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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <filament/Camera.h>
#include <filament/Engine.h>
#include <filament/IndexBuffer.h>
#include <filament/Material.h>
#include <filament/MaterialInstance.h>
#include <filament/RenderableManager.h>
#include <filament/Scene.h>
#include <filament/Skybox.h>
#include <filament/TransformManager.h>
#include <filament/VertexBuffer.h>
#include <filament/View.h>
#include <utils/EntityManager.h>
#include <filamentapp/Config.h>
#include <filamentapp/FilamentApp.h>
#include <cmath>
#include "generated/resources/resources.h"
using namespace filament;
using utils::Entity;
using utils::EntityManager;
struct App {
VertexBuffer* vb;
IndexBuffer* ib;
Material* mat;
Camera* cam;
Entity camera;
Skybox* skybox;
Entity whiteTriangle;
Entity colorTriangle;
};
struct Vertex {
filament::math::float2 position;
uint32_t color;
};
static const Vertex TRIANGLE_VERTICES[3] = {
{{1, 0}, 0xffff0000u},
{{cos(M_PI * 2 / 3), sin(M_PI * 2 / 3)}, 0xff00ff00u},
{{cos(M_PI * 4 / 3), sin(M_PI * 4 / 3)}, 0xff0000ffu},
};
static constexpr uint16_t TRIANGLE_INDICES[3] = { 0, 1, 2 };
int main(int argc, char** argv) {
Config config;
config.title = "depthtesting";
App app;
auto setup = [&app](Engine* engine, View* view, Scene* scene) {
app.skybox = Skybox::Builder().color({0.1, 0.125, 0.25, 1.0}).build(*engine);
scene->setSkybox(app.skybox);
app.camera = utils::EntityManager::get().create();
app.cam = engine->createCamera(app.camera);
view->setCamera(app.cam);
view->setPostProcessingEnabled(false);
app.vb = VertexBuffer::Builder()
.vertexCount(3)
.bufferCount(1)
.attribute(VertexAttribute::POSITION, 0, VertexBuffer::AttributeType::FLOAT2, 0, 12)
.attribute(VertexAttribute::COLOR, 0, VertexBuffer::AttributeType::UBYTE4, 8, 12)
.normalized(VertexAttribute::COLOR)
.build(*engine);
app.vb->setBufferAt(*engine, 0,
VertexBuffer::BufferDescriptor(TRIANGLE_VERTICES, 36, nullptr));
app.ib = IndexBuffer::Builder()
.indexCount(3)
.bufferType(IndexBuffer::IndexType::USHORT)
.build(*engine);
app.ib->setBuffer(*engine,
IndexBuffer::BufferDescriptor(TRIANGLE_INDICES, 6, nullptr));
// Create the white triangle with default material.
app.whiteTriangle = EntityManager::get().create();
RenderableManager::Builder(1)
.boundingBox({{ -1, -1, -1 }, { 1, 1, 1 }})
.geometry(0, RenderableManager::PrimitiveType::TRIANGLES, app.vb, app.ib, 0, 3)
.culling(false)
.receiveShadows(false)
.castShadows(false)
.build(*engine, app.whiteTriangle);
scene->addEntity(app.whiteTriangle);
// Create the color triangle with custom material.
app.colorTriangle = EntityManager::get().create();
app.mat = Material::Builder()
.package(RESOURCES_BAKEDCOLOR_DATA, RESOURCES_BAKEDCOLOR_SIZE)
.build(*engine);
RenderableManager::Builder(1)
.boundingBox({{ -1, -1, -1 }, { 1, 1, 1 }})
.material(0, app.mat->getDefaultInstance())
.geometry(0, RenderableManager::PrimitiveType::TRIANGLES, app.vb, app.ib, 0, 3)
.culling(false)
.receiveShadows(false)
.castShadows(false)
.build(*engine, app.colorTriangle);
scene->addEntity(app.colorTriangle);
};
auto cleanup = [&app](Engine* engine, View*, Scene*) {
engine->destroy(app.skybox);
engine->destroy(app.whiteTriangle);
engine->destroy(app.colorTriangle);
engine->destroy(app.mat);
engine->destroy(app.vb);
engine->destroy(app.ib);
engine->destroyCameraComponent(app.camera);
utils::EntityManager::get().destroy(app.camera);
};
FilamentApp::get().animate([&app](Engine* engine, View* view, double now) {
constexpr float ZOOM = 1.5f;
const uint32_t w = view->getViewport().width;
const uint32_t h = view->getViewport().height;
const float aspect = (float) w / h;
app.cam->setProjection(Camera::Projection::ORTHO,
-aspect * ZOOM, aspect * ZOOM,
-ZOOM, ZOOM, -5, 5);
auto& tcm = engine->getTransformManager();
tcm.setTransform(tcm.getInstance(app.colorTriangle),
filament::math::mat4f::rotation(now, filament::math::float3{ 0, 1, 0 }));
});
FilamentApp::get().run(config, setup, cleanup);
return 0;
}
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