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 {
  46   "", // VisualFactoryCache::IMAGE_SHADER,
  47   "#define IS_REQUIRED_ROUNDED_CORNER\n", //VisualFactoryCache::IMAGE_SHADER_ROUNDED_CORNER,
  48   "",//VisualFactoryCache::IMAGE_SHADER_YUV_TO_RGB,
  49   "#define IS_REQUIRED_ROUNDED_CORNER\n",//VisualFactoryCache::IMAGE_SHADER_ROUNDED_CORNER_YUV_TO_RGB,
  50   "",//VisualFactoryCache::IMAGE_SHADER_YUV_AND_RGB,
  51   "#define IS_REQUIRED_ROUNDED_CORNER\n",//VisualFactoryCache::IMAGE_SHADER_ROUNDED_CORNER_YUV_AND_RGB,
  52 };
  53 const std::string_view FragmentPredefines[SHADER_TYPE_COUNT]
  54 {
  55   "", // VisualFactoryCache::IMAGE_SHADER,
  56   "#define IS_REQUIRED_ROUNDED_CORNER\n", //VisualFactoryCache::IMAGE_SHADER_ROUNDED_CORNER,
  57   "#define IS_REQUIRED_YUV_TO_RGB\n",//VisualFactoryCache::IMAGE_SHADER_YUV_TO_RGB,
  58   "#define IS_REQUIRED_YUV_TO_RGB\n#define IS_REQUIRED_ROUNDED_CORNER\n",//VisualFactoryCache::IMAGE_SHADER_ROUNDED_CORNER_YUV_TO_RGB,
  59   "#define IS_REQUIRED_UNIFIED_YUV_AND_RGB\n",//VisualFactoryCache::IMAGE_SHADER_YUV_AND_RGB,
  60   "#define IS_REQUIRED_UNIFIED_YUV_AND_RGB\n#define IS_REQUIRED_ROUNDED_CORNER\n",//VisualFactoryCache::IMAGE_SHADER_ROUNDED_CORNER_YUV_AND_RGB,
  61 };
  62
  63 ImageVisualShaderFactory::ImageVisualShaderFactory()
  64 : mFragmentShaderNeedChange(ImageVisualShaderFeature::ChangeFragmentShader::UNDECIDED)
  65 {
  66 }
  67
  68 ImageVisualShaderFactory::~ImageVisualShaderFactory()
  69 {
  70 }
  71
  72 Shader ImageVisualShaderFactory::GetShader(VisualFactoryCache& factoryCache, ImageVisualShaderFeatureBuilder& featureBuilder)
  73 {
  74   Shader                         shader;
  75   VisualFactoryCache::ShaderType shaderType = featureBuilder.GetShaderType();
  76
  77   if(featureBuilder.NeedToChangeFragmentShader() == ImageVisualShaderFeature::ChangeFragmentShader::NEED_CHANGE &&
  78      (mFragmentShaderNeedChange == ImageVisualShaderFeature::ChangeFragmentShader::UNDECIDED ||
  79       mFragmentShaderNeedChange == ImageVisualShaderFeature::ChangeFragmentShader::NEED_CHANGE))
  80   {
  81     shaderType = static_cast<VisualFactoryCache::ShaderType>(static_cast<int>(shaderType) + NATIVE_SHADER_TYPE_OFFSET);
  82   }
  83
  84   shader = factoryCache.GetShader(shaderType);
  85   if(shader)
  86   {
  87     return shader;
  88   }
  89
  90   std::string vertexShaderPrefixList;
  91   std::string fragmentShaderPrefixList;
  92   featureBuilder.GetVertexShaderPrefixList(vertexShaderPrefixList);
  93   featureBuilder.GetFragmentShaderPrefixList(fragmentShaderPrefixList);
  94
  95   std::string vertexShader   = std::string(Dali::Shader::GetVertexShaderPrefix() + vertexShaderPrefixList + SHADER_IMAGE_VISUAL_SHADER_VERT.data());
  96   std::string fragmentShader = std::string(Dali::Shader::GetFragmentShaderPrefix() + fragmentShaderPrefixList + SHADER_IMAGE_VISUAL_SHADER_FRAG.data());
  97
  98   if(featureBuilder.NeedToChangeFragmentShader() == ImageVisualShaderFeature::ChangeFragmentShader::NEED_CHANGE)
