Sync of all the shaders from upstream + LoadFontData did not match anymore with C and crashed on MacOS

Examples/resources/shaders/glsl100/base.fs

@@ -10,7 +10,7 @@ varying vec4 fragColor;
 uniform sampler2D texture0;
 uniform vec4 colDiffuse;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 void main()
 {

Examples/resources/shaders/glsl100/base.vs

@@ -13,7 +13,7 @@ uniform mat4 mvp;
 varying vec2 fragTexCoord;
 varying vec4 fragColor;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 void main()
 {

Examples/resources/shaders/glsl100/bloom.fs

@@ -10,11 +10,11 @@ varying vec4 fragColor;
 uniform sampler2D texture0;
 uniform vec4 colDiffuse;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
-const vec2 size = vec2(800, 450);   // render size
-const float samples = 5.0;          // pixels per axis; higher = bigger glow, worse performance
-const float quality = 2.5;             // lower = smaller glow, better quality
+const vec2 size = vec2(800, 450);   // Framebuffer size
+const float samples = 5.0;          // Pixels per axis; higher = bigger glow, worse performance
+const float quality = 2.5;          // Defines size factor: Lower = smaller glow, better quality
 
 void main()
 {

Examples/resources/shaders/glsl100/blur.fs

@@ -10,7 +10,7 @@ varying vec4 fragColor;
 uniform sampler2D texture0;
 uniform vec4 colDiffuse;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 // NOTE: Render size values must be passed from code
 const float renderWidth = 800.0;

Examples/resources/shaders/glsl100/cross_hatching.fs

@@ -10,7 +10,7 @@ varying vec4 fragColor;
 uniform sampler2D texture0;
 uniform vec4 colDiffuse;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 float hatchOffsetY = 5.0;
 float lumThreshold01 = 0.9;

Examples/resources/shaders/glsl100/cross_stitching.fs

@@ -10,7 +10,7 @@ varying vec4 fragColor;
 uniform sampler2D texture0;
 uniform vec4 colDiffuse;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 // NOTE: Render size values must be passed from code
 const float renderWidth = 800.0;
@@ -23,8 +23,8 @@ vec4 PostFX(sampler2D tex, vec2 uv)
 {
     vec4 c = vec4(0.0);
     float size = stitchingSize;
-    vec2 cPos = uv * vec2(renderWidth, renderHeight);
-    vec2 tlPos = floor(cPos / vec2(size, size));
+    vec2 cPos = uv*vec2(renderWidth, renderHeight);
+    vec2 tlPos = floor(cPos/vec2(size, size));
     tlPos *= size;
 
     int remX = int(mod(cPos.x, size));
@@ -38,11 +38,11 @@ vec4 PostFX(sampler2D tex, vec2 uv)
     if ((remX == remY) || (((int(cPos.x) - int(blPos.x)) == (int(blPos.y) - int(cPos.y)))))
     {
         if (invert == 1) c = vec4(0.2, 0.15, 0.05, 1.0);
-        else c = texture2D(tex, tlPos * vec2(1.0/renderWidth, 1.0/renderHeight)) * 1.4;
+        else c = texture2D(tex, tlPos*vec2(1.0/renderWidth, 1.0/renderHeight))*1.4;
     }
     else
     {
-        if (invert == 1) c = texture2D(tex, tlPos * vec2(1.0/renderWidth, 1.0/renderHeight)) * 1.4;
+        if (invert == 1) c = texture2D(tex, tlPos*vec2(1.0/renderWidth, 1.0/renderHeight))*1.4;
         else c = vec4(0.0, 0.0, 0.0, 1.0);
     }
 

Examples/resources/shaders/glsl100/cubes_panning.fs

@@ -16,7 +16,7 @@ float angle = 0.0;
 vec2 VectorRotateTime(vec2 v, float speed)
 {
     float time = uTime*speed;
-    float localTime = fract(time);  // The time domain this works on is 1 sec.
+    float localTime = fract(time);  // The time domain this works on is 1 sec
 
     if ((localTime >= 0.0) && (localTime < 0.25)) angle = 0.0;
     else if ((localTime >= 0.25) && (localTime < 0.50)) angle = PI/4.0*sin(2.0*PI*localTime - PI/2.0);

