stuff

modules/wallpaper-engine/effects/fisheye/preview/shaders/effects/fisheye.frag

@@ -0,0 +1,46 @@
+
+// [COMBO] {"material":"Background","combo":"BACKGROUND","type":"options","default":1}
+
+#include "common.h"
+
+varying vec2 v_TexCoord;
+
+uniform sampler2D g_Texture0; // {"material":"Framebuffer","hidden":true}
+
+uniform float g_Size; // {"material":"Size","default":1,"range":[0.01, 1]}
+uniform float g_Scale; // {"material":"Distortion","default":1,"range":[0, 2.5]}
+uniform vec2 g_Center; // {"material":"Center","default":"0.5 0.5"}
+
+void main() {
+	//vec4 albedo = texSample2D(g_Texture0, v_TexCoord.xy);
+	
+	float aperture = 178.0;
+	float apertureHalf = 0.5 * aperture * (M_PI / 180.0);
+	float maxFactor = sin(apertureHalf);
+
+	vec2 uv;
+	vec2 xy = (v_TexCoord.xy - g_Center) * 2.0 / g_Size;
+	float d = length(xy);
+	float alpha = 1.0;
+	if (d < (2.0 - maxFactor))
+	{
+		d = length(xy * maxFactor);
+		float z = sqrt(1.0 - d * d);
+		float r = atan2(d, z) / M_PI;
+		float phi = atan2(xy.y, xy.x);
+
+		uv.x = r * cos(phi) * g_Size + g_Center.x;
+		uv.y = r * sin(phi) * g_Size + g_Center.y;
+	}
+	else
+	{
+		uv = v_TexCoord.xy;
+#if BACKGROUND == 0
+		alpha = 0.0;
+#endif
+	}
+	
+	vec4 albedo = texSample2D(g_Texture0, mix(v_TexCoord.xy, uv, g_Scale));
+	albedo.a *= alpha;
+	gl_FragColor = albedo;
+}

modules/wallpaper-engine/effects/fisheye/preview/shaders/effects/fisheye.vert

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+
+uniform mat4 g_ModelViewProjectionMatrix;
+
+attribute vec3 a_Position;
+attribute vec2 a_TexCoord;
+
+varying vec2 v_TexCoord;
+
+void main() {
+	gl_Position = mul(vec4(a_Position, 1.0), g_ModelViewProjectionMatrix);
+	v_TexCoord.xy = a_TexCoord;
+}