1 files changed, 5 insertions, 129 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/sunLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/sunLightF.glsl
index d43fe6ca95..d4d686bbb7 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/sunLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/sunLightF.glsl
@@ -1,139 +1,15 @@
 /** 
  * @file sunLightF.glsl
  *
- * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
- * $License$
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
  */
 
-#extension GL_ARB_texture_rectangle : enable
-
-uniform sampler2DRect positionMap;
-uniform sampler2DRect normalMap;
-uniform sampler2DRect depthMap;
-uniform sampler2DShadow shadowMap0;
-uniform sampler2DShadow shadowMap1;
-uniform sampler2DShadow shadowMap2;
-uniform sampler2DShadow shadowMap3;
-uniform sampler2D noiseMap;
-
-// Inputs
-uniform mat4 shadow_matrix[4];
-uniform vec4 shadow_clip;
-uniform float ssao_radius;
-uniform float ssao_max_radius;
-uniform float ssao_factor;
-uniform float ssao_factor_inv;
-
-varying vec2 vary_fragcoord;
-varying vec4 vary_light;
-
-//calculate decreases in ambient lighting when crowded out (SSAO)
-float calcAmbientOcclusion(vec4 pos, vec3 norm)
-{
-	vec2 kern[8];
-	// exponentially (^2) distant occlusion samples spread around origin
-	kern[0] = vec2(-1.0, 0.0) * 0.125*0.125;
-	kern[1] = vec2(1.0, 0.0) * 0.250*0.250;
-	kern[2] = vec2(0.0, 1.0) * 0.375*0.375;
-	kern[3] = vec2(0.0, -1.0) * 0.500*0.500;
-	kern[4] = vec2(0.7071, 0.7071) * 0.625*0.625;
-	kern[5] = vec2(-0.7071, -0.7071) * 0.750*0.750;
-	kern[6] = vec2(-0.7071, 0.7071) * 0.875*0.875;
-	kern[7] = vec2(0.7071, -0.7071) * 1.000*1.000;
+//class 1, no shadow, no SSAO, should never be called
 
-	vec2 pos_screen = vary_fragcoord.xy;
-	vec3 pos_world = pos.xyz;
-	vec2 noise_reflect = texture2D(noiseMap, vary_fragcoord.xy/128.0).xy;
-	
-	float angle_hidden = 0.0;
-	int points = 0;
-	
-	float scale = min(ssao_radius / -pos_world.z, ssao_max_radius);
-	
-	// it was found that keeping # of samples a constant was the fastest, probably due to compiler optimizations (unrolling?)
-	for (int i = 0; i < 8; i++)
-	{
-		vec2 samppos_screen = pos_screen + scale * reflect(kern[i], noise_reflect);
-		vec3 samppos_world = texture2DRect(positionMap, samppos_screen).xyz;
-		
-		vec3 diff = pos_world - samppos_world;
-		float dist2 = dot(diff, diff);
-		
-		// assume each sample corresponds to an occluding sphere with constant radius, constant x-sectional area
-		// --> solid angle shrinking by the square of distance
-		//radius is somewhat arbitrary, can approx with just some constant k * 1 / dist^2
-		//(k should vary inversely with # of samples, but this is taken care of later)
-		
-		//if (dot((samppos_world - 0.05*norm - pos_world), norm) > 0.0)  // -0.05*norm to shift sample point back slightly for flat surfaces
-		//	angle_hidden += min(1.0/dist2, ssao_factor_inv); // dist != 0 follows from conditional.  max of 1.0 (= ssao_factor_inv * ssao_factor)
-		angle_hidden = angle_hidden + float(dot((samppos_world - 0.05*norm - pos_world), norm) > 0.0) * min(1.0/dist2, ssao_factor_inv);
-		
-		// 'blocked' samples (significantly closer to camera relative to pos_world) are "no data", not "no occlusion" 
-		points = points + int(diff.z > -1.0);
-	}
-	
-	angle_hidden = min(ssao_factor*angle_hidden/float(points), 1.0);
-	
-	return 1.0 - (float(points != 0) * angle_hidden);
-}
+#extension GL_ARB_texture_rectangle : enable
 
 void main() 
 {
-	vec2 pos_screen = vary_fragcoord.xy;
-	vec4 pos = vec4(texture2DRect(positionMap, pos_screen).xyz, 1.0);
-        vec3 norm = texture2DRect(normalMap, pos_screen).xyz;
-	
-	/*if (pos.z == 0.0) // do nothing for sky *FIX: REMOVE THIS IF/WHEN THE POSITION MAP IS BEING USED AS A STENCIL
-	{
-		gl_FragColor = vec4(0.0); // doesn't matter
-		return;
-	}*/
-	
-	float shadow = 1.0;
-        float dp_directional_light = max(0.0, dot(norm, vary_light.xyz));
-
-	if (dp_directional_light == 0.0)
-	{
-		// if we know this point is facing away from the sun then we know it's in shadow without having to do a squirrelly shadow-map lookup
-		shadow = 0.0;
-	}
-	else if (pos.z > -shadow_clip.w)
-	{	
-		if (pos.z < -shadow_clip.z)
-		{
-			vec4 lpos = shadow_matrix[3]*pos;
-			shadow = shadow2DProj(shadowMap3, lpos).x;
-			shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
-		}
-		else if (pos.z < -shadow_clip.y)
-		{
-			vec4 lpos = shadow_matrix[2]*pos;
-			shadow = shadow2DProj(shadowMap2, lpos).x;
-		}
-		else if (pos.z < -shadow_clip.x)
-		{
-			vec4 lpos = shadow_matrix[1]*pos;
-			shadow = shadow2DProj(shadowMap1, lpos).x;
-		}
-		else
-		{
-			vec4 lpos = shadow_matrix[0]*pos;
-			shadow = shadow2DProj(shadowMap0, lpos).x;
-		}
-
-		// take the most-shadowed value out of these two:
-		//  * the blurred sun shadow in the light (shadow) map
-		//  * an unblurred dot product between the sun and this norm
-		// the goal is to err on the side of most-shadow to fill-in shadow holes and reduce artifacting
-		shadow = min(shadow, dp_directional_light);
-	}
-	else
-	{
-		// more distant than the shadow map covers - just use directional shading as shadow
-		shadow = dp_directional_light;
-	}
-	
-	gl_FragColor[0] = shadow;
-	gl_FragColor[1] = calcAmbientOcclusion(pos, norm);
-	//gl_FragColor[2] is unused as of August 2008, may be used for debugging
+	gl_FragColor = vec4(0,0,0,0);
 }