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author | Alexandru Croitor <alexandru.croitor@qt.io> | 2019-07-11 17:17:13 +0200 |
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committer | Alexandru Croitor <alexandru.croitor@qt.io> | 2019-07-11 17:17:51 +0200 |
commit | 4dac45c9ee59ff6586d90d423654da91523ab679 (patch) | |
tree | cd4a4adf2cbc9e77bf86d2d11e71ec66afdf3be4 /tests/manual/rhi/floattexture/floattexture.cpp | |
parent | 078cd61751aeaa310d35a3d596a21a36004a1a0f (diff) | |
parent | f44850b5c3464cdda0ee9b1ee858d95f3ffaa3e2 (diff) |
Merge remote-tracking branch 'origin/wip/qt6' into wip/cmake
Change-Id: I715b1d743d5f11560e7b3fbeb8fd64a5e5ddb277
Diffstat (limited to 'tests/manual/rhi/floattexture/floattexture.cpp')
-rw-r--r-- | tests/manual/rhi/floattexture/floattexture.cpp | 328 |
1 files changed, 328 insertions, 0 deletions
diff --git a/tests/manual/rhi/floattexture/floattexture.cpp b/tests/manual/rhi/floattexture/floattexture.cpp new file mode 100644 index 0000000000..16e58ff00f --- /dev/null +++ b/tests/manual/rhi/floattexture/floattexture.cpp @@ -0,0 +1,328 @@ +/**************************************************************************** +** +** 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(), QColor::fromRgbF(0.4f, 0.7f, 0.0f, 1.0f), { 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(); +} |