public void Draw()
{
Vertex2f[] vertices = new Vertex2f[] {
new Vertex2f(0.0f, 0.0f),
new Vertex2f(1.0f, 0.0f),
new Vertex2f(1.0f, 1.0f),
new Vertex2f(0.0f, 1.0f),
};
using (VertexArrayObject vao = new VertexArrayObject()) {
// Setup ABO (Position)
ArrayBufferObject abo = new ArrayBufferObject(VertexBaseType.Float, 2, BufferObjectHint.StaticCpuDraw);
abo.Create(vertices);
// Setup VAO
vao.SetArray(abo, VertexArraySemantic.Position);
vao.SetElementArray(PrimitiveType.TriangleStrip);
vao.Create(_Context);
using (State.GraphicsStateSet currentState = State.GraphicsStateSet.GetDefaultSet()) {
// Set transform state
State.TransformStateBase stateTransform = (State.TransformStateBase)currentState[State.TransformStateBase.StateId];
// Set normalized orthogonal projection
stateTransform.LocalProjection = new OrthoProjectionMatrix(0.0f, 1.0f, 0.0f, 1.0f);
// Apply state
currentState.Apply(_Context);
// Draw
Assert.DoesNotThrow(delegate() { vao.Draw(_Context); });
}
}
}
internal IEnumerable <SceneObjectBatch> GetGeometries(State.GraphicsStateSet currentState)
{
if (_GeometryInstances.Count > 0)
{
foreach (Geometry sceneObjectBatch in _GeometryInstances)
{
State.GraphicsStateSet geometryState;
if (sceneObjectBatch.State != null)
{
geometryState = currentState.Push();
geometryState.Merge(sceneObjectBatch.State);
}
else
{
geometryState = currentState;
}
yield return(new SceneObjectBatch(
sceneObjectBatch.VertexArray ?? VertexArray,
geometryState,
sceneObjectBatch.Program ?? Program
));
}
}
else
{
yield return(new SceneObjectBatch(VertexArray, currentState, Program));
}
}
internal SceneObjectBatch(State.GraphicsStateSet state)
{
if (state == null)
{
throw new ArgumentNullException("state");
}
State = state;
}
/// <summary>
/// Construct an Geometry.
/// </summary>
/// <param name="vertexArray">
///
/// </param>
/// <param name="state"></param>
/// <param name="program"></param>
public Geometry(VertexArrays vertexArray, State.GraphicsStateSet state, ShaderProgram program) :
base(vertexArray, state, program)
{
vertexArray.IncRef();
if (program != null)
{
program.IncRef();
}
}
/// <summary>
/// Construct an SceneObjectBatch.
/// </summary>
/// <param name="vertexArray">
///
/// </param>
/// <param name="state"></param>
/// <param name="program"></param>
public SceneObjectBatch(VertexArrays vertexArray, State.GraphicsStateSet state, ShaderProgram program)
{
if (vertexArray == null)
{
throw new ArgumentNullException("vertexArray");
}
if (state == null)
{
throw new ArgumentNullException("state");
}
Program = program; // It may be null to support fixed pipeline
VertexArray = vertexArray;
State = state;
}
internal IEnumerable <SceneObjectBatch> GetGeometries(State.GraphicsStateSet currentState, IEnumerable <Plane> clippingPlanes, IMatrix4x4 viewModel)
{
if (_GeometryInstances.Count > 0)
{
foreach (Geometry sceneObjectBatch in _GeometryInstances)
{
IBoundingVolume instanceVolume = sceneObjectBatch.BoundingVolume ?? _BoundingVolume;
if (instanceVolume != null && instanceVolume.IsClipped(clippingPlanes, viewModel))
{
continue;
}
State.GraphicsStateSet geometryState;
if (sceneObjectBatch.State != null)
{
geometryState = currentState.Push();
geometryState.Merge(sceneObjectBatch.State);
}
else
{
geometryState = currentState;
}
yield return(new SceneObjectBatch(
sceneObjectBatch.VertexArray ?? VertexArray,
geometryState,
sceneObjectBatch.Program ?? Program
));
}
}
else
{
if (_BoundingVolume != null && _BoundingVolume.IsClipped(clippingPlanes, viewModel))
{
yield break;
}
yield return(new SceneObjectBatch(VertexArray, currentState, Program));
}
}
public void AddGeometry(State.GraphicsStateSet state)
{
_GeometryInstances.Add(new Geometry(state));
}
public void AddGeometry(VertexArrays vertexArray, State.GraphicsStateSet state)
{
_GeometryInstances.Add(new Geometry(vertexArray, state, null));
}
public Geometry(State.GraphicsStateSet state) :
base(state)
{
}
/// <summary>
/// Construct an Geometry.
/// </summary>
/// <param name="vertexArray">
///
/// </param>
/// <param name="state"></param>
/// <param name="program"></param>
public Geometry(VertexArrayObject vertexArray, State.GraphicsStateSet state, ShaderProgram program) :
base(vertexArray, state, program)
{
}
