Changing examples to use makefile

- Testing a modified version of the makefile from raylib Instead of multiple project files for examples.
- Fixed readme example

Examples/shaders/resources/shaders/glsl100/base.fs

@@ -0,0 +1,24 @@
+#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;
+
+// NOTE: Add here your custom variables
+uniform vec2 resolution = vec2(800, 450);
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec4 texelColor = texture2D(texture0, fragTexCoord);
+    
+    // NOTE: Implement here your fragment shader code
+    
+    gl_FragColor = texelColor*colDiffuse;
+}

Examples/shaders/resources/shaders/glsl100/base.vs

@@ -0,0 +1,26 @@
+#version 100
+
+// Input vertex attributes
+attribute vec3 vertexPosition;
+attribute vec2 vertexTexCoord;
+attribute vec3 vertexNormal;
+attribute vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvp;
+
+// Output vertex attributes (to fragment shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// NOTE: Add here your custom variables 
+
+void main()
+{
+    // Send vertex attributes to fragment shader
+    fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+    
+    // Calculate final vertex position
+    gl_Position = mvp*vec4(vertexPosition, 1.0);
+}

Examples/shaders/resources/shaders/glsl100/bloom.fs

@@ -0,0 +1,39 @@
+#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;
+
+// NOTE: Add here your custom variables
+
+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
+
+void main()
+{
+    vec4 sum = vec4(0);
+    vec2 sizeFactor = vec2(1)/size*quality;
+
+    // Texel color fetching from texture sampler
+    vec4 source = texture2D(texture0, fragTexCoord);
+
+    const int range = 2;            // should be = (samples - 1)/2;
+
+    for (int x = -range; x <= range; x++)
+    {
+        for (int y = -range; y <= range; y++)
+        {
+            sum += texture2D(texture0, fragTexCoord + vec2(x, y)*sizeFactor);
+        }
+    }
+
+    // Calculate final fragment color
+    gl_FragColor = ((sum/(samples*samples)) + source)*colDiffuse;
+}

Examples/shaders/resources/shaders/glsl100/blur.fs

@@ -0,0 +1,34 @@
+#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;
+
+// NOTE: Add here your custom variables
+
+// NOTE: Render size values must be passed from code
+const float renderWidth = 800.0;
+const float renderHeight = 450.0;
+
+vec3 offset = vec3(0.0, 1.3846153846, 3.2307692308);
+vec3 weight = vec3(0.2270270270, 0.3162162162, 0.0702702703);
+
+void main() 
+{ 
+    // Texel color fetching from texture sampler
+    vec3 tc = texture2D(texture0, fragTexCoord).rgb*weight.x;
+    
+    tc += texture2D(texture0, fragTexCoord + vec2(offset.y)/renderWidth, 0.0).rgb*weight.y;
+    tc += texture2D(texture0, fragTexCoord - vec2(offset.y)/renderWidth, 0.0).rgb*weight.y;
+    
+    tc += texture2D(texture0, fragTexCoord + vec2(offset.z)/renderWidth, 0.0).rgb*weight.z;
+    tc += texture2D(texture0, fragTexCoord - vec2(offset.z)/renderWidth, 0.0).rgb*weight.z;
+
+    gl_FragColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl100/cross_hatching.fs

@@ -0,0 +1,47 @@
+# 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;
+
+// NOTE: Add here your custom variables
+
+float hatchOffsetY = 5.0;
+float lumThreshold01 = 0.9;
+float lumThreshold02 = 0.7;
+float lumThreshold03 = 0.5;
+float lumThreshold04 = 0.3;
+
+void main() 
+{
+    vec3 tc = vec3(1.0, 1.0, 1.0);
+    float lum = length(texture2D(texture0, fragTexCoord).rgb);
+
+    if (lum < lumThreshold01) 
+    {
+        if (mod(gl_FragCoord.x + gl_FragCoord.y, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
+    }  
+
+    if (lum < lumThreshold02) 
+    {
+        if (mod(gl_FragCoord .x - gl_FragCoord .y, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
+    }  
+
+    if (lum < lumThreshold03) 
+    {
+        if (mod(gl_FragCoord .x + gl_FragCoord .y - hatchOffsetY, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
+    }  
+
+    if (lum < lumThreshold04) 
+    {
+        if (mod(gl_FragCoord .x - gl_FragCoord .y - hatchOffsetY, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
+    }
+
+    gl_FragColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl100/cross_stitching.fs

@@ -0,0 +1,57 @@
+# 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;
+
+// NOTE: Add here your custom variables
+
+// NOTE: Render size values must be passed from code
+const float renderWidth = 800.0;
+const float renderHeight = 450.0;
+
+float stitchingSize = 6.0;
+int invert = 0;
+
+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));
+    tlPos *= size;
+
+    int remX = int(mod(cPos.x, size));
+    int remY = int(mod(cPos.y, size));
+    
+    if (remX == 0 && remY == 0) tlPos = cPos;
+    
+    vec2 blPos = tlPos;
+    blPos.y += (size - 1.0);
+    
+    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
+    {
+        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);
+    }
+    
+    return c;
+}
+
+void main()
+{
+    vec3 tc = PostFX(texture0, fragTexCoord).rgb;
+
+    gl_FragColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl100/distortion.fs

@@ -0,0 +1,54 @@
+#version 100
+
+precision mediump float;
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+
+// Input uniform values
+uniform sampler2D texture0;
+
+// NOTE: Default parameters for Oculus Rift DK2 device
+const vec2 LeftLensCenter = vec2(0.2863248, 0.5);
+const vec2 RightLensCenter = vec2(0.7136753, 0.5);
+const vec2 LeftScreenCenter = vec2(0.25, 0.5);
+const vec2 RightScreenCenter = vec2(0.75, 0.5);
+const vec2 Scale = vec2(0.25, 0.45);
+const vec2 ScaleIn = vec2(4.0, 2.5);
+const vec4 HmdWarpParam = vec4(1.0, 0.22, 0.24, 0.0);
+const vec4 ChromaAbParam = vec4(0.996, -0.004, 1.014, 0.0);
+
+void main()
+{
+    // The following two variables need to be set per eye
+    vec2 LensCenter = fragTexCoord.x < 0.5 ? LeftLensCenter : RightLensCenter;
+    vec2 ScreenCenter = fragTexCoord.x < 0.5 ? LeftScreenCenter : RightScreenCenter;
+    
+    // Scales input texture coordinates for distortion: vec2 HmdWarp(vec2 fragTexCoord, vec2 LensCenter)
+    vec2 theta = (fragTexCoord - LensCenter)*ScaleIn;   // Scales to [-1, 1]
+    float rSq = theta.x*theta.x + theta.y*theta.y;
+    vec2 theta1 = theta*(HmdWarpParam.x + HmdWarpParam.y*rSq + HmdWarpParam.z*rSq*rSq + HmdWarpParam.w*rSq*rSq*rSq);
+    //vec2 tc = LensCenter + Scale*theta1;
+    
+    // Detect whether blue texture coordinates are out of range since these will scaled out the furthest
+    vec2 thetaBlue = theta1*(ChromaAbParam.z + ChromaAbParam.w*rSq);
+    vec2 tcBlue = LensCenter + Scale*thetaBlue;
+
+    if (any(bvec2(clamp(tcBlue, ScreenCenter - vec2(0.25, 0.5), ScreenCenter + vec2(0.25, 0.5)) - tcBlue))) gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);
+    else
+    {
+        // Do blue texture lookup
+        float blue = texture2D(texture0, tcBlue).b;
+
+        // Do green lookup (no scaling)
+        vec2 tcGreen = LensCenter + Scale*theta1;
+        float green = texture2D(texture0, tcGreen).g;
+
+        // Do red scale and lookup
+        vec2 thetaRed = theta1*(ChromaAbParam.x + ChromaAbParam.y*rSq);
+        vec2 tcRed = LensCenter + Scale*thetaRed;
+        float red = texture2D(texture0, tcRed).r;
+
+        gl_FragColor = vec4(red, green, blue, 1.0);
+    }
+}

