convert submodules to normal folders for now

raylib/examples/models/resources/LICENSE.md

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+| resource             | author      | licence | notes |
+| :------------------- | :---------: | :------ | :---- |
+| models/obj/castle.obj,<br>models/obj/castle_diffuse.png | [Alberto Cano](https://www.artstation.com/albertocano) | [CC-BY-NC](https://creativecommons.org/licenses/by-nc/4.0/legalcode) | - |
+| models/obj/bridge.obj,<br>models/obj/bridge_diffuse.png | [Alberto Cano](https://www.artstation.com/albertocano) | [CC-BY-NC](https://creativecommons.org/licenses/by-nc/4.0/legalcode) | - |
+| models/obj/house.obj,<br>models/obj/house_diffuse.png | [Alberto Cano](https://www.artstation.com/albertocano) | [CC-BY-NC](https://creativecommons.org/licenses/by-nc/4.0/legalcode)  | - |
+| models/obj/market.obj,<br>models/obj/market_diffuse.png | [Alberto Cano](https://www.artstation.com/albertocano) | [CC-BY-NC](https://creativecommons.org/licenses/by-nc/4.0/legalcode)  | - |
+| models/obj/turret.obj,<br>models/obj/turret_diffuse.png | [Alberto Cano](https://www.artstation.com/albertocano) | [CC-BY-NC](https://creativecommons.org/licenses/by-nc/4.0/legalcode) | - |
+| models/obj/well.obj,<br>models/obj/well_diffuse.png | [Alberto Cano](https://www.artstation.com/albertocano) | [CC-BY-NC](https://creativecommons.org/licenses/by-nc/4.0/legalcode) | - |
+| models/obj/cube.obj,<br>models/obj/cube_diffuse.png | [@raysan5](https://github.com/raysan5)    | [CC0](https://creativecommons.org/publicdomain/zero/1.0/) | - |
+| models/obj/plane.obj,<br>models/obj/plane_diffuse.png | [GiaHanLam](https://sketchfab.com/GiaHanLam)  | [CC-BY](https://creativecommons.org/licenses/by/4.0/)  | Used by: [`models_yaw_pitch_roll.c`](https://github.com/raysan5/raylib/blob/master/examples/models/models_yaw_pitch_roll.c)
+| models/iqm/guy.iqm,<br>models/iqm/guyanim.iqm,<br>models/iqm/guytex.png,<br>models/iqm/guy.blend | [@culacant](https://github.com/culacant)  | [CC0](https://creativecommons.org/publicdomain/zero/1.0/) | - |
+| models/gltf/robot.glb,<br>models/gltf/robot.blend | [CC0](https://creativecommons.org/publicdomain/zero/1.0/) | - |
+| models/vox/chr_knight.vox |  ❔         | ❔     | - |
+| models/vox/chr_sword.vox  |  ❔         | ❔     | - |
+| models/vox/monu9.vox   |  ❔            | ❔     | - |
+| billboard.png          | [@emegeme](https://github.com/emegeme)    | [CC0](https://creativecommons.org/publicdomain/zero/1.0/)     | - |
+| cubicmap.png           | [@raysan5](https://github.com/raysan5)    | [CC0](https://creativecommons.org/publicdomain/zero/1.0/)     | - |
+| cubicmap_atlas.png     | [@emegeme](https://github.com/emegeme)    | [CC0](https://creativecommons.org/publicdomain/zero/1.0/)     | - |
+| heightmap.png          | [@raysan5](https://github.com/raysan5)    | [CC0](https://creativecommons.org/publicdomain/zero/1.0/)     | - |
+| dresden_square_1k.hdr  | [HDRIHaven](https://hdrihaven.com/hdri/?h=dresden_square) | [CC0](https://hdrihaven.com/p/license.php) | - |
+| dresden_square_2k.hdr  | [HDRIHaven](https://hdrihaven.com/hdri/?h=dresden_square) | [CC0](https://hdrihaven.com/p/license.php) | - |
+| skybox.png             |  ❔            | ❔     | - |

raylib/examples/models/resources/models/gltf/LICENSE

@@ -0,0 +1,5 @@
+robot.glb model by @Quaternius (https://www.patreon.com/quaternius)
+Licensed under CC0 1.0 Universal (CC0 1.0) - Public Domain Dedication (https://creativecommons.org/publicdomain/zero/1.0/)
+
+greenman.glb, greenman_hat.glb, greenman_sword.glb, greenman_shield.glb models by @iP (https://github.com/ipzaur)
+Licensed under CC0 1.0 Universal (CC0 1.0) - Public Domain Dedication (https://creativecommons.org/publicdomain/zero/1.0/)

