OffscreenBufferPool.h revision 98787e6c9b2c10b1ab7820bdac168686025b924a
19fded232a9548a304e0145011df8849fba0dcda7Chris Craik/* 29fded232a9548a304e0145011df8849fba0dcda7Chris Craik * Copyright (C) 2015 The Android Open Source Project 39fded232a9548a304e0145011df8849fba0dcda7Chris Craik * 49fded232a9548a304e0145011df8849fba0dcda7Chris Craik * Licensed under the Apache License, Version 2.0 (the "License"); 59fded232a9548a304e0145011df8849fba0dcda7Chris Craik * you may not use this file except in compliance with the License. 69fded232a9548a304e0145011df8849fba0dcda7Chris Craik * You may obtain a copy of the License at 79fded232a9548a304e0145011df8849fba0dcda7Chris Craik * 89fded232a9548a304e0145011df8849fba0dcda7Chris Craik * http://www.apache.org/licenses/LICENSE-2.0 99fded232a9548a304e0145011df8849fba0dcda7Chris Craik * 109fded232a9548a304e0145011df8849fba0dcda7Chris Craik * Unless required by applicable law or agreed to in writing, software 119fded232a9548a304e0145011df8849fba0dcda7Chris Craik * distributed under the License is distributed on an "AS IS" BASIS, 129fded232a9548a304e0145011df8849fba0dcda7Chris Craik * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139fded232a9548a304e0145011df8849fba0dcda7Chris Craik * See the License for the specific language governing permissions and 149fded232a9548a304e0145011df8849fba0dcda7Chris Craik * limitations under the License. 159fded232a9548a304e0145011df8849fba0dcda7Chris Craik */ 169fded232a9548a304e0145011df8849fba0dcda7Chris Craik 179fded232a9548a304e0145011df8849fba0dcda7Chris Craik#ifndef ANDROID_HWUI_OFFSCREEN_BUFFER_POOL_H 189fded232a9548a304e0145011df8849fba0dcda7Chris Craik#define ANDROID_HWUI_OFFSCREEN_BUFFER_POOL_H 199fded232a9548a304e0145011df8849fba0dcda7Chris Craik 209fded232a9548a304e0145011df8849fba0dcda7Chris Craik#include "Caches.h" 219fded232a9548a304e0145011df8849fba0dcda7Chris Craik#include "Texture.h" 229fded232a9548a304e0145011df8849fba0dcda7Chris Craik#include "utils/Macros.h" 239fded232a9548a304e0145011df8849fba0dcda7Chris Craik 249fded232a9548a304e0145011df8849fba0dcda7Chris Craik#include <ui/Region.h> 259fded232a9548a304e0145011df8849fba0dcda7Chris Craik 269fded232a9548a304e0145011df8849fba0dcda7Chris Craik#include <set> 279fded232a9548a304e0145011df8849fba0dcda7Chris Craik 289fded232a9548a304e0145011df8849fba0dcda7Chris Craiknamespace android { 299fded232a9548a304e0145011df8849fba0dcda7Chris Craiknamespace uirenderer { 309fded232a9548a304e0145011df8849fba0dcda7Chris Craik 319fded232a9548a304e0145011df8849fba0dcda7Chris Craikclass RenderState; 329fded232a9548a304e0145011df8849fba0dcda7Chris Craik 339fded232a9548a304e0145011df8849fba0dcda7Chris Craik/** 349fded232a9548a304e0145011df8849fba0dcda7Chris Craik * Lightweight alternative to Layer. Owns the persistent state of an offscreen render target, and 359fded232a9548a304e0145011df8849fba0dcda7Chris Craik * encompasses enough information to draw it back on screen (minus paint properties, which are held 369fded232a9548a304e0145011df8849fba0dcda7Chris Craik * by LayerOp). 3798787e6c9b2c10b1ab7820bdac168686025b924aChris Craik * 3898787e6c9b2c10b1ab7820bdac168686025b924aChris Craik * Has two distinct sizes - viewportWidth/viewportHeight describe content area, 3998787e6c9b2c10b1ab7820bdac168686025b924aChris Craik * texture.width/.height are actual allocated texture size. Texture will tend to be larger than the 4098787e6c9b2c10b1ab7820bdac168686025b924aChris Craik * viewport bounds, since textures are always allocated with width / height as a multiple of 64, for 4198787e6c9b2c10b1ab7820bdac168686025b924aChris Craik * the purpose of improving reuse. 