qt-everywhere-src-5.15.1/qtbase/tests/manual/rhi/floattexture/floattexture.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2018 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 "../shared/examplefw.h"
 #include <qmath.h>

 QByteArray loadHdr(const QString &fn, QSize *size)
 {
     QFile f(fn);
     if (!f.open(QIODevice::ReadOnly)) {
         qWarning("Failed to open %s", qPrintable(fn));
         return QByteArray();
     }

     char sig[256];
     f.read(sig, 11);
     if (strncmp(sig, "#?RADIANCE\n", 11))
         return QByteArray();

     QByteArray buf = f.readAll();
     const char *p = buf.constData();
     const char *pEnd = p + buf.size();

     // Process lines until the empty one.
     QByteArray line;
     while (p < pEnd) {
         char c = *p++;
         if (c == '\n') {
             if (line.isEmpty())
                 break;
             if (line.startsWith(QByteArrayLiteral("FORMAT="))) {
                 const QByteArray format = line.mid(7).trimmed();
                 if (format != QByteArrayLiteral("32-bit_rle_rgbe")) {
                     qWarning("HDR format '%s' is not supported", format.constData());
                     return QByteArray();
                 }
             }
             line.clear();
         } else {
             line.append(c);
         }
     }
     if (p == pEnd) {
         qWarning("Malformed HDR image data at property strings");
         return QByteArray();
     }

     // Get the resolution string.
     while (p < pEnd) {
         char c = *p++;
         if (c == '\n')
             break;
         line.append(c);
     }
     if (p == pEnd) {
         qWarning("Malformed HDR image data at resolution string");
         return QByteArray();
     }

     int w = 0, h = 0;
     // We only care about the standard orientation.
     if (!sscanf(line.constData(), "-Y %d +X %d", &h, &w)) {
         qWarning("Unsupported HDR resolution string '%s'", line.constData());
         return QByteArray();
     }
     if (w <= 0 || h <= 0) {
         qWarning("Invalid HDR resolution");
         return QByteArray();
     }

     // output is RGBA32F
     const int blockSize = 4 * sizeof(float);
     QByteArray data;
     data.resize(w * h * blockSize);

     typedef unsigned char RGBE[4];
     RGBE *scanline = new RGBE[w];

     for (int y = 0; y < h; ++y) {
         if (pEnd - p < 4) {
             qWarning("Unexpected end of HDR data");
             delete[] scanline;
             return QByteArray();
         }

         scanline[0][0] = *p++;
         scanline[0][1] = *p++;
         scanline[0][2] = *p++;
         scanline[0][3] = *p++;

         if (scanline[0][0] == 2 && scanline[0][1] == 2 && scanline[0][2] < 128) {
             // new rle, the first pixel was a dummy
             for (int channel = 0; channel < 4; ++channel) {
                 for (int x = 0; x < w && p < pEnd; ) {
                     unsigned char c = *p++;
                     if (c > 128) { // run
                         if (p < pEnd) {
                             int repCount = c & 127;
                             c = *p++;
                             while (repCount--)
                                 scanline[x++][channel] = c;
                         }
                     } else { // not a run
                         while (c-- && p < pEnd)
                             scanline[x++][channel] = *p++;
                     }
                 }
             }
         } else {
             // old rle
             scanline[0][0] = 2;
             int bitshift = 0;
             int x = 1;
             while (x < w && pEnd - p >= 4) {
                 scanline[x][0] = *p++;
                 scanline[x][1] = *p++;
                 scanline[x][2] = *p++;
                 scanline[x][3] = *p++;

                 if (scanline[x][0] == 1 && scanline[x][1] == 1 && scanline[x][2] == 1) { // run
                     int repCount = scanline[x][3] << bitshift;
                     while (repCount--) {
                         memcpy(scanline[x], scanline[x - 1], 4);
                         ++x;
                     }
                     bitshift += 8;
                 } else { // not a run
                     ++x;
                     bitshift = 0;
                 }
             }
         }

