[319] | 1 | // Copyright (C) 2012-2014 ChaosForge Ltd
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[38] | 2 | // This file is part of NV Libraries.
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| 3 | // For conditions of distribution and use, see copyright notice in nv.hh
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| 4 |
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| 5 | #include "nv/gl/gl_device.hh"
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| 6 |
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| 7 | #include "nv/gl/gl_window.hh"
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[319] | 8 | #include "nv/core/logging.hh"
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[90] | 9 | #include "nv/lib/sdl_image.hh"
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[301] | 10 | #include "nv/gl/gl_enum.hh"
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| 11 | #include "nv/lib/gl.hh"
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[38] | 12 |
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| 13 | using namespace nv;
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| 14 |
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| 15 | gl_device::gl_device()
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| 16 | {
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[316] | 17 | m_shader_header = "#version 120\n";
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| 18 | for ( auto& i : get_uniform_factory() )
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| 19 | m_shader_header += "uniform "+datatype_to_glsl_type( i.second->get_datatype() )+" "+i.first+";\n";
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| 20 | for ( auto& i : get_link_uniform_factory() )
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| 21 | m_shader_header += "uniform sampler2D "+i.first+";\n";
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[38] | 22 | }
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| 23 |
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[303] | 24 | program gl_device::create_program( const string& vs_source, const string& fs_source )
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[38] | 25 | {
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[303] | 26 | program result = m_programs.create();
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| 27 | gl_program_info* info = m_programs.get( result );
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| 28 |
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| 29 | info->glid = glCreateProgram();
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| 30 | compile( info, vs_source, fs_source );
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| 31 | prepare_program( result );
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| 32 | return result;
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[38] | 33 | }
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| 34 |
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[90] | 35 | // this is a temporary function that will be removed once we find a way to
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| 36 | // pass binary file data around
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[326] | 37 | image_data* gl_device::create_image_data( const std::string& filename )
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[90] | 38 | {
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| 39 | load_sdl_image_library();
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| 40 | SDL_Surface* image = IMG_Load( filename.c_str() );
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[120] | 41 | if (!image)
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| 42 | {
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| 43 | NV_LOG( LOG_ERROR, "Image file " << filename.c_str() << " not found!" );
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| 44 | return nullptr;
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| 45 | }
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[292] | 46 | // TODO: BGR vs RGB, single channel
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| 47 | assert( image->format->BytesPerPixel > 2 );
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| 48 | image_format format(image->format->BytesPerPixel == 3 ? RGB : RGBA, UBYTE );
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| 49 | image_data* data = new image_data( format, glm::ivec2( image->w, image->h ), (nv::uint8*)image->pixels );
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[90] | 50 | return data;
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| 51 | }
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| 52 |
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[92] | 53 |
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[38] | 54 | gl_device::~gl_device()
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| 55 | {
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[302] | 56 | while ( m_textures.size() > 0 )
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| 57 | release( m_textures.get_handle(0) );
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| 58 | while ( m_buffers.size() > 0 )
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| 59 | release( m_buffers.get_handle(0) );
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[303] | 60 | while ( m_programs.size() > 0 )
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| 61 | release( m_programs.get_handle(0) );
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[38] | 62 | }
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[301] | 63 |
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| 64 | nv::texture nv::gl_device::create_texture( ivec2 size, image_format aformat, sampler asampler, void* data /*= nullptr */ )
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| 65 | {
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| 66 | unsigned glid = 0;
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| 67 | glGenTextures( 1, &glid );
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| 68 |
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| 69 | glBindTexture( GL_TEXTURE_2D, glid );
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| 70 |
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| 71 | // Detect if mipmapping was requested
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| 72 | if (( asampler.filter_min != sampler::LINEAR && asampler.filter_min != sampler::NEAREST ) ||
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| 73 | ( asampler.filter_max != sampler::LINEAR && asampler.filter_max != sampler::NEAREST ))
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| 74 | {
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| 75 | glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
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| 76 | }
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| 77 |
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| 78 | glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, (int)nv::sampler_filter_to_enum( asampler.filter_min ) );
