don't store gizmo material in LFS

materials/gizmo.mat

@@ -1,3 +1,50 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:634f5806365b20f05a3736b5b87c1ba6a49b94e39d3defbd6f22f9784d718388
-size 1754
+    material {
+        name : Gizmo,
+        parameters : [
+            {
+                type : mat4,
+                name : transform,
+                precision : high
+            },
+            {
+                type : float4,
+                name : color,
+                precision : low
+            }
+        ],
+        depthWrite : true,
+        depthCulling : false,
+        shadingModel : unlit,
+        blending: transparent,
+        variantFilter : [ skinning, shadowReceiver, vsm ],
+        culling: none,
+        instanced: false,
+        vertexDomain: object
+    }
+
+    vertex {
+        void materialVertex(inout MaterialVertexInputs material) {	
+
+            // we want to ensure the gizmo has the same size (in screen-space), no matter the distance from the camera
+            // we do this by scaling the model-space vertex positions by the distance from the camera
+            vec4 modelSpace = getPosition();
+            vec4 worldSpace = getWorldFromModelMatrix() * modelSpace;
+            vec4 viewSpace = getViewFromWorldMatrix() * worldSpace;           
+            float distanceFromCamera = length(viewSpace.xyz);
+            modelSpace.xyz *= (distanceFromCamera / 4.0f); // divide by 4 so that the size is equivalent to the camera being 4 world-space units away from the (unscaled) gizmo
+
+            worldSpace = getWorldFromModelMatrix() * modelSpace;
+            material.worldPosition = worldSpace;
+            //vec4 clipSpace = getClipFromWorldMatrix() * worldSpace;
+            //clipSpace.z = 0.99f;
+            //material.worldPosition = getWorldFromClipMatrix() * clipSpace;
+        }
+    }
+
+    fragment {
+        void material(inout MaterialInputs material) {
+            prepareMaterial(material);
+            material.baseColor = materialParams.color;
+        }
+    }
+

thermion_dart/native/include/material/gizmo.S

@@ -8,5 +8,5 @@ GIZMO_PACKAGE:
 GIZMO_GIZMO_OFFSET:
     .int 0
 GIZMO_GIZMO_SIZE:
-    .int 28800
+    .int 27809
 

thermion_dart/native/include/material/gizmo.apple.S

@@ -8,5 +8,5 @@ _GIZMO_PACKAGE:
 _GIZMO_GIZMO_OFFSET:
     .int 0
 _GIZMO_GIZMO_SIZE:
-    .int 28800
+    .int 27809