LayerRenderer.cpp revision 57066eb64c9a190d1afc87bb060bbb2d31e5b86c
16c319ca1275c8db892c39b48fc54864c949f9171Romain Guy/* 26c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * Copyright (C) 2011 The Android Open Source Project 36c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * 46c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * Licensed under the Apache License, Version 2.0 (the "License"); 56c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * you may not use this file except in compliance with the License. 66c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * You may obtain a copy of the License at 76c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * 86c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * http://www.apache.org/licenses/LICENSE-2.0 96c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * 106c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * Unless required by applicable law or agreed to in writing, software 116c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * distributed under the License is distributed on an "AS IS" BASIS, 126c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 136c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * See the License for the specific language governing permissions and 146c319ca1275c8db892c39b48fc54864c949f9171Romain Guy * limitations under the License. 156c319ca1275c8db892c39b48fc54864c949f9171Romain Guy */ 166c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 176c319ca1275c8db892c39b48fc54864c949f9171Romain Guy#define LOG_TAG "OpenGLRenderer" 186c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 196c319ca1275c8db892c39b48fc54864c949f9171Romain Guy#include "LayerRenderer.h" 206c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 216c319ca1275c8db892c39b48fc54864c949f9171Romain Guynamespace android { 226c319ca1275c8db892c39b48fc54864c949f9171Romain Guynamespace uirenderer { 236c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 246c319ca1275c8db892c39b48fc54864c949f9171Romain Guy/////////////////////////////////////////////////////////////////////////////// 256c319ca1275c8db892c39b48fc54864c949f9171Romain Guy// Rendering 266c319ca1275c8db892c39b48fc54864c949f9171Romain Guy/////////////////////////////////////////////////////////////////////////////// 276c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 286c319ca1275c8db892c39b48fc54864c949f9171Romain Guyvoid LayerRenderer::prepare(bool opaque) { 296c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glGetIntegerv(GL_FRAMEBUFFER_BINDING, (GLint*) &mPreviousFbo); 306c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, mFbo); 316c319ca1275c8db892c39b48fc54864c949f9171Romain Guy OpenGLRenderer::prepare(opaque); 326c319ca1275c8db892c39b48fc54864c949f9171Romain Guy} 336c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 346c319ca1275c8db892c39b48fc54864c949f9171Romain Guyvoid LayerRenderer::finish() { 356c319ca1275c8db892c39b48fc54864c949f9171Romain Guy OpenGLRenderer::finish(); 366c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, mPreviousFbo); 376c319ca1275c8db892c39b48fc54864c949f9171Romain Guy} 386c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 396c319ca1275c8db892c39b48fc54864c949f9171Romain Guy/////////////////////////////////////////////////////////////////////////////// 406c319ca1275c8db892c39b48fc54864c949f9171Romain Guy// Static functions 416c319ca1275c8db892c39b48fc54864c949f9171Romain Guy/////////////////////////////////////////////////////////////////////////////// 426c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 436c319ca1275c8db892c39b48fc54864c949f9171Romain GuyGLuint LayerRenderer::createLayer(uint32_t width, uint32_t height, 446c319ca1275c8db892c39b48fc54864c949f9171Romain Guy uint32_t* layerWidth, uint32_t* layerHeight, GLuint* texture) { 456c319ca1275c8db892c39b48fc54864c949f9171Romain Guy GLuint previousFbo; 466c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glGetIntegerv(GL_FRAMEBUFFER_BINDING, (GLint*) &previousFbo); 476c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 486c319ca1275c8db892c39b48fc54864c949f9171Romain Guy GLuint fbo = 0; 496c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glGenFramebuffers(1, &fbo); 506c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, fbo); 516c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 526c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glActiveTexture(GL_TEXTURE0); 536c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glGenTextures(1, texture); 546c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glBindTexture(GL_TEXTURE_2D, *texture); 556c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 566c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 576c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 586c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 596c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 