refactor(3d): Split Renderer3D into modular files and fix compilation.

1 files changed, 255 insertions, 0 deletions

diff --git a/src/3d/renderer_pipelines.cc b/src/3d/renderer_pipelines.cc
new file mode 100644
index 0000000..d0f1a7b
--- /dev/null
+++ b/src/3d/renderer_pipelines.cc
@@ -0,0 +1,255 @@
+// This file is part of the 64k demo project.
+// It implements the pipeline creation logic for Renderer3D.
+
+#include "3d/renderer.h"
+#include "generated/assets.h"
+#include "gpu/effects/shader_composer.h"
+#include "util/asset_manager.h"
+#include "util/asset_manager_utils.h"
+#include <vector>
+
+void Renderer3D::create_pipeline() {
+  pipeline_ = create_pipeline_impl(true);
+  pipeline_no_bvh_ = create_pipeline_impl(false);
+  create_mesh_pipeline();
+}
+
+WGPURenderPipeline Renderer3D::create_pipeline_impl(bool use_bvh) {
+  // Main SDF shader
+  size_t size;
+  const char* shader_code = reinterpret_cast<const char*>(
+      GetAsset(AssetId::ASSET_SHADER_RENDERER_3D, &size));
+
+  // Compose the final shader by substituting the scene query implementation
+  ShaderComposer::CompositionMap composition_map;
+  if (use_bvh) {
+    composition_map["render/scene_query_mode"] = "render/scene_query_bvh";
+  } else {
+    composition_map["render/scene_query_mode"] = "render/scene_query_linear";
+  }
+  std::string composed_shader = ShaderComposer::Get().Compose(
+      {}, std::string(shader_code, size), composition_map);
+
+  WGPUShaderSourceWGSL wgsl_src = {};
+  wgsl_src.chain.sType = WGPUSType_ShaderSourceWGSL;
+  wgsl_src.code = str_view(composed_shader.c_str());
+
+  WGPUShaderModuleDescriptor shader_desc = {};
+  shader_desc.nextInChain = &wgsl_src.chain;
+  WGPUShaderModule shader_module =
+      wgpuDeviceCreateShaderModule(device_, &shader_desc);
+
+  // BIND GROUP LAYOUT
+  std::vector<WGPUBindGroupLayoutEntry> bgl_entries;
+  bgl_entries.push_back({.binding = 0, // B0: uniforms
+                         .visibility = WGPUShaderStage_Vertex |
+                                       WGPUShaderStage_Fragment,
+                         .buffer = {.type = WGPUBufferBindingType_Uniform}});
+  bgl_entries.push_back(
+      {.binding = 1, // B1: object storage
+       .visibility = WGPUShaderStage_Vertex | WGPUShaderStage_Fragment,
+       .buffer = {.type = WGPUBufferBindingType_ReadOnlyStorage}});
+  if (use_bvh) {
+    bgl_entries.push_back(
+        {.binding = 2, // B2: bvh storage
+         .visibility = WGPUShaderStage_Fragment,
+         .buffer = {.type = WGPUBufferBindingType_ReadOnlyStorage}});
+  }
+  bgl_entries.push_back({.binding = 3, // B3: noise texture
+                         .visibility = WGPUShaderStage_Fragment,
+                         .texture = {.sampleType = WGPUTextureSampleType_Float,
+                                     .viewDimension =
+                                         WGPUTextureViewDimension_2D}});
+  bgl_entries.push_back({.binding = 4, // B4: default sampler
+                         .visibility = WGPUShaderStage_Fragment,
+                         .sampler = {.type = WGPUSamplerBindingType_Filtering}});
+  bgl_entries.push_back({.binding = 5, // B5: sky texture
+                         .visibility = WGPUShaderStage_Fragment,
+                         .texture = {.sampleType = WGPUTextureSampleType_Float,
+                                     .viewDimension =
+                                         WGPUTextureViewDimension_2D}});
+
+  WGPUBindGroupLayoutDescriptor bgl_desc = {};
+  bgl_desc.entryCount = bgl_entries.size();
+  bgl_desc.entries = bgl_entries.data();
+  WGPUBindGroupLayout bind_group_layout =
+      wgpuDeviceCreateBindGroupLayout(device_, &bgl_desc);
+
+  // PIPELINE LAYOUT
