From fe74ec3f89f3a8be875de527311b5c91efaeed4a Mon Sep 17 00:00:00 2001
From: Seiji Emery <seijiemery@gmail.com>
Date: Fri, 31 Jul 2015 14:42:45 -0700
Subject: [PATCH] copied starting point from render-utils-test

---
 tests/gpu-test/CMakeLists.txt |  13 ++
 tests/gpu-test/src/main.cpp   | 219 ++++++++++++++++++++++++++++++++++
 2 files changed, 232 insertions(+)
 create mode 100644 tests/gpu-test/CMakeLists.txt
 create mode 100644 tests/gpu-test/src/main.cpp

diff --git a/tests/gpu-test/CMakeLists.txt b/tests/gpu-test/CMakeLists.txt
new file mode 100644
index 0000000000..9f423e3645
--- /dev/null
+++ b/tests/gpu-test/CMakeLists.txt
@@ -0,0 +1,13 @@
+
+set(TARGET_NAME gpu-test)
+ 
+# This is not a testcase -- just set it up as a regular hifi project
+setup_hifi_project(Quick Gui OpenGL)
+set_target_properties(${TARGET_NAME} PROPERTIES FOLDER "Tests/manual-tests/")
+
+#include_oglplus()
+
+# link in the shared libraries
+link_hifi_libraries(render-utils gpu shared)
+
+copy_dlls_beside_windows_executable()
\ No newline at end of file
diff --git a/tests/gpu-test/src/main.cpp b/tests/gpu-test/src/main.cpp
new file mode 100644
index 0000000000..1724e368d8
--- /dev/null
+++ b/tests/gpu-test/src/main.cpp
@@ -0,0 +1,219 @@
+//
+//  main.cpp
+//  tests/gpu-test/src
+//
+//  Copyright 2015 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#include <unordered_map>
+#include <memory>
+
+#include <glm/glm.hpp>
+
+#include <QApplication>
+#include <QDir>
+#include <QElapsedTimer>
+#include <QFile>
+#include <QImage>
+#include <QLoggingCategory>
+
+#include <gpu/Context.h>
+#include <gpu/GLBackend.h>
+
+#include <QOpenGLBuffer>
+#include <QOpenGLContext>
+#include <QOpenGLDebugLogger>
+#include <QOpenGLShaderProgram>
+#include <QOpenGLTexture>
+#include <QOpenGLVertexArrayObject>
+#include <QResizeEvent>
+#include <QTime>
+#include <QTimer>
+#include <QWindow>
+
+
+
+#include <PathUtils.h>
+
+class RateCounter {
+    std::vector<float> times;
+    QElapsedTimer timer;
+public:
+    RateCounter() {
+        timer.start();
+    }
+
+    void reset() {
+        times.clear();
+    }
+
+    unsigned int count() const {
+        return times.size() - 1;
+    }
+
+    float elapsed() const {
+        if (times.size() < 1) {
+            return 0.0f;
+        }
+        float elapsed = *times.rbegin() - *times.begin();
+        return elapsed;
+    }
+
+    void increment() {
+        times.push_back(timer.elapsed() / 1000.0f);
+    }
+
+    float rate() const {
+        if (elapsed() == 0.0f) {
+            return NAN;
+        }
+        return (float) count() / elapsed();
+    }
+};
+
+
+const QString& getQmlDir() {
+    static QString dir;
+    if (dir.isEmpty()) {
+        QDir path(__FILE__);
+        path.cdUp();
+        dir = path.cleanPath(path.absoluteFilePath("../../../interface/resources/qml/")) + "/";
+        qDebug() << "Qml Path: " << dir;
+    }
+    return dir;
+}
+
+// Create a simple OpenGL window that renders text in various ways
+class QTestWindow : public QWindow {
+    Q_OBJECT
+
+    QOpenGLContext* _context{ nullptr };
+    QSize _size;
+    //TextRenderer* _textRenderer[4];
+    RateCounter fps;
+
+protected:
+    void renderText();
+
+private:
+    void resizeWindow(const QSize& size) {
+        _size = size;
+    }
+
+public:
+    QTestWindow() {
+        setSurfaceType(QSurface::OpenGLSurface);
+
+        QSurfaceFormat format;
+        // Qt Quick may need a depth and stencil buffer. Always make sure these are available.
