1 | // Copyright (C) 2012-2015 ChaosForge Ltd
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2 | // http://chaosforge.org/
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3 | //
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4 | // This file is part of Nova libraries.
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5 | // For conditions of distribution and use, see copying.txt file in root folder.
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6 |
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7 | #include "nv/gl/gl_device.hh"
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8 |
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9 | #include "nv/gl/gl_window.hh"
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10 | #include "nv/core/logging.hh"
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11 | #include "nv/lib/sdl_image.hh"
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12 | #include "nv/gl/gl_enum.hh"
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13 | #include "nv/lib/gl.hh"
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14 |
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15 | using namespace nv;
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16 |
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17 | gl_device::gl_device()
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18 | {
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19 | m_shader_header.append( "#version 330 core\n" );
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20 | for ( auto& i : get_uniform_factory() )
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21 | m_shader_header.append( "uniform "+datatype_to_glsl_type( i.second->get_datatype() )+" "+ i.first +";\n" );
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22 | for ( auto& i : get_link_uniform_factory() )
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23 | m_shader_header.append( "uniform sampler2D "+i.first +";\n" );
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24 | }
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25 |
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26 | // this is a temporary function that will be removed once we find a way to
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27 | // pass binary file data around
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28 | image_data* gl_device::create_image_data( string_view filename )
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29 | {
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30 | load_sdl_image_library();
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31 | SDL_Surface* image = IMG_Load( filename.data() );
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32 | if (!image)
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33 | {
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34 | NV_LOG_ERROR( "Image file ", filename, " not found!" );
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35 | return nullptr;
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36 | }
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37 | // TODO: BGR vs RGB, single channel
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38 | pixel_format pformat = RGBA;
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39 | switch ( image->format->BytesPerPixel )
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40 | {
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41 | case 4: pformat = RGBA; break;
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42 | case 3: pformat = RGB; break;
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43 | case 1: pformat = RED; break;
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44 | default: NV_ASSERT( false, "BytesPerPixel != 4,3 or 1!" );
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45 | }
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46 | image_format format( pformat, UBYTE );
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47 | image_data* data = new image_data( format, ivec2( image->w, image->h ), static_cast<nv::uint8*>( image->pixels ) );
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48 | return data;
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49 | }
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50 |
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51 | // this is a temporary function that will be removed once we find a way to
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52 | // pass binary file data around
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53 | image_data* gl_device::create_image_data( const uint8* data, uint32 size )
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54 | {
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55 | load_sdl_image_library();
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56 | SDL_Surface* image = IMG_LoadTyped_RW( SDL_RWFromMem( const_cast<uint8*>( data ), int( size ) ), 1, "png" );
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57 | if ( !image )
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58 | {
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59 | NV_LOG_ERROR( "Image binary data cannot be loaded found!" );
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60 | return nullptr;
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61 | }
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62 | // TODO: BGR vs RGB, single channel
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63 | NV_ASSERT( image->format->BytesPerPixel > 2, "bytes per pixel > 2!" );
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64 | image_format format( image->format->BytesPerPixel == 3 ? RGB : RGBA, UBYTE );
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65 | image_data* idata = new image_data( format, ivec2( image->w, image->h ), static_cast<nv::uint8*>( image->pixels ) );
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66 | return idata;
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67 | }
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68 |
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69 |
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70 | gl_device::~gl_device()
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71 | {
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72 | while ( m_textures.size() > 0 )
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73 | release( m_textures.get_handle(0) );
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74 | while ( m_buffers.size() > 0 )
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75 | release( m_buffers.get_handle(0) );
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76 | while ( m_programs.size() > 0 )
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77 | release( m_programs.get_handle(0) );
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78 | while ( m_shaders.size() > 0 )
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79 | release( m_shaders.get_handle( 0 ) );
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80 | }
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81 |
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82 | nv::shader nv::gl_device::create_shader( shader_type type, string_view sh_source )
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83 | {
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84 | uint32 glid = 0;
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85 | if ( !compile( shader_type_to_enum( type ), sh_source, glid ) )
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86 | return shader();
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87 |
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88 | shader result = m_shaders.create();
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89 | gl_shader_info* info = m_shaders.get( result );
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90 | info->type = type;
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91 | info->glid = glid;
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92 | info->ref = 0;
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93 |
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94 | return result;
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95 | }
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96 |
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97 | nv::program nv::gl_device::create_program( shader vs, shader fs )
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98 | {
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99 | program result = m_programs.create();
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100 | gl_program_info* info = m_programs.get( result );
