dali-toolkit/public-api/shader-effects/alpha-discard-effect.cpp

   1 //
   2 // Copyright (c) 2014 Samsung Electronics Co., Ltd.
   3 //
   4 // Licensed under the Flora License, Version 1.0 (the License);
   5 // you may not use this file except in compliance with the License.
   6 // You may obtain a copy of the License at
   7 //
   8 //     http://floralicense.org/license/
   9 //
  10 // Unless required by applicable law or agreed to in writing, software
  11 // distributed under the License is distributed on an AS IS BASIS,
  12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 // See the License for the specific language governing permissions and
  14 // limitations under the License.
  15 //
  16
  17 // CLASS HEADER
  18 #include <dali-toolkit/public-api/shader-effects/alpha-discard-effect.h>
  19
  20 namespace Dali
  21 {
  22
  23 namespace Toolkit
  24 {
  25
  26 AlphaDiscardEffect::AlphaDiscardEffect()
  27 {
  28 }
  29
  30 AlphaDiscardEffect::~AlphaDiscardEffect()
  31 {
  32 }
  33
  34 AlphaDiscardEffect AlphaDiscardEffect::New()
  35 {
  36   const char* ALPHA_DISCARD_FRAGMENT_SHADER_SOURCE =
  37       "void main()                                                    \n"
  38       "{                                                              \n"
  39       "  vec4 color = texture2D( sTexture, vTexCoord );               \n"
  40       "  if(color.a <= 0.0001)                                        \n"
  41       "  {                                                            \n"
  42       "    discard;                                                   \n"
  43       "  }                                                            \n"
  44       "  gl_FragColor = color * uColor;                               \n"
  45       "}                                                              \n";
  46
  47   ShaderEffect shader = ShaderEffect::New( "", // Use default
  48                                            ALPHA_DISCARD_FRAGMENT_SHADER_SOURCE );
  49   return AlphaDiscardEffect( shader );
  50 }
  51
  52 //Call the Parent copy constructor to add reference to the implementation for this object
  53 AlphaDiscardEffect::AlphaDiscardEffect( ShaderEffect handle )
  54 : ShaderEffect( handle )
  55 {
  56 }
  57
  58 } // namespace Toolkit
  59
  60 } // namespace Dali