244 lines
8.6 KiB
C++
244 lines
8.6 KiB
C++
/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "common/arguments.h"
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#include <filament/Camera.h>
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#include <filament/Engine.h>
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#include <filament/IndexBuffer.h>
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#include <filament/Material.h>
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#include <filament/RenderableManager.h>
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#include <filament/Scene.h>
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#include <filament/Skybox.h>
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#include <filament/TransformManager.h>
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#include <filament/VertexBuffer.h>
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#include <filament/SkinningBuffer.h>
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#include <filament/View.h>
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#include <utils/EntityManager.h>
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#include <utils/Path.h>
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#include <getopt/getopt.h>
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#include <filamentapp/Config.h>
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#include <filamentapp/FilamentApp.h>
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#include <cmath>
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#include <iostream>
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#include "generated/resources/resources.h"
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using namespace filament;
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using utils::Entity;
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using utils::EntityManager;
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using utils::Path;
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using namespace filament::math;
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struct App {
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VertexBuffer* vb;
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IndexBuffer* ib;
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Material* mat;
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Camera* cam;
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Entity camera;
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Skybox* skybox;
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Entity renderable;
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MorphTargetBuffer *mt1;
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};
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struct Vertex {
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float2 position;
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uint32_t color;
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};
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static const Vertex TRIANGLE_VERTICES[3] = {
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{{1, 0}, 0xffff0000u}, // blue one (ABGR)
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{{cos(M_PI * 2 / 3), sin(M_PI * 2 / 3)}, 0xff00ff00u}, // green one
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{{cos(M_PI * 4 / 3), sin(M_PI * 4 / 3)}, 0xff0000ffu}, // red one
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};
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static const float3 targets_pos1[9] = {
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{-2, 0, 0},{0, 2, 0},{1, 0, 0}, // 1st position for 1st, 2nd and 3rd point of the first primitive
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{1, 1, 0},{-1, 0, 0},{-1, 0, 0}, // 2nd ...
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{0, 0, 0},{0, 0, 0},{0, 0, 0} // no position change
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};
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static const float3 targets_pos2[9] = {
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{0, 2, 0},{-2, 0, 0},{1, 0, 0}, // 1st position for 1st, 2nd and 3rd point of the second primitive
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{-1, 0, 0},{1, 1, 0},{-1, 0, 0}, // position of th 3rd point is same for both morph targets
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{0, 0, 0},{0, 0, 0}, {0, 0, 0}
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};
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static const short4 targets_tan[9] = {
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{0, 0, 0, 0},{0, 0, 0, 0},{0, 0, 0, 0},
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{0, 0, 0, 0},{0, 0, 0, 0},{0, 0, 0, 0},
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{0, 0, 0, 0},{0, 0, 0, 0},{0, 0, 0, 0}
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};
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static constexpr uint16_t TRIANGLE_INDICES[3] = { 0, 1, 2 };
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static void printUsage(char* name) {
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std::string exec_name(Path(name).getName());
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std::string usage(
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"SAMPLE is a command-line tool for testing Filament skinning buffers.\n"
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"Usage:\n"
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" SAMPLE [options]\n"
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"Options:\n"
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" --help, -h\n"
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" Prints this message\n\n"
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"API_USAGE"
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);
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const std::string from("SAMPLE");
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for (size_t pos = usage.find(from); pos != std::string::npos; pos = usage.find(from, pos)) {
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usage.replace(pos, from.length(), exec_name);
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}
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const std::string apiUsage("API_USAGE");
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for (size_t pos = usage.find(apiUsage); pos != std::string::npos; pos = usage.find(apiUsage, pos)) {
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usage.replace(pos, apiUsage.length(), samples::getBackendAPIArgumentsUsage());
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}
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std::cout << usage;
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}
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static int handleCommandLineArgments(int argc, char* argv[], Config* config) {
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static constexpr const char* OPTSTR = "ha:";
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static const struct option OPTIONS[] = {
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{ "help", no_argument, nullptr, 'h' },
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{ "api", required_argument, nullptr, 'a' },
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{ nullptr, 0, nullptr, 0 } // termination of the option list
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};
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int opt;
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int option_index = 0;
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while ((opt = getopt_long(argc, argv, OPTSTR, OPTIONS, &option_index)) >= 0) {
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std::string arg(optarg != nullptr ? optarg : "");
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switch (opt) {
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default:
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case 'h':
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printUsage(argv[0]);
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exit(0);
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case 'a':
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config->backend = samples::parseArgumentsForBackend(arg);
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break;
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}
