examples/rendering-basic-pbr/model-skybox.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 "model-skybox.h"
  20
  21 // EXTERNAL INCLUDES
  22 #include <dali/devel-api/adaptor-framework/file-loader.h>
  23 #include <string.h>
  24 #include <cstdio>
  25
  26 // INTERNAL INCLUDES
  27 #include "generated/skybox-frag.h"
  28 #include "generated/skybox-vert.h"
  29 #include "obj-loader.h"
  30
  31 ModelSkybox::ModelSkybox()
  32 {
  33 }
  34
  35 ModelSkybox::~ModelSkybox()
  36 {
  37 }
  38
  39 void ModelSkybox::Init(const Vector3& size)
  40 {
  41   Geometry geometry = CreateGeometry();
  42   Shader   shader   = Shader::New(SHADER_SKYBOX_VERT, SHADER_SKYBOX_FRAG);
  43
  44   Renderer renderer = Renderer::New(geometry, shader);
  45
  46   if(mTextureSet)
  47   {
  48     renderer.SetTextures(mTextureSet);
  49   }
  50
  51   // Face culling is enabled to hide the backwards facing sides of the model
  52   // This is sufficient to render a single object; for more complex scenes depth-testing might be required
  53   renderer.SetProperty(Renderer::Property::DEPTH_TEST_MODE, DepthTestMode::ON);
  54   renderer.SetProperty(Renderer::Property::DEPTH_WRITE_MODE, DepthWriteMode::ON);
  55   renderer.SetProperty(Renderer::Property::DEPTH_FUNCTION, DepthFunction::LESS_EQUAL);
  56   renderer.SetProperty(Renderer::Property::FACE_CULLING_MODE, FaceCullingMode::BACK);
  57
  58   mActor = Actor::New();
  59   mActor.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
  60   mActor.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
  61   mActor.SetProperty(Actor::Property::SIZE, size);
  62   mActor.AddRenderer(renderer);
  63 }
  64
  65 /**
  66  * Set texture and sampler
  67  */
  68 void ModelSkybox::InitTexture(Texture texSkybox)
  69 {
  70   mTextureSet = TextureSet::New();
  71   mTextureSet.SetTexture(0u, texSkybox);
  72
  73   Sampler sampler = Sampler::New();
  74   sampler.SetWrapMode(WrapMode::CLAMP_TO_EDGE, WrapMode::CLAMP_TO_EDGE, WrapMode::CLAMP_TO_EDGE);
  75   sampler.SetFilterMode(FilterMode::LINEAR_MIPMAP_LINEAR, FilterMode::LINEAR);
  76   mTextureSet.SetSampler(0, sampler);
  77 }
  78
  79 Actor& ModelSkybox::GetActor()
  80 {
  81   return mActor;
  82 }
  83
  84 /**
  85  * @brief CreateGeometry
  86  * This function creates a cube geometry including texture coordinates.
  87  */
  88 Geometry ModelSkybox::CreateGeometry()
  89 {
  90   Geometry geometry;
  91
  92   struct Vertex
  93   {
  94     Vector3 aPosition;
  95   };
  96
  97   Vertex skyboxVertices[] = {
  98     // back
  99     {Vector3(-1.0f, 1.0f, -1.0f)},
 100     {Vector3(-1.0f, -1.0f, -1.0f)},
 101     {Vector3(1.0f, -1.0f, -1.0f)},
 102     {Vector3(1.0f, -1.0f, -1.0f)},
 103     {Vector3(1.0f, 1.0f, -1.0f)},
 104     {Vector3(-1.0f, 1.0f, -1.0f)},
 105
 106     // left
 107     {Vector3(-1.0f, -1.0f, 1.0f)},
 108     {Vector3(-1.0f, -1.0f, -1.0f)},
 109     {Vector3(-1.0f, 1.0f, -1.0f)},
 110     {Vector3(-1.0f, 1.0f, -1.0f)},
 111     {Vector3(-1.0f, 1.0f, 1.0f)},
 112     {Vector3(-1.0f, -1.0f, 1.0f)},
 113
 114     // right
 115     {Vector3(1.0f, -1.0f, -1.0f)},
 116     {Vector3(1.0f, -1.0f, 1.0f)},
 117     {Vector3(1.0f, 1.0f, 1.0f)},
 118     {Vector3(1.0f, 1.0f, 1.0f)},
 119     {Vector3(1.0f, 1.0f, -1.0f)},
 120     {Vector3(1.0f, -1.0f, -1.0f)},
 121
 122     // front
 123     {Vector3(-1.0f, -1.0f, 1.0f)},
 124     {Vector3(-1.0f, 1.0f, 1.0f)},
 125     {Vector3(1.0f, 1.0f, 1.0f)},
 126     {Vector3(1.0f, 1.0f, 1.0f)},
 127     {Vector3(1.0f, -1.0f, 1.0f)},
 128     {Vector3(-1.0f, -1.0f, 1.0f)},
 129
 130     // botton
 131     {Vector3(-1.0f, 1.0f, -1.0f)},
 132     {Vector3(1.0f, 1.0f, -1.0f)},
 133     {Vector3(1.0f, 1.0f, 1.0f)},
 134     {Vector3(1.0f, 1.0f, 1.0f)},
 135     {Vector3(-1.0f, 1.0f, 1.0f)},
 136     {Vector3(-1.0f, 1.0f, -1.0f)},
 137
 138     // top
 139     {Vector3(-1.0f, -1.0f, -1.0f)},
 140     {Vector3(-1.0f, -1.0f, 1.0f)},
 141     {Vector3(1.0f, -1.0f, -1.0f)},
 142     {Vector3(1.0f, -1.0f, -1.0f)},
 143     {Vector3(-1.0f, -1.0f, 1.0f)},
 144     {Vector3(1.0f, -1.0f, 1.0f)}};
 145
 146   VertexBuffer vertexBuffer = VertexBuffer::New(Property::Map()
 147                                                   .Add("aPosition", Property::VECTOR3));
 148   vertexBuffer.SetData(skyboxVertices, sizeof(skyboxVertices) / sizeof(Vertex));
 149
 150   geometry = Geometry::New();
 151   geometry.AddVertexBuffer(vertexBuffer);
 152   geometry.SetType(Geometry::TRIANGLES);
 153   return geometry;
 154 }