Shader.cpp
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1 #include "Shader.hpp"
2 
3 #include <ivorium_core/ivorium_core.hpp>
4 #include <ivorium_systems/ivorium_systems.hpp>
5 
6 namespace iv
7 {
8 
9 Shader::Shader( Instance * inst, ResourcePath const & path ) :
10  cm( inst, this, "Shader", ClientMarker::Status() ),
11  inst( inst ),
12  _src_path( path ),
13  _gl_program()
14 {
15 }
16 
17 Shader::~Shader()
18 {
19  this->_gl_program.DropProgram( &this->cm );
20 }
21 
22 Instance * Shader::instance() const
23 {
24  return this->inst;
25 }
26 
27 void Shader::status( iv::TableDebugView * view )
28 {
29  static iv::TableId DebugTable = TableId::create( "Shader" );
30 
31  auto row = view->Table( DebugTable ).Row( this );
32 
33  row.Column( "filename", this->_src_path );
34 }
35 
36 void Shader::LoadProgram()
37 {
38  ResourcePath vert_path = this->_src_path + ".gl.vert";
39  ResourcePath frag_path = this->_src_path + ".gl.frag";
40 
41  this->_gl_program.CreateProgram( &this->cm );
42 
43  DataStream_Resource vert_data( this->instance(), vert_path );
44  vert_data->with_stream(
45  [&]( std::istream & in )
46  {
47  this->_gl_program.Load_VertexShader( &this->cm, in );
48  }
49  );
50 
51  DataStream_Resource frag_data( this->instance(), frag_path );
52  frag_data->with_stream(
53  [&]( std::istream & in )
54  {
55  this->_gl_program.Load_FragmentShader( &this->cm, in );
56  }
57  );
58 }
59 
60 void Shader::BindAttribute( GLuint location, const char * attrib_name )
61 {
62  this->_gl_program.BindAttribute( &this->cm, location, attrib_name );
63 }
64 
65 void Shader::PositionAttributeName( const char * name )
66 {
67  this->_gl_program.PositionAttributeName( &this->cm, name );
68 }
69 
70 void Shader::LinkProgram()
71 {
72  this->_gl_program.LinkProgram( &this->cm );
73 }
74 
75 void Shader::UnloadProgram()
76 {
77  this->_gl_program.DestroyProgram( &this->cm );
78 }
79 
80 void Shader::DropProgram()
81 {
82  this->_gl_program.DropProgram( &this->cm );
83 }
84 
85 GLint Shader::GetUniformLocation( const char * name ) const
86 {
87  auto result = this->_gl_program.GetUniformLocation( name );
88  if( result == (GLint)-1 )
89  this->cm.warning( SRC_INFO, "Uniform '", name, "' not found." );
90  return result;
91 }
92 
93 GlProgram const * Shader::gl_program() const
94 {
95  return &this->_gl_program;
96 }
97 
98 }