Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Peiyong Lin | cbc184f | 2018-08-22 13:24:10 -0700 | [diff] [blame] | 17 | #include <renderengine/Mesh.h> |
Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 18 | |
Dan Stoza | ab79e33 | 2015-04-29 13:30:31 -0700 | [diff] [blame] | 19 | #include <utils/Log.h> |
| 20 | |
Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 21 | namespace android { |
Peiyong Lin | 833074a | 2018-08-28 11:53:54 -0700 | [diff] [blame] | 22 | namespace renderengine { |
Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 23 | |
| 24 | Mesh::Mesh(Primitive primitive, size_t vertexCount, size_t vertexSize, size_t texCoordSize) |
Chia-I Wu | b027f80 | 2017-11-29 14:00:52 -0800 | [diff] [blame] | 25 | : mVertexCount(vertexCount), |
| 26 | mVertexSize(vertexSize), |
| 27 | mTexCoordsSize(texCoordSize), |
| 28 | mPrimitive(primitive) { |
Dan Stoza | ab79e33 | 2015-04-29 13:30:31 -0700 | [diff] [blame] | 29 | if (vertexCount == 0) { |
Chia-I Wu | d3b13cb | 2018-09-13 13:31:26 -0700 | [diff] [blame] | 30 | mVertices.resize(1); |
Dan Stoza | ab79e33 | 2015-04-29 13:30:31 -0700 | [diff] [blame] | 31 | mVertices[0] = 0.0f; |
| 32 | mStride = 0; |
| 33 | return; |
| 34 | } |
| 35 | |
Lucas Dupin | 1b6531c | 2018-07-05 17:18:21 -0700 | [diff] [blame] | 36 | const size_t CROP_COORD_SIZE = 2; |
| 37 | size_t stride = vertexSize + texCoordSize + CROP_COORD_SIZE; |
Dan Stoza | ab79e33 | 2015-04-29 13:30:31 -0700 | [diff] [blame] | 38 | size_t remainder = (stride * vertexCount) / vertexCount; |
| 39 | // Since all of the input parameters are unsigned, if stride is less than |
| 40 | // either vertexSize or texCoordSize, it must have overflowed. remainder |
| 41 | // will be equal to stride as long as stride * vertexCount doesn't overflow. |
| 42 | if ((stride < vertexSize) || (remainder != stride)) { |
Lucas Dupin | 1b6531c | 2018-07-05 17:18:21 -0700 | [diff] [blame] | 43 | ALOGE("Overflow in Mesh(..., %zu, %zu, %zu, %zu)", vertexCount, vertexSize, texCoordSize, |
| 44 | CROP_COORD_SIZE); |
Chia-I Wu | d3b13cb | 2018-09-13 13:31:26 -0700 | [diff] [blame] | 45 | mVertices.resize(1); |
Dan Stoza | ab79e33 | 2015-04-29 13:30:31 -0700 | [diff] [blame] | 46 | mVertices[0] = 0.0f; |
| 47 | mVertexCount = 0; |
| 48 | mVertexSize = 0; |
| 49 | mTexCoordsSize = 0; |
| 50 | mStride = 0; |
| 51 | return; |
| 52 | } |
| 53 | |
Chia-I Wu | d3b13cb | 2018-09-13 13:31:26 -0700 | [diff] [blame] | 54 | mVertices.resize(stride * vertexCount); |
Dan Stoza | ab79e33 | 2015-04-29 13:30:31 -0700 | [diff] [blame] | 55 | mStride = stride; |
Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 56 | } |
| 57 | |
Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 58 | Mesh::Primitive Mesh::getPrimitive() const { |
| 59 | return mPrimitive; |
| 60 | } |
| 61 | |
Mathias Agopian | 5cdc899 | 2013-08-13 20:51:23 -0700 | [diff] [blame] | 62 | float const* Mesh::getPositions() const { |
Chia-I Wu | d3b13cb | 2018-09-13 13:31:26 -0700 | [diff] [blame] | 63 | return mVertices.data(); |
Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 64 | } |
Mathias Agopian | 5cdc899 | 2013-08-13 20:51:23 -0700 | [diff] [blame] | 65 | float* Mesh::getPositions() { |
Chia-I Wu | d3b13cb | 2018-09-13 13:31:26 -0700 | [diff] [blame] | 66 | return mVertices.data(); |
Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | float const* Mesh::getTexCoords() const { |
Chia-I Wu | d3b13cb | 2018-09-13 13:31:26 -0700 | [diff] [blame] | 70 | return mVertices.data() + mVertexSize; |
Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 71 | } |
| 72 | float* Mesh::getTexCoords() { |
Chia-I Wu | d3b13cb | 2018-09-13 13:31:26 -0700 | [diff] [blame] | 73 | return mVertices.data() + mVertexSize; |
Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 74 | } |
| 75 | |
Lucas Dupin | 1b6531c | 2018-07-05 17:18:21 -0700 | [diff] [blame] | 76 | float const* Mesh::getCropCoords() const { |
| 77 | return mVertices.data() + mVertexSize + mTexCoordsSize; |
| 78 | } |
| 79 | float* Mesh::getCropCoords() { |
| 80 | return mVertices.data() + mVertexSize + mTexCoordsSize; |
| 81 | } |
| 82 | |
Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 83 | size_t Mesh::getVertexCount() const { |
| 84 | return mVertexCount; |
| 85 | } |
| 86 | |
| 87 | size_t Mesh::getVertexSize() const { |
| 88 | return mVertexSize; |
| 89 | } |
| 90 | |
| 91 | size_t Mesh::getTexCoordsSize() const { |
| 92 | return mTexCoordsSize; |
| 93 | } |
| 94 | |
| 95 | size_t Mesh::getByteStride() const { |
Chia-I Wu | b027f80 | 2017-11-29 14:00:52 -0800 | [diff] [blame] | 96 | return mStride * sizeof(float); |
Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | size_t Mesh::getStride() const { |
| 100 | return mStride; |
| 101 | } |
| 102 | |
Peiyong Lin | 46080ef | 2018-10-26 18:43:14 -0700 | [diff] [blame] | 103 | } // namespace renderengine |
| 104 | } // namespace android |