WIP for 10374 (reduce number of shaders linking against deferredUtil).

Prepare for using ifdef to conditionally engage using gl_FragDepth in water shaders
(because GL requires that writing to gl_FragDepth on any path means you need to
 write a depth value on every path).

2 files changed, 97 insertions, 94 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
index 24804c3011..2569e49743 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
@@ -140,7 +140,7 @@ void main()
 		discard;
 	}
 		
-	float envIntensity = texture2DRect(normalMap. frag.xy).z;
+	float envIntensity = texture2DRect(normalMap, frag.xy).z;
 	vec3 norm = getNorm(frag.xy);
 
 	float l_dist = -dot(lv, proj_n);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl b/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl
index d9ae37fbfa..df7b8f3f92 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl
@@ -55,6 +55,7 @@ uniform float fresnelOffset;
 uniform float blurMultiplier;
 uniform vec2 screen_res;
 uniform mat4 norm_mat; //region space to screen space
+uniform int water_edge;
 
 //bigWave is (refCoord.w, view.w);
 VARYING vec4 refCoord;
@@ -73,105 +74,107 @@ vec3 BlendNormal(vec3 bump1, vec3 bump2)
 
 void main() 
 {
-	vec4 color;
-	float dist = length(view.xy);
-	
-	//normalize view vector
-	vec3 viewVec = normalize(view.xyz);
-	
-	//get wave normals
-	vec3 wave1_a = texture2D(bumpMap, vec2(refCoord.w, view.w)).xyz*2.0-1.0;
-	vec3 wave2_a = texture2D(bumpMap, littleWave.xy).xyz*2.0-1.0;
-	vec3 wave3_a = texture2D(bumpMap, littleWave.zw).xyz*2.0-1.0;
-
-
-	vec3 wave1_b = texture2D(bumpMap2, vec2(refCoord.w, view.w)).xyz*2.0-1.0;
-	vec3 wave2_b = texture2D(bumpMap2, littleWave.xy).xyz*2.0-1.0;
-	vec3 wave3_b = texture2D(bumpMap2, littleWave.zw).xyz*2.0-1.0;
+    vec4 color;
+    float dist = length(view.xy);
+    
+    //normalize view vector
+    vec3 viewVec = normalize(view.xyz);
+    
+    //get wave normals
+    vec3 wave1_a = texture2D(bumpMap, vec2(refCoord.w, view.w)).xyz*2.0-1.0;
+    vec3 wave2_a = texture2D(bumpMap, littleWave.xy).xyz*2.0-1.0;
+    vec3 wave3_a = texture2D(bumpMap, littleWave.zw).xyz*2.0-1.0;
+
+
+    vec3 wave1_b = texture2D(bumpMap2, vec2(refCoord.w, view.w)).xyz*2.0-1.0;
+    vec3 wave2_b = texture2D(bumpMap2, littleWave.xy).xyz*2.0-1.0;
+    vec3 wave3_b = texture2D(bumpMap2, littleWave.zw).xyz*2.0-1.0;
 
     vec3 wave1 = BlendNormal(wave1_a, wave1_b);
     vec3 wave2 = BlendNormal(wave2_a, wave2_b);
     vec3 wave3 = BlendNormal(wave3_a, wave3_b);
 