Examples/shaders/resources/shaders/glsl100/dream_vision.fs

@@ -0,0 +1,37 @@
+#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;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    vec4 color = texture2D(texture0, fragTexCoord);
+
+    color += texture2D(texture0, fragTexCoord + 0.001);
+    color += texture2D(texture0, fragTexCoord + 0.003);
+    color += texture2D(texture0, fragTexCoord + 0.005);
+    color += texture2D(texture0, fragTexCoord + 0.007);
+    color += texture2D(texture0, fragTexCoord + 0.009);
+    color += texture2D(texture0, fragTexCoord + 0.011);
+
+    color += texture2D(texture0, fragTexCoord - 0.001);
+    color += texture2D(texture0, fragTexCoord - 0.003);
+    color += texture2D(texture0, fragTexCoord - 0.005);
+    color += texture2D(texture0, fragTexCoord - 0.007);
+    color += texture2D(texture0, fragTexCoord - 0.009);
+    color += texture2D(texture0, fragTexCoord - 0.011);
+
+    color.rgb = vec3((color.r + color.g + color.b)/3.0);
+    color = color/9.5;
+
+    gl_FragColor = color;
+}			

Examples/shaders/resources/shaders/glsl100/fisheye.fs

@@ -0,0 +1,43 @@
+#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;
+
+// NOTE: Add here your custom variables
+
+const float PI = 3.1415926535;
+
+void main()
+{
+    float aperture = 178.0;
+    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;
+    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;
+        float phi = atan(xy.y, xy.x);
+
+        uv.x = r * cos(phi) + 0.5;
+        uv.y = r * sin(phi) + 0.5;
+    }
+    else
+    {
+        uv = fragTexCoord.xy;
+    }
+
+    gl_FragColor = texture2D(texture0, uv);
+}

Examples/shaders/resources/shaders/glsl100/grayscale.fs

@@ -0,0 +1,25 @@
+#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;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec4 texelColor = texture2D(texture0, fragTexCoord)*colDiffuse*fragColor;
+    
+    // Convert texel color to grayscale using NTSC conversion weights
+    float gray = dot(texelColor.rgb, vec3(0.299, 0.587, 0.114));
+    
+    // Calculate final fragment color
+    gl_FragColor = vec4(gray, gray, gray, texelColor.a);
+}

Examples/shaders/resources/shaders/glsl100/pixelizer.fs

@@ -0,0 +1,32 @@
+#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;
+
+// NOTE: Add here your custom variables 
+
+// NOTE: Render size values must be passed from code
+const float renderWidth = 800.0;
+const float renderHeight = 450.0;
+
+float pixelWidth = 5.0;
+float pixelHeight = 5.0;
+
+void main() 
+{ 
+    float dx = pixelWidth*(1.0/renderWidth);
+    float dy = pixelHeight*(1.0/renderHeight);
+    
+    vec2 coord = vec2(dx*floor(fragTexCoord.x/dx), dy*floor(fragTexCoord.y/dy));
+    
+    vec3 tc = texture2D(texture0, coord).rgb;
+
+    gl_FragColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl100/posterization.fs

@@ -0,0 +1,29 @@
+#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;
+
+// NOTE: Add here your custom variables
+
+float gamma = 0.6;
+float numColors = 8.0;
+
+void main() 
+{ 
+    vec3 color = texture2D(texture0, fragTexCoord.xy).rgb;
+    
+    color = pow(color, vec3(gamma, gamma, gamma));
+    color = color*numColors;
+    color = floor(color);
+    color = color/numColors;
+    color = pow(color, vec3(1.0/gamma));
+    
+    gl_FragColor = vec4(color, 1.0);
+}

Examples/shaders/resources/shaders/glsl100/predator.fs

@@ -0,0 +1,31 @@
+#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;
+
+// NOTE: Add here your custom variables
+
+void main() 
+{
+    vec3 color = texture2D(texture0, fragTexCoord).rgb;
+    vec3 colors[3];
+    colors[0] = vec3(0.0, 0.0, 1.0);
+    colors[1] = vec3(1.0, 1.0, 0.0);
+    colors[2] = vec3(1.0, 0.0, 0.0);
+    
+    float lum = (color.r + color.g + color.b)/3.0;
+
+    vec3 tc = vec3(0.0, 0.0, 0.0);
+    
+    if (lum < 0.5) tc = mix(colors[0], colors[1], lum/0.5);
+    else tc = mix(colors[1], colors[2], (lum - 0.5)/0.5);
+
+    gl_FragColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl100/scanlines.fs

@@ -0,0 +1,44 @@
+#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;
+
+// NOTE: Add here your custom variables
+
+float offset = 0.0;
+float frequency = 450.0/3.0;
+
+uniform float time;
+
+void main()
+{
+/*
+    // Scanlines method 1
+    float tval = 0; //time
+    vec2 uv = 0.5 + (fragTexCoord - 0.5)*(0.9 + 0.01*sin(0.5*tval));
+
+    vec4 color = texture2D(texture0, fragTexCoord);
+
+    color = clamp(color*0.5 + 0.5*color*color*1.2, 0.0, 1.0);
+    color *= 0.5 + 0.5*16.0*uv.x*uv.y*(1.0 - uv.x)*(1.0 - uv.y);
+    color *= vec4(0.8, 1.0, 0.7, 1);
+    color *= 0.9 + 0.1*sin(10.0*tval + uv.y*1000.0);
+    color *= 0.97 + 0.03*sin(110.0*tval);
+
+    fragColor = color;
+*/
+    // Scanlines method 2
+    float globalPos = (fragTexCoord.y + offset) * frequency;
+    float wavePos = cos((fract(globalPos) - 0.5)*3.14);
+    
+    vec4 color = texture2D(texture0, fragTexCoord);
+
+    gl_FragColor = mix(vec4(0.0, 0.3, 0.0, 0.0), color, wavePos);
+}

