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// 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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