//
private void PrepareState()
{
if (m_Initialized)
{
if (PARTICLES_COUNT != m_PositionBuffer.Length)
{
m_RotationLocalBuffer.Length =
m_RotationBuffer.Length =
m_ColorBuffer.Length =
m_DimensionBuffer.Length =
m_PositionBuffer.Length = PARTICLES_COUNT;
InitializeSystem ();
}
Simulate (DateTime.Now);
switch (PublishMethod){
case PublishMethod.AllAtOnce:
m_PositionBuffer.Publish ();
m_DimensionBuffer.Publish ();
m_ColorBuffer.Publish ();
m_RotationBuffer.Publish();
m_RotationLocalBuffer.Publish();
Publish (0, PARTICLES_COUNT);
break;
case PublishMethod.Incremental:
{
m_PublishCounter %= PARTICLES_COUNT;
var start = m_PublishCounter;
var end = Math.Min(start + PublishSize, PARTICLES_COUNT);
var cnt = end - start;
m_PositionBuffer.PublishPart (start, cnt);
m_DimensionBuffer.PublishPart (start, cnt);
m_ColorBuffer.PublishPart (start, cnt);
m_RotationBuffer.PublishPart (start, cnt);
m_RotationLocalBuffer.PublishPart (start, cnt);
Publish (start, cnt);
m_PublishCounter = end;
}
break;
default:
break;
}
return;
}
unsafe
{
m_PositionBuffer = new BufferObjectSegmented<Vector4> (sizeof(Vector4), 0) { Name = "position_buffer", Usage = BufferUsageHint.DynamicDraw };
m_DimensionBuffer = new BufferObjectSegmented<Vector4> (sizeof(Vector4), 0) { Name = "dimension_buffer", Usage = BufferUsageHint.DynamicDraw };
m_ColorBuffer = new BufferObjectSegmented<Vector4> (sizeof(Vector4), 0) { Name = "color_buffer", Usage = BufferUsageHint.DynamicDraw };
m_RotationBuffer = new BufferObjectSegmented<Matrix4> (sizeof(Matrix4), 0) { Name = "rotation_buffer", Usage = BufferUsageHint.DynamicDraw };
m_RotationLocalBuffer = new BufferObjectSegmented<Matrix4> (sizeof(Matrix4), 0) { Name = "rotation_local_buffer", Usage = BufferUsageHint.DynamicDraw };
}
ParticleStateArrayObject =
new ArrayObject (
new VertexAttribute { AttributeName = "sprite_pos", Buffer = m_PositionBuffer, Size = 3, Stride = 16, Type = VertexAttribPointerType.Float },
new VertexAttribute { AttributeName = "sprite_color", Buffer = m_ColorBuffer, Size = 3, Stride = 16, Type = VertexAttribPointerType.Float },
new VertexAttribute { AttributeName = "sprite_dimensions", Buffer = m_DimensionBuffer, Size = 3, Stride = 16, Type = VertexAttribPointerType.Float },
new VertexAttribute { AttributeName = "sprite_rotation_local", Buffer = m_RotationLocalBuffer, Size = 16, Stride = 64, Type = VertexAttribPointerType.Float },
new VertexAttribute { AttributeName = "sprite_rotation", Buffer = m_RotationBuffer, Size = 16, Stride = 64, Type = VertexAttribPointerType.Float }
);
//
PublishSize = 100000;
ModelScaleFactor = 1;
TransformationStack = new MatrixStack(2);
ProjectionStack = new MatrixStack(1);
CameraMvp = new ModelViewProjectionParameters("", TransformationStack, ProjectionStack);
//
m_Manip = new OrbitManipulator (ProjectionStack);
m_Grid = new Grid (CameraMvp);
TransformationStack[0] = m_Manip.RT;
TransformationStack.ValueStack[1] = Matrix4.Scale(ModelScaleFactor);
//
Uniforms = new UniformState
{
{"particle_scale_factor", () => this.ParticleScaleFactor},
{CameraMvp}
};
//
Shading = GlobalContext.Container.GetExportedValues<IShadingSetup>().FirstOrDefault();
PrepareStateCore();
m_Initialized = true;
PrepareState ();
}
protected override void PrepareStateCore()
{
unsafe
{
MetaBuffer = new BufferObjectSegmented<MetaInformation> (sizeof(MetaInformation), 0) { Name = "metadata_buffer", Usage = BufferUsageHint.DynamicDraw };
}
}
