source/tests.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgl
   4 Copyright © 2007, 2010  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include "tests.h"
   9
  10 namespace Msp {
  11 namespace GL {
  12
  13 AlphaTest::AlphaTest():
  14         pred(ALWAYS),
  15         ref(0)
  16 { }
  17
  18 AlphaTest::AlphaTest(Predicate p, float r):
  19         pred(p),
  20         ref(r)
  21 { }
  22
  23 void AlphaTest::bind() const
  24 {
  25         if(set_current(this))
  26         {
  27                 glEnable(GL_ALPHA_TEST);
  28                 glAlphaFunc(pred, ref);
  29         }
  30 }
  31
  32 void AlphaTest::unbind()
  33 {
  34         if(set_current(0))
  35                 glDisable(GL_ALPHA_TEST);
  36 }
  37
  38
  39 DepthTest::DepthTest():
  40         write(true),
  41         pred(LESS)
  42 { }
  43
  44 DepthTest::DepthTest(Predicate p, bool w):
  45         write(w),
  46         pred(p)
  47 { }
  48
  49 void DepthTest::bind() const
  50 {
  51         if(set_current(this))
  52         {
  53                 glEnable(GL_DEPTH_TEST);
  54                 glDepthFunc(pred);
  55                 glDepthMask(write);
  56         }
  57 }
  58
  59 const DepthTest &DepthTest::lequal()
  60 {
  61         static DepthTest test(LEQUAL);
  62         return test;
  63 }
  64
  65 void DepthTest::unbind()
  66 {
  67         if(set_current(0))
  68         {
  69                 glDisable(GL_DEPTH_TEST);
  70                 // Allow glClear(GL_DEPTH_BUFFER_BIT) to work
  71                 glDepthMask(true);
  72         }
  73 }
  74
  75
  76 ScissorTest::ScissorTest():
  77         left(0),
  78         bottom(0),
  79         width(1),
  80         height(1)
  81 { }
  82
  83 ScissorTest::ScissorTest(int l, int b, unsigned w, unsigned h):
  84         left(l),
  85         bottom(b),
  86         width(w),
  87         height(h)
  88 { }
  89
  90 void ScissorTest::bind() const
  91 {
  92         if(set_current(this))
  93         {
  94                 glEnable(GL_SCISSOR_TEST);
  95                 glScissor(left, bottom, width, height);
  96         }
  97 }
  98
  99 void ScissorTest::unbind()
 100 {
 101         if(set_current(0))
 102                 glDisable(GL_SCISSOR_TEST);
 103 }
 104
 105 } // namespace GL
 106 } // namespace Msp