Fix raster-color interpolation when using nearest raster-resampling

GitOrigin-RevId: 69575575185f8e9aede7cecd2c73821a8b001f1d

Author: ibesora

src/render/draw_raster.ts

@@ -525,7 +525,7 @@ function configureRaster(
 
         let tex = layer.colorRampTexture;
         if (!tex) tex = layer.colorRampTexture = new Texture(context, layer.colorRamp, gl.RGBA8);
-        tex.bind(gl.LINEAR, gl.CLAMP_TO_EDGE);
+        tex.bind(resampling, gl.CLAMP_TO_EDGE);
     }
 
     if (mrt) {

test/integration/render-tests/raster-color/nearest/expected.png

@@ -0,0 +1,47 @@
+{
+  "version": 8,
+  "metadata": {
+    "test": {
+      "height": 256
+    }
+  },
+  "center": [
+    13.418056,
+    52.499167
+  ],
+  "zoom": 16,
+  "sources": {
+    "satellite": {
+      "type": "raster",
+      "tiles": [
+        "local://tiles/{z}-{x}-{y}.satellite.png"
+      ],
+      "maxzoom": 17,
+      "tileSize": 256
+    }
+  },
+  "layers": [
+    {
+      "id": "raster",
+      "type": "raster",
+      "source": "satellite",
+      "paint": {
+        "raster-fade-duration": 0,
+        "raster-color": [
+            "step",
+            ["raster-value"],
+            "rgba(0, 0, 0, 1.0)",
+            0.125,  "rgba(242, 242, 255, 0.9)",
+            0.25,  "rgba(160, 210, 255, 0.9)",
+            0.375,  "rgba(33, 140, 255, 0.9)",
+            0.5,  "rgba(0, 65, 255, 0.9)",
+            0.625, "rgba(250, 245, 0, 0.9)",
+            0.75, "rgba(255, 153, 0, 0.9)",
+            0.875, "rgba(255, 40, 0, 0.9)",
+            1, "rgba(180, 0, 104, 0.9)"
+        ],
+        "raster-resampling": "nearest"
+      }
+    }
+  ]
+}