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101 |
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102 | info->m_attribute_map = new attribute_map;
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103 | info->m_engine_uniforms = new engine_uniform_list;
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104 | info->m_uniform_map = new uniform_map;
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105 |
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106 | info->glid = glCreateProgram();
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107 | info->validated = false;
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108 |
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109 | compile( result, vs, fs );
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110 | prepare_program( result );
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111 | return result;
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112 |
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113 | }
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114 |
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115 | nv::texture nv::gl_device::create_texture( texture_type type, pixel_format format )
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116 | {
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117 | unsigned glid = 0;
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118 |
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119 | glGenTextures( 1, &glid );
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120 |
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121 | texture result = m_textures.create();
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122 | gl_texture_info* info = m_textures.get( result );
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123 | info->type = type;
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124 | info->format = format;
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125 | info->tsampler = sampler();
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126 | info->size = ivec3( 1, 1, 1 );
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127 | info->glid = glid;
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128 |
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129 | return result;
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130 | }
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131 |
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132 | void nv::gl_device::release( texture t )
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133 | {
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134 | gl_texture_info* info = m_textures.get( t );
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135 | if ( info )
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136 | {
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137 | if ( info->glid != 0 )
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138 | {
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139 | glDeleteTextures( 1, &(info->glid) );
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140 | }
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141 | m_textures.destroy( t );
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142 | }
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143 | }
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144 |
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145 | void nv::gl_device::release( buffer b )
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146 | {
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147 | gl_buffer_info* info = m_buffers.get( b );
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148 | if ( info )
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149 | {
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150 | if ( info->glid != 0 )
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151 | {
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152 | glDeleteBuffers( 1, &(info->glid) );
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153 | }
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154 | m_buffers.destroy( b );
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155 | }
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156 | }
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157 |
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158 | const texture_info* nv::gl_device::get_texture_info( texture t ) const
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159 | {
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160 | return m_textures.get( t );
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161 | }
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162 |
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163 | nv::buffer nv::gl_device::create_buffer( buffer_type type, buffer_hint hint )
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164 | {
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165 | unsigned glid = 0;
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166 | glGenBuffers( 1, &glid );
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167 |
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168 | buffer result = m_buffers.create();
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169 | gl_buffer_info* info = m_buffers.get( result );
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170 | info->type = type;
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171 | info->hint = hint;
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172 | info->size = 0;
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173 | info->glid = glid;
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174 | return result;
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175 | }
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176 |
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177 | void nv::gl_device::attach( program p, shader s )
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178 | {
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179 | gl_program_info* pinfo = m_programs.get( p );
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180 | gl_shader_info* sinfo = m_shaders.get( s );
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181 |
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182 | if ( sinfo && pinfo )
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183 | {
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184 | glAttachShader( pinfo->glid, sinfo->glid );
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185 | sinfo->ref++;
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186 | }
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187 |
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188 | }
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189 |
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190 | void nv::gl_device::detach( program p, shader s )
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191 | {
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192 | gl_program_info* pinfo = m_programs.get( p );
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193 | gl_shader_info* sinfo = m_shaders.get( s );
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194 | if ( sinfo && pinfo )
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195 | {
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196 | glDetachShader( pinfo->glid, sinfo->glid );
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197 | sinfo->ref--;
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198 | }
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199 | }
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200 | const buffer_info* nv::gl_device::get_buffer_info( buffer t ) const
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201 | {
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202 | return m_buffers.get( t );
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203 | }
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204 |
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205 | void nv::gl_device::release( program p )
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206 | {
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207 | gl_program_info* info = m_programs.get( p );
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208 | if ( info )
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209 | {
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210 | for ( auto& i : *info->m_uniform_map )
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211 | delete i.second;