raylib/examples/models/resources/models/obj/cube.obj

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+# reference material
+#mtllib cube.mtl
+
+# object box
+
+# vertex  (XZY)
+v  5.5  0  1.5
+v  8.5  0  1.5
+v  5.5  0  -1.5
+v  8.5  0  -1.5
+v  5.5  3  1.5
+v  8.5  3  1.5
+v  5.5  3  -1.5
+v  8.5  3  -1.5
+
+# normals  (XYZ)
+vn  0  -1  0
+vn  0  1  0
+vn  0  0  1
+vn  1  0  0
+vn  0  0  -1
+vn  -1  0  0
+
+# UVs (XY)
+vt 0.5  0    0 
+vt 1    0    0
+vt 1    0.5  0
+vt 0.5  0.5  0
+vt 0.5  0.5  0
+vt 1    0.5  0
+vt 0.5  1    0
+vt 1    1    0
+vt 0    0.5  0
+vt 1    0.5  0
+vt 1    0    0
+vt 0    0    0
+vt 0    0.5  0
+vt 1    0.5  0
+vt 1    1    0
+vt 0    1    0
+vt 0.5  0    0
+vt 0    0    0
+vt 0    0.5  0
+vt 0.5  0.5  0
+vt 0    0.5  0
+vt 0.5  0.5  0
+vt 0.5  1    0
+vt 0    1    0
+
+# merger 
+g box
+
+# reference material
+#usemtl mat01
+
+# faces
+f 1/9/1 3/10/1 4/11/1 
+f 4/11/1 2/12/1 1/9/1 
+f 5/13/2 6/14/2 8/15/2 
+f 8/15/2 7/16/2 5/13/2 
+f 1/17/6 2/18/6 6/19/6 
+f 6/19/6 5/20/6 1/17/6 
+f 2/6/1 4/5/1 8/7/1 
+f 8/7/1 6/8/1 2/6/1
+f 4/2/3 3/1/3 7/4/3 
+f 7/4/3 8/3/3 4/2/3 
+f 3/22/5 1/21/5 5/24/5 
+f 5/24/5 7/23/5 3/22/5 

raylib/examples/models/resources/models/vox/LICENSE

@@ -0,0 +1,9 @@
+The following models are provided by the official github repo of voxel-model format by MagikaVoxel developer @ephtracy
+
+GitHub official repo: https://github.com/ephtracy/voxel-model
+
+ - chr_knight.vox - https://github.com/ephtracy/voxel-model/blob/master/vox/character/chr_knight.vox
+ - chr_sword.vox - https://github.com/ephtracy/voxel-model/blob/master/vox/character/chr_sword.vox
+ - monu9.vox - https://github.com/ephtracy/voxel-model/blob/master/vox/monument/monu9.vox
+ 
+Worth mentioning there is no license specified for the models yet: https://github.com/ephtracy/voxel-model/issues/22

raylib/examples/models/resources/shaders/glsl100/cubemap.fs

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+#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);
+}

raylib/examples/models/resources/shaders/glsl100/cubemap.vs

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+#version 100
+
+// Input vertex attributes
+attribute vec3 vertexPosition;
+
+// Input uniform values
+uniform mat4 matProjection;
+uniform mat4 matView;
+
+// 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 = matProjection*matView*vec4(vertexPosition, 1.0);
+}

raylib/examples/models/resources/shaders/glsl100/skinning.fs

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+#version 100
+
+precision mediump float;
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+void main()
+{
+    // Fetch color from texture sampler
+    vec4 texelColor = texture2D(texture0, fragTexCoord);
+    
+    // Calculate final fragment color
+    gl_FragColor = texelColor*colDiffuse*fragColor;
+}

