git-svn-id: svn://db.shs.com.ru/libs@72 a8b55f48-bf90-11e4-a774-851b48703e85

qglview/shaders/ssao_merge.frag

@@ -1,6 +1,7 @@
 #version 150
 
 uniform sampler2D t0, ts, tg1;
+uniform sampler1D n0;
 uniform float z_near, z_far;
 uniform mat4 mat_proj;
 
@@ -9,7 +10,7 @@ in vec3 view_dir;
 void main(void) {
 	ivec2 tc = ivec2(gl_FragCoord.xy);
 	vec4 v0 = texelFetch(t0, tc, 0), vs = texelFetch(ts, tc, 0), vg1 = texelFetch(tg1, tc, 0);
-	/*vec3 n = vec3(-vg1.xy, vg1.z);
+	vec3 n = vec3(vg1.xyz);
 	vec3 bn = cross(n, vec3(0, 0, 1));
 	vec3 bn2 = cross(n, bn);
 	vec4 pos;
@@ -17,7 +18,8 @@ void main(void) {
 	pos.xyz = view_dir * vs.w;
 	vec4 spos = pos, tpos, tv0;
 	vec2 tsp;
-	float l = 20 * 0.5;
+	float sclz = dot(vec3(0,0,1), n);
+	/*float l = 20 * 0.5;
 	pos.xyz += bn2 * l;
 	for (int i = 0; i < 16; ++i) {
 		tpos = mat_proj * pos;
@@ -26,10 +28,26 @@ void main(void) {
 		l *= 0.5;
 		pos.xyz += bn2 * (step(pos.z, tv0.w) * 2. - 1.) * l;
 	}*/
+	/*vec3 rn;
+	float ss = 0.;
+	for (int i = 0; i < 32; ++i) {
+		rn = texelFetch(n0, i, 0).rgb * 2 - 1;
+		rn *= step(0., dot(n, rn)) * 2 - 1.;
+		//rn /= 10;
+		rn /= vs.w;
+		spos = pos + vec4(rn, 0);
+		tpos = mat_proj * spos;
+		tsp = -(tpos.xy / tpos.w) / 2. + 0.5;
+		tv0 = texture(ts, tsp);
+		//spos.z = tv0.w;
+		ss += step(-0.1, tv0.w-vs.w);
+		//ss += step(vs.w, tv0.w);
+	}
+	ss /= 32;*/
 	float minz = v0.r, maxz = v0.g, blurz = v0.b, curz = v0.w, avgz = (minz+maxz)/2;
 	float dz = maxz - minz;
-	qgl_FragData[0].rgb = vec3(max(-(blurz - curz) / maxz,0.)* (curz-minz) / dz * 10);
-	//qgl_FragData[0].rgb = vec3(v0.b / 10);
+	//qgl_FragData[0].rgb = vec3(max(-(blurz - curz) / maxz,0.)* (curz-minz) / dz * 10);
+	qgl_FragData[0].rgb = vec3(blurz/10);
 	//qgl_FragData[0].rgb = vec3(length(pos.z - spos.z)/15);
 	//qgl_FragData[0].rgb = vec3(abs(v0.w/1));
 }