Examples/shaders/resources/shaders/glsl100/sobel.fs

@@ -0,0 +1,40 @@
+#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;
+
+// NOTE: Add here your custom variables
+vec2 resolution = vec2(800.0, 450.0);
+
+void main() 
+{
+	float x = 1.0/resolution.x;
+	float y = 1.0/resolution.y;
+    
+	vec4 horizEdge = vec4(0.0);
+	horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y - y))*1.0;
+	horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y    ))*2.0;
+	horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y + y))*1.0;
+	horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y - y))*1.0;
+	horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y    ))*2.0;
+	horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y + y))*1.0;
+    
+	vec4 vertEdge = vec4(0.0);
+	vertEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y - y))*1.0;
+	vertEdge -= texture2D(texture0, vec2(fragTexCoord.x    , fragTexCoord.y - y))*2.0;
+	vertEdge -= texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y - y))*1.0;
+	vertEdge += texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y + y))*1.0;
+	vertEdge += texture2D(texture0, vec2(fragTexCoord.x    , fragTexCoord.y + y))*2.0;
+	vertEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y + y))*1.0;
+    
+	vec3 edge = sqrt((horizEdge.rgb*horizEdge.rgb) + (vertEdge.rgb*vertEdge.rgb));
+	
+	gl_FragColor = vec4(edge, texture2D(texture0, fragTexCoord).a);
+}

Examples/shaders/resources/shaders/glsl100/swirl.fs

@@ -0,0 +1,46 @@
+#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;
+
+// NOTE: Add here your custom variables
+
+// NOTE: Render size values should be passed from code
+const float renderWidth = 800;
+const float renderHeight = 450;
+
+float radius = 250.0;
+float angle = 0.8;
+
+uniform vec2 center;
+
+void main()
+{
+    vec2 texSize = vec2(renderWidth, renderHeight);
+    vec2 tc = fragTexCoord*texSize;
+    tc -= center;
+    
+    float dist = length(tc);
+
+    if (dist < radius) 
+    {
+        float percent = (radius - dist)/radius;
+        float theta = percent*percent*angle*8.0;
+        float s = sin(theta);
+        float c = cos(theta);
+        
+        tc = vec2(dot(tc, vec2(c, -s)), dot(tc, vec2(s, c)));
+    }
+
+    tc += center;
+    vec4 color = texture2D(texture0, tc/texSize)*colDiffuse*fragColor;;
+
+    gl_FragColor = vec4(color.rgb, 1.0);;
+}

Examples/shaders/resources/shaders/glsl120/base.fs

@@ -0,0 +1,22 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+uniform vec2 resolution = vec2(800, 450);
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec4 texelColor = texture2D(texture0, fragTexCoord);
+    
+    // NOTE: Implement here your fragment shader code
+    
+    gl_FragColor = texelColor*colDiffuse;
+}

Examples/shaders/resources/shaders/glsl120/base.vs

@@ -0,0 +1,26 @@
+#version 120
+
+// Input vertex attributes
+attribute vec3 vertexPosition;
+attribute vec2 vertexTexCoord;
+attribute vec3 vertexNormal;
+attribute vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvp;
+
+// Output vertex attributes (to fragment shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// NOTE: Add here your custom variables 
+
+void main()
+{
+    // Send vertex attributes to fragment shader
+    fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+    
+    // Calculate final vertex position
+    gl_Position = mvp*vec4(vertexPosition, 1.0);
+}

Examples/shaders/resources/shaders/glsl120/bloom.fs

@@ -0,0 +1,37 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+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
+
+void main()
+{
+    vec4 sum = vec4(0);
+    vec2 sizeFactor = vec2(1)/size*quality;
+
+    // Texel color fetching from texture sampler
+    vec4 source = texture2D(texture0, fragTexCoord);
+
+    const int range = 2;            // should be = (samples - 1)/2;
+
+    for (int x = -range; x <= range; x++)
+    {
+        for (int y = -range; y <= range; y++)
+        {
+            sum += texture2D(texture0, fragTexCoord + vec2(x, y)*sizeFactor);
+        }
+    }
+
+    // Calculate final fragment color
+    gl_FragColor = ((sum/(samples*samples)) + source)*colDiffuse;
+}

Examples/shaders/resources/shaders/glsl120/blur.fs

@@ -0,0 +1,32 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+// NOTE: Render size values must be passed from code
+const float renderWidth = 800.0;
+const float renderHeight = 450.0;
+
+vec3 offset = vec3(0.0, 1.3846153846, 3.2307692308);
+vec3 weight = vec3(0.2270270270, 0.3162162162, 0.0702702703);
+
+void main() 
+{ 
+    // Texel color fetching from texture sampler
+    vec3 tc = texture2D(texture0, fragTexCoord).rgb*weight.x;
+    
+    tc += texture2D(texture0, fragTexCoord + vec2(offset.y)/renderWidth, 0.0).rgb*weight.y;
+    tc += texture2D(texture0, fragTexCoord - vec2(offset.y)/renderWidth, 0.0).rgb*weight.y;
+    
+    tc += texture2D(texture0, fragTexCoord + vec2(offset.z)/renderWidth, 0.0).rgb*weight.z;
+    tc += texture2D(texture0, fragTexCoord - vec2(offset.z)/renderWidth, 0.0).rgb*weight.z;
+
+    gl_FragColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl120/cross_hatching.fs

@@ -0,0 +1,45 @@
+# version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+float hatchOffsetY = 5.0;
+float lumThreshold01 = 0.9;
+float lumThreshold02 = 0.7;
+float lumThreshold03 = 0.5;
+float lumThreshold04 = 0.3;
+
+void main() 
+{
+    vec3 tc = vec3(1.0, 1.0, 1.0);
+    float lum = length(texture2D(texture0, fragTexCoord).rgb);
+
+    if (lum < lumThreshold01) 
+    {
+        if (mod(gl_FragCoord.x + gl_FragCoord.y, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
+    }  
+
+    if (lum < lumThreshold02) 
+    {
+        if (mod(gl_FragCoord .x - gl_FragCoord .y, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
+    }  
+
+    if (lum < lumThreshold03) 
+    {
+        if (mod(gl_FragCoord .x + gl_FragCoord .y - hatchOffsetY, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
+    }  
+
+    if (lum < lumThreshold04) 
+    {
+        if (mod(gl_FragCoord .x - gl_FragCoord .y - hatchOffsetY, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
+    }
+
+    gl_FragColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl120/cross_stitching.fs

@@ -0,0 +1,55 @@
+# version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+// NOTE: Render size values must be passed from code
+const float renderWidth = 800.0;
+const float renderHeight = 450.0;
+
+float stitchingSize = 6.0;
+int invert = 0;
+
+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));
+    tlPos *= size;
+
+    int remX = int(mod(cPos.x, size));
+    int remY = int(mod(cPos.y, size));
+    
+    if (remX == 0 && remY == 0) tlPos = cPos;
+    
+    vec2 blPos = tlPos;
+    blPos.y += (size - 1.0);
+    
+    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
+    {
+        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);
+    }
+    
+    return c;
+}
+
+void main()
+{
+    vec3 tc = PostFX(texture0, fragTexCoord).rgb;
+
+    gl_FragColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl120/distortion.fs

