public GameObject CreateBillboard(string path, string name, bool usingHDRP)
{
GameObject camObject = Instantiate(Resources.Load("Mtree/MtreeBillboardCamera") as GameObject); // create billboard and render it
Camera cam = camObject.GetComponent <Camera>();
Billboard bill = new Billboard(cam, gameObject, 512, 512);
bill.SetupCamera();
string texturePath = path + name + "_billboard.png";
bill.Render(texturePath);
DestroyImmediate(camObject);
Mesh billboardMesh = bill.CreateMesh(); // create billboard mesh
AssetDatabase.CreateAsset(billboardMesh, path + name + "_LOD4.mesh");
GameObject billboard = new GameObject(name + "_LOD4"); // create billboard object and assign mesh
MeshFilter meshFilter = billboard.AddComponent <MeshFilter>();
meshFilter.mesh = billboardMesh;
MeshRenderer meshRenderer = billboard.AddComponent <MeshRenderer>();
Texture billboardTexture = (Texture2D)AssetDatabase.LoadAssetAtPath(texturePath, typeof(Texture2D)); // create material
Material mat = bill.CreateMaterial(billboardTexture, usingHDRP);
meshRenderer.sharedMaterial = mat;
AssetDatabase.CreateAsset(mat, path + name + "billboard.mat");
return(billboard);
}
/// <summary>
/// Render the points
/// </summary>
private void DrawPoints()
{
if (fPoints.Count > 0 && fBillboard != null)
{
GraphicsDevice.BlendState = fBlendState;
GraphicsDevice.DepthStencilState = DepthStencilState.None;
Matrix vp = fCamera.Camera.ViewMatrix * fCamera.Camera.ProjectionMatrix;
fShader.Parameters["world"].SetValue(fCamera.Camera.WorldMatrix);
fShader.Parameters["vp"].SetValue(vp);
fShader.Parameters["particleTexture"].SetValue(fTexture);
for (int ps = 0; ps < fShader.CurrentTechnique.Passes.Count; ps++)
{
fShader.CurrentTechnique.Passes[ps].Apply();
fBillboard.Render();
}
}
}
/// <summary>
/// Render the points
/// </summary>
private void DrawPoints(GameTime gameTime)
{
if (fPoints.Count > 0 && fBillboard1 != null)
{
Matrix world = fCamera.Camera.WorldMatrix;
Matrix view = fCamera.Camera.ViewMatrix;
Matrix projection = fCamera.Camera.ProjectionMatrix;
if (!fHalted)
{
fWorldAngle += Convert.ToSingle(gameTime.ElapsedGameTime.TotalSeconds * 0.5f);
}
world = Matrix.CreateRotationY(fWorldAngle);
fBasicEffect.World = world;
fBasicEffect.View = view;
fBasicEffect.Projection = projection;
fBasicEffect.CurrentTechnique.Passes[0].Apply();
Texture2D[] textures;
if (fTextureMode == TextureMode.Faces)
{
textures = new Texture2D[] { fTexture1a, fTexture2a, fTexture3a }
}
;
else
{
textures = new Texture2D[] { fTexture1b, fTexture2b, fTexture3b }
};
if (fDrawMode == BillboardMode.PointList)
{
GraphicsDevice.DepthStencilState = DepthStencilState.Default;
GraphicsDevice.RasterizerState = RasterizerState.CullNone;
GraphicsDevice.BlendState = BlendState.Opaque;
Matrix vp = view * projection;
fShader.Parameters["world"].SetValue(world);
fShader.Parameters["vp"].SetValue(vp);
fShader.Parameters["particleTexture"].SetValue(textures[0]);
fShader.CurrentTechnique.Passes[0].Apply();
fBillboard1.Render();
fShader.Parameters["particleTexture"].SetValue(textures[1]);
fShader.CurrentTechnique.Passes[0].Apply();
fBillboard2.Render();
fShader.Parameters["particleTexture"].SetValue(textures[2]);
fShader.CurrentTechnique.Passes[0].Apply();
fBillboard3.Render();
}
else
{
// Step 1
GraphicsDevice.BlendState = BlendState.NonPremultiplied;
GraphicsDevice.DepthStencilState = DepthStencilState.Default;
GraphicsDevice.RasterizerState = RasterizerState.CullNone;
fAlpha1.View = view;
fAlpha1.Projection = projection;
fAlpha1.World = world;
fAlpha1.Texture = null;
fAlpha1.CurrentTechnique.Passes[0].Apply();
fAlpha1.Texture = textures[0];
fAlpha1.CurrentTechnique.Passes[0].Apply();
fBillboard1.Render();
fAlpha1.Texture = textures[1];
fAlpha1.CurrentTechnique.Passes[0].Apply();
fBillboard2.Render();
fAlpha1.Texture = textures[2];
fAlpha1.CurrentTechnique.Passes[0].Apply();
fBillboard3.Render();
// A second rending process can be neccessary for other textures
// Step 2
//GraphicsDevice.BlendState = BlendState.NonPremultiplied;
//GraphicsDevice.DepthStencilState = DepthStencilState.None;
//GraphicsDevice.RasterizerState = RasterizerState.CullNone;
//fAlpha2.View = view;
//fAlpha2.Projection = projection;
//fAlpha2.World = world;
//fAlpha2.Texture = null;
//fAlpha2.CurrentTechnique.Passes[0].Apply();
//fAlpha2.Texture = textures[0];
//fAlpha2.CurrentTechnique.Passes[0].Apply();
//fBillboard1.Render();
//fAlpha2.Texture = textures[1];
//fAlpha2.CurrentTechnique.Passes[0].Apply();
//fBillboard2.Render();
//fAlpha2.Texture = textures[2];
//fAlpha2.CurrentTechnique.Passes[0].Apply();
//fBillboard3.Render();
//GraphicsDevice.DepthStencilState = DepthStencilState.Default;
}
}
}