raylib/examples/models/resources/shaders/glsl100/skinning.vs

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+#version 100
+
+#define MAX_BONE_NUM 64
+
+// Input vertex attributes
+attribute vec3 vertexPosition;
+attribute vec2 vertexTexCoord;
+attribute vec4 vertexColor;
+attribute vec4 vertexBoneIds;
+attribute vec4 vertexBoneWeights;
+
+// Input uniform values
+uniform mat4 mvp;
+uniform mat4 boneMatrices[MAX_BONE_NUM];
+
+// Output vertex attributes (to fragment shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+void main()
+{
+    int boneIndex0 = int(vertexBoneIds.x);
+    int boneIndex1 = int(vertexBoneIds.y);
+    int boneIndex2 = int(vertexBoneIds.z);
+    int boneIndex3 = int(vertexBoneIds.w);
+    
+    // WARNING: OpenGL ES 2.0 does not support automatic matrix transposing, neither transpose() function
+    mat4 boneMatrixTransposed0 = mat4(
+        vec4(boneMatrices[boneIndex0][0].x, boneMatrices[boneIndex0][1].x, boneMatrices[boneIndex0][2].x, boneMatrices[boneIndex0][3].x),
+        vec4(boneMatrices[boneIndex0][0].y, boneMatrices[boneIndex0][1].y, boneMatrices[boneIndex0][2].y, boneMatrices[boneIndex0][3].y),
+        vec4(boneMatrices[boneIndex0][0].z, boneMatrices[boneIndex0][1].z, boneMatrices[boneIndex0][2].z, boneMatrices[boneIndex0][3].z),
+        vec4(boneMatrices[boneIndex0][0].w, boneMatrices[boneIndex0][1].w, boneMatrices[boneIndex0][2].w, boneMatrices[boneIndex0][3].w));
+    mat4 boneMatrixTransposed1 = mat4(
+        vec4(boneMatrices[boneIndex1][0].x, boneMatrices[boneIndex1][1].x, boneMatrices[boneIndex1][2].x, boneMatrices[boneIndex1][3].x),
+        vec4(boneMatrices[boneIndex1][0].y, boneMatrices[boneIndex1][1].y, boneMatrices[boneIndex1][2].y, boneMatrices[boneIndex1][3].y),
+        vec4(boneMatrices[boneIndex1][0].z, boneMatrices[boneIndex1][1].z, boneMatrices[boneIndex1][2].z, boneMatrices[boneIndex1][3].z),
+        vec4(boneMatrices[boneIndex1][0].w, boneMatrices[boneIndex1][1].w, boneMatrices[boneIndex1][2].w, boneMatrices[boneIndex1][3].w));
+    mat4 boneMatrixTransposed2 = mat4(
+        vec4(boneMatrices[boneIndex2][0].x, boneMatrices[boneIndex2][1].x, boneMatrices[boneIndex2][2].x, boneMatrices[boneIndex2][3].x),
+        vec4(boneMatrices[boneIndex2][0].y, boneMatrices[boneIndex2][1].y, boneMatrices[boneIndex2][2].y, boneMatrices[boneIndex2][3].y),
+        vec4(boneMatrices[boneIndex2][0].z, boneMatrices[boneIndex2][1].z, boneMatrices[boneIndex2][2].z, boneMatrices[boneIndex2][3].z),
+        vec4(boneMatrices[boneIndex2][0].w, boneMatrices[boneIndex2][1].w, boneMatrices[boneIndex2][2].w, boneMatrices[boneIndex2][3].w));
+    mat4 boneMatrixTransposed3 = mat4(
+        vec4(boneMatrices[boneIndex3][0].x, boneMatrices[boneIndex3][1].x, boneMatrices[boneIndex3][2].x, boneMatrices[boneIndex3][3].x),
+        vec4(boneMatrices[boneIndex3][0].y, boneMatrices[boneIndex3][1].y, boneMatrices[boneIndex3][2].y, boneMatrices[boneIndex3][3].y),
+        vec4(boneMatrices[boneIndex3][0].z, boneMatrices[boneIndex3][1].z, boneMatrices[boneIndex3][2].z, boneMatrices[boneIndex3][3].z),
+        vec4(boneMatrices[boneIndex3][0].w, boneMatrices[boneIndex3][1].w, boneMatrices[boneIndex3][2].w, boneMatrices[boneIndex3][3].w));
+    
+    vec4 skinnedPosition =
+        vertexBoneWeights.x*(boneMatrixTransposed0*vec4(vertexPosition, 1.0)) +
+        vertexBoneWeights.y*(boneMatrixTransposed1*vec4(vertexPosition, 1.0)) + 
+        vertexBoneWeights.z*(boneMatrixTransposed2*vec4(vertexPosition, 1.0)) + 
+        vertexBoneWeights.w*(boneMatrixTransposed3*vec4(vertexPosition, 1.0));
+    
+    fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+
+    gl_Position = mvp*skinnedPosition;
+}

