SH-1521 FIX -- Lighting and Shadows grayed out on mac

* Modified mac feature table to bring it up to date with latest renderer features including deferred rendering
* Changed mac AGL pixel format to no longer allow it to revert to software rendering when shader compilation errors occur.
* Fixed up various GLSL shader compilation warnings and errors that came up as a result of the above changes.
* Changed initial conditions for the "hardware skinning" checkbox on the preferences floater so it can be modified before login on machines that support avatar vertex programs.
* Removed unused avatarAlphaF.glsl files

Reviewed by davep

3 files changed, 58 insertions, 82 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaF.glsl
deleted file mode 100644
index 7d9d6cc0b2..0000000000
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaF.glsl
+++ /dev/null
@@ -1,70 +0,0 @@
-/** 
- * @file avatarAlphaF.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * $/LicenseInfo$
- */
-
-#version 120
-
-uniform sampler2D diffuseMap;
-uniform sampler2DShadow shadowMap0;
-uniform sampler2DShadow shadowMap1;
-uniform sampler2DShadow shadowMap2;
-uniform sampler2DShadow shadowMap3;
-uniform sampler2D noiseMap;
-
-uniform mat4 shadow_matrix[6];
-uniform vec4 shadow_clip;
-
-vec3 atmosLighting(vec3 light);
-vec3 scaleSoftClip(vec3 light);
-
-varying vec3 vary_ambient;
-varying vec3 vary_directional;
-varying vec4 vary_position;
-varying vec3 vary_normal;
-
-void main() 
-{
-	float shadow = 1.0;
-	vec4 pos = vary_position;
-	vec3 norm = normalize(vary_normal);
-	
-	vec3 nz = texture2D(noiseMap, gl_FragCoord.xy/128.0).xyz;
-
-	if (pos.z > -shadow_clip.w)
-	{	
-		
-		if (pos.z < -shadow_clip.z)
-		{
-			vec4 lpos = shadow_matrix[3]*pos;
-			shadow = shadow2DProj(shadowMap3, lpos).x;
-		}
-		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;
-		}
-	}
-	
-	
-	vec4 col = vec4(vary_ambient + vary_directional*shadow, gl_Color.a);	
-	vec4 color = texture2D(diffuseMap, gl_TexCoord[0].xy) * col;
-	
-	color.rgb = atmosLighting(color.rgb);
-
-	color.rgb = scaleSoftClip(color.rgb);
-
-	gl_FragColor = color;
-}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaV.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaV.glsl
index 5dfbb91393..a2a7dea20d 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaV.glsl
@@ -22,11 +22,36 @@ vec3 scaleUpLight(vec3 light);
 varying vec3 vary_position;
 varying vec3 vary_ambient;
 varying vec3 vary_directional;
-varying vec3 vary_normal;
 varying vec3 vary_fragcoord;
+varying vec3 vary_pointlight_col;
 
 uniform float near_clip;
 
+float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
+{
+	//get light vector
+	vec3 lv = lp.xyz-v;
+	
+	//get distance
+	float d = length(lv);
+	
+	//normalize light vector
+	lv *= 1.0/d;
+	
+	//distance attenuation
+	float dist2 = d*d/(la*la);
+	float da = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
+
+	// spotlight coefficient.
+	float spot = max(dot(-ln, lv), is_pointlight);
+	da *= spot*spot; // GL_SPOT_EXPONENT=2
+
+	//angular attenuation
+	da *= calcDirectionalLight(n, lv);
+
+	return da;	
+}
+
 void main()
 {
 	gl_TexCoord[0] = gl_MultiTexCoord0;
@@ -49,7 +74,6 @@ void main()
 	gl_Position = frag_pos;
 	
 	vary_position = pos.xyz;
-	vary_normal = norm;	
 	
 	calcAtmospherics(pos.xyz);
 
@@ -57,18 +81,20 @@ void main()
 
 	vec4 col = vec4(0.0, 0.0, 0.0, gl_Color.a);
 
-	// Collect normal lights (need to be divided by two, as we later multiply by 2)
-	col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[2].position, gl_LightSource[2].spotDirection.xyz, gl_LightSource[2].linearAttenuation, gl_LightSource[2].specular.a);
-	col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[3].position, gl_LightSource[3].spotDirection.xyz, gl_LightSource[3].linearAttenuation, gl_LightSource[3].specular.a);
-	col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[4].position, gl_LightSource[4].spotDirection.xyz, gl_LightSource[4].linearAttenuation, gl_LightSource[4].specular.a);
-	col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[5].position, gl_LightSource[5].spotDirection.xyz, gl_LightSource[5].linearAttenuation, gl_LightSource[5].specular.a);
-	col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[6].position, gl_LightSource[6].spotDirection.xyz, gl_LightSource[6].linearAttenuation, gl_LightSource[6].specular.a);
-	col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[7].position, gl_LightSource[7].spotDirection.xyz, gl_LightSource[7].linearAttenuation, gl_LightSource[7].specular.a);
-	col.rgb += gl_LightSource[1].diffuse.rgb*calcDirectionalLight(norm, gl_LightSource[1].position.xyz);
-	col.rgb = scaleDownLight(col.rgb);
+	// Collect normal lights
+	col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[2].position, gl_LightSource[2].spotDirection.xyz, gl_LightSource[2].linearAttenuation, gl_LightSource[2].quadraticAttenuation, gl_LightSource[2].specular.a);
+	col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[3].position, gl_LightSource[3].spotDirection.xyz, gl_LightSource[3].linearAttenuation, gl_LightSource[3].quadraticAttenuation ,gl_LightSource[3].specular.a);
+	col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[4].position, gl_LightSource[4].spotDirection.xyz, gl_LightSource[4].linearAttenuation, gl_LightSource[4].quadraticAttenuation, gl_LightSource[4].specular.a);
+	col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[5].position, gl_LightSource[5].spotDirection.xyz, gl_LightSource[5].linearAttenuation, gl_LightSource[5].quadraticAttenuation, gl_LightSource[5].specular.a);
+	col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[6].position, gl_LightSource[6].spotDirection.xyz, gl_LightSource[6].linearAttenuation, gl_LightSource[6].quadraticAttenuation, gl_LightSource[6].specular.a);
+	col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[7].position, gl_LightSource[7].spotDirection.xyz, gl_LightSource[7].linearAttenuation, gl_LightSource[7].quadraticAttenuation, gl_LightSource[7].specular.a);
 	
+	vary_pointlight_col = col.rgb*gl_Color.rgb;
+
+	col.rgb = vec3(0,0,0);
+
 	// Add windlight lights
-	col.rgb += atmosAmbient(vec3(0.));
+	col.rgb = atmosAmbient(vec3(0.));
 	
 	vary_ambient = col.rgb*gl_Color.rgb;
 	vary_directional = gl_Color.rgb*atmosAffectDirectionalLight(max(calcDirectionalLight(norm, gl_LightSource[0].position.xyz), (1.0-gl_Color.a)*(1.0-gl_Color.a)));
diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightV.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightV.glsl
new file mode 100644
index 0000000000..2e3e84dd15
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightV.glsl
@@ -0,0 +1,20 @@
+/** 
+ * @file multiPointLightV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+
+#version 120
+
+varying vec4 vary_fragcoord;
+
+void main()
+{
+	//transform vertex
+	vec4 pos = gl_ModelViewProjectionMatrix * gl_Vertex;
+	vary_fragcoord = pos;
+
+	gl_Position = pos;
+	gl_FrontColor = gl_Color;
+}