dali-toolkit/internal/visuals/image-visual-shader-factory.cpp

   1 /*
   2  * Copyright (c) 2023 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 // CLASS HEADER
  18 #include <dali-toolkit/internal/visuals/image-visual-shader-factory.h>
  19
  20 // EXTERNAL INCLUDES
  21 #include <dali/devel-api/rendering/texture-devel.h>
  22
  23 // INTERNAL INCLUDES
  24 #include <dali-toolkit/internal/graphics/builtin-shader-extern-gen.h>
  25 #include <dali-toolkit/internal/visuals/visual-string-constants.h>
  26 #include <dali/integration-api/debug.h>
  27
  28 namespace Dali
  29 {
  30 namespace Toolkit
  31 {
  32 namespace Internal
  33 {
  34 namespace
  35 {
  36 const Vector4 FULL_TEXTURE_RECT(0.f, 0.f, 1.f, 1.f);
  37
  38 const int NATIVE_SHADER_TYPE_OFFSET = VisualFactoryCache::ShaderType::NATIVE_IMAGE_SHADER - VisualFactoryCache::ShaderType::IMAGE_SHADER;
  39
  40 } // unnamed namespace
  41
  42 static constexpr auto SHADER_TYPE_COUNT = 6u;
  43
  44 const std::string_view VertexPredefines[SHADER_TYPE_COUNT]{
  45   "",                                     // VisualFactoryCache::IMAGE_SHADER,
  46   "#define IS_REQUIRED_ROUNDED_CORNER\n", //VisualFactoryCache::IMAGE_SHADER_ROUNDED_CORNER,
  47   "",                                     //VisualFactoryCache::IMAGE_SHADER_YUV_TO_RGB,
  48   "#define IS_REQUIRED_ROUNDED_CORNER\n", //VisualFactoryCache::IMAGE_SHADER_ROUNDED_CORNER_YUV_TO_RGB,
  49   "",                                     //VisualFactoryCache::IMAGE_SHADER_YUV_AND_RGB,
  50   "#define IS_REQUIRED_ROUNDED_CORNER\n", //VisualFactoryCache::IMAGE_SHADER_ROUNDED_CORNER_YUV_AND_RGB,
  51 };
  52 const std::string_view FragmentPredefines[SHADER_TYPE_COUNT]{
  53   "",                                                                              // VisualFactoryCache::IMAGE_SHADER,
  54   "#define IS_REQUIRED_ROUNDED_CORNER\n",                                          //VisualFactoryCache::IMAGE_SHADER_ROUNDED_CORNER,
  55   "#define IS_REQUIRED_YUV_TO_RGB\n",                                              //VisualFactoryCache::IMAGE_SHADER_YUV_TO_RGB,
  56   "#define IS_REQUIRED_YUV_TO_RGB\n#define IS_REQUIRED_ROUNDED_CORNER\n",          //VisualFactoryCache::IMAGE_SHADER_ROUNDED_CORNER_YUV_TO_RGB,
  57   "#define IS_REQUIRED_UNIFIED_YUV_AND_RGB\n",                                     //VisualFactoryCache::IMAGE_SHADER_YUV_AND_RGB,
  58   "#define IS_REQUIRED_UNIFIED_YUV_AND_RGB\n#define IS_REQUIRED_ROUNDED_CORNER\n", //VisualFactoryCache::IMAGE_SHADER_ROUNDED_CORNER_YUV_AND_RGB,
  59 };
  60
  61 ImageVisualShaderFactory::ImageVisualShaderFactory()
  62 : mFragmentShaderNeedChange(ImageVisualShaderFeature::ChangeFragmentShader::UNDECIDED)
  63 {
  64 }
  65
  66 ImageVisualShaderFactory::~ImageVisualShaderFactory()
  67 {
  68 }
  69
  70 Shader ImageVisualShaderFactory::GetShader(VisualFactoryCache& factoryCache, ImageVisualShaderFeatureBuilder& featureBuilder)
  71 {
  72   Shader                         shader;
  73   VisualFactoryCache::ShaderType shaderType = featureBuilder.GetShaderType();
  74
  75   if(featureBuilder.NeedToChangeFragmentShader() == ImageVisualShaderFeature::ChangeFragmentShader::NEED_CHANGE &&
  76      (mFragmentShaderNeedChange == ImageVisualShaderFeature::ChangeFragmentShader::UNDECIDED ||
  77       mFragmentShaderNeedChange == ImageVisualShaderFeature::ChangeFragmentShader::NEED_CHANGE))
  78   {
  79     shaderType = static_cast<VisualFactoryCache::ShaderType>(static_cast<int>(shaderType) + NATIVE_SHADER_TYPE_OFFSET);
  80   }
  81
  82   shader = factoryCache.GetShader(shaderType);
  83   if(shader)
  84   {
  85     return shader;
  86   }
  87