         // adjust for -Y orientation
         float *fp = reinterpret_cast<float *>(data.data() + (h - 1 - y) * blockSize * w);
         for (int x = 0; x < w; ++x) {
             float d = qPow(2.0f, float(scanline[x][3]) - 128.0f);
             // r, g, b, a
             *fp++ = scanline[x][0] / 256.0f * d;
             *fp++ = scanline[x][1] / 256.0f * d;
             *fp++ = scanline[x][2] / 256.0f * d;
             *fp++ = 1.0f;
         }
     }

     delete[] scanline;

     if (size)
         *size = QSize(w, h);

     return data;
 }

 static float vertexData[] =
 { // Y up, CCW
   -0.5f,   0.5f,   0.0f, 0.0f,
   -0.5f,  -0.5f,   0.0f, 1.0f,
   0.5f,   -0.5f,   1.0f, 1.0f,
   0.5f,   0.5f,    1.0f, 0.0f
 };

 static quint16 indexData[] =
 {
     0, 1, 2, 0, 2, 3
 };

 struct {
     QVector<QRhiResource *> releasePool;
     QRhiBuffer *vbuf = nullptr;
     QRhiBuffer *ibuf = nullptr;
     QRhiBuffer *ubuf = nullptr;
     QRhiTexture *tex = nullptr;
     QRhiSampler *sampler = nullptr;
     QRhiShaderResourceBindings *srb = nullptr;
     QRhiGraphicsPipeline *ps = nullptr;
     QRhiResourceUpdateBatch *initialUpdates = nullptr;
     QMatrix4x4 winProj;
 } d;

 void Window::customInit()
 {
     if (!m_r->isTextureFormatSupported(QRhiTexture::RGBA32F))
         qWarning("RGBA32F texture format is not supported");

     QSize size;
     QByteArray floatData = loadHdr(QLatin1String(":/OpenfootageNET_fieldairport-512.hdr"), &size);
     Q_ASSERT(!floatData.isEmpty());
     qDebug() << size;

     d.vbuf = m_r->newBuffer(QRhiBuffer::Immutable, QRhiBuffer::VertexBuffer, sizeof(vertexData));
     d.vbuf->build();
     d.releasePool << d.vbuf;

     d.ibuf = m_r->newBuffer(QRhiBuffer::Immutable, QRhiBuffer::IndexBuffer, sizeof(indexData));
     d.ibuf->build();
     d.releasePool << d.ibuf;

     d.ubuf = m_r->newBuffer(QRhiBuffer::Dynamic, QRhiBuffer::UniformBuffer, 68);
     d.ubuf->build();
     d.releasePool << d.ubuf;

     d.tex = m_r->newTexture(QRhiTexture::RGBA32F, size);
     d.releasePool << d.tex;
     d.tex->build();

     d.sampler = m_r->newSampler(QRhiSampler::Linear, QRhiSampler::Linear, QRhiSampler::None,
                                 QRhiSampler::ClampToEdge, QRhiSampler::ClampToEdge);
     d.releasePool << d.sampler;
     d.sampler->build();

     d.srb = m_r->newShaderResourceBindings();
     d.releasePool << d.srb;
     d.srb->setBindings({
         QRhiShaderResourceBinding::uniformBuffer(0, QRhiShaderResourceBinding::VertexStage | QRhiShaderResourceBinding::FragmentStage, d.ubuf),
         QRhiShaderResourceBinding::sampledTexture(1, QRhiShaderResourceBinding::FragmentStage, d.tex, d.sampler)
     });
     d.srb->build();

     d.ps = m_r->newGraphicsPipeline();
     d.releasePool << d.ps;
     d.ps->setShaderStages({
         { QRhiShaderStage::Vertex, getShader(QLatin1String(":/texture.vert.qsb")) },
         { QRhiShaderStage::Fragment, getShader(QLatin1String(":/texture.frag.qsb")) }
     });
     QRhiVertexInputLayout inputLayout;
     inputLayout.setBindings({
         { 4 * sizeof(float) }
     });
     inputLayout.setAttributes({
         { 0, 0, QRhiVertexInputAttribute::Float2, 0 },
         { 0, 1, QRhiVertexInputAttribute::Float2, 2 * sizeof(float) }
     });
     d.ps->setVertexInputLayout(inputLayout);
     d.ps->setShaderResourceBindings(d.srb);
     d.ps->setRenderPassDescriptor(m_rp);
     d.ps->build();

     d.initialUpdates = m_r->nextResourceUpdateBatch();
     d.initialUpdates->uploadStaticBuffer(d.vbuf, vertexData);
     d.initialUpdates->uploadStaticBuffer(d.ibuf, indexData);

     qint32 flip = 1;
     d.initialUpdates->updateDynamicBuffer(d.ubuf, 64, 4, &flip);