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}
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return optind;
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}
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int main(int argc, char** argv) {
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Config config;
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config.title = "helloMorphing";
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handleCommandLineArgments(argc, argv, &config);
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App app;
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auto setup = [&app](Engine* engine, View* view, Scene* scene) {
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app.skybox = Skybox::Builder().color({0.1, 0.125, 0.25, 1.0}).build(*engine);
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scene->setSkybox(app.skybox);
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view->setPostProcessingEnabled(false);
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static_assert(sizeof(Vertex) == 12, "Strange vertex size.");
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app.vb = VertexBuffer::Builder()
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.vertexCount(3)
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.bufferCount(1)
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.attribute(VertexAttribute::POSITION, 0, VertexBuffer::AttributeType::FLOAT2, 0, 12)
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.attribute(VertexAttribute::COLOR, 0, VertexBuffer::AttributeType::UBYTE4, 8, 12)
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.normalized(VertexAttribute::COLOR)
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.build(*engine);
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app.vb->setBufferAt(*engine, 0,
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VertexBuffer::BufferDescriptor(TRIANGLE_VERTICES, 36, nullptr));
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app.ib = IndexBuffer::Builder()
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.indexCount(3)
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.bufferType(IndexBuffer::IndexType::USHORT)
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.build(*engine);
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app.ib->setBuffer(*engine,
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IndexBuffer::BufferDescriptor(TRIANGLE_INDICES, 6, nullptr));
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app.mat = Material::Builder()
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.package(RESOURCES_BAKEDCOLOR_DATA, RESOURCES_BAKEDCOLOR_SIZE)
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.build(*engine);
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app.mt1 = MorphTargetBuffer::Builder()
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.vertexCount(9 * 2)
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.count(3)
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.build(*engine);
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app.mt1->setPositionsAt(*engine,0, targets_pos1, 3, 0);
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app.mt1->setPositionsAt(*engine,1, targets_pos1+3, 3, 0);
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app.mt1->setPositionsAt(*engine,2, targets_pos1+6, 3, 0);
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app.mt1->setTangentsAt(*engine,0, targets_tan, 3, 0);
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app.mt1->setTangentsAt(*engine,1, targets_tan+3, 3, 0);
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app.mt1->setTangentsAt(*engine,2, targets_tan+6, 3, 0);
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app.mt1->setPositionsAt(*engine,0, targets_pos2, 3, 9);
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app.mt1->setPositionsAt(*engine,1, targets_pos2+3, 3, 9);
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app.mt1->setPositionsAt(*engine,2, targets_pos2+6, 3, 9);
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app.mt1->setTangentsAt(*engine,0, targets_tan, 3, 9);
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app.mt1->setTangentsAt(*engine,1, targets_tan+3, 3, 9);
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app.mt1->setTangentsAt(*engine,2, targets_tan+6, 3, 9);
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app.renderable = EntityManager::get().create();
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RenderableManager::Builder(2)
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.boundingBox({{ -1, -1, -1 }, { 1, 1, 1 }})
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.material(0, app.mat->getDefaultInstance())
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.material(1, app.mat->getDefaultInstance())
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.geometry(0, RenderableManager::PrimitiveType::TRIANGLES, app.vb, app.ib, 0, 3)
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.geometry(1, RenderableManager::PrimitiveType::TRIANGLES, app.vb, app.ib, 0, 3)
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.culling(false)
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.receiveShadows(false)
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.castShadows(false)
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.morphing(app.mt1)
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.morphing(0, 0, 0)
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.morphing(0, 1, 9)
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.build(*engine, app.renderable);
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scene->addEntity(app.renderable);
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app.camera = utils::EntityManager::get().create();
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app.cam = engine->createCamera(app.camera);
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view->setCamera(app.cam);
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};
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auto cleanup = [&app](Engine* engine, View*, Scene*) {
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engine->destroy(app.skybox);
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engine->destroy(app.renderable);
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engine->destroy(app.mat);
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engine->destroy(app.vb);
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engine->destroy(app.ib);
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engine->destroy(app.mt1);
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engine->destroyCameraComponent(app.camera);
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utils::EntityManager::get().destroy(app.camera);
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};
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FilamentApp::get().animate([&app](Engine* engine, View* view, double now) {
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constexpr float ZOOM = 1.5f;
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const uint32_t w = view->getViewport().width;
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const uint32_t h = view->getViewport().height;
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const float aspect = (float) w / h;
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app.cam->setProjection(Camera::Projection::ORTHO,
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-aspect * ZOOM, aspect * ZOOM,
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-ZOOM, ZOOM, 0, 1);
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auto& rm = engine->getRenderableManager();
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// morphTarget/blendshapes animation defined for all primitives
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float z = (float)(sin(now)/2.f + 0.5f);
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float weights[] = {1 - z, z/2, z/2};
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// set global weights of all morph targets
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rm.setMorphWeights(rm.getInstance(app.renderable), weights, 3, 0);
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});
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FilamentApp::get().run(config, setup, cleanup);
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return 0;
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}
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