git-svn-id: svn://db.shs.com.ru/libs@67 a8b55f48-bf90-11e4-a774-851b48703e85

qglview/shaders/ssr.frag

@@ -0,0 +1,17 @@
+#version 150
+
+uniform sampler2D t0, t1, ts;
+uniform float z_near, z_far;
+
+void main(void) {
+	ivec2 tc = ivec2(gl_FragCoord.xy);
+	vec2 sp = qgl_FragTexture.xy;
+	vec4 v0 = texelFetch(t0, tc, 0), v1 = texelFetch(t1, tc, 0), vs = texelFetch(ts, tc, 0);
+	vec3 dc = v0.rgb, n = v1.xyz * 2. - vec3(1.);
+	vec3 vd = vec3(0, 0, 1);
+	vec3 rn = reflect(vd, n);
+	float coeff = clamp(dot(vd, rn), 0, 1);
+	vec3 rvs = texture(ts, sp - rn.xy/v0.w).rgb;
+	qgl_FragData[0].rgb = mix(vs.rgb, rvs, coeff);
+	//qgl_FragData[0].rgb = vec3(v0.w/10);
+}