Shader builder fix for essl

Sources/arm/node/MakeBrush.hx

@@ -14,7 +14,7 @@ class MakeBrush {
 		if (Context.tool == ToolParticle) return;
 
 		var decal = Context.tool == ToolDecal || Context.tool == ToolText;
-		if (decal) frag.write('if (decalMaskLocal.z > 0) {');
+		if (decal) frag.write('if (decalMaskLocal.z > 0.0) {');
 
 		if (Config.raw.brush_3d) {
 			frag.write('vec4 inpLocal = inp;'); // TODO: spirv workaround

Sources/arm/node/MakeMeshPreview.hx

@@ -58,7 +58,7 @@ class MakeMeshPreview {
 
 		var brushScale = (Context.brushScale * Context.brushNodesScale) + "";
 		vert.add_out('vec2 texCoord');
-		vert.write_attrib('texCoord = tex * ${brushScale};');
+		vert.write_attrib('texCoord = tex * float(${brushScale});');
 
 		if (MakeMaterial.heightUsed) {
 			frag.bposition = true;