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using System.Numerics;
using System.Runtime.InteropServices;
using VKE;
using Vulkan;
namespace ModelSample {
class Program : VkWindow {
static void Main (string[] args) {
using (Program vke = new Program ()) {
vke.Run ();
}
}
float rotSpeed = 0.01f, zoomSpeed = 0.01f;
float rotX, rotY, rotZ = 0f, zoom = 1f;
struct Matrices {
public Matrix4x4 projection;
public Matrix4x4 view;
public Matrix4x4 model;
}
struct Vertex {
Vector3 position;
Vector3 color;
public Vertex (float x, float y, float z, float r, float g, float b) {
position = new Vector3 (x, y, z);
color = new Vector3 (r, g, b);
}
}
Matrices matrices;
HostBuffer ibo;
HostBuffer vbo;
HostBuffer uboMats;
DescriptorPool descriptorPool;
DescriptorSetLayout dsLayout;
DescriptorSet descriptorSet;
Framebuffer[] frameBuffers;
Pipeline pipeline;
Vertex[] vertices = {
new Vertex ( 1.0f, 1.0f, 0.0f , 1.0f, 0.0f, 0.0f),
new Vertex (-1.0f, 1.0f, 0.0f , 0.0f, 1.0f, 0.0f),
new Vertex ( 0.0f, -1.0f, 0.0f , 0.0f, 0.0f, 1.0f),
};
ushort[] indices = new ushort[] { 0, 1, 2 };
Program () : base () {
vbo = new HostBuffer<Vertex> (dev, VkBufferUsageFlags.VertexBuffer, vertices);
ibo = new HostBuffer<ushort> (dev, VkBufferUsageFlags.IndexBuffer, indices);
uboMats = new HostBuffer (dev, VkBufferUsageFlags.UniformBuffer, matrices);
descriptorPool = new DescriptorPool (dev, 1, new VkDescriptorPoolSize (VkDescriptorType.UniformBuffer));
dsLayout = new DescriptorSetLayout (dev,
new VkDescriptorSetLayoutBinding (0, VkShaderStageFlags.Vertex|VkShaderStageFlags.Fragment, VkDescriptorType.UniformBuffer));
descriptorSet = descriptorPool.Allocate (dsLayout);
pipeline = new Pipeline (dev,
swapChain.ColorFormat,
dev.GetSuitableDepthFormat (),
VkPrimitiveTopology.TriangleList, VkSampleCountFlags.Count1);
pipeline.Layout = new PipelineLayout (dev, dsLayout);
pipeline.AddVertexBinding<Vertex> (0);
pipeline.SetVertexAttributes (0, VkFormat.R32g32b32Sfloat, VkFormat.R32g32b32Sfloat);
pipeline.AddShader (VkShaderStageFlags.Vertex, "shaders/triangle.vert.spv");
pipeline.AddShader (VkShaderStageFlags.Fragment, "shaders/triangle.frag.spv");
pipeline.Activate ();
using (DescriptorSetWrites uboUpdate = new DescriptorSetWrites (dev)) {
uboUpdate.AddWriteInfo (descriptorSet, dsLayout.Bindings[0], uboMats.Descriptor);
uboUpdate.Update ();
}
uboMats.Map ();
}
public override void Update () {
matrices.projection = Matrix4x4.CreatePerspectiveFieldOfView (Utils.DegreesToRadians (60f), (float)swapChain.Width / (float)swapChain.Height, 0.1f, 256.0f);
matrices.view = Matrix4x4.CreateTranslation (0, 0, -2.5f * zoom);
matrices.model =
Matrix4x4.CreateFromAxisAngle (Vector3.UnitZ, rotZ) *
Matrix4x4.CreateFromAxisAngle (Vector3.UnitY, rotY) *
Matrix4x4.CreateFromAxisAngle (Vector3.UnitX, rotX);
uboMats.Update (matrices, (uint)Marshal.SizeOf<Matrices> ());
updateRequested = false;
}
protected override void onMouseMove (double xPos, double yPos) {
double diffX = lastMouseX - xPos;
double diffY = lastMouseY - yPos;
if (MouseButton[0]) {
rotY -= rotSpeed * (float)diffX;
rotX += rotSpeed * (float)diffY;
} else if (MouseButton[1]) {
zoom += zoomSpeed * (float)diffY;
}
updateRequested = true;
}
protected override void OnResize () {
if (frameBuffers!=null)
for (int i = 0; i < swapChain.ImageCount; ++i)
frameBuffers[i]?.Dispose ();
frameBuffers = new Framebuffer[swapChain.ImageCount];
for (int i = 0; i < swapChain.ImageCount; ++i) {
frameBuffers[i] = new Framebuffer (pipeline.RenderPass, swapChain.Width, swapChain.Height,
(pipeline.Samples == VkSampleCountFlags.Count1) ? new Image[] {
swapChain.images[i],
null
} : new Image[] {
null,
null,
swapChain.images[i]
});
cmds[i] = cmdPool.AllocateCommandBuffer ();
cmds[i].Start ();
pipeline.RenderPass.Begin (cmds[i], frameBuffers[i]);
cmds[i].SetViewport (swapChain.Width, swapChain.Height);
cmds[i].SetScissor (swapChain.Width, swapChain.Height);
cmds[i].BindDescriptorSet (pipeline.Layout, descriptorSet);
cmds[i].BindPipeline (pipeline);
cmds[i].BindVertexBuffer (vbo);
cmds[i].BindIndexBuffer (ibo, VkIndexType.Uint16);
cmds[i].DrawIndexed ((uint)indices.Length);
pipeline.RenderPass.End (cmds[i]);
cmds[i].End ();
}
}
protected override void Dispose (bool disposing) {
if (disposing) {
if (!isDisposed) {
dev.WaitIdle ();
pipeline.Dispose ();
dsLayout.Dispose ();
for (int i = 0; i < swapChain.ImageCount; i++)
frameBuffers[i].Dispose ();
descriptorPool.Dispose ();
vbo.Dispose ();
ibo.Dispose ();
uboMats.Dispose ();
}
}
base.Dispose (disposing);
}
}
}
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