qbackingstoredefaultcompositor.cpp File Reference

#include "qbackingstoredefaultcompositor_p.h"
#include <QtGui/private/qwindow_p.h>
#include <qpa/qplatformgraphicsbuffer.h>
#include <QtCore/qfile.h>

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Enumerations
enum class	SourceTransformOrigin { BottomLeft , TopLeft }
enum class	PipelineBlend { None , Alpha , PremulAlpha }

Functions
static QRect	scaledRect (const QRect &rect, qreal factor)
static QPoint	scaledOffset (const QPoint &pt, qreal factor)
static QRegion	scaledRegion (const QRegion &region, qreal factor, const QPoint &offset)
static QMatrix4x4	targetTransform (const QRectF &target, const QRect &viewport, bool invertY)
static QMatrix3x3	sourceTransform (const QRectF &subTexture, const QSize &textureSize, SourceTransformOrigin origin)
static QRect	toBottomLeftRect (const QRect &topLeftRect, int windowHeight)
static bool	prepareDrawForRenderToTextureWidget (const QPlatformTextureList *textures, int idx, QWindow *window, const QRect &deviceWindowRect, const QPoint &offset, bool invertTargetY, bool invertSource, QMatrix4x4 *target, QMatrix3x3 *source)
static QShader	getShader (const QString &name)
static void	updateMatrix3x3 (QRhiResourceUpdateBatch *resourceUpdates, QRhiBuffer *ubuf, const QMatrix3x3 &m)
static QRhiGraphicsPipeline *	createGraphicsPipeline (QRhi *rhi, QRhiShaderResourceBindings *srb, QRhiSwapChain *swapchain, PipelineBlend blend)

Variables
static const int	UBUF_SIZE = 120

Enumeration Type Documentation

PipelineBlend

enum class PipelineBlend

strong

Enumerator
None
Alpha
PremulAlpha

Definition at line 275 of file qbackingstoredefaultcompositor.cpp.

SourceTransformOrigin

enum class SourceTransformOrigin

strong

Enumerator
BottomLeft
TopLeft

Definition at line 179 of file qbackingstoredefaultcompositor.cpp.

Function Documentation

createGraphicsPipeline()

static QRhiGraphicsPipeline * createGraphicsPipeline ( QRhi *  rhi, QRhiShaderResourceBindings *  srb, QRhiSwapChain *  swapchain, PipelineBlend  blend  )

static

Definition at line 281 of file qbackingstoredefaultcompositor.cpp.

References Alpha, QRhiGraphicsPipeline::create(), QRhiGraphicsPipeline::TargetBlend::dstAlpha, QRhiGraphicsPipeline::TargetBlend::dstColor, QRhiGraphicsPipeline::TargetBlend::enable, QRhiVertexInputAttribute::Float2, QRhiVertexInputAttribute::Float3, QRhiShaderStage::Fragment, getShader(), QRhi::newGraphicsPipeline(), QRhiGraphicsPipeline::One, QRhiGraphicsPipeline::OneMinusSrcAlpha, PremulAlpha, qWarning, QRhiSwapChain::renderPassDescriptor(), QRhiVertexInputLayout::setAttributes(), QRhiVertexInputLayout::setBindings(), QRhiGraphicsPipeline::setRenderPassDescriptor(), QRhiGraphicsPipeline::setShaderResourceBindings(), QRhiGraphicsPipeline::setShaderStages(), QRhiGraphicsPipeline::setTargetBlends(), QRhiGraphicsPipeline::setVertexInputLayout(), QRhiGraphicsPipeline::SrcAlpha, QRhiGraphicsPipeline::TargetBlend::srcAlpha, QRhiGraphicsPipeline::TargetBlend::srcColor, and QRhiShaderStage::Vertex.

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getShader()

static QShader getShader ( const QString &  name )

static

Definition at line 248 of file qbackingstoredefaultcompositor.cpp.

References QShader::fromSerialized(), qPrintable, qWarning, and QIODeviceBase::ReadOnly.

Referenced by createGraphicsPipeline(), and main().

