diff options
| author | Hatem ElKharashy <hatem.elkharashy@qt.io> | 2023-06-01 11:34:49 +0300 |
|---|---|---|
| committer | Hatem ElKharashy <hatem.elkharashy@qt.io> | 2023-09-20 10:51:55 +0300 |
| commit | 8dee03500eb491375804cde8fe3c9d8b96bfd4d7 (patch) | |
| tree | f179fa9ed0cbb2d1eb05574a092a489a3989806c /tests/manual/graphicsframecapture/examplewindow.cpp | |
| parent | e456232ad3cef052980a07a0a9a9f5fa49b65ba3 (diff) | |
Add Manual test for Graphics Frame Capture
Simple window with a rotating rectangle that can be
captured using QGraphicsFrameCapture.
Task-number: QTBUG-116146
Change-Id: Ia3b6928e469d926c53260ee40ed5af97dd280c08
Reviewed-by: Janne Koskinen <janne.p.koskinen@qt.io>
Diffstat (limited to 'tests/manual/graphicsframecapture/examplewindow.cpp')
| -rw-r--r-- | tests/manual/graphicsframecapture/examplewindow.cpp | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/tests/manual/graphicsframecapture/examplewindow.cpp b/tests/manual/graphicsframecapture/examplewindow.cpp new file mode 100644 index 00000000000..8a8959541e9 --- /dev/null +++ b/tests/manual/graphicsframecapture/examplewindow.cpp @@ -0,0 +1,116 @@ +// Copyright (C) 2023 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "examplewindow.h" +#include <QFile> +#include <rhi/qshader.h> + +static float vertexData[] = { + // Y up (note clipSpaceCorrMatrix in m_proj), CCW + -0.5f, 0.5f, 1.0f, 0.0f, 0.0f, + -0.5f, -0.5f, 1.0f, 0.0f, 0.0f, + 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, + + 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, + -0.5f, -0.5f, 1.0f, 0.0f, 0.0f, + 0.5f, -0.5f, 1.0f, 0.0f, 0.0f, +}; + +ExampleWindow::ExampleWindow(QRhi::Implementation graphicsApi) + : Window(graphicsApi) +{ +} + +QShader ExampleWindow::getShader(const QString &name) +{ + QFile f(name); + if (f.open(QIODevice::ReadOnly)) + return QShader::fromSerialized(f.readAll()); + + return QShader(); +} + +void ExampleWindow::customInit() +{ + m_vbuf.reset(m_rhi->newBuffer(QRhiBuffer::Immutable, QRhiBuffer::VertexBuffer, sizeof(vertexData))); + m_vbuf->create(); + m_vbufReady = false; + + m_ubuf.reset(m_rhi->newBuffer(QRhiBuffer::Dynamic, QRhiBuffer::UniformBuffer, 68)); + m_ubuf->create(); + + m_srb.reset(m_rhi->newShaderResourceBindings()); + m_srb->setBindings({ + QRhiShaderResourceBinding::uniformBuffer(0, QRhiShaderResourceBinding::VertexStage | QRhiShaderResourceBinding::FragmentStage, + m_ubuf.get()) + }); + m_srb->create(); + + 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->create(); +} + +// called once per frame +void ExampleWindow::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, 0, 1); + 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(0.0f, 0.0f, 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(6); + + cb->endPass(); +} |