Examples/resources/shaders/glsl100/dream_vision.fs

@@ -10,7 +10,7 @@ varying vec4 fragColor;
 uniform sampler2D texture0;
 uniform vec4 colDiffuse;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 void main()
 {
@@ -34,4 +34,4 @@ void main()
     color = color/9.5;
 
     gl_FragColor = color;
-}
+}            

Examples/resources/shaders/glsl100/eratosthenes.fs

@@ -7,12 +7,12 @@ precision mediump float;
   The Sieve of Eratosthenes -- a simple shader by ProfJski
   An early prime number sieve: https://en.wikipedia.org/wiki/Sieve_of_Eratosthenes
 
-  The screen is divided into a square grid of boxes, each representing an integer value.
-  Each integer is tested to see if it is a prime number.  Primes are colored white.
-  Non-primes are colored with a color that indicates the smallest factor which evenly divdes our integer.
+  The screen is divided into a square grid of boxes, each representing an integer value
+  Each integer is tested to see if it is a prime number.  Primes are colored white
+  Non-primes are colored with a color that indicates the smallest factor which evenly divdes our integer
 
-  You can change the scale variable to make a larger or smaller grid.
-  Total number of integers displayed = scale squared, so scale = 100 tests the first 10,000 integers.
+  You can change the scale variable to make a larger or smaller grid
+  Total number of integers displayed = scale squared, so scale = 100 tests the first 10,000 integers
 
   WARNING: If you make scale too large, your GPU may bog down!
 
@@ -38,7 +38,7 @@ vec4 Colorizer(float counter, float maxSize)
 void main()
 {
     vec4 color = vec4(1.0);
-    float scale = 1000.0; // Makes 100x100 square grid. Change this variable to make a smaller or larger grid.
+    float scale = 1000.0; // Makes 100x100 square grid. Change this variable to make a smaller or larger grid
     float value = scale*floor(fragTexCoord.y*scale) + floor(fragTexCoord.x*scale);  // Group pixels into boxes representing integer values
     int valuei = int(value);
 

Examples/resources/shaders/glsl100/fisheye.fs

@@ -10,29 +10,29 @@ varying vec4 fragColor;
 uniform sampler2D texture0;
 uniform vec4 colDiffuse;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 const float PI = 3.1415926535;
 
 void main()
 {
     float aperture = 178.0;
-    float apertureHalf = 0.5 * aperture * (PI / 180.0);
+    float apertureHalf = 0.5*aperture*(PI/180.0);
     float maxFactor = sin(apertureHalf);
 
     vec2 uv = vec2(0.0);
-    vec2 xy = 2.0 * fragTexCoord.xy - 1.0;
+    vec2 xy = 2.0*fragTexCoord.xy - 1.0;
     float d = length(xy);
 
     if (d < (2.0 - maxFactor))
     {
-        d = length(xy * maxFactor);
-        float z = sqrt(1.0 - d * d);
-        float r = atan(d, z) / PI;
+        d = length(xy*maxFactor);
+        float z = sqrt(1.0 - d*d);
+        float r = atan(d, z)/PI;
         float phi = atan(xy.y, xy.x);
 
-        uv.x = r * cos(phi) + 0.5;
-        uv.y = r * sin(phi) + 0.5;
+        uv.x = r*cos(phi) + 0.5;
+        uv.y = r*sin(phi) + 0.5;
     }
     else
     {

Examples/resources/shaders/glsl100/fog.fs

@@ -12,7 +12,7 @@ varying vec3 fragNormal;
 uniform sampler2D texture0;
 uniform vec4 colDiffuse;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 #define     MAX_LIGHTS              4
 #define     LIGHT_DIRECTIONAL       0

Examples/resources/shaders/glsl100/grayscale.fs

@@ -10,7 +10,7 @@ varying vec4 fragColor;
 uniform sampler2D texture0;
 uniform vec4 colDiffuse;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 void main()
 {

Examples/resources/shaders/glsl100/hybrid_raster.fs

@@ -1,5 +1,7 @@
 #version 100
+
 #extension GL_EXT_frag_depth : enable   // Extension required for writing depth
+
 precision mediump float;                // Precision required for OpenGL ES2 (WebGL)
 
 varying vec2 fragTexCoord;
@@ -11,6 +13,7 @@ uniform vec4 colDiffuse;
 void main()
 {
     vec4 texelColor = texture2D(texture0, fragTexCoord);
+
     gl_FragColor = texelColor*colDiffuse*fragColor;
-	gl_FragDepthEXT = gl_FragCoord.z;
+    gl_FragDepthEXT = gl_FragCoord.z;
 }