429fded232a9548a304e0145011df8849fba0dcda7Chris Craik */ 439fded232a9548a304e0145011df8849fba0dcda7Chris Craikclass OffscreenBuffer { 449fded232a9548a304e0145011df8849fba0dcda7Chris Craikpublic: 459fded232a9548a304e0145011df8849fba0dcda7Chris Craik OffscreenBuffer(RenderState& renderState, Caches& caches, 469fded232a9548a304e0145011df8849fba0dcda7Chris Craik uint32_t viewportWidth, uint32_t viewportHeight); 479fded232a9548a304e0145011df8849fba0dcda7Chris Craik ~OffscreenBuffer(); 489fded232a9548a304e0145011df8849fba0dcda7Chris Craik 499fded232a9548a304e0145011df8849fba0dcda7Chris Craik // must be called prior to rendering, to construct/update vertex buffer 509fded232a9548a304e0145011df8849fba0dcda7Chris Craik void updateMeshFromRegion(); 519fded232a9548a304e0145011df8849fba0dcda7Chris Craik 5298787e6c9b2c10b1ab7820bdac168686025b924aChris Craik // Set by RenderNode for HW layers, TODO for clipped saveLayers 5398787e6c9b2c10b1ab7820bdac168686025b924aChris Craik void setWindowTransform(const Matrix4& transform) { 5498787e6c9b2c10b1ab7820bdac168686025b924aChris Craik inverseTransformInWindow.loadInverse(transform); 5598787e6c9b2c10b1ab7820bdac168686025b924aChris Craik } 5698787e6c9b2c10b1ab7820bdac168686025b924aChris Craik 579fded232a9548a304e0145011df8849fba0dcda7Chris Craik static uint32_t computeIdealDimension(uint32_t dimension); 589fded232a9548a304e0145011df8849fba0dcda7Chris Craik 599fded232a9548a304e0145011df8849fba0dcda7Chris Craik uint32_t getSizeInBytes() { return texture.width * texture.height * 4; } 609fded232a9548a304e0145011df8849fba0dcda7Chris Craik 619fded232a9548a304e0145011df8849fba0dcda7Chris Craik RenderState& renderState; 6298787e6c9b2c10b1ab7820bdac168686025b924aChris Craik 639fded232a9548a304e0145011df8849fba0dcda7Chris Craik uint32_t viewportWidth; 649fded232a9548a304e0145011df8849fba0dcda7Chris Craik uint32_t viewportHeight; 659fded232a9548a304e0145011df8849fba0dcda7Chris Craik Texture texture; 669fded232a9548a304e0145011df8849fba0dcda7Chris Craik 679fded232a9548a304e0145011df8849fba0dcda7Chris Craik // Portion of layer that has been drawn to. Used to minimize drawing area when 689fded232a9548a304e0145011df8849fba0dcda7Chris Craik // drawing back to screen / parent FBO. 699fded232a9548a304e0145011df8849fba0dcda7Chris Craik Region region; 7098787e6c9b2c10b1ab7820bdac168686025b924aChris Craik 7198787e6c9b2c10b1ab7820bdac168686025b924aChris Craik Matrix4 inverseTransformInWindow; 7298787e6c9b2c10b1ab7820bdac168686025b924aChris Craik 7398787e6c9b2c10b1ab7820bdac168686025b924aChris Craik // vbo / size of mesh 749fded232a9548a304e0145011df8849fba0dcda7Chris Craik GLsizei elementCount = 0; 759fded232a9548a304e0145011df8849fba0dcda7Chris Craik GLuint vbo = 0; 769fded232a9548a304e0145011df8849fba0dcda7Chris Craik}; 779fded232a9548a304e0145011df8849fba0dcda7Chris Craik 789fded232a9548a304e0145011df8849fba0dcda7Chris Craik/** 799fded232a9548a304e0145011df8849fba0dcda7Chris Craik * Pool of OffscreenBuffers allocated, but not currently in use. 809fded232a9548a304e0145011df8849fba0dcda7Chris Craik */ 819fded232a9548a304e0145011df8849fba0dcda7Chris Craikclass OffscreenBufferPool { 829fded232a9548a304e0145011df8849fba0dcda7Chris Craikpublic: 839fded232a9548a304e0145011df8849fba0dcda7Chris Craik OffscreenBufferPool(); 849fded232a9548a304e0145011df8849fba0dcda7Chris Craik ~OffscreenBufferPool(); 859fded232a9548a304e0145011df8849fba0dcda7Chris Craik 869fded232a9548a304e0145011df8849fba0dcda7Chris Craik WARN_UNUSED_RESULT OffscreenBuffer* get(RenderState& renderState, 879fded232a9548a304e0145011df8849fba0dcda7Chris Craik const uint32_t width, const uint32_t height); 889fded232a9548a304e0145011df8849fba0dcda7Chris Craik 899fded232a9548a304e0145011df8849fba0dcda7Chris Craik WARN_UNUSED_RESULT OffscreenBuffer* resize(OffscreenBuffer* layer, 909fded232a9548a304e0145011df8849fba0dcda7Chris Craik const uint32_t width, const uint32_t height); 919fded232a9548a304e0145011df8849fba0dcda7Chris Craik 929fded232a9548a304e0145011df8849fba0dcda7Chris Craik void putOrDelete(OffscreenBuffer* layer); 939fded232a9548a304e0145011df8849fba0dcda7Chris Craik 949fded232a9548a304e0145011df8849fba0dcda7Chris Craik /** 959fded232a9548a304e0145011df8849fba0dcda7Chris Craik * Clears the pool. This causes all layers to be deleted. 969fded232a9548a304e0145011df8849fba0dcda7Chris Craik */ 979fded232a9548a304e0145011df8849fba0dcda7Chris Craik void clear(); 989fded232a9548a304e0145011df8849fba0dcda7Chris Craik 999fded232a9548a304e0145011df8849fba0dcda7Chris Craik /** 1009fded232a9548a304e0145011df8849fba0dcda7Chris Craik * Returns the maximum size of the pool in bytes. 