| Flutter Impeller |

vertex_buffer.h
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef FLUTTER_IMPELLER_CORE_VERTEX_BUFFER_H_
6 #define FLUTTER_IMPELLER_CORE_VERTEX_BUFFER_H_
7
8 #include "impeller/core/buffer_view.h"
9 #include "impeller/core/formats.h"
10
11 namespace impeller {
12
13 struct VertexBuffer {
14 BufferView vertex_buffer;
15
16 //----------------------------------------------------------------------------
17 /// The index buffer binding used by the vertex shader stage.
18 BufferView index_buffer;
19
20 //----------------------------------------------------------------------------
21 /// The total count of vertices, either in the vertex_buffer if the
22 /// index_type is IndexType::kNone or in the index_buffer otherwise.
23 size_t vertex_count = 0u;
24
25 //----------------------------------------------------------------------------
26 /// The type of indices in the index buffer. The indices must be tightly
27 /// packed in the index buffer.
28 ///
29 IndexType index_type = IndexType::kUnknown;
30
31 constexpr explicit operator bool() const {
32 return static_cast<bool>(vertex_buffer) &&
33 (index_type == IndexType::kNone || static_cast<bool>(index_buffer));
34 }
35 };
36
37 } // namespace impeller
38
39 #endif // FLUTTER_IMPELLER_CORE_VERTEX_BUFFER_H_
impeller::VertexBuffer::index_type
IndexType index_type
Definition: vertex_buffer.h:29
impeller::VertexBuffer
Definition: vertex_buffer.h:13
formats.h
impeller::VertexBuffer::vertex_buffer
BufferView vertex_buffer
Definition: vertex_buffer.h:14
impeller::VertexBuffer::vertex_count
size_t vertex_count
Definition: vertex_buffer.h:23
impeller::IndexType
IndexType
Definition: formats.h:343
impeller::IndexType::kNone
@ kNone
Does not use the index buffer.
impeller::VertexBuffer::index_buffer
BufferView index_buffer
The index buffer binding used by the vertex shader stage.
Definition: vertex_buffer.h:18
impeller::BufferView
Definition: buffer_view.h:15
buffer_view.h
impeller
Definition: allocation.cc:12
impeller::IndexType::kUnknown
@ kUnknown