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prepareDrawForRenderToTextureWidget()

static bool prepareDrawForRenderToTextureWidget ( const QPlatformTextureList *  textures, int  idx, QWindow *  window, const QRect &  deviceWindowRect, const QPoint &  offset, bool  invertTargetY, bool  invertSource, QMatrix4x4 *  target, QMatrix3x3 *  source  )

static

Definition at line 216 of file qbackingstoredefaultcompositor.cpp.

References BottomLeft, QRect::height(), QRect::isEmpty(), scaledRect(), QRect::size(), sourceTransform(), targetTransform(), toBottomLeftRect(), QRect::topLeft(), TopLeft, QRect::translate(), QRect::translated(), and window().

Referenced by QBackingStoreDefaultCompositor::flush().

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scaledOffset()

static QPoint scaledOffset ( const QPoint &  pt, qreal  factor  )

inlinestatic

Definition at line 136 of file qbackingstoredefaultcompositor.cpp.

Referenced by QBackingStoreDefaultCompositor::flush().

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scaledRect()

static QRect scaledRect ( const QRect &  rect, qreal  factor  )

inlinestatic

Definition at line 131 of file qbackingstoredefaultcompositor.cpp.

References rect.

Referenced by QBackingStoreDefaultCompositor::flush(), prepareDrawForRenderToTextureWidget(), and scaledRegion().

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scaledRegion()

static QRegion scaledRegion ( const QRegion &  region, qreal  factor, const QPoint &  offset  )

static

Definition at line 141 of file qbackingstoredefaultcompositor.cpp.

References QVarLengthArray< T, Prealloc >::append(), QVarLengthArray< T, Prealloc >::constData(), rect, QRegion::rectCount(), QVarLengthArray< T, Prealloc >::reserve(), scaledRect(), QRegion::setRects(), and QVLABaseBase::size().

Referenced by QBackingStoreDefaultCompositor::flush().

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sourceTransform()

static QMatrix3x3 sourceTransform ( const QRectF &  subTexture, const QSize &  textureSize, SourceTransformOrigin  origin  )

static

Definition at line 184 of file qbackingstoredefaultcompositor.cpp.

References QRectF::height(), QSize::height(), QRectF::topLeft(), TopLeft, QRectF::width(), QSize::width(), QPointF::x(), and QPointF::y().

Referenced by QOpenGLTextureBlitterPrivate::blit(), QOpenGLTextureBlitterPrivate::blit(), QBackingStoreDefaultCompositor::flush(), prepareDrawForRenderToTextureWidget(), and QOpenGLTextureBlitterPrivate::toTextureCoordinates().

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targetTransform()

static QMatrix4x4 targetTransform ( const QRectF &  target, const QRect &  viewport, bool  invertY  )

static

Definition at line 156 of file qbackingstoredefaultcompositor.cpp.

References viewport(), QPointF::x(), and QPointF::y().

Referenced by QOpenGLTextureBlitterPrivate::blit(), QOpenGLTextureBlitterPrivate::blit(), and prepareDrawForRenderToTextureWidget().

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toBottomLeftRect()

static QRect toBottomLeftRect ( const QRect &  topLeftRect, int  windowHeight  )

inlinestatic

Definition at line 210 of file qbackingstoredefaultcompositor.cpp.

References QRect::bottomRight(), QRect::height(), QRect::width(), QRect::x(), and QPoint::y().

Referenced by QBackingStoreDefaultCompositor::flush(), and prepareDrawForRenderToTextureWidget().

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updateMatrix3x3()

static void updateMatrix3x3 ( QRhiResourceUpdateBatch *  resourceUpdates, QRhiBuffer *  ubuf, const QMatrix3x3 &  m  )

static

Definition at line 260 of file qbackingstoredefaultcompositor.cpp.

References QRhiResourceUpdateBatch::updateDynamicBuffer().

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Variable Documentation

UBUF_SIZE

const int UBUF_SIZE = 120

static

Definition at line 337 of file qbackingstoredefaultcompositor.cpp.

Referenced by RenderHelpers::rhiRenderAoTexture().