14 files changed, 125 insertions, 24 deletions
diff --git a/examples/web/models/resources/shaders/glsl100/cubemap.fs b/examples/web/models/resources/shaders/glsl100/cubemap.fs
new file mode 100644
index 0000000..402cdea
--- /dev/null
+++ b/examples/web/models/resources/shaders/glsl100/cubemap.fs
@@ -0,0 +1,29 @@
+#version 100
+
+precision mediump float;
+
+// Input vertex attributes (from vertex shader)
+varying vec3 fragPosition;
+
+// Input uniform values
+uniform sampler2D equirectangularMap;
+
+vec2 SampleSphericalMap(vec3 v)
+{
+    vec2 uv = vec2(atan(v.z, v.x), asin(v.y));
+    uv *= vec2(0.1591, 0.3183);
+    uv += 0.5;
+    return uv;
+}
+
+void main()
+{
+    // Normalize local position 
+    vec2 uv = SampleSphericalMap(normalize(fragPosition));
+
+    // Fetch color from texture map
+    vec3 color = texture2D(equirectangularMap, uv).rgb;
+
+    // Calculate final fragment color
+    gl_FragColor = vec4(color, 1.0);
+}
diff --git a/examples/web/models/resources/shaders/glsl100/cubemap.vs b/examples/web/models/resources/shaders/glsl100/cubemap.vs
new file mode 100644
index 0000000..fd8d17e
--- /dev/null
+++ b/examples/web/models/resources/shaders/glsl100/cubemap.vs
@@ -0,0 +1,20 @@
+#version 100
+
+// Input vertex attributes
+attribute vec3 vertexPosition;
+
+// Input uniform values
+uniform mat4 projection;
+uniform mat4 view;
+
+// Output vertex attributes (to fragment shader)
+varying vec3 fragPosition;
+
+void main()
+{
+    // Calculate fragment position based on model transformations
+    fragPosition = vertexPosition;
+
+    // Calculate final vertex position
+    gl_Position = projection*view*vec4(vertexPosition, 1.0);
+}
diff --git a/examples/web/models/resources/shaders/glsl100/skybox.fs b/examples/web/models/resources/shaders/glsl100/skybox.fs
new file mode 100644
index 0000000..1269a96
--- /dev/null
+++ b/examples/web/models/resources/shaders/glsl100/skybox.fs
@@ -0,0 +1,28 @@
+#version 100
+
+precision mediump float;
+
+// Input vertex attributes (from vertex shader)
+varying vec3 fragPosition;
+
+// Input uniform values
+uniform samplerCube environmentMap;
+uniform bool vflipped;
+
+void main()
+{
+    // Fetch color from texture map
+    vec4 texelColor = vec4(0.0);
+
+    if (vflipped) texelColor = textureCube(environmentMap, vec3(fragPosition.x, -fragPosition.y, fragPosition.z));
+    else texelColor = textureCube(environmentMap, fragPosition);
+
+    vec3 color = vec3(texelColor.x, texelColor.y, texelColor.z);
+    
+    // Apply gamma correction
+    color = color/(color + vec3(1.0));
+    color = pow(color, vec3(1.0/2.2));
+
+    // Calculate final fragment color
+    gl_FragColor = vec4(color, 1.0);
+}
diff --git a/examples/web/models/resources/shaders/glsl100/skybox.vs b/examples/web/models/resources/shaders/glsl100/skybox.vs
new file mode 100644
index 0000000..0d00d54
--- /dev/null
+++ b/examples/web/models/resources/shaders/glsl100/skybox.vs
@@ -0,0 +1,24 @@
+#version 100
+
+// Input vertex attributes
+attribute vec3 vertexPosition;
+
+// Input uniform values
+uniform mat4 projection;
+uniform mat4 view;
+
+// Output vertex attributes (to fragment shader)
+varying vec3 fragPosition;
+
+void main()
+{
+    // Calculate fragment position based on model transformations
+    fragPosition = vertexPosition;
+
+    // Remove translation from the view matrix
+    mat4 rotView = mat4(mat3(view));
+    vec4 clipPos = projection*rotView*vec4(vertexPosition, 1.0);
+
+    // Calculate final vertex position
+    gl_Position = clipPos.xyzw;
+}
diff --git a/examples/web/models/resources/shaders/brdf.fs b/examples/web/models/resources/shaders/glsl330/brdf.fs
index d04bc66..d04bc66 100644
--- a/examples/web/models/resources/shaders/brdf.fs
+++ b/examples/web/models/resources/shaders/glsl330/brdf.fs
diff --git a/examples/web/models/resources/shaders/brdf.vs b/examples/web/models/resources/shaders/glsl330/brdf.vs
index 0638467..0638467 100644
--- a/examples/web/models/resources/shaders/brdf.vs
+++ b/examples/web/models/resources/shaders/glsl330/brdf.vs
diff --git a/examples/web/models/resources/shaders/cubemap.fs b/examples/web/models/resources/shaders/glsl330/cubemap.fs
index e8e2853..e4d4ddd 100644
--- a/examples/web/models/resources/shaders/cubemap.fs
+++ b/examples/web/models/resources/shaders/glsl330/cubemap.fs
@@ -1,11 +1,3 @@
-/*******************************************************************************************
-*
-*   rPBR [shader] - Equirectangular to cubemap fragment shader
-*
-*   Copyright (c) 2017 Victor Fisac
-*
-**********************************************************************************************/
-
 #version 330
 
