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Diffstat (limited to 'tests/manual/rhi/triquadcube/texturedcuberenderer.cpp')
| -rw-r--r-- | tests/manual/rhi/triquadcube/texturedcuberenderer.cpp | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/tests/manual/rhi/triquadcube/texturedcuberenderer.cpp b/tests/manual/rhi/triquadcube/texturedcuberenderer.cpp new file mode 100644 index 0000000000..3f15881e2d --- /dev/null +++ b/tests/manual/rhi/triquadcube/texturedcuberenderer.cpp @@ -0,0 +1,222 @@ +/**************************************************************************** +** +** 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 "texturedcuberenderer.h" +#include <QFile> +#include <QtGui/private/qshader_p.h> + +#include "../shared/cube.h" + +const bool MIPMAP = true; +const bool AUTOGENMIPMAP = true; + +static QShader getShader(const QString &name) +{ + QFile f(name); + if (f.open(QIODevice::ReadOnly)) + return QShader::fromSerialized(f.readAll()); + + return QShader(); +} + +void TexturedCubeRenderer::initResources(QRhiRenderPassDescriptor *rp) +{ + m_vbuf = m_r->newBuffer(QRhiBuffer::Immutable, QRhiBuffer::VertexBuffer, sizeof(cube)); + m_vbuf->setName(QByteArrayLiteral("Cube vbuf (textured)")); + m_vbuf->build(); + m_vbufReady = false; + + m_ubuf = m_r->newBuffer(QRhiBuffer::Dynamic, QRhiBuffer::UniformBuffer, 64 + 4); + m_ubuf->setName(QByteArrayLiteral("Cube ubuf (textured)")); + m_ubuf->build(); + + m_image = QImage(QLatin1String(":/qt256.png")).convertToFormat(QImage::Format_RGBA8888); + QRhiTexture::Flags texFlags = 0; + if (MIPMAP) + texFlags |= QRhiTexture::MipMapped; + if (AUTOGENMIPMAP) + texFlags |= QRhiTexture::UsedWithGenerateMips; + m_tex = m_r->newTexture(QRhiTexture::RGBA8, QSize(m_image.width(), m_image.height()), 1, texFlags); + m_tex->setName(QByteArrayLiteral("Qt texture")); + m_tex->build(); + + m_sampler = m_r->newSampler(QRhiSampler::Linear, QRhiSampler::Linear, MIPMAP ? QRhiSampler::Linear : QRhiSampler::None, + QRhiSampler::ClampToEdge, QRhiSampler::ClampToEdge); + m_sampler->build(); + + m_srb = m_r->newShaderResourceBindings(); + m_srb->setBindings({ + QRhiShaderResourceBinding::uniformBuffer(0, QRhiShaderResourceBinding::VertexStage | QRhiShaderResourceBinding::FragmentStage, m_ubuf), + QRhiShaderResourceBinding::sampledTexture(1, QRhiShaderResourceBinding::FragmentStage, m_tex, m_sampler) + }); + m_srb->build(); + + m_ps = m_r->newGraphicsPipeline(); + + // No blending but the texture has alpha which we do not want to write out. + // Be nice. (would not matter for an onscreen window but makes a difference + // when reading back and saving into image files f.ex.) + QRhiGraphicsPipeline::TargetBlend blend; + blend.colorWrite = QRhiGraphicsPipeline::R | QRhiGraphicsPipeline::G | QRhiGraphicsPipeline::B; + m_ps->setTargetBlends({ blend }); + + m_ps->setDepthTest(true); + m_ps->setDepthWrite(true); + m_ps->setDepthOp(QRhiGraphicsPipeline::Less); + + m_ps->setCullMode(QRhiGraphicsPipeline::Back); + m_ps->setFrontFace(QRhiGraphicsPipeline::CCW); + + m_ps->setSampleCount(m_sampleCount); + + QShader vs = getShader(QLatin1String(":/texture.vert.qsb")); + Q_ASSERT(vs.isValid()); + QShader fs = getShader(QLatin1String(":/texture.frag.qsb")); + Q_ASSERT(fs.isValid()); + m_ps->setShaderStages({ + { QRhiShaderStage::Vertex, vs }, + { QRhiShaderStage::Fragment, fs } + }); + + QRhiVertexInputLayout inputLayout; + inputLayout.setBindings({ + { 3 * sizeof(float) }, + { 2 * sizeof(float) } + }); + inputLayout.setAttributes({ + { 0, 0, QRhiVertexInputAttribute::Float3, 0 }, + { 1, 1, QRhiVertexInputAttribute::Float2, 0 } + }); + + m_ps->setVertexInputLayout(inputLayout); + m_ps->setShaderResourceBindings(m_srb); + m_ps->setRenderPassDescriptor(rp); + + m_ps->build(); +} + +void TexturedCubeRenderer::resize(const QSize &pixelSize) +{ + m_proj = m_r->clipSpaceCorrMatrix(); + m_proj.perspective(45.0f, pixelSize.width() / (float) pixelSize.height(), 0.01f, 100.0f); + m_proj.translate(0, 0, -4); +} + +void TexturedCubeRenderer::releaseResources() +{ + delete m_ps; + m_ps = nullptr; + + delete m_srb; + m_srb = nullptr; + + delete m_sampler; + m_sampler = nullptr; + + delete m_tex; + m_tex = nullptr; + + delete m_ubuf; + m_ubuf = nullptr; + + delete m_vbuf; + m_vbuf = nullptr; +} + +void TexturedCubeRenderer::queueResourceUpdates(QRhiResourceUpdateBatch *resourceUpdates) +{ + if (!m_vbufReady) { + m_vbufReady = true; + resourceUpdates->uploadStaticBuffer(m_vbuf, cube); + qint32 flip = 0; + resourceUpdates->updateDynamicBuffer(m_ubuf, 64, 4, &flip); + } + + if (!m_image.isNull()) { + if (MIPMAP) { + QRhiTextureUploadDescription desc; + if (!AUTOGENMIPMAP) { + // the ghetto mipmap generator... + for (int i = 0, ie = m_r->mipLevelsForSize(m_image.size()); i != ie; ++i) { + QImage image = m_image.scaled(m_r->sizeForMipLevel(i, m_image.size())); + desc.append({ 0, i, image }); + } + } else { + desc.append({ 0, 0, m_image }); + } + resourceUpdates->uploadTexture(m_tex, desc); + if (AUTOGENMIPMAP) + resourceUpdates->generateMips(m_tex); + } else { + resourceUpdates->uploadTexture(m_tex, m_image); + } + m_image = QImage(); + } + + m_rotation += 1.0f; + QMatrix4x4 mvp = m_proj; + mvp.translate(m_translation); + mvp.scale(0.5f); + mvp.rotate(m_rotation, 0, 1, 0); + resourceUpdates->updateDynamicBuffer(m_ubuf, 0, 64, mvp.constData()); +} + +void TexturedCubeRenderer::queueDraw(QRhiCommandBuffer *cb, const QSize &outputSizeInPixels) +{ + cb->setGraphicsPipeline(m_ps); + cb->setViewport(QRhiViewport(0, 0, outputSizeInPixels.width(), outputSizeInPixels.height())); + cb->setShaderResources(); + const QRhiCommandBuffer::VertexInput vbufBindings[] = { + { m_vbuf, 0 }, + { m_vbuf, 36 * 3 * sizeof(float) } + }; + cb->setVertexInput(0, 2, vbufBindings); + cb->draw(36); +} |