diff --git a/Sources/arm/node/MakeMesh.hx b/Sources/arm/node/MakeMesh.hx
index 18655b5d..0386e18e 100644
--- a/Sources/arm/node/MakeMesh.hx
+++ b/Sources/arm/node/MakeMesh.hx
@@ -422,7 +422,8 @@ class MakeMesh {
 			}
 			else if (Context.viewportMode == ViewMaterialID) {
 				frag.add_shared_sampler('sampler2D texpaint_nor' + Context.layer.id);
-				frag.write('float sample_matid = textureLodShared(texpaint_nor' + Context.layer.id + ', texCoord, 0.0).a + 1.0 / 255.0;');
+				frag.add_uniform('vec2 texpaintSize', '_texpaintSize');
+				frag.write('float sample_matid = texelFetch(texpaint_nor' + Context.layer.id + ', ivec2(texCoord * texpaintSize), 0).a + 1.0 / 255.0;');
 				frag.write('float matid_r = fract(sin(dot(vec2(sample_matid, sample_matid * 20.0), vec2(12.9898, 78.233))) * 43758.5453);');
 				frag.write('float matid_g = fract(sin(dot(vec2(sample_matid * 20.0, sample_matid), vec2(12.9898, 78.233))) * 43758.5453);');
 				frag.write('float matid_b = fract(sin(dot(vec2(sample_matid, sample_matid * 40.0), vec2(12.9898, 78.233))) * 43758.5453);');