Examples/resources/shaders/glsl100/hybrid_raymarch.fs

@@ -1,8 +1,11 @@
 #version 100
+
 #extension GL_EXT_frag_depth : enable           //Extension required for writing depth
 #extension GL_OES_standard_derivatives : enable //Extension used for fwidth()
-precision mediump float;                // Precision required for OpenGL ES2 (WebGL)
 
+#define ZERO 0
+
+precision mediump float;                // Precision required for OpenGL ES2 (WebGL)
 
 // Input vertex attributes (from vertex shader)
 varying vec2 fragTexCoord;
@@ -17,23 +20,22 @@ uniform vec3 camPos;
 uniform vec3 camDir;
 uniform vec2 screenCenter;
 
-#define ZERO 0
-
-// https://learnopengl.com/Advanced-OpenGL/Depth-testing
-float CalcDepth(in vec3 rd, in float Idist){
+// SRC: https://learnopengl.com/Advanced-OpenGL/Depth-testing
+float CalcDepth(in vec3 rd, in float Idist)
+{
     float local_z = dot(normalize(camDir),rd)*Idist;
     return (1.0/(local_z) - 1.0/0.01)/(1.0/1000.0 -1.0/0.01);
 }
 
-// https://iquilezles.org/articles/distfunctions/
-float sdHorseshoe( in vec3 p, in vec2 c, in float r, in float le, vec2 w )
+// SRC: https://iquilezles.org/articles/distfunctions/
+float sdHorseshoe(in vec3 p, in vec2 c, in float r, in float le, vec2 w)
 {
     p.x = abs(p.x);
     float l = length(p.xy);
     p.xy = mat2(-c.x, c.y,
               c.y, c.x)*p.xy;
     p.xy = vec2((p.y>0.0 || p.x>0.0)?p.x:l*sign(-c.x),
-                (p.x>0.0)?p.y:l );
+                (p.x>0.0)?p.y:l);
     p.xy = vec2(p.x,abs(p.y-r))-vec2(le,0.0);
 
     vec2 q = vec2(length(max(p.xy,0.0)) + min(0.0,max(p.x,p.y)),p.z);
@@ -44,67 +46,70 @@ float sdHorseshoe( in vec3 p, in vec2 c, in float r, in float le, vec2 w )
 // r = sphere's radius
 // h = cutting's plane's position
 // t = thickness
-float sdSixWayCutHollowSphere( vec3 p, float r, float h, float t )
+float sdSixWayCutHollowSphere(vec3 p, float r, float h, float t)
 {
     // Six way symetry Transformation
     vec3 ap = abs(p);
-    if(ap.x < max(ap.y, ap.z)){
-        if(ap.y < ap.z) ap.xz = ap.zx;
+    if (ap.x < max(ap.y, ap.z)){
+        if (ap.y < ap.z) ap.xz = ap.zx;
         else ap.xy = ap.yx;
     }
 
-    vec2 q = vec2( length(ap.yz), ap.x );
+    vec2 q = vec2(length(ap.yz), ap.x);
 
     float w = sqrt(r*r-h*h);
 
-    return ((h*q.x<w*q.y) ? length(q-vec2(w,h)) :
-                            abs(length(q)-r) ) - t;
+    return ((h*q.x<w*q.y) ? length(q-vec2(w,h)) : abs(length(q)-r)) - t;
 }
 
-// https://iquilezles.org/articles/boxfunctions
-vec2 iBox( in vec3 ro, in vec3 rd, in vec3 rad )
+// SRC: https://iquilezles.org/articles/boxfunctions
+vec2 iBox(in vec3 ro, in vec3 rd, in vec3 rad)
 {
     vec3 m = 1.0/rd;
     vec3 n = m*ro;
     vec3 k = abs(m)*rad;
     vec3 t1 = -n - k;
     vec3 t2 = -n + k;
-	return vec2( max( max( t1.x, t1.y ), t1.z ),
-	             min( min( t2.x, t2.y ), t2.z ) );
+
+    return vec2(max(max(t1.x, t1.y), t1.z),
+                 min(min(t2.x, t2.y), t2.z));
 }
 
-vec2 opU( vec2 d1, vec2 d2 )
+vec2 opU(vec2 d1, vec2 d2)
 {
-	return (d1.x<d2.x) ? d1 : d2;
+    return (d1.x<d2.x) ? d1 : d2;
 }
 
