OffscreenBufferPool.cpp revision 74af6e282f8a8f75928a071e8200039517cf5c12
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#include "OffscreenBufferPool.h" 189fded232a9548a304e0145011df8849fba0dcda7Chris Craik 199fded232a9548a304e0145011df8849fba0dcda7Chris Craik#include "Caches.h" 209fded232a9548a304e0145011df8849fba0dcda7Chris Craik#include "Properties.h" 219fded232a9548a304e0145011df8849fba0dcda7Chris Craik#include "renderstate/RenderState.h" 229fded232a9548a304e0145011df8849fba0dcda7Chris Craik#include "utils/FatVector.h" 239fded232a9548a304e0145011df8849fba0dcda7Chris Craik 249fded232a9548a304e0145011df8849fba0dcda7Chris Craik#include <utils/Log.h> 259fded232a9548a304e0145011df8849fba0dcda7Chris Craik 269fded232a9548a304e0145011df8849fba0dcda7Chris Craik#include <GLES2/gl2.h> 279fded232a9548a304e0145011df8849fba0dcda7Chris Craik 289fded232a9548a304e0145011df8849fba0dcda7Chris Craiknamespace android { 299fded232a9548a304e0145011df8849fba0dcda7Chris Craiknamespace uirenderer { 309fded232a9548a304e0145011df8849fba0dcda7Chris Craik 319fded232a9548a304e0145011df8849fba0dcda7Chris Craik//////////////////////////////////////////////////////////////////////////////// 329fded232a9548a304e0145011df8849fba0dcda7Chris Craik// OffscreenBuffer 339fded232a9548a304e0145011df8849fba0dcda7Chris Craik//////////////////////////////////////////////////////////////////////////////// 349fded232a9548a304e0145011df8849fba0dcda7Chris Craik 359fded232a9548a304e0145011df8849fba0dcda7Chris CraikOffscreenBuffer::OffscreenBuffer(RenderState& renderState, Caches& caches, 369fded232a9548a304e0145011df8849fba0dcda7Chris Craik uint32_t viewportWidth, uint32_t viewportHeight) 3738e0c32852e3b9d8ca4a9d3791577f52536419cbJohn Reck : GpuMemoryTracker(GpuObjectType::OffscreenBuffer) 3838e0c32852e3b9d8ca4a9d3791577f52536419cbJohn Reck , renderState(renderState) 399fded232a9548a304e0145011df8849fba0dcda7Chris Craik , viewportWidth(viewportWidth) 409fded232a9548a304e0145011df8849fba0dcda7Chris Craik , viewportHeight(viewportHeight) 419fded232a9548a304e0145011df8849fba0dcda7Chris Craik , texture(caches) { 4238e0c32852e3b9d8ca4a9d3791577f52536419cbJohn Reck uint32_t width = computeIdealDimension(viewportWidth); 4338e0c32852e3b9d8ca4a9d3791577f52536419cbJohn Reck uint32_t height = computeIdealDimension(viewportHeight); 44bd41ded59090e8cdf598e0c65693f1cf0885bbeaJohn Reck caches.textureState().activateTexture(0); 4538e0c32852e3b9d8ca4a9d3791577f52536419cbJohn Reck texture.resize(width, height, GL_RGBA); 469fded232a9548a304e0145011df8849fba0dcda7Chris Craik texture.blend = true; 4738e0c32852e3b9d8ca4a9d3791577f52536419cbJohn Reck texture.setWrap(GL_CLAMP_TO_EDGE); 489fded232a9548a304e0145011df8849fba0dcda7Chris Craik // not setting filter on texture, since it's set when drawing, based on transform 499fded232a9548a304e0145011df8849fba0dcda7Chris Craik} 509fded232a9548a304e0145011df8849fba0dcda7Chris Craik 517435eb148e72382126e9073183e881357bb38a8bChris CraikRect OffscreenBuffer::getTextureCoordinates() { 5238e0c32852e3b9d8ca4a9d3791577f52536419cbJohn Reck const float texX = 1.0f / static_cast<float>(texture.width()); 5338e0c32852e3b9d8ca4a9d3791577f52536419cbJohn Reck const float