Display territory skins again (#3966)

## Description:

Display territory skins (patterns) again.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

tryout33

src/client/render/gl/GameView.ts

@@ -217,8 +217,13 @@ export class GameView {
   updatePalette(paletteData: Float32Array): void {
     this.renderer.updatePalette(paletteData);
   }
-  addPlayers(players: PlayerStatic[], paletteData: Float32Array): void {
-    this.renderer.addPlayers(players, paletteData);
+  addPlayers(
+    players: PlayerStatic[],
+    paletteData: Float32Array,
+    patternMeta: Float32Array,
+    patternData: Uint8Array,
+  ): void {
+    this.renderer.addPlayers(players, paletteData, patternMeta, patternData);
   }
   uploadRailroadState(data: Uint8Array): void {
     this.renderer.uploadRailroadState(data);
@@ -328,6 +333,9 @@ export class GameView {
   setAltView(active: boolean): void {
     this.renderer.setAltView(active);
   }
+  setShowPatterns(active: boolean): void {
+    this.renderer.setShowPatterns(active);
+  }
   setHighlightOwner(ownerID: number): void {
     this.renderer.setHighlightOwner(ownerID);
   }

src/client/render/gl/RenderSettings.ts

@@ -4,6 +4,7 @@ export interface RenderSettings {
   passEnabled: {
     terrain: boolean;
     mapOverlay: boolean;
+    territoryPatterns: boolean;
     structure: boolean;
     unit: boolean;
     name: boolean;

src/client/render/gl/Renderer.ts

@@ -127,6 +127,8 @@ export class GPURenderer {
 
   private paletteTex: WebGLTexture;
   private paletteData: Float32Array;
+  private patternMetaTex: WebGLTexture;
+  private patternDataTex: WebGLTexture;
   private canvas: HTMLCanvasElement;
   private settings: RenderSettings;
   private sceneTarget: RenderTarget;
@@ -219,6 +221,26 @@ export class GPURenderer {
       filter: gl.NEAREST,
     });
 
+    this.patternMetaTex = createTexture2D(gl, {
+      width: palW,
+      height: 1,
+      internalFormat: gl.RGBA32F,
+      format: gl.RGBA,
+      type: gl.FLOAT,
+      data: new Float32Array(palW * 4),
+      filter: gl.NEAREST,
+    });
+
+    this.patternDataTex = createTexture2D(gl, {
+      width: 1024,
+      height: palW,
+      internalFormat: gl.R8UI,
+      format: gl.RED_INTEGER,
+      type: gl.UNSIGNED_BYTE,
+      data: new Uint8Array(palW * 1024),
+      filter: gl.NEAREST,
+    });
+
     // --- Border compute (creates its own borderTex) ---
     // Need a temporary tileTex reference for border compute — we'll create
     // GPUResources first, then wire everything.
@@ -259,7 +281,7 @@ export class GPURenderer {
       this.settings,
     );
 
-    // --- Territory (needs tileTex, trailTex, paletteTex) ---
+    // --- Territory (needs tileTex, trailTex, paletteTex, patternTexs) ---
     this.territoryPass = new TerritoryPass(
       gl,
       mapW,
@@ -267,6 +289,8 @@ export class GPURenderer {
       this.res.tileTex,
       this.res.trailTex,
       this.paletteTex,
+      this.patternMetaTex,
+      this.patternDataTex,
       this.settings,
     );
 