@@ -0,0 +1,52 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+
+// Input uniform values
+uniform sampler2D texture0;
+
+// NOTE: Default parameters for Oculus Rift DK2 device
+const vec2 LeftLensCenter = vec2(0.2863248, 0.5);
+const vec2 RightLensCenter = vec2(0.7136753, 0.5);
+const vec2 LeftScreenCenter = vec2(0.25, 0.5);
+const vec2 RightScreenCenter = vec2(0.75, 0.5);
+const vec2 Scale = vec2(0.25, 0.45);
+const vec2 ScaleIn = vec2(4.0, 2.5);
+const vec4 HmdWarpParam = vec4(1.0, 0.22, 0.24, 0.0);
+const vec4 ChromaAbParam = vec4(0.996, -0.004, 1.014, 0.0);
+
+void main()
+{
+    // The following two variables need to be set per eye
+    vec2 LensCenter = fragTexCoord.x < 0.5 ? LeftLensCenter : RightLensCenter;
+    vec2 ScreenCenter = fragTexCoord.x < 0.5 ? LeftScreenCenter : RightScreenCenter;
+    
+    // Scales input texture coordinates for distortion: vec2 HmdWarp(vec2 fragTexCoord, vec2 LensCenter)
+    vec2 theta = (fragTexCoord - LensCenter)*ScaleIn;   // Scales to [-1, 1]
+    float rSq = theta.x*theta.x + theta.y*theta.y;
+    vec2 theta1 = theta*(HmdWarpParam.x + HmdWarpParam.y*rSq + HmdWarpParam.z*rSq*rSq + HmdWarpParam.w*rSq*rSq*rSq);
+    //vec2 tc = LensCenter + Scale*theta1;
+    
+    // Detect whether blue texture coordinates are out of range since these will scaled out the furthest
+    vec2 thetaBlue = theta1*(ChromaAbParam.z + ChromaAbParam.w*rSq);
+    vec2 tcBlue = LensCenter + Scale*thetaBlue;
+
+    if (any(bvec2(clamp(tcBlue, ScreenCenter - vec2(0.25, 0.5), ScreenCenter + vec2(0.25, 0.5)) - tcBlue))) gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);
+    else
+    {
+        // Do blue texture lookup
+        float blue = texture2D(texture0, tcBlue).b;
+
+        // Do green lookup (no scaling)
+        vec2 tcGreen = LensCenter + Scale*theta1;
+        float green = texture2D(texture0, tcGreen).g;
+
+        // Do red scale and lookup
+        vec2 thetaRed = theta1*(ChromaAbParam.x + ChromaAbParam.y*rSq);
+        vec2 tcRed = LensCenter + Scale*thetaRed;
+        float red = texture2D(texture0, tcRed).r;
+
+        gl_FragColor = vec4(red, green, blue, 1.0);
+    }
+}

Examples/shaders/resources/shaders/glsl120/dream_vision.fs

@@ -0,0 +1,35 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    vec4 color = texture2D(texture0, fragTexCoord);
+
+    color += texture2D(texture0, fragTexCoord + 0.001);
+    color += texture2D(texture0, fragTexCoord + 0.003);
+    color += texture2D(texture0, fragTexCoord + 0.005);
+    color += texture2D(texture0, fragTexCoord + 0.007);
+    color += texture2D(texture0, fragTexCoord + 0.009);
+    color += texture2D(texture0, fragTexCoord + 0.011);
+
+    color += texture2D(texture0, fragTexCoord - 0.001);
+    color += texture2D(texture0, fragTexCoord - 0.003);
+    color += texture2D(texture0, fragTexCoord - 0.005);
+    color += texture2D(texture0, fragTexCoord - 0.007);
+    color += texture2D(texture0, fragTexCoord - 0.009);
+    color += texture2D(texture0, fragTexCoord - 0.011);
+
+    color.rgb = vec3((color.r + color.g + color.b)/3.0);
+    color = color/9.5;
+
+    gl_FragColor = color;
+}			

Examples/shaders/resources/shaders/glsl120/fisheye.fs

@@ -0,0 +1,41 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+const float PI = 3.1415926535;
+
+void main()
+{
+    float aperture = 178.0;
+    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;
+    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;
+        float phi = atan(xy.y, xy.x);
+
+        uv.x = r * cos(phi) + 0.5;
+        uv.y = r * sin(phi) + 0.5;
+    }
+    else
+    {
+        uv = fragTexCoord.xy;
+    }
+
+    gl_FragColor = texture2D(texture0, uv);
+}

Examples/shaders/resources/shaders/glsl120/grayscale.fs

@@ -0,0 +1,23 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec4 texelColor = texture2D(texture0, fragTexCoord)*colDiffuse*fragColor;
+    
+    // Convert texel color to grayscale using NTSC conversion weights
+    float gray = dot(texelColor.rgb, vec3(0.299, 0.587, 0.114));
+    
+    // Calculate final fragment color
+    gl_FragColor = vec4(gray, gray, gray, texelColor.a);
+}

Examples/shaders/resources/shaders/glsl120/pixelizer.fs

@@ -0,0 +1,30 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables 
+
+// NOTE: Render size values must be passed from code
+const float renderWidth = 800.0;
+const float renderHeight = 450.0;
+
+float pixelWidth = 5.0;
+float pixelHeight = 5.0;
+
+void main() 
+{ 
+    float dx = pixelWidth*(1.0/renderWidth);
+    float dy = pixelHeight*(1.0/renderHeight);
+    
+    vec2 coord = vec2(dx*floor(fragTexCoord.x/dx), dy*floor(fragTexCoord.y/dy));
+    
+    vec3 tc = texture2D(texture0, coord).rgb;
+
+    gl_FragColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl120/posterization.fs

@@ -0,0 +1,27 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+float gamma = 0.6;
+float numColors = 8.0;
+
+void main() 
+{ 
+    vec3 color = texture2D(texture0, fragTexCoord.xy).rgb;
+    
+    color = pow(color, vec3(gamma, gamma, gamma));
+    color = color*numColors;
+    color = floor(color);
+    color = color/numColors;
+    color = pow(color, vec3(1.0/gamma));
+    
+    gl_FragColor = vec4(color, 1.0);
+}

Examples/shaders/resources/shaders/glsl120/predator.fs

@@ -0,0 +1,29 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+void main() 
+{
+    vec3 color = texture2D(texture0, fragTexCoord).rgb;
+    vec3 colors[3];
+    colors[0] = vec3(0.0, 0.0, 1.0);
+    colors[1] = vec3(1.0, 1.0, 0.0);
+    colors[2] = vec3(1.0, 0.0, 0.0);
+    
+    float lum = (color.r + color.g + color.b)/3.0;
+
+    vec3 tc = vec3(0.0, 0.0, 0.0);
+    
+    if (lum < 0.5) tc = mix(colors[0], colors[1], lum/0.5);
+    else tc = mix(colors[1], colors[2], (lum - 0.5)/0.5);
+
+    gl_FragColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl120/scanlines.fs