raylib/examples/models/resources/shaders/glsl100/skybox.fs

@@ -0,0 +1,31 @@
+#version 100
+
+precision mediump float;
+
+// Input vertex attributes (from vertex shader)
+varying vec3 fragPosition;
+
+// Input uniform values
+uniform samplerCube environmentMap;
+uniform bool vflipped;
+uniform bool doGamma;
+
+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);
+
+    if (doGamma) // 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);
+}

raylib/examples/models/resources/shaders/glsl100/skybox.vs

@@ -0,0 +1,24 @@
+#version 100
+
+// Input vertex attributes
+attribute vec3 vertexPosition;
+
+// Input uniform values
+uniform mat4 matProjection;
+uniform mat4 matView;
+
+// 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(matView));
+    vec4 clipPos = matProjection*rotView*vec4(vertexPosition, 1.0);
+
+    // Calculate final vertex position
+    gl_Position = clipPos;
+}

raylib/examples/models/resources/shaders/glsl330/cubemap.fs

@@ -0,0 +1,30 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec3 fragPosition;
+
+// Input uniform values
+uniform sampler2D equirectangularMap;
+
+// Output fragment color
+out vec4 finalColor;
+
+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 = texture(equirectangularMap, uv).rgb;
+
+    // Calculate final fragment color
+    finalColor = vec4(color, 1.0);
+}

raylib/examples/models/resources/shaders/glsl330/cubemap.vs

@@ -0,0 +1,20 @@
+#version 330
+
+// Input vertex attributes
+in vec3 vertexPosition;
+
+// Input uniform values
+uniform mat4 matProjection;
+uniform mat4 matView;
+
+// Output vertex attributes (to fragment shader)
+out vec3 fragPosition;
+
+void main()
+{
+    // Calculate fragment position based on model transformations
+    fragPosition = vertexPosition;
+
+    // Calculate final vertex position
+    gl_Position = matProjection*matView*vec4(vertexPosition, 1.0);
+}

raylib/examples/models/resources/shaders/glsl330/skinning.fs

@@ -0,0 +1,17 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Output fragment color
+out vec4 finalColor;
+
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+void main()
+{
+    vec4 texelColor = texture(texture0, fragTexCoord);
+    finalColor = texelColor*colDiffuse*fragColor;
+}

raylib/examples/models/resources/shaders/glsl330/skinning.vs

@@ -0,0 +1,37 @@
+#version 330
+
+#define MAX_BONE_NUM 128
+
+// Input vertex attributes
+in vec3 vertexPosition;
+in vec2 vertexTexCoord;
+in vec4 vertexColor;
+in vec4 vertexBoneIds;
+in vec4 vertexBoneWeights;
+
+// Input uniform values
+uniform mat4 mvp;
+uniform mat4 boneMatrices[MAX_BONE_NUM];
+
+// Output vertex attributes (to fragment shader)
+out vec2 fragTexCoord;
+out vec4 fragColor;
+
+void main()
+{
+    int boneIndex0 = int(vertexBoneIds.x);
+    int boneIndex1 = int(vertexBoneIds.y);
+    int boneIndex2 = int(vertexBoneIds.z);
+    int boneIndex3 = int(vertexBoneIds.w);
+    
+    vec4 skinnedPosition =
+        vertexBoneWeights.x*(boneMatrices[boneIndex0]*vec4(vertexPosition, 1.0)) +
+        vertexBoneWeights.y*(boneMatrices[boneIndex1]*vec4(vertexPosition, 1.0)) + 
+        vertexBoneWeights.z*(boneMatrices[boneIndex2]*vec4(vertexPosition, 1.0)) + 
+        vertexBoneWeights.w*(boneMatrices[boneIndex3]*vec4(vertexPosition, 1.0));
+    
+    fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+
+    gl_Position = mvp*skinnedPosition;
+}