@@ -582,8 +606,43 @@ export class GPURenderer {
   }
 
   /** Register late-arriving players (updates palette + NamePass lookup maps). */
-  addPlayers(players: PlayerStatic[], paletteData: Float32Array): void {
+  addPlayers(
+    players: PlayerStatic[],
+    paletteData: Float32Array,
+    patternMeta: Float32Array,
+    patternData: Uint8Array,
+  ): void {
     this.updatePalette(paletteData);
+
+    const gl = this.gl;
+    const palW = getPaletteSize();
+
+    gl.bindTexture(gl.TEXTURE_2D, this.patternMetaTex);
+    gl.texSubImage2D(
+      gl.TEXTURE_2D,
+      0,
+      0,
+      0,
+      palW,
+      1,
+      gl.RGBA,
+      gl.FLOAT,
+      patternMeta,
+    );
+
+    gl.bindTexture(gl.TEXTURE_2D, this.patternDataTex);
+    gl.texSubImage2D(
+      gl.TEXTURE_2D,
+      0,
+      0,
+      0,
+      1024,
+      palW,
+      gl.RED_INTEGER,
+      gl.UNSIGNED_BYTE,
+      patternData,
+    );
+
     this.namePass.addPlayers(players, this.paletteData);
     for (const p of players) {
       if (p.team !== null) this.playerTeams.set(p.smallID, p.team);
@@ -838,6 +897,10 @@ export class GPURenderer {
     this.trailPass.setAltView(active);
   }
 
+  setShowPatterns(active: boolean): void {
+    this.territoryPass.setShowPatterns(active);
+  }
+
   setGridView(active: boolean): void {
     this.gridView = active;
   }
@@ -1147,6 +1210,8 @@ export class GPURenderer {
     this.barPass.dispose();
     disposeGPUResources(this.gl, this.res);
     this.gl.deleteTexture(this.paletteTex);
+    this.gl.deleteTexture(this.patternMetaTex);
+    this.gl.deleteTexture(this.patternDataTex);
     this.gl.deleteFramebuffer(this.sceneTarget.fbo);
     this.gl.deleteTexture(this.sceneTarget.tex);
     this.lastUnits = new Map();

src/client/render/gl/passes/TerritoryPass.ts

@@ -36,14 +36,18 @@ export class TerritoryPass {
   private uCharcoalAlpha: WebGLUniformLocation;
   private uHighlightOwner: WebGLUniformLocation;
   private uHighlightBrighten: WebGLUniformLocation;
+  private uShowPatterns: WebGLUniformLocation;
   private highlightOwner = 0;
 
   private vao: WebGLVertexArrayObject;
   private tileTex: WebGLTexture;
   private trailTex: WebGLTexture;
   private paletteTex: WebGLTexture;
+  private patternMetaTex: WebGLTexture;
+  private patternDataTex: WebGLTexture;
 
   private altView = false;
+  private showPatterns = true;
 
   /** CPU-side tile state (deltas written here, flushed to GPU before draw). */
   private cpuTileState: Uint16Array;
@@ -72,6 +76,8 @@ export class TerritoryPass {
     tileTex: WebGLTexture,
     trailTex: WebGLTexture,
     paletteTex: WebGLTexture,
+    patternMetaTex: WebGLTexture,
+    patternDataTex: WebGLTexture,
     settings: RenderSettings,
   ) {
     this.gl = gl;
@@ -81,6 +87,8 @@ export class TerritoryPass {
     this.tileTex = tileTex;
     this.trailTex = trailTex;
     this.paletteTex = paletteTex;
+    this.patternMetaTex = patternMetaTex;
+    this.patternDataTex = patternDataTex;
     this.cpuTileState = new Uint16Array(mapW * mapH);
     this.cpuTrailState = new Uint8Array(mapW * mapH);
 
@@ -112,10 +120,13 @@ export class TerritoryPass {
       this.program,
       "uHighlightBrighten",
     )!;
+    this.uShowPatterns = gl.getUniformLocation(this.program, "uShowPatterns")!;
 
     gl.useProgram(this.program);
     gl.uniform1i(gl.getUniformLocation(this.program, "uTileTex"), 0);
     gl.uniform1i(gl.getUniformLocation(this.program, "uPalette"), 1);
+    gl.uniform1i(gl.getUniformLocation(this.program, "uPatternMeta"), 2);
+    gl.uniform1i(gl.getUniformLocation(this.program, "uPatternData"), 3);
 
     this.vao = createMapQuad(gl, mapW, mapH);
   }
@@ -330,6 +341,10 @@ export class TerritoryPass {
     this.altView = active;
   }
 
