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// Copyright (C) 2008-2012 NVIDIA Corporation.
// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
// Qt-Security score:significant reason:default
#include <QtQuick3DRuntimeRender/private/qssgrhiquadrenderer_p.h>
#include <QtQuick3DUtils/private/qquick3dprofiler_p.h>
QT_BEGIN_NAMESPACE
static const QVector3D g_fullScreenRectFaces[] = {
QVector3D(-1, -1, 0),
QVector3D(-1, 1, 0),
QVector3D(1, 1, 0),
QVector3D(1, -1, 0),
QVector3D(-1, -1, 1),
QVector3D(-1, 1, 1),
QVector3D(1, 1, 1),
QVector3D(1, -1, 1),
QVector3D(-1, -1, -1),
QVector3D(-1, 1, -1),
QVector3D(1, 1, -1),
QVector3D(1, -1, -1),
};
static const QVector2D g_fullScreenRectUVs[] = {
QVector2D(0, 0),
QVector2D(0, 1),
QVector2D(1, 1),
QVector2D(1, 0)
};
static const quint16 g_rectIndex[] = {
0, 1, 2, 0, 2, 3, // front face - 0, 1, 2, 3
0, 4, 5, 0, 5, 1, // left face - 0, 4, 5, 1
1, 5, 6, 1, 6, 2, // top face - 1, 5, 6, 2
3, 2, 6, 3, 6, 7, // right face - 3, 2, 6, 7
0, 3, 7, 0, 7, 4, // bottom face - 0, 3, 7, 4
7, 6, 5, 7, 5, 4 // back face - 7, 6, 5, 4
};
void QSSGRhiQuadRenderer::ensureBuffers(QSSGRhiContext *rhiCtx, QRhiResourceUpdateBatch *rub)
{
if (!m_vbuf) {
constexpr int vertexCount = 8;
m_vbuf = std::make_shared<QSSGRhiBuffer>(*rhiCtx,
QRhiBuffer::Immutable,
QRhiBuffer::VertexBuffer,
quint32(5 * sizeof(float)),
5 * vertexCount * sizeof(float));
m_vbuf->buffer()->setName(QByteArrayLiteral("quad vertex buffer"));
float buf[5 * vertexCount];
float *p = buf;
for (int i = 0; i < vertexCount; ++i) {
*p++ = g_fullScreenRectFaces[i].x();
*p++ = g_fullScreenRectFaces[i].y();
*p++ = g_fullScreenRectFaces[i].z();
*p++ = g_fullScreenRectUVs[i % 4].x();
*p++ = g_fullScreenRectUVs[i % 4].y();
}
rub->uploadStaticBuffer(m_vbuf->buffer(), buf);
}
if (!m_ibuf) {
m_ibuf = std::make_shared<QSSGRhiBuffer>(*rhiCtx,
QRhiBuffer::Immutable,
QRhiBuffer::IndexBuffer,
0,
6 * sizeof(quint16),
QRhiCommandBuffer::IndexUInt16);
m_ibuf->buffer()->setName(QByteArrayLiteral("quad index buffer"));
const quint16 buf[] = { 0, 1, 2, 0, 2, 3 };
rub->uploadStaticBuffer(m_ibuf->buffer(), buf);
}
}
void QSSGRhiQuadRenderer::prepareQuad(QSSGRhiContext *rhiCtx, QRhiResourceUpdateBatch *maybeRub)
{
QRhiResourceUpdateBatch *rub = maybeRub ? maybeRub : rhiCtx->rhi()->nextResourceUpdateBatch();
ensureBuffers(rhiCtx, rub);
rhiCtx->commandBuffer()->resourceUpdate(rub);
}
void QSSGRhiQuadRenderer::recordRenderQuad(QSSGRhiContext *rhiCtx,
QSSGRhiGraphicsPipelineState *ps, QRhiShaderResourceBindings *srb,
QRhiRenderPassDescriptor *rpDesc, Flags flags)
{
// ps must have viewport and shaderPipeline set already
auto &ia = QSSGRhiInputAssemblerStatePrivate::get(*ps);
if (flags.testFlag(UvCoords)) {
ia.inputLayout.setAttributes({
{ 0, 0, QRhiVertexInputAttribute::Float3, 0 },
{ 0, 1, QRhiVertexInputAttribute::Float2, 3 * sizeof(float) }
});
ia.inputs << QSSGRhiInputAssemblerState::PositionSemantic << QSSGRhiInputAssemblerState::TexCoord0Semantic;
} else {
ia.inputLayout.setAttributes({ { 0, 0, QRhiVertexInputAttribute::Float3, 0 } });
