DD::Image::Render::Span Class Reference

List of all members.

Public Member Functions
	Span (const Span &s)
Span &	operator= (const Span &s)
void	initialize (Scene *scene, rPrimitive *p, int Y)
const Primitive *	primitive () const
rPrimitive *	rprimitive () const
Public Attributes
VertexContext	vtx
	Argument for Iop::fragment_shader().
VArray	vX
	Value for vtx.vP at x==0.
int	x
int	r
	Range of pixels the primitive intersects.
bool	always_hit
	Used by antialiasing.
bool	never_hit
	Used by antialiasing.

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Detailed Description

A Span represents the intersection of an rPrimitive with a scan line, the Render op uses these in it's implementation. The rPrimitive::intersect_scanline() method fills this in. This is the thread-safe part of the rendering system so one of these spans exist for each thread that's working on a primitive.

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Member Function Documentation

void DD::Image::Render::Span::initialize	(	Scene *	scene,
		rPrimitive *	p,
		int	Y
	)			[inline]

Call the rPrimitive::intersect_scanline and otherwise setup.

References DD::Image::Scene::ambient, DD::Image::rPrimitive::geoinfo(), DD::Image::rPrimitive::intersect_scanline(), DD::Image::GeoInfo::material, DD::Image::Primitive::material(), DD::Image::Scene::object_transforms(), DD::Image::GeoInfo::output_index(), DD::Image::rPrimitive::parent(), DD::Image::GeoInfo::render_mode, and DD::Image::GeoInfo::renderState.

Referenced by DD::Image::Render::draw_primitives().

const Primitive* DD::Image::Render::Span::primitive

(

)

const [inline]

Return the parent primitive stored in the VertexContext.

rPrimitive* DD::Image::Render::Span::rprimitive

(

)

const [inline]

Return the render primitive stored in the VertexContext.

Referenced by DD::Image::Render::draw_primitives().