SH-2507 Shave some unused/redundant varying state and make the max texture index debug setting rebuild shaders to use no flow control when set to 1 or lower

13 files changed, 185 insertions, 66 deletions

diff --git a/indra/newview/app_settings/shaders/class2/avatar/eyeballV.glsl b/indra/newview/app_settings/shaders/class2/avatar/eyeballV.glsl
index 04d3e2aa1f..5af9f5c902 100644
--- a/indra/newview/app_settings/shaders/class2/avatar/eyeballV.glsl
+++ b/indra/newview/app_settings/shaders/class2/avatar/eyeballV.glsl
@@ -35,7 +35,7 @@ ATTRIBUTE vec2 texcoord0;
 
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
-VARYING float fog_depth;
+
 
 vec4 calcLightingSpecular(vec3 pos, vec3 norm, vec4 color, inout vec4 specularColor, vec4 baseCol);
 void calcAtmospherics(vec3 inPositionEye);
@@ -56,7 +56,7 @@ void main()
 	vec4 color = calcLightingSpecular(pos, norm, diffuse_color, specular, vec4(0.0));
 			
 	vertex_color = color;
-	fog_depth = pos.z;
+	
 
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaSkinnedV.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaSkinnedV.glsl
index ad353eb624..5a3955ef00 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaSkinnedV.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaSkinnedV.glsl
@@ -50,7 +50,7 @@ VARYING vec3 vary_pointlight_col;
 
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
-VARYING float fog_depth;
+
 
 uniform float near_clip;
 uniform float shadow_offset;
@@ -140,7 +140,7 @@ void main()
 	
 	vertex_color = col;
 
-	fog_depth = pos.z;
+	
 	
 	pos.xyz = (modelview_projection_matrix * vec4(position.xyz, 1.0)).xyz;
 	vary_fragcoord.xyz = pos.xyz + vec3(0,0,near_clip);
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
index 6a3777c7c8..9540ddd2e8 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
@@ -29,7 +29,7 @@ uniform mat4 modelview_matrix;
 uniform mat4 modelview_projection_matrix;
 
 ATTRIBUTE vec3 position;
-ATTRIBUTE float texture_index;
+void passTextureIndex();
 ATTRIBUTE vec3 normal;
 ATTRIBUTE vec4 diffuse_color;
 ATTRIBUTE vec2 texcoord0;
@@ -49,10 +49,10 @@ VARYING vec3 vary_directional;
 VARYING vec3 vary_fragcoord;
 VARYING vec3 vary_position;
 VARYING vec3 vary_pointlight_col;
-VARYING float vary_texture_index;
+
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
-VARYING float fog_depth;
+
 
 uniform float near_clip;
 uniform float shadow_offset;
@@ -97,7 +97,7 @@ void main()
 {
 	//transform vertex
 	vec4 vert = vec4(position.xyz, 1.0);
-	vary_texture_index = texture_index;
+	passTextureIndex();
 	vec4 pos = (modelview_matrix * vert);
 	gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
 	
@@ -136,7 +136,7 @@ void main()
 	
 	vertex_color = col;
 
-	fog_depth = pos.z;
+	
 	
 	pos = modelview_projection_matrix * vert;
 	vary_fragcoord.xyz = pos.xyz + vec3(0,0,near_clip);
diff --git a/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl b/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl
index 091a865160..63c7a6b13d 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl
@@ -48,7 +48,7 @@ VARYING vec3 vary_fragcoord;
 VARYING vec3 vary_pointlight_col;
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
-VARYING float fog_depth;
+
 
 uniform float near_clip;
 uniform float shadow_offset;
@@ -139,7 +139,7 @@ void main()
 	
 	vertex_color = col;
 
-	fog_depth = pos.z;
+	
 	vary_fragcoord.xyz = pos.xyz + vec3(0,0,near_clip);
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/objects/fullbrightShinyV.glsl b/indra/newview/app_settings/shaders/class2/objects/fullbrightShinyV.glsl
index 580ef2694f..34bd8d445a 100644
--- a/indra/newview/app_settings/shaders/class2/objects/fullbrightShinyV.glsl
+++ b/indra/newview/app_settings/shaders/class2/objects/fullbrightShinyV.glsl
@@ -34,10 +34,10 @@ void calcAtmospherics(vec3 inPositionEye);
 
 uniform vec4 origin;
 
