIZE);
     searchPoint = strstr(buffer, "lineHeight");
-    readVars = sscanf(searchPoint, "lineHeight=%i base=%i scaleW=%i scaleH=%i", &fontSize, &base, &imWidth, &imHeight);
+    readVars = sscanf(searchPoint, "lineHeight=%i base=%i scaleW=%i scaleH=%i pages=%i", &fontSize, &base, &imWidth, &imHeight, &pageCount);
     fileTextPtr += (readBytes + 1);
     
     if (readVars < 4) { UnloadFileText(fileText); return font; } // Some data not available, file malformed
     
-    readBytes = GetLine(fileTextPtr, buffer, MAX_BUFFER_SIZE);
-    searchPoint = strstr(buffer, "file");
-    readVars = sscanf(searchPoint, "file=\"%128[^\"]\"", imFileName);
-    fileTextPtr += (readBytes + 1);
+    if (pageCount > MAX_FONT_IMAGE_PAGES)
+    {
+        TRACELOG(LOG_WARNING, "FONT: [%s] Font defines more pages than supported: %i/%i", fileName, pageCount, MAX_FONT_IMAGE_PAGES);
+        pageCount = MAX_FONT_IMAGE_PAGES;
+    }
 
-    if (readVars < 1) { UnloadFileText(fileText); return font; } // No fileName read
+    for (int i = 0; i < pageCount; i++)
+    {
+        readBytes = GetLine(fileTextPtr, buffer, MAX_BUFFER_SIZE);
+        searchPoint = strstr(buffer, "file");
+        readVars = sscanf(searchPoint, "file=\"%128[^\"]\"", imFileName[i]);
+        fileTextPtr += (readBytes + 1);
+
+        if (readVars < 1) { UnloadFileText(fileText); return font; } // No fileName read
+    }
 
     readBytes = GetLine(fileTextPtr, buffer, MAX_BUFFER_SIZE);
     searchPoint = strstr(buffer, "count");
@@ -2079,50 +2112,56 @@ static Font LoadBMFont(const char *fileName)
 
     if (readVars < 1) { UnloadFileText(fileText); return font; } // No glyphCount read
 
-    // Compose correct path using route of .fnt file (fileName) and imFileName
-    char *imPath = NULL;
-    char *lastSlash = NULL;
+    // Load all required images for further compose
+    Image *imFonts = (Image *)RL_CALLOC(pageCount, sizeof(Image)); // Font atlases, multiple images
 
-    lastSlash = strrchr(fileName, '/');
-    if (lastSlash == NULL) lastSlash = strrchr(fileName, '\\');
-
-    if (lastSlash != NULL)
+    for (int i = 0; i < pageCount; i++)
     {
-        // NOTE: We need some extra space to avoid memory corruption on next allocations!
-        imPath = (char *)RL_CALLOC(TextLength(fileName) - TextLength(lastSlash) + TextLength(imFileName) + 4, 1);
-        memcpy(imPath, fileName, TextLength(fileName) - TextLength(lastSlash) + 1);
-        memcpy(imPath + TextLength(fileName) - TextLength(lastSlash) + 1, imFileName, TextLength(imFileName));
-    }
-    else imPath = imFileName;
+        imFonts[i] = LoadImage(TextFormat("%s/%s", GetDirectoryPath(fileName), imFileName[i]));
 
-    TRACELOGD("    > Image loading path: %s", imPath);
-
-    Image imFont = LoadImage(imPath);
-
-    if (imFont.format == PIXELFORMAT_UNCOMPRESSED_GRAYSCALE)
-    {
-        // Convert image to GRAYSCALE + ALPHA, using the mask as the alpha channel
-        Image imFontAlpha = {
-            .data = RL_CALLOC(imFont.width*imFont.height, 2),
-            .width = imFont.width,
-            .height = imFont.height,
-            .mipmaps = 1,
-            .format = PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA
-        };
-
-        for (int p = 0, i = 0; p < (imFont.width*imFont.height*2); p += 2, i++)
+        if (imFonts[i].format == PIXELFORMAT_UNCOMPRESSED_GRAYSCALE)
         {
-            ((unsigned char *)(imFontAlpha.data))[p] = 0xff;
-            ((unsigned char *)(imFontAlpha.data))[p + 1] = ((unsigned char *)imFont.data)[i];
-        }
+            // Convert image to GRAYSCALE + ALPHA, using the mask as the alpha channel
+            Image imFontAlpha = {
+                .data = RL_CALLOC(imFonts[i].width*imFonts[i].height, 2),
+                .width = imFonts[i].width,
+                .height = imFonts[i].height,
+                .mipmaps = 1,
+                .format = PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA
+            };
 
-        UnloadImage(imFont);
-        imFont = imFontAlpha;
+            for (int p = 0, pi = 0; p < (imFonts[i].width*imFonts[i].height*2); p += 2, pi++)
+            {
+                ((unsigned char *)(imFontAlpha.data))[p] = 0xff;
+                ((unsigned char *)(imFontAlpha.data))[p + 1] = ((unsigned char *)imFonts[i].data)[pi];
+            }
+
+            UnloadImage(imFonts[i]);
+            imFonts[i] = imFontAlpha;
+        }
     }
 
