dali-toolkit/internal/text/rendering/vector-based/glyphy-shader/glyphy-shader.cpp

   1 /*
   2  * Copyright (c) 2021 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/internal/text/rendering/vector-based/glyphy-shader/glyphy-shader.h>
  20
  21 // EXTERNAL HEADERS
  22 #include <sstream>
  23
  24 // INTERNAL INCLUDES
  25 #include <dali-toolkit/internal/graphics/builtin-shader-extern-gen.h>
  26
  27 using namespace Dali;
  28
  29 namespace Dali
  30 {
  31 namespace Toolkit
  32 {
  33 namespace Text
  34 {
  35 GlyphyShader::GlyphyShader()
  36 {
  37 }
  38
  39 GlyphyShader::GlyphyShader(Shader handle)
  40 : Shader(handle)
  41 {
  42 }
  43
  44 GlyphyShader::~GlyphyShader()
  45 {
  46 }
  47
  48 GlyphyShader GlyphyShader::New(const Dali::Vector4& atlasInfo)
  49 {
  50   std::ostringstream vertexShaderStringStream;
  51   std::ostringstream fragmentShaderStringStream;
  52
  53   vertexShaderStringStream << SHADER_GLYPHY_SHADER_EXTENTION_PREFIX_DEF.data() << SHADER_GLYPHY_SHADER_MAIN_VERT.data();
  54
  55   fragmentShaderStringStream << SHADER_GLYPHY_SHADER_EXTENTION_PREFIX_DEF.data()
  56                              << SHADER_GLYPHY_SHADER_FRAGMENT_PREFIX_FRAG.data()
  57                              << SHADER_GLYPHY_COMMON_GLSL_SHADER_DEF.data()
  58                              << "#define GLYPHY_SDF_PSEUDO_DISTANCE 1\n"
  59                              << SHADER_GLYPHY_SDF_GLSL_SHADER_DEF.data()
  60                              << SHADER_GLYPHY_SHADER_MAIN_FRAG.data();
  61
  62   Shader shaderEffectCustom = Shader::New(vertexShaderStringStream.str(),
  63                                           fragmentShaderStringStream.str(),
  64                                           Shader::Hint::OUTPUT_IS_TRANSPARENT);
  65
  66   GlyphyShader handle(shaderEffectCustom);
  67
  68   handle.RegisterProperty("u_atlas_info", atlasInfo);
  69   handle.RegisterProperty("u_contrast", 1.f);
  70   handle.RegisterProperty("u_gamma_adjust", 1.f);
  71   handle.RegisterProperty("u_outline_thickness", 1.f);
  72   handle.RegisterProperty("u_outline", 1.f);
  73   handle.RegisterProperty("u_boldness", 0.f);
  74
  75   return handle;
  76 }
  77
  78 } // namespace Text
  79
  80 } // namespace Toolkit
  81
  82 } // namespace Dali