1 files changed, 165 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/giF.glsl b/indra/newview/app_settings/shaders/class1/deferred/giF.glsl
new file mode 100644
index 0000000000..b351eec6e5
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+++ b/indra/newview/app_settings/shaders/class1/deferred/giF.glsl
@@ -0,0 +1,165 @@
+/** 
+ * @file giF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2DRect depthMap;
+uniform sampler2DRect normalMap;
+uniform sampler2D noiseMap;
+
+uniform sampler2D		diffuseGIMap;
+uniform sampler2D		normalGIMap;
+uniform sampler2D		depthGIMap;
+
+uniform sampler2D		lightFunc;
+
+// Inputs
+varying vec2 vary_fragcoord;
+
+uniform vec2 screen_res;
+
+uniform mat4 inv_proj;
+uniform mat4 gi_mat;  //gPipeline.mGIMatrix - eye space to sun space
+uniform mat4 gi_mat_proj; //gPipeline.mGIMatrixProj - eye space to projected sun space
+uniform mat4 gi_norm_mat; //gPipeline.mGINormalMatrix - eye space normal to sun space normal matrix
+uniform mat4 gi_inv_proj; //gPipeline.mGIInvProj - projected sun space to sun space
+uniform float gi_radius;
+uniform float gi_intensity;
+uniform int gi_samples;
+uniform vec2 gi_kern[25];
+uniform vec2 gi_scale;
+uniform vec3 gi_quad;
+uniform vec3 gi_spec;
+uniform float gi_direction_weight;
+uniform float gi_light_offset;
+
+vec4 getPosition(vec2 pos_screen)
+{
+	float depth = texture2DRect(depthMap, pos_screen.xy).a;
+	vec2 sc = pos_screen.xy*2.0;
+	sc /= screen_res;
+	sc -= vec2(1.0,1.0);
+	vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
+	vec4 pos = inv_proj * ndc;
+	pos /= pos.w;
+	pos.w = 1.0;
+	return pos;
+}
+
+vec4 getGIPosition(vec2 gi_tc)
+{
+	float depth = texture2D(depthGIMap, gi_tc).a;
+	vec2 sc = gi_tc*2.0;
+	sc -= vec2(1.0, 1.0);
+	vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
+	vec4 pos = gi_inv_proj*ndc;
+	pos.xyz /= pos.w;
+	pos.w = 1.0;
+	return pos;
+}
+
+vec3 giAmbient(vec3 pos, vec3 norm)
+{
+	vec4 gi_c = gi_mat_proj * vec4(pos, 1.0);
+	gi_c.xyz /= gi_c.w;
+
+	vec4 gi_pos = gi_mat*vec4(pos,1.0);
+	vec3 gi_norm = (gi_norm_mat*vec4(norm,1.0)).xyz;
+	gi_norm = normalize(gi_norm);
+	
+	vec2 tcx = gi_norm.xy;
+	vec2 tcy = gi_norm.yx;
+	
+	vec4 eye_pos = gi_mat*vec4(0,0,0,1.0);
+	
+	vec3 eye_dir = normalize(gi_pos.xyz-eye_pos.xyz/eye_pos.w);
+	
+	//vec3 eye_dir = vec3(0,0,-1);
+	//eye_dir = (gi_norm_mat*vec4(eye_dir, 1.0)).xyz;
+	//eye_dir = normalize(eye_dir);
+	
+	//float round_x = gi_scale.x;
+	//float round_y = gi_scale.y;
+	
+	vec3 debug = texture2D(normalGIMap, gi_c.xy).rgb*0.5+0.5;
+	debug.xz = vec2(0.0,0.0);
+	//debug = fract(debug);
+	
+	float round_x = 1.0/64.0;
+	float round_y = 1.0/64.0;
+	
+	//gi_c.x = floor(gi_c.x/round_x+0.5)*round_x;
+	//gi_c.y = floor(gi_c.y/round_y+0.5)*round_y;
+	
+	float fda = 0.0;
+	vec3 fdiff = vec3(0,0,0);
+	
+	vec3 rcol = vec3(0,0,0);
+	
+	float fsa = 0.0;
+	
+	for (int i = -1; i < 2; i+=2 )
+	{
+		for (int j = -1; j < 2; j+=2)
+		{
+			vec2 tc = vec2(i, j)*0.75;
+			vec3 nz = texture2D(noiseMap, vary_fragcoord.xy/128.0+tc*0.5).xyz;
+			//tc += gi_norm.xy*nz.z;
+			tc += nz.xy*2.0;
+			tc /= gi_samples;
+			tc += gi_c.xy;
+			
+			vec3 lnorm = -normalize(texture2D(normalGIMap, tc.xy).xyz*2.0-1.0);
+			vec3 lpos = getGIPosition(tc.xy).xyz;
+							
+			vec3 at = lpos-gi_pos.xyz;
+			float dist = dot(at,at);
+			float da = clamp(1.0/(gi_spec.x*dist), 0.0, 1.0);
+			
+			if (da > 0.0)
+			{
+				//add angular attenuation
+				vec3 ldir = at;
+				float ang_atten = clamp(dot(ldir, gi_norm), 0.0, 1.0);
+			
+				float ld = -dot(ldir, lnorm);
+				
+				if (ang_atten > 0.0 && ld < 0.0)
+				{
+					vec3 diff = texture2D(diffuseGIMap, tc.xy).xyz;
+					da = da*ang_atten;
+					fda += da;
+					fdiff += diff*da;
+				}
+			}
+		}
+	}
+
+	fdiff /= max(gi_spec.y*fda, gi_quad.z);
+	fdiff = clamp(fdiff, vec3(0), vec3(1));
+	
+	vec3 ret = fda*fdiff;
+	//ret = ret*ret*gi_quad.x+ret*gi_quad.y+gi_quad.z;			
+
+	//fda *= nz.z;
+	
+	//rcol.rgb *= gi_intensity;
+	//return rcol.rgb+vary_AmblitColor.rgb*0.25;
+	//return vec4(debug, 0.0);
+	//return vec4(fda*fdiff, 0.0);
+	return clamp(ret,vec3(0.0), vec3(1.0));
+	//return debug.xyz;
+}
+
+void main() 
+{
+	vec2 pos_screen = vary_fragcoord.xy;
+	vec4 pos = getPosition(pos_screen);
+	vec3 norm = texture2DRect(normalMap, pos_screen).xyz*2.0-1.0;
+	
+	gl_FragData[0].xyz = giAmbient(pos, norm);
+}