-    font.texture = LoadTextureFromImage(imFont);
+    Image fullFont = imFonts[0];
+    for (int i = 1; i < pageCount; i++) UnloadImage(imFonts[i]);
 
-    if (lastSlash != NULL) RL_FREE(imPath);
+    // If multiple atlas, then merge atlas
+    // NOTE: WARNING: This process could be really slow!
+    if (pageCount > 1)
+    {
+        // Resize font atlas to draw additional images 
+        ImageResizeCanvas(&fullFont, imWidth, imHeight*pageCount, 0, 0, BLACK); 
+
+        for (int i = 1; i < pageCount; i++)
+        {
+            Rectangle srcRec = { 0.0f, 0.0f, (float)imWidth, (float)imHeight };
+            Rectangle destRec = { 0.0f, (float)imHeight*(float)i, (float)imWidth, (float)imHeight };
+            ImageDraw(&fullFont, imFonts[i], srcRec, destRec, WHITE);              
+        }
+    }
+    
+    RL_FREE(imFonts);
+
+    font.texture = LoadTextureFromImage(fullFont);
 
     // Fill font characters info data
     font.baseSize = fontSize;
@@ -2131,19 +2170,19 @@ static Font LoadBMFont(const char *fileName)
     font.glyphs = (GlyphInfo *)RL_MALLOC(glyphCount*sizeof(GlyphInfo));
     font.recs = (Rectangle *)RL_MALLOC(glyphCount*sizeof(Rectangle));
 
-    int charId, charX, charY, charWidth, charHeight, charOffsetX, charOffsetY, charAdvanceX;
+    int charId, charX, charY, charWidth, charHeight, charOffsetX, charOffsetY, charAdvanceX, pageID;
 
     for (int i = 0; i < glyphCount; i++)
     {
         readBytes = GetLine(fileTextPtr, buffer, MAX_BUFFER_SIZE);
-        readVars = sscanf(buffer, "char id=%i x=%i y=%i width=%i height=%i xoffset=%i yoffset=%i xadvance=%i",
-                       &charId, &charX, &charY, &charWidth, &charHeight, &charOffsetX, &charOffsetY, &charAdvanceX);
+        readVars = sscanf(buffer, "char id=%i x=%i y=%i width=%i height=%i xoffset=%i yoffset=%i xadvance=%i page=%i",
+                       &charId, &charX, &charY, &charWidth, &charHeight, &charOffsetX, &charOffsetY, &charAdvanceX, &pageID);
         fileTextPtr += (readBytes + 1);
         
-        if (readVars == 8)  // Make sure all char data has been properly read
+        if (readVars == 9)  // Make sure all char data has been properly read
         {
             // Get character rectangle in the font atlas texture
-            font.recs[i] = (Rectangle){ (float)charX, (float)charY, (float)charWidth, (float)charHeight };
+            font.recs[i] = (Rectangle){ (float)charX, (float)charY + (float)imHeight*pageID, (float)charWidth, (float)charHeight };
 
             // Save data properly in sprite font
             font.glyphs[i].value = charId;
@@ -2151,13 +2190,13 @@ static Font LoadBMFont(const char *fileName)
             font.glyphs[i].offsetY = charOffsetY;
             font.glyphs[i].advanceX = charAdvanceX;
 
-            // Fill character image data from imFont data
-            font.glyphs[i].image = ImageFromImage(imFont, font.recs[i]);
+            // Fill character image data from full font data
+            font.glyphs[i].image = ImageFromImage(fullFont, font.recs[i]);
         }
         else TRACELOG(LOG_WARNING, "FONT: [%s] Some characters data not correctly provided", fileName);
     }
 
-    UnloadImage(imFont);
+    UnloadImage(fullFont);
     UnloadFileText(fileText);
 
     if (font.texture.id == 0)
@@ -2170,6 +2209,7 @@ static Font LoadBMFont(const char *fileName)
 
     return font;
 }
+
 #endif
 
 #endif      // SUPPORT_MODULE_RTEXT

src/rtextures.c

@@ -213,14 +213,14 @@
 #define STBIR_MALLOC(size,c) ((void)(c), RL_MALLOC(size))
 #define STBIR_FREE(ptr,c) ((void)(c), RL_FREE(ptr))
 #define STB_IMAGE_RESIZE_IMPLEMENTATION
-#include "external/stb_image_resize2.h"  // Required for: stbir_resize_uint8_linear() [ImageResize()]
+#include "external/stb_image_resize2.h"     // Required for: stbir_resize_uint8_linear() [ImageResize()]
 
