public GLVertexArrayObject(int handle, GLProgram program, GLBuffer vertexBuffer, GLBuffer indexBuffer)
{
Handle = handle;
Program = program;
VertexBuffer = vertexBuffer;
IndexBuffer = indexBuffer;
}
public GLVertexArrayObject GetVAO(GLBuffer vertexBuffer, GLBuffer indexBuffer)
{
int vaoHandle = GL.GenVertexArray();
GL.BindVertexArray(vaoHandle);
GL.BindBuffer(BufferTarget.ArrayBuffer, vertexBuffer.Handle);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, indexBuffer.Handle);
var stride = Signature.Attributes.Sum(e => e.SizeInBytes());
var attributeOffset = 0;
for (int i = 0; i < Signature.Attributes.Length; i++)
{
var attribute = Signature.Attributes[i];
GL.VertexAttribPointer(attribute.Location, attribute.GetComponentCount(), attribute.GetComponentType(),
false, stride, attributeOffset);
GL.EnableVertexAttribArray(attribute.Location);
GL.BindAttribLocation(Handle, attribute.Location, attribute.Name);
attributeOffset += attribute.SizeInBytes();
}
GL.BindVertexArray(0);
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
return new GLVertexArrayObject(vaoHandle, this, vertexBuffer, indexBuffer);
}
public VectorMesh(GLBuffer vertexBuffer, GLBuffer indexBuffer, int indexCount)
{
VertexBuffer = vertexBuffer;
IndexBuffer = indexBuffer;
IndexCount = indexCount;
}
public SpriteBatchBuffer(GLBuffer vertexBuffer, GLBuffer indexBuffer, uint indexCount)
{
VertexBuffer = vertexBuffer;
IndexBuffer = indexBuffer;
IndexCount = indexCount;
}