ia.inputs << QSSGRhiInputAssemblerState::PositionSemantic;
}
ia.inputLayout.setBindings({ 5 * sizeof(float) });
ia.topology = QRhiGraphicsPipeline::Triangles;
ps->flags.setFlag(QSSGRhiGraphicsPipelineState::Flag::DepthTestEnabled, flags.testFlag(DepthTest));
ps->flags.setFlag(QSSGRhiGraphicsPipelineState::Flag::DepthWriteEnabled, flags.testFlag(DepthWrite));
ps->cullMode = QRhiGraphicsPipeline::None;
if (flags.testFlag(PremulBlend)) {
ps->flags |= QSSGRhiGraphicsPipelineState::Flag::BlendEnabled;
ps->targetBlend[0].srcColor = QRhiGraphicsPipeline::One;
ps->targetBlend[0].dstColor = QRhiGraphicsPipeline::OneMinusSrcAlpha;
ps->targetBlend[0].srcAlpha = QRhiGraphicsPipeline::One;
ps->targetBlend[0].dstAlpha = QRhiGraphicsPipeline::OneMinusSrcAlpha;
} else { // set to default, since we may not have had a renderable previously
ps->targetBlend[0].srcColor = QRhiGraphicsPipeline::SrcAlpha;
ps->targetBlend[0].dstColor = QRhiGraphicsPipeline::OneMinusSrcAlpha;
ps->targetBlend[0].srcAlpha = QRhiGraphicsPipeline::One;
ps->targetBlend[0].dstAlpha = QRhiGraphicsPipeline::OneMinusSrcAlpha;
}
QSSGRhiContextPrivate *rhiCtxD = QSSGRhiContextPrivate::get(rhiCtx);
QRhiGraphicsPipeline *pipeline = rhiCtxD->pipeline(*ps, rpDesc, srb);
// Make sure that we were able to create the pipeline before trying to use it
// When GraphicsPipeline creation fails it should return nullptr and print a warning
if (!pipeline)
return;
QRhiCommandBuffer *cb = rhiCtx->commandBuffer();
cb->setGraphicsPipeline(pipeline);
cb->setShaderResources(srb);
cb->setViewport(ps->viewport);
quint32 vertexOffset = flags.testAnyFlags(RenderBehind) ? 5 * 4 * sizeof(float) : 0;
QRhiCommandBuffer::VertexInput vb(m_vbuf->buffer(), vertexOffset);
Q_QUICK3D_PROFILE_START(QQuick3DProfiler::Quick3DRenderCall);
cb->setVertexInput(0, 1, &vb, m_ibuf->buffer(), m_ibuf->indexFormat());
cb->drawIndexed(6);
QSSGRHICTX_STAT(rhiCtx, drawIndexed(6, 1));
Q_QUICK3D_PROFILE_END_WITH_STRING(QQuick3DProfiler::Quick3DRenderCall, 36llu | (1llu << 32), QByteArrayLiteral("render_quad"));
}
void QSSGRhiQuadRenderer::recordRenderQuadPass(QSSGRhiContext *rhiCtx,
QSSGRhiGraphicsPipelineState *ps, QRhiShaderResourceBindings *srb,
QRhiTextureRenderTarget *rt, Flags flags)
{
QRhiCommandBuffer *cb = rhiCtx->commandBuffer();
cb->beginPass(rt, Qt::black, { 1.0f, 0 }, nullptr, rhiCtx->commonPassFlags());
QSSGRHICTX_STAT(rhiCtx, beginRenderPass(rt));
recordRenderQuad(rhiCtx, ps, srb, rt->renderPassDescriptor(), flags);
cb->endPass();
QSSGRHICTX_STAT(rhiCtx, endRenderPass());
}
void QSSGRhiCubeRenderer::prepareCube(QSSGRhiContext *rhiCtx, QRhiResourceUpdateBatch *maybeRub)
{
QRhiResourceUpdateBatch *rub = maybeRub ? maybeRub : rhiCtx->rhi()->nextResourceUpdateBatch();
ensureBuffers(rhiCtx, rub);
rhiCtx->commandBuffer()->resourceUpdate(rub);
}
//### The flags UvCoords and RenderBehind are ignored
void QSSGRhiCubeRenderer::recordRenderCube(QSSGRhiContext *rhiCtx, QSSGRhiGraphicsPipelineState *ps, QRhiShaderResourceBindings *srb, QRhiRenderPassDescriptor *rpDesc, QSSGRhiQuadRenderer::Flags flags)
{
auto &ia = QSSGRhiInputAssemblerStatePrivate::get(*ps);
