OpenGLRenderer.cpp revision 50c0f093d942a59d4e01b2c76d26c0e9d6ed796c
1e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy/* 2e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * Copyright (C) 2010 The Android Open Source Project 3e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * 4e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * Licensed under the Apache License, Version 2.0 (the "License"); 5e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * you may not use this file except in compliance with the License. 6e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * You may obtain a copy of the License at 7e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * 8e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * http://www.apache.org/licenses/LICENSE-2.0 9e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * 10e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * Unless required by applicable law or agreed to in writing, software 11e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * distributed under the License is distributed on an "AS IS" BASIS, 12e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * See the License for the specific language governing permissions and 14e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * limitations under the License. 15e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy */ 16e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 1785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy#define LOG_TAG "OpenGLRenderer" 18e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 19e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy#include <stdlib.h> 20e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy#include <stdint.h> 21e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy#include <sys/types.h> 22e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 23bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#include <SkCanvas.h> 24694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy#include <SkTypeface.h> 255cbbce535744b89df5ecea95de21ee3733298260Romain Guy 265cbbce535744b89df5ecea95de21ee3733298260Romain Guy#include <utils/Log.h> 27e2d345ea67e2960b37bfdc0fc8626d1bfa747404Romain Guy#include <utils/StopWatch.h> 2885bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 2985bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy#include "OpenGLRenderer.h" 30e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 31e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guynamespace android { 329d5316e3f56d138504565ff311145ac01621dff4Romain Guynamespace uirenderer { 339d5316e3f56d138504565ff311145ac01621dff4Romain Guy 349d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 359d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Defines 369d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 379d5316e3f56d138504565ff311145ac01621dff4Romain Guy 38759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy#define RAD_TO_DEG (180.0f / 3.14159265f) 39759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy#define MIN_ANGLE 0.001f 40759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 41dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy// TODO: This should be set in properties 42dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy#define ALPHA_THRESHOLD (0x7f / PANEL_BIT_DEPTH) 43dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 449d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 459d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Globals 469d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 479d5316e3f56d138504565ff311145ac01621dff4Romain Guy 48889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy/** 49889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy * Structure mapping Skia xfermodes to OpenGL blending factors. 50889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy */ 51889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystruct Blender { 52889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy SkXfermode::Mode mode; 53889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum src; 54889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum dst; 55889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy}; // struct Blender 56889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 57026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// In this array, the index of each Blender equals the value of the first 58026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// entry. For instance, gBlends[1] == gBlends[SkXfermode::kSrc_Mode] 59026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const Blender gBlends[] = { 60026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 61026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrc_Mode, GL_ONE, GL_ZERO }, 62026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDst_Mode, GL_ZERO, GL_ONE }, 63026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 64026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 65026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcIn_Mode, GL_DST_ALPHA, GL_ZERO }, 66026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 67026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 68026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 69026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 70026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 71026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 72026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy}; 73e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 7487a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// This array contains the swapped version of each SkXfermode. For instance 7587a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// this array's SrcOver blending mode is actually DstOver. You can refer to 7687a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// createLayer() for more information on the purpose of this array. 77f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guystatic const Blender gBlendsSwap[] = { 78f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 79f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrc_Mode, GL_ZERO, GL_ONE }, 80f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDst_Mode, GL_ONE, GL_ZERO }, 81f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 82f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 83f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 84f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstIn_Mode, GL_DST_ALPHA, GL_ZERO }, 85f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 86f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 87f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 88f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 89f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 90f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy}; 91f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 92889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystatic const GLenum gTextureUnits[] = { 