     QRhiTextureUploadDescription desc({ 0, 0, { floatData.constData(), floatData.size() } });
     d.initialUpdates->uploadTexture(d.tex, desc);
 }

 void Window::customRelease()
 {
     qDeleteAll(d.releasePool);
     d.releasePool.clear();
 }

 void Window::customRender()
 {
     QRhiCommandBuffer *cb = m_sc->currentFrameCommandBuffer();
     QRhiResourceUpdateBatch *u = m_r->nextResourceUpdateBatch();
     if (d.initialUpdates) {
         u->merge(d.initialUpdates);
         d.initialUpdates->release();
         d.initialUpdates = nullptr;
     }

     if (d.winProj != m_proj) {
         d.winProj = m_proj;
         QMatrix4x4 mvp = m_proj;
         mvp.scale(2.5f);
         u->updateDynamicBuffer(d.ubuf, 0, 64, mvp.constData());
     }

     const QSize outputSizeInPixels = m_sc->currentPixelSize();
     cb->beginPass(m_sc->currentFrameRenderTarget(), m_clearColor, { 1.0f, 0 }, u);
     cb->setGraphicsPipeline(d.ps);
     cb->setViewport({ 0, 0, float(outputSizeInPixels.width()), float(outputSizeInPixels.height()) });
     cb->setShaderResources();
     const QRhiCommandBuffer::VertexInput vbufBinding(d.vbuf, 0);
     cb->setVertexInput(0, 1, &vbufBinding, d.ibuf, 0, QRhiCommandBuffer::IndexUInt16);
     cb->drawIndexed(6);
     cb->endPass();
 }
	/****************************************************************************
	**
	** Copyright (C) 2018 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 "../shared/examplefw.h"
	#include <qmath.h>

	QByteArray loadHdr(const QString &fn, QSize *size)
	{
	QFile f(fn);
	if (!f.open(QIODevice::ReadOnly)) {
	qWarning("Failed to open %s", qPrintable(fn));
	return QByteArray();
	}

	char sig[256];
	f.read(sig, 11);
	if (strncmp(sig, "#?RADIANCE\n", 11))
	return QByteArray();

	QByteArray buf = f.readAll();
	const char *p = buf.constData();
	const char *pEnd = p + buf.size();

	// Process lines until the empty one.
	QByteArray line;
	while (p < pEnd) {
	char c = *p++;
	if (c == '\n') {
	if (line.isEmpty())
	break;
	if (line.startsWith(QByteArrayLiteral("FORMAT="))) {
	const QByteArray format = line.mid(7).trimmed();
	if (format != QByteArrayLiteral("32-bit_rle_rgbe")) {
	qWarning("HDR format '%s' is not supported", format.constData());
	return QByteArray();
	}
	}
	line.clear();
	} else {
	line.append(c);
	}
	}
	if (p == pEnd) {
	qWarning("Malformed HDR image data at property strings");
	return QByteArray();
	}

	// Get the resolution string.
	while (p < pEnd) {
	char c = *p++;
	if (c == '\n')
	break;
	line.append(c);
	}
	if (p == pEnd) {
	qWarning("Malformed HDR image data at resolution string");
	return QByteArray();
	}

	int w = 0, h = 0;
	// We only care about the standard orientation.
	if (!sscanf(line.constData(), "-Y %d +X %d", &h, &w)) {
	qWarning("Unsupported HDR resolution string '%s'", line.constData());
	return QByteArray();
	}
	if (w <= 0 \|\| h <= 0) {
	qWarning("Invalid HDR resolution");
	return QByteArray();
	}