@@ -0,0 +1,42 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+float offset = 0.0;
+float frequency = 450.0/3.0;
+
+uniform float time;
+
+void main()
+{
+/*
+    // Scanlines method 1
+    float tval = 0; //time
+    vec2 uv = 0.5 + (fragTexCoord - 0.5)*(0.9 + 0.01*sin(0.5*tval));
+
+    vec4 color = texture2D(texture0, fragTexCoord);
+
+    color = clamp(color*0.5 + 0.5*color*color*1.2, 0.0, 1.0);
+    color *= 0.5 + 0.5*16.0*uv.x*uv.y*(1.0 - uv.x)*(1.0 - uv.y);
+    color *= vec4(0.8, 1.0, 0.7, 1);
+    color *= 0.9 + 0.1*sin(10.0*tval + uv.y*1000.0);
+    color *= 0.97 + 0.03*sin(110.0*tval);
+
+    fragColor = color;
+*/
+    // Scanlines method 2
+    float globalPos = (fragTexCoord.y + offset) * frequency;
+    float wavePos = cos((fract(globalPos) - 0.5)*3.14);
+    
+    vec4 color = texture2D(texture0, fragTexCoord);
+
+    gl_FragColor = mix(vec4(0.0, 0.3, 0.0, 0.0), color, wavePos);
+}

Examples/shaders/resources/shaders/glsl120/sobel.fs

@@ -0,0 +1,38 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+vec2 resolution = vec2(800.0, 450.0);
+
+void main() 
+{
+	float x = 1.0/resolution.x;
+	float y = 1.0/resolution.y;
+    
+	vec4 horizEdge = vec4(0.0);
+	horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y - y))*1.0;
+	horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y    ))*2.0;
+	horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y + y))*1.0;
+	horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y - y))*1.0;
+	horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y    ))*2.0;
+	horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y + y))*1.0;
+    
+	vec4 vertEdge = vec4(0.0);
+	vertEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y - y))*1.0;
+	vertEdge -= texture2D(texture0, vec2(fragTexCoord.x    , fragTexCoord.y - y))*2.0;
+	vertEdge -= texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y - y))*1.0;
+	vertEdge += texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y + y))*1.0;
+	vertEdge += texture2D(texture0, vec2(fragTexCoord.x    , fragTexCoord.y + y))*2.0;
+	vertEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y + y))*1.0;
+    
+	vec3 edge = sqrt((horizEdge.rgb*horizEdge.rgb) + (vertEdge.rgb*vertEdge.rgb));
+	
+	gl_FragColor = vec4(edge, texture2D(texture0, fragTexCoord).a);
+}

Examples/shaders/resources/shaders/glsl120/swirl.fs

@@ -0,0 +1,44 @@
+#version 120
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+// NOTE: Render size values should be passed from code
+const float renderWidth = 800;
+const float renderHeight = 450;
+
+float radius = 250.0;
+float angle = 0.8;
+
+uniform vec2 center;
+
+void main()
+{
+    vec2 texSize = vec2(renderWidth, renderHeight);
+    vec2 tc = fragTexCoord*texSize;
+    tc -= center;
+    
+    float dist = length(tc);
+
+    if (dist < radius) 
+    {
+        float percent = (radius - dist)/radius;
+        float theta = percent*percent*angle*8.0;
+        float s = sin(theta);
+        float c = cos(theta);
+        
+        tc = vec2(dot(tc, vec2(c, -s)), dot(tc, vec2(s, c)));
+    }
+
+    tc += center;
+    vec4 color = texture2D(texture0, tc/texSize)*colDiffuse*fragColor;;
+
+    gl_FragColor = vec4(color.rgb, 1.0);;
+}

Examples/shaders/resources/shaders/glsl330/base.fs

@@ -0,0 +1,25 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec4 texelColor = texture(texture0, fragTexCoord);
+    
+    // NOTE: Implement here your fragment shader code
+    
+    finalColor = texelColor*colDiffuse;
+}
+

Examples/shaders/resources/shaders/glsl330/base.vs

@@ -0,0 +1,26 @@
+#version 330
+
+// Input vertex attributes
+in vec3 vertexPosition;
+in vec2 vertexTexCoord;
+in vec3 vertexNormal;
+in vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvp;
+
+// Output vertex attributes (to fragment shader)
+out vec2 fragTexCoord;
+out vec4 fragColor;
+
+// NOTE: Add here your custom variables 
+
+void main()
+{
+    // Send vertex attributes to fragment shader
+    fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+    
+    // Calculate final vertex position
+    gl_Position = mvp*vec4(vertexPosition, 1.0);
+}

Examples/shaders/resources/shaders/glsl330/bloom.fs

@@ -0,0 +1,40 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+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
+
+void main()
+{
+    vec4 sum = vec4(0);
+    vec2 sizeFactor = vec2(1)/size*quality;
+
+    // Texel color fetching from texture sampler
+    vec4 source = texture(texture0, fragTexCoord);
+
+    const int range = 2;            // should be = (samples - 1)/2;
+
+    for (int x = -range; x <= range; x++)
+    {
+        for (int y = -range; y <= range; y++)
+        {
+            sum += texture(texture0, fragTexCoord + vec2(x, y)*sizeFactor);
+        }
+    }
+
+    // Calculate final fragment color
+    finalColor = ((sum/(samples*samples)) + source)*colDiffuse;
+}

Examples/shaders/resources/shaders/glsl330/blur.fs

@@ -0,0 +1,35 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+// NOTE: Render size values must be passed from code
+const float renderWidth = 800;
+const float renderHeight = 450;
+
+float offset[3] = float[](0.0, 1.3846153846, 3.2307692308);
+float weight[3] = float[](0.2270270270, 0.3162162162, 0.0702702703);
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec3 texelColor = texture(texture0, fragTexCoord).rgb*weight[0];
+    
+    for (int i = 1; i < 3; i++) 
+    {
+        texelColor += texture(texture0, fragTexCoord + vec2(offset[i])/renderWidth, 0.0).rgb*weight[i];
+        texelColor += texture(texture0, fragTexCoord - vec2(offset[i])/renderWidth, 0.0).rgb*weight[i];
+    }
+
+    finalColor = vec4(texelColor, 1.0);
+}

Examples/shaders/resources/shaders/glsl330/cross_hatching.fs

@@ -0,0 +1,48 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+float hatchOffsetY = 5.0;
+float lumThreshold01 = 0.9;
+float lumThreshold02 = 0.7;
+float lumThreshold03 = 0.5;
+float lumThreshold04 = 0.3;
+
+void main()
+{
+    vec3 tc = vec3(1.0, 1.0, 1.0);
+    float lum = length(texture(texture0, fragTexCoord).rgb);
+
+    if (lum < lumThreshold01) 
+    {
+        if (mod(gl_FragCoord.x + gl_FragCoord.y, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
+    }
+
+    if (lum < lumThreshold02) 
+    {
+        if (mod(gl_FragCoord.x - gl_FragCoord.y, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
+    }
+
+    if (lum < lumThreshold03) 
+    {
+        if (mod(gl_FragCoord.x + gl_FragCoord.y - hatchOffsetY, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
+    }
+
+    if (lum < lumThreshold04) 
+    {
+        if (mod(gl_FragCoord.x - gl_FragCoord.y - hatchOffsetY, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
+    }
+
+    finalColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl330/cross_stitching.fs

