examples/compressed-texture-formats/compressed-texture-formats-example.cpp

   1 /*
   2  * Copyright (c) 2020 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 // EXTERNAL INCLUDES
  19 #include <dali-toolkit/dali-toolkit.h>
  20 #include <dali-toolkit/devel-api/controls/table-view/table-view.h>
  21 #include <dali/dali.h>
  22
  23 // INTERNAL INCLUDES
  24 #include "shared/utility.h"
  25
  26 using namespace Dali;
  27 using Dali::Toolkit::TextLabel;
  28
  29 namespace
  30 {
  31 const char* IMAGE_FILENAME_ETC                = DEMO_IMAGE_DIR "tx-etc1.ktx";
  32 const char* IMAGE_FILENAME_ASTC_LINEAR        = DEMO_IMAGE_DIR "tx-astc-4x4-linear.ktx";
  33 const char* IMAGE_FILENAME_ASTC_LINEAR_NATIVE = DEMO_IMAGE_DIR "tx-astc-4x4-linear-native.astc";
  34
  35 // clang-format off
  36 static const char* VERTEX_SHADER_TEXTURE = DALI_COMPOSE_SHADER(
  37     attribute mediump vec2 aPosition;\n
  38     attribute mediump vec2 aTexCoord;\n
  39     uniform mediump mat4 uMvpMatrix;\n
  40     uniform mediump vec3 uSize;\n
  41     varying mediump vec2 vTexCoord;\n
  42     void main()\n
  43     {\n
  44       vec4 position = vec4(aPosition,0.0,1.0)*vec4(uSize,1.0);\n
  45       gl_Position = uMvpMatrix * position;\n
  46       vTexCoord = aTexCoord;\n
  47     }\n
  48 );
  49
  50 static const char* FRAGMENT_SHADER_TEXTURE = DALI_COMPOSE_SHADER(
  51     uniform lowp vec4 uColor;\n
  52     uniform sampler2D sTexture;\n
  53     varying mediump vec2 vTexCoord;\n
  54
  55     void main()\n
  56     {\n
  57       gl_FragColor = texture2D( sTexture, vTexCoord ) * uColor;\n
  58     }\n
  59 );
  60 // clang-format on
  61
  62 /**
  63  * @brief Create a renderer to render an image and adds it to an actor
  64  * @param[in] imagePath The path where the image file is located
  65  * @param[in] actor The actor that will be used to render the image
  66  * @param[in[ geometry The geometry to use
  67  * @param[in] shader The shader to use
  68  */
  69 void AddImage(const char* imagePath, Actor& actor, Geometry& geometry, Shader& shader)
  70 {
  71   //Load the texture
  72   Texture    texture    = DemoHelper::LoadTexture(imagePath);
  73   TextureSet textureSet = TextureSet::New();
  74   textureSet.SetTexture(0u, texture);
  75
  76   //Create the renderer
  77   Renderer renderer = Renderer::New(geometry, shader);
  78   renderer.SetTextures(textureSet);
  79
  80   //Set actor size and add the renderer
  81   actor.SetProperty(Actor::Property::SIZE, Vector2(texture.GetWidth(), texture.GetHeight()));
  82   actor.AddRenderer(renderer);
  83 }
  84
  85 } // namespace
  86 /**
  87  * @brief This example shows 3 images, each of a different compressed texture type.
  88  * If built and run on a OpenGL ES 3.1 compatable target, then all 3 images will display.
  89  * Otherwise, the top image will display and the other 2 will appear as black squares.
  90  */
  91 class CompressedTextureFormatsController : public ConnectionTracker
  92 {
  93 public:
  94   CompressedTextureFormatsController(Application& application)
  95   : mApplication(application)
  96   {
  97     // Connect to the Application's Init signal
  98     mApplication.InitSignal().Connect(this, &CompressedTextureFormatsController::Create);
  99   }
 100
 101   ~CompressedTextureFormatsController()
 102   {
 103     // Nothing to do here;
 104   }
 105
 106   // The Init signal is received once (only) during the Application lifetime
 107   void Create(Application& application)
 108   {
 109     // Get a handle to the window
 110     Window window = application.GetWindow();
 111     window.SetBackgroundColor(Color::WHITE);
 112
 113     // Setup a TableView to hold a grid of images and labels.
 114     Toolkit::TableView table = Toolkit::TableView::New(3u, 2u);
 115     table.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
 116     table.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
 117     table.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS);
 118     table.SetRelativeWidth(0u, 0.5f);
 119     table.SetRelativeWidth(1u, 0.5f);
 120     table.SetRelativeHeight(0u, 1.0f / 3.0f);
 121     table.SetRelativeHeight(1u, 1.0f / 3.0f);
 122     table.SetRelativeHeight(2u, 1.0f / 3.0f);
 123
 124     // Add text labels.