606c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 616c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 626c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 636c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 646c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, 656c319ca1275c8db892c39b48fc54864c949f9171Romain Guy GL_RGBA, GL_UNSIGNED_BYTE, NULL); 666c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 676c319ca1275c8db892c39b48fc54864c949f9171Romain Guy if (glGetError() != GL_NO_ERROR) { 686c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glDeleteBuffers(1, &fbo); 696c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glDeleteTextures(1, texture); 706c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previousFbo); 716c319ca1275c8db892c39b48fc54864c949f9171Romain Guy return 0; 726c319ca1275c8db892c39b48fc54864c949f9171Romain Guy } 736c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 746c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 756c319ca1275c8db892c39b48fc54864c949f9171Romain Guy *texture, 0); 766c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 776c319ca1275c8db892c39b48fc54864c949f9171Romain Guy if (glGetError() != GL_NO_ERROR) { 786c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glDeleteBuffers(1, &fbo); 796c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glDeleteTextures(1, texture); 806c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previousFbo); 816c319ca1275c8db892c39b48fc54864c949f9171Romain Guy return 0; 826c319ca1275c8db892c39b48fc54864c949f9171Romain Guy } 836c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 846c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previousFbo); 856c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 866c319ca1275c8db892c39b48fc54864c949f9171Romain Guy *layerWidth = width; 876c319ca1275c8db892c39b48fc54864c949f9171Romain Guy *layerHeight = height; 886c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 896c319ca1275c8db892c39b48fc54864c949f9171Romain Guy return fbo; 906c319ca1275c8db892c39b48fc54864c949f9171Romain Guy} 916c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 926c319ca1275c8db892c39b48fc54864c949f9171Romain Guyvoid LayerRenderer::resizeLayer(GLuint fbo, GLuint texture, uint32_t width, uint32_t height, 936c319ca1275c8db892c39b48fc54864c949f9171Romain Guy uint32_t* layerWidth, uint32_t* layerHeight) { 946c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glActiveTexture(GL_TEXTURE0); 956c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 966c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 976c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, 986c319ca1275c8db892c39b48fc54864c949f9171Romain Guy GL_RGBA, GL_UNSIGNED_BYTE, NULL); 996c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 1006c319ca1275c8db892c39b48fc54864c949f9171Romain Guy if (glGetError() != GL_NO_ERROR) { 1016c319ca1275c8db892c39b48fc54864c949f9171Romain Guy glDeleteBuffers(1, &fbo); 102a9d0711392689a94b9f76eb0c16d0718c005603eRomain Guy glDeleteTextures(1, &texture); 1036c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 1046c319ca1275c8db892c39b48fc54864c949f9171Romain Guy *layerWidth = 0; 1056c319ca1275c8db892c39b48fc54864c949f9171Romain Guy *layerHeight = 0; 1066c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 1076c319ca1275c8db892c39b48fc54864c949f9171Romain Guy return; 1086c319ca1275c8db892c39b48fc54864c949f9171Romain Guy } 1096c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 1106c319ca1275c8db892c39b48fc54864c949f9171Romain Guy *layerWidth = width; 1116c319ca1275c8db892c39b48fc54864c949f9171Romain Guy *layerHeight = height; 1126c319ca1275c8db892c39b48fc54864c949f9171Romain Guy} 1136c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 1146c319ca1275c8db892c39b48fc54864c949f9171Romain Guyvoid LayerRenderer::destroyLayer(GLuint fbo, GLuint texture) { 1156c319ca1275c8db892c39b48fc54864c949f9171Romain Guy if (fbo) glDeleteFramebuffers(1, &fbo); 1166c319ca1275c8db892c39b48fc54864c949f9171Romain Guy if (texture) glDeleteTextures(1, &texture); 1176c319ca1275c8db892c39b48fc54864c949f9171Romain Guy} 1186c319ca1275c8db892c39b48fc54864c949f9171Romain Guy 11957066eb64c9a190d1afc87bb060bbb2d31e5b86cRomain Guyvoid LayerRenderer::destroyLayerDeferred(GLuint fbo, GLuint texture) { 12057066eb64c9a190d1afc87bb060bbb2d31e5b86cRomain Guy Caches& caches = Caches::getInstance(); 12157066eb64c9a190d1afc87bb060bbb2d31e5b86cRomain Guy if (fbo) caches.deleteFboDeferred(fbo); 12257066eb64c9a190d1afc87bb060bbb2d31e5b86cRomain Guy if (texture) caches.deleteTextureDeferred(texture); 12357066eb64c9a190d1afc87bb060bbb2d31e5b86cRomain Guy} 12457066eb64c9a190d1afc87bb060bbb2d31e5b86cRomain Guy 1256c319ca1275c8db892c39b48fc54864c949f9171Romain Guy}; // namespace uirenderer 1266c319ca1275c8db892c39b48fc54864c949f9171Romain Guy}; // namespace android 127