1019fded232a9548a304e0145011df8849fba0dcda7Chris Craik */ 1029fded232a9548a304e0145011df8849fba0dcda7Chris Craik uint32_t getMaxSize() { return mMaxSize; } 1039fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1049fded232a9548a304e0145011df8849fba0dcda7Chris Craik /** 1059fded232a9548a304e0145011df8849fba0dcda7Chris Craik * Returns the current size of the pool in bytes. 1069fded232a9548a304e0145011df8849fba0dcda7Chris Craik */ 1079fded232a9548a304e0145011df8849fba0dcda7Chris Craik uint32_t getSize() { return mSize; } 1089fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1099fded232a9548a304e0145011df8849fba0dcda7Chris Craik size_t getCount() { return mPool.size(); } 1109fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1119fded232a9548a304e0145011df8849fba0dcda7Chris Craik /** 1129fded232a9548a304e0145011df8849fba0dcda7Chris Craik * Prints out the content of the pool. 1139fded232a9548a304e0145011df8849fba0dcda7Chris Craik */ 1149fded232a9548a304e0145011df8849fba0dcda7Chris Craik void dump(); 1159fded232a9548a304e0145011df8849fba0dcda7Chris Craikprivate: 1169fded232a9548a304e0145011df8849fba0dcda7Chris Craik struct Entry { 1179fded232a9548a304e0145011df8849fba0dcda7Chris Craik Entry() {} 1189fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1199fded232a9548a304e0145011df8849fba0dcda7Chris Craik Entry(const uint32_t layerWidth, const uint32_t layerHeight) 1209fded232a9548a304e0145011df8849fba0dcda7Chris Craik : width(OffscreenBuffer::computeIdealDimension(layerWidth)) 1219fded232a9548a304e0145011df8849fba0dcda7Chris Craik , height(OffscreenBuffer::computeIdealDimension(layerHeight)) {} 1229fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1239fded232a9548a304e0145011df8849fba0dcda7Chris Craik Entry(OffscreenBuffer* layer) 1249fded232a9548a304e0145011df8849fba0dcda7Chris Craik : layer(layer) 1259fded232a9548a304e0145011df8849fba0dcda7Chris Craik , width(layer->texture.width) 1269fded232a9548a304e0145011df8849fba0dcda7Chris Craik , height(layer->texture.height) { 1279fded232a9548a304e0145011df8849fba0dcda7Chris Craik } 1289fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1299fded232a9548a304e0145011df8849fba0dcda7Chris Craik static int compare(const Entry& lhs, const Entry& rhs); 1309fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1319fded232a9548a304e0145011df8849fba0dcda7Chris Craik bool operator==(const Entry& other) const { 1329fded232a9548a304e0145011df8849fba0dcda7Chris Craik return compare(*this, other) == 0; 1339fded232a9548a304e0145011df8849fba0dcda7Chris Craik } 1349fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1359fded232a9548a304e0145011df8849fba0dcda7Chris Craik bool operator!=(const Entry& other) const { 1369fded232a9548a304e0145011df8849fba0dcda7Chris Craik return compare(*this, other) != 0; 1379fded232a9548a304e0145011df8849fba0dcda7Chris Craik } 1389fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1399fded232a9548a304e0145011df8849fba0dcda7Chris Craik bool operator<(const Entry& other) const { 1409fded232a9548a304e0145011df8849fba0dcda7Chris Craik return Entry::compare(*this, other) < 0; 1419fded232a9548a304e0145011df8849fba0dcda7Chris Craik } 1429fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1439fded232a9548a304e0145011df8849fba0dcda7Chris Craik OffscreenBuffer* layer = nullptr; 1449fded232a9548a304e0145011df8849fba0dcda7Chris Craik uint32_t width = 0; 1459fded232a9548a304e0145011df8849fba0dcda7Chris Craik uint32_t height = 0; 1469fded232a9548a304e0145011df8849fba0dcda7Chris Craik }; // struct Entry 1479fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1489fded232a9548a304e0145011df8849fba0dcda7Chris Craik std::multiset<Entry> mPool; 1499fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1509fded232a9548a304e0145011df8849fba0dcda7Chris Craik uint32_t mSize = 0; 1519fded232a9548a304e0145011df8849fba0dcda7Chris Craik uint32_t mMaxSize; 1529fded232a9548a304e0145011df8849fba0dcda7Chris Craik}; // class OffscreenBufferCache 1539fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1549fded232a9548a304e0145011df8849fba0dcda7Chris Craik}; // namespace uirenderer 1559fded232a9548a304e0145011df8849fba0dcda7Chris Craik}; // namespace android 1569fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1579fded232a9548a304e0145011df8849fba0dcda7Chris Craik#endif // ANDROID_HWUI_OFFSCREEN_BUFFER_POOL_H 158