 // Input vertex attributes (from vertex shader)
diff --git a/examples/web/models/resources/shaders/cubemap.vs b/examples/web/models/resources/shaders/glsl330/cubemap.vs
index 5721eaa..5721eaa 100644
--- a/examples/web/models/resources/shaders/cubemap.vs
+++ b/examples/web/models/resources/shaders/glsl330/cubemap.vs
diff --git a/examples/web/models/resources/shaders/irradiance.fs b/examples/web/models/resources/shaders/glsl330/irradiance.fs
index b42d214..4ef03e0 100644
--- a/examples/web/models/resources/shaders/irradiance.fs
+++ b/examples/web/models/resources/shaders/glsl330/irradiance.fs
@@ -15,7 +15,7 @@ in vec3 fragPosition;
 uniform samplerCube environmentMap;
 
 // Constant values
-const float PI = 3.14159265359f;
+const float PI = 3.14159265359;
 
 // Output fragment color
 out vec4 finalColor;
@@ -31,8 +31,8 @@ void main()
     vec3 right = cross(up, normal);
     up = cross(normal, right);
 
-    float sampleDelta = 0.025f;
-    float nrSamples = 0.0f; 
+    float sampleDelta = 0.025;
+    float nrSamples = 0.0; 
 
     for (float phi = 0.0; phi < 2.0*PI; phi += sampleDelta)
     {
diff --git a/examples/web/models/resources/shaders/pbr.fs b/examples/web/models/resources/shaders/glsl330/pbr.fs
index 38d56c5..68bf203 100644
--- a/examples/web/models/resources/shaders/pbr.fs
+++ b/examples/web/models/resources/shaders/glsl330/pbr.fs
@@ -73,6 +73,8 @@ vec3 fresnelSchlick(float cosTheta, vec3 F0);
 vec3 fresnelSchlickRoughness(float cosTheta, vec3 F0, float roughness);
 vec2 ParallaxMapping(vec2 texCoords, vec3 viewDir);
 
+// WARNING: There is some weird behaviour with this function, always returns black!
+// Yes, I even tried: return texture(property.sampler, texCoord).rgb;
 vec3 ComputeMaterialProperty(MaterialProperty property)
 {
     vec3 result = vec3(0.0, 0.0, 0.0);
@@ -187,17 +189,17 @@ void main()
     else texCoord = fragTexCoord;   // Use default texture coordinates
 
     // Fetch material values from texture sampler or color attributes
-    vec3 color = ComputeMaterialProperty(albedo);
-    vec3 metal = ComputeMaterialProperty(metalness);
-    vec3 rough = ComputeMaterialProperty(roughness);
-    vec3 emiss = ComputeMaterialProperty(emission);
-    vec3 ao = ComputeMaterialProperty(occlusion);
+    vec3 color = texture(albedo.sampler, texCoord).rgb; //ComputeMaterialProperty(albedo);
+    vec3 metal = texture(metalness.sampler, texCoord).rgb; //ComputeMaterialProperty(metalness);
+    vec3 rough = texture(roughness.sampler, texCoord).rgb; //ComputeMaterialProperty(roughness);
+    vec3 emiss = texture(emission.sampler, texCoord).rgb; //ComputeMaterialProperty(emission);
+    vec3 ao = texture(occlusion.sampler, texCoord).rgb; //ComputeMaterialProperty(occlusion);
 
     // Check if normal mapping is enabled
     if (normals.useSampler == 1)
     {
         // Fetch normal map color and transform lighting values to tangent space
-        normal = ComputeMaterialProperty(normals);
+        normal = texture(normals.sampler, texCoord).rgb; //ComputeMaterialProperty(normals);
         normal = normalize(normal*2.0 - 1.0);
         normal = normalize(normal*TBN);
 
diff --git a/examples/web/models/resources/shaders/pbr.vs b/examples/web/models/resources/shaders/glsl330/pbr.vs
index 8bd3faa..045428c 100644
--- a/examples/web/models/resources/shaders/pbr.vs
+++ b/examples/web/models/resources/shaders/glsl330/pbr.vs
@@ -34,7 +34,7 @@ void main()
     mat3 normalMatrix = transpose(inverse(mat3(matModel)));
 
