qt-everywhere-src-5.15.1/qtbase/tests/manual/rhi/mrt/mrt.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"

 // Exercises MRT, by attaching 4 textures to a single QRhiTextureRenderTarget.
 // The fragment shader outputs to all four targets.
 // The textures are then used to render 4 quads, so their contents can be confirmed.

 const int ATTCOUNT = 4;

 static float quadVertexData[] =
 { // 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 quadIndexData[] =
 {
     0, 1, 2, 0, 2, 3
 };

 static float triangleData[] =
 { // Y up, 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,
 };

 struct {
     QVector<QRhiResource *> releasePool;
     QRhiBuffer *vbuf = nullptr;
     QRhiBuffer *ibuf = nullptr;
     QRhiBuffer *ubuf = nullptr;
     QRhiTextureRenderTarget *rt = nullptr;
     QRhiRenderPassDescriptor *rtRp = nullptr;
     QRhiSampler *sampler = nullptr;
     QRhiGraphicsPipeline *ps = nullptr;
     QRhiResourceUpdateBatch *initialUpdates = nullptr;
     QMatrix4x4 winProj;
     struct PerColorBuffer {
         QRhiTexture *tex = nullptr;
         QRhiShaderResourceBindings *srb = nullptr;
     };
     PerColorBuffer colData[ATTCOUNT];

     QRhiBuffer *triUbuf = nullptr;
     QRhiShaderResourceBindings *triSrb = nullptr;
     QRhiGraphicsPipeline *triPs = nullptr;
     float triRot = 0;
     QMatrix4x4 triBaseMvp;
 } d;

 void Window::customInit()
 {
     qDebug("Max color attachments: %d", m_r->resourceLimit(QRhi::MaxColorAttachments));
     if (m_r->resourceLimit(QRhi::MaxColorAttachments) < 4)
         qWarning("MRT is not supported");

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

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

     const int oneRoundedUniformBlockSize = m_r->ubufAligned(68);
     d.ubuf = m_r->newBuffer(QRhiBuffer::Dynamic, QRhiBuffer::UniformBuffer, oneRoundedUniformBlockSize * ATTCOUNT);
     d.ubuf->build();
     d.releasePool << d.ubuf;

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

     for (int i = 0; i < ATTCOUNT; ++i) {
         QRhiTexture *tex = m_r->newTexture(QRhiTexture::RGBA8, QSize(512, 512), 1, QRhiTexture::RenderTarget);
         d.releasePool << tex;
         tex->build();

         QRhiShaderResourceBindings *srb = m_r->newShaderResourceBindings();
         d.releasePool << srb;
         srb->setBindings({
             QRhiShaderResourceBinding::uniformBuffer(0, QRhiShaderResourceBinding::VertexStage | QRhiShaderResourceBinding::FragmentStage,
                              d.ubuf, i * oneRoundedUniformBlockSize, 68),
             QRhiShaderResourceBinding::sampledTexture(1, QRhiShaderResourceBinding::FragmentStage, tex, d.sampler)
         });
         srb->build();

         d.colData[i].tex = tex;
         d.colData[i].srb = srb;
     }

     QRhiTextureRenderTargetDescription rtDesc;
     QRhiColorAttachment att[ATTCOUNT];
     for (int i = 0; i < ATTCOUNT; ++i)
         att[i] = QRhiColorAttachment(d.colData[i].tex);
     rtDesc.setColorAttachments(att, att + ATTCOUNT);
     d.rt = m_r->newTextureRenderTarget(rtDesc);
     d.releasePool << d.rt;
     d.rtRp = d.rt->newCompatibleRenderPassDescriptor();
     d.releasePool << d.rtRp;
     d.rt->setRenderPassDescriptor(d.rtRp);
     d.rt->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.colData[0].srb); // all of them are layout-compatible
     d.ps->setRenderPassDescriptor(m_rp);
     d.ps->build();

     d.initialUpdates = m_r->nextResourceUpdateBatch();
     d.initialUpdates->uploadStaticBuffer(d.vbuf, 0, sizeof(quadVertexData), quadVertexData);
     d.initialUpdates->uploadStaticBuffer(d.vbuf, sizeof(quadVertexData), sizeof(triangleData), triangleData);
     d.initialUpdates->uploadStaticBuffer(d.ibuf, quadIndexData);

     qint32 flip = m_r->isYUpInFramebuffer() ? 1 : 0;
     for (int i = 0; i < ATTCOUNT; ++i)
         d.initialUpdates->updateDynamicBuffer(d.ubuf, i * oneRoundedUniformBlockSize + 64, 4, &flip);