-vec2 map( in vec3 pos ){
-    vec2 res = vec2( sdHorseshoe(  pos-vec3(-1.0,0.08, 1.0), vec2(cos(1.3),sin(1.3)), 0.2, 0.3, vec2(0.03,0.5) ), 11.5 ) ;
-    res = opU(res, vec2( sdSixWayCutHollowSphere(  pos-vec3(0.0, 1.0, 0.0), 4.0, 3.5, 0.5 ), 4.5 )) ;
+vec2 map(in vec3 pos)
+{
+    vec2 res = vec2(sdHorseshoe(pos-vec3(-1.0,0.08, 1.0), vec2(cos(1.3),sin(1.3)), 0.2, 0.3, vec2(0.03,0.5)), 11.5) ;
+    res = opU(res, vec2(sdSixWayCutHollowSphere(pos-vec3(0.0, 1.0, 0.0), 4.0, 3.5, 0.5), 4.5)) ;
+
     return res;
 }
 
-// https://www.shadertoy.com/view/Xds3zN
-vec2 raycast( in vec3 ro, in vec3 rd ){
+// SRC: https://www.shadertoy.com/view/Xds3zN
+vec2 raycast(in vec3 ro, in vec3 rd)
+{
     vec2 res = vec2(-1.0,-1.0);
 
     float tmin = 1.0;
     float tmax = 20.0;
 
-    // raytrace floor plane
+    // Raytrace floor plane
     float tp1 = (-ro.y)/rd.y;
-    if( tp1>0.0 )
+    if (tp1>0.0)
     {
-        tmax = min( tmax, tp1 );
-        res = vec2( tp1, 1.0 );
+        tmax = min(tmax, tp1);
+        res = vec2(tp1, 1.0);
     }
 
     float t = tmin;
-    for( int i=0; i<70 ; i++ )
+    for (int i=0; i<70 ; i++)
     {
-        if(t>tmax) break;
-        vec2 h = map( ro+rd*t );
-        if( abs(h.x)<(0.0001*t) )
+        if (t>tmax) break;
+        vec2 h = map(ro+rd*t);
+        if (abs(h.x) < (0.0001*t))
         {
             res = vec2(t,h.y);
             break;
@@ -117,54 +122,54 @@ vec2 raycast( in vec3 ro, in vec3 rd ){
 
 
 // https://iquilezles.org/articles/rmshadows
-float calcSoftshadow( in vec3 ro, in vec3 rd, in float mint, in float tmax )
+float calcSoftshadow(in vec3 ro, in vec3 rd, in float mint, in float tmax)
 {
     // bounding volume
-    float tp = (0.8-ro.y)/rd.y; if( tp>0.0 ) tmax = min( tmax, tp );
+    float tp = (0.8-ro.y)/rd.y; if (tp>0.0) tmax = min(tmax, tp);
 
     float res = 1.0;
     float t = mint;
-    for( int i=ZERO; i<24; i++ )
+    for (int i = ZERO; i < 24; i++)
     {
-		float h = map( ro + rd*t ).x;
+        float h = map(ro + rd*t).x;
         float s = clamp(8.0*h/t,0.0,1.0);
-        res = min( res, s );
-        t += clamp( h, 0.01, 0.2 );
-        if( res<0.004 || t>tmax ) break;
+        res = min(res, s);
+        t += clamp(h, 0.01, 0.2);
+        if (res<0.004 || t>tmax) break;
     }
-    res = clamp( res, 0.0, 1.0 );
+    res = clamp(res, 0.0, 1.0);
     return res*res*(3.0-2.0*res);
 }
 
 
 // https://iquilezles.org/articles/normalsSDF
-vec3 calcNormal( in vec3 pos )
+vec3 calcNormal(in vec3 pos)
 {
     vec2 e = vec2(1.0,-1.0)*0.5773*0.0005;
-    return normalize( e.xyy*map( pos + e.xyy ).x +
-					  e.yyx*map( pos + e.yyx ).x +
-					  e.yxy*map( pos + e.yxy ).x +
-					  e.xxx*map( pos + e.xxx ).x );
+    return normalize(e.xyy*map(pos + e.xyy).x +
+                     e.yyx*map(pos + e.yyx).x +
+                     e.yxy*map(pos + e.yxy).x +
+                     e.xxx*map(pos + e.xxx).x);
 }
 
