Added shaders examples resources

examples/resources/shaders/base.vs

@@ -1,19 +1,19 @@
-#version 110
+#version 330
 
-attribute vec3 vertexPosition;
-attribute vec2 vertexTexCoord;
-attribute vec4 vertexColor;
+in vec3 vertexPosition;
+in vec2 vertexTexCoord;
+in vec3 vertexNormal;
+
+out vec2 fragTexCoord;
 
 uniform mat4 projectionMatrix;
 uniform mat4 modelviewMatrix;
 
-varying vec2 fragTexCoord;
-varying vec4 fragColor;
+// NOTE: Add here your custom variables 
 
 void main()
 {
     fragTexCoord = vertexTexCoord;
-    fragColor = vertexColor;
     
     gl_Position = projectionMatrix*modelviewMatrix*vec4(vertexPosition, 1.0);
 }

examples/resources/shaders/bloom.fs

@@ -0,0 +1,42 @@
+#version 330
+
+in vec2 fragTexCoord;
+
+out vec4 fragColor;
+
+uniform sampler2D texture0;
+uniform vec4 tintColor;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    vec4 sum = vec4(0);
+    vec4 tc = vec4(0);
+
+    for (int i = -4; i < 4; i++)
+    {
+        for (int j = -3; j < 3; j++)
+        {
+            sum += texture2D(texture0, fragTexCoord + vec2(j, i)*0.004) * 0.25;
+        }
+    }
+    
+    if (texture2D(texture0, fragTexCoord).r < 0.3)
+    {
+        tc = sum*sum*0.012 + texture2D(texture0, fragTexCoord);
+    }
+    else
+    {
+        if (texture2D(texture0, fragTexCoord).r < 0.5)
+        {
+            tc = sum*sum*0.009 + texture2D(texture0, fragTexCoord);
+        }
+        else
+        {
+            tc = sum*sum*0.0075 + texture2D(texture0, fragTexCoord);
+        }
+    }
+    
+    fragColor = tc;
+}

examples/resources/shaders/grayscale.fs

@@ -1,15 +1,20 @@
-#version 110
+#version 330
+
+in vec2 fragTexCoord;
+
+out vec4 fragColor;
 
 uniform sampler2D texture0;
-varying vec2 fragTexCoord;
-varying vec4 fragColor;
+uniform vec4 tintColor;
+
+// NOTE: Add here your custom variables
 
 void main()
 {
-    vec4 base = texture2D(texture0, fragTexCoord)*fragColor;
-
+    vec4 base = texture2D(texture0, fragTexCoord)*tintColor;
+    
     // Convert to grayscale using NTSC conversion weights
     float gray = dot(base.rgb, vec3(0.299, 0.587, 0.114));
     
-    gl_FragColor = vec4(gray, gray, gray, base.a);
+    fragColor = vec4(gray, gray, gray, tintColor.a);
 }

examples/resources/shaders/shapes_base.vs

@@ -1,16 +1,19 @@
-#version 330
+#version 110
 
 attribute vec3 vertexPosition;
 attribute vec2 vertexTexCoord;
-attribute vec3 vertexNormal;
+attribute vec4 vertexColor;
 
 uniform mat4 projectionMatrix;
 uniform mat4 modelviewMatrix;
 
 varying vec2 fragTexCoord;
+varying vec4 fragColor;
 
 void main()
 {
     fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+    
     gl_Position = projectionMatrix*modelviewMatrix*vec4(vertexPosition, 1.0);
 }

examples/resources/shaders/shapes_grayscale.fs

@@ -1,16 +1,15 @@
-#version 330
+#version 110
 
 uniform sampler2D texture0;
 varying vec2 fragTexCoord;
-
-uniform vec4 tintColor;
+varying vec4 fragColor;
 
 void main()
 {
-    vec4 base = texture2D(texture0, fragTexCoord)*tintColor;
-    
+    vec4 base = texture2D(texture0, fragTexCoord)*fragColor;
+
     // Convert to grayscale using NTSC conversion weights
     float gray = dot(base.rgb, vec3(0.299, 0.587, 0.114));
     
-    gl_FragColor = vec4(gray, gray, gray, tintColor.a);
+    gl_FragColor = vec4(gray, gray, gray, base.a);
 }

examples/resources/shaders/swirl.fs

@@ -0,0 +1,41 @@
+#version 330
+
+in vec2 fragTexCoord;
+
+out vec4 fragColor;
+
+uniform sampler2D texture0;
+uniform vec4 tintColor;
+
+// NOTE: Add here your custom variables
+
+const float renderWidth = 800;      // HARDCODED for example!
+const float renderHeight = 480;     // Use uniforms instead...
+
+float radius = 250.0;
+float angle = 0.8;
+
+uniform vec2 center = vec2(200, 200);
+
+void main (void)
+{
+    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;
+    vec3 color = texture2D(texture0, tc/texSize).rgb;
+
+    fragColor = vec4(color, 1.0);;
+}