GeodeCheckerboardPipeline.h File Reference

Render pipeline and draw pass for the transparency checkerboard (fullscreen triangle). More...

#include <array>
#include <cstdint>
#include <optional>
#include <webgpu/webgpu.hpp>
#include "donner/base/Vector2.h"
#include "donner/gpu/Device.h"

Include dependency graph for GeodeCheckerboardPipeline.h:

Classes
struct	donner::geode::CheckerboardScissorPx
	Device-pixel sub-rectangle of the target a checkerboard pass is confined to. More...
struct	donner::geode::CheckerboardUnderlayParams
	Placement and appearance of a transparency-checkerboard pass over a render target. More...
class	donner::geode::GeodeCheckerboardPipeline
	Caches the compiled render pipeline that draws the transparency checkerboard behind see-through document regions, plus its bind group layout. More...
struct	donner::geode::GeodeCheckerboardPipeline::Uniforms
	Uniform block consumed by the checkerboard shader. More...
class	donner::geode::GeodeCheckerboardPass
	Draws the transparency checkerboard over a Geode-owned render target. More...

Namespaces
namespace	donner
	Top-level Donner namespace, which is split into different sub-namespaces such as donner::svg and donner::css.

Variables
constexpr double	donner::geode::kTransparencyCheckerboardCellLogicalPx = 16.0
	Appearance of the transparency checkerboard drawn behind see-through document pixels.
constexpr std::array< float, 4 >	donner::geode::kTransparencyCheckerboardDarkColor
	RGBA in the 0-1 range for odd cells.
constexpr std::array< float, 4 >	donner::geode::kTransparencyCheckerboardLightColor
	RGBA in the 0-1 range for even cells.

Detailed Description

Render pipeline and draw pass for the transparency checkerboard (fullscreen triangle).

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Class Documentation

donner::geode::GeodeCheckerboardPipeline::Uniforms

struct donner::geode::GeodeCheckerboardPipeline::Uniforms

Uniform block consumed by the checkerboard shader.

Class Members
float	checkerSize	Checker cell size in logical pixels.
float	darkColor[4]	RGBA for odd cells.
float	devicePixelRatio	Device pixels per logical pixel.
float	lightColor[4]	RGBA for even cells.
float	originOffsetPx[2]	Device-pixel offset of the target's top-left from the anchor.
float	padding[2]	WGSL uniform struct tail padding; must be zero.
float	targetSize[2]	Render-target size in device pixels.

Variable Documentation

kTransparencyCheckerboardCellLogicalPx

double donner::geode::kTransparencyCheckerboardCellLogicalPx = 16.0

inlineconstexpr

Appearance of the transparency checkerboard drawn behind see-through document pixels.

Shared by every presentation path so the same document lands on identical cells. The size is in logical pixels, so the pattern is anchored to device pixels and never scales with document zoom.

kTransparencyCheckerboardDarkColor

std::array<float, 4> donner::geode::kTransparencyCheckerboardDarkColor

inlineconstexpr

Initial value:

= {
    40.0f / 255.0f, 40.0f / 255.0f, 40.0f / 255.0f, 1.0f}

RGBA in the 0-1 range for odd cells.

kTransparencyCheckerboardLightColor

std::array<float, 4> donner::geode::kTransparencyCheckerboardLightColor

inlineconstexpr

Initial value:

= {
    60.0f / 255.0f, 60.0f / 255.0f, 60.0f / 255.0f, 1.0f}

RGBA in the 0-1 range for even cells.