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mesh.go
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mesh.go
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// Copyright (C) 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package resolve
import (
"context"
"github.com/google/gapid/core/log"
"github.com/google/gapid/gapis/api"
"github.com/google/gapid/gapis/messages"
"github.com/google/gapid/gapis/service"
"github.com/google/gapid/gapis/service/path"
)
// Mesh resolves and returns the Mesh from the path p.
func Mesh(ctx context.Context, p *path.Mesh, r *path.ResolveConfig) (*api.Mesh, error) {
obj, err := ResolveInternal(ctx, p.Parent(), r)
if err != nil {
return nil, err
}
if mesh, err := meshFor(ctx, obj, p, r); err != api.ErrMeshNotAvailable {
return mesh, err
}
return nil, &service.ErrDataUnavailable{Reason: messages.ErrMeshNotAvailable()}
}
func meshFor(ctx context.Context, o interface{}, p *path.Mesh, r *path.ResolveConfig) (*api.Mesh, error) {
switch o := o.(type) {
case api.APIObject:
if a := o.API(); a != nil {
if mp, ok := a.(api.MeshProvider); ok {
return mp.Mesh(ctx, o, p, r)
}
}
case *service.CommandTreeNode:
cmds, err := Cmds(ctx, o.Commands.Capture)
if err != nil {
return nil, err
}
representation := o.Representation.Indices
p := o.Commands.Capture.Command(representation[0], representation[1:]...).Mesh(p.Options)
if mesh, err := meshFor(ctx, cmds[representation[0]], p, r); err != api.ErrMeshNotAvailable {
return mesh, err
}
if len(o.Commands.From) != len(o.Commands.To) {
return nil, log.Errf(ctx, nil, "Subcommand indices must be the same length")
}
lastSubcommand := len(o.Commands.From) - 1
for i := 0; i < lastSubcommand; i++ {
if o.Commands.From[i] != o.Commands.To[i] {
return nil, log.Errf(ctx, nil, "Subcommand ranges must be identical everywhere but the last element")
}
}
cmd := append([]uint64{}, o.Commands.From...) // make a copy of o.Commands.From
for i := int64(o.Commands.To[lastSubcommand]); i >= int64(o.Commands.From[lastSubcommand]); i-- {
cmd[lastSubcommand] = uint64(i)
p := o.Commands.Capture.Command(cmd[0], cmd[1:]...).Mesh(p.Options)
if mesh, err := meshFor(ctx, cmds[o.Commands.From[0]], p, r); err != api.ErrMeshNotAvailable {
return mesh, err
}
}
return nil, &service.ErrDataUnavailable{Reason: messages.ErrNotADrawCall()}
}
return nil, nil
}