@@ -0,0 +1,59 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+// NOTE: Render size values must be passed from code
+const float renderWidth = 800.0;
+const float renderHeight = 450.0;
+
+float stitchingSize = 6.0;
+
+uniform int invert = 0;
+
+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));
+    tlPos *= size;
+
+    int remX = int(mod(cPos.x, size));
+    int remY = int(mod(cPos.y, size));
+
+    if (remX == 0 && remY == 0) tlPos = cPos;
+
+    vec2 blPos = tlPos;
+    blPos.y += (size - 1.0);
+
+    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 = texture(tex, tlPos * vec2(1.0/renderWidth, 1.0/renderHeight)) * 1.4;
+    }
+    else
+    {
+        if (invert == 1) c = texture(tex, tlPos * vec2(1.0/renderWidth, 1.0/renderHeight)) * 1.4;
+        else c = vec4(0.0, 0.0, 0.0, 1.0);
+    }
+    
+    return c;
+}
+
+void main()
+{
+    vec3 tc = PostFX(texture0, fragTexCoord).rgb;
+
+    finalColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl330/depth.fs

@@ -0,0 +1,27 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;     // Depth texture
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    float zNear = 0.01; // camera z near
+    float zFar = 10.0;  // camera z far
+    float z = texture(texture0, fragTexCoord).x;
+
+    // Linearize depth value
+    float depth = (2.0*zNear)/(zFar + zNear - z*(zFar - zNear));
+    
+    // Calculate final fragment color
+    finalColor = vec4(depth, depth, depth, 1.0f);
+}

Examples/shaders/resources/shaders/glsl330/distortion.fs

@@ -0,0 +1,56 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+
+// Input uniform values
+uniform sampler2D texture0;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Default parameters for Oculus Rift DK2 device
+const vec2 LeftLensCenter = vec2(0.2863248, 0.5);
+const vec2 RightLensCenter = vec2(0.7136753, 0.5);
+const vec2 LeftScreenCenter = vec2(0.25, 0.5);
+const vec2 RightScreenCenter = vec2(0.75, 0.5);
+const vec2 Scale = vec2(0.25, 0.45);
+const vec2 ScaleIn = vec2(4.0, 2.5);
+const vec4 HmdWarpParam = vec4(1.0, 0.22, 0.24, 0.0);
+const vec4 ChromaAbParam = vec4(0.996, -0.004, 1.014, 0.0);
+
+void main()
+{
+    // The following two variables need to be set per eye
+    vec2 LensCenter = fragTexCoord.x < 0.5 ? LeftLensCenter : RightLensCenter;
+    vec2 ScreenCenter = fragTexCoord.x < 0.5 ? LeftScreenCenter : RightScreenCenter;
+    
+    // Scales input texture coordinates for distortion: vec2 HmdWarp(vec2 fragTexCoord, vec2 LensCenter)
+    vec2 theta = (fragTexCoord - LensCenter)*ScaleIn;   // Scales to [-1, 1]
+    float rSq = theta.x*theta.x + theta.y*theta.y;
+    vec2 theta1 = theta*(HmdWarpParam.x + HmdWarpParam.y*rSq + HmdWarpParam.z*rSq*rSq + HmdWarpParam.w*rSq*rSq*rSq);
+    //vec2 tc = LensCenter + Scale*theta1;
+    
+    // Detect whether blue texture coordinates are out of range since these will scaled out the furthest
+    vec2 thetaBlue = theta1*(ChromaAbParam.z + ChromaAbParam.w*rSq);
+    vec2 tcBlue = LensCenter + Scale*thetaBlue;
+
+    if (any(bvec2(clamp(tcBlue, ScreenCenter - vec2(0.25, 0.5), ScreenCenter + vec2(0.25, 0.5)) - tcBlue))) finalColor = vec4(0.0, 0.0, 0.0, 1.0);
+    else
+    {
+        // Do blue texture lookup
+        float blue = texture(texture0, tcBlue).b;
+
+        // Do green lookup (no scaling)
+        vec2 tcGreen = LensCenter + Scale*theta1;
+        float green = texture(texture0, tcGreen).g;
+
+        // Do red scale and lookup
+        vec2 thetaRed = theta1*(ChromaAbParam.x + ChromaAbParam.y*rSq);
+        vec2 tcRed = LensCenter + Scale*thetaRed;
+        float red = texture(texture0, tcRed).r;
+
+        finalColor = vec4(red, green, blue, 1.0);
+    }
+}
+

Examples/shaders/resources/shaders/glsl330/dream_vision.fs

@@ -0,0 +1,34 @@
+#version 330
+
+in vec2 fragTexCoord;
+
+out vec4 fragColor;
+
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    vec4 color = texture(texture0, fragTexCoord);
+
+    color += texture(texture0, fragTexCoord + 0.001);
+    color += texture(texture0, fragTexCoord + 0.003);
+    color += texture(texture0, fragTexCoord + 0.005);
+    color += texture(texture0, fragTexCoord + 0.007);
+    color += texture(texture0, fragTexCoord + 0.009);
+    color += texture(texture0, fragTexCoord + 0.011);
+
+    color += texture(texture0, fragTexCoord - 0.001);
+    color += texture(texture0, fragTexCoord - 0.003);
+    color += texture(texture0, fragTexCoord - 0.005);
+    color += texture(texture0, fragTexCoord - 0.007);
+    color += texture(texture0, fragTexCoord - 0.009);
+    color += texture(texture0, fragTexCoord - 0.011);
+
+    color.rgb = vec3((color.r + color.g + color.b)/3.0);
+    color = color/9.5;
+
+    fragColor = color;
+}			

Examples/shaders/resources/shaders/glsl330/fisheye.fs

@@ -0,0 +1,40 @@
+#version 330
+
+in vec2 fragTexCoord;
+
+out vec4 fragColor;
+
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables 
+
+const float PI = 3.1415926535;
+
+void main()
+{
+    float aperture = 178.0;
+    float apertureHalf = 0.5 * aperture * (PI / 180.0);
+    float maxFactor = sin(apertureHalf);
+
+    vec2 uv = vec2(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;
+        float phi = atan(xy.y, xy.x);
+
+        uv.x = r * cos(phi) + 0.5;
+        uv.y = r * sin(phi) + 0.5;
+    }
+    else
+    {
+        uv = fragTexCoord.xy;
+    }
+
+    fragColor = texture(texture0, uv);
+}

Examples/shaders/resources/shaders/glsl330/grayscale.fs

@@ -0,0 +1,26 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec4 texelColor = texture(texture0, fragTexCoord)*colDiffuse*fragColor;
+    
+    // Convert texel color to grayscale using NTSC conversion weights
+    float gray = dot(texelColor.rgb, vec3(0.299, 0.587, 0.114));
+    
+    // Calculate final fragment color
+    finalColor = vec4(gray, gray, gray, texelColor.a);
+}