9306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE0, 9406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE1, 9506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE2 96d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy}; 97d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 98f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 99f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Constructors/destructor 100f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 101f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 102fb8b763f762ae21923c58d64caa729b012f40e05Romain GuyOpenGLRenderer::OpenGLRenderer(): mCaches(Caches::getInstance()) { 10306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 104db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 1051e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 106026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 107ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy memcpy(mMeshVertices, gMeshVertices, sizeof(gMeshVertices)); 108ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy 109ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy mFirstSnapshot = new Snapshot; 110ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy 111b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 112e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 113e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 11485bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain GuyOpenGLRenderer::~OpenGLRenderer() { 11529d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy // The context has already been destroyed at this point, do not call 11629d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy // GL APIs. All GL state should be kept in Caches.h 117e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 118e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 119f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 120f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Setup 121f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 122f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 12385bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::setViewport(int width, int height) { 12408ae317c21ec3086b5017672bba87420cc38a407Romain Guy glViewport(0, 0, width, height); 125260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy mOrthoMatrix.loadOrtho(0, width, height, 0, -1, 1); 126bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 127bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mWidth = width; 128bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mHeight = height; 129eb99356a0548684a501766e6a524529ab93304c8Romain Guy 130eb99356a0548684a501766e6a524529ab93304c8Romain Guy mFirstSnapshot->height = height; 131eb99356a0548684a501766e6a524529ab93304c8Romain Guy mFirstSnapshot->viewport.set(0, 0, width, height); 132e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 133e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 1346b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guyvoid OpenGLRenderer::prepare(bool opaque) { 1358aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mFirstSnapshot, 1368aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag); 1378fb954263dd2f918ad339045cc6d82e346515599Romain Guy mSaveCount = 1; 138f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 139fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glViewport(0, 0, mWidth, mHeight); 140fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy 141d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy glDisable(GL_DITHER); 14208ae317c21ec3086b5017672bba87420cc38a407Romain Guy glDisable(GL_SCISSOR_TEST); 143bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1446b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy if (!opaque) { 1456b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 1466b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy glClear(GL_COLOR_BUFFER_BIT); 1476b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy } 148bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 14908ae317c21ec3086b5017672bba87420cc38a407Romain Guy glEnable(GL_SCISSOR_TEST); 150c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glScissor(0, 0, mWidth, mHeight); 151f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 152b82da65cb1601be504241f36778395cd6cb9f87bRomain Guy mSnapshot->setClip(0.0f, 0.0f, mWidth, mHeight); 153bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 154bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 155b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guyvoid OpenGLRenderer::finish() { 156b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy#if DEBUG_OPENGL 157b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy GLenum status = GL_NO_ERROR; 158b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy while ((status = glGetError()) != GL_NO_ERROR) { 159b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy LOGD("GL error from OpenGLRenderer: 0x%x", status); 160b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 161b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy#endif 162b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy} 163b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy 164da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::acquireContext() { 165da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram) { 166da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram->isInUse()) { 167da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram->remove(); 168da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram = NULL; 169da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 170da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 17150c0f093d942a59d4e01b2c76d26c0e9d6ed796cRomain Guy mCaches.unbindMeshBuffer(); 172da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 173da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 174da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::releaseContext() { 175eb99356a0548684a501766e6a524529ab93304c8Romain Guy glViewport(0, 0, mSnapshot->viewport.getWidth(), mSnapshot->viewport.getHeight()); 176da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 177da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_SCISSOR_TEST); 178da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy setScissorFromClip(); 179da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 180f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glDisable(GL_DITHER); 181f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 182f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, 0); 18303750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); 18450c0f093d942a59d4e01b2c76d26c0e9d6ed796cRomain Guy 18550c0f093d942a59d4e01b2c76d26c0e9d6ed796cRomain Guy mCaches.blend = true; 18650c0f093d942a59d4e01b2c76d26c0e9d6ed796cRomain Guy glEnable(GL_BLEND); 18750c0f093d942a59d4e01b2c76d26c0e9d6ed796cRomain Guy glBlendFunc(mCaches.lastSrcMode, mCaches.lastDstMode); 18850c0f093d942a59d4e01b2c76d26c0e9d6ed796cRomain Guy glBlendEquation(GL_FUNC_ADD); 