From c72b821b5911842757a3929fb287471ad5d457ea Mon Sep 17 00:00:00 2001
From: Laszlo Agocs <laszlo.agocs@qt.io>
Date: Fri, 24 Mar 2017 14:54:24 +0100
Subject: Add the Vulkan cube example

Features a little bit more than a cube, though.

Change-Id: I636d4875ba9ccf722ed3caab97f14570be785748
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
---
 examples/vulkan/hellovulkancubes/shader.cpp | 94 +++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 examples/vulkan/hellovulkancubes/shader.cpp

(limited to 'examples/vulkan/hellovulkancubes/shader.cpp')

diff --git a/examples/vulkan/hellovulkancubes/shader.cpp b/examples/vulkan/hellovulkancubes/shader.cpp
new file mode 100644
index 0000000000..e1c01c6842
--- /dev/null
+++ b/examples/vulkan/hellovulkancubes/shader.cpp
@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "shader.h"
+#include <QtConcurrentRun>
+#include <QFile>
+#include <QVulkanDeviceFunctions>
+
+void Shader::load(QVulkanInstance *inst, VkDevice dev, const QString &fn)
+{
+    reset();
+    m_maybeRunning = true;
+    m_future = QtConcurrent::run([inst, dev, fn]() {
+        ShaderData sd;
+        QFile f(fn);
+        if (!f.open(QIODevice::ReadOnly)) {
+            qWarning("Failed to open %s", qPrintable(fn));
+            return sd;
+        }
+        QByteArray blob = f.readAll();
+        VkShaderModuleCreateInfo shaderInfo;
+        memset(&shaderInfo, 0, sizeof(shaderInfo));
+        shaderInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
+        shaderInfo.codeSize = blob.size();
+        shaderInfo.pCode = reinterpret_cast<const uint32_t *>(blob.constData());
+        VkResult err = inst->deviceFunctions(dev)->vkCreateShaderModule(dev, &shaderInfo, nullptr, &sd.shaderModule);
+        if (err != VK_SUCCESS) {
+            qWarning("Failed to create shader module: %d", err);
+            return sd;
+        }
+        return sd;
+    });
+}
+
+ShaderData *Shader::data()
+{
+    if (m_maybeRunning && !m_data.isValid())
+        m_data = m_future.result();
+
+    return &m_data;
+}
+
+void Shader::reset()
+{
+    *data() = ShaderData();
+    m_maybeRunning = false;
+}
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