 // https://iquilezles.org/articles/nvscene2008/rwwtt.pdf
-float calcAO( in vec3 pos, in vec3 nor )
+float calcAO(in vec3 pos, in vec3 nor)
 {
-	float occ = 0.0;
+    float occ = 0.0;
     float sca = 1.0;
-    for( int i=ZERO; i<5; i++ )
+    for (int i = ZERO; i < 5; i++)
     {
         float h = 0.01 + 0.12*float(i)/4.0;
-        float d = map( pos + h*nor ).x;
+        float d = map(pos + h*nor).x;
         occ += (h-d)*sca;
         sca *= 0.95;
-        if( occ>0.35 ) break;
+        if (occ>0.35) break;
     }
-    return clamp( 1.0 - 3.0*occ, 0.0, 1.0 ) * (0.5+0.5*nor.y);
+    return clamp(1.0 - 3.0*occ, 0.0, 1.0)*(0.5+0.5*nor.y);
 }
 
 // https://iquilezles.org/articles/checkerfiltering
-float checkersGradBox( in vec2 p )
+float checkersGradBox(in vec2 p)
 {
     // filter kernel
     vec2 w = fwidth(p) + 0.001;
@@ -175,7 +180,7 @@ float checkersGradBox( in vec2 p )
 }
 
 // https://www.shadertoy.com/view/tdS3DG
-vec4 render( in vec3 ro, in vec3 rd)
+vec4 render(in vec3 ro, in vec3 rd)
 {
     // background
     vec3 col = vec3(0.7, 0.7, 0.9) - max(rd.y,0.0)*0.3;
@@ -183,37 +188,37 @@ vec4 render( in vec3 ro, in vec3 rd)
     // raycast scene
     vec2 res = raycast(ro,rd);
     float t = res.x;
-	float m = res.y;
-    if( m>-0.5 )
+    float m = res.y;
+    if (m>-0.5)
     {
         vec3 pos = ro + t*rd;
-        vec3 nor = (m<1.5) ? vec3(0.0,1.0,0.0) : calcNormal( pos );
-        vec3 ref = reflect( rd, nor );
+        vec3 nor = (m<1.5) ? vec3(0.0,1.0,0.0) : calcNormal(pos);
+        vec3 ref = reflect(rd, nor);
 
         // material
-        col = 0.2 + 0.2*sin( m*2.0 + vec3(0.0,1.0,2.0) );
+        col = 0.2 + 0.2*sin(m*2.0 + vec3(0.0,1.0,2.0));
         float ks = 1.0;
 
-        if( m<1.5 )
+        if (m<1.5)
         {
-            float f = checkersGradBox( 3.0*pos.xz);
+            float f = checkersGradBox(3.0*pos.xz);
             col = 0.15 + f*vec3(0.05);
             ks = 0.4;
         }
 
         // lighting
-        float occ = calcAO( pos, nor );
+        float occ = calcAO(pos, nor);
 
-		vec3 lin = vec3(0.0);
+        vec3 lin = vec3(0.0);
 
         // sun
         {
-            vec3  lig = normalize( vec3(-0.5, 0.4, -0.6) );
-            vec3  hal = normalize( lig-rd );
-            float dif = clamp( dot( nor, lig ), 0.0, 1.0 );
-          //if( dif>0.0001 )
-        	      dif *= calcSoftshadow( pos, lig, 0.02, 2.5 );
-			float spe = pow( clamp( dot( nor, hal ), 0.0, 1.0 ),16.0);
+            vec3  lig = normalize(vec3(-0.5, 0.4, -0.6));
+            vec3  hal = normalize(lig-rd);
+            float dif = clamp(dot(nor, lig), 0.0, 1.0);
+            //if (dif>0.0001)
+                dif *= calcSoftshadow(pos, lig, 0.02, 2.5);
+            float spe = pow(clamp(dot(nor, hal), 0.0, 1.0),16.0);
                   spe *= dif;
                   spe *= 0.04+0.96*pow(clamp(1.0-dot(hal,lig),0.0,1.0),5.0);
                 //spe *= 0.04+0.96*pow(clamp(1.0-sqrt(0.5*(1.0-dot(rd,lig))),0.0,1.0),5.0);
@@ -222,38 +227,39 @@ vec4 render( in vec3 ro, in vec3 rd)
         }
         // sky
         {
-            float dif = sqrt(clamp( 0.5+0.5*nor.y, 0.0, 1.0 ));
+            float dif = sqrt(clamp(0.5+0.5*nor.y, 0.0, 1.0));
                   dif *= occ;
-            float spe = smoothstep( -0.2, 0.2, ref.y );
+            float spe = smoothstep(-0.2, 0.2, ref.y);
                   spe *= dif;
-                  spe *= 0.04+0.96*pow(clamp(1.0+dot(nor,rd),0.0,1.0), 5.0 );
-          //if( spe>0.001 )
-                  spe *= calcSoftshadow( pos, ref, 0.02, 2.5 );
+                  spe *= 0.04+0.96*pow(clamp(1.0+dot(nor,rd),0.0,1.0), 5.0);
+          //if (spe>0.001)
+                  spe *= calcSoftshadow(pos, ref, 0.02, 2.5);
             lin += col*0.60*dif*vec3(0.40,0.60,1.15);
             lin +=     2.00*spe*vec3(0.40,0.60,1.30)*ks;
         }
         // back
         {
-        	float dif = clamp( dot( nor, normalize(vec3(0.5,0.0,0.6))), 0.0, 1.0 )*clamp( 1.0-pos.y,0.0,1.0);
+            float dif = clamp(dot(nor, normalize(vec3(0.5,0.0,0.6))), 0.0, 1.0)*clamp(1.0-pos.y,0.0,1.0);
                   dif *= occ;
-        	lin += col*0.55*dif*vec3(0.25,0.25,0.25);
+            lin += col*0.55*dif*vec3(0.25,0.25,0.25);
         }
         // sss
         {
             float dif = pow(clamp(1.0+dot(nor,rd),0.0,1.0),2.0);
                   dif *= occ;
-        	lin += col*0.25*dif*vec3(1.00,1.00,1.00);
+            lin += col*0.25*dif*vec3(1.00,1.00,1.00);
         }
 
