Add new shaders for generating shadows from clouds.

Add new class3 shadow shaders for VSM shadows.

Add disabled shadow pass in WLSky for using above.

1 files changed, 95 insertions, 0 deletions

diff --git a/indra/newview/app_settings/shaders/class3/deferred/waterV.glsl b/indra/newview/app_settings/shaders/class3/deferred/waterV.glsl
new file mode 100644
index 0000000000..02000d90ca
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class3/deferred/waterV.glsl
@@ -0,0 +1,95 @@
+/** 
+ * @file waterV.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
+ * $/LicenseInfo$
+ */
+
+uniform mat4 modelview_matrix;
+uniform mat4 modelview_projection_matrix;
+
+ATTRIBUTE vec3 position;
+
+
+uniform vec2 d1;
+uniform vec2 d2;
+uniform float time;
+uniform vec3 eyeVec;
+uniform float waterHeight;
+
+VARYING vec4 refCoord;
+VARYING vec4 littleWave;
+VARYING vec4 view;
+
+VARYING vec4 vary_position;
+
+float wave(vec2 v, float t, float f, vec2 d, float s) 
+{
+   return (dot(d, v)*f + t*s)*f;
+}
+
+void main()
+{
+	//transform vertex
+	vec4 pos = vec4(position.xyz, 1.0);
+	mat4 modelViewProj = modelview_projection_matrix;
+	
+	vec4 oPosition;
+		    
+	//get view vector
+	vec3 oEyeVec;
+	oEyeVec.xyz = pos.xyz-eyeVec;
+		
+	float d = length(oEyeVec.xy);
+	float ld = min(d, 2560.0);
+	
+	pos.xy = eyeVec.xy + oEyeVec.xy/d*ld;
+	view.xyz = oEyeVec;
+		
+	d = clamp(ld/1536.0-0.5, 0.0, 1.0);	
+	d *= d;
+		
+	oPosition = vec4(position, 1.0);
+	oPosition.z = mix(oPosition.z, max(eyeVec.z*0.75, 0.0), d);
+	vary_position = modelview_matrix * oPosition;
+	oPosition = modelViewProj * oPosition;
+	
+	refCoord.xyz = oPosition.xyz + vec3(0,0,0.2);
+	
+	//get wave position parameter (create sweeping horizontal waves)
+	vec3 v = pos.xyz;
+	v.x += (cos(v.x*0.08/*+time*0.01*/)+sin(v.y*0.02))*6.0;
+	    
+	//push position for further horizon effect.
+	pos.xyz = oEyeVec.xyz*(waterHeight/oEyeVec.z);
+	pos.w = 1.0;
+	pos = modelview_matrix*pos;
+	
+	//pass wave parameters to pixel shader
+	vec2 bigWave =  (v.xy) * vec2(0.04,0.04)  + d1 * time * 0.055;
+	//get two normal map (detail map) texture coordinates
+	littleWave.xy = (v.xy) * vec2(0.45, 0.9)   + d2 * time * 0.13;
+	littleWave.zw = (v.xy) * vec2(0.1, 0.2) + d1 * time * 0.1;
+	view.w = bigWave.y;
+	refCoord.w = bigWave.x;
+	
+	gl_Position = oPosition;
+}