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data/shaders/convolution.fragment

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+// __multiversion__
+// This signals the loading code to prepend either #version 100 or #version 300 es as apropriate.
+
+// To use centroid sampling we need to have version 300 es shaders, which requires changing:
+// attribute to in
+// varying to out when in vertex shaders or in when in fragment shaders
+// defining an out vec4 FragColor and replacing uses of gl_FragColor with FragColor
+// texture2D to texture
+#if __VERSION__ >= 300
+
+// version 300 code
+
+#ifdef MSAA_FRAMEBUFFER_ENABLED
+#define _centroid centroid
+#else
+#define _centroid
+#endif
+
+_centroid in vec2 uv;
+
+#define varying in
+#define texture2D texture
+out vec4 FragColor;
+#define gl_FragColor FragColor
+
+#else
+
+// version 100 code
+varying vec2 uv;
+
+#endif
+
+uniform sampler2D TEXTURE_0;
+
+varying vec3 uBlurIncrement;
+
+void main()
+{
+	vec2 imageCoord = uv;
+	vec4 sum = vec4(0.0);
+	vec2 blurSize = uBlurIncrement.xy * uBlurIncrement.z;
+
+	sum += texture2D(TEXTURE_0, imageCoord - blurSize * 9.0) * 0.0014794516787135662;
+	sum += texture2D(TEXTURE_0, imageCoord - blurSize * 8.0) * 0.003804239018665086;
+	sum += texture2D(TEXTURE_0, imageCoord - blurSize * 7.0) * 0.00875346226514214;
+	sum += texture2D(TEXTURE_0, imageCoord - blurSize * 6.0) * 0.018023411141080636;
+	sum += texture2D(TEXTURE_0, imageCoord - blurSize * 5.0) * 0.03320772876259043;
+	sum += texture2D(TEXTURE_0, imageCoord - blurSize * 4.0) * 0.05475028876252328;
+	sum += texture2D(TEXTURE_0, imageCoord - blurSize * 3.0) * 0.0807753247211904;
+	sum += texture2D(TEXTURE_0, imageCoord - blurSize * 2.0) * 0.10663900118033988;
+	sum += texture2D(TEXTURE_0, imageCoord - blurSize * 1.0) * 0.12597909446198644;
+	sum += texture2D(TEXTURE_0, imageCoord) * 0.1331759960155365;
+	sum += texture2D(TEXTURE_0, imageCoord + blurSize * 1.0) * 0.12597909446198644;
+	sum += texture2D(TEXTURE_0, imageCoord + blurSize * 2.0) * 0.10663900118033988;
+	sum += texture2D(TEXTURE_0, imageCoord + blurSize * 3.0) * 0.0807753247211904;
+	sum += texture2D(TEXTURE_0, imageCoord + blurSize * 4.0) * 0.05475028876252328;
+	sum += texture2D(TEXTURE_0, imageCoord + blurSize * 5.0) * 0.03320772876259043;
+	sum += texture2D(TEXTURE_0, imageCoord + blurSize * 6.0) * 0.018023411141080636;
+	sum += texture2D(TEXTURE_0, imageCoord + blurSize * 7.0) * 0.00875346226514214;
+	sum += texture2D(TEXTURE_0, imageCoord + blurSize * 8.0) * 0.003804239018665086;
+	sum += texture2D(TEXTURE_0, imageCoord + blurSize * 9.0) * 0.0014794516787135662;
+
+	gl_FragColor = sum;
+}