     // Calculate fragment position based on model transformations
-    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0f));
+    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0));
 
     // Send vertex attributes to fragment shader
     fragTexCoord = vertexTexCoord;
diff --git a/examples/web/models/resources/shaders/prefilter.fs b/examples/web/models/resources/shaders/glsl330/prefilter.fs
index 9439810..941ea86 100644
--- a/examples/web/models/resources/shaders/prefilter.fs
+++ b/examples/web/models/resources/shaders/glsl330/prefilter.fs
@@ -18,7 +18,7 @@ uniform samplerCube environmentMap;
 uniform float roughness;
 
 // Constant values
-const float PI = 3.14159265359f;
+const float PI = 3.14159265359;
 
 // Output fragment color
 out vec4 finalColor;
@@ -35,7 +35,7 @@ float DistributionGGX(vec3 N, vec3 H, float roughness)
     float NdotH = max(dot(N, H), 0.0);
     float NdotH2 = NdotH*NdotH;
 
-    float nom   = a2;
+    float nom = a2;
     float denom = (NdotH2*(a2 - 1.0) + 1.0);
     denom = PI*denom*denom;
 
@@ -49,7 +49,7 @@ float RadicalInverse_VdC(uint bits)
      bits = ((bits & 0x33333333u) << 2u) | ((bits & 0xCCCCCCCCu) >> 2u);
      bits = ((bits & 0x0F0F0F0Fu) << 4u) | ((bits & 0xF0F0F0F0u) >> 4u);
      bits = ((bits & 0x00FF00FFu) << 8u) | ((bits & 0xFF00FF00u) >> 8u);
-     return float(bits) * 2.3283064365386963e-10; // / 0x100000000
+     return float(bits)*2.3283064365386963e-10; // / 0x100000000
 }
 
 vec2 Hammersley(uint i, uint N)
@@ -60,7 +60,7 @@ vec2 Hammersley(uint i, uint N)
 vec3 ImportanceSampleGGX(vec2 Xi, vec3 N, float roughness)
 {
 	float a = roughness*roughness;
-	float phi = 2.0 * PI * Xi.x;
+	float phi = 2.0*PI*Xi.x;
 	float cosTheta = sqrt((1.0 - Xi.y)/(1.0 + (a*a - 1.0)*Xi.y));
 	float sinTheta = sqrt(1.0 - cosTheta*cosTheta);
 
diff --git a/examples/web/models/resources/shaders/skybox.fs b/examples/web/models/resources/shaders/glsl330/skybox.fs
index 053a251..c7a1788 100644
--- a/examples/web/models/resources/shaders/skybox.fs
+++ b/examples/web/models/resources/shaders/glsl330/skybox.fs
@@ -4,6 +4,8 @@
 *
 *   Copyright (c) 2017 Victor Fisac
 *
+*	19-Jun-2020 - modified by Giuseppe Mastrangelo (@peppemas) - VFlip Support
+*
 **********************************************************************************************/
 
 #version 330
@@ -13,6 +15,7 @@ in vec3 fragPosition;
 
 // Input uniform values
 uniform samplerCube environmentMap;
+uniform bool vflipped;
 
 // Output fragment color
 out vec4 finalColor;
@@ -20,7 +23,10 @@ out vec4 finalColor;
 void main()
 {
     // Fetch color from texture map
-    vec3 color = texture(environmentMap, fragPosition).rgb;
+    vec3 color = vec3(0.0);
+
+    if (vflipped) color = texture(environmentMap, vec3(fragPosition.x, -fragPosition.y, fragPosition.z)).rgb;
+    else color = texture(environmentMap, fragPosition).rgb;
 
     // Apply gamma correction
     color = color/(color + vec3(1.0));
diff --git a/examples/web/models/resources/shaders/skybox.vs b/examples/web/models/resources/shaders/glsl330/skybox.vs
index dcbe6c3..4fe9a2c 100644
--- a/examples/web/models/resources/shaders/skybox.vs
+++ b/examples/web/models/resources/shaders/glsl330/skybox.vs
@@ -28,5 +28,5 @@ void main()
     vec4 clipPos = projection*rotView*vec4(vertexPosition, 1.0);
 
     // Calculate final vertex position
-    gl_Position = clipPos.xyww;
+    gl_Position = clipPos.xyzw;
 }