189da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 190da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 191f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 192f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// State management 193f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 194f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 195bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::getSaveCount() const { 1967ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSaveCount; 197bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 198bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 199bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::save(int flags) { 2008aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveSnapshot(flags); 201bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 202bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 203bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restore() { 2042542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (mSaveCount > 1) { 2052542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2067ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 207bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 208bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 209bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restoreToCount(int saveCount) { 2108fb954263dd2f918ad339045cc6d82e346515599Romain Guy if (saveCount < 1) saveCount = 1; 211bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2128fb954263dd2f918ad339045cc6d82e346515599Romain Guy while (mSaveCount > saveCount) { 2132542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2147ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 215bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 216bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2178aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guyint OpenGLRenderer::saveSnapshot(int flags) { 2188aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mSnapshot, flags); 2198fb954263dd2f918ad339045cc6d82e346515599Romain Guy return mSaveCount++; 220bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 221bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 222bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::restoreSnapshot() { 2237ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = mSnapshot->flags & Snapshot::kFlagClipSet; 224bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy bool restoreLayer = mSnapshot->flags & Snapshot::kFlagIsLayer; 225eb99356a0548684a501766e6a524529ab93304c8Romain Guy bool restoreOrtho = mSnapshot->flags & Snapshot::kFlagDirtyOrtho; 226bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 227bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy sp<Snapshot> current = mSnapshot; 2287ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy sp<Snapshot> previous = mSnapshot->previous; 229bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 230eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (restoreOrtho) { 231eb99356a0548684a501766e6a524529ab93304c8Romain Guy Rect& r = previous->viewport; 232eb99356a0548684a501766e6a524529ab93304c8Romain Guy glViewport(r.left, r.top, r.right, r.bottom); 233eb99356a0548684a501766e6a524529ab93304c8Romain Guy mOrthoMatrix.load(current->orthoMatrix); 234eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 235eb99356a0548684a501766e6a524529ab93304c8Romain Guy 2368b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSaveCount--; 2378b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSnapshot = previous; 2388b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 239bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (restoreLayer) { 240d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy composeLayer(current, previous); 241d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 242bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2432542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (restoreClip) { 2442542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setScissorFromClip(); 2458fb954263dd2f918ad339045cc6d82e346515599Romain Guy } 2462542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 2472542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy return restoreClip; 248d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 2495cbbce535744b89df5ecea95de21ee3733298260Romain Guy 250f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 251bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy// Layers 252bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 253bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 254bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayer(float left, float top, float right, float bottom, 255bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const SkPaint* p, int flags) { 256eb99356a0548684a501766e6a524529ab93304c8Romain Guy const GLuint previousFbo = mSnapshot->fbo; 257eb99356a0548684a501766e6a524529ab93304c8Romain Guy const int count = saveSnapshot(flags); 258d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 259d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int alpha = 255; 260d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy SkXfermode::Mode mode; 261d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 262d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (p) { 263d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy alpha = p->getAlpha(); 264a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 265a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 266a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 267a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 268a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 269a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 270a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 271a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 272d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 273d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } else { 274d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 275d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 276d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 277dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (!mSnapshot->previous->invisible) { 278dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, mode, flags, previousFbo); 279dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy } 280d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 281d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 282bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 283bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 284bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayerAlpha(float left, float top, float right, float bottom, 285bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int alpha, int flags) { 2868aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy if (alpha == 0xff) { 2878aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, NULL, flags); 2888b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } else { 2898aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkPaint paint; 2908aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy paint.setAlpha(alpha); 2918aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, &paint, flags); 2928b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 293d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 294bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2951c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 2961c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Layers are viewed by Skia are slightly different than layers in image editing 2971c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * programs (for instance.) When a layer is created, previously created layers 2981c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * and the frame buffer still receive every drawing command. For instance, if a 2991c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * layer is created and a shape intersecting the bounds of the layers and the 3001c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * framebuffer is draw, the shape will be drawn on both (unless the layer was 3011c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * created with the SkCanvas::kClipToLayer_SaveFlag flag.) 3021c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3031c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * A way to implement layers is to create an FBO for each layer, backed by an RGBA 3041c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * texture. Unfortunately, this is inefficient as it requires every primitive to 3051c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be drawn n + 1 times, where n is the number of active layers. In practice this 3061c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * means, for every primitive: 3071c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Switch active frame buffer 3081c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Change viewport, clip and projection matrix 3091c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Issue the drawing 3101c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3111c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Switching rendering target n + 1 times per drawn primitive is extremely costly. 3126b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy * To avoid this, layers are implemented in a different way here, at least in the 3136b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy * general case. FBOs are used, as an optimization, when the "clip to layer" flag 3146b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy * is set. When this flag is set we can redirect all drawing operations into a 3156b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy * single FBO. 3161c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3171c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * This implementation relies on the frame buffer being at least RGBA 8888. When 3181c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * a layer is created, only a texture is created, not an FBO. The content of the 3191c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer contained within the layer's bounds is copied into this texture 32087a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * using glCopyTexImage2D(). The layer's region is then cleared(1) in the frame 3211c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * buffer and drawing continues as normal. This technique therefore treats the 3221c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer as a scratch buffer for the layers. 3231c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3241c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * To compose the layers back onto the frame buffer, each layer texture 3251c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * (containing the original frame buffer data) is drawn as a simple quad over 3261c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * the frame buffer. The trick is that the quad is set as the composition 3271c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * destination in the blending equation, and the frame buffer becomes the source 3281c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * of the composition. 3291c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3301c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Drawing layers with an alpha value requires an extra step before composition. 3311c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * An empty quad is drawn over the layer's region in the frame buffer. This quad 3321c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is drawn with the rgba color (0,0,0,alpha). The alpha value offered by the 3331c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * quad is used to multiply the colors in the frame buffer. This is achieved by 3341c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * changing the GL blend functions for the GL_FUNC_ADD blend equation to 3351c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * GL_ZERO, GL_SRC_ALPHA. 3361c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3371c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Because glCopyTexImage2D() can be slow, an alternative implementation might 3381c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be use to draw a single clipped layer. The implementation described above 3391c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is correct in every case. 34087a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * 34187a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * (1) The frame buffer is actually not cleared right away. To allow the GPU 34287a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * to potentially optimize series of calls to glCopyTexImage2D, the frame 34387a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * buffer is left untouched until the first drawing operation. Only when 34487a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * something actually gets drawn are the layers regions cleared. 