public bool ReadData(int offset, int length, Vertex[] data)
{
if (_useVbo == VBOType.Core) {
GL.BindBuffer (BufferTarget.ArrayBuffer, _vbo);
GL.GetBufferSubData<Vertex> (BufferTarget.ArrayBuffer, new IntPtr (offset), new IntPtr (length), data);
} else if (_useVbo == VBOType.ARB) {
GL.Arb.BindBuffer (BufferTargetArb.ArrayBuffer, _vbo);
GL.Arb.GetBufferSubData<Vertex> (BufferTargetArb.ArrayBuffer, new IntPtr (offset), new IntPtr (length), data);
} else {
for (int i = 0; i < _vertices.Length; i++) {
// slow
data[i] = _vertices[i];
}
}
return true;
}
public void WriteData(int offset, int length, Vertex[] data)
{
if (_useVbo == VBOType.Core) {
GL.BindBuffer (BufferTarget.ArrayBuffer, _vbo);
if (offset == 0 && length == data.Length)
{
BufferUsageHint buh = BufferUsageHint.StaticDraw;
if (_usage == BufferUsage.DYNAMIC)
buh = BufferUsageHint.DynamicDraw;
GL.BufferData<Vertex> (BufferTarget.ArrayBuffer, new IntPtr (length), data, buh);
} else {
GL.BufferSubData<Vertex> (BufferTarget.ArrayBuffer, new IntPtr (offset), new IntPtr (length), data);
}
} else if (_useVbo == VBOType.ARB) {
GL.Arb.BindBuffer (BufferTargetArb.ArrayBuffer, _vbo);
if (offset == 0 && length == data.Length)
{
BufferUsageArb buh = BufferUsageArb.StaticDraw;
if (_usage == BufferUsage.DYNAMIC)
buh = BufferUsageArb.DynamicDraw;
GL.Arb.BufferData<Vertex> (BufferTargetArb.ArrayBuffer, new IntPtr (length), data, buh);
} else {
GL.Arb.BufferSubData<Vertex> (BufferTargetArb.ArrayBuffer, new IntPtr (offset), new IntPtr (length), data);
}
} else {
for (int i = 0; i < _vertices.Length; i++) {
// slow
_vertices[i] = data[i];
}
}
}
// readonly CSGL.VertexBuffer VB;
public Primitive(primitive_element PElement)
{
switch(PElement.GetType().Name)
{
case "triangles":
DM = DrawMode.Triangles;
break;
case "trifans":
DM = DrawMode.TriangleFan;
break;
case "tristrips":
DM = DrawMode.TriangleStrip;
break;
case "lines":
DM = DrawMode.Lines;
break;
case "lineStrip":
DM = DrawMode.LineStrip;
break;
default:
throw new NotImplementedException();
}
////////////////////////////////////////////////////////////////
int Length = PElement.P.GetLength(1);
// float[][] Data = new float[PElement.Inputs.Count][];
Vertex[] Data = new Vertex[PElement.Inputs.Count];
/*
CSGL.VertexBuffer Vertex = null;
CSGL.NormalBuffer Normal = null;
CSGL.TexCoordBuffer TexCoord = null;
*/
int i = 0;
foreach(input S in PElement.Inputs)
{
uint Stride = ((source)S).Accessor.Stride;
Data[i] = new float[Length * Stride];
source Src = ((source)S);
float[] ArrayData = Src.Array.Values as float[];
int j = 0;
while(j < Length)
{
uint DI = PElement.P[i,j] * Stride;
int k = 0;
while(k < Stride)
{
Data[i][(j * Stride) + k] = ArrayData[DI + k];
k++;
}
j++;
}
switch(S.Semantic)
{
case "VERTEX":
Vertex = new CSGL.VertexBuffer(gl,Stride,Data[i],Usage.StaticDraw);
break;
case "NORMAL":
Normal = new CSGL.NormalBuffer(gl,Data[i],Usage.StaticDraw);
break;
case "TEXCOORD":
TexCoord = new CSGL.TexCoordBuffer(gl,Stride,Data[i],Usage.StaticDraw);
break;
default:
throw new NotImplementedException();
}
i++;
}
VB = Vertex;
VB.Normal = Normal;
VB.TexCoord = TexCoord;
}