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212 |
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213 | detach( p, info->vertex );
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214 | detach( p, info->fragment );
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215 | glDeleteProgram( info->glid );
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216 |
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217 | delete info->m_attribute_map;
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218 | delete info->m_engine_uniforms;
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219 | delete info->m_uniform_map;
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220 |
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221 | m_programs.destroy( p );
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222 | }
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223 | }
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224 |
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225 | void nv::gl_device::release( shader s )
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226 | {
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227 | gl_shader_info* info = m_shaders.get( s );
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228 | if ( info && info->ref == 0 )
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229 | {
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230 | glDeleteShader( info->glid );
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231 | m_shaders.destroy( s );
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232 | }
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233 | }
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234 |
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235 |
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236 | nv::gl_texture_info* nv::gl_device::get_full_texture_info( texture t )
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237 | {
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238 | return m_textures.get( t );
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239 |
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240 | }
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241 |
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242 | nv::gl_buffer_info* nv::gl_device::get_full_buffer_info( buffer t )
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243 | {
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244 | return m_buffers.get( t );
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245 | }
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246 |
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247 | void nv::gl_device::prepare_program( program p )
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248 | {
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249 | gl_program_info* info = m_programs.get( p );
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250 | if ( info )
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251 | {
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252 | auto& map = get_uniform_factory();
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253 | auto& lmap = get_link_uniform_factory();
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254 |
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255 | for ( auto& i : *info->m_uniform_map )
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256 | {
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257 | auto j = lmap.find( i.first );
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258 | if ( j != lmap.end() )
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259 | {
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260 | j->second->set( i.second );
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261 | }
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262 |
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263 | auto k = map.find( i.first );
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264 | if ( k != map.end() )
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265 | {
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266 | info->m_engine_uniforms->push_back( k->second->create( i.second ) );
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267 | }
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268 | }
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269 | }
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270 | }
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271 |
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272 | uniform_base* nv::gl_device::get_uniform( program p, const string_view& name, bool fatal /*= true */ ) const
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273 | {
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274 | const gl_program_info* info = m_programs.get( p );
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275 | {
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276 | nv::uniform_map::const_iterator i = info->m_uniform_map->find( name );
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277 | if ( i != info->m_uniform_map->end() )
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278 | {
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279 | return i->second;
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280 | }
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281 | if ( fatal )
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282 | {
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283 | NV_LOG_CRITICAL( "gl_device : uniform '", name, "' not found in program!" );
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284 | NV_ABORT( "gl_device : uniform not found!" );
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285 | }
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286 | }
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287 | return nullptr;
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288 | }
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289 |
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290 | int nv::gl_device::get_attribute_location( program p, const string_view& name, bool fatal /*= true */ ) const
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291 | {
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292 | const gl_program_info* info = m_programs.get( p );
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293 | if ( info )
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294 | {
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295 | attribute_map::const_iterator i = info->m_attribute_map->find( name );
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296 | if ( i != info->m_attribute_map->end() )
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297 | {
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298 | return i->second.location;
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299 | }
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300 | if ( fatal )
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301 | {
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302 | NV_LOG_CRITICAL( "gl_device : attribute '", name, "' not found in program!" );
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303 | NV_ABORT( "gl_device : attribute not found!" );
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304 | }
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305 | }
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306 | return -1;
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307 | }
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308 |
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309 | bool nv::gl_device::bind_block( program p, const string_view& name, uint32 index )
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310 | {
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311 | const gl_program_info* info = m_programs.get( p );
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312 | if ( info )
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313 | {
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314 | int id = get_block_location( p, name, false );
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315 | if ( id < 0 ) return false;
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316 | glUniformBlockBinding( info->glid, unsigned( id ), index );
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317 | return true;
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318 | }
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319 | return false;
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320 | }
