public static VBO Create(int position_dimensions, VertexAttributes attribs)
{
VBO v = new VBO();
GL.GenBuffers(1, out v.PositionArrayBufferID);
GL.GenBuffers(1, out v.OtherArrayBufferID);
GL.GenBuffers(1, out v.ElementArrayBufferID);
v.PositionDimensions = position_dimensions;
v.VertexAttribs = attribs;
return(v);
}
public static VertexAttributes Create(params int[] counts) //makes zeroed arrays in the given counts.
{
VertexAttributes v = new VertexAttributes();
int count = counts.GetLength(0);
v.Defaults = new float[count][];
v.Size = new int[count];
v.TotalSize = 0;
int idx = 0;
foreach (int i in counts)
{
v.Defaults[idx] = new float[i]; //todo: this method needs a note: which attribs are assumed to be here already? if you Create(2), is that texcoords? and what?
v.Size[idx] = i;
v.TotalSize += i;
++idx;
}
return(v);
}
public static VertexAttributes Create(params float[][] defaults)
{
VertexAttributes v = new VertexAttributes();
int count = defaults.GetLength(0);
v.Defaults = new float[count][];
v.Size = new int[count];
v.TotalSize = 0;
int idx = 0;
foreach (float[] f in defaults)
{
v.Defaults[idx] = f;
v.Size[idx] = f.GetLength(0);
v.TotalSize += v.Size[idx];
++idx;
}
return(v);
}
///<param name="filename">Note that filename is required even if passing a byte[], because filename is used as the key to identify duplicate textures</param>
///<param name="source">Whether to load the texture from file path, from an embedded resource in the entry assembly, or from 'textureBytes'</param>
///<param name="textureBytes">Used only if source == TextureLoadSource.FromByteArray</param>
public static Surface Create(GLWindow window, string texture_filename, TextureMinFilter minFilter, TextureMagFilter magFilter,
TextureLoadSource source, byte[] textureBytes, string frag_shader, bool has_depth, params int[] vertex_attrib_counts)
{
Surface s = new Surface();
s.window = window;
int dims = has_depth? 3 : 2;
s.UseDepthBuffer = has_depth;
VertexAttributes attribs = VertexAttributes.Create(vertex_attrib_counts);
s.vbo = VBO.Create(dims, attribs);
s.texture = Texture.Create(texture_filename, null, minFilter, magFilter, source, textureBytes);
s.shader = Shader.Create(frag_shader);
if (window != null)
{
window.Surfaces.Add(s);
}
return(s);
}