texY = 1.0f / static_cast<float>(texture.height()); 547435eb148e72382126e9073183e881357bb38a8bChris Craik return Rect(0, viewportHeight * texY, viewportWidth * texX, 0); 557435eb148e72382126e9073183e881357bb38a8bChris Craik} 567435eb148e72382126e9073183e881357bb38a8bChris Craik 5764db2bf1118db88c937e2b8c61b299bb2a80e3cbChris Craikvoid OffscreenBuffer::dirty(Rect dirtyArea) { 5864db2bf1118db88c937e2b8c61b299bb2a80e3cbChris Craik dirtyArea.doIntersect(0, 0, viewportWidth, viewportHeight); 5964db2bf1118db88c937e2b8c61b299bb2a80e3cbChris Craik if (!dirtyArea.isEmpty()) { 6064db2bf1118db88c937e2b8c61b299bb2a80e3cbChris Craik region.orSelf(android::Rect(dirtyArea.left, dirtyArea.top, 6164db2bf1118db88c937e2b8c61b299bb2a80e3cbChris Craik dirtyArea.right, dirtyArea.bottom)); 6264db2bf1118db88c937e2b8c61b299bb2a80e3cbChris Craik } 6364db2bf1118db88c937e2b8c61b299bb2a80e3cbChris Craik} 6464db2bf1118db88c937e2b8c61b299bb2a80e3cbChris Craik 659fded232a9548a304e0145011df8849fba0dcda7Chris Craikvoid OffscreenBuffer::updateMeshFromRegion() { 669fded232a9548a304e0145011df8849fba0dcda7Chris Craik // avoid T-junctions as they cause artifacts in between the resultant 679fded232a9548a304e0145011df8849fba0dcda7Chris Craik // geometry when complex transforms occur. 689fded232a9548a304e0145011df8849fba0dcda7Chris Craik // TODO: generate the safeRegion only if necessary based on drawing transform 699fded232a9548a304e0145011df8849fba0dcda7Chris Craik Region safeRegion = Region::createTJunctionFreeRegion(region); 709fded232a9548a304e0145011df8849fba0dcda7Chris Craik 719fded232a9548a304e0145011df8849fba0dcda7Chris Craik size_t count; 729fded232a9548a304e0145011df8849fba0dcda7Chris Craik const android::Rect* rects = safeRegion.getArray(&count); 739fded232a9548a304e0145011df8849fba0dcda7Chris Craik 7438e0c32852e3b9d8ca4a9d3791577f52536419cbJohn Reck const float texX = 1.0f / float(texture.width()); 7538e0c32852e3b9d8ca4a9d3791577f52536419cbJohn Reck const float texY = 1.0f / float(texture.height()); 769fded232a9548a304e0145011df8849fba0dcda7Chris Craik 779fded232a9548a304e0145011df8849fba0dcda7Chris Craik FatVector<TextureVertex, 64> meshVector(count * 4); // uses heap if more than 64 vertices needed 789fded232a9548a304e0145011df8849fba0dcda7Chris Craik TextureVertex* mesh = &meshVector[0]; 799fded232a9548a304e0145011df8849fba0dcda7Chris Craik for (size_t i = 0; i < count; i++) { 809fded232a9548a304e0145011df8849fba0dcda7Chris Craik const android::Rect* r = &rects[i]; 819fded232a9548a304e0145011df8849fba0dcda7Chris Craik 829fded232a9548a304e0145011df8849fba0dcda7Chris Craik const float u1 = r->left * texX; 839fded232a9548a304e0145011df8849fba0dcda7Chris Craik const float v1 = (viewportHeight - r->top) * texY; 849fded232a9548a304e0145011df8849fba0dcda7Chris Craik const float u2 = r->right * texX; 859fded232a9548a304e0145011df8849fba0dcda7Chris Craik const float v2 = (viewportHeight - r->bottom) * texY; 869fded232a9548a304e0145011df8849fba0dcda7Chris Craik 879fded232a9548a304e0145011df8849fba0dcda7Chris Craik TextureVertex::set(mesh++, r->left, r->top, u1, v1); 889fded232a9548a304e0145011df8849fba0dcda7Chris Craik TextureVertex::set(mesh++, r->right, r->top, u2, v1); 