  99   {
 100     bool modified = DevelTexture::ApplyNativeFragmentShader(featureBuilder.GetTexture(), fragmentShader);
 101     if(mFragmentShaderNeedChange == ImageVisualShaderFeature::ChangeFragmentShader::NEED_CHANGE)
 102     {
 103       DALI_ASSERT_ALWAYS(modified && "NativeImageTexture need to change fragment shader. But DALI default image shader doesn't changed!");
 104     }
 105     else if(DALI_UNLIKELY(mFragmentShaderNeedChange == ImageVisualShaderFeature::ChangeFragmentShader::UNDECIDED))
 106     {
 107       mFragmentShaderNeedChange = (modified) ? ImageVisualShaderFeature::ChangeFragmentShader::NEED_CHANGE : ImageVisualShaderFeature::ChangeFragmentShader::DONT_CHANGE;
 108
 109       if(mFragmentShaderNeedChange == ImageVisualShaderFeature::ChangeFragmentShader::DONT_CHANGE)
 110       {
 111         shaderType = static_cast<VisualFactoryCache::ShaderType>(static_cast<int>(shaderType) - NATIVE_SHADER_TYPE_OFFSET);
 112         shader     = factoryCache.GetShader(shaderType);
 113       }
 114     }
 115   }
 116
 117   if(shader)
 118   {
 119     return shader;
 120   }
 121
 122   shader = Shader::New(vertexShader, fragmentShader);
 123   shader.RegisterProperty(PIXEL_AREA_UNIFORM_NAME, FULL_TEXTURE_RECT);
 124   factoryCache.SaveShader(shaderType, shader);
 125
 126   return shader;
 127 }
 128
 129 std::string_view ImageVisualShaderFactory::GetVertexShaderSource()
 130 {
 131   // static string variable to cache complete vertex shader
 132   static std::string gVertexShader;
 133   if(gVertexShader.empty())
 134   {
 135     gVertexShader = Dali::Shader::GetVertexShaderPrefix() + SHADER_IMAGE_VISUAL_SHADER_VERT.data();
 136   }
 137
 138   return gVertexShader;
 139 }
 140
 141 std::string_view ImageVisualShaderFactory::GetFragmentShaderSource()
 142 {
 143   // static string variable to cache complete fragment shader (no atlas)
 144   static std::string gFragmentShaderNoAtlas;
 145   if(gFragmentShaderNoAtlas.empty())
 146   {
 147     gFragmentShaderNoAtlas = Dali::Shader::GetFragmentShaderPrefix() + SHADER_IMAGE_VISUAL_SHADER_FRAG.data();
 148   }
 149   return gFragmentShaderNoAtlas;
 150 }
 151
 152 void ImageVisualShaderFactory::GetPreCompiledShader(RawShaderData& shaders)
 153 {
 154   std::vector<std::string_view> vertexPrefix;
 155   std::vector<std::string_view> fragmentPrefix;
 156   shaders.shaderCount = 0;
 157   int shaderCount = 0;
 158   for(uint32_t i=0; i< SHADER_TYPE_COUNT; ++i)
 159   {
 160     vertexPrefix.push_back(VertexPredefines[i]);
 161     fragmentPrefix.push_back(FragmentPredefines[i]);
 162     shaderCount++;
 163   }
 164
 165   shaders.vertexPrefix= vertexPrefix;
 166   shaders.fragmentPrefix = fragmentPrefix;
 167   shaders.vertexShader = SHADER_IMAGE_VISUAL_SHADER_VERT;
 168   shaders.fragmentShader = SHADER_IMAGE_VISUAL_SHADER_FRAG;
 169   shaders.shaderCount = shaderCount;
 170 }
 171
 172 } // namespace Internal
 173
 174 } // namespace Toolkit
 175
 176 } // namespace Dali