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webgpu triangle

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This commit is contained in:
Jorijn van der Graaf 2026-05-18 18:43:30 +02:00
commit 5553ded476
22 changed files with 2107 additions and 42 deletions
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68
examples/VulkanTriangle/main.cpp
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@ -1,4 +1,6 @@
#ifndef CRAFTER_GRAPHICS_WINDOW_DOM
#include "vulkan/vulkan.h"
#endif
#include <cassert>
import Crafter.Graphics;
@ -7,7 +9,7 @@ import std;
import Crafter.Event;
import Crafter.Math;
#ifndef CRAFTER_GRAPHICS_WINDOW_DOM
int main() {
Device::Initialize();
Window window(1280, 720, "HelloVulkan");
@ -89,7 +91,7 @@ int main() {
RenderingElement3D::elements.emplace_back(&renderer);
MatrixRowMajor<float, 4, 3, 1> transform = MatrixRowMajor<float, 4, 3, 1>::Identity();
std::memcpy(renderer.instance.transform.matrix, transform.m, sizeof(transform.m));
transform.Store(reinterpret_cast<float*>(renderer.instance.transform.matrix));
RenderingElement3D::BuildTLAS(cmd, 0);
RenderingElement3D::BuildTLAS(cmd, 1);
RenderingElement3D::BuildTLAS(cmd, 2);
@ -202,3 +204,65 @@ int main() {
window.Render();
window.StartSync();
}
#else
// DOM-mode port. Same scene (one triangle), software-emulated raytracing
// via compute. Shaders are read from .wgsl files shipped as static
// assets (see project.cpp). Renders barycentric colors via the
// hit/miss/raygen mega-switch in PipelineRTWebGPU.
int main() {
Device::Initialize();
static Window window(1280, 720, "HelloVulkan");
auto cmd = window.StartInit();
DescriptorHeapWebGPU heap;
heap.Initialize(/*images*/ 4, /*buffers*/ 4, /*samplers*/ 2);
std::array<WebGPUShader, 3> shaders {{
WebGPUShader(std::filesystem::path("raygen.wgsl"), "raygen_main", WebGPURTStage::Raygen),
WebGPUShader(std::filesystem::path("miss.wgsl"), "miss_main", WebGPURTStage::Miss),
WebGPUShader(std::filesystem::path("closesthit.wgsl"), "closesthit_main", WebGPURTStage::ClosestHit),
}};
ShaderBindingTableWebGPU sbt;
sbt.Init(shaders);
std::array<RTShaderGroup, 1> raygenGroups {{
{ .type = RTShaderGroupType::General, .generalShader = 0 },
}};
std::array<RTShaderGroup, 1> missGroups {{
{ .type = RTShaderGroupType::General, .generalShader = 1 },
}};
std::array<RTShaderGroup, 1> hitGroups {{
{ .type = RTShaderGroupType::TrianglesHitGroup, .closestHitShader = 2 },
}};
PipelineRTWebGPU pipeline;
pipeline.Init(cmd, raygenGroups, missGroups, hitGroups, sbt);
Mesh triangleMesh;
std::array<Vector<float, 3, 3>, 3> verts {{{-150, -150, 100}, {0, 150, 100}, {150, -150, 100}}};
std::array<std::uint32_t, 3> index {{2, 1, 0}};
triangleMesh.Build(verts, index, cmd);
static RenderingElement3D renderer;
renderer.instance.transform.matrix[0][0] = 1; renderer.instance.transform.matrix[0][1] = 0; renderer.instance.transform.matrix[0][2] = 0; renderer.instance.transform.matrix[0][3] = 0;
renderer.instance.transform.matrix[1][0] = 0; renderer.instance.transform.matrix[1][1] = 1; renderer.instance.transform.matrix[1][2] = 0; renderer.instance.transform.matrix[1][3] = 0;
renderer.instance.transform.matrix[2][0] = 0; renderer.instance.transform.matrix[2][1] = 0; renderer.instance.transform.matrix[2][2] = 1; renderer.instance.transform.matrix[2][3] = 0;
renderer.instance.instanceCustomIndex = 0;
renderer.instance.mask = 0xFF;
renderer.instance.instanceShaderBindingTableRecordOffset = 0;
renderer.instance.flags = kRTGeometryInstanceForceOpaque;
renderer.instance.accelerationStructureReference = triangleMesh.blasAddr;
RenderingElement3D::Add(&renderer);
RenderingElement3D::BuildTLAS(cmd, 0);
window.descriptorHeap = &heap;
window.FinishInit();
RTPass rtPass(&pipeline);
window.passes.push_back(&rtPass);
window.Render();
window.StartUpdate();
window.StartSync();
}
#endif