1 files changed, 199 insertions, 0 deletions

diff --git a/linden/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl b/linden/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
new file mode 100644
index 0000000..d653408
--- /dev/null
+++ b/linden/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
@@ -0,0 +1,199 @@
+/** 
+ * @file spotLightF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#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*2.0-1.0;
+        
+        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;
+                                }
+                        }
+                }
+        }
+        
+        /*if (spec.a > 0.0)
+        {
+                //vec3 ref = reflect(normalize(pos), norm);
+                float sa = dot(normalize(lv-normalize(pos)),norm);;
+                //sa = max(sa, 0.0);
+                //sa = pow(sa, 128.0 * spec.a*spec.a/dist_atten)*min(dist_atten*4.0, 1.0);
+                sa = texture2D(lightFunc, vec2(sa, spec.a)).a * min(dist_atten*4.0, 1.0);
+                sa *= noise;
+                col += da*sa*lcol*spec.rgb;
+        }*/
+        
+        //attenuate point light contribution by SSAO component
+        col *= texture2DRect(lightMap, frag.xy).g;
+        
+
+        gl_FragColor.rgb = col; 
+        gl_FragColor.a = 0.0;
+}