private static Shader CompileFromShaders(IEnumerable <Step> shader_steps)
{
int id = GL.CreateProgram();
foreach (var shader in shader_steps)
{
GL.AttachShader(id, shader.ResourceID);
}
GL.LinkProgram(id);
foreach (var shader in shader_steps)
{
GL.DetachShader(id, shader.ResourceID);
}
string log = GL.GetProgramInfoLog(id);
if (!string.IsNullOrWhiteSpace(log))
{
throw new Exception(log);
}
var model_id = new ShaderMatrix(GL.GetUniformLocation(id, "model_matrix"));
int pos_id = GL.GetAttribLocation(id, "position");
int uv_id = GL.GetAttribLocation(id, "vertexUV");
int tex_id = GL.GetUniformLocation(id, "texture");
var proj_id = new ShaderMatrix(GL.GetUniformLocation(id, "projection"));
int z_id = GL.GetUniformLocation(id, "z");
var view_id = new ShaderMatrix(GL.GetUniformLocation(id, "view"));
var music = new ShaderFloat(GL.GetUniformLocation(id, "music"));
var uvo = new ShaderMatrix(GL.GetUniformLocation(id, "uv_at"));
return(new Shader(id, model_id, tex_id, pos_id, uv_id, proj_id, z_id, view_id, music, uvo));
}
public Shader(int shader_id,
ShaderMatrix model_mat,
int texture_location,
int vertex_location,
int uv_location,
ShaderMatrix proj,
int z_location,
ShaderMatrix view,
ShaderFloat music,
ShaderMatrix uv_offset)
{
ShaderID = shader_id;
Model = model_mat;
TextureLocation = texture_location;
VertexLocation = vertex_location;
UVLocation = uv_location;
Projection = proj;
ZLocation = z_location;
View = view;
Music = music;
UVOffset = uv_offset;
}
/// <summary>
/// Bind matrix to shader matrix
/// </summary>
/// <param name="nameInShader"></param>
/// <param name="matrix"></param>
public void SetMatrix4(ShaderMatrix nameInShader, ref Matrix4 matrix)
{
int location = GL.GetUniformLocation(Handle, nameInShader.ToString());
GL.UniformMatrix4(location, true, ref matrix);
}