+  setShowPatterns(show: boolean): void {
+    this.showPatterns = show;
+  }
+
   /** Set the hovered player's smallID for territory-fill brightening (0 = off). */
   setHighlightOwner(ownerID: number): void {
     this.highlightOwner = ownerID;
@@ -352,11 +367,19 @@ export class TerritoryPass {
     gl.uniform1f(this.uCharcoalAlpha, mo.charcoalAlpha);
     gl.uniform1ui(this.uHighlightOwner, this.highlightOwner);
     gl.uniform1f(this.uHighlightBrighten, mo.highlightFillBrighten);
+    gl.uniform1i(
+      this.uShowPatterns,
+      this.settings.passEnabled.territoryPatterns && this.showPatterns ? 1 : 0,
+    );
 
     gl.activeTexture(gl.TEXTURE0);
     gl.bindTexture(gl.TEXTURE_2D, this.tileTex);
     gl.activeTexture(gl.TEXTURE1);
     gl.bindTexture(gl.TEXTURE_2D, this.paletteTex);
+    gl.activeTexture(gl.TEXTURE2);
+    gl.bindTexture(gl.TEXTURE_2D, this.patternMetaTex);
+    gl.activeTexture(gl.TEXTURE3);
+    gl.bindTexture(gl.TEXTURE_2D, this.patternDataTex);
 
     gl.bindVertexArray(this.vao);
     gl.drawArrays(gl.TRIANGLES, 0, 6);
@@ -366,6 +389,6 @@ export class TerritoryPass {
     const gl = this.gl;
     gl.deleteProgram(this.program);
     gl.deleteVertexArray(this.vao);
-    // tileTex, trailTex, paletteTex owned by GPUResources / renderer
+    // tileTex, trailTex, paletteTex, patternMetaTex, patternDataTex owned by GPUResources / renderer
   }
 }

src/client/render/gl/render-settings.json

@@ -2,6 +2,7 @@
   "passEnabled": {
     "terrain": true,
     "mapOverlay": true,
+    "territoryPatterns": true,
     "structure": true,
     "unit": true,
     "name": true,

src/client/render/gl/shaders/map-overlay/territory.frag.glsl

@@ -4,6 +4,9 @@ precision highp usampler2D;
 
 uniform usampler2D uTileTex;      // R16UI — tile state per cell
 uniform sampler2D  uPalette;      // RGBA32F — player colors
+uniform sampler2D  uPatternMeta;  // RGBA32F — 1D buffer, 1 px per owner. R=hasPattern, G=width, B=height, A=scale
+uniform usampler2D uPatternData;  // R8UI    — 2D buffer, row per owner, bytes for bitmask
+uniform int uShowPatterns;
 
 uniform vec2 uMapSize;
 uniform int uAltView;
@@ -42,6 +45,29 @@ void main() {
   float u = (float(owner) + 0.5) / float(PALETTE_SIZE);
   vec4 color = texture(uPalette, vec2(u, 0.25));
 
+  if (uShowPatterns == 1) {
+    vec4 meta = texelFetch(uPatternMeta, ivec2(int(owner), 0), 0);
+    if (meta.r > 0.0) {
+      int pWidth = int(meta.g);
+      int pHeight = int(meta.b);
+      int pScale = int(meta.a);
+      
+      int px = tc.x >> pScale;
+      int py = tc.y >> pScale;
+      int mx = ((px % pWidth) + pWidth) % pWidth;
+      int my = ((py % pHeight) + pHeight) % pHeight;
+      int bitIndex = my * pWidth + mx;
+      int byteIndex = bitIndex >> 3;
+      
+      uint patternByte = texelFetch(uPatternData, ivec2(byteIndex, int(owner)), 0).r;
+      bool isPrimary = (patternByte & (1u << uint(bitIndex & 7))) == 0u;
+      
+      if (!isPrimary) {
+        color = texture(uPalette, vec2(u, 0.75));
+      }
+    }
+  }
+
   // Hover highlight: brighten every tile owned by the hovered player.
   if (uHighlightOwner != 0u && owner == uHighlightOwner) {
     color.rgb = mix(color.rgb, vec3(1.0), uHighlightBrighten);