899fded232a9548a304e0145011df8849fba0dcda7Chris Craik TextureVertex::set(mesh++, r->left, r->bottom, u1, v2); 909fded232a9548a304e0145011df8849fba0dcda7Chris Craik TextureVertex::set(mesh++, r->right, r->bottom, u2, v2); 919fded232a9548a304e0145011df8849fba0dcda7Chris Craik } 929fded232a9548a304e0145011df8849fba0dcda7Chris Craik elementCount = count * 6; 939fded232a9548a304e0145011df8849fba0dcda7Chris Craik renderState.meshState().genOrUpdateMeshBuffer(&vbo, 949fded232a9548a304e0145011df8849fba0dcda7Chris Craik sizeof(TextureVertex) * count * 4, 959fded232a9548a304e0145011df8849fba0dcda7Chris Craik &meshVector[0], 969fded232a9548a304e0145011df8849fba0dcda7Chris Craik GL_DYNAMIC_DRAW); // TODO: GL_STATIC_DRAW if savelayer 979fded232a9548a304e0145011df8849fba0dcda7Chris Craik} 989fded232a9548a304e0145011df8849fba0dcda7Chris Craik 999fded232a9548a304e0145011df8849fba0dcda7Chris Craikuint32_t OffscreenBuffer::computeIdealDimension(uint32_t dimension) { 1009fded232a9548a304e0145011df8849fba0dcda7Chris Craik return uint32_t(ceilf(dimension / float(LAYER_SIZE)) * LAYER_SIZE); 1019fded232a9548a304e0145011df8849fba0dcda7Chris Craik} 1029fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1039fded232a9548a304e0145011df8849fba0dcda7Chris CraikOffscreenBuffer::~OffscreenBuffer() { 1049fded232a9548a304e0145011df8849fba0dcda7Chris Craik texture.deleteTexture(); 1059fded232a9548a304e0145011df8849fba0dcda7Chris Craik renderState.meshState().deleteMeshBuffer(vbo); 1069fded232a9548a304e0145011df8849fba0dcda7Chris Craik elementCount = 0; 1079fded232a9548a304e0145011df8849fba0dcda7Chris Craik vbo = 0; 1089fded232a9548a304e0145011df8849fba0dcda7Chris Craik} 1099fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1109fded232a9548a304e0145011df8849fba0dcda7Chris Craik/////////////////////////////////////////////////////////////////////////////// 1119fded232a9548a304e0145011df8849fba0dcda7Chris Craik// OffscreenBufferPool 1129fded232a9548a304e0145011df8849fba0dcda7Chris Craik/////////////////////////////////////////////////////////////////////////////// 1139fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1149fded232a9548a304e0145011df8849fba0dcda7Chris CraikOffscreenBufferPool::OffscreenBufferPool() 1159fded232a9548a304e0145011df8849fba0dcda7Chris Craik : mMaxSize(Properties::layerPoolSize) { 1169fded232a9548a304e0145011df8849fba0dcda7Chris Craik} 1179fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1189fded232a9548a304e0145011df8849fba0dcda7Chris CraikOffscreenBufferPool::~OffscreenBufferPool() { 1199fded232a9548a304e0145011df8849fba0dcda7Chris Craik clear(); // TODO: unique_ptr? 1209fded232a9548a304e0145011df8849fba0dcda7Chris Craik} 1219fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1229fded232a9548a304e0145011df8849fba0dcda7Chris Craikint OffscreenBufferPool::Entry::compare(const Entry& lhs, const Entry& rhs) { 1239fded232a9548a304e0145011df8849fba0dcda7Chris Craik int deltaInt = int(lhs.width) - int(rhs.width); 1249fded232a9548a304e0145011df8849fba0dcda7Chris Craik if (deltaInt != 0) return deltaInt; 1259fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1269fded232a9548a304e0145011df8849fba0dcda7Chris Craik return