-		col = lin;
+        col = lin;
 
-        col = mix( col, vec3(0.7,0.7,0.9), 1.0-exp( -0.0001*t*t*t ) );
+        col = mix(col, vec3(0.7,0.7,0.9), 1.0-exp(-0.0001*t*t*t));
     }
 
-	return vec4(vec3( clamp(col,0.0,1.0) ),t);
+    return vec4(vec3(clamp(col,0.0,1.0)),t);
 }
 
-vec3 CalcRayDir(vec2 nCoord){
+vec3 CalcRayDir(vec2 nCoord)
+{
     vec3 horizontal = normalize(cross(camDir,vec3(.0 , 1.0, .0)));
     vec3 vertical   = normalize(cross(horizontal,camDir));
     return normalize(camDir + horizontal*nCoord.x + vertical*nCoord.y);
@@ -261,11 +267,11 @@ vec3 CalcRayDir(vec2 nCoord){
 
 mat3 setCamera()
 {
-	vec3 cw = normalize(camDir);
-	vec3 cp = vec3(0.0, 1.0 ,0.0);
-	vec3 cu = normalize( cross(cw,cp) );
-	vec3 cv =          ( cross(cu,cw) );
-    return mat3( cu, cv, cw );
+    vec3 cw = normalize(camDir);
+    vec3 cp = vec3(0.0, 1.0 ,0.0);
+    vec3 cu = normalize(cross(cw,cp));
+    vec3 cv =          (cross(cu,cw));
+    return mat3(cu, cv, cw);
 }
 
 void main()
@@ -275,14 +281,15 @@ void main()
 
     // focal length
     float fl = length(camDir);
-    vec3 rd = ca * normalize( vec3(nCoord,fl) );
+    vec3 rd = ca*normalize(vec3(nCoord,fl));
     vec3 color = vec3(nCoord/2.0 + 0.5, 0.0);
     float depth = gl_FragCoord.z;
     {
-        vec4 res = render( camPos - vec3(0.0, 0.0, 0.0) , rd );
+        vec4 res = render(camPos - vec3(0.0, 0.0, 0.0) , rd);
         color = res.xyz;
         depth = CalcDepth(rd,res.w);
     }
+
     gl_FragColor = vec4(color , 1.0);
-	gl_FragDepthEXT = depth;
+    gl_FragDepthEXT = depth;
 }

Examples/resources/shaders/glsl100/julia_set.fs

@@ -6,59 +6,58 @@ precision mediump float;
 varying vec2 fragTexCoord;
 varying vec4 fragColor;
 
-uniform vec2 screenDims;        // Dimensions of the screen
 uniform vec2 c;                 // c.x = real, c.y = imaginary component. Equation done is z^2 + c
-uniform vec2 offset;            // Offset of the scale.
-uniform float zoom;             // Zoom of the scale.
+uniform vec2 offset;            // Offset of the scale
+uniform float zoom;             // Zoom of the scale
 
 // NOTE: Maximum number of shader for-loop iterations depend on GPU,
 // for example, on RasperryPi for this examply only supports up to 60
-const int MAX_ITERATIONS = 48;  // Max iterations to do
+const int maxIterations = 255;  // Max iterations to do.
+const float colorCycles = 1.0;  // Number of times the color palette repeats.
 
