qt 6.5.1 original

tests/manual/rhi/cubemap_scissor/CMakeLists.txt

@@ -0,0 +1,38 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## cubemap_scissor Binary:
+#####################################################################
+
+qt_internal_add_manual_test(cubemap_scissor
+    GUI
+    SOURCES
+        cubemap_scissor.cpp
+    LIBRARIES
+        Qt::Gui
+        Qt::GuiPrivate
+)
+
+# Resources:
+set_source_files_properties("../cubemap/c.png"
+    PROPERTIES QT_RESOURCE_ALIAS "c.png"
+)
+set_source_files_properties("../cubemap/cubemap.frag.qsb"
+    PROPERTIES QT_RESOURCE_ALIAS "cubemap.frag.qsb"
+)
+set_source_files_properties("../cubemap/cubemap.vert.qsb"
+    PROPERTIES QT_RESOURCE_ALIAS "cubemap.vert.qsb"
+)
+set(cubemap_scissor_resource_files
+    "../cubemap/c.png"
+    "../cubemap/cubemap.frag.qsb"
+    "../cubemap/cubemap.vert.qsb"
+)
+
+qt_internal_add_resource(cubemap_scissor "cubemap_scissor"
+    PREFIX
+        "/"
+    FILES
+        ${cubemap_scissor_resource_files}
+)

