source/Irrlicht/OpenGL/ExtensionHandler.cpp

   1 // Copyright (C) 2015 Patryk Nadrowski\r
   2 // Copyright (C) 2009-2010 Amundis\r
   3 // 2017 modified by Michael Zeilfelder (unifying extension handlers)\r
   4 // This file is part of the "Irrlicht Engine".\r
   5 // For conditions of distribution and use, see copyright notice in Irrlicht.h\r
   6 \r
   7 #include "ExtensionHandler.h"\r
   8 \r
   9 #include "irrString.h"\r
  10 #include "SMaterial.h"\r
  11 #include "fast_atof.h"\r
  12 \r
  13 namespace irr\r
  14 {\r
  15 namespace video\r
  16 {\r
  17         void COpenGL3ExtensionHandler::initExtensions()\r
  18         {\r
  19                 getGLVersion();\r
  20 \r
  21                 getGLExtensions();\r
  22 \r
  23                 GLint val=0;\r
  24                 glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &val);\r
  25                 Feature.MaxTextureUnits = static_cast<u8>(val);\r
  26 \r
  27         #ifdef GL_EXT_texture_filter_anisotropic\r
  28                 if (FeatureAvailable[IRR_GL_EXT_texture_filter_anisotropic])\r
  29                 {\r
  30                         glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &val);\r
  31                         MaxAnisotropy = static_cast<u8>(val);\r
  32                 }\r
  33         #endif\r
  34         #ifdef GL_MAX_ELEMENTS_INDICES\r
  35                 glGetIntegerv(GL_MAX_ELEMENTS_INDICES, &val);\r
  36                 MaxIndices=val;\r
  37         #endif\r
  38                 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &val);\r
  39                 MaxTextureSize=static_cast<u32>(val);\r
  40         #ifdef GL_EXT_texture_lod_bias\r
  41                 if (FeatureAvailable[IRR_GL_EXT_texture_lod_bias])\r
  42                         glGetFloatv(GL_MAX_TEXTURE_LOD_BIAS_EXT, &MaxTextureLODBias);\r
  43         #endif\r
  44                 glGetFloatv(GL_ALIASED_LINE_WIDTH_RANGE, DimAliasedLine);\r
  45                 glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, DimAliasedPoint);\r
  46 \r
  47                 Feature.MaxTextureUnits = core::min_(Feature.MaxTextureUnits, static_cast<u8>(MATERIAL_MAX_TEXTURES));\r
  48                 Feature.ColorAttachment = 1;\r
  49         }\r
  50 \r
  51 } // end namespace video\r
  52 } // end namespace irr\r