+        format.setDepthBufferSize(16);
+        format.setStencilBufferSize(8);
+        format.setVersion(4, 5);
+        format.setProfile(QSurfaceFormat::OpenGLContextProfile::CompatibilityProfile);
+        format.setOption(QSurfaceFormat::DebugContext);
+
+        setFormat(format);
+
+        _context = new QOpenGLContext;
+        _context->setFormat(format);
+        _context->create();
+
+        show();
+        makeCurrent();
+
+        gpu::Context::init<gpu::GLBackend>();
+
+
+
+        {
+            QOpenGLDebugLogger* logger = new QOpenGLDebugLogger(this);
+            logger->initialize(); // initializes in the current context, i.e. ctx
+            logger->enableMessages();
+            connect(logger, &QOpenGLDebugLogger::messageLogged, this, [&](const QOpenGLDebugMessage & debugMessage) {
+                qDebug() << debugMessage;
+            });
+            //        logger->startLogging(QOpenGLDebugLogger::SynchronousLogging);
+        }
+        qDebug() << (const char*)glGetString(GL_VERSION);
+
+        //_textRenderer[0] = TextRenderer::getInstance(SANS_FONT_FAMILY, 12, false);
+        //_textRenderer[1] = TextRenderer::getInstance(SERIF_FONT_FAMILY, 12, false,
+        //    TextRenderer::SHADOW_EFFECT);
+        //_textRenderer[2] = TextRenderer::getInstance(MONO_FONT_FAMILY, 48, -1,
+        //    false, TextRenderer::OUTLINE_EFFECT);
+        //_textRenderer[3] = TextRenderer::getInstance(INCONSOLATA_FONT_FAMILY, 24);
+
+        glEnable(GL_BLEND);
+        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+        glClearColor(0.2f, 0.2f, 0.2f, 1);
+        glDisable(GL_DEPTH_TEST);
+
+        makeCurrent();
+
+        setFramePosition(QPoint(-1000, 0));
+        resize(QSize(800, 600));
+    }
+
+    virtual ~QTestWindow() {
+    }
+
+    void draw();
+    void makeCurrent() {
+        _context->makeCurrent(this);
+    }
+
+protected:
+
+    void resizeEvent(QResizeEvent* ev) override {
+        resizeWindow(ev->size());
+    }
+};
+
+#ifndef SERIF_FONT_FAMILY
+#define SERIF_FONT_FAMILY "Times New Roman"
+#endif
+
+//static const wchar_t* EXAMPLE_TEXT = L"Hello";
+//static const wchar_t* EXAMPLE_TEXT = L"\xC1y Hello 1.0\ny\xC1 line 2\n\xC1y";
+static const glm::uvec2 QUAD_OFFSET(10, 10);
+
+static const glm::vec3 COLORS[4] = { { 1.0, 1.0, 1.0 }, { 0.5, 1.0, 0.5 }, {
+        1.0, 0.5, 0.5 }, { 0.5, 0.5, 1.0 } };
+
+
+void QTestWindow::draw() {
+    if (!isVisible()) {
+        return;
+    }
+
+    makeCurrent();
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+    glViewport(0, 0, _size.width() * devicePixelRatio(), _size.height() * devicePixelRatio());
+
+    _context->swapBuffers(this);
+    glFinish();
+
+    fps.increment();
+    if (fps.elapsed() >= 2.0f) {
+        qDebug() << "FPS: " << fps.rate();
+        fps.reset();
+    }
+}
+
+int main(int argc, char** argv) {    
+    QGuiApplication app(argc, argv);
+    QTestWindow window;
+    QTimer timer;
+    timer.setInterval(1);
+    app.connect(&timer, &QTimer::timeout, &app, [&] {
+        window.draw();
+    });
+    timer.start();
+    app.exec();
+    return 0;
+}
+
+#include "main.moc"