Chromatic aberration

Shaders/chromatic_aberration_pass/chromatic_aberration_pass.frag.glsl

@@ -0,0 +1,69 @@
+#version 450
+
+#include "compiled.inc"
+
+uniform sampler2D tex;
+
+in vec2 texCoord;
+out vec4 fragColor;
+
+vec2 barrelDistortion(vec2 coord, float amt) {
+	vec2 cc = coord - 0.5;
+	float dist = dot(cc, cc);
+	return coord + cc * dist * amt;
+}
+float sat(float value)
+{
+	return clamp(value, 0.0, 1.0);
+}
+float linterp(float t) {
+	return sat(1.0 - abs(2.0 * t - 1.0) );
+}
+float remap(float t, float a, float b ) {
+	return sat((t - a) / (b - a));
+}
+vec4 spectrum_offset(float t) {
+	vec4 ret;
+	float low = step(t,0.5);
+	float high = 1.0 - low;
+	float minMap = 1.0;
+	float maxMap = 6.0;
+	float w = linterp( remap(t, minMap/maxMap, 5.0/maxMap ) );
+	ret = vec4(low, 1.0, high, 1.) * vec4(1.0-w, w, 1.0-w, 1.0);
+
+	return pow(ret, vec4(1.0/2.2) );
+}
+
+void main() {
+
+	float max_distort = compoChromaticStrength;
+	int num_iter = compoChromaticSamples;
+
+	float reci_num_iter_f = 1.0 / float(num_iter);
+
+	if (compoChromaticType == 1) {
+		vec2 resolution = vec2(1,1);
+		vec2 uv = (texCoord.xy/resolution.xy);
+		vec4 sumcol = vec4(0.0);
+		vec4 sumw = vec4(0.0);	
+		for (int i=0; i < num_iter; ++i)
+		{
+			float t = float(i) * reci_num_iter_f;
+			vec4 w = spectrum_offset(t);
+			sumw += w;
+			sumcol += w * texture(tex, barrelDistortion(uv, 0.6 * max_distort * t));
+		}
+			
+		fragColor = sumcol / sumw;
+		
+	} else {
+
+		vec3 col = vec3(0.0);
+		col.x = texture(tex, texCoord + ((vec2(0.0, 1.0) * max_distort) / vec2(1000.0))).x;
+		col.y = texture(tex, texCoord + ((vec2(-0.85, -0.5) * max_distort) / vec2(1000.0))).y;
+		col.z = texture(tex, texCoord + ((vec2(0.85, -0.5) * max_distort) / vec2(1000.0))).z;
+		fragColor = vec4(col.x, col.y, col.z, fragColor.w);
+
+	}
+
+}

Shaders/chromatic_aberration_pass/chromatic_aberration_pass.json

@@ -0,0 +1,15 @@
+{
+	"contexts": [
+		{
+			"name": "chromatic_aberration_pass",
+			"depth_write": false,
+			"color_write_alpha": false,
+			"compare_mode": "always",
+			"cull_mode": "none",
+			"links": [],
+			"texture_params": [],
+			"vertex_shader": "../include/pass.vert.glsl",
+			"fragment_shader": "chromatic_aberration_pass.frag.glsl"
+		}
+	]
+}

Sources/armory/renderpath/RenderPathDeferred.hx

@@ -378,6 +378,14 @@ class RenderPathDeferred {
 			path.renderTargets.set(t.name, rt);
 		}