-VARYING float vary_texture_index;
+
 
 ATTRIBUTE vec3 position;
-ATTRIBUTE float texture_index;
+void passTextureIndex();
 ATTRIBUTE vec3 normal;
 ATTRIBUTE vec4 diffuse_color;
 ATTRIBUTE vec2 texcoord0;
@@ -45,13 +45,13 @@ ATTRIBUTE vec2 texcoord0;
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
 VARYING vec3 vary_texcoord1;
-VARYING float fog_depth;
+
 
 void main()
 {
 	//transform vertex
 	vec4 vert = vec4(position.xyz,1.0);
-	vary_texture_index = texture_index;
+	passTextureIndex();
 	vec4 pos = (modelview_matrix * vert);
 	gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
 	
@@ -64,6 +64,4 @@ void main()
 	calcAtmospherics(pos.xyz);
 
 	vertex_color = diffuse_color;
-
-	fog_depth = pos.z;
 }
diff --git a/indra/newview/app_settings/shaders/class2/objects/fullbrightV.glsl b/indra/newview/app_settings/shaders/class2/objects/fullbrightV.glsl
index 09dbd0b6cd..fc20d3270e 100644
--- a/indra/newview/app_settings/shaders/class2/objects/fullbrightV.glsl
+++ b/indra/newview/app_settings/shaders/class2/objects/fullbrightV.glsl
@@ -28,7 +28,7 @@ uniform mat4 modelview_matrix;
 uniform mat4 modelview_projection_matrix;
  
 ATTRIBUTE vec3 position;
-ATTRIBUTE float texture_index;
+void passTextureIndex();
 ATTRIBUTE vec2 texcoord0;
 ATTRIBUTE vec3 normal;
 ATTRIBUTE vec4 diffuse_color;
@@ -36,16 +36,16 @@ ATTRIBUTE vec4 diffuse_color;
 
 void calcAtmospherics(vec3 inPositionEye);
 
-VARYING float vary_texture_index;
+
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
-VARYING float fog_depth;
+
 
 void main()
 {
 	//transform vertex
 	vec4 vert = vec4(position.xyz,1.0);
-	vary_texture_index = texture_index;
+	passTextureIndex();
 	vec4 pos = (modelview_matrix * vert);
 	gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
 	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
@@ -54,5 +54,5 @@ void main()
 
 	vertex_color = diffuse_color;
 
-	fog_depth = pos.z;
+	
 }
diff --git a/indra/newview/app_settings/shaders/class2/objects/shinyV.glsl b/indra/newview/app_settings/shaders/class2/objects/shinyV.glsl
index 86c592ea57..fdb3453cc5 100644
--- a/indra/newview/app_settings/shaders/class2/objects/shinyV.glsl
+++ b/indra/newview/app_settings/shaders/class2/objects/shinyV.glsl
@@ -30,7 +30,7 @@ uniform mat4 modelview_matrix;
 uniform mat4 modelview_projection_matrix;
 
 ATTRIBUTE vec3 position;
-ATTRIBUTE float texture_index;
+void passTextureIndex();
 ATTRIBUTE vec2 texcoord0;
 ATTRIBUTE vec3 normal;
 ATTRIBUTE vec4 diffuse_color;
@@ -43,16 +43,13 @@ vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec4 baseCol);
 
 void calcAtmospherics(vec3 inPositionEye);
 
-VARYING float vary_texture_index;
-VARYING float fog_depth;
-
 uniform vec4 origin;
 
 void main()
 {
 	//transform vertex
 	vec4 vert = vec4(position.xyz,1.0);
-	vary_texture_index = texture_index;
+	passTextureIndex();
 	vec4 pos = (modelview_matrix * vert);
 	gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
 		
@@ -64,7 +61,5 @@ void main()
 
 	calcAtmospherics(pos.xyz);
 
