add optional shading normal for thickened face

ShenyaoKe · ShenyaoKe · commit cac2c987933c · 2017-04-02T16:50:08.000-07:00
diff --git a/shaders/face_gs.glsl b/shaders/face_gs.glsl
@@ -44,6 +44,8 @@ void EmitSide(vec4 p0, vec4 p1, vec4 n0, vec4 n1)
 
 void EmitBottom(vec4 p0, vec4 p1, vec4 p2)
 {
+	// If prefer backside as normal color, remove the comment here.
+	//normal = -normal;
 	pos = p0.xyz - vNorm[0].xyz * thickness;
 	gl_Position = proj_matrix * vec4(pos, 1.0f);
 	EmitVertex();

Original file line number	Diff line number	Diff line change
`@@ -44,6 +44,8 @@ void EmitSide(vec4 p0, vec4 p1, vec4 n0, vec4 n1)`
`44`	`44`
`45`	`45`	`void EmitBottom(vec4 p0, vec4 p1, vec4 p2)`
`46`	`46`	`{`
	`47`	`+ // If prefer backside as normal color, remove the comment here.`
	`48`	`+ //normal = -normal;`
`47`	`49`	`pos = p0.xyz - vNorm[0].xyz * thickness;`
`48`	`50`	`gl_Position = proj_matrix * vec4(pos, 1.0f);`
`49`	`51`	`EmitVertex();`