Class QAccelPlot::PointMaterial¶

ClassList > QAccelPlot > PointMaterial

QSGMaterial for LineCurve marker rendering.More...

#include <PointMaterial.hpp>

Inherits the following classes: QAccelPlot::DataTextureMaterial

Inheritance diagram¶

flowchart TB
  classQAccelPlot_1_1PointMaterial["QAccelPlot::PointMaterial"]

  classQAccelPlot_1_1DataTextureMaterial["QAccelPlot::DataTextureMaterial"]
  classQAccelPlot_1_1DataTextureMaterial --> classQAccelPlot_1_1PointMaterial
  click classQAccelPlot_1_1DataTextureMaterial "../classQAccelPlot_1_1DataTextureMaterial/" "Open QAccelPlot::DataTextureMaterial"

  external_base_classQAccelPlot_1_1DataTextureMaterial_1["QSGMaterial"]
  external_base_classQAccelPlot_1_1DataTextureMaterial_1 --> classQAccelPlot_1_1DataTextureMaterial

Public Attributes¶

Type	Name
float	antialiasingEnabled = `{1.0f}` 1.0 when GPU anti-aliasing is active.
float	antialiasingFeather = `{1.0f}` Anti-aliasing feather width in pixels.
float	gradientDirection = `{0.0f}` 0.0 for a horizontal gradient, 1.0 for a vertical one.
GradientTexture	gradientTexture Gradient lookup texture sampled at binding 2.
float	gradientValueMax = `{1.0f}` Render-space data value at gradient position 1.
float	gradientValueMin = `{0.0f}` Render-space data value at gradient position 0.
float	markerFilled = `{1.0f}` 1.0 for filled markers, 0.0 for hollow outlines.
float	markerSize = `{4.0f}` Marker radius in pixels.
float	markerStrokeWidth = `{1.0f}` Outline width in pixels for hollow markers.
int	shapeType = `{0}` Marker shape: `MarkerShape` value minus one (0 = Circle).

Public Attributes inherited from QAccelPlot::DataTextureMaterial¶

See QAccelPlot::DataTextureMaterial

Type	Name
QColor	color = `{Qt::blue}` Line/fill color uniform.
std::shared_ptr< DataTexture >	dataTexture Data texture sampled by the shader. Materials drawing the same samples may share one.
QVector2D	domainMax = `{1.0f, 1.0f}` Maximum data-space coordinate.
QVector2D	domainMin = `{0.0f, 0.0f}` Minimum data-space coordinate.
float	logScaleX = `{0.0f}` 1.0 when the X axis uses log scale (float for std140 UBO compatibility).
float	logScaleY = `{0.0f}` 1.0 when the Y axis uses log scale (float for std140 UBO compatibility).
float	useVertexColor = `{0.0f}` 1.0 when per-vertex color overrides `color` (float for std140 UBO compatibility).
QVector2D	viewportSize = `{800.0f, 600.0f}` Viewport size in pixels.

Public Functions¶

Type	Name
	PointMaterial () Constructs a PointMaterial with default uniform values.
QSGMaterialShader *	createShader (QSGRendererInterface::RenderMode) override const Creates and returns the point shader program.
QSGMaterialType *	type () override const Returns the unique material type identifier for this class.

Public Functions inherited from QAccelPlot::DataTextureMaterial¶

See QAccelPlot::DataTextureMaterial

Type	Name
	DataTextureMaterial () Constructs an empty DataTextureMaterial .
int	compare (const QSGMaterial * other) override const Compares shared uniform fields; delegates type-specific fields to `compareExtra()` .
QSGTexture *	sampledTexture () const Returns the texture the shader samples, or `nullptr` before`dataTexture` holds an upload.
void	uploadTexture (QQuickWindow * window, const float * data, int floatCount) Uploads floatCount raw floats from__data into`dataTexture` , creating it when it is`nullptr` .
	~DataTextureMaterial () override

Public Static Functions inherited from QAccelPlot::DataTextureMaterial¶

See QAccelPlot::DataTextureMaterial

Type	Name
const QSGGeometry::AttributeSet &	attributeSet () Returns the shared vertex attribute set: `{float` id, float param, uchar4 color} (12 bytes).
void	commitTexture (QSGMaterialShader::RenderState & state, int binding, QSGTexture texture, const DataTexture** * data) Commits the texture of data to sampler__binding (call from`updateSampledImage` ). Does nothing before an upload.
const QSGGeometry::AttributeSet &	vertexIndexAttributeSet () Returns the attribute set of marker quads: one ignored `uchar4` placeholder (4 bytes).
bool	writeCommonUniforms (char * buf, int bufSize, const QMatrix4x4 & matrix, const DataTextureMaterial * mat) Writes the shared UBO prefix (transform + color + domain + flags) into buf .

Protected Functions¶

Type	Name
virtual int	compareExtra (const QSGMaterial * other) override const Compares marker-specific uniforms and the gradient texture identity.

Protected Functions inherited from QAccelPlot::DataTextureMaterial¶

See QAccelPlot::DataTextureMaterial

Type	Name
virtual int	compareExtra (const QSGMaterial * other) const Subclass hook for `compare()` — called after the shared fields compare equal.

Detailed Description¶

Marker positions are read from the inherited data texture as interleaved XY floats, so the vertex buffer depends only on the point count. With useVertexColor == 1 the markers take their color from gradientTexture at their position along gradientDirection.

Public Attributes Documentation¶

variable antialiasingEnabled¶

1.0 when GPU anti-aliasing is active.

float QAccelPlot::PointMaterial::antialiasingEnabled;

variable antialiasingFeather¶

Anti-aliasing feather width in pixels.

float QAccelPlot::PointMaterial::antialiasingFeather;

variable gradientDirection¶

0.0 for a horizontal gradient, 1.0 for a vertical one.

float QAccelPlot::PointMaterial::gradientDirection;

variable gradientTexture¶

Gradient lookup texture sampled at binding 2.

GradientTexture QAccelPlot::PointMaterial::gradientTexture;

variable gradientValueMax¶

Render-space data value at gradient position 1.

float QAccelPlot::PointMaterial::gradientValueMax;

variable gradientValueMin¶

Render-space data value at gradient position 0.

float QAccelPlot::PointMaterial::gradientValueMin;

variable markerFilled¶

1.0 for filled markers, 0.0 for hollow outlines.

float QAccelPlot::PointMaterial::markerFilled;

variable markerSize¶

Marker radius in pixels.

float QAccelPlot::PointMaterial::markerSize;

variable markerStrokeWidth¶

Outline width in pixels for hollow markers.

float QAccelPlot::PointMaterial::markerStrokeWidth;

variable shapeType¶

Marker shape: MarkerShape value minus one (0 = Circle).

int QAccelPlot::PointMaterial::shapeType;

Public Functions Documentation¶

function PointMaterial¶

Constructs a PointMaterial with default uniform values.

QAccelPlot::PointMaterial::PointMaterial ()

function createShader¶

Creates and returns the point shader program.

QSGMaterialShader * QAccelPlot::PointMaterial::createShader (
    QSGRendererInterface::RenderMode
) override const

function type¶

Returns the unique material type identifier for this class.

QSGMaterialType * QAccelPlot::PointMaterial::type () override const

Protected Functions Documentation¶

function compareExtra¶

Compares marker-specific uniforms and the gradient texture identity.

virtual int QAccelPlot::PointMaterial::compareExtra (
    const QSGMaterial * other
) override const

Implements QAccelPlot::DataTextureMaterial::compareExtra

The documentation for this class was generated from the following file QAccelPlot/src/QAccelPlot/materials/PointMaterial.hpp