Examples/shaders/resources/shaders/glsl330/overdraw.fs

@@ -0,0 +1,26 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    // To show overdraw, we just render all the fragments 
+    // with a solid color and some transparency
+    
+    // NOTE: This is not a postpro render, 
+    // it will only render all screen texture in a plain color
+    
+    finalColor = vec4(1.0, 0.0, 0.0, 0.2);
+}
+

Examples/shaders/resources/shaders/glsl330/pixelizer.fs

@@ -0,0 +1,33 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+// NOTE: Render size values must be passed from code
+const float renderWidth = 800;
+const float renderHeight = 450;
+
+uniform float pixelWidth = 5.0;
+uniform float pixelHeight = 5.0;
+
+void main()
+{
+    float dx = pixelWidth*(1.0/renderWidth);
+    float dy = pixelHeight*(1.0/renderHeight);
+
+    vec2 coord = vec2(dx*floor(fragTexCoord.x/dx), dy*floor(fragTexCoord.y/dy));
+
+    vec3 tc = texture(texture0, coord).rgb;
+
+    finalColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl330/posterization.fs

@@ -0,0 +1,31 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+float gamma = 0.6;
+float numColors = 8.0;
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec3 texelColor = texture(texture0, fragTexCoord.xy).rgb;
+    
+    texelColor = pow(texelColor, vec3(gamma, gamma, gamma));
+    texelColor = texelColor*numColors;
+    texelColor = floor(texelColor);
+    texelColor = texelColor/numColors;
+    texelColor = pow(texelColor, vec3(1.0/gamma));
+    
+    finalColor = vec4(texelColor, 1.0);
+}

Examples/shaders/resources/shaders/glsl330/predator.fs

@@ -0,0 +1,32 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec3 texelColor = texture(texture0, fragTexCoord).rgb;
+    vec3 colors[3];
+    colors[0] = vec3(0.0, 0.0, 1.0);
+    colors[1] = vec3(1.0, 1.0, 0.0);
+    colors[2] = vec3(1.0, 0.0, 0.0);
+    
+    float lum = (texelColor.r + texelColor.g + texelColor.b)/3.0;
+    
+    int ix = (lum < 0.5)? 0:1;
+    
+    vec3 tc = mix(colors[ix], colors[ix + 1], (lum - float(ix)*0.5)/0.5);
+    
+    finalColor = vec4(tc, 1.0);
+}

Examples/shaders/resources/shaders/glsl330/scanlines.fs

@@ -0,0 +1,49 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+// NOTE: Render size values must be passed from code
+const float renderWidth = 800;
+const float renderHeight = 450;
+float offset = 0.0;
+
+uniform float time;
+
+void main()
+{
+    float frequency = renderHeight/3.0;
+/*
+    // Scanlines method 1
+    float tval = 0; //time
+    vec2 uv = 0.5 + (fragTexCoord - 0.5)*(0.9 + 0.01*sin(0.5*tval));
+
+    vec4 color = texture(texture0, fragTexCoord);
+
+    color = clamp(color*0.5 + 0.5*color*color*1.2, 0.0, 1.0);
+    color *= 0.5 + 0.5*16.0*uv.x*uv.y*(1.0 - uv.x)*(1.0 - uv.y);
+    color *= vec4(0.8, 1.0, 0.7, 1);
+    color *= 0.9 + 0.1*sin(10.0*tval + uv.y*1000.0);
+    color *= 0.97 + 0.03*sin(110.0*tval);
+
+    fragColor = color;
+*/
+    // Scanlines method 2
+    float globalPos = (fragTexCoord.y + offset) * frequency;
+    float wavePos = cos((fract(globalPos) - 0.5)*3.14);
+    
+    // Texel color fetching from texture sampler
+    vec4 texelColor = texture(texture0, fragTexCoord);
+
+    finalColor = mix(vec4(0.0, 0.3, 0.0, 0.0), texelColor, wavePos);
+}

Examples/shaders/resources/shaders/glsl330/sobel.fs

@@ -0,0 +1,41 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+uniform vec2 resolution = vec2(800, 450);
+
+void main() 
+{
+	float x = 1.0/resolution.x;
+	float y = 1.0/resolution.y;
+    
+	vec4 horizEdge = vec4(0.0);
+	horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y - y))*1.0;
+	horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y    ))*2.0;
+	horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y + y))*1.0;
+	horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y - y))*1.0;
+	horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y    ))*2.0;
+	horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y + y))*1.0;
+    
+	vec4 vertEdge = vec4(0.0);
+	vertEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y - y))*1.0;
+	vertEdge -= texture2D(texture0, vec2(fragTexCoord.x    , fragTexCoord.y - y))*2.0;
+	vertEdge -= texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y - y))*1.0;
+	vertEdge += texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y + y))*1.0;
+	vertEdge += texture2D(texture0, vec2(fragTexCoord.x    , fragTexCoord.y + y))*2.0;
+	vertEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y + y))*1.0;
+    
+	vec3 edge = sqrt((horizEdge.rgb*horizEdge.rgb) + (vertEdge.rgb*vertEdge.rgb));
+	
+	finalColor = vec4(edge, texture2D(texture0, fragTexCoord).a);
+}

Examples/shaders/resources/shaders/glsl330/swirl.fs

@@ -0,0 +1,47 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// NOTE: Add here your custom variables
+
+// NOTE: Render size values should be passed from code
+const float renderWidth = 800;
+const float renderHeight = 450;
+
+float radius = 250.0;
+float angle = 0.8;
+
+uniform vec2 center = vec2(200.0, 200.0);
+
+void main()
+{
+    vec2 texSize = vec2(renderWidth, renderHeight);
+    vec2 tc = fragTexCoord*texSize;
+    tc -= center;
+    
+    float dist = length(tc);
+
+    if (dist < radius) 
+    {
+        float percent = (radius - dist)/radius;
+        float theta = percent*percent*angle*8.0;
+        float s = sin(theta);
+        float c = cos(theta);
+        
+        tc = vec2(dot(tc, vec2(c, -s)), dot(tc, vec2(s, c)));
+    }
+
+    tc += center;
+    vec4 color = texture2D(texture0, tc/texSize)*colDiffuse*fragColor;;
+
+    finalColor = vec4(color.rgb, 1.0);;
+}

Examples/shaders/shaders_model_shader.cs

@@ -0,0 +1,7 @@
+using Raylib;
+using static Raylib.Raylib;
+
+public partial class Examples
+{
+    /*******************************************************************************************
    *
    *   raylib [shaders] example - Apply a shader to a 3d model
    *
    *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
    *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
    *
    *   NOTE: Shaders used in this example are #version 330 (OpenGL 3.3), to test this example
    *         on OpenGL ES 2.0 platforms (Android, Raspberry Pi, HTML5), use #version 100 shaders
    *         raylib comes with shaders ready for both versions, check raylib/shaders install folder
    *
    *   This example has been created using raylib 1.3 (www.raylib.com)
    *   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
    *
    *   Copyright (c) 2014 Ramon Santamaria (@raysan5)
    *
    ********************************************************************************************/
    
    
    public static void Main()
    {
        // Initialization
        //--------------------------------------------------------------------------------------
        int screenWidth = 800;
        int screenHeight = 450;
        
