The texture sampler should operate linearly

TODO.txt

@@ -3,6 +3,7 @@ TODO:
 WebGPU
   First decent rainRender
     vertex, fragment, with noise for
+    data texture lookup with textureLoad
   std140
     Document and share it
 

js/webgpu_main.js

@@ -68,7 +68,11 @@ export default async (canvas, config) => {
 		],
 	};
 
-	const sampler = device.createSampler();
+	const msdfSampler = device.createSampler({
+		magFilter: "linear",
+		minFilter: "linear",
+	});
+
 	const msdfTexture = await loadTexture(device, config.glyphTexURL);
 
 	const configStructLayout = std140(["i32", "i32", "f32"]);
@@ -176,7 +180,7 @@ export default async (canvas, config) => {
 			},
 			{
 				binding: 2,
-				resource: sampler,
+				resource: msdfSampler,
 			},
 			{
 				binding: 3,

webgpu_notes.txt

@@ -42,4 +42,8 @@ Bind groups let you bind a bunch of resources at once
 Render bundles let you reissue commands
 
 You can only use up to FOUR bind groups on your laptop's device!
-Here's an annoying gotcha: uniform buffers are like classic UBOs, and have esoteric ("std140") layout requirements!
+Here's an annoying gotcha: uniform buffers are like classic UBOs, and have esoteric ("std140") layout requirements!
+
+Texture lookup in vertex shader
+	You can only sample textures in fragment stages
+	But you can use textureLoad anywhere to get a specific texel, no sampler needed