int(lhs.height) - int(rhs.height); 1279fded232a9548a304e0145011df8849fba0dcda7Chris Craik} 1289fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1299fded232a9548a304e0145011df8849fba0dcda7Chris Craikvoid OffscreenBufferPool::clear() { 13074af6e282f8a8f75928a071e8200039517cf5c12Chris Craik for (auto& entry : mPool) { 1319fded232a9548a304e0145011df8849fba0dcda7Chris Craik delete entry.layer; 1329fded232a9548a304e0145011df8849fba0dcda7Chris Craik } 1339fded232a9548a304e0145011df8849fba0dcda7Chris Craik mPool.clear(); 1349fded232a9548a304e0145011df8849fba0dcda7Chris Craik mSize = 0; 1359fded232a9548a304e0145011df8849fba0dcda7Chris Craik} 1369fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1379fded232a9548a304e0145011df8849fba0dcda7Chris CraikOffscreenBuffer* OffscreenBufferPool::get(RenderState& renderState, 1389fded232a9548a304e0145011df8849fba0dcda7Chris Craik const uint32_t width, const uint32_t height) { 1399fded232a9548a304e0145011df8849fba0dcda7Chris Craik OffscreenBuffer* layer = nullptr; 1409fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1419fded232a9548a304e0145011df8849fba0dcda7Chris Craik Entry entry(width, height); 1429fded232a9548a304e0145011df8849fba0dcda7Chris Craik auto iter = mPool.find(entry); 1439fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1449fded232a9548a304e0145011df8849fba0dcda7Chris Craik if (iter != mPool.end()) { 1459fded232a9548a304e0145011df8849fba0dcda7Chris Craik entry = *iter; 1469fded232a9548a304e0145011df8849fba0dcda7Chris Craik mPool.erase(iter); 1479fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1489fded232a9548a304e0145011df8849fba0dcda7Chris Craik layer = entry.layer; 1499fded232a9548a304e0145011df8849fba0dcda7Chris Craik layer->viewportWidth = width; 1509fded232a9548a304e0145011df8849fba0dcda7Chris Craik layer->viewportHeight = height; 1519fded232a9548a304e0145011df8849fba0dcda7Chris Craik mSize -= layer->getSizeInBytes(); 1529fded232a9548a304e0145011df8849fba0dcda7Chris Craik } else { 1539fded232a9548a304e0145011df8849fba0dcda7Chris Craik layer = new OffscreenBuffer(renderState, Caches::getInstance(), width, height); 1549fded232a9548a304e0145011df8849fba0dcda7Chris Craik } 1559fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1569fded232a9548a304e0145011df8849fba0dcda7Chris Craik return layer; 1579fded232a9548a304e0145011df8849fba0dcda7Chris Craik} 1589fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1599fded232a9548a304e0145011df8849fba0dcda7Chris CraikOffscreenBuffer* OffscreenBufferPool::resize(OffscreenBuffer* layer, 1609fded232a9548a304e0145011df8849fba0dcda7Chris Craik const uint32_t width, const uint32_t height) { 1619fded232a9548a304e0145011df8849fba0dcda7Chris Craik RenderState& renderState = layer->renderState; 16238e0c32852e3b9d8ca4a9d3791577f52536419cbJohn Reck if (layer->texture.width() == OffscreenBuffer::computeIdealDimension(width) 16338e0c32852e3b9d8ca4a9d3791577f52536419cbJohn Reck && layer->texture.height() == OffscreenBuffer::computeIdealDimension(height)) { 1649fded232a9548a304e0145011df8849fba0dcda7Chris Craik // resize in place 1659fded232a9548a304e0145011df8849fba0dcda7Chris Craik layer->viewportWidth = width; 1669fded232a9548a304e0145011df8849fba0dcda7Chris