Flood.h File Reference

The flood compute program, expressed in the donner::gpu::shader IR. More...

#include "donner/gpu/shader/IrModule.h"

Include dependency graph for Flood.h:

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

Enumerations
enum class	donner::gpu::shader::programs::FloodBinding : uint32_t {   OutputTexture = 0 ,   Params = 1 }
	Bind group indices of the flood compute program, shared by the IR builder and every host that creates its bind group layout. More...

Functions
ShaderResult< IrModule >	donner::gpu::shader::programs::BuildFloodModule ()
	Builds the flood compute program: one @compute @workgroup_size(8, 8, 1) entry point named cs_main that writes one uniform color to every texel of a write-only storage texture.

Variables
constexpr uint32_t	donner::gpu::shader::programs::kFloodWorkgroupSize = 8
	Workgroup size the flood entry point declares. Hosts divide the destination extent by this to compute dispatch counts.

Detailed Description

The flood compute program, expressed in the donner::gpu::shader IR.

Enumeration Type Documentation

FloodBinding

enum class donner::gpu::shader::programs::FloodBinding : uint32_t

strong

Bind group indices of the flood compute program, shared by the IR builder and every host that creates its bind group layout.

Enumerator
OutputTexture	texture_storage_2d<rgba8unorm, write> destination.
Params	Uniform buffer holding the single color the destination is filled with.

Function Documentation

BuildFloodModule()

ShaderResult< IrModule > donner::gpu::shader::programs::BuildFloodModule

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Builds the flood compute program: one @compute @workgroup_size(8, 8, 1) entry point named cs_main that writes one uniform color to every texel of a write-only storage texture.

The program reads no texture, so the destination extent is the only thing that bounds it. The color is written exactly as the uniform carries it: whether it is premultiplied is the caller's decision, and nothing here re-associates it with the alpha channel.

Invocations outside the destination extent return without writing, so a dispatch rounded up to whole workgroups is safe.