	// output is RGBA32F
	const int blockSize = 4 * sizeof(float);
	QByteArray data;
	data.resize(w * h * blockSize);

	typedef unsigned char RGBE[4];
	RGBE *scanline = new RGBE[w];

	for (int y = 0; y < h; ++y) {
	if (pEnd - p < 4) {
	qWarning("Unexpected end of HDR data");
	delete[] scanline;
	return QByteArray();
	}

	scanline[0][0] = *p++;
	scanline[0][1] = *p++;
	scanline[0][2] = *p++;
	scanline[0][3] = *p++;

	if (scanline[0][0] == 2 && scanline[0][1] == 2 && scanline[0][2] < 128) {
	// new rle, the first pixel was a dummy
	for (int channel = 0; channel < 4; ++channel) {
	for (int x = 0; x < w && p < pEnd; ) {
	unsigned char c = *p++;
	if (c > 128) { // run
	if (p < pEnd) {
	int repCount = c & 127;
	c = *p++;
	while (repCount--)
	scanline[x++][channel] = c;
	}
	} else { // not a run
	while (c-- && p < pEnd)
	scanline[x++][channel] = *p++;
	}
	}
	}
	} else {
	// old rle
	scanline[0][0] = 2;
	int bitshift = 0;
	int x = 1;
	while (x < w && pEnd - p >= 4) {
	scanline[x][0] = *p++;
	scanline[x][1] = *p++;
	scanline[x][2] = *p++;
	scanline[x][3] = *p++;

	if (scanline[x][0] == 1 && scanline[x][1] == 1 && scanline[x][2] == 1) { // run
	int repCount = scanline[x][3] << bitshift;
	while (repCount--) {
	memcpy(scanline[x], scanline[x - 1], 4);
	++x;
	}
	bitshift += 8;
	} else { // not a run
	++x;
	bitshift = 0;
	}
	}
	}

	// adjust for -Y orientation
	float fp = reinterpret_cast<float >(data.data() + (h - 1 - y) * blockSize * w);
	for (int x = 0; x < w; ++x) {
	float d = qPow(2.0f, float(scanline[x][3]) - 128.0f);
	// r, g, b, a
	fp++ = scanline[x][0] / 256.0f d;
	fp++ = scanline[x][1] / 256.0f d;
	fp++ = scanline[x][2] / 256.0f d;
	*fp++ = 1.0f;
	}
	}

	delete[] scanline;

	if (size)
	*size = QSize(w, h);

	return data;
	}

	static float vertexData[] =
	{ // Y up, CCW
	-0.5f, 0.5f, 0.0f, 0.0f,
	-0.5f, -0.5f, 0.0f, 1.0f,
	0.5f, -0.5f, 1.0f, 1.0f,
	0.5f, 0.5f, 1.0f, 0.0f
	};

	static quint16 indexData[] =
	{
	0, 1, 2, 0, 2, 3
	};

	struct {
	QVector<QRhiResource *> releasePool;
	QRhiBuffer *vbuf = nullptr;
	QRhiBuffer *ibuf = nullptr;
	QRhiBuffer *ubuf = nullptr;
	QRhiTexture *tex = nullptr;
	QRhiSampler *sampler = nullptr;
	QRhiShaderResourceBindings *srb = nullptr;
	QRhiGraphicsPipeline *ps = nullptr;
	QRhiResourceUpdateBatch *initialUpdates = nullptr;
	QMatrix4x4 winProj;
	} d;

	void Window::customInit()
	{
	if (!m_r->isTextureFormatSupported(QRhiTexture::RGBA32F))
	qWarning("RGBA32F texture format is not supported");

