Add test asset support with STRIP_ALL guards

Fixes test_assets.cc compilation by adding missing test asset IDs and
procedural generators. Test-specific code is protected with DEMO_STRIP_ALL
to exclude from release builds.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

8 files changed, 40 insertions, 0 deletions

diff --git a/src/procedural/generator.cc b/src/procedural/generator.cc
index 18ad133..7c165db 100644
--- a/src/procedural/generator.cc
+++ b/src/procedural/generator.cc
@@ -191,4 +191,18 @@ bool make_periodic(uint8_t* buffer, int w, int h, const float* params,
   return true;
 }
 
+#if !defined(DEMO_STRIP_ALL)
+// Test-only: 256x256 noise generator
+bool gen_noise_256(uint8_t* buffer, int w, int h, const float* params,
+                   int num_params) {
+  return gen_noise(buffer, w, h, params, num_params);
+}
+
+// Test-only: Failing generator
+bool gen_fail(uint8_t* buffer, int w, int h, const float* params,
+              int num_params) {
+  return false;
+}
+#endif
+
 } // namespace procedural
diff --git a/src/procedural/generator.h b/src/procedural/generator.h
index e57ef61..96d7651 100644
--- a/src/procedural/generator.h
+++ b/src/procedural/generator.h
@@ -38,4 +38,14 @@ bool gen_grid(uint8_t* buffer, int w, int h, const float* params,
 bool make_periodic(uint8_t* buffer, int w, int h, const float* params,
                    int num_params);
 
+#if !defined(DEMO_STRIP_ALL)
+// Test-only: 256x256 noise generator
+bool gen_noise_256(uint8_t* buffer, int w, int h, const float* params,
+                   int num_params);
+
+// Test-only: Failing generator
+bool gen_fail(uint8_t* buffer, int w, int h, const float* params,
+              int num_params);
+#endif
+
 } // namespace procedural
diff --git a/src/util/asset_manager.cc b/src/util/asset_manager.cc
index 5067ebe..274f0f9 100644
--- a/src/util/asset_manager.cc
+++ b/src/util/asset_manager.cc
@@ -28,6 +28,10 @@ static const ProcGenEntry kAssetManagerProcGenFuncs[] = {
     {"gen_perlin", procedural::gen_perlin},
     {"gen_grid", procedural::gen_grid},
     {"make_periodic", procedural::make_periodic},
+#if !defined(DEMO_STRIP_ALL)
+    {"gen_noise_256", procedural::gen_noise_256},
+    {"gen_fail", procedural::gen_fail},
+#endif
 };
 static const size_t kNumProcGenFuncs =
     sizeof(kAssetManagerProcGenFuncs) / sizeof(kAssetManagerProcGenFuncs[0]);
diff --git a/tools/asset_packer.cc b/tools/asset_packer.cc
index e7f678b..af89a88 100644
--- a/tools/asset_packer.cc
+++ b/tools/asset_packer.cc
@@ -31,6 +31,10 @@ static const std::map<std::string, ProcGenFunc> kAssetPackerProcGenFuncMap = {
     {"gen_noise", procedural::gen_noise},
     {"gen_grid", procedural::gen_grid},
     {"make_periodic", procedural::make_periodic},
+#if !defined(DEMO_STRIP_ALL)
+    {"gen_noise_256", procedural::gen_noise_256},
+    {"gen_fail", procedural::gen_fail},
+#endif
 };
 
 static bool HasImageExtension(const std::string& filename) {
diff --git a/workspaces/test/assets.txt b/workspaces/test/assets.txt
index c9d077a..1389993 100644
--- a/workspaces/test/assets.txt
+++ b/workspaces/test/assets.txt
@@ -61,3 +61,10 @@ SHADER_COMPUTE_GEN_MASK, NONE, ../../common/shaders/compute/gen_mask.wgsl, "GPU
 CIRCLE_MASK_COMPUTE_SHADER, NONE, shaders/circle_mask_compute.wgsl, "Circle mask compute shader"
 CIRCLE_MASK_RENDER_SHADER, NONE, shaders/circle_mask_render.wgsl, "Circle mask render shader"
 MASKED_CUBE_SHADER, NONE, shaders/masked_cube.wgsl, "Masked cube shader"
+
+# --- Test Assets (for test_assets.cc) ---
+TEST_ASSET_1, NONE, test_assets/test_asset_1.txt, "Test static asset"
+TEST_IMAGE, NONE, test_assets/test_image.png, "Test 2x2 RGBA PNG image"
+PROC_NOISE_256, PROC(gen_noise_256, 42, 0), _, "Procedural 256x256 noise"
+PROC_UNKNOWN, PROC(unknown_func, 0, 0), _, "Unknown procedural function"
+PROC_FAIL, PROC(gen_fail, 0, 0), _, "Failing procedural function"
diff --git a/workspaces/test/test_assets/test_asset_1.txt b/workspaces/test/test_assets/test_asset_1.txt
new file mode 100644
index 0000000..ce6fe83
--- /dev/null
+++ b/workspaces/test/test_assets/test_asset_1.txt
@@ -0,0 +1 @@
+This is a test asset file.
diff --git a/workspaces/test/test_assets/test_image.png b/workspaces/test/test_assets/test_image.png
new file mode 100644
index 0000000..3dd3fe7
--- /dev/null
+++ b/workspaces/test/test_assets/test_image.png
diff --git a/workspaces/test/test_assets/test_image.tga b/workspaces/test/test_assets/test_image.tga
new file mode 100644
index 0000000..21009e9
--- /dev/null
+++ b/workspaces/test/test_assets/test_image.tga