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

     d.triSrb = m_r->newShaderResourceBindings();
     d.releasePool << d.triSrb;
     d.triSrb->setBindings({
         QRhiShaderResourceBinding::uniformBuffer(0, QRhiShaderResourceBinding::VertexStage | QRhiShaderResourceBinding::FragmentStage, d.triUbuf)
     });
     d.triSrb->build();

     d.triPs = m_r->newGraphicsPipeline();
     d.releasePool << d.triPs;
     d.triPs->setShaderStages({
         { QRhiShaderStage::Vertex, getShader(QLatin1String(":/mrt.vert.qsb")) },
         { QRhiShaderStage::Fragment, getShader(QLatin1String(":/mrt.frag.qsb")) }
     });

     QRhiGraphicsPipeline::TargetBlend blends[ATTCOUNT]; // defaults to blending == false
     d.triPs->setTargetBlends(blends, blends + ATTCOUNT);

     inputLayout.setBindings({
         { 5 * sizeof(float) }
     });
     inputLayout.setAttributes({
         { 0, 0, QRhiVertexInputAttribute::Float2, 0 },
         { 0, 1, QRhiVertexInputAttribute::Float3, 2 * sizeof(float) }
     });
     d.triPs->setVertexInputLayout(inputLayout);
     d.triPs->setShaderResourceBindings(d.triSrb);
     d.triPs->setRenderPassDescriptor(d.rtRp);
     d.triPs->build();

     d.triBaseMvp = m_r->clipSpaceCorrMatrix();
     d.triBaseMvp.perspective(45.0f, d.rt->pixelSize().width() / float(d.rt->pixelSize().height()), 0.01f, 1000.0f);
     d.triBaseMvp.translate(0, 0, -2);
     float opacity = 1.0f;
     d.initialUpdates->updateDynamicBuffer(d.triUbuf, 64, 4, &opacity);
 }

 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;
     }

     QMatrix4x4 triMvp = d.triBaseMvp;
     triMvp.rotate(d.triRot, 0, 1, 0);
     d.triRot += 1;
     u->updateDynamicBuffer(d.triUbuf, 0, 64, triMvp.constData());

     cb->beginPass(d.rt, QColor::fromRgbF(0.5f, 0.2f, 0.0f, 1.0f), { 1.0f, 0 }, u);
     cb->setGraphicsPipeline(d.triPs);
     cb->setViewport({ 0, 0, float(d.rt->pixelSize().width()), float(d.rt->pixelSize().height()) });
     cb->setShaderResources();
     QRhiCommandBuffer::VertexInput vbufBinding(d.vbuf, sizeof(quadVertexData));
     cb->setVertexInput(0, 1, &vbufBinding);
     cb->draw(3);
     cb->endPass();

     u = m_r->nextResourceUpdateBatch();
     if (d.winProj != m_proj) {
         d.winProj = m_proj;
         const int oneRoundedUniformBlockSize = m_r->ubufAligned(68);
         for (int i = 0; i < ATTCOUNT; ++i) {
             QMatrix4x4 mvp = m_proj;
             switch (i) {
             case 0:
                 mvp.translate(-2.0f, 0, 0);
                 break;
             case 1:
                 mvp.translate(-0.8f, 0, 0);
                 break;
             case 2:
                 mvp.translate(0.4f, 0, 0);
                 break;
             case 3:
                 mvp.translate(1.6f, 0, 0);
                 break;
             default:
                 Q_UNREACHABLE();
                 break;
             }
             u->updateDynamicBuffer(d.ubuf, i * oneRoundedUniformBlockSize, 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()) });
     vbufBinding.second = 0;
     cb->setVertexInput(0, 1, &vbufBinding, d.ibuf, 0, QRhiCommandBuffer::IndexUInt16);
     for (int i = 0; i < ATTCOUNT; ++i) {
         cb->setShaderResources(d.colData[i].srb);
         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"

