raisin::WeightedOitSystem

class · #include <rayrai/WeightedOitSystem.hpp>

Owns the GL resources for weighted-blended order-independent transparency (Meshkin / McGuire-Bavoil): an RGBA16F accumulation target, an R16F reveal target, an RGBA8 opaque-color target, and a shared FBO. Re-allocated automatically when the requested size changes.

Extracted from RayraiWindow as part of the 1.1 decomposition. Caller is responsible for using the texture handles in the actual render-pass compositing — this class only manages the resources.

Constructors & destructor

WeightedOitSystem

WeightedOitSystem() = default

WeightedOitSystem(const WeightedOitSystem &) = delete

WeightedOitSystem(WeightedOitSystem &&) = delete

~WeightedOitSystem

~WeightedOitSystem()

Public member functions

operator=

WeightedOitSystem &operator=(const WeightedOitSystem &) = delete

WeightedOitSystem &operator=(WeightedOitSystem &&) = delete

ensureResources

bool ensureResources(int width, int height)

Lazily (re-)allocate the FBO + 3 textures sized to (width, height).

Parameters

Parameter	Description
width	Target width in pixels.
height	Target height in pixels.

Returns true on success; false for a non-positive size.

release

void release()

Release all owned GL handles. Safe to call multiple times.

fbo

unsigned int fbo() const

Returns Shared framebuffer, or 0.

accumTex

unsigned int accumTex() const

Returns RGBA16F accumulation texture, or 0.

revealTex

unsigned int revealTex() const

Returns R16F reveal (transmittance) texture, or 0.

opaqueTex

unsigned int opaqueTex() const

Returns RGBA8 opaque-color texture, or 0.

width

int width() const

Returns Allocated width.

height

int height() const

Returns Allocated height.