Added SBS image shader

README.md

@@ -50,7 +50,8 @@
 - [Portal](https://hifi.maki.cat/shaders/portal.fs)
 - [Portal Minimal](https://hifi.maki.cat/shaders/portalMinimal.fs)
 - [Reflective Sphere](https://hifi.maki.cat/shaders/reflectiveSphere.fs)
-- [Stereo Image](https://hifi.maki.cat/shaders/stereoImage.fs)
+- [Reflective Sphere](https://hifi.maki.cat/shaders/reflectiveSphere.fs)
+- [SBS Image](https://hifi.maki.cat/shaders/sbsImage.fs)
 - [TV](https://hifi.maki.cat/shaders/tv.fs)
 - [Water](https://hifi.maki.cat/shaders/water.fs)
 

shaders/sbsImage.fs

@@ -0,0 +1,41 @@
+/*
+{
+	"ProceduralEntity": {
+		"shaderUrl": "https://hifi.maki.cat/shaders/SBSimage.fs",
+		"channels": ["https://cutelab.space/u/V1RdYM.jpg"],
+		"uniforms": {
+			"alphaClipping": 0.5,
+			"fullbright": 0,
+		},
+		"version": 3
+	}
+}
+*/
+
+uniform float alphaClipping = 0.5;
+uniform float fullbright = 0;
+uniform float specular = 0;
+
+float getProceduralFragment(inout ProceduralFragment frag) {
+	vec2 uv = _position.xy+0.5;
+	uv.y *= -1;
+	uv.x *= 0.5;
+	uv.x += cam_getStereoSide()*0.5; // right eye
+
+	vec4 image = texture(iChannel0, uv).rgba;
+	if (image.a < alphaClipping) discard;
+	vec3 color = image.rgb;
+
+	if (fullbright>0.5) {
+		frag.emissive = color;
+		frag.diffuse = vec3(0);
+	} else {
+		frag.diffuse = color;
+	}
+
+	frag.specular = vec3(0);
+	frag.occlusion = 0;
+	frag.roughness = 1;
+
+	return 0;
+}