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| 79 | glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, (int)nv::sampler_filter_to_enum( asampler.filter_max ) );
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| 80 | glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, (int)nv::sampler_wrap_to_enum( asampler.wrap_s) );
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| 81 | glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, (int)nv::sampler_wrap_to_enum( asampler.wrap_t) );
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| 82 |
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| 83 | if (data)
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| 84 | {
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| 85 | glTexImage2D( GL_TEXTURE_2D, 0, (GLint)nv::image_format_to_enum(aformat.format), size.x, size.y, 0, nv::image_format_to_enum(aformat.format), nv::datatype_to_gl_enum(aformat.type), data );
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| 86 | }
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| 87 |
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| 88 | glBindTexture( GL_TEXTURE_2D, 0 );
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| 89 |
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| 90 | texture result = m_textures.create();
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| 91 | gl_texture_info* info = m_textures.get( result );
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[323] | 92 | info->format = aformat;
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| 93 | info->tsampler = asampler;
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| 94 | info->size = size;
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| 95 | info->glid = glid;
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[301] | 96 | return result;
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| 97 | }
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| 98 |
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[302] | 99 | void nv::gl_device::release( texture t )
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[301] | 100 | {
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| 101 | gl_texture_info* info = m_textures.get( t );
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| 102 | if ( info )
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| 103 | {
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[302] | 104 | if ( info->glid != 0 )
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| 105 | {
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| 106 | glDeleteTextures( 1, &(info->glid) );
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| 107 | }
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[301] | 108 | m_textures.destroy( t );
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| 109 | }
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| 110 | }
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| 111 |
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[302] | 112 | void nv::gl_device::release( buffer b )
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| 113 | {
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| 114 | gl_buffer_info* info = m_buffers.get( b );
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| 115 | if ( info )
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| 116 | {
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| 117 | if ( info->glid != 0 )
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| 118 | {
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| 119 | glDeleteBuffers( 1, &(info->glid) );
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| 120 | }
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| 121 | m_buffers.destroy( b );
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| 122 | }
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| 123 | }
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| 124 |
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[303] | 125 | const texture_info* nv::gl_device::get_texture_info( texture t ) const
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[301] | 126 | {
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| 127 | return m_textures.get( t );
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| 128 | }
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| 129 |
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[302] | 130 | nv::buffer nv::gl_device::create_buffer( buffer_type type, buffer_hint hint, size_t size, const void* source /*= nullptr */ )
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| 131 | {
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| 132 | unsigned glid = 0;
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| 133 | unsigned glenum = buffer_type_to_enum( type );
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| 134 | glGenBuffers( 1, &glid );
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| 135 |
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| 136 | glBindBuffer( glenum, glid );
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| 137 | glBufferData( glenum, (GLsizeiptr)size, source, buffer_hint_to_enum( hint ) );
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| 138 | glBindBuffer( glenum, 0 );
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| 139 |
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| 140 | buffer result = m_buffers.create();
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| 141 | gl_buffer_info* info = m_buffers.get( result );
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| 142 | info->type = type;
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| 143 | info->hint = hint;
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| 144 | info->size = size;
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| 145 | info->glid = glid;
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| 146 | return result;
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| 147 | }
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| 148 |
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[303] | 149 | const buffer_info* nv::gl_device::get_buffer_info( buffer t ) const
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[302] | 150 | {
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| 151 | return m_buffers.get( t );
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| 152 | }
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[303] | 153 |
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| 154 | void nv::gl_device::release( program p )
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| 155 | {
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| 156 | gl_program_info* info = m_programs.get( p );
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| 157 | if ( info )
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| 158 | {
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| 159 | for ( auto& i : info->m_uniform_map )
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| 160 | delete i.second;