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321 |
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322 | int nv::gl_device::get_block_location( program p, const string_view& name, bool fatal /*= true */ ) const
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323 | {
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324 | const gl_program_info* info = m_programs.get( p );
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325 | if ( info )
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326 | {
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327 | GLuint result = glGetUniformBlockIndex( info->glid, name.data() );
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328 | if ( result != GL_INVALID_INDEX ) return static_cast<int>( result );
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329 | if ( fatal )
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330 | {
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331 | NV_LOG_CRITICAL( "gl_device : block '", name, "' not found in program!" );
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332 | NV_ABORT( "gl_device : block not found!" );
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333 | }
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334 | }
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335 | return -1;
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336 | }
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337 |
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338 | bool nv::gl_device::compile( program pp, shader vp, shader fp )
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339 | {
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340 | gl_program_info* p = m_programs.get( pp );
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341 | p->vertex = vp;
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342 | p->fragment = fp;
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343 |
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344 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::POSITION ), "nv_position" );
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345 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::TEXCOORD ), "nv_texcoord" );
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346 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::NORMAL ), "nv_normal" );
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347 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::COLOR ), "nv_color" );
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348 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::TANGENT ), "nv_tangent" );
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349 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::BONEINDEX ), "nv_boneindex" );
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350 | glBindAttribLocation( p->glid, static_cast<GLuint>( slot::BONEWEIGHT ), "nv_boneweight");
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351 |
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352 | attach( pp, p->vertex );
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353 | attach( pp, p->fragment );
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354 | glLinkProgram( p->glid );
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355 |
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356 | const uint32 buffer_size = 2048;
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357 | char buffer[ buffer_size ] = { 0 };
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358 | int length;
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359 | int status;
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360 |
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361 | glGetProgramiv( p->glid, GL_LINK_STATUS, &status );
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362 | glGetProgramInfoLog( p->glid, buffer_size, &length, buffer );
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363 |
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364 | NV_LOG_INFO( "Program #", p->glid, (status == GL_FALSE ? " failed to compile!" : " compiled successfully.") );
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365 |
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366 | if ( length > 0 )
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367 | {
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368 | NV_LOG_INFO( "Program #", p->glid, " log: ", string_view( buffer, size_t( length ) ) );
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369 | }
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370 |
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371 | if ( status == GL_FALSE )
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372 | {
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373 | return false;
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374 | }
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375 |
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376 | load_attributes( p );
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377 | load_uniforms( p );
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378 | return true;
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379 | }
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380 |
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381 | void nv::gl_device::update_uniforms( gl_program_info* p )
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382 | {
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383 | for ( auto& i : *p->m_uniform_map )
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384 | {
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385 | uniform_base* ubase = i.second;
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386 | if ( ubase->is_dirty() )
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387 | {
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388 | GLint uloc = ubase->get_location();
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389 | GLsizei size = static_cast<GLsizei>( ubase->get_length() );
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390 | switch( ubase->get_type() )
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391 | {
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392 | case FLOAT : glUniform1fv( uloc, size, static_cast< uniform< enum_to_type< FLOAT >::type >*>( ubase )->get_value() ); break;
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393 | case INT : glUniform1iv( uloc, size, static_cast< uniform< enum_to_type< INT >::type >*>( ubase )->get_value() ); break;
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394 | case FLOAT_VECTOR_2 : glUniform2fv( uloc, size, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_VECTOR_2 >::type >*>( ubase )->get_value())); break;
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395 | case FLOAT_VECTOR_3 : glUniform3fv( uloc, size, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_VECTOR_3 >::type >*>( ubase )->get_value())); break;
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396 | case FLOAT_VECTOR_4 : glUniform4fv( uloc, size, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_VECTOR_4 >::type >*>( ubase )->get_value())); break;
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397 | case INT_VECTOR_2 : glUniform2iv( uloc, size, reinterpret_cast<const GLint*>( static_cast< uniform< enum_to_type< INT_VECTOR_2 >::type >*>( ubase )->get_value())); break;
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398 | case INT_VECTOR_3 : glUniform3iv( uloc, size, reinterpret_cast<const GLint*>( static_cast< uniform< enum_to_type< INT_VECTOR_3 >::type >*>( ubase )->get_value())); break;
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399 | case INT_VECTOR_4 : glUniform4iv( uloc, size, reinterpret_cast<const GLint*>( static_cast< uniform< enum_to_type< INT_VECTOR_4 >::type >*>( ubase )->get_value())); break;
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400 | case FLOAT_MATRIX_2 : glUniformMatrix2fv( uloc, size, GL_FALSE, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_MATRIX_2 >::type >*>( ubase )->get_value())); break;
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401 | case FLOAT_MATRIX_3 : glUniformMatrix3fv( uloc, size, GL_FALSE, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_MATRIX_3 >::type >*>( ubase )->get_value())); break;
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402 | case FLOAT_MATRIX_4 : glUniformMatrix4fv( uloc, size, GL_FALSE, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_MATRIX_4 >::type >*>( ubase )->get_value())); break;
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403 | default : break; // error?
