source/Irrlicht/COGLESExtensionHandler.cpp

   1 // Copyright (C) 2008 Christian Stehno\r
   2 // Heavily based on the OpenGL driver implemented by Nikolaus Gebhardt\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 "COGLESExtensionHandler.h"\r
   8 \r
   9 #ifdef _IRR_COMPILE_WITH_OGLES1_\r
  10 \r
  11 #include "irrString.h"\r
  12 #include "SMaterial.h"\r
  13 #include "fast_atof.h"\r
  14 \r
  15 #if defined(_IRR_OGLES1_USE_EXTPOINTER_)\r
  16 #if defined(_IRR_COMPILE_WITH_ANDROID_DEVICE_) || defined(_IRR_COMPILE_WITH_FB_DEVICE_) || defined(_IRR_COMPILE_WITH_WINDOWS_DEVICE_)\r
  17 #include <EGL/egl.h>\r
  18 #else\r
  19 #include <GLES/egl.h>\r
  20 #endif\r
  21 #endif\r
  22 \r
  23 namespace irr\r
  24 {\r
  25 namespace video\r
  26 {\r
  27 \r
  28         COGLES1ExtensionHandler::COGLES1ExtensionHandler() : COGLESCoreExtensionHandler(),\r
  29                 MaxUserClipPlanes(0), MaxLights(0)\r
  30 #if defined(_IRR_OGLES1_USE_EXTPOINTER_)\r
  31                 , pGlBlendEquationOES(0), pGlBlendFuncSeparateOES(0),\r
  32                 pGlBindFramebufferOES(0), pGlDeleteFramebuffersOES(0),\r
  33                 pGlGenFramebuffersOES(0), pGlCheckFramebufferStatusOES(0),\r
  34                 pGlFramebufferTexture2DOES(0), pGlGenerateMipmapOES(0)\r
  35 #endif\r
  36         {\r
  37         }\r
  38 \r
  39         void COGLES1ExtensionHandler::initExtensions()\r
  40         {\r
  41                 getGLVersion();\r
  42 \r
  43                 if (Version >= 100)\r
  44                         os::Printer::log("OpenGL ES driver version is 1.1.", ELL_INFORMATION);\r
  45                 else\r
  46                         os::Printer::log("OpenGL ES driver version is 1.0.", ELL_WARNING);\r
  47 \r
  48                 getGLExtensions();\r
  49 \r
  50                 GLint val = 0;\r
  51 \r
  52                 if (Version > 100 || FeatureAvailable[IRR_GL_IMG_user_clip_plane])\r
  53                 {\r
  54                         glGetIntegerv(GL_MAX_CLIP_PLANES, &val);\r
  55                         MaxUserClipPlanes = static_cast<u8>(val);\r
  56                 }\r
  57 \r
  58                 glGetIntegerv(GL_MAX_LIGHTS, &val);\r
  59                 MaxLights = static_cast<u8>(val);\r
  60 \r
  61                 glGetIntegerv(GL_MAX_TEXTURE_UNITS, &val);\r
  62                 Feature.MaxTextureUnits = static_cast<u8>(val);\r
  63 \r
  64 #ifdef GL_EXT_texture_filter_anisotropic\r
  65                 if (FeatureAvailable[IRR_GL_EXT_texture_filter_anisotropic])\r
  66                 {\r
  67                         glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &val);\r
  68                         MaxAnisotropy = static_cast<u8>(val);\r
  69                 }\r
  70 #endif\r
  71 #ifdef GL_MAX_ELEMENTS_INDICES\r
  72                 glGetIntegerv(GL_MAX_ELEMENTS_INDICES, &val);\r
  73                 MaxIndices = val;\r
  74 #endif\r
  75                 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &val);\r
  76                 MaxTextureSize = static_cast<u32>(val);\r
  77 #ifdef GL_EXT_texture_lod_bias\r
  78                 if (FeatureAvailable[IRR_GL_EXT_texture_lod_bias])\r
  79                         glGetFloatv(GL_MAX_TEXTURE_LOD_BIAS_EXT, &MaxTextureLODBias);\r
  80 #endif\r
  81                 glGetFloatv(GL_ALIASED_LINE_WIDTH_RANGE, DimAliasedLine);\r
  82                 glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, DimAliasedPoint);\r
  83 \r
  84                 Feature.MaxTextureUnits = core::min_(Feature.MaxTextureUnits, static_cast<u8>(MATERIAL_MAX_TEXTURES));\r
  85                 Feature.MaxTextureUnits = core::min_(Feature.MaxTextureUnits, static_cast<u8>(MATERIAL_MAX_TEXTURES_USED));\r
  86                 Feature.ColorAttachment = 1;\r
  87 \r
  88 #if defined(_IRR_OGLES1_USE_EXTPOINTER_)\r
  89                 pGlBlendEquationOES = (PFNGLBLENDEQUATIONOESPROC)eglGetProcAddress("glBlendEquationOES");\r
  90                 pGlBlendFuncSeparateOES = (PFNGLBLENDFUNCSEPARATEOESPROC)eglGetProcAddress("glBlendFuncSeparateOES");\r
  91                 pGlBindFramebufferOES = (PFNGLBINDFRAMEBUFFEROESPROC)eglGetProcAddress("glBindFramebufferOES");\r
  92                 pGlDeleteFramebuffersOES = (PFNGLDELETEFRAMEBUFFERSOESPROC)eglGetProcAddress("glDeleteFramebuffersOES");\r
  93                 pGlGenFramebuffersOES = (PFNGLGENFRAMEBUFFERSOESPROC)eglGetProcAddress("glGenFramebuffersOES");\r
  94                 pGlCheckFramebufferStatusOES = (PFNGLCHECKFRAMEBUFFERSTATUSOESPROC)eglGetProcAddress("glCheckFramebufferStatusOES");\r
  95                 pGlFramebufferTexture2DOES = (PFNGLFRAMEBUFFERTEXTURE2DOESPROC)eglGetProcAddress("glFramebufferTexture2DOES");\r
  96                 pGlGenerateMipmapOES = (PFNGLGENERATEMIPMAPOESPROC)eglGetProcAddress("glGenerateMipmapOES");\r
  97 #endif\r
  98         }\r
  99 \r
 100 } // end namespace video\r
 101 } // end namespace irr\r
 102 \r
 103 \r
 104 #endif // _IRR_COMPILE_WITH_OGLES2_\r