Craik layer->viewportHeight = height; 16702806288d1c56475413888a934c796e6e4eb11c5Chris Craik 16802806288d1c56475413888a934c796e6e4eb11c5Chris Craik // entire area will be repainted (and may be smaller) so clear usage region 16902806288d1c56475413888a934c796e6e4eb11c5Chris Craik layer->region.clear(); 1709fded232a9548a304e0145011df8849fba0dcda7Chris Craik return layer; 1719fded232a9548a304e0145011df8849fba0dcda7Chris Craik } 1729fded232a9548a304e0145011df8849fba0dcda7Chris Craik putOrDelete(layer); 1739fded232a9548a304e0145011df8849fba0dcda7Chris Craik return get(renderState, width, height); 1749fded232a9548a304e0145011df8849fba0dcda7Chris Craik} 1759fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1769fded232a9548a304e0145011df8849fba0dcda7Chris Craikvoid OffscreenBufferPool::dump() { 1779fded232a9548a304e0145011df8849fba0dcda7Chris Craik for (auto entry : mPool) { 1789fded232a9548a304e0145011df8849fba0dcda7Chris Craik ALOGD(" Layer size %dx%d", entry.width, entry.height); 1799fded232a9548a304e0145011df8849fba0dcda7Chris Craik } 1809fded232a9548a304e0145011df8849fba0dcda7Chris Craik} 1819fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1829fded232a9548a304e0145011df8849fba0dcda7Chris Craikvoid OffscreenBufferPool::putOrDelete(OffscreenBuffer* layer) { 1839fded232a9548a304e0145011df8849fba0dcda7Chris Craik const uint32_t size = layer->getSizeInBytes(); 1849fded232a9548a304e0145011df8849fba0dcda7Chris Craik // Don't even try to cache a layer that's bigger than the cache 1859fded232a9548a304e0145011df8849fba0dcda7Chris Craik if (size < mMaxSize) { 1869fded232a9548a304e0145011df8849fba0dcda7Chris Craik // TODO: Use an LRU 1879fded232a9548a304e0145011df8849fba0dcda7Chris Craik while (mSize + size > mMaxSize) { 1889fded232a9548a304e0145011df8849fba0dcda7Chris Craik OffscreenBuffer* victim = mPool.begin()->layer; 1899fded232a9548a304e0145011df8849fba0dcda7Chris Craik mSize -= victim->getSizeInBytes(); 1909fded232a9548a304e0145011df8849fba0dcda7Chris Craik delete victim; 1919fded232a9548a304e0145011df8849fba0dcda7Chris Craik mPool.erase(mPool.begin()); 1929fded232a9548a304e0145011df8849fba0dcda7Chris Craik } 1939fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1949fded232a9548a304e0145011df8849fba0dcda7Chris Craik // clear region, since it's no longer valid 1959fded232a9548a304e0145011df8849fba0dcda7Chris Craik layer->region.clear(); 1969fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1979fded232a9548a304e0145011df8849fba0dcda7Chris Craik Entry entry(layer); 1989fded232a9548a304e0145011df8849fba0dcda7Chris Craik 1999fded232a9548a304e0145011df8849fba0dcda7Chris Craik mPool.insert(entry); 2009fded232a9548a304e0145011df8849fba0dcda7Chris Craik mSize += size; 2019fded232a9548a304e0145011df8849fba0dcda7Chris Craik } else { 2029fded232a9548a304e0145011df8849fba0dcda7Chris Craik delete layer; 2039fded232a9548a304e0145011df8849fba0dcda7Chris Craik } 2049fded232a9548a304e0145011df8849fba0dcda7Chris Craik} 2059fded232a9548a304e0145011df8849fba0dcda7Chris Craik 2069fded232a9548a304e0145011df8849fba0dcda7Chris Craik}; // namespace uirenderer 2079fded232a9548a304e0145011df8849fba0dcda7Chris Craik}; // namespace android 208