1 files changed, 19 insertions, 3 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskV.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskV.glsl
index 7d3b06c56e..11411a605c 100644..100755
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskV.glsl
@@ -25,12 +25,19 @@
 
 uniform mat4 texture_matrix0;
 uniform mat4 modelview_projection_matrix;
+uniform float shadow_target_width;
 
 ATTRIBUTE vec3 position;
 ATTRIBUTE vec4 diffuse_color;
 ATTRIBUTE vec2 texcoord0;
 
-VARYING vec4 post_pos;
+#if !DEPTH_CLAMP
+VARYING float pos_zd2;
+#endif
+
+VARYING float pos_w;
+
+VARYING float target_pos_x;
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
 
@@ -39,10 +46,19 @@ void passTextureIndex();
 void main()
 {
 	//transform vertex
-	vec4 pos = modelview_projection_matrix*vec4(position.xyz, 1.0);
-	post_pos = pos;
+	vec4 pre_pos = vec4(position.xyz, 1.0);
+	vec4 pos = modelview_projection_matrix * pre_pos;
+	target_pos_x = 0.5 * (shadow_target_width - 1.0) * pos.x;
+
+	pos_w = pos.w;
+
+#if !DEPTH_CLAMP
+	pos_zd2 = pos.z * 0.5;
 	
 	gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
+#else
+	gl_Position = pos;
+#endif
 	
 	passTextureIndex();