X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=shaderlib%2Fambientocclusion.glsl;h=286072c03813d420f1be5970ca91034be236c04c;hp=0ca81a40b6cb21ed5fd8af08ce1852f25e94a46d;hb=1b9640375606a305f19c76cf15406202322b5bdf;hpb=63317e423282c1d8a7965743b20a9059a8086e67

diff --git a/shaderlib/ambientocclusion.glsl b/shaderlib/ambientocclusion.glsl
index 0ca81a40..286072c0 100644
--- a/shaderlib/ambientocclusion.glsl
+++ b/shaderlib/ambientocclusion.glsl
@@ -1,9 +1,28 @@
+const int max_samples = 32;
+
+uniform mat4 projection_matrix;
+
 uniform sampler2D depth;
 uniform sampler2D occlusion;
 uniform sampler2D rotate;
 uniform AmbientOcclusionParams
 {
-	vec2 screen_size;
-	vec2 depth_ratio;
+	mat4 inverse_projection;
 	float darkness;
+	vec3 sample_points[max_samples];
+	int n_samples;
+	float occlusion_radius;
 };
+
+////// fragment
+vec3 project(vec3 position)
+{
+	vec4 pp = projection_matrix*vec4(position, 1.0);
+	return pp.xyz/pp.w;
+}
+
+vec3 unproject(vec3 position)
+{
+	vec4 upp = inverse_projection*vec4(position, 1.0);
+	return upp.xyz/upp.w;
+}