该项目的目的是同时测试和演示来自 Unity DOTS 技术堆栈的多个新包。
您最多选择25个主题 主题必须以中文或者字母或数字开头,可以包含连字符 (-),并且长度不得超过35个字符
 
 
 
 

87 行
2.7 KiB

using UnityEngine;
public class Line3DBuffer
{
struct Line3DInstanceData
{
public Vector4 start;
public Vector4 end;
public Vector4 color;
}
public Line3DBuffer()
{
Shader shader = Shader.Find("Debug/Line3DShaderProc");
if (shader == null)
{
Debug.LogError("Line3DBuffer cant find shader resource");
}
m_Line3DMaterial = new Material(shader);
}
public void Shutdown()
{
if (m_Line3DInstanceBuffer != null)
m_Line3DInstanceBuffer.Release();
m_Line3DInstanceBuffer = null;
m_Line3DInstanceData = null;
}
public void PrepareBuffer()
{
if (m_Line3DInstanceBuffer == null || m_Line3DInstanceBuffer.count != m_Line3DInstanceData.Length)
{
if (m_Line3DInstanceBuffer != null)
{
m_Line3DInstanceBuffer.Release();
m_Line3DInstanceBuffer = null;
}
m_Line3DInstanceBuffer = new ComputeBuffer(m_Line3DInstanceData.Length, 16 + 16 + 16);
m_Line3DMaterial.SetBuffer("positionBuffer", m_Line3DInstanceBuffer);
}
m_Line3DInstanceBuffer.SetData(m_Line3DInstanceData, 0, 0, m_NumLine3DsUsed);
m_NumLine3DsToDraw = m_NumLine3DsUsed;
m_NumLine3DsUsed = 0;
// m_Line3DMaterial.SetVector("scales", new Vector4(1.0f / width, 1.0f / height, 1.0f / 1280.0f, 1.0f / 720.0f));
}
public void Draw()
{
m_Line3DMaterial.SetPass(0);
Graphics.DrawProceduralNow(MeshTopology.Triangles, m_NumLine3DsToDraw * 6, 1);
}
public void HDDraw(UnityEngine.Rendering.CommandBuffer cmd)
{
cmd.DrawProcedural(Matrix4x4.identity, m_Line3DMaterial, 0, MeshTopology.Triangles, m_NumLine3DsToDraw * 6, 1);
}
unsafe public void AddLine3D(Vector3 start, Vector3 end, Vector4 col)
{
if (m_NumLine3DsUsed >= m_Line3DInstanceData.Length)
{
// Resize
var newBuf = new Line3DInstanceData[m_Line3DInstanceData.Length + 128];
System.Array.Copy(m_Line3DInstanceData, newBuf, m_Line3DInstanceData.Length);
m_Line3DInstanceData = newBuf;
}
fixed(Line3DInstanceData* d = &m_Line3DInstanceData[m_NumLine3DsUsed])
{
d->color = col;
d->start = start;
d->start.w = 1.0f;
d->end = end;
d->end.w = 1.0f;
}
m_NumLine3DsUsed++;
}
ComputeBuffer m_Line3DInstanceBuffer;
int m_NumLine3DsUsed = 0;
int m_NumLine3DsToDraw = 0;
Line3DInstanceData[] m_Line3DInstanceData = new Line3DInstanceData[128];
Material m_Line3DMaterial;
}