	// Exercises MRT, by attaching 4 textures to a single QRhiTextureRenderTarget.
	// The fragment shader outputs to all four targets.
	// The textures are then used to render 4 quads, so their contents can be confirmed.

	const int ATTCOUNT = 4;

	static float quadVertexData[] =
	{ // 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 quadIndexData[] =
	{
	0, 1, 2, 0, 2, 3
	};

	static float triangleData[] =
	{ // Y up, 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,
	};

	struct {
	QVector<QRhiResource *> releasePool;
	QRhiBuffer *vbuf = nullptr;
	QRhiBuffer *ibuf = nullptr;
	QRhiBuffer *ubuf = nullptr;
	QRhiTextureRenderTarget *rt = nullptr;
	QRhiRenderPassDescriptor *rtRp = nullptr;
	QRhiSampler *sampler = nullptr;
	QRhiGraphicsPipeline *ps = nullptr;
	QRhiResourceUpdateBatch *initialUpdates = nullptr;
	QMatrix4x4 winProj;
	struct PerColorBuffer {
	QRhiTexture *tex = nullptr;
	QRhiShaderResourceBindings *srb = nullptr;
	};
	PerColorBuffer colData[ATTCOUNT];

	QRhiBuffer *triUbuf = nullptr;
	QRhiShaderResourceBindings *triSrb = nullptr;
	QRhiGraphicsPipeline *triPs = nullptr;
	float triRot = 0;
	QMatrix4x4 triBaseMvp;
	} d;

	void Window::customInit()
	{
	qDebug("Max color attachments: %d", m_r->resourceLimit(QRhi::MaxColorAttachments));
	if (m_r->resourceLimit(QRhi::MaxColorAttachments) < 4)
	qWarning("MRT is not supported");

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

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

	const int oneRoundedUniformBlockSize = m_r->ubufAligned(68);
	d.ubuf = m_r->newBuffer(QRhiBuffer::Dynamic, QRhiBuffer::UniformBuffer, oneRoundedUniformBlockSize * ATTCOUNT);
	d.ubuf->build();
	d.releasePool << d.ubuf;

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

	for (int i = 0; i < ATTCOUNT; ++i) {
	QRhiTexture *tex = m_r->newTexture(QRhiTexture::RGBA8, QSize(512, 512), 1, QRhiTexture::RenderTarget);
	d.releasePool << tex;
	tex->build();

	QRhiShaderResourceBindings *srb = m_r->newShaderResourceBindings();
	d.releasePool << srb;
	srb->setBindings({
	QRhiShaderResourceBinding::uniformBuffer(0, QRhiShaderResourceBinding::VertexStage \| QRhiShaderResourceBinding::FragmentStage,
	d.ubuf, i * oneRoundedUniformBlockSize, 68),
	QRhiShaderResourceBinding::sampledTexture(1, QRhiShaderResourceBinding::FragmentStage, tex, d.sampler)
	});
	srb->build();

	d.colData[i].tex = tex;
	d.colData[i].srb = srb;
	}

	QRhiTextureRenderTargetDescription rtDesc;
	QRhiColorAttachment att[ATTCOUNT];
	for (int i = 0; i < ATTCOUNT; ++i)
	att[i] = QRhiColorAttachment(d.colData[i].tex);
	rtDesc.setColorAttachments(att, att + ATTCOUNT);
	d.rt = m_r->newTextureRenderTarget(rtDesc);
	d.releasePool << d.rt;
	d.rtRp = d.rt->newCompatibleRenderPassDescriptor();
	d.releasePool << d.rtRp;
	d.rt->setRenderPassDescriptor(d.rtRp);
	d.rt->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.colData[0].srb); // all of them are layout-compatible
	d.ps->setRenderPassDescriptor(m_rp);
	d.ps->build();

	d.initialUpdates = m_r->nextResourceUpdateBatch();
	d.initialUpdates->uploadStaticBuffer(d.vbuf, 0, sizeof(quadVertexData), quadVertexData);
	d.initialUpdates->uploadStaticBuffer(d.vbuf, sizeof(quadVertexData), sizeof(triangleData), triangleData);
	d.initialUpdates->uploadStaticBuffer(d.ibuf, quadIndexData);

	qint32 flip = m_r->isYUpInFramebuffer() ? 1 : 0;
	for (int i = 0; i < ATTCOUNT; ++i)
	d.initialUpdates->updateDynamicBuffer(d.ubuf, i * oneRoundedUniformBlockSize + 64, 4, &flip);