 // Square a complex number
 vec2 ComplexSquare(vec2 z)
 {
-    return vec2(
-        z.x * z.x - z.y * z.y,
-        z.x * z.y * 2.0
-    );
+    return vec2(z.x*z.x - z.y*z.y, z.x*z.y*2.0);
 }
 
 // Convert Hue Saturation Value (HSV) color into RGB
 vec3 Hsv2rgb(vec3 c)
 {
-    vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
-    vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
-    return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
+    vec4 K = vec4(1.0, 2.0/3.0, 1.0/3.0, 3.0);
+    vec3 p = abs(fract(c.xxx + K.xyz)*6.0 - K.www);
+    return c.z*mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
 }
 
 void main()
 {
     /**********************************************************************************************
-      Julia sets use a function z^2 + c, where c is a constant.
-      This function is iterated until the nature of the point is determined.
+      Julia sets use a function z^2 + c, where c is a constant
+      This function is iterated until the nature of the point is determined
 
       If the magnitude of the number becomes greater than 2, then from that point onward
-      the number will get bigger and bigger, and will never get smaller (tends towards infinity).
-      2^2 = 4, 4^2 = 8 and so on.
-      So at 2 we stop iterating.
+      the number will get bigger and bigger, and will never get smaller (tends towards infinity)
+      2^2 = 4, 4^2 = 8 and so on
+      So at 2 we stop iterating
 
-      If the number is below 2, we keep iterating.
+      If the number is below 2, we keep iterating
       But when do we stop iterating if the number is always below 2 (it converges)?
-      That is what MAX_ITERATIONS is for.
-      Then we can divide the iterations by the MAX_ITERATIONS value to get a normalized value that we can
-      then map to a color.
+      That is what maxIterations is for
+      Then we can divide the iterations by the maxIterations value to get a normalized value
+      that we can then map to a color
 
-      We use dot product (z.x * z.x + z.y * z.y) to determine the magnitude (length) squared.
-      And once the magnitude squared is > 4, then magnitude > 2 is also true (saves computational power).
+      We use dot product (z.x*z.x + z.y*z.y) to determine the magnitude (length) squared
+      And once the magnitude squared is > 4, then magnitude > 2 is also true (saves computational power)
     *************************************************************************************************/
 
     // The pixel coordinates are scaled so they are on the mandelbrot scale
     // NOTE: fragTexCoord already comes as normalized screen coordinates but offset must be normalized before scaling and zoom
-    vec2 z = vec2((fragTexCoord.x + offset.x/screenDims.x)*2.5/zoom, (fragTexCoord.y + offset.y/screenDims.y)*1.5/zoom);
+    vec2 z = vec2((fragTexCoord.x - 0.5)*2.5, (fragTexCoord.y - 0.5)*1.5)/zoom;
+    z.x += offset.x;
+    z.y += offset.y;
 
     int iter = 0;
-    for (int iterations = 0; iterations < 60; iterations++)
+    for (int iterations = 0; iterations < maxIterations; iterations++)
     {
         z = ComplexSquare(z) + c;  // Iterate function
         if (dot(z, z) > 4.0) break;
@@ -66,18 +65,18 @@ void main()
         iter = iterations;
     }
 
-    // Another few iterations decreases errors in the smoothing calculation.
-    // See http://linas.org/art-gallery/escape/escape.html for more information.
+    // Another few iterations decreases errors in the smoothing calculation
+    // See http://linas.org/art-gallery/escape/escape.html for more information
     z = ComplexSquare(z) + c;
     z = ComplexSquare(z) + c;
 
-    // This last part smooths the color (again see link above).
+    // This last part smooths the color (again see link above)
     float smoothVal = float(iter) + 1.0 - (log(log(length(z)))/log(2.0));
 
-    // Normalize the value so it is between 0 and 1.
-    float norm = smoothVal/float(MAX_ITERATIONS);
+    // Normalize the value so it is between 0 and 1
+    float norm = smoothVal/float(maxIterations);
 