-	//get base fresnel components	
-	
-	vec3 df = vec3(
-					dot(viewVec, wave1),
-					dot(viewVec, (wave2 + wave3) * 0.5),
-					dot(viewVec, wave3)
-				 ) * fresnelScale + fresnelOffset;
-	df *= df;
-		    
-	vec2 distort = (refCoord.xy/refCoord.z) * 0.5 + 0.5;
-	
-	float dist2 = dist;
-	dist = max(dist, 5.0);
-	
-	float dmod = sqrt(dist);
-	
-	vec2 dmod_scale = vec2(dmod*dmod, dmod);
-	
-	//get reflected color
-	vec2 refdistort1 = wave1.xy*normScale.x;
-	vec2 refvec1 = distort+refdistort1/dmod_scale;
-	vec4 refcol1 = texture2D(refTex, refvec1);
-	
-	vec2 refdistort2 = wave2.xy*normScale.y;
-	vec2 refvec2 = distort+refdistort2/dmod_scale;
-	vec4 refcol2 = texture2D(refTex, refvec2);
-	
-	vec2 refdistort3 = wave3.xy*normScale.z;
-	vec2 refvec3 = distort+refdistort3/dmod_scale;
-	vec4 refcol3 = texture2D(refTex, refvec3);
-
-	vec4 refcol = refcol1 + refcol2 + refcol3;
-	float df1 = df.x + df.y + df.z;
-	refcol *= df1 * 0.333;
-	
-	vec3 wavef = (wave1 + wave2 * 0.4 + wave3 * 0.6) * 0.5;
-	wavef.z *= max(-viewVec.z, 0.1);
-	wavef = normalize(wavef);
-	
-	float df2 = dot(viewVec, wavef) * fresnelScale+fresnelOffset;
-	
-	vec2 refdistort4 = wavef.xy*0.125;
-	refdistort4.y -= abs(refdistort4.y);
-	vec2 refvec4 = distort+refdistort4/dmod;
-	float dweight = min(dist2*blurMultiplier, 1.0);
-	vec4 baseCol = texture2D(refTex, refvec4);
-
-	refcol = mix(baseCol*df2, refcol, dweight);
-
-	//get specular component
-	float spec = clamp(dot(lightDir, (reflect(viewVec,wavef))),0.0,1.0);
-		
-	//harden specular
-	spec = pow(spec, 128.0);
-
-	//figure out distortion vector (ripply)   
-	vec2 distort2 = distort+wavef.xy*refScale * 0.33/max(dmod*df1, 1.0);
-		
-	vec4 fb = texture2D(screenTex, distort2);
-	
-	//mix with reflection
-	// Note we actually want to use just df1, but multiplying by 0.999999 gets around an nvidia compiler bug
+    //get base fresnel components   
+    
+    vec3 df = vec3(
+                    dot(viewVec, wave1),
+                    dot(viewVec, (wave2 + wave3) * 0.5),
+                    dot(viewVec, wave3)
+                 ) * fresnelScale + fresnelOffset;
+    df *= df;
+            
+    vec2 distort = (refCoord.xy/refCoord.z) * 0.5 + 0.5;
+    
+    float dist2 = dist;
+    dist = max(dist, 5.0);
+    
+    float dmod = sqrt(dist);
+    
+    vec2 dmod_scale = vec2(dmod*dmod, dmod);
+    
+    //get reflected color
+    vec2 refdistort1 = wave1.xy*normScale.x;
+    vec2 refvec1 = distort+refdistort1/dmod_scale;
+    vec4 refcol1 = texture2D(refTex, refvec1);
+    
+    vec2 refdistort2 = wave2.xy*normScale.y;
+    vec2 refvec2 = distort+refdistort2/dmod_scale;
+    vec4 refcol2 = texture2D(refTex, refvec2);
+    
+    vec2 refdistort3 = wave3.xy*normScale.z;
+    vec2 refvec3 = distort+refdistort3/dmod_scale;
+    vec4 refcol3 = texture2D(refTex, refvec3);
+
+    vec4 refcol = refcol1 + refcol2 + refcol3;
+    float df1 = df.x + df.y + df.z;
+    refcol *= df1 * 0.333;
+    
+    vec3 wavef = (wave1 + wave2 * 0.4 + wave3 * 0.6) * 0.5;
+    wavef.z *= max(-viewVec.z, 0.1);
+    wavef = normalize(wavef);
+    
+    float df2 = dot(viewVec, wavef) * fresnelScale+fresnelOffset;
+    
+    vec2 refdistort4 = wavef.xy*0.125;
+    refdistort4.y -= abs(refdistort4.y);
+    vec2 refvec4 = distort+refdistort4/dmod;
+    float dweight = min(dist2*blurMultiplier, 1.0);
+    vec4 baseCol = texture2D(refTex, refvec4);
+
+    refcol = mix(baseCol*df2, refcol, dweight);
+
+    //get specular component
+    float spec = clamp(dot(lightDir, (reflect(viewVec,wavef))),0.0,1.0);
+        
+    //harden specular
+    spec = pow(spec, 128.0);
+
+    //figure out distortion vector (ripply)   
+    vec2 distort2 = distort+wavef.xy*refScale * 0.33/max(dmod*df1, 1.0);
+        
+    vec4 fb = texture2D(screenTex, distort2);
+    
+    //mix with reflection
+    // Note we actually want to use just df1, but multiplying by 0.999999 gets around an nvidia compiler bug
     refcol.rgb = pow(refcol.rgb, vec3(0.45)); // boost the reflect color a little to get stars to show up SL-1475
-	color.rgb = mix(fb.rgb, refcol.rgb, df1 * 0.99999);
-	
-	vec4 pos = vary_position;
-	
-	color.rgb += spec * specular;
-	
-	color.rgb = atmosTransport(color.rgb);
-	color.rgb = scaleSoftClipFrag(color.rgb);
-	color.a   = spec * sunAngle2;
-
-	vec3 screenspacewavef = normalize((norm_mat*vec4(wavef, 1.0)).xyz);
-
+    color.rgb = mix(fb.rgb, refcol.rgb, df1 * 0.99999);
+    
+    vec4 pos = vary_position;
+    
+    color.rgb += spec * specular;
+    
+    color.rgb = atmosTransport(color.rgb);
+    color.rgb = scaleSoftClipFrag(color.rgb);
+    color.a   = spec * sunAngle2;
+
+    vec3 screenspacewavef = normalize((norm_mat*vec4(wavef, 1.0)).xyz);
+
+#if defined(WATER_EDGE)
     // force frag depth which doesn't z-fight
-    gl_FragDepth = 0.99999f;	
+    gl_FragDepth = 0.99999f;    
+#endif
 
-	frag_data[0] = vec4(color.rgb, color); // diffuse
-	frag_data[1] = vec4(0);		// speccolor, spec
-	frag_data[2] = vec4(encode_normal(screenspacewavef.xyz*0.5+0.5), 0.05, 0);// normalxy, 0, 0
+    frag_data[0] = vec4(color.rgb, color); // diffuse
+    frag_data[1] = vec4(0);     // speccolor, spec
+    frag_data[2] = vec4(encode_normal(screenspacewavef.xyz*0.5+0.5), 0.05, 0);// normalxy, 0, 0
 }