/// <summary>
/// Drawing
/// </summary>
/// <param name="context">Context</param>
public void Draw(DrawContext context)
{
var drawerMode = context.DrawerMode;
if ((drawerMode.HasFlag(DrawerModes.OpaqueOnly) && !this.parameters.Transparent) ||
(drawerMode.HasFlag(DrawerModes.TransparentOnly) && this.parameters.Transparent))
{
var effect = DrawerPool.EffectDefaultGPUParticles;
#region Per frame update
var state = new EffectParticleState
{
TotalTime = this.Emitter.TotalTime,
ElapsedTime = this.Emitter.ElapsedTime,
EmissionRate = this.Emitter.EmissionRate,
VelocitySensitivity = this.parameters.EmitterVelocitySensitivity,
HorizontalVelocity = this.parameters.HorizontalVelocity,
VerticalVelocity = this.parameters.VerticalVelocity,
RandomValues = Helper.RandomGenerator.NextVector4(Vector4.Zero, Vector4.One),
MaxDuration = this.parameters.MaxDuration,
MaxDurationRandomness = this.parameters.MaxDurationRandomness,
EndVelocity = this.parameters.EndVelocity,
Gravity = this.parameters.Gravity,
StartSize = this.parameters.StartSize,
EndSize = this.parameters.EndSize,
MinColor = this.parameters.MinColor,
MaxColor = this.parameters.MaxColor,
RotateSpeed = this.parameters.RotateSpeed,
};
effect.UpdatePerFrame(
context.ViewProjection,
context.EyePosition,
state,
this.TextureCount,
this.Texture);
#endregion
this.StreamOut(effect);
this.ToggleBuffers();
this.Draw(effect, context.DrawerMode);
}
}
/// <summary>
/// Draw particles
/// </summary>
/// <param name="context">Context</param>
public void Draw(DrawContext context)
{
if (this.ActiveParticles <= 0)
{
return;
}
var mode = context.DrawerMode;
var draw =
(mode.HasFlag(DrawerModes.ShadowMap)) ||
(mode.HasFlag(DrawerModes.OpaqueOnly) && !this.parameters.Transparent) ||
(mode.HasFlag(DrawerModes.TransparentOnly) && this.parameters.Transparent);
if (!draw)
{
return;
}
var rot = this.parameters.RotateSpeed != Vector2.Zero;
var effect = DrawerPool.EffectDefaultCPUParticles;
var technique = rot ? effect.RotationDraw : effect.NonRotationDraw;
if (!mode.HasFlag(DrawerModes.ShadowMap))
{
Counters.InstancesPerFrame++;
Counters.PrimitivesPerFrame += this.ActiveParticles;
}
var graphics = this.Game.Graphics;
graphics.IASetVertexBuffers(BufferSlot, this.buffer.VertexBufferBinding);
graphics.IAInputLayout = rot ? this.buffer.InputLayouts[0] : this.buffer.InputLayouts[1];
graphics.IAPrimitiveTopology = PrimitiveTopology.PointList;
graphics.SetDepthStencilRDZEnabled();
if (this.parameters.Additive)
{
graphics.SetBlendAdditive();
}
else if (this.parameters.Transparent)
{
graphics.SetBlendDefaultAlpha();
}
else
{
graphics.SetBlendDefault();
}
var state = new EffectParticleState
{
TotalTime = this.Emitter.TotalTime,
MaxDuration = this.parameters.MaxDuration,
MaxDurationRandomness = this.parameters.MaxDurationRandomness,
EndVelocity = this.parameters.EndVelocity,
Gravity = this.parameters.Gravity,
StartSize = this.parameters.StartSize,
EndSize = this.parameters.EndSize,
MinColor = this.parameters.MinColor,
MaxColor = this.parameters.MaxColor,
RotateSpeed = this.parameters.RotateSpeed,
};
effect.UpdatePerFrame(
context.ViewProjection,
context.EyePosition,
state,
this.TextureCount,
this.Texture);
for (int p = 0; p < technique.PassCount; p++)
{
graphics.EffectPassApply(technique, p, 0);
graphics.Draw(this.ActiveParticles, 0);
}
}