source/tests.cpp

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