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| 161 |
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| 162 | glDetachShader( info->glid, info->glidv );
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| 163 | glDetachShader( info->glid, info->glidf );
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| 164 | glDeleteShader( info->glidv );
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| 165 | glDeleteShader( info->glidf );
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| 166 | glDeleteProgram( info->glid );
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| 167 |
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| 168 | m_programs.destroy( p );
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| 169 | }
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| 170 | }
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| 171 |
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| 172 | void nv::gl_device::prepare_program( program p )
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| 173 | {
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| 174 | gl_program_info* info = m_programs.get( p );
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| 175 | if ( info )
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| 176 | {
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| 177 | auto& map = get_uniform_factory();
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| 178 | auto& lmap = get_link_uniform_factory();
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| 179 |
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| 180 | for ( auto& i : info->m_uniform_map )
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| 181 | {
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| 182 | auto j = lmap.find( i.first );
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| 183 | if ( j != lmap.end() )
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| 184 | {
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| 185 | j->second->set( i.second );
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| 186 | }
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| 187 |
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| 188 | auto k = map.find( i.first );
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| 189 | if ( k != map.end() )
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| 190 | {
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| 191 | info->m_engine_uniforms.push_back( k->second->create( i.second ) );
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| 192 | }
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| 193 | }
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| 194 | }
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| 195 | }
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| 196 |
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| 197 | uniform_base* nv::gl_device::get_uniform( program p, const string& name, bool fatal /*= true */ ) const
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| 198 | {
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| 199 | const gl_program_info* info = m_programs.get( p );
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| 200 | {
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| 201 | uniform_map::const_iterator i = info->m_uniform_map.find( name );
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| 202 | if ( i != info->m_uniform_map.end() )
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| 203 | {
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| 204 | return i->second;
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| 205 | }
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| 206 | if ( fatal )
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| 207 | {
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| 208 | NV_LOG( LOG_ERROR, "Uniform '" << name << "' not found in program!" );
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| 209 | NV_THROW( runtime_error, ( "Uniform '"+name+"' not found!" ) );
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| 210 | }
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| 211 | }
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| 212 | return nullptr;
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| 213 | }
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| 214 |
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| 215 | int nv::gl_device::get_attribute_location( program p, const string& name, bool fatal /*= true */ ) const
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| 216 | {
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| 217 | const gl_program_info* info = m_programs.get( p );
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| 218 | if ( info )
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| 219 | {
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| 220 | attribute_map::const_iterator i = info->m_attribute_map.find( name );
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| 221 | if ( i != info->m_attribute_map.end() )
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| 222 | {
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| 223 | return i->second.location;
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| 224 | }
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| 225 | if ( fatal )
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| 226 | {
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| 227 | NV_LOG( LOG_ERROR, "Attribute '" << name << "' not found in program!" );
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| 228 | NV_THROW( runtime_error, ( "Attribute '"+name+"' not found!" ) );
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| 229 | }
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| 230 | }
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| 231 | return -1;
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| 232 | }
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| 233 |
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| 234 | bool nv::gl_device::compile( gl_program_info* p, const string& vertex_program, const string& fragment_program )
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| 235 | {
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| 236 | if (!compile( GL_VERTEX_SHADER, vertex_program, p->glidv )) { return false; }
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| 237 | if (!compile( GL_FRAGMENT_SHADER, fragment_program, p->glidf )) { return false; }
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| 238 |
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| 239 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::POSITION ), "nv_position" );
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| 240 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::TEXCOORD ), "nv_texcoord" );
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| 241 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::NORMAL ), "nv_normal" );