// ps must have viewport and shaderPipeline set already
ia.inputLayout.setAttributes({ { 0, 0, QRhiVertexInputAttribute::Float3, 0 } });
ia.inputs << QSSGRhiInputAssemblerState::PositionSemantic;
ia.inputLayout.setBindings({ 3 * sizeof(float) });
ia.topology = QRhiGraphicsPipeline::Triangles;
ps->flags.setFlag(QSSGRhiGraphicsPipelineState::Flag::DepthTestEnabled, flags.testFlag(QSSGRhiQuadRenderer::DepthTest));
ps->flags.setFlag(QSSGRhiGraphicsPipelineState::Flag::DepthWriteEnabled, flags.testFlag(QSSGRhiQuadRenderer::DepthWrite));
ps->cullMode = QRhiGraphicsPipeline::None;
if (flags.testFlag(QSSGRhiQuadRenderer::PremulBlend)) {
ps->flags |= QSSGRhiGraphicsPipelineState::Flag::BlendEnabled;
ps->targetBlend[0].srcColor = QRhiGraphicsPipeline::One;
ps->targetBlend[0].dstColor = QRhiGraphicsPipeline::OneMinusSrcAlpha;
ps->targetBlend[0].srcAlpha = QRhiGraphicsPipeline::One;
ps->targetBlend[0].dstAlpha = QRhiGraphicsPipeline::OneMinusSrcAlpha;
} else { // set to default, since we may not have had a renderable previously
ps->targetBlend[0].srcColor = QRhiGraphicsPipeline::SrcAlpha;
ps->targetBlend[0].dstColor = QRhiGraphicsPipeline::OneMinusSrcAlpha;
ps->targetBlend[0].srcAlpha = QRhiGraphicsPipeline::One;
ps->targetBlend[0].dstAlpha = QRhiGraphicsPipeline::OneMinusSrcAlpha;
}
QSSGRhiContextPrivate *rhiCtxD = QSSGRhiContextPrivate::get(rhiCtx);
QRhiGraphicsPipeline *pipeline = rhiCtxD->pipeline(*ps, rpDesc, srb);
// Make sure that we were able to create the pipeline before trying to use it
// When GraphicsPipeline creation fails it should return nullptr and print a warning
if (!pipeline)
return;
QRhiCommandBuffer *cb = rhiCtx->commandBuffer();
cb->setGraphicsPipeline(pipeline);
cb->setShaderResources(srb);
cb->setViewport(ps->viewport);
QRhiCommandBuffer::VertexInput vb(m_vbuf->buffer(), 0);
Q_QUICK3D_PROFILE_START(QQuick3DProfiler::Quick3DRenderCall);
cb->setVertexInput(0, 1, &vb, m_ibuf->buffer(), m_ibuf->indexFormat());
cb->drawIndexed(36);
QSSGRHICTX_STAT(rhiCtx, drawIndexed(36, 1));
Q_QUICK3D_PROFILE_END_WITH_STRING(QQuick3DProfiler::Quick3DRenderCall, 36, QByteArrayLiteral("render_cube"));
}
void QSSGRhiCubeRenderer::ensureBuffers(QSSGRhiContext *rhiCtx, QRhiResourceUpdateBatch *rub)
{
if (!m_vbuf) {
constexpr int vertexCount = 8;
m_vbuf = std::make_shared<QSSGRhiBuffer>(*rhiCtx,
QRhiBuffer::Immutable,
QRhiBuffer::VertexBuffer,
quint32(3 * sizeof(float)),
3 * vertexCount * sizeof(float));
m_vbuf->buffer()->setName(QByteArrayLiteral("cube vertex buffer"));
float buf[3 * vertexCount];
float *p = buf;
for (int i = 0; i < vertexCount; ++i) {
*p++ = g_fullScreenRectFaces[4 + i].x();
*p++ = g_fullScreenRectFaces[4 + i].y();
*p++ = g_fullScreenRectFaces[4 + i].z();
}
rub->uploadStaticBuffer(m_vbuf->buffer(), buf);
}
if (!m_ibuf) {
m_ibuf = std::make_shared<QSSGRhiBuffer>(*rhiCtx,
QRhiBuffer::Immutable,
QRhiBuffer::IndexBuffer,
0,
sizeof(g_rectIndex),
QRhiCommandBuffer::IndexUInt16);
m_ibuf->buffer()->setName(QByteArrayLiteral("cube index buffer"));
rub->uploadStaticBuffer(m_ibuf->buffer(), g_rectIndex);
}
}
QT_END_NAMESPACE