3451c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 346d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guybool OpenGLRenderer::createLayer(sp<Snapshot> snapshot, float left, float top, 347eb99356a0548684a501766e6a524529ab93304c8Romain Guy float right, float bottom, int alpha, SkXfermode::Mode mode, 348eb99356a0548684a501766e6a524529ab93304c8Romain Guy int flags, GLuint previousFbo) { 349eb99356a0548684a501766e6a524529ab93304c8Romain Guy LAYER_LOGD("Requesting layer %.2fx%.2f", right - left, bottom - top); 350fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy LAYER_LOGD("Layer cache size = %d", mCaches.layerCache.getSize()); 351dda570201ac851dd85af3861f7e575721d3345daRomain Guy 352eb99356a0548684a501766e6a524529ab93304c8Romain Guy const bool fboLayer = flags & SkCanvas::kClipToLayer_SaveFlag; 353eb99356a0548684a501766e6a524529ab93304c8Romain Guy 354f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Window coordinates of the layer 3558aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy Rect bounds(left, top, right, bottom); 356eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (!fboLayer) { 357eb99356a0548684a501766e6a524529ab93304c8Romain Guy mSnapshot->transform->mapRect(bounds); 358eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Layers only make sense if they are in the framebuffer's bounds 359eb99356a0548684a501766e6a524529ab93304c8Romain Guy bounds.intersect(*mSnapshot->clipRect); 360eb99356a0548684a501766e6a524529ab93304c8Romain Guy bounds.snapToPixelBoundaries(); 361eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 362bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy 363b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy if (bounds.isEmpty() || bounds.getWidth() > mMaxTextureSize || 364b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy bounds.getHeight() > mMaxTextureSize) { 365dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy snapshot->invisible = true; 366dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy } else { 367dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy // TODO: Should take the mode into account 368d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy snapshot->invisible = snapshot->previous->invisible || 369d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy (alpha <= ALPHA_THRESHOLD && fboLayer); 370dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy } 371dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 372dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy // Bail out if we won't draw in this snapshot 373dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (snapshot->invisible) { 374b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy return false; 375b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 376dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3770bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy glActiveTexture(GL_TEXTURE0); 3780bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy 3798550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy Layer* layer = mCaches.layerCache.get(bounds.getWidth(), bounds.getHeight()); 380f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy if (!layer) { 381f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy return false; 382bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 383bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 384dda570201ac851dd85af3861f7e575721d3345daRomain Guy layer->mode = mode; 385f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy layer->alpha = alpha; 3868aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy layer->layer.set(bounds); 3878550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy layer->texCoords.set(0.0f, bounds.getHeight() / float(layer->height), 3888550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy bounds.getWidth() / float(layer->width), 0.0f); 389dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3908fb954263dd2f918ad339045cc6d82e346515599Romain Guy // Save the layer in the snapshot 3918fb954263dd2f918ad339045cc6d82e346515599Romain Guy snapshot->flags |= Snapshot::kFlagIsLayer; 392dda570201ac851dd85af3861f7e575721d3345daRomain Guy snapshot->layer = layer; 3931d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 394eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (fboLayer) { 395eb99356a0548684a501766e6a524529ab93304c8Romain Guy layer->fbo = mCaches.fboCache.get(); 39638c85b907a478af96d71b9a5df5a2066b8475311Romain Guy 397eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->flags |= Snapshot::kFlagIsFboLayer; 398eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->fbo = layer->fbo; 399eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->resetTransform(-bounds.left, -bounds.top, 0.0f); 400eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->resetClip(0.0f, 0.0f, bounds.getWidth(), bounds.getHeight()); 401eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->viewport.set(0.0f, 0.0f, bounds.getWidth(), bounds.getHeight()); 402eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->height = bounds.getHeight(); 403eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->flags |= Snapshot::kFlagDirtyOrtho; 404eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->orthoMatrix.load(mOrthoMatrix); 4050bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy 406eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Bind texture to FBO 407eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, layer->fbo); 408eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindTexture(GL_TEXTURE_2D, layer->texture); 409eb99356a0548684a501766e6a524529ab93304c8Romain Guy 410eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Initialize the texture if needed 411eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (layer->empty) { 412eb99356a0548684a501766e6a524529ab93304c8Romain Guy layer->empty = false; 4138550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, layer->width, layer->height, 0, 414eb99356a0548684a501766e6a524529ab93304c8Romain Guy GL_RGBA, GL_UNSIGNED_BYTE, NULL); 415eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 416eb99356a0548684a501766e6a524529ab93304c8Romain Guy 417eb99356a0548684a501766e6a524529ab93304c8Romain Guy glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 418eb99356a0548684a501766e6a524529ab93304c8Romain Guy layer->texture, 0); 419eb99356a0548684a501766e6a524529ab93304c8Romain Guy 420e91080581f467d55913a8c5ab53dedc2dab2e5b6Romain Guy#if DEBUG_LAYERS 421eb99356a0548684a501766e6a524529ab93304c8Romain Guy GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); 422eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (status != GL_FRAMEBUFFER_COMPLETE) { 423eb99356a0548684a501766e6a524529ab93304c8Romain Guy LOGE("Framebuffer incomplete (GL error code 0x%x)", status); 424eb99356a0548684a501766e6a524529ab93304c8Romain Guy 425eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previousFbo); 426eb99356a0548684a501766e6a524529ab93304c8Romain Guy glDeleteTextures(1, &layer->texture); 427eb99356a0548684a501766e6a524529ab93304c8Romain Guy mCaches.fboCache.put(layer->fbo); 428eb99356a0548684a501766e6a524529ab93304c8Romain Guy 429eb99356a0548684a501766e6a524529ab93304c8Romain Guy delete layer; 430eb99356a0548684a501766e6a524529ab93304c8Romain Guy 431eb99356a0548684a501766e6a524529ab93304c8Romain Guy return false; 432eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 433e91080581f467d55913a8c5ab53dedc2dab2e5b6Romain Guy#endif 434eb99356a0548684a501766e6a524529ab93304c8Romain Guy 435eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Clear the FBO 43693d2361c6d294c390cb5c4a13bd1b88dcd465fd7Romain Guy glScissor(0.0f, 0.0f, bounds.getWidth() + 1.0f, bounds.getHeight() + 1.0f); 437eb99356a0548684a501766e6a524529ab93304c8Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 438eb99356a0548684a501766e6a524529ab93304c8Romain Guy glClear(GL_COLOR_BUFFER_BIT); 439eb07af687319a0f52c219c3c0c1b73162fce9d04Romain Guy 440eb07af687319a0f52c219c3c0c1b73162fce9d04Romain Guy setScissorFromClip(); 