tests/manual/rhi/cubemap_scissor/cubemap_scissor.cpp

@@ -0,0 +1,194 @@
+// Copyright (C) 2018 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+// This is a test for scissoring. Based on the cubemap test (because there the
+// rendering covers the entire viewport which is what we need here). The
+// scissor rectangle moves first up, then down, then from the center to the
+// left and then to right. The important part is to ensure that the behavior
+// identical between all backends, especially when the rectangle is partly or
+// fully off window.
+
+#include "../shared/examplefw.h"
+#include "../shared/cube.h"
+
+struct {
+    QList<QRhiResource *> releasePool;
+    QRhiBuffer *vbuf = nullptr;
+    QRhiBuffer *ubuf = nullptr;
+    QRhiTexture *tex = nullptr;
+    QRhiSampler *sampler = nullptr;
+    QRhiShaderResourceBindings *srb = nullptr;
+    QRhiGraphicsPipeline *ps = nullptr;
+    QRhiResourceUpdateBatch *initialUpdates = nullptr;
+
+    QPoint scissorBottomLeft;
+    QSize scissorSize;
+    int scissorAnimState = 0;
+    QSize outputSize;
+} d;
+
+void Window::customInit()
+{
+    d.vbuf = m_r->newBuffer(QRhiBuffer::Immutable, QRhiBuffer::VertexBuffer, sizeof(cube));
+    d.vbuf->create();
+    d.releasePool << d.vbuf;
+
+    d.ubuf = m_r->newBuffer(QRhiBuffer::Dynamic, QRhiBuffer::UniformBuffer, 64);
+    d.ubuf->create();
+    d.releasePool << d.ubuf;
+
+    const QSize cubeMapSize(512, 512);
+    d.tex = m_r->newTexture(QRhiTexture::RGBA8, cubeMapSize, 1, QRhiTexture::CubeMap);
+    d.releasePool << d.tex;
+    d.tex->create();
+
+    d.initialUpdates = m_r->nextResourceUpdateBatch();
+    d.initialUpdates->uploadStaticBuffer(d.vbuf, cube);
+
+    QImage img = QImage(":/c.png").mirrored().convertToFormat(QImage::Format_RGBA8888);
+    // just use the same image for all faces for now
+    QRhiTextureSubresourceUploadDescription subresDesc(img);
+    QRhiTextureUploadDescription desc({
+                                          { 0, 0, subresDesc },  // +X
+                                          { 1, 0, subresDesc },  // -X
+                                          { 2, 0, subresDesc },  // +Y
+                                          { 3, 0, subresDesc },  // -Y
+                                          { 4, 0, subresDesc },  // +Z
+                                          { 5, 0, subresDesc }   // -Z
+                                      });
+    d.initialUpdates->uploadTexture(d.tex, desc);
+
+    d.sampler = m_r->newSampler(QRhiSampler::Linear, QRhiSampler::Linear, QRhiSampler::None,
+                                QRhiSampler::Repeat, QRhiSampler::Repeat);
+    d.releasePool << d.sampler;
+    d.sampler->create();
+
+    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->create();
+
+    d.ps = m_r->newGraphicsPipeline();
+    d.releasePool << d.ps;
+
+    d.ps->setFlags(QRhiGraphicsPipeline::UsesScissor);
+
+    d.ps->setDepthTest(true);
+    d.ps->setDepthWrite(true);
+    d.ps->setDepthOp(QRhiGraphicsPipeline::LessOrEqual);
+
+    d.ps->setCullMode(QRhiGraphicsPipeline::Front); // we are inside the cube so cull front, not back
+    d.ps->setFrontFace(QRhiGraphicsPipeline::CCW); // front is ccw in the cube data
+
+    QShader vs = getShader(QLatin1String(":/cubemap.vert.qsb"));
+    Q_ASSERT(vs.isValid());
+    QShader fs = getShader(QLatin1String(":/cubemap.frag.qsb"));
+    Q_ASSERT(fs.isValid());
+    d.ps->setShaderStages({
+        { QRhiShaderStage::Vertex, vs },
+        { QRhiShaderStage::Fragment, fs }
+    });
+
+    QRhiVertexInputLayout inputLayout;
+    inputLayout.setBindings({
+        { 3 * sizeof(float) }
+    });
+    inputLayout.setAttributes({
+        { 0, 0, QRhiVertexInputAttribute::Float3, 0 }
+    });
+
+    d.ps->setVertexInputLayout(inputLayout);
+    d.ps->setShaderResourceBindings(d.srb);
+    d.ps->setRenderPassDescriptor(m_rp);
+
+    d.ps->create();
+
+    d.scissorAnimState = 0;
+}
+
+void Window::customRelease()
+{
+    qDeleteAll(d.releasePool);
+    d.releasePool.clear();
+}
+
+static void advanceScissor()
+{
+    switch (d.scissorAnimState) {
+    case 1: // up
+        d.scissorBottomLeft.setX(d.outputSize.width() / 4);
+        d.scissorBottomLeft.ry() += 1;
+        if (d.scissorBottomLeft.y() > d.outputSize.height() + 100)
+            d.scissorAnimState = 2;
+        break;
+    case 2: // down
+        d.scissorBottomLeft.ry() -= 1;
+        if (d.scissorBottomLeft.y() < -d.scissorSize.height() - 100)
+            d.scissorAnimState = 3;
+        break;
+    case 3: // left
+        d.scissorBottomLeft.setY(d.outputSize.height() / 4);
+        d.scissorBottomLeft.rx() += 1;
+        if (d.scissorBottomLeft.x() > d.outputSize.width() + 100)
+            d.scissorAnimState = 4;
+        break;
+    case 4: // right
+        d.scissorBottomLeft.rx() -= 1;
+        if (d.scissorBottomLeft.x() < -d.scissorSize.width() - 100)
+            d.scissorAnimState = 1;
+        break;
+    }
+
+    qDebug() << "scissor bottom-left" << d.scissorBottomLeft << "size" << d.scissorSize;
+}
+
+void Window::customRender()
+{
+    const QSize outputSizeInPixels = m_sc->currentPixelSize();
+    QRhiCommandBuffer *cb = m_sc->currentFrameCommandBuffer();
+    QRhiResourceUpdateBatch *u = m_r->nextResourceUpdateBatch();
+
+    if (d.initialUpdates) {
+        u->merge(d.initialUpdates);
+        d.initialUpdates->release();
+        d.initialUpdates = nullptr;
+    }
+
+    d.outputSize = outputSizeInPixels;
+    if (d.scissorAnimState == 0) {
+        d.scissorBottomLeft = QPoint(outputSizeInPixels.width() / 4, 0);
+        d.scissorSize = QSize(outputSizeInPixels.width() / 2, outputSizeInPixels.height() / 2);
+        d.scissorAnimState = 1;
+    }
+
+    QMatrix4x4 mvp = m_r->clipSpaceCorrMatrix();
+    mvp.perspective(90.0f, outputSizeInPixels.width() / (float) outputSizeInPixels.height(), 0.01f, 1000.0f);
+    // cube vertices go from -1..1
+    mvp.scale(10);
+    static float rx = 0;
+    mvp.rotate(rx, 1, 0, 0);
+    rx += 0.5f;
+    // no translation
+    u->updateDynamicBuffer(d.ubuf, 0, 64, mvp.constData());
+
+    cb->beginPass(m_sc->currentFrameRenderTarget(), m_clearColor, { 1.0f, 0 }, u);
+    cb->setGraphicsPipeline(d.ps);
+    cb->setViewport(QRhiViewport(0, 0, outputSizeInPixels.width(), outputSizeInPixels.height()));
+
+    // Apply a scissor rectangle that moves around on the screen, also
+    // exercising the out of screen (negative x or y) case.
+    cb->setScissor(QRhiScissor(d.scissorBottomLeft.x(), d.scissorBottomLeft.y(),
+                               d.scissorSize.width(), d.scissorSize.height()));
+
+    cb->setShaderResources();
+
+    const QRhiCommandBuffer::VertexInput vbufBinding(d.vbuf, 0);
+    cb->setVertexInput(0, 1, &vbufBinding);
+    cb->draw(36);
+    cb->endPass();
+
+    advanceScissor();
+}

tests/manual/rhi/cubemap_scissor/cubemap_scissor.pro

@@ -0,0 +1,8 @@
+TEMPLATE = app
+
+QT += gui-private
+
+SOURCES = \
+    cubemap_scissor.cpp
+
+RESOURCES = cubemap_scissor.qrc

tests/manual/rhi/cubemap_scissor/cubemap_scissor.qrc

@@ -0,0 +1,7 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+  <file alias="cubemap.vert.qsb">../cubemap/cubemap.vert.qsb</file>
+  <file alias="cubemap.frag.qsb">../cubemap/cubemap.frag.qsb</file>
+  <file alias="c.png">../cubemap/c.png</file>
+</qresource>
+</RCC>