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404 | }
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405 | ubase->clean();
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406 | }
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407 | }
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408 | }
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409 |
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410 | void nv::gl_device::load_attributes( gl_program_info* p )
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411 | {
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412 | int params;
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413 | glGetProgramiv( p->glid, GL_ACTIVE_ATTRIBUTES, ¶ms );
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414 |
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415 | for ( unsigned i = 0; i < unsigned( params ); ++i )
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416 | {
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417 | int attr_nlen;
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418 | int attr_len;
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419 | unsigned attr_type;
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420 | char name_buffer[128];
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421 |
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422 | glGetActiveAttrib( p->glid, i, 128, &attr_nlen, &attr_len, &attr_type, name_buffer );
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423 |
|
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424 | string_view name( name_buffer, size_t( attr_nlen ) );
|
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425 |
|
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426 | // skip built-ins
|
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427 | if ( name.substr(0,3) == "gl_" ) continue;
|
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428 |
|
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429 | int attr_loc = glGetAttribLocation( p->glid, name.data() );
|
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430 |
|
---|
431 | attribute& attr = (*p->m_attribute_map)[ name ];
|
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432 | attr.location = attr_loc;
|
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433 | attr.type = gl_enum_to_datatype( attr_type );
|
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434 | attr.length = attr_len;
|
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435 | }
|
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436 | }
|
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437 |
|
---|
438 | void nv::gl_device::load_uniforms( gl_program_info* p )
|
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439 | {
|
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440 | int params;
|
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441 | int bparams;
|
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442 | glGetProgramiv( p->glid, GL_ACTIVE_UNIFORMS, ¶ms );
|
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443 | glGetProgramiv( p->glid, GL_ACTIVE_UNIFORM_BLOCKS, &bparams );
|
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444 |
|
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445 | for ( unsigned i = 0; i < unsigned( params ); ++i )
|
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446 | {
|
---|
447 | int uni_nlen;
|
---|
448 | int uni_len;
|
---|
449 | unsigned uni_type;
|
---|
450 | char name_buffer[128];
|
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451 |
|
---|
452 | glGetActiveUniform( p->glid, i, 128, &uni_nlen, &uni_len, &uni_type, name_buffer );
|
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453 |
|
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454 | string_view name( name_buffer, size_t( uni_nlen ) );
|
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455 |
|
---|
456 | // skip built-ins
|
---|
457 | if ( name.substr(0,3) == "gl_" ) continue;
|
---|
458 |
|
---|
459 | int uni_loc = glGetUniformLocation( p->glid, name.data() );
|
---|
460 | datatype utype = gl_enum_to_datatype( uni_type );
|
---|
461 |
|
---|
462 | // check for array
|
---|
463 | size_t arrchar = name.find( '[' );
|
---|
464 | if ( arrchar != string_view::npos )
|
---|
465 | {
|
---|
466 | name = name.substr( 0, arrchar );
|
---|
467 | }
|
---|
468 |
|
---|
469 | uniform_base* u = uniform_base::create( utype, uni_loc, size_t( uni_len ) );
|
---|
470 | NV_ASSERT( u, "Unknown uniform type!" );
|
---|
471 | (*p->m_uniform_map)[ name ] = u;
|
---|
472 | //NV_LOG_DEBUG( "Uniform : ", name, " - ", utype, "/", uni_len );
|
---|
473 |
|
---|
474 | }
|
---|
475 |
|
---|
476 | for ( unsigned i = 0; i < unsigned( bparams ); ++i )
|
---|
477 | {
|
---|
478 | int uni_len;
|
---|
479 | char name_buffer[128];
|
---|
480 |
|
---|
481 | glGetActiveUniformBlockName( p->glid, i, 128, &uni_len, name_buffer );
|
---|
482 | NV_LOG_INFO( string_view( name_buffer, size_t( uni_len ) ) );
|
---|
483 | }
|
---|
484 | }
|
---|
485 |
|
---|
486 | bool nv::gl_device::compile( uint32 sh_type, string_view shader_code, unsigned& glid )
|
---|
487 | {
|
---|
488 | glid = glCreateShader( sh_type );
|
---|
489 |
|
---|
490 | const char* pc = shader_code.data();
|
---|
491 | int l = int( shader_code.length() );
|
---|
492 |
|
---|
493 | glShaderSource( glid, 1, &pc, &l );
|
---|
494 | glCompileShader( glid );
|
---|
495 |
|
---|
496 | const uint32 buffer_size = 1024;
|
---|
497 | char buffer[ buffer_size ] = { 0 };
|
---|
498 | int length;
|
---|
499 | int compile_ok = GL_FALSE;
|
---|
500 | glGetShaderiv(glid, GL_COMPILE_STATUS, &compile_ok);
|
---|
501 | glGetShaderInfoLog( glid, buffer_size, &length, buffer );
|
---|
502 |
|
---|
503 | if ( length > 0 )
|
---|
504 | {
|
---|
505 | if ( compile_ok == 0 )
|
---|
506 | {
|
---|
507 | NV_LOG_ERROR( "Shader #", glid, " error: ", string_view( buffer, size_t( length ) ) );
|
---|
508 | }
|
---|
509 | else
|
---|
510 | {
|
---|
511 | NV_LOG_INFO( "Shader #", glid, " compiled successfully: ", string_view( buffer, size_t( length ) ) );
|
---|
512 | }
|
---|
513 | }
|
---|
514 | else
|
---|
515 | {
|
---|
516 | NV_LOG_INFO( "Shader #", glid, " compiled successfully." );
|
---|
517 | }
|
---|
518 | return compile_ok != 0;
|
---|
519 |
|
---|
520 | }
|
---|
521 |
|
---|