diff options
Diffstat (limited to 'tests/manual/rhi/hellominimalcrossgfxtriangle/hellowindow.cpp')
-rw-r--r-- | tests/manual/rhi/hellominimalcrossgfxtriangle/hellowindow.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/tests/manual/rhi/hellominimalcrossgfxtriangle/hellowindow.cpp b/tests/manual/rhi/hellominimalcrossgfxtriangle/hellowindow.cpp new file mode 100644 index 0000000000..96a088adf4 --- /dev/null +++ b/tests/manual/rhi/hellominimalcrossgfxtriangle/hellowindow.cpp @@ -0,0 +1,159 @@ +/**************************************************************************** +** +** Copyright (C) 2020 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 "hellowindow.h" +#include <QFile> +#include <QtGui/private/qshader_p.h> + +static float vertexData[] = { + // Y up (note clipSpaceCorrMatrix in m_proj), CCW + 0.0f, 0.5f, 1.0f, 0.0f, 0.0f, + -0.5f, -0.5f, 0.0f, 1.0f, 0.0f, + 0.5f, -0.5f, 0.0f, 0.0f, 1.0f, +}; + +HelloWindow::HelloWindow(QRhi::Implementation graphicsApi) + : Window(graphicsApi) +{ +} + +QShader HelloWindow::getShader(const QString &name) +{ + QFile f(name); + if (f.open(QIODevice::ReadOnly)) + return QShader::fromSerialized(f.readAll()); + + return QShader(); +} + +void HelloWindow::customInit() +{ + m_vbuf.reset(m_rhi->newBuffer(QRhiBuffer::Immutable, QRhiBuffer::VertexBuffer, sizeof(vertexData))); + m_vbuf->build(); + m_vbufReady = false; + + m_ubuf.reset(m_rhi->newBuffer(QRhiBuffer::Dynamic, QRhiBuffer::UniformBuffer, 68)); + m_ubuf->build(); + + m_srb.reset(m_rhi->newShaderResourceBindings()); + m_srb->setBindings({ + QRhiShaderResourceBinding::uniformBuffer(0, QRhiShaderResourceBinding::VertexStage | QRhiShaderResourceBinding::FragmentStage, + m_ubuf.get()) + }); + m_srb->build(); + + m_ps.reset(m_rhi->newGraphicsPipeline()); + + QRhiGraphicsPipeline::TargetBlend premulAlphaBlend; + premulAlphaBlend.enable = true; + m_ps->setTargetBlends({ premulAlphaBlend }); + + const QShader vs = getShader(QLatin1String(":/color.vert.qsb")); + if (!vs.isValid()) + qFatal("Failed to load shader pack (vertex)"); + const QShader fs = getShader(QLatin1String(":/color.frag.qsb")); + if (!fs.isValid()) + qFatal("Failed to load shader pack (fragment)"); + + m_ps->setShaderStages({ + { QRhiShaderStage::Vertex, vs }, + { QRhiShaderStage::Fragment, fs } + }); + + QRhiVertexInputLayout inputLayout; + inputLayout.setBindings({ + { 5 * sizeof(float) } + }); + inputLayout.setAttributes({ + { 0, 0, QRhiVertexInputAttribute::Float2, 0 }, + { 0, 1, QRhiVertexInputAttribute::Float3, 2 * sizeof(float) } + }); + + m_ps->setVertexInputLayout(inputLayout); + m_ps->setShaderResourceBindings(m_srb.get()); + m_ps->setRenderPassDescriptor(m_rp.get()); + + m_ps->build(); +} + +// called once per frame +void HelloWindow::customRender() +{ + QRhiResourceUpdateBatch *u = m_rhi->nextResourceUpdateBatch(); + if (!m_vbufReady) { + m_vbufReady = true; + u->uploadStaticBuffer(m_vbuf.get(), vertexData); + } + m_rotation += 1.0f; + QMatrix4x4 mvp = m_proj; + mvp.rotate(m_rotation, 0, 1, 0); + u->updateDynamicBuffer(m_ubuf.get(), 0, 64, mvp.constData()); + m_opacity += m_opacityDir * 0.005f; + if (m_opacity < 0.0f || m_opacity > 1.0f) { + m_opacityDir *= -1; + m_opacity = qBound(0.0f, m_opacity, 1.0f); + } + u->updateDynamicBuffer(m_ubuf.get(), 64, 4, &m_opacity); + + QRhiCommandBuffer *cb = m_sc->currentFrameCommandBuffer(); + const QSize outputSizeInPixels = m_sc->currentPixelSize(); + + cb->beginPass(m_sc->currentFrameRenderTarget(), QColor::fromRgbF(0.4f, 0.7f, 0.0f, 1.0f), { 1.0f, 0 }, u); + + cb->setGraphicsPipeline(m_ps.get()); + cb->setViewport({ 0, 0, float(outputSizeInPixels.width()), float(outputSizeInPixels.height()) }); + cb->setShaderResources(); + + const QRhiCommandBuffer::VertexInput vbufBinding(m_vbuf.get(), 0); + cb->setVertexInput(0, 1, &vbufBinding); + cb->draw(3); + + cb->endPass(); +} |