From cd807732799904f6731f460cc0469143c410c2c9 Mon Sep 17 00:00:00 2001 From: skal Date: Sun, 8 Feb 2026 19:09:05 +0100 Subject: feat(gpu): Add WGSL noise and hash function library (Task #59) Implements comprehensive RNG and noise functions for procedural shader effects: Hash Functions: - hash_1f, hash_2f, hash_3f (float-based, fast) - hash_2f_2f, hash_3f_3f (vector output) - hash_1u, hash_1u_2f, hash_1u_3f (integer-based, high quality) Noise Functions: - noise_2d, noise_3d (value noise with smoothstep) - fbm_2d, fbm_3d (fractional Brownian motion) - gyroid (periodic minimal surface) Integration: - Added to ShaderComposer as "math/noise" snippet - Available via #include "math/noise" in WGSL shaders - Test suite validates all 11 functions compile Testing: - test_noise_functions.cc validates shader loading - All 33 tests pass (100%) Size Impact: ~200-400 bytes per function used (dead-code eliminated) Files: - assets/final/shaders/math/noise.wgsl (new, 4.2KB, 150 lines) - assets/final/demo_assets.txt (added SHADER_MATH_NOISE) - assets/final/test_assets_list.txt (added SHADER_MATH_NOISE) - src/gpu/effects/shaders.cc (registered snippet) - src/tests/test_noise_functions.cc (new test) - CMakeLists.txt (added test target) Co-Authored-By: Claude Sonnet 4.5 --- assets/final/demo_assets.txt | 1 + 1 file changed, 1 insertion(+) (limited to 'assets/final/demo_assets.txt') diff --git a/assets/final/demo_assets.txt b/assets/final/demo_assets.txt index 5d40f7f..14e7cdb 100644 --- a/assets/final/demo_assets.txt +++ b/assets/final/demo_assets.txt @@ -43,6 +43,7 @@ SHADER_SKYBOX, NONE, shaders/skybox.wgsl, "Skybox background shader" SHADER_MATH_SDF_SHAPES, NONE, shaders/math/sdf_shapes.wgsl, "SDF Shapes Snippet" SHADER_MATH_SDF_UTILS, NONE, shaders/math/sdf_utils.wgsl, "SDF Utils Snippet" SHADER_MATH_COMMON_UTILS, NONE, shaders/math/common_utils.wgsl, "Common Math Utils" +SHADER_MATH_NOISE, NONE, shaders/math/noise.wgsl, "RNG and Noise Functions" SHADER_RENDER_SHADOWS, NONE, shaders/render/shadows.wgsl, "Shadows Snippet" SHADER_RENDER_SCENE_QUERY_BVH, NONE, shaders/render/scene_query_bvh.wgsl, "Scene Query Snippet (BVH)" SHADER_RENDER_SCENE_QUERY_LINEAR, NONE, shaders/render/scene_query_linear.wgsl, "Scene Query Snippet (Linear)" -- cgit v1.2.3