441eb99356a0548684a501766e6a524529ab93304c8Romain Guy 442eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Change the ortho projection 443eb99356a0548684a501766e6a524529ab93304c8Romain Guy glViewport(0, 0, bounds.getWidth(), bounds.getHeight()); 444eb99356a0548684a501766e6a524529ab93304c8Romain Guy mOrthoMatrix.loadOrtho(0.0f, bounds.getWidth(), bounds.getHeight(), 0.0f, -1.0f, 1.0f); 445eb99356a0548684a501766e6a524529ab93304c8Romain Guy } else { 446eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Copy the framebuffer into the layer 447eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindTexture(GL_TEXTURE_2D, layer->texture); 448eb99356a0548684a501766e6a524529ab93304c8Romain Guy 449c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy if (layer->empty) { 450c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bounds.left, mHeight - bounds.bottom, 451c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy layer->width, layer->height, 0); 452c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy layer->empty = false; 453c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy } else { 454c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bounds.left, mHeight - bounds.bottom, 455c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy bounds.getWidth(), bounds.getHeight()); 456c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy } 457eb99356a0548684a501766e6a524529ab93304c8Romain Guy 458eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Enqueue the buffer coordinates to clear the corresponding region later 459eb99356a0548684a501766e6a524529ab93304c8Romain Guy mLayers.push(new Rect(bounds)); 460eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 461f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 462d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return true; 463bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 464bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 4651c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 4661c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Read the documentation of createLayer() before doing anything in this method. 4671c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 4681d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guyvoid OpenGLRenderer::composeLayer(sp<Snapshot> current, sp<Snapshot> previous) { 4691d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy if (!current->layer) { 4701d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LOGE("Attempting to compose a layer that does not exist"); 4711d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy return; 4721d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 4731d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 474eb99356a0548684a501766e6a524529ab93304c8Romain Guy const bool fboLayer = current->flags & SkCanvas::kClipToLayer_SaveFlag; 475eb99356a0548684a501766e6a524529ab93304c8Romain Guy 476eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (fboLayer) { 477eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Unbind current FBO and restore previous one 478eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previous->fbo); 479eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 480eb99356a0548684a501766e6a524529ab93304c8Romain Guy 4811d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Restore the clip from the previous snapshot 4828aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *previous->clipRect; 483eb99356a0548684a501766e6a524529ab93304c8Romain Guy glScissor(clip.left, previous->height - clip.bottom, clip.getWidth(), clip.getHeight()); 4841d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4851d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Layer* layer = current->layer; 4861d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy const Rect& rect = layer->layer; 4871d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 488eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (!fboLayer && layer->alpha < 255) { 489f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawColorRect(rect.left, rect.top, rect.right, rect.bottom, 4901c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy layer->alpha << 24, SkXfermode::kDstIn_Mode, true); 491f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 492f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 4938550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy const Rect& texCoords = layer->texCoords; 49403750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.unbindMeshBuffer(); 4958550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy resetDrawTextureTexCoords(texCoords.left, texCoords.top, texCoords.right, texCoords.bottom); 4968b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 497eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (fboLayer) { 49803750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy drawTextureMesh(rect.left, rect.top, rect.right, rect.bottom, layer->texture, 49903750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy layer->alpha / 255.0f, layer->mode, layer->blend, &mMeshVertices[0].position[0], 50003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy &mMeshVertices[0].texture[0], GL_TRIANGLE_STRIP, gMeshCount); 501eb99356a0548684a501766e6a524529ab93304c8Romain Guy } else { 502eb99356a0548684a501766e6a524529ab93304c8Romain Guy drawTextureMesh(rect.left, rect.top, rect.right, rect.bottom, layer->texture, 503eb99356a0548684a501766e6a524529ab93304c8Romain Guy 1.0f, layer->mode, layer->blend, &mMeshVertices[0].position[0], 504eb99356a0548684a501766e6a524529ab93304c8Romain Guy &mMeshVertices[0].texture[0], GL_TRIANGLE_STRIP, gMeshCount, true, true); 505eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 5061d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 5078b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 5088b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 509eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (fboLayer) { 510eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Detach the texture from the FBO 511eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, current->fbo); 512eb99356a0548684a501766e6a524529ab93304c8Romain Guy glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0); 513eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previous->fbo); 514eb99356a0548684a501766e6a524529ab93304c8Romain Guy 515eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Put the FBO name back in the cache, if it doesn't fit, it will be destroyed 516eb99356a0548684a501766e6a524529ab93304c8Romain Guy mCaches.fboCache.put(current->fbo); 517eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 518eb99356a0548684a501766e6a524529ab93304c8Romain Guy 519eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Failing to add the layer to the cache should happen only if the layer is too large 5208550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy if (!mCaches.layerCache.put(layer)) { 5211d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LAYER_LOGD("Deleting layer"); 5221d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy glDeleteTextures(1, &layer->texture); 5231d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy delete layer; 5241d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 5251d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy} 5261d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 5278694230ff25fa0a60e480d424843e56b718f0516Romain Guyvoid OpenGLRenderer::clearLayerRegions() { 528dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mLayers.size() == 0 || mSnapshot->invisible) return; 5298694230ff25fa0a60e480d424843e56b718f0516Romain Guy 5308694230ff25fa0a60e480d424843e56b718f0516Romain Guy for (uint32_t i = 0; i < mLayers.size(); i++) { 5318694230ff25fa0a60e480d424843e56b718f0516Romain Guy Rect* bounds = mLayers.itemAt(i); 5328694230ff25fa0a60e480d424843e56b718f0516Romain Guy 5338694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Clear the framebuffer where the layer will draw 534d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy glScissor(bounds->left, mSnapshot->height - bounds->bottom, 5358694230ff25fa0a60e480d424843e56b718f0516Romain Guy bounds->getWidth(), bounds->getHeight()); 5368694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 5378694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClear(GL_COLOR_BUFFER_BIT); 5388694230ff25fa0a60e480d424843e56b718f0516Romain Guy 5398694230ff25fa0a60e480d424843e56b718f0516Romain Guy delete bounds; 5408694230ff25fa0a60e480d424843e56b718f0516Romain Guy } 5418694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.clear(); 5428694230ff25fa0a60e480d424843e56b718f0516Romain Guy 5438694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Restore the clip 5448694230ff25fa0a60e480d424843e56b718f0516Romain Guy setScissorFromClip(); 5458694230ff25fa0a60e480d424843e56b718f0516Romain Guy} 5468694230ff25fa0a60e480d424843e56b718f0516Romain Guy 547bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 548f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Transforms 549f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 550f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 551f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::translate(float dx, float dy) { 5528aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->translate(dx, dy, 0.0f); 553f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 554f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 555f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::rotate(float degrees) { 5568aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->rotate(degrees, 0.0f, 0.0f, 1.0f); 557f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 558f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 559f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::scale(float sx, float sy) { 5608aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->scale(sx, sy, 1.0f); 561f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 562f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 563f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::setMatrix(SkMatrix* matrix) { 5648aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->load(*matrix); 565f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 566f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 56741030da16856c8869e1e51d4a0405432fa96614eRomain Guyconst float* OpenGLRenderer::getMatrix() const { 56899bcdc52dcb365ed7d8cfa13540fb33fbcbbac9dRomain Guy if (mSnapshot->fbo != 0) { 56999bcdc52dcb365ed7d8cfa13540fb33fbcbbac9dRomain Guy return &mSnapshot->transform->data[0]; 57099bcdc52dcb365ed7d8cfa13540fb33fbcbbac9dRomain Guy } 57199bcdc52dcb365ed7d8cfa13540fb33fbcbbac9dRomain Guy return &mIdentity.data[0]; 57241030da16856c8869e1e51d4a0405432fa96614eRomain Guy} 57341030da16856c8869e1e51d4a0405432fa96614eRomain Guy 574f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::getMatrix(SkMatrix* matrix) { 5758aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->copyTo(*matrix); 576f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 577f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 578f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::concatMatrix(SkMatrix* matrix) { 579e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy SkMatrix transform; 580e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy mSnapshot->transform->copyTo(transform); 581e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy transform.preConcat(*matrix); 582e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy mSnapshot->transform->load(transform); 583f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 584f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 585f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 586f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Clipping 587f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 588f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 589bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::setScissorFromClip() { 590e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy Rect clip(*mSnapshot->clipRect); 591e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy clip.snapToPixelBoundaries(); 592eb99356a0548684a501766e6a524529ab93304c8Romain Guy glScissor(clip.left, mSnapshot->height - clip.bottom, clip.getWidth(), clip.getHeight()); 5939d5316e3f56d138504565ff311145ac01621dff4Romain Guy} 5949d5316e3f56d138504565ff311145ac01621dff4Romain Guy 5959d5316e3f56d138504565ff311145ac01621dff4Romain Guyconst Rect& OpenGLRenderer::getClipBounds() { 596079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return mSnapshot->getLocalClip(); 597bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 598bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 599c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guybool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) { 600dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mSnapshot->invisible) { 601dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy return true; 602dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy } 603dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 6041d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Rect r(left, top, right, bottom); 6058aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->mapRect(r); 606d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy r.snapToPixelBoundaries(); 607d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy 608d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy Rect clipRect(*mSnapshot->clipRect); 609d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy clipRect.snapToPixelBoundaries(); 610d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy 611d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy return !clipRect.intersects(r); 612c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 613c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy 614079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guybool OpenGLRenderer::clipRect(float left, float top, float right, float bottom, SkRegion::Op op) { 615079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bool