raylib/examples/models/resources/shaders/glsl330/skybox.fs

@@ -0,0 +1,30 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec3 fragPosition;
+
+// Input uniform values
+uniform samplerCube environmentMap;
+uniform bool vflipped;
+uniform bool doGamma;
+
+// Output fragment color
+out vec4 finalColor;
+
+void main()
+{
+    // Fetch color from texture map
+    vec3 color = vec3(0.0);
+
+    if (vflipped) color = texture(environmentMap, vec3(fragPosition.x, -fragPosition.y, fragPosition.z)).rgb;
+    else color = texture(environmentMap, fragPosition).rgb;
+
+    if (doGamma)// Apply gamma correction
+    {
+        color = color/(color + vec3(1.0));
+        color = pow(color, vec3(1.0/2.2));
+    }
+
+    // Calculate final fragment color
+    finalColor = vec4(color, 1.0);
+}

raylib/examples/models/resources/shaders/glsl330/skybox.vs

@@ -0,0 +1,24 @@
+#version 330
+
+// Input vertex attributes
+in vec3 vertexPosition;
+
+// Input uniform values
+uniform mat4 matProjection;
+uniform mat4 matView;
+
+// Output vertex attributes (to fragment shader)
+out vec3 fragPosition;
+
+void main()
+{
+    // Calculate fragment position based on model transformations
+    fragPosition = vertexPosition;
+
+    // Remove translation from the view matrix
+    mat4 rotView = mat4(mat3(matView));
+    vec4 clipPos = matProjection*rotView*vec4(vertexPosition, 1.0);
+
+    // Calculate final vertex position
+    gl_Position = clipPos;
+}

raylib/examples/models/resources/shaders/glsl330/voxel_lighting.fs

@@ -0,0 +1,76 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec3 fragPosition;
+//in vec2 fragTexCoord;
+in vec4 fragColor;
+in vec3 fragNormal;
+
+// Input uniform values
+//uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+#define     MAX_LIGHTS              4
+#define     LIGHT_DIRECTIONAL       0
+#define     LIGHT_POINT             1
+
+struct Light {
+    int enabled;
+    int type;
+    vec3 position;
+    vec3 target;
+    vec4 color;
+};
+
+// Input lighting values
+uniform Light lights[MAX_LIGHTS];
+uniform vec4 ambient;
+uniform vec3 viewPos;
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    //vec4 texelColor = texture(texture0, fragTexCoord);
+    vec3 lightDot = vec3(0.0);
+    vec3 normal = normalize(fragNormal);
+    vec3 viewD = normalize(viewPos - fragPosition);
+    vec3 specular = vec3(0.0);
+
+    // NOTE: Implement here your fragment shader code
+
+    for (int i = 0; i < MAX_LIGHTS; i++)
+    {
+        if (lights[i].enabled == 1)
+        {
+            vec3 light = vec3(0.0);
+
+            if (lights[i].type == LIGHT_DIRECTIONAL)
+            {
+                light = -normalize(lights[i].target - lights[i].position);
+            }
+
+            if (lights[i].type == LIGHT_POINT)
+            {
+                light = normalize(lights[i].position - fragPosition);
+            }
+
+            float NdotL = max(dot(normal, light), 0.0);
+            lightDot += lights[i].color.rgb*NdotL;
+
+            float specCo = 0.0;
+            if (NdotL > 0.0) specCo = pow(max(0.0, dot(viewD, reflect(-(light), normal))), 16.0); // 16 refers to shine
+            specular += specCo;
+        }
+    }
+
+    finalColor = (fragColor*((colDiffuse + vec4(specular, 1.0))*vec4(lightDot, 1.0)));
+    finalColor += fragColor*(ambient/10.0)*colDiffuse;
+
+    // Gamma correction
+    finalColor = pow(finalColor, vec4(1.0/2.2));
+}

raylib/examples/models/resources/shaders/glsl330/voxel_lighting.vs

@@ -0,0 +1,32 @@
+#version 330
+
+// Input vertex attributes
+in vec3 vertexPosition;
+//in vec2 vertexTexCoord;
+in vec3 vertexNormal;
+in vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvp;
+uniform mat4 matModel;
+uniform mat4 matNormal;
+
+// Output vertex attributes (to fragment shader)
+out vec3 fragPosition;
+//out vec2 fragTexCoord;
+out vec4 fragColor;
+out vec3 fragNormal;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    // Send vertex attributes to fragment shader
+    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0));
+    //fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+    fragNormal = normalize(vec3(matNormal*vec4(vertexNormal, 1.0)));
+
+    // Calculate final vertex position
+    gl_Position = mvp*vec4(vertexPosition, 1.0);
+}