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| 242 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::COLOR ), "nv_color" );
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| 243 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::TANGENT ), "nv_tangent" );
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| 244 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::BONEINDEX ), "nv_boneindex" );
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| 245 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::BONEWEIGHT ), "nv_boneweight");
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| 246 |
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| 247 | glAttachShader( p->glid, p->glidf );
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| 248 | glAttachShader( p->glid, p->glidv );
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| 249 | glLinkProgram( p->glid );
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| 250 |
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| 251 | const uint32 buffer_size = 2048;
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| 252 | char buffer[ buffer_size ] = { 0 };
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| 253 | int length;
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| 254 | int status;
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| 255 |
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| 256 | glGetProgramiv( p->glid, GL_LINK_STATUS, &status );
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| 257 | glGetProgramInfoLog( p->glid, buffer_size, &length, buffer );
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| 258 |
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| 259 | NV_LOG( LOG_INFO, "Program #" << p->glid << (status == GL_FALSE ? " failed to compile!" : " compiled successfully.") );
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| 260 |
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| 261 | if ( length > 0 )
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| 262 | {
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| 263 | NV_LOG( LOG_INFO, "Program #" << p->glid << " log: " << buffer );
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| 264 | }
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| 265 |
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| 266 | if ( status == GL_FALSE )
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| 267 | {
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| 268 | return false;
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| 269 | }
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| 270 |
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| 271 | glValidateProgram( p->glid );
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| 272 | glGetProgramiv( p->glid, GL_VALIDATE_STATUS, &status );
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| 273 |
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| 274 | if ( status == GL_FALSE )
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| 275 | {
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| 276 | glGetProgramInfoLog( p->glid, buffer_size, &length, buffer );
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| 277 | NV_LOG( LOG_ERROR, "Program #" << p->glid << " validation error : " << buffer );
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| 278 | return false;
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| 279 | }
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| 280 | load_attributes( p );
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| 281 | load_uniforms( p );
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| 282 | return true;
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| 283 | }
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| 284 |
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| 285 | void nv::gl_device::update_uniforms( gl_program_info* p )
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| 286 | {
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| 287 | for ( uniform_map::iterator i = p->m_uniform_map.begin(); i != p->m_uniform_map.end(); ++i )
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| 288 | {
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| 289 | uniform_base* ubase = i->second;
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| 290 | if ( ubase->is_dirty() )
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| 291 | {
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| 292 | int uloc = ubase->get_location();
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| 293 | switch( ubase->get_type() )
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| 294 | {
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| 295 | case FLOAT : glUniform1fv( uloc, ubase->get_length(), ((uniform< enum_to_type< FLOAT >::type >*)( ubase ))->get_value() ); break;
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| 296 | case INT : glUniform1iv( uloc, ubase->get_length(), ((uniform< enum_to_type< INT >::type >*)( ubase ))->get_value() ); break;
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| 297 | case FLOAT_VECTOR_2 : glUniform2fv( uloc, ubase->get_length(), (GLfloat*)((uniform< enum_to_type< FLOAT_VECTOR_2 >::type >*)( ubase ))->get_value()); break;
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| 298 | case FLOAT_VECTOR_3 : glUniform3fv( uloc, ubase->get_length(), (GLfloat*)((uniform< enum_to_type< FLOAT_VECTOR_3 >::type >*)( ubase ))->get_value()); break;
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| 299 | case FLOAT_VECTOR_4 : glUniform4fv( uloc, ubase->get_length(), (GLfloat*)((uniform< enum_to_type< FLOAT_VECTOR_4 >::type >*)( ubase ))->get_value()); break;
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| 300 | case INT_VECTOR_2 : glUniform2iv( uloc, ubase->get_length(), (GLint*)((uniform< enum_to_type< INT_VECTOR_2 >::type >*)( ubase ))->get_value()); break;
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| 301 | case INT_VECTOR_3 : glUniform3iv( uloc, ubase->get_length(), (GLint*)((uniform< enum_to_type< INT_VECTOR_3 >::type >*)( ubase ))->get_value()); break;
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| 302 | case INT_VECTOR_4 : glUniform4iv( uloc, ubase->get_length(), (GLint*)((uniform< enum_to_type< INT_VECTOR_4 >::type >*)( ubase ))->get_value()); break;
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| 303 | case FLOAT_MATRIX_2 : glUniformMatrix2fv( uloc, ubase->get_length(), GL_FALSE, (GLfloat*)((uniform< enum_to_type< FLOAT_MATRIX_2 >::type >*)( ubase ))->get_value()); break;
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| 304 | case FLOAT_MATRIX_3 : glUniformMatrix3fv( uloc, ubase->get_length(), GL_FALSE, (GLfloat*)((uniform< enum_to_type< FLOAT_MATRIX_3 >::type >*)( ubase ))->get_value()); break;
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| 305 | case FLOAT_MATRIX_4 : glUniformMatrix4fv( uloc, ubase->get_length(), GL_FALSE, (GLfloat*)((uniform< enum_to_type< FLOAT_MATRIX_4 >::type >*)( ubase ))->get_value()); break;
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| 306 | default : break; // error?
