MAINT-3107 speculative changes to try to ameliorate rigged crasher on Intel HD with crappy default driver

2 files changed, 14 insertions, 9 deletions

diff --git a/indra/newview/app_settings/shaders/class1/avatar/avatarSkinV.glsl b/indra/newview/app_settings/shaders/class1/avatar/avatarSkinV.glsl
index bc63d07d72..3df4d333ce 100755
--- a/indra/newview/app_settings/shaders/class1/avatar/avatarSkinV.glsl
+++ b/indra/newview/app_settings/shaders/class1/avatar/avatarSkinV.glsl
@@ -31,10 +31,12 @@ uniform vec4 matrixPalette[45];
 mat4 getSkinnedTransform()
 {
 	mat4 ret;
-	int i = int(floor(weight.x));
+	
 	float x = fract(weight.x);
-		
-	ret[0] = mix(matrixPalette[i+0], matrixPalette[i+1], x);
+	int i = int(floor(weight.x));
+		i = min(i, 15);
+		i = max(i, 0);
+	ret[0] = mix(matrixPalette[i+0], matrixPalette[i+1],  x);
 	ret[1] = mix(matrixPalette[i+15],matrixPalette[i+16], x);
 	ret[2] = mix(matrixPalette[i+30],matrixPalette[i+31], x);
 	ret[3] = vec4(0,0,0,1);
diff --git a/indra/newview/app_settings/shaders/class1/avatar/objectSkinV.glsl b/indra/newview/app_settings/shaders/class1/avatar/objectSkinV.glsl
index efd0d03965..12996cf0d6 100755
--- a/indra/newview/app_settings/shaders/class1/avatar/objectSkinV.glsl
+++ b/indra/newview/app_settings/shaders/class1/avatar/objectSkinV.glsl
@@ -34,14 +34,17 @@ mat4 getObjectSkinnedTransform()
 	
 	vec4 w = fract(weight4);
 	vec4 index = floor(weight4);
-	
+
+		 index = min(index, vec4(31.0));
+		 index = max(index, vec4( 0.0));
+
 	float scale = 1.0/(w.x+w.y+w.z+w.w);
 	w *= scale;
-	
-	mat4 mat = matrixPalette[int(index.x)]*w.x;
-	mat += matrixPalette[int(index.y)]*w.y;
-	mat += matrixPalette[int(index.z)]*w.z;
-	mat += matrixPalette[int(index.w)]*w.w;
+
+	mat4 mat  = matrixPalette[int(index.x)]*w.x;
+		 mat += matrixPalette[int(index.y)]*w.y;
+		 mat += matrixPalette[int(index.z)]*w.z;
+		 mat += matrixPalette[int(index.w)]*w.w;
 		
 	return mat;
 }