  88   std::string vertexShaderPrefixList;
  89   std::string fragmentShaderPrefixList;
  90   featureBuilder.GetVertexShaderPrefixList(vertexShaderPrefixList);
  91   featureBuilder.GetFragmentShaderPrefixList(fragmentShaderPrefixList);
  92
  93   std::string vertexShader   = std::string(Dali::Shader::GetVertexShaderPrefix() + vertexShaderPrefixList + SHADER_IMAGE_VISUAL_SHADER_VERT.data());
  94   std::string fragmentShader = std::string(Dali::Shader::GetFragmentShaderPrefix() + fragmentShaderPrefixList + SHADER_IMAGE_VISUAL_SHADER_FRAG.data());
  95
  96   if(featureBuilder.NeedToChangeFragmentShader() == ImageVisualShaderFeature::ChangeFragmentShader::NEED_CHANGE)
  97   {
  98     bool modified = DevelTexture::ApplyNativeFragmentShader(featureBuilder.GetTexture(), fragmentShader);
  99     if(mFragmentShaderNeedChange == ImageVisualShaderFeature::ChangeFragmentShader::NEED_CHANGE)
 100     {
 101       DALI_ASSERT_ALWAYS(modified && "NativeImageTexture need to change fragment shader. But DALI default image shader doesn't changed!");
 102     }
 103     else if(DALI_UNLIKELY(mFragmentShaderNeedChange == ImageVisualShaderFeature::ChangeFragmentShader::UNDECIDED))
 104     {
 105       mFragmentShaderNeedChange = (modified) ? ImageVisualShaderFeature::ChangeFragmentShader::NEED_CHANGE : ImageVisualShaderFeature::ChangeFragmentShader::DONT_CHANGE;
 106
 107       if(mFragmentShaderNeedChange == ImageVisualShaderFeature::ChangeFragmentShader::DONT_CHANGE)
 108       {
 109         shaderType = static_cast<VisualFactoryCache::ShaderType>(static_cast<int>(shaderType) - NATIVE_SHADER_TYPE_OFFSET);
 110         shader     = factoryCache.GetShader(shaderType);
 111       }
 112     }
 113   }
 114
 115   if(shader)
 116   {
 117     return shader;
 118   }
 119
 120   shader = Shader::New(vertexShader, fragmentShader);
 121   shader.RegisterProperty(PIXEL_AREA_UNIFORM_NAME, FULL_TEXTURE_RECT);
 122   factoryCache.SaveShader(shaderType, shader);
 123
 124   return shader;
 125 }
 126
 127 std::string_view ImageVisualShaderFactory::GetVertexShaderSource()
 128 {
 129   // static string variable to cache complete vertex shader
 130   static std::string gVertexShader;
 131   if(gVertexShader.empty())
 132   {
 133     gVertexShader = Dali::Shader::GetVertexShaderPrefix() + SHADER_IMAGE_VISUAL_SHADER_VERT.data();
 134   }
 135
 136   return gVertexShader;
 137 }
 138
 139 std::string_view ImageVisualShaderFactory::GetFragmentShaderSource()
 140 {
 141   // static string variable to cache complete fragment shader (no atlas)
 142   static std::string gFragmentShaderNoAtlas;
 143   if(gFragmentShaderNoAtlas.empty())
 144   {
 145     gFragmentShaderNoAtlas = Dali::Shader::GetFragmentShaderPrefix() + SHADER_IMAGE_VISUAL_SHADER_FRAG.data();
 146   }
 147   return gFragmentShaderNoAtlas;
 148 }
 149
 150 void ImageVisualShaderFactory::GetPrecompiledShader(RawShaderData& shaders)
 151 {
 152   std::vector<std::string_view> vertexPrefix;
 153   std::vector<std::string_view> fragmentPrefix;
 154   shaders.shaderCount = 0;
 155   int shaderCount     = 0;
 156   for(int i = 0; i < SHADER_TYPE_COUNT; ++i)
 157   {
 158     vertexPrefix.push_back(VertexPredefines[i]);
 159     fragmentPrefix.push_back(FragmentPredefines[i]);
 160     shaderCount++;
 161   }
 162
 163   shaders.vertexPrefix   = vertexPrefix;
 164   shaders.fragmentPrefix = fragmentPrefix;
 165   shaders.vertexShader   = SHADER_IMAGE_VISUAL_SHADER_VERT;
 166   shaders.fragmentShader = SHADER_IMAGE_VISUAL_SHADER_FRAG;
 167   shaders.shaderCount    = shaderCount;
 168 }
 169
 170 } // namespace Internal
 171
 172 } // namespace Toolkit
 173
 174 } // namespace Dali