class PaperShapeCache

Defined at line 40 of file ../../src/ui/lib/escher/paper/paper_shape_cache.h

Generates and caches clipped triangle meshes that match the requested shape

specification.

Public Members

static const size_t kNumFramesBeforeEviction

MeshSpec kStandardMeshSpec ()

The generated/cached meshes don't interleave attributes; they are stored in separate vertex

buffers (or at least in disjoint regions of a vertex buffer).

Defined at line 46 of file ../../src/ui/lib/escher/paper/paper_shape_cache.h

MeshSpec kShadowVolumeMeshSpec ()

Defined at line 47 of file ../../src/ui/lib/escher/paper/paper_shape_cache.h

const PaperShapeCacheEntry & GetRectMesh (float width, float height, const plane3 * clip_planes, size_t num_clip_planes)

Defined at line 71 of file ../../src/ui/lib/escher/paper/paper_shape_cache.h

uint64_t frame_number ()

Defined at line 83 of file ../../src/ui/lib/escher/paper/paper_shape_cache.h

size_t size ()

Defined at line 87 of file ../../src/ui/lib/escher/paper/paper_shape_cache.h

uint64_t cache_hit_count ()

Defined at line 89 of file ../../src/ui/lib/escher/paper/paper_shape_cache.h

uint64_t cache_hit_after_plane_culling_count ()

Defined at line 90 of file ../../src/ui/lib/escher/paper/paper_shape_cache.h

uint64_t cache_miss_count ()

Defined at line 93 of file ../../src/ui/lib/escher/paper/paper_shape_cache.h

void PaperShapeCache (EscherWeakPtr escher, const PaperRendererConfig & config)

TODO(https://fxbug.dev/42121362): use constexpr instead, when vulkan.hpp is new enough.

static constexpr MeshSpec kStandardMeshSpec{{MeshAttribute::kPosition2D, MeshAttribute::kUV}};

static constexpr MeshSpec kShadowVolumeMeshSpec{

{MeshAttribute::kPosition2D, MeshAttribute::kUV, MeshAttribute::kBlendWeight1}};

Defined at line 195 of file ../../src/ui/lib/escher/paper/paper_shape_cache.cc

void ~PaperShapeCache ()

Defined at line 198 of file ../../src/ui/lib/escher/paper/paper_shape_cache.cc

const PaperShapeCacheEntry & GetRoundedRectMesh (const RoundedRectSpec & spec, const plane3 * clip_planes, size_t num_clip_planes)

Return a (possibly cached) mesh that matches the shape parameters. To

look up the mesh, a hash is computed from the shape parameters along with

the list of clip planes. If the mesh is not found, a new mesh is generated

from the shape parameters, clipped by the list of planes, and

post-processed in whatever way is required by the current |PaperRenderer|

configuration (e.g. perhaps adding a vertex attribute to allow

shadow-volume extrusion in the vertex shader).

Defined at line 240 of file ../../src/ui/lib/escher/paper/paper_shape_cache.cc

const PaperShapeCacheEntry & GetCircleMesh (float radius, const plane3 * clip_planes, size_t num_clip_planes)

Defined at line 286 of file ../../src/ui/lib/escher/paper/paper_shape_cache.cc

const PaperShapeCacheEntry & GetRectMesh (vec2 min, vec2 max, const plane3 * clip_planes, size_t num_clip_planes)

Defined at line 319 of file ../../src/ui/lib/escher/paper/paper_shape_cache.cc

const PaperShapeCacheEntry & GetBoxMesh (const plane3 * clip_planes, size_t num_clip_planes)

Used for wireframe debugging.

Defined at line 359 of file ../../src/ui/lib/escher/paper/paper_shape_cache.cc

void BeginFrame (BatchGpuUploader * uploader, uint64_t frame_number)

Defined at line 200 of file ../../src/ui/lib/escher/paper/paper_shape_cache.cc

void EndFrame ()

Defined at line 212 of file ../../src/ui/lib/escher/paper/paper_shape_cache.cc

void SetConfig (const PaperRendererConfig & config)

Defined at line 227 of file ../../src/ui/lib/escher/paper/paper_shape_cache.cc