void createVb(ref int count, BarGeo geo)
{
VertexBuffer vb = new VertexBuffer(GraphicsDevice, instanceVertDecl, count, BufferUsage.WriteOnly);
vb.SetData(instanceVerts, 0, count);
geo.instanceBindingList.Add(new VertexBufferBinding(vb, 0, 1));
count = 0;
}
public override void createGeoChunk(out Geo geo, BoundingBox bbox, Midi.Track midiTrack, TrackProps trackProps, MaterialProps texMaterial)
{
BarGeo barGeo = new BarGeo();
geo = barGeo;
List <Midi.Note> noteList = midiTrack.Notes;
if (noteList.Count == 0)
{
return;
}
float halfNoteHeight = Project.Props.NoteHeight / 2;
int instanceIndex = 0;
for (int n = 0; n < noteList.Count; n++)
{
Midi.Note note = noteList[n];
if (note.start > Project.Notes.SongLengthT) //only if audio ends before the notes end
{
continue;
}
Vector2 noteStart = Project.getScreenPos(note.start, note.pitch);
Vector2 noteEnd = Project.getScreenPos(note.stop, note.pitch);
//Create bounding boxes
Vector3 boxMin = new Vector3(noteStart.X, noteStart.Y - halfNoteHeight, 0);
Vector3 boxMax = new Vector3(noteEnd.X, noteEnd.Y + halfNoteHeight, 0);
geo.bboxes.Add(new BoundingBoxEx(boxMin, boxMax));
//Create inctance data
Vector2 topLeft_world = new Vector2(noteStart.X, noteStart.Y - halfNoteHeight);
Vector2 size_world = new Vector2(noteEnd.X - noteStart.X, halfNoteHeight * 2 - 0.001f);
Vector2 topLeft_tex = topLeft_world;
Vector2 size_tex = size_world;
Texture2D texture = texMaterial.TexProps.Texture;
if (texture != null)
{
Vector2 texSize = new Vector2(texture.Width, texture.Height);
calcRectTexCoords(out topLeft_tex, out size_tex, texSize, topLeft_world, size_world, texMaterial);
}
instanceVerts[instanceIndex].destRect = new Vector4(topLeft_world.X, topLeft_world.Y, size_world.X, size_world.Y);
instanceVerts[instanceIndex].srcRect = new Vector4(topLeft_tex.X, topLeft_tex.Y, size_tex.X, size_tex.Y);
if (++instanceIndex >= MaxInstances - 1)
{
createVb(ref instanceIndex, barGeo);
}
}
if (instanceIndex > 0)
{
createVb(ref instanceIndex, barGeo);
}
}
public override void drawGeoChunk(Geo geo)
{
BarGeo barGeo = (BarGeo)geo;
GraphicsDevice.Indices = indexBuf;
fx.CurrentTechnique = fx.Techniques["Technique1"];
fx.CurrentTechnique.Passes["Pass1"].Apply();
foreach (var instanceBinding in barGeo.instanceBindingList)
{
GraphicsDevice.SetVertexBuffers(meshBinding, instanceBinding);
GraphicsDevice.DrawInstancedPrimitives(PrimitiveType.TriangleStrip, 0, 0, 2, instanceBinding.VertexBuffer.VertexCount);
}
}
