// Note that buffer capacity is given in bytes while index capacity is given in unsigned shorts.
public unsafe PrimitiveBuffer(BufferFrequencies frequency, BufferUsages usage, uint bufferCapacity = 0,
uint indexCapacity = 0)
{
this.usage = (uint)frequency + (uint)usage;
GLUtilities.GenerateBuffers(out bufferId, out indexId);
buffer = new byte[bufferCapacity];
indexBuffer = new ushort[indexCapacity];
maxIndex = -1;
if (bufferCapacity > 0)
{
allocatedBufferCapacity = bufferCapacity;
glBindBuffer(GL_ARRAY_BUFFER, bufferId);
glBufferData(GL_ARRAY_BUFFER, bufferCapacity, (void *)0, this.usage);
}
if (indexCapacity > 0)
{
allocatedIndexCapacity = sizeof(ushort) * indexCapacity;
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexId);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, allocatedIndexCapacity, (void *)0, this.usage);
}
}
public PrimitiveBuffer(BufferFrequencies frequency, BufferUsages usage, out uint bufferId,
out uint indexId, uint bufferCapacity = 0, uint indexCapacity = 0) :
this(frequency, usage, bufferCapacity, indexCapacity)
{
bufferId = this.bufferId;
indexId = this.indexId;
}