 #if defined(SUPPORT_FILEFORMAT_SVG)
-	#define NANOSVG_IMPLEMENTATION	// Expands implementation
-	#include "external/nanosvg.h"
+    #define NANOSVG_IMPLEMENTATION          // Expands implementation
+    #include "external/nanosvg.h"
 
-	#define NANOSVGRAST_IMPLEMENTATION
-	#include "external/nanosvgrast.h"
+    #define NANOSVGRAST_IMPLEMENTATION
+    #include "external/nanosvgrast.h"
 #endif
 
 //----------------------------------------------------------------------------------
@@ -1959,29 +1959,24 @@ void ImageBlurGaussian(Image *image, int blurSize) {
             float avgG = 0.0f;
             float avgB = 0.0f;
             float avgAlpha = 0.0f;
-            int convolutionSize = blurSize+1;
+            int convolutionSize = blurSize;
 
-            for (int i = 0; i < blurSize+1; i++)
+            for (int i = 0; i < blurSize; i++)
             {
                 avgR += pixelsCopy1[row*image->width + i].x;
                 avgG += pixelsCopy1[row*image->width + i].y;
                 avgB += pixelsCopy1[row*image->width + i].z;
                 avgAlpha += pixelsCopy1[row*image->width + i].w;
-            }
+			}
 
-            pixelsCopy2[row*image->width].x = avgR/convolutionSize;
-            pixelsCopy2[row*image->width].y = avgG/convolutionSize;
-            pixelsCopy2[row*image->width].z = avgB/convolutionSize;
-            pixelsCopy2[row*image->width].w = avgAlpha/convolutionSize;
-
-            for (int x = 1; x < image->width; x++)
+            for (int x = 0; x < image->width; x++)
             {
-                if (x-blurSize >= 0)
+                if (x-blurSize-1 >= 0)
                 {
-                    avgR -= pixelsCopy1[row*image->width + x-blurSize].x;
-                    avgG -= pixelsCopy1[row*image->width + x-blurSize].y;
-                    avgB -= pixelsCopy1[row*image->width + x-blurSize].z;
-                    avgAlpha -= pixelsCopy1[row*image->width + x-blurSize].w;
+                    avgR -= pixelsCopy1[row*image->width + x-blurSize-1].x;
+                    avgG -= pixelsCopy1[row*image->width + x-blurSize-1].y;
+                    avgB -= pixelsCopy1[row*image->width + x-blurSize-1].z;
+                    avgAlpha -= pixelsCopy1[row*image->width + x-blurSize-1].w;
                     convolutionSize--;
                 }
 
@@ -1999,7 +1994,7 @@ void ImageBlurGaussian(Image *image, int blurSize) {
                 pixelsCopy2[row*image->width + x].z = avgB/convolutionSize;
                 pixelsCopy2[row*image->width + x].w = avgAlpha/convolutionSize;
             }
-                }
+        }
 
         // Vertical motion blur
         for (int col = 0; col < image->width; col++)
@@ -2008,9 +2003,9 @@ void ImageBlurGaussian(Image *image, int blurSize) {
             float avgG = 0.0f;
             float avgB = 0.0f;
             float avgAlpha = 0.0f;
-            int convolutionSize = blurSize+1;
+            int convolutionSize = blurSize;
 
-            for (int i = 0; i < blurSize+1; i++)
+            for (int i = 0; i < blurSize; i++)
             {
                 avgR += pixelsCopy2[i*image->width + col].x;
                 avgG += pixelsCopy2[i*image->width + col].y;
@@ -2018,19 +2013,14 @@ void ImageBlurGaussian(Image *image, int blurSize) {
                 avgAlpha += pixelsCopy2[i*image->width + col].w;
             }
 
-            pixelsCopy1[col].x = (unsigned char) (avgR/convolutionSize);
-            pixelsCopy1[col].y = (unsigned char) (avgG/convolutionSize);
-            pixelsCopy1[col].z = (unsigned char) (avgB/convolutionSize);
-            pixelsCopy1[col].w = (unsigned char) (avgAlpha/convolutionSize);
-
-            for (int y = 1; y < image->height; y++)
+            for (int y = 0; y < image->height; y++)
             {
-                if (y-blurSize >= 0)
+                if (y-blurSize-1 >= 0)
                 {
-                    avgR -= pixelsCopy2[(y-blurSize)*image->width + col].x;
-                    avgG -= pixelsCopy2[(y-blurSize)*image->width + col].y;
-                    avgB -= pixelsCopy2[(y-blurSize)*image->width + col].z;
-                    avgAlpha -= pixelsCopy2[(y-blurSize)*image->width + col].w;
+                    avgR -= pixelsCopy2[(y-blurSize-1)*image->width + col].x;
+                    avgG -= pixelsCopy2[(y-blurSize-1)*image->width + col].y;
+                    avgB -= pixelsCopy2[(y-blurSize-1)*image->width + col].z;
+                    avgAlpha -= pixelsCopy2[(y-blurSize-1)*image->width + col].w;
                     convolutionSize--;
                 }
                 if (y+blurSize < image->height)