public VertexBufferObject(bool isStatic, int numVertices, int vertexSize, VertexAttributes attrs)
{
this.hint = isStatic ? BufferUsageHint.StaticDraw : BufferUsageHint.DynamicDraw;
this.attributes = attrs;
vertices = new float[numVertices * vertexSize];
dirty = true;
this.numVertices = numVertices;
GL.GenBuffers(1, out bufferHandle);
}
public static Mesh generateTextureQuad()
{
VertexAttributes attrs = new VertexAttributes(VertexAttribute.Position(), VertexAttribute.TexCoords(0));
Mesh mesh = new Mesh(true, 4, 5, attrs);
mesh.setVerticies(ref quadTextureVerts);
mesh.setIndicies(ref quadTextureIndencies);
return(mesh);
}
public static Mesh screenQuad(ref Camera camera, int textureUnit)
{
VertexAttributes attrs = new VertexAttributes(VertexAttribute.Position(), VertexAttribute.TexCoords(textureUnit));
Mesh mesh = new Mesh(true, 4, 5, attrs);
Vector3 vec0 = Vector3.Zero;
camera.unproject(ref vec0);
Vector3 vec1 = new Vector3(Game.shared.width, Game.shared.height, 0);
camera.unproject(ref vec1);
mesh.setVertices(new float[] {
vec0.X, vec0.Y, 0, 0, 1,
vec1.X, vec0.Y, 0, 1, 1,
vec1.X, vec1.Y, 0, 1, 0,
vec0.X, vec1.Y, 0, 0, 0
});
mesh.setIndices(new uint[] { 0, 1, 2, 2, 3, 0 });
return(mesh);
}
public Mesh(bool isStatic, int numVertices, int vertexSize, VertexAttributes attrs)
{
verticies = new VertexBufferObject(isStatic, numVertices, vertexSize, attrs);
indicies = new IndexBufferObject(isStatic);
Game.glResources.Add(this);
}