1 files changed, 185 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
new file mode 100644
index 0000000000..d0e242c2d4
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
@@ -0,0 +1,185 @@
+/** 
+ * @file spotLightF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+
+#version 120
+
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2DRect diffuseRect;
+uniform sampler2DRect specularRect;
+uniform sampler2DRect depthMap;
+uniform sampler2DRect normalMap;
+uniform samplerCube environmentMap;
+uniform sampler2DRect lightMap;
+uniform sampler2D noiseMap;
+uniform sampler2D lightFunc;
+uniform sampler2D projectionMap;
+
+uniform mat4 proj_mat; //screen space to light space
+uniform float proj_near; //near clip for projection
+uniform vec3 proj_p; //plane projection is emitting from (in screen space)
+uniform vec3 proj_n;
+uniform float proj_focus; //distance from plane to begin blurring
+uniform float proj_lod;  //(number of mips in proj map)
+uniform float proj_range; //range between near clip and far clip plane of projection
+uniform float proj_ambiance;
+uniform float near_clip;
+uniform float far_clip;
+
+uniform vec3 proj_origin; //origin of projection to be used for angular attenuation
+uniform float sun_wash;
+uniform int proj_shadow_idx;
+uniform float shadow_fade;
+
+varying vec4 vary_light;
+
+varying vec4 vary_fragcoord;
+uniform vec2 screen_res;
+
+uniform mat4 inv_proj;
+
+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;
+}
+
+void main() 
+{
+	vec4 frag = vary_fragcoord;
+	frag.xyz /= frag.w;
+	frag.xyz = frag.xyz*0.5+0.5;
+	frag.xy *= screen_res;
+	
+	float shadow = 1.0;
+	
+	if (proj_shadow_idx >= 0)
+	{
+		vec4 shd = texture2DRect(lightMap, frag.xy);
+		float sh[2];
+		sh[0] = shd.b;
+		sh[1] = shd.a;
+		shadow = min(sh[proj_shadow_idx]+shadow_fade, 1.0);
+	}
+	
+	vec3 pos = getPosition(frag.xy).xyz;
+	vec3 lv = vary_light.xyz-pos.xyz;
+	float dist2 = dot(lv,lv);
+	dist2 /= vary_light.w;
+	if (dist2 > 1.0)
+	{
+		discard;
+	}
+	
+	vec3 norm = texture2DRect(normalMap, frag.xy).xyz;
+	norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
+	
+	norm = normalize(norm);
+	float l_dist = -dot(lv, proj_n);
+	
+	vec4 proj_tc = (proj_mat * vec4(pos.xyz, 1.0));
+	if (proj_tc.z < 0.0)
+	{
+		discard;
+	}
+	
+	proj_tc.xyz /= proj_tc.w;
+	
+	float fa = gl_Color.a+1.0;
+	float dist_atten = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
+	
+	lv = proj_origin-pos.xyz;
+	lv = normalize(lv);
+	float da = dot(norm, lv);
+		
+	vec3 col = vec3(0,0,0);
+		
+	vec3 diff_tex = texture2DRect(diffuseRect, frag.xy).rgb;
+		
+	float noise = texture2D(noiseMap, frag.xy/128.0).b;
+	if (proj_tc.z > 0.0 &&
+		proj_tc.x < 1.0 &&
+		proj_tc.y < 1.0 &&
+		proj_tc.x > 0.0 &&
+		proj_tc.y > 0.0)
+	{
+		float lit = 0.0;
+		if (da > 0.0)
+		{
+			float diff = clamp((l_dist-proj_focus)/proj_range, 0.0, 1.0);
+			float lod = diff * proj_lod;
+			
+			vec4 plcol = texture2DLod(projectionMap, proj_tc.xy, lod);
+		
+			vec3 lcol = gl_Color.rgb * plcol.rgb * plcol.a;
+			
+			lit = da * dist_atten * noise;
+			
+			col = lcol*lit*diff_tex*shadow;
+		}
+		
+		float diff = clamp((proj_range-proj_focus)/proj_range, 0.0, 1.0);
+		float lod = diff * proj_lod;
+		vec4 amb_plcol = texture2DLod(projectionMap, proj_tc.xy, lod);
+		//float amb_da = mix(proj_ambiance, proj_ambiance*max(-da, 0.0), max(da, 0.0));
+		float amb_da = proj_ambiance;
+		if (da > 0.0)
+		{
+			amb_da += (da*0.5)*(1.0-shadow)*proj_ambiance;
+		}
+		
+		amb_da += (da*da*0.5+0.5)*proj_ambiance;
+			
+		amb_da *= dist_atten * noise;
+		
+		amb_da = min(amb_da, 1.0-lit);
+		
+		col += amb_da*gl_Color.rgb*diff_tex.rgb*amb_plcol.rgb*amb_plcol.a;
+	}
+	
+	
+	vec4 spec = texture2DRect(specularRect, frag.xy);
+	if (spec.a > 0.0)
+	{
+		vec3 ref = reflect(normalize(pos), norm);
+		
+		//project from point pos in direction ref to plane proj_p, proj_n
+		vec3 pdelta = proj_p-pos;
+		float ds = dot(ref, proj_n);
+		
+		if (ds < 0.0)
+		{
+			vec3 pfinal = pos + ref * dot(pdelta, proj_n)/ds;
+			
+			vec3 stc = (proj_mat * vec4(pfinal.xyz, 1.0)).xyz;
+
+			if (stc.z > 0.0)
+			{
+				stc.xy /= stc.z+proj_near;
+					
+				if (stc.x < 1.0 &&
+					stc.y < 1.0 &&
+					stc.x > 0.0 &&
+					stc.y > 0.0)
+				{
+					vec4 scol = texture2DLod(projectionMap, stc.xy, proj_lod-spec.a*proj_lod);
+					col += dist_atten*scol.rgb*gl_Color.rgb*scol.a*spec.rgb*shadow;
+				}
+			}
+		}
+	}
+	
+	gl_FragColor.rgb = col;	
+	gl_FragColor.a = 0.0;
+}