-	vertex_color = calcLighting(pos.xyz, norm, diffuse_color, vec4(0.0));
-
-	fog_depth = pos.z;
+	vertex_color = calcLighting(pos.xyz, norm, diffuse_color, vec4(0.0));	
 }
diff --git a/indra/newview/app_settings/shaders/class2/objects/simpleNonIndexedV.glsl b/indra/newview/app_settings/shaders/class2/objects/simpleNonIndexedV.glsl
index 6799e43b9a..cb80697d15 100644
--- a/indra/newview/app_settings/shaders/class2/objects/simpleNonIndexedV.glsl
+++ b/indra/newview/app_settings/shaders/class2/objects/simpleNonIndexedV.glsl
@@ -35,7 +35,7 @@ ATTRIBUTE vec4 diffuse_color;
 
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
-VARYING float fog_depth;
+
 
 vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec4 baseCol);
 void calcAtmospherics(vec3 inPositionEye);
@@ -57,5 +57,5 @@ void main()
 	vec4 color = calcLighting(pos.xyz, norm, diffuse_color, vec4(0.));
 	vertex_color = color;
 
-	fog_depth = pos.z;
+	
 }
diff --git a/indra/newview/app_settings/shaders/class2/objects/simpleV.glsl b/indra/newview/app_settings/shaders/class2/objects/simpleV.glsl
index 8e8f0664b0..37a20383e2 100644
--- a/indra/newview/app_settings/shaders/class2/objects/simpleV.glsl
+++ b/indra/newview/app_settings/shaders/class2/objects/simpleV.glsl
@@ -29,7 +29,7 @@ uniform mat4 modelview_matrix;
 uniform mat4 modelview_projection_matrix;
 
 ATTRIBUTE vec3 position;
-ATTRIBUTE float texture_index;
+void passTextureIndex();
 ATTRIBUTE vec2 texcoord0;
 ATTRIBUTE vec3 normal;
 ATTRIBUTE vec4 diffuse_color;
@@ -37,16 +37,16 @@ ATTRIBUTE vec4 diffuse_color;
 vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec4 baseCol);
 void calcAtmospherics(vec3 inPositionEye);
 
-VARYING float vary_texture_index;
+
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
-VARYING float fog_depth;
+
 
 void main()
 {
 	//transform vertex
 	vec4 vert = vec4(position.xyz,1.0);
-	vary_texture_index = texture_index;
+	passTextureIndex();
 	vec4 pos = (modelview_matrix * vert);
 	gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
 	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0, 0, 1)).xy;
@@ -60,5 +60,5 @@ void main()
 	vec4 color = calcLighting(pos.xyz, norm, diffuse_color, vec4(0.));
 	vertex_color = color;
 
-	fog_depth = pos.z;
+	
 }
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsF.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsF.glsl
index 08814b49d8..e8e56e12c1 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsF.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsF.glsl
@@ -24,25 +24,17 @@
  */
  
 
-
-VARYING vec3 vary_PositionEye;
-
 VARYING vec3 vary_SunlitColor;
-VARYING vec3 vary_AmblitColor;
 VARYING vec3 vary_AdditiveColor;
-VARYING vec3 vary_AtmosAttenuation;
+VARYING float vary_AtmosAttenuation;
 
-vec3 getPositionEye()
-{
-	return vary_PositionEye;
-}
 vec3 getSunlitColor()
 {
-	return vary_SunlitColor;
+	return vec3(0,0,0);
 }
 vec3 getAmblitColor()
 {
-	return vary_AmblitColor;
+	return vec3(0,0,0);
 }
 vec3 getAdditiveColor()
 {
@@ -50,5 +42,5 @@ vec3 getAdditiveColor()
 }
 vec3 getAtmosAttenuation()
 {
-	return vary_AtmosAttenuation;
+	return vec3(vary_AtmosAttenuation);
 }
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsV.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsV.glsl
index 514f009add..01605e5b25 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsV.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsV.glsl
@@ -24,49 +24,50 @@
  */
  
