source/Irrlicht/COpenGLCacheHandler.cpp

   1 // Copyright (C) 2015 Patryk Nadrowski\r
   2 // This file is part of the "Irrlicht Engine".\r
   3 // For conditions of distribution and use, see copyright notice in Irrlicht.h\r
   4 \r
   5 #include "COpenGLCacheHandler.h"\r
   6 \r
   7 #ifdef _IRR_COMPILE_WITH_OPENGL_\r
   8 \r
   9 #include "COpenGLDriver.h"\r
  10 \r
  11 namespace irr\r
  12 {\r
  13 namespace video\r
  14 {\r
  15 \r
  16 /* COpenGLCacheHandler */\r
  17 \r
  18 COpenGLCacheHandler::COpenGLCacheHandler(COpenGLDriver* driver) :\r
  19         COpenGLCoreCacheHandler<COpenGLDriver, COpenGLTexture>(driver), AlphaMode(GL_ALWAYS), AlphaRef(0.f), AlphaTest(false),\r
  20         MatrixMode(GL_MODELVIEW), ClientActiveTexture(GL_TEXTURE0), ClientStateVertex(false),\r
  21         ClientStateNormal(false), ClientStateColor(false), ClientStateTexCoord0(false)\r
  22 {\r
  23         // Initial OpenGL values from specification.\r
  24 \r
  25         glAlphaFunc(AlphaMode, AlphaRef);\r
  26         glDisable(GL_ALPHA_TEST);\r
  27 \r
  28         glMatrixMode(MatrixMode);\r
  29 \r
  30         Driver->irrGlClientActiveTexture(ClientActiveTexture);\r
  31 \r
  32         glDisableClientState(GL_VERTEX_ARRAY);\r
  33         glDisableClientState(GL_NORMAL_ARRAY);\r
  34         glDisableClientState(GL_COLOR_ARRAY);\r
  35         glDisableClientState(GL_TEXTURE_COORD_ARRAY);\r
  36 }\r
  37 \r
  38 COpenGLCacheHandler::~COpenGLCacheHandler()\r
  39 {\r
  40 }\r
  41 \r
  42 void COpenGLCacheHandler::setAlphaFunc(GLenum mode, GLclampf ref)\r
  43 {\r
  44         if (AlphaMode != mode || AlphaRef != ref)\r
  45         {\r
  46                 glAlphaFunc(mode, ref);\r
  47 \r
  48                 AlphaMode = mode;\r
  49                 AlphaRef = ref;\r
  50         }\r
  51 }\r
  52 \r
  53 void COpenGLCacheHandler::setAlphaTest(bool enable)\r
  54 {\r
  55         if (AlphaTest != enable)\r
  56         {\r
  57                 if (enable)\r
  58                         glEnable(GL_ALPHA_TEST);\r
  59                 else\r
  60                         glDisable(GL_ALPHA_TEST);\r
  61                 AlphaTest = enable;\r
  62         }\r
  63 }\r
  64 \r
  65 void COpenGLCacheHandler::setClientState(bool vertex, bool normal, bool color, bool texCoord0)\r
  66 {\r
  67         if (ClientStateVertex != vertex)\r
  68         {\r
  69                 if (vertex)\r
  70                         glEnableClientState(GL_VERTEX_ARRAY);\r
  71                 else\r
  72                         glDisableClientState(GL_VERTEX_ARRAY);\r
  73 \r
  74                 ClientStateVertex = vertex;\r
  75         }\r
  76 \r
  77         if (ClientStateNormal != normal)\r
  78         {\r
  79                 if (normal)\r
  80                         glEnableClientState(GL_NORMAL_ARRAY);\r
  81                 else\r
  82                         glDisableClientState(GL_NORMAL_ARRAY);\r
  83 \r
  84                 ClientStateNormal = normal;\r
  85         }\r
  86 \r
  87         if (ClientStateColor != color)\r
  88         {\r
  89                 if (color)\r
  90                         glEnableClientState(GL_COLOR_ARRAY);\r
  91                 else\r
  92                         glDisableClientState(GL_COLOR_ARRAY);\r
  93 \r
  94                 ClientStateColor = color;\r
  95         }\r
  96 \r
  97         if (ClientStateTexCoord0 != texCoord0)\r
  98         {\r
  99                 setClientActiveTexture(GL_TEXTURE0_ARB);\r
 100 \r
 101                 if (texCoord0)\r
 102                         glEnableClientState(GL_TEXTURE_COORD_ARRAY);\r
 103                 else\r
 104                         glDisableClientState(GL_TEXTURE_COORD_ARRAY);\r
 105 \r
 106                 ClientStateTexCoord0 = texCoord0;\r
 107         }\r
 108 }\r
 109 \r
 110 void COpenGLCacheHandler::setMatrixMode(GLenum mode)\r
 111 {\r
 112         if (MatrixMode != mode)\r
 113         {\r
 114                 glMatrixMode(mode);\r
 115                 MatrixMode = mode;\r
 116         }\r
 117 }\r
 118 \r
 119 void COpenGLCacheHandler::setClientActiveTexture(GLenum texture)\r
 120 {\r
 121         if (ClientActiveTexture != texture)\r
 122         {\r
 123                 Driver->irrGlClientActiveTexture(texture);\r
 124                 ClientActiveTexture = texture;\r
 125         }\r
 126 }\r
 127 \r
 128 } // end namespace\r
 129 } // end namespace\r
 130 \r
 131 #endif // _IRR_COMPILE_WITH_OPENGL_\r