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| 307 | }
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| 308 | ubase->clean();
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| 309 | }
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| 310 | }
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| 311 | }
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| 312 |
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| 313 | void nv::gl_device::load_attributes( gl_program_info* p )
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| 314 | {
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| 315 | int params;
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| 316 | glGetProgramiv( p->glid, GL_ACTIVE_ATTRIBUTES, ¶ms );
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| 317 |
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| 318 | for ( unsigned i = 0; i < (unsigned)params; ++i )
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| 319 | {
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| 320 | int attr_nlen;
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| 321 | int attr_len;
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| 322 | unsigned attr_type;
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| 323 | char name_buffer[128];
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| 324 |
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| 325 | glGetActiveAttrib( p->glid, i, 128, &attr_nlen, &attr_len, &attr_type, name_buffer );
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| 326 |
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| 327 | string name( name_buffer, size_t(attr_nlen) );
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| 328 |
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| 329 | // skip built-ins
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| 330 | if ( name.substr(0,3) == "gl_" ) continue;
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| 331 |
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| 332 | int attr_loc = glGetAttribLocation( p->glid, name.c_str() );
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| 333 |
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| 334 | attribute& attr = p->m_attribute_map[ name ];
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| 335 | attr.name = name;
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| 336 | attr.location = attr_loc;
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| 337 | attr.type = gl_enum_to_datatype( attr_type );
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| 338 | attr.length = attr_len;
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| 339 | }
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| 340 | }
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| 341 |
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| 342 | void nv::gl_device::load_uniforms( gl_program_info* p )
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| 343 | {
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| 344 | int params;
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| 345 | glGetProgramiv( p->glid, GL_ACTIVE_UNIFORMS, ¶ms );
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| 346 |
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| 347 | for ( unsigned i = 0; i < size_t(params); ++i )
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| 348 | {
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| 349 | int uni_nlen;
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| 350 | int uni_len;
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| 351 | unsigned uni_type;
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| 352 | char name_buffer[128];
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| 353 |
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| 354 | glGetActiveUniform( p->glid, i, 128, &uni_nlen, &uni_len, &uni_type, name_buffer );
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| 355 |
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| 356 | string name( name_buffer, size_t(uni_nlen) );
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| 357 |
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| 358 | // skip built-ins
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| 359 | if ( name.substr(0,3) == "gl_" ) continue;
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| 360 |
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| 361 | int uni_loc = glGetUniformLocation( p->glid, name.c_str() );
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| 362 | datatype utype = gl_enum_to_datatype( uni_type );
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| 363 |
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| 364 | // check for array
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| 365 | string::size_type arrchar = name.find('[');
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| 366 | if ( arrchar != string::npos )
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| 367 | {
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| 368 | name = name.substr( 0, arrchar );
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| 369 | }
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| 370 |
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| 371 | uniform_base* u = uniform_base::create( utype, name, uni_loc, uni_len );
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| 372 | NV_ASSERT( u, "Unknown uniform type!" );
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| 373 | p->m_uniform_map[ name ] = u;
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| 374 | }
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| 375 | }
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| 376 |
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| 377 | bool nv::gl_device::compile( uint32 sh_type, const std::string& shader_code, unsigned& glid )
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| 378 | {
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| 379 | glid = glCreateShader( sh_type );
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| 380 |
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| 381 | const char* pc = shader_code.c_str();
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| 382 |
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| 383 | glShaderSource( glid, 1, &pc, 0 );
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| 384 | glCompileShader( glid );
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| 385 |
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| 386 | const uint32 buffer_size = 1024;
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| 387 | char buffer[ buffer_size ] = { 0 };
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| 388 | int length;
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| 389 | int compile_ok = GL_FALSE;
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| 390 | glGetShaderiv(glid, GL_COMPILE_STATUS, &compile_ok);
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| 391 | glGetShaderInfoLog( glid, buffer_size, &length, buffer );
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| 392 |
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| 393 | if ( length > 0 )
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| 394 | {
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| 395 | if ( compile_ok == 0 )
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| 396 | {
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| 397 | NV_LOG( LOG_ERROR, "Shader #" << glid << " error: " << buffer );
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| 398 | }
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| 399 | else
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| 400 | {
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| 401 | NV_LOG( LOG_INFO, "Shader #" << glid << " compiled successfully: " << buffer );
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| 402 | }
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| 403 | }
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| 404 | else
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| 405 | {
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| 406 | NV_LOG( LOG_INFO, "Shader #" << glid << " compiled successfully." );
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| 407 | }
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| 408 | return compile_ok != 0;
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| 409 |
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| 410 | }
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| 411 |
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