 125     TextLabel textLabel = TextLabel::New("ETC1 (KTX):");
 126     textLabel.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
 127     textLabel.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
 128     textLabel.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS);
 129     textLabel.SetProperty(Toolkit::TextLabel::Property::MULTI_LINE, true);
 130     table.AddChild(textLabel, Toolkit::TableView::CellPosition(0u, 0u));
 131     table.SetCellAlignment(Toolkit::TableView::CellPosition(0u, 0u), HorizontalAlignment::LEFT, VerticalAlignment::CENTER);
 132
 133     textLabel = TextLabel::New("ASTC (KTX) 4x4 linear:");
 134     textLabel.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
 135     textLabel.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
 136     textLabel.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS);
 137     textLabel.SetProperty(Toolkit::TextLabel::Property::MULTI_LINE, true);
 138     table.AddChild(textLabel, Toolkit::TableView::CellPosition(1u, 0u));
 139     table.SetCellAlignment(Toolkit::TableView::CellPosition(1u, 0u), HorizontalAlignment::LEFT, VerticalAlignment::CENTER);
 140
 141     textLabel = TextLabel::New("ASTC (Native) 4x4 linear:");
 142     textLabel.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
 143     textLabel.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
 144     textLabel.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS);
 145     textLabel.SetProperty(Toolkit::TextLabel::Property::MULTI_LINE, true);
 146     table.AddChild(textLabel, Toolkit::TableView::CellPosition(2u, 0u));
 147     table.SetCellAlignment(Toolkit::TableView::CellPosition(2u, 0u), HorizontalAlignment::LEFT, VerticalAlignment::CENTER);
 148
 149     //Create the geometry and the shader renderers will use
 150     Geometry geometry = DemoHelper::CreateTexturedQuad();
 151     Shader   shader   = Shader::New(VERTEX_SHADER_TEXTURE, FRAGMENT_SHADER_TEXTURE);
 152
 153     // Add images.
 154     Actor actor = Actor::New();
 155     actor.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
 156     actor.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
 157     AddImage(IMAGE_FILENAME_ETC, actor, geometry, shader);
 158     table.AddChild(actor, Toolkit::TableView::CellPosition(0u, 1u));
 159     table.SetCellAlignment(Toolkit::TableView::CellPosition(0u, 1u), HorizontalAlignment::CENTER, VerticalAlignment::CENTER);
 160
 161     actor = Actor::New();
 162     actor.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
 163     actor.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
 164     AddImage(IMAGE_FILENAME_ASTC_LINEAR, actor, geometry, shader);
 165     table.AddChild(actor, Toolkit::TableView::CellPosition(1u, 1u));
 166     table.SetCellAlignment(Toolkit::TableView::CellPosition(1u, 1u), HorizontalAlignment::CENTER, VerticalAlignment::CENTER);
 167
 168     actor = Actor::New();
 169     actor.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
 170     actor.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
 171     AddImage(IMAGE_FILENAME_ASTC_LINEAR_NATIVE, actor, geometry, shader);
 172     table.AddChild(actor, Toolkit::TableView::CellPosition(2u, 1u));
 173     table.SetCellAlignment(Toolkit::TableView::CellPosition(2u, 1u), HorizontalAlignment::CENTER, VerticalAlignment::CENTER);
 174
 175     window.Add(table);
 176
 177     // Respond to touch and key signals
 178     window.GetRootLayer().TouchedSignal().Connect(this, &CompressedTextureFormatsController::OnTouch);
 179     window.KeyEventSignal().Connect(this, &CompressedTextureFormatsController::OnKeyEvent);
 180   }
 181
 182   bool OnTouch(Actor actor, const TouchEvent& touch)
 183   {
 184     // quit the application
 185     mApplication.Quit();
 186     return true;
 187   }
 188
 189   void OnKeyEvent(const KeyEvent& event)
 190   {
 191     if(event.GetState() == KeyEvent::DOWN)
 192     {
 193       if(IsKey(event, Dali::DALI_KEY_ESCAPE) || IsKey(event, Dali::DALI_KEY_BACK))
 194       {
 195         mApplication.Quit();
 196       }
 197     }
 198   }
 199
 200 private:
 201   Application& mApplication;
 202 };
 203
 204 int DALI_EXPORT_API main(int argc, char** argv)
 205 {
 206   Application                        application = Application::New(&argc, &argv);
 207   CompressedTextureFormatsController test(application);
 208   application.MainLoop();
 209   return 0;
 210 }