 
-
-VARYING vec3 vary_PositionEye;
-
-VARYING vec3 vary_SunlitColor;
-VARYING vec3 vary_AmblitColor;
 VARYING vec3 vary_AdditiveColor;
-VARYING vec3 vary_AtmosAttenuation;
+VARYING float vary_AtmosAttenuation;
+
+vec3 atmos_attenuation;
+vec3 sunlit_color;
+vec3 amblit_color;
+vec3 position_eye;
 
-vec3 getPositionEye()
-{
-	return vary_PositionEye;
-}
 vec3 getSunlitColor()
 {
-	return vary_SunlitColor;
+	return sunlit_color;
 }
 vec3 getAmblitColor()
 {
-	return vary_AmblitColor;
+	return amblit_color;
 }
+
 vec3 getAdditiveColor()
 {
 	return vary_AdditiveColor;
 }
 vec3 getAtmosAttenuation()
 {
-	return vary_AtmosAttenuation;
+	return atmos_attenuation;
 }
 
+vec3 getPositionEye()
+{
+	return position_eye;
+}
 
 void setPositionEye(vec3 v)
 {
-	vary_PositionEye = v;
+	position_eye = v;
 }
 
 void setSunlitColor(vec3 v)
 {
-	vary_SunlitColor = v;
+	sunlit_color  = v;
 }
 
 void setAmblitColor(vec3 v)
 {
-	vary_AmblitColor = v;
+	amblit_color = v;
 }
 
 void setAdditiveColor(vec3 v)
@@ -76,5 +77,6 @@ void setAdditiveColor(vec3 v)
 
 void setAtmosAttenuation(vec3 v)
 {
-	vary_AtmosAttenuation = v;
+	atmos_attenuation = v;
+	vary_AtmosAttenuation = v.r;
 }
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsWaterF.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsWaterF.glsl
new file mode 100644
index 0000000000..23046f990d
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsWaterF.glsl
@@ -0,0 +1,51 @@
+/** 
+ * @file atmosphericVarsWaterF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+ 
+VARYING vec3 vary_PositionEye;
+VARYING vec3 vary_SunlitColor;
+VARYING vec3 vary_AdditiveColor;
+VARYING float vary_AtmosAttenuation;
+
+vec3 getSunlitColor()
+{
+	return vec3(0,0,0);
+}
+vec3 getAmblitColor()
+{
+	return vec3(0,0,0);
+}
+vec3 getAdditiveColor()
+{
+	return vary_AdditiveColor;
+}
+vec3 getAtmosAttenuation()
+{
+	return vec3(vary_AtmosAttenuation);
+}
+vec3 getPositionEye()
+{
+	return vary_PositionEye;
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsWaterV.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsWaterV.glsl
new file mode 100644
index 0000000000..279c4dd981
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsVarsWaterV.glsl
@@ -0,0 +1,81 @@
+/** 
+ * @file atmosphericVarsWaterV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+ 
+VARYING vec3 vary_PositionEye;
+VARYING vec3 vary_AdditiveColor;
+VARYING float vary_AtmosAttenuation;
+
+vec3 atmos_attenuation;
+vec3 sunlit_color;
+vec3 amblit_color;
+
+vec3 getSunlitColor()
+{
+	return sunlit_color;
+}
+vec3 getAmblitColor()
+{
+	return amblit_color;
+}
+
+vec3 getAdditiveColor()
+{
+	return vary_AdditiveColor;
+}
+vec3 getAtmosAttenuation()
+{
+	return atmos_attenuation;
+}
+
+vec3 getPositionEye()
+{
+	return vary_PositionEye;
+}
+
+void setPositionEye(vec3 v)
+{
+	vary_PositionEye = v;
+}
+
+void setSunlitColor(vec3 v)
+{
+	sunlit_color  = v;
+}
+
+void setAmblitColor(vec3 v)
+{
+	amblit_color = v;
+}
+
+void setAdditiveColor(vec3 v)
+{
+	vary_AdditiveColor = v;
+}
+
+void setAtmosAttenuation(vec3 v)
+{
+	atmos_attenuation = v;
+	vary_AtmosAttenuation = v.r;
+}