-    // If in set, color black. 0.999 allows for some float accuracy error.
+    // If in set, color black. 0.999 allows for some float accuracy error
     if (norm > 0.999) gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);
-    else gl_FragColor = vec4(Hsv2rgb(vec3(norm, 1.0, 1.0)), 1.0);
+    else gl_FragColor = vec4(Hsv2rgb(vec3(norm*colorCycles, 1.0, 1.0)), 1.0);
 }

Examples/resources/shaders/glsl100/lighting.fs

@@ -12,18 +12,12 @@ varying vec3 fragNormal;
 uniform sampler2D texture0;
 uniform vec4 colDiffuse;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 #define     MAX_LIGHTS              4
 #define     LIGHT_DIRECTIONAL       0
 #define     LIGHT_POINT             1
 
-struct MaterialProperty {
-    vec3 color;
-    int useSampler;
-    sampler2D sampler;
-};
-
 struct Light {
     int enabled;
     int type;
@@ -46,6 +40,8 @@ void main()
     vec3 viewD = normalize(viewPos - fragPosition);
     vec3 specular = vec3(0.0);
 
+    vec4 tint = colDiffuse*fragColor;
+
     // NOTE: Implement here your fragment shader code
 
     for (int i = 0; i < MAX_LIGHTS; i++)
@@ -73,7 +69,7 @@ void main()
         }
     }
 
-    vec4 finalColor = (texelColor*((colDiffuse + vec4(specular, 1.0))*vec4(lightDot, 1.0)));
+    vec4 finalColor = (texelColor*((tint + vec4(specular, 1.0))*vec4(lightDot, 1.0)));
     finalColor += texelColor*(ambient/10.0);
 
     // Gamma correction

Examples/resources/shaders/glsl100/lighting.vs

@@ -16,7 +16,7 @@ varying vec2 fragTexCoord;
 varying vec4 fragColor;
 varying vec3 fragNormal;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 // https://github.com/glslify/glsl-inverse
 mat3 inverse(mat3 m)

Examples/resources/shaders/glsl100/lighting_instancing.vs

@@ -18,7 +18,7 @@ varying vec2 fragTexCoord;
 varying vec4 fragColor;
 varying vec3 fragNormal;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 void main()
 {

Examples/resources/shaders/glsl100/mask.fs

@@ -12,7 +12,7 @@ uniform sampler2D mask;
 uniform vec4 colDiffuse;
 uniform int frame;
 
-// NOTE: Add here your custom variables
+// NOTE: Add your custom variables here
 
 void main()
 {

Examples/resources/shaders/glsl100/palette_switch.fs

@@ -2,7 +2,7 @@
 
 precision mediump float;
 
-const int colors = 8;
+const int MAX_INDEXED_COLORS = 8;
 
 // Input vertex attributes (from vertex shader)
 varying vec2 fragTexCoord;
@@ -10,7 +10,8 @@ varying vec4 fragColor;
 
 // Input uniform values
 uniform sampler2D texture0;
-uniform ivec3 palette[colors];
+uniform ivec3 palette[MAX_INDEXED_COLORS];
+//uniform sampler2D palette; // Alternative to ivec3, palette provided as a 256x1 texture
 
 void main()
 {
@@ -18,13 +19,13 @@ void main()
     vec4 texelColor = texture2D(texture0, fragTexCoord)*fragColor;
 
     // Convert the (normalized) texel color RED component (GB would work, too)
-    // to the palette index by scaling up from [0, 1] to [0, 255].
+    // to the palette index by scaling up from [0..1] to [0..255]
     int index = int(texelColor.r*255.0);
 
     ivec3 color = ivec3(0);
 
     // NOTE: On GLSL 100 we are not allowed to index a uniform array by a variable value,
-    // a constantmust be used, so this logic...
+    // a constant must be used, so this logic...
     if (index == 0) color = palette[0];
     else if (index == 1) color = palette[1];
     else if (index == 2) color = palette[2];
@@ -34,8 +35,9 @@ void main()
     else if (index == 6) color = palette[6];
     else if (index == 7) color = palette[7];
 
+    //gl_FragColor = texture2D(palette, texelColor.xy); // Alternative to ivec3
+
     // Calculate final fragment color. Note that the palette color components
-    // are defined in the range [0, 255] and need to be normalized to [0, 1]
-    // for OpenGL to work.
+    // are defined in the range [0..255] and need to be normalized to [0..1]
     gl_FragColor = vec4(float(color.x)/255.0, float(color.y)/255.0, float(color.z)/255.0, texelColor.a);
 }