// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

namespace impeller.fb;

enum Stage:byte {
  kVertex,
  kFragment,
  kCompute,
  kTessellationControl,
  kTessellationEvaluation,
}

enum TargetPlatform:byte {
  kMetal,
  kOpenGLES,
  kSkSL,
}

enum UniformDataType:uint32 {
  kBoolean,
  kSignedByte,
  kUnsignedByte,
  kSignedShort,
  kUnsignedShort,
  kSignedInt,
  kUnsignedInt,
  kSignedInt64,
  kUnsignedInt64,
  kHalfFloat,
  kFloat,
  kDouble,
  kSampledImage,
}

table UniformDescription {
  name: string;
  location: uint64;
  type: UniformDataType;
  bit_width: uint64;
  rows: uint64;
  columns: uint64;
  array_elements: uint64;
}

table RuntimeStage {
  stage: Stage;
  target_platform: TargetPlatform;
  entrypoint: string;
  uniforms: [UniformDescription];
  shader: [ubyte];
  sksl: [ubyte];
}

root_type RuntimeStage;
file_identifier "IPLR";