public override void Draw(GameTime gameTime)
{
//BasicEffect effect = new BasicEffect(GraphicsDevice, null);
effect.World = Matrix.Identity; //No transformation of the terrain
effect.View = Game1.camera.view;
effect.Projection = Game1.camera.project;
effect.Texture = texture;
effect.TextureEnabled = true;
GraphicsDevice.Vertices[0].SetSource(vb, 0, VertexPositionTexture.SizeInBytes); //Set vertices
GraphicsDevice.Indices = ib; //Set indices
GraphicsDevice.VertexDeclaration = new VertexDeclaration(GraphicsDevice, VertexPositionTexture.VertexElements); //Decalre type of vertices
effect.Begin(); //Begin effect
foreach (EffectPass CurrentPass in effect.CurrentTechnique.Passes)
{
CurrentPass.Begin();
GraphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0, numVertices, 0, numTriangles); //Draw all triangles that make up the mesh
CurrentPass.End();
}
effect.End();
base.Draw(gameTime);
}
public void Draw(GameTime gameTime, Camera camera)
{
float elapsedTime = (float)gameTime.ElapsedGameTime.TotalSeconds;
effect.Parameters["view"].SetValue(camera.View);
effect.Parameters["projection"].SetValue(camera.Projection);
effect.Parameters["viewportHeight"].SetValue(device.Viewport.Height);
effect.Parameters["modelTexture"].SetValue(texture);
spriteArray_Count = -1;
for (int i = 0; i < particle.Length; i++)
{
if (particle[i].isActive)
{
spriteArray[++spriteArray_Count] = new VertexPointSprite(particle[i].position,
particle[i].Scale * PointSize,
particle[i].ParColor);
}
}
if (spriteArray_Count <= 0)
{
return;
}
// 頂點格式宣告
device.VertexDeclaration = pointSpriteVertexDeclaration;
SetParticleRenderStates(device.RenderState);
/*
* device.RenderState.AlphaBlendEnable = true;
* device.RenderState.SourceBlend = Blend.SourceAlpha;
* device.RenderState.DestinationBlend = Blend.InverseSourceAlpha;
* device.RenderState.AlphaTestEnable = true;
* device.RenderState.AlphaFunction = CompareFunction.Greater;
* device.RenderState.PointSize = 1000.0f;
* device.RenderState.PointSizeMax = 10000.0f;
* device.RenderState.PointSizeMin = 100.0f;
* device.RenderState.DepthBufferEnable = true ;
*/
effect.CurrentTechnique = effect.Techniques["PointSprites"];
effect.Begin();
foreach (EffectPass CurrentPass in effect.CurrentTechnique.Passes)
{
CurrentPass.Begin();
device.DrawUserPrimitives(PrimitiveType.PointList,
spriteArray,
0,
spriteArray_Count);
CurrentPass.End();
}
effect.End();
device.RenderState.DepthBufferEnable = true;
device.RenderState.AlphaBlendEnable = false;
device.RenderState.AlphaTestEnable = false;
device.RenderState.PointSpriteEnable = false;
device.RenderState.DepthBufferWriteEnable = true;
}