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

   1 /*
   2  * Copyright (c) 2015 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (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://www.apache.org/licenses/LICENSE-2.0
   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
  18 // CLASS HEADER
  19 #include <dali-toolkit/devel-api/shader-effects/alpha-discard-effect.h>
  20
  21 namespace Dali
  22 {
  23
  24 namespace Toolkit
  25 {
  26
  27 AlphaDiscardEffect::AlphaDiscardEffect()
  28 {
  29 }
  30
  31 AlphaDiscardEffect::~AlphaDiscardEffect()
  32 {
  33 }
  34
  35 AlphaDiscardEffect AlphaDiscardEffect::New()
  36 {
  37   const char* ALPHA_DISCARD_FRAGMENT_SHADER_SOURCE =
  38       "void main()                                                    \n"
  39       "{                                                              \n"
  40       "  mediump vec4 color = texture2D( sTexture, vTexCoord );       \n"
  41       "  if(color.a <= 0.0001)                                        \n"
  42       "  {                                                            \n"
  43       "    discard;                                                   \n"
  44       "  }                                                            \n"
  45       "  gl_FragColor = color * uColor;                               \n"
  46       "}                                                              \n";
  47
  48   ShaderEffect shader = ShaderEffect::New( "", // Use default
  49                                            ALPHA_DISCARD_FRAGMENT_SHADER_SOURCE );
  50   return AlphaDiscardEffect( shader );
  51 }
  52
  53 //Call the Parent copy constructor to add reference to the implementation for this object
  54 AlphaDiscardEffect::AlphaDiscardEffect( ShaderEffect handle )
  55 : ShaderEffect( handle )
  56 {
  57 }
  58
  59 } // namespace Toolkit
  60
  61 } // namespace Dali