+  WGPUPipelineLayoutDescriptor pl_desc = {};
+  pl_desc.bindGroupLayoutCount = 1;
+  pl_desc.bindGroupLayouts = &bind_group_layout;
+  WGPUPipelineLayout pipeline_layout =
+      wgpuDeviceCreatePipelineLayout(device_, &pl_desc);
+
+  // PIPELINE
+  WGPUDepthStencilState depth_stencil = {};
+  depth_stencil.format = WGPUTextureFormat_Depth24Plus;
+  depth_stencil.depthWriteEnabled = WGPUOptionalBool_True;
+  depth_stencil.depthCompare = WGPUCompareFunction_Less;
+
+  WGPUColorTargetState color_target = {};
+  color_target.format = format_;
+  color_target.writeMask = WGPUColorWriteMask_All;
+
+  WGPUFragmentState fragment_state = {};
+  fragment_state.module = shader_module;
+  fragment_state.entryPoint = str_view("fs_main");
+  fragment_state.targetCount = 1;
+  fragment_state.targets = &color_target;
+
+  WGPURenderPipelineDescriptor pipeline_desc = {};
+  pipeline_desc.layout = pipeline_layout;
+  pipeline_desc.vertex.module = shader_module;
+  pipeline_desc.vertex.entryPoint = str_view("vs_main");
+  pipeline_desc.primitive.topology = WGPUPrimitiveTopology_TriangleList;
+  pipeline_desc.multisample.count = 1;
+  pipeline_desc.fragment = &fragment_state;
+  pipeline_desc.depthStencil = &depth_stencil;
+
+  WGPURenderPipeline pipeline =
+      wgpuDeviceCreateRenderPipeline(device_, &pipeline_desc);
+
+  wgpuShaderModuleRelease(shader_module);
+  wgpuPipelineLayoutRelease(pipeline_layout);
+  wgpuBindGroupLayoutRelease(bind_group_layout);
+
+  return pipeline;
+}
+
+void Renderer3D::create_mesh_pipeline() {
+  size_t size;
+  const char* shader_code = reinterpret_cast<const char*>(
+      GetAsset(AssetId::ASSET_SHADER_MESH, &size));
+
+  ShaderComposer::CompositionMap composition_map;
+  if (bvh_enabled_) {
+    composition_map["render/scene_query_mode"] = "render/scene_query_bvh";
+  } else {
+    composition_map["render/scene_query_mode"] = "render/scene_query_linear";
+  }
+  std::string composed_shader = ShaderComposer::Get().Compose(
+      {}, std::string(shader_code, size), composition_map);
+
+  WGPUShaderSourceWGSL wgsl_src = {};
+  wgsl_src.chain.sType = WGPUSType_ShaderSourceWGSL;
+  wgsl_src.code = str_view(composed_shader.c_str());
+  WGPUShaderModuleDescriptor shader_desc = {};
+  shader_desc.nextInChain = &wgsl_src.chain;
+  WGPUShaderModule shader_module =
+      wgpuDeviceCreateShaderModule(device_, &shader_desc);
+
+  WGPUBindGroupLayout bgl =
+      wgpuRenderPipelineGetBindGroupLayout(pipeline_, 0);
+  WGPUPipelineLayoutDescriptor pl_desc = {};
+  pl_desc.bindGroupLayoutCount = 1;
+  pl_desc.bindGroupLayouts = &bgl;
+  WGPUPipelineLayout pipeline_layout =
+      wgpuDeviceCreatePipelineLayout(device_, &pl_desc);
+  wgpuBindGroupLayoutRelease(bgl);
+
+  WGPUDepthStencilState depth_stencil = {};
+  depth_stencil.format = WGPUTextureFormat_Depth24Plus;
+  depth_stencil.depthWriteEnabled = WGPUOptionalBool_True;
+  depth_stencil.depthCompare = WGPUCompareFunction_Less;
+
+  WGPUColorTargetState color_target = {};
+  color_target.format = format_;
+  color_target.writeMask = WGPUColorWriteMask_All;
+  WGPUFragmentState fragment_state = {};
+  fragment_state.module = shader_module;
+  fragment_state.entryPoint = str_view("fs_main");
+  fragment_state.targetCount = 1;
+  fragment_state.targets = &color_target;
+
+  WGPUVertexAttribute vert_attrs[3] = {};
+  vert_attrs[0] = {.format = WGPUVertexFormat_Float32x3, .offset = offsetof(MeshVertex, p), .shaderLocation = 0};
+  vert_attrs[1] = {.format = WGPUVertexFormat_Float32x3, .offset = offsetof(MeshVertex, n), .shaderLocation = 1};
+  vert_attrs[2] = {.format = WGPUVertexFormat_Float32x2, .offset = offsetof(MeshVertex, u), .shaderLocation = 2};
+  
+  WGPUVertexBufferLayout vert_buffer_layout = {};
