From 744bcadfe8f4bb1b2d4f1daf9f880fa511d65405 Mon Sep 17 00:00:00 2001 From: skal Date: Mon, 9 Feb 2026 13:59:07 +0100 Subject: feat(gpu): Phase 2 - Add gen_perlin and gen_grid GPU compute shaders Complete Phase 2 implementation: - gen_perlin.wgsl: FBM with configurable octaves, amplitude decay - gen_grid.wgsl: Grid pattern with configurable spacing/thickness - TextureManager extensions: create_gpu_perlin_texture(), create_gpu_grid_texture() - Asset packer now validates gen_noise, gen_perlin, gen_grid for PROC_GPU() - 3 compute pipelines (lazy-init on first use) Shader parameters: - gen_perlin: seed, frequency, amplitude, amplitude_decay, octaves (32 bytes) - gen_grid: width, height, grid_size, thickness (16 bytes) test_3d_render migration: - Replaced CPU sky texture (gen_perlin) with GPU version - Replaced CPU noise texture (gen_noise) with GPU version - Added new GPU grid texture (256x256, 32px grid, 2px lines) Size impact: - gen_perlin.wgsl: ~200 bytes (compressed) - gen_grid.wgsl: ~100 bytes (compressed) - Total Phase 2 code: ~300 bytes - Cumulative (Phase 1+2): ~600 bytes Testing: - All 34 tests passing (100%) - test_gpu_procedural validates all generators - test_3d_render uses 3 GPU textures (noise, perlin, grid) Next: Phase 3 - Variable dimensions, async generation, pipeline caching Co-Authored-By: Claude Sonnet 4.5 --- src/gpu/texture_manager.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'src/gpu/texture_manager.h') diff --git a/src/gpu/texture_manager.h b/src/gpu/texture_manager.h index 0cffe0c..b2dea84 100644 --- a/src/gpu/texture_manager.h +++ b/src/gpu/texture_manager.h @@ -46,6 +46,10 @@ class TextureManager { // GPU procedural generation void create_gpu_noise_texture(const std::string& name, const GpuProceduralParams& params); + void create_gpu_perlin_texture(const std::string& name, + const GpuProceduralParams& params); + void create_gpu_grid_texture(const std::string& name, + const GpuProceduralParams& params); #if !defined(STRIP_ALL) // On-demand lazy generation (stripped in final builds) @@ -59,8 +63,14 @@ class TextureManager { private: void dispatch_noise_compute(WGPUTexture target, const GpuProceduralParams& params); + void dispatch_perlin_compute(WGPUTexture target, + const GpuProceduralParams& params); + void dispatch_grid_compute(WGPUTexture target, + const GpuProceduralParams& params); WGPUDevice device_; WGPUQueue queue_; std::map textures_; WGPUComputePipeline noise_compute_pipeline_ = nullptr; + WGPUComputePipeline perlin_compute_pipeline_ = nullptr; + WGPUComputePipeline grid_compute_pipeline_ = nullptr; }; -- cgit v1.2.3