        SetConfigFlags((int)Flag.MSAA_4X_HINT);      // Enable Multi Sampling Anti Aliasing 4x (if available)
    
        InitWindow(screenWidth, screenHeight, "raylib [shaders] example - model shader");
    
        // Define the camera to look into our 3d world
        Camera camera = { 0 };
        camera.position = new Vector3( 4.0f, 4.0f, 4.0f );;
        camera.target = new Vector3( 0.0f, 1.0f, -1.0f );;
        camera.up = new Vector3( 0.0f, 1.0f, 0.0f );;
        camera.fovy = 45.0f;
        camera.type = CAMERA_PERSPECTIVE;
    
        Model model = LoadModel("resources/models/watermill.obj");                   // Load OBJ model
        Texture2D texture = LoadTexture("resources/models/watermill_diffuse.png");   // Load model texture
        Shader shader = LoadShader("resources/shaders/glsl330/base.vs", 
                                   "resources/shaders/glsl330/grayscale.fs");   // Load model shader
    
        model.material.shader = shader;                     // Set shader effect to 3d model
        model.material.maps[MAP_DIFFUSE].texture = texture; // Bind texture to model
        
        Vector3 position = { 0.0f, 0.0f, 0.0f };    // Set model position
        
        SetCameraMode(camera, CAMERA_FREE);         // Set an orbital camera mode
    
        SetTargetFPS(60);                           // Set our game to run at 60 frames-per-second
        //--------------------------------------------------------------------------------------
    
        // Main game loop
        while (!WindowShouldClose())                // Detect window close button or ESC key
        {
            // Update
            //----------------------------------------------------------------------------------
            UpdateCamera(&camera);                  // Update camera
            //----------------------------------------------------------------------------------
    
            // Draw
            //----------------------------------------------------------------------------------
            BeginDrawing();
    
                ClearBackground(RAYWHITE);
    
                BeginMode3D(camera);
    
                    DrawModel(model, position, 0.2f, WHITE);   // Draw 3d model with texture
    
                    DrawGrid(10, 1.0f);     // Draw a grid
    
                EndMode3D();
                
                DrawText("(c) Watermill 3D model by Alberto Cano", screenWidth - 210, screenHeight - 20, 10, GRAY);
                
                DrawText(FormatText("Camera position: (%.2f, %.2f, %.2f)", camera.position.x, camera.position.y, camera.position.z), 600, 20, 10, BLACK);
                DrawText(FormatText("Camera target: (%.2f, %.2f, %.2f)", camera.target.x, camera.target.y, camera.target.z), 600, 40, 10, GRAY);
    
                DrawFPS(10, 10);
    
            EndDrawing();
            //----------------------------------------------------------------------------------
        }
    
        // De-Initialization
        //--------------------------------------------------------------------------------------
        UnloadShader(shader);       // Unload shader
        UnloadTexture(texture);     // Unload texture
        UnloadModel(model);         // Unload model
    
        CloseWindow();              // Close window and OpenGL context
        //--------------------------------------------------------------------------------------
    
        return 0;
    }    
+}

Examples/shaders/shaders_shapes_textures.cs

@@ -0,0 +1,7 @@
+using Raylib;
+using static Raylib.Raylib;
+
+public partial class Examples
+{
+    /*******************************************************************************************
    *
    *   raylib [shaders] example - Apply a shader to some shape or texture
    *
    *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
    *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
    *
    *   NOTE: Shaders used in this example are #version 330 (OpenGL 3.3), to test this example
    *         on OpenGL ES 2.0 platforms (Android, Raspberry Pi, HTML5), use #version 100 shaders
    *         raylib comes with shaders ready for both versions, check raylib/shaders install folder
    *
    *   This example has been created using raylib 1.7 (www.raylib.com)
    *   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
    *
    *   Copyright (c) 2015 Ramon Santamaria (@raysan5)
    *
    ********************************************************************************************/
    
    
    public static void Main()
    {
        // Initialization
        //--------------------------------------------------------------------------------------
        int screenWidth = 800;
        int screenHeight = 450;
    
        InitWindow(screenWidth, screenHeight, "raylib [shaders] example - shapes and texture shaders");
        
        Texture2D fudesumi = LoadTexture("resources/fudesumi.png");
    
        // NOTE: Using GLSL 330 shader version, on OpenGL ES 2.0 use GLSL 100 shader version 
        Shader shader = LoadShader("resources/shaders/glsl330/base.vs", 
                                   "resources/shaders/glsl330/grayscale.fs");
    
        SetTargetFPS(60);
        //--------------------------------------------------------------------------------------
    
        // Main game loop
        while (!WindowShouldClose())    // Detect window close button or ESC key
        {
            // Update
            //----------------------------------------------------------------------------------
            // TODO: Update your variables here
            //----------------------------------------------------------------------------------
    
            // Draw
            //----------------------------------------------------------------------------------
            BeginDrawing();
    
                ClearBackground(RAYWHITE);
                
                // Start drawing with default shader
    
                DrawText("USING DEFAULT SHADER", 20, 40, 10, RED);
                
                DrawCircle(80, 120, 35, DARKBLUE);
                DrawCircleGradient(80, 220, 60, GREEN, SKYBLUE);
                DrawCircleLines(80, 340, 80, DARKBLUE);
    
                
                // Activate our custom shader to be applied on next shapes/textures drawings
                BeginShaderMode(shader);
                
                    DrawText("USING CUSTOM SHADER", 190, 40, 10, RED);
    
                    DrawRectangle(250 - 60, 90, 120, 60, RED);
                    DrawRectangleGradientH(250 - 90, 170, 180, 130, MAROON, GOLD);
                    DrawRectangleLines(250 - 40, 320, 80, 60, ORANGE);
    
                // Activate our default shader for next drawings
                EndShaderMode();
                
                DrawText("USING DEFAULT SHADER", 370, 40, 10, RED);
                
                DrawTriangle(new Vector2(430, 80);,
                             new Vector2(430 - 60, 150);,
                             new Vector2(430 + 60, 150);, VIOLET);
                             
                DrawTriangleLines(new Vector2(430, 160);,
                                  new Vector2(430 - 20, 230);,
                                  new Vector2(430 + 20, 230);, DARKBLUE);
    
                DrawPoly(new Vector2(430, 320);, 6, 80, 0, BROWN);
                
                // Activate our custom shader to be applied on next shapes/textures drawings
                BeginShaderMode(shader);
    
                    DrawTexture(fudesumi, 500, -30, WHITE);    // Using custom shader
                
                // Activate our default shader for next drawings
                EndShaderMode();
                
                DrawText("(c) Fudesumi sprite by Eiden Marsal", 380, screenHeight - 20, 10, GRAY);
                
            EndDrawing();
            //----------------------------------------------------------------------------------
        }
    
        // De-Initialization
        //--------------------------------------------------------------------------------------
        UnloadShader(shader);       // Unload shader
        UnloadTexture(fudesumi);    // Unload texture
        
        CloseWindow();              // Close window and OpenGL context
        //--------------------------------------------------------------------------------------
    
        return 0;
    }    
+}