+  vert_buffer_layout.arrayStride = sizeof(MeshVertex);
+  vert_buffer_layout.stepMode = WGPUVertexStepMode_Vertex;
+  vert_buffer_layout.attributeCount = 3;
+  vert_buffer_layout.attributes = vert_attrs;
+
+  WGPURenderPipelineDescriptor pipeline_desc = {};
+  pipeline_desc.layout = pipeline_layout;
+  pipeline_desc.vertex.module = shader_module;
+  pipeline_desc.vertex.entryPoint = str_view("vs_main");
+  pipeline_desc.vertex.bufferCount = 1;
+  pipeline_desc.vertex.buffers = &vert_buffer_layout;
+  pipeline_desc.primitive.topology = WGPUPrimitiveTopology_TriangleList;
+  pipeline_desc.primitive.cullMode = WGPUCullMode_Back;
+  pipeline_desc.multisample.count = 1;
+  pipeline_desc.fragment = &fragment_state;
+  pipeline_desc.depthStencil = &depth_stencil;
+
+  mesh_pipeline_ = wgpuDeviceCreateRenderPipeline(device_, &pipeline_desc);
+
+  wgpuShaderModuleRelease(shader_module);
+  wgpuPipelineLayoutRelease(pipeline_layout);
+}
+
+void Renderer3D::create_skybox_pipeline() {
+  size_t size;
+  const char* shader_code = reinterpret_cast<const char*>(
+      GetAsset(AssetId::ASSET_SHADER_SKYBOX, &size));
+  
+  std::string composed_shader = ShaderComposer::Get().Compose(
+      {}, std::string(shader_code, size));
+
+  WGPUShaderSourceWGSL wgsl_src = {};
+  wgsl_src.chain.sType = WGPUSType_ShaderSourceWGSL;
+  wgsl_src.code = str_view(composed_shader.c_str());
+  WGPUShaderModuleDescriptor shader_desc = {};
+  shader_desc.nextInChain = &wgsl_src.chain;
+  WGPUShaderModule shader_module =
+      wgpuDeviceCreateShaderModule(device_, &shader_desc);
+
+  WGPUBindGroupLayoutEntry bgl_entries[3] = {};
+  bgl_entries[0] = {.binding=0, .visibility=WGPUShaderStage_Fragment, .texture={.sampleType=WGPUTextureSampleType_Float, .viewDimension=WGPUTextureViewDimension_2D}};
+  bgl_entries[1] = {.binding=1, .visibility=WGPUShaderStage_Fragment, .sampler={.type=WGPUSamplerBindingType_Filtering}};
+  bgl_entries[2] = {.binding=2, .visibility=WGPUShaderStage_Fragment, .buffer={.type=WGPUBufferBindingType_Uniform}};
+
+  WGPUBindGroupLayoutDescriptor bgl_desc = {};
+  bgl_desc.entryCount = 3;
+  bgl_desc.entries = bgl_entries;
+  WGPUBindGroupLayout bind_group_layout =
+      wgpuDeviceCreateBindGroupLayout(device_, &bgl_desc);
+
+  WGPUPipelineLayoutDescriptor pl_desc = {};
+  pl_desc.bindGroupLayoutCount = 1;
+  pl_desc.bindGroupLayouts = &bind_group_layout;
+  WGPUPipelineLayout pipeline_layout =
+      wgpuDeviceCreatePipelineLayout(device_, &pl_desc);
+
+  WGPUDepthStencilState depth_stencil = {};
+  depth_stencil.format = WGPUTextureFormat_Depth24Plus;
+  depth_stencil.depthWriteEnabled = WGPUOptionalBool_False;
+  depth_stencil.depthCompare = WGPUCompareFunction_Always;
+
+  WGPUColorTargetState color_target = {};
+  color_target.format = format_;
+  color_target.writeMask = WGPUColorWriteMask_All;
+  WGPUFragmentState fragment_state = {};
+  fragment_state.module = shader_module;
+  fragment_state.entryPoint = str_view("fs_main");
+  fragment_state.targetCount = 1;
+  fragment_state.targets = &color_target;
+
+  WGPURenderPipelineDescriptor pipeline_desc = {};
+  pipeline_desc.layout = pipeline_layout;
+  pipeline_desc.vertex.module = shader_module;
+  pipeline_desc.vertex.entryPoint = str_view("vs_main");
+  pipeline_desc.primitive.topology = WGPUPrimitiveTopology_TriangleList;
+  pipeline_desc.multisample.count = 1;
+  pipeline_desc.fragment = &fragment_state;
+  pipeline_desc.depthStencil = &depth_stencil;
+
+  skybox_pipeline_ = wgpuDeviceCreateRenderPipeline(device_, &pipeline_desc);
+
+  wgpuShaderModuleRelease(shader_module);
+  wgpuPipelineLayoutRelease(pipeline_layout);
+  wgpuBindGroupLayoutRelease(bind_group_layout);
+}
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