public static void nextMode()
{
switch (_state)
{
case INSTANCE_MODE.NORMAL:
_state = INSTANCE_MODE.DEBUG;
break;
case INSTANCE_MODE.DEBUG:
_state = INSTANCE_MODE.NORMAL;
break;
}
}
public void Draw(Camera pCamera)
{
if (_internalstate != _state)
{
_internalstate = _state;
LoadParticleInstance();
}
// Tell the GPU to read from both the model vertex buffer plus our instanceVertexBuffer.
_graphicsDevice.SetVertexBuffers(
new VertexBufferBinding(_vertexBuffer, 0, 0),
new VertexBufferBinding(instanceVertexBuffer, 0, 1)
);
_graphicsDevice.Indices = _indexBuffer;
// Set up the instance rendering effect.
_effect.CurrentTechnique = _effect.Techniques["InstancingBB"];
_effect.Parameters["world"].SetValue(Matrix.Identity);
_effect.Parameters["view"].SetValue(pCamera.ViewMatrix);
_effect.Parameters["projection"].SetValue(pCamera.ProjMatrix);
_effect.Parameters["Texture"].SetValue(_billboardTexture);
_effect.Parameters["positionMap"].SetValue(_sharedList.ParticlePositions);
/*_effect.Parameters["alphaTestDirection"].SetValue(1.0f);
* _effect.Parameters["alphaTestThreshold"].SetValue(0.3f);*/
_effect.Parameters["BBSize"].SetValue((_state == INSTANCE_MODE.DEBUG) ? _DebugBBSize : _BBSize);
_effect.Parameters["debug"].SetValue((_state == INSTANCE_MODE.DEBUG) ? true : false);
_graphicsDevice.BlendState = BlendState.AlphaBlend;
_graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
_graphicsDevice.RasterizerState = RasterizerState.CullNone;
// Draw all the instance copies in a single call.
foreach (EffectPass pass in _effect.CurrentTechnique.Passes)
{
pass.Apply();
_graphicsDevice.DrawInstancedPrimitives(PrimitiveType.TriangleList, 0, 0,
_vertexBuffer.VertexCount, 0,
_indexBuffer.IndexCount / 3, SharedList.SquareSize * SharedList.SquareSize);
}
}