	QSize size;
	QByteArray floatData = loadHdr(QLatin1String(":/OpenfootageNET_fieldairport-512.hdr"), &size);
	Q_ASSERT(!floatData.isEmpty());
	qDebug() << size;

	d.vbuf = m_r->newBuffer(QRhiBuffer::Immutable, QRhiBuffer::VertexBuffer, sizeof(vertexData));
	d.vbuf->build();
	d.releasePool << d.vbuf;

	d.ibuf = m_r->newBuffer(QRhiBuffer::Immutable, QRhiBuffer::IndexBuffer, sizeof(indexData));
	d.ibuf->build();
	d.releasePool << d.ibuf;

	d.ubuf = m_r->newBuffer(QRhiBuffer::Dynamic, QRhiBuffer::UniformBuffer, 68);
	d.ubuf->build();
	d.releasePool << d.ubuf;

	d.tex = m_r->newTexture(QRhiTexture::RGBA32F, size);
	d.releasePool << d.tex;
	d.tex->build();

	d.sampler = m_r->newSampler(QRhiSampler::Linear, QRhiSampler::Linear, QRhiSampler::None,
	QRhiSampler::ClampToEdge, QRhiSampler::ClampToEdge);
	d.releasePool << d.sampler;
	d.sampler->build();

	d.srb = m_r->newShaderResourceBindings();
	d.releasePool << d.srb;
	d.srb->setBindings({
	QRhiShaderResourceBinding::uniformBuffer(0, QRhiShaderResourceBinding::VertexStage \| QRhiShaderResourceBinding::FragmentStage, d.ubuf),
	QRhiShaderResourceBinding::sampledTexture(1, QRhiShaderResourceBinding::FragmentStage, d.tex, d.sampler)
	});
	d.srb->build();

	d.ps = m_r->newGraphicsPipeline();
	d.releasePool << d.ps;
	d.ps->setShaderStages({
	{ QRhiShaderStage::Vertex, getShader(QLatin1String(":/texture.vert.qsb")) },
	{ QRhiShaderStage::Fragment, getShader(QLatin1String(":/texture.frag.qsb")) }
	});
	QRhiVertexInputLayout inputLayout;
	inputLayout.setBindings({
	{ 4 * sizeof(float) }
	});
	inputLayout.setAttributes({
	{ 0, 0, QRhiVertexInputAttribute::Float2, 0 },
	{ 0, 1, QRhiVertexInputAttribute::Float2, 2 * sizeof(float) }
	});
	d.ps->setVertexInputLayout(inputLayout);
	d.ps->setShaderResourceBindings(d.srb);
	d.ps->setRenderPassDescriptor(m_rp);
	d.ps->build();

	d.initialUpdates = m_r->nextResourceUpdateBatch();
	d.initialUpdates->uploadStaticBuffer(d.vbuf, vertexData);
	d.initialUpdates->uploadStaticBuffer(d.ibuf, indexData);

	qint32 flip = 1;
	d.initialUpdates->updateDynamicBuffer(d.ubuf, 64, 4, &flip);

	QRhiTextureUploadDescription desc({ 0, 0, { floatData.constData(), floatData.size() } });
	d.initialUpdates->uploadTexture(d.tex, desc);
	}

	void Window::customRelease()
	{
	qDeleteAll(d.releasePool);
	d.releasePool.clear();
	}

	void Window::customRender()
	{
	QRhiCommandBuffer *cb = m_sc->currentFrameCommandBuffer();
	QRhiResourceUpdateBatch *u = m_r->nextResourceUpdateBatch();
	if (d.initialUpdates) {
	u->merge(d.initialUpdates);
	d.initialUpdates->release();
	d.initialUpdates = nullptr;
	}

	if (d.winProj != m_proj) {
	d.winProj = m_proj;
	QMatrix4x4 mvp = m_proj;
	mvp.scale(2.5f);
	u->updateDynamicBuffer(d.ubuf, 0, 64, mvp.constData());
	}

	const QSize outputSizeInPixels = m_sc->currentPixelSize();
	cb->beginPass(m_sc->currentFrameRenderTarget(), m_clearColor, { 1.0f, 0 }, u);
	cb->setGraphicsPipeline(d.ps);
	cb->setViewport({ 0, 0, float(outputSizeInPixels.width()), float(outputSizeInPixels.height()) });
	cb->setShaderResources();
	const QRhiCommandBuffer::VertexInput vbufBinding(d.vbuf, 0);
	cb->setVertexInput(0, 1, &vbufBinding, d.ibuf, 0, QRhiCommandBuffer::IndexUInt16);
	cb->drawIndexed(6);
	cb->endPass();
	}