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

	d.triSrb = m_r->newShaderResourceBindings();
	d.releasePool << d.triSrb;
	d.triSrb->setBindings({
	QRhiShaderResourceBinding::uniformBuffer(0, QRhiShaderResourceBinding::VertexStage \| QRhiShaderResourceBinding::FragmentStage, d.triUbuf)
	});
	d.triSrb->build();

	d.triPs = m_r->newGraphicsPipeline();
	d.releasePool << d.triPs;
	d.triPs->setShaderStages({
	{ QRhiShaderStage::Vertex, getShader(QLatin1String(":/mrt.vert.qsb")) },
	{ QRhiShaderStage::Fragment, getShader(QLatin1String(":/mrt.frag.qsb")) }
	});

	QRhiGraphicsPipeline::TargetBlend blends[ATTCOUNT]; // defaults to blending == false
	d.triPs->setTargetBlends(blends, blends + ATTCOUNT);

	inputLayout.setBindings({
	{ 5 * sizeof(float) }
	});
	inputLayout.setAttributes({
	{ 0, 0, QRhiVertexInputAttribute::Float2, 0 },
	{ 0, 1, QRhiVertexInputAttribute::Float3, 2 * sizeof(float) }
	});
	d.triPs->setVertexInputLayout(inputLayout);
	d.triPs->setShaderResourceBindings(d.triSrb);
	d.triPs->setRenderPassDescriptor(d.rtRp);
	d.triPs->build();

	d.triBaseMvp = m_r->clipSpaceCorrMatrix();
	d.triBaseMvp.perspective(45.0f, d.rt->pixelSize().width() / float(d.rt->pixelSize().height()), 0.01f, 1000.0f);
	d.triBaseMvp.translate(0, 0, -2);
	float opacity = 1.0f;
	d.initialUpdates->updateDynamicBuffer(d.triUbuf, 64, 4, &opacity);
	}

	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;
	}

	QMatrix4x4 triMvp = d.triBaseMvp;
	triMvp.rotate(d.triRot, 0, 1, 0);
	d.triRot += 1;
	u->updateDynamicBuffer(d.triUbuf, 0, 64, triMvp.constData());

	cb->beginPass(d.rt, QColor::fromRgbF(0.5f, 0.2f, 0.0f, 1.0f), { 1.0f, 0 }, u);
	cb->setGraphicsPipeline(d.triPs);
	cb->setViewport({ 0, 0, float(d.rt->pixelSize().width()), float(d.rt->pixelSize().height()) });
	cb->setShaderResources();
	QRhiCommandBuffer::VertexInput vbufBinding(d.vbuf, sizeof(quadVertexData));
	cb->setVertexInput(0, 1, &vbufBinding);
	cb->draw(3);
	cb->endPass();

	u = m_r->nextResourceUpdateBatch();
	if (d.winProj != m_proj) {
	d.winProj = m_proj;
	const int oneRoundedUniformBlockSize = m_r->ubufAligned(68);
	for (int i = 0; i < ATTCOUNT; ++i) {
	QMatrix4x4 mvp = m_proj;
	switch (i) {
	case 0:
	mvp.translate(-2.0f, 0, 0);
	break;
	case 1:
	mvp.translate(-0.8f, 0, 0);
	break;
	case 2:
	mvp.translate(0.4f, 0, 0);
	break;
	case 3:
	mvp.translate(1.6f, 0, 0);
	break;
	default:
	Q_UNREACHABLE();
	break;
	}
	u->updateDynamicBuffer(d.ubuf, i * oneRoundedUniformBlockSize, 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()) });
	vbufBinding.second = 0;
	cb->setVertexInput(0, 1, &vbufBinding, d.ibuf, 0, QRhiCommandBuffer::IndexUInt16);
	for (int i = 0; i < ATTCOUNT; ++i) {
	cb->setShaderResources(d.colData[i].srb);
	cb->drawIndexed(6);
	}
	cb->endPass();
	}