clipped = mSnapshot->clip(left, top, right, bottom, op); 6167ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (clipped) { 6177ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 6187ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 6198aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->isEmpty(); 620e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 621e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 622f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 623f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Drawing 624f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 625f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 626c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, float left, float top, const SkPaint* paint) { 6276926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float right = left + bitmap->width(); 6286926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float bottom = top + bitmap->height(); 6296926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 6306926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 6316926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6326926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6336926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 63461c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 635fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 6369cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 63722158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 63822158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 6396926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy drawTextureRect(left, top, right, bottom, texture, paint); 6408ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 6418ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 642f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, const SkMatrix* matrix, const SkPaint* paint) { 643f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy Rect r(0.0f, 0.0f, bitmap->width(), bitmap->height()); 644f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const mat4 transform(*matrix); 645f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy transform.mapRect(r); 646f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 6476926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(r.left, r.top, r.right, r.bottom)) { 6486926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6496926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6506926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 65161c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 652fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 6539cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 65422158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 65522158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 65682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(r.left, r.top, r.right, r.bottom, texture, paint); 657f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy} 658f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 6598ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, 6608ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float srcLeft, float srcTop, float srcRight, float srcBottom, 6618ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float dstLeft, float dstTop, float dstRight, float dstBottom, 662f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const SkPaint* paint) { 6636926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(dstLeft, dstTop, dstRight, dstBottom)) { 6646926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6656926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6666926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 66761c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 668fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 6699cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 67022158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 6718ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 6728ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float width = texture->width; 6738ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float height = texture->height; 674c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 6758ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u1 = srcLeft / width; 6768ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v1 = srcTop / height; 6778ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u2 = srcRight / width; 6788ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v2 = srcBottom / height; 679c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 68003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.unbindMeshBuffer(); 6818ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(u1, v1, u2, v2); 6828ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 68303750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy int alpha; 68403750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy SkXfermode::Mode mode; 68503750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy getAlphaAndMode(paint, &alpha, &mode); 68603750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy 68703750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy drawTextureMesh(dstLeft, dstTop, dstRight, dstBottom, texture->id, alpha / 255.0f, 68803750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mode, texture->blend, &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], 68903750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy GL_TRIANGLE_STRIP, gMeshCount); 6908ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 6918ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 692ce0537b80087a6225273040a987414b1dd081aa0Romain Guy} 693ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 6944aa90573bbf86db0d33a3a790c5dbd0d93b95cfeRomain Guyvoid OpenGLRenderer::drawPatch(SkBitmap* bitmap, const int32_t* xDivs, const int32_t* yDivs, 6954bb942083a0d4db746adf95349108dd8ef842e32Romain Guy const uint32_t* colors, uint32_t width, uint32_t height, int8_t numColors, 6964bb942083a0d4db746adf95349108dd8ef842e32Romain Guy float left, float top, float right, float bottom, const SkPaint* paint) { 6976926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 6986926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6996926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 7006926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 70161c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 702fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 7039cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 70422158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 705f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 706f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy int alpha; 707f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy SkXfermode::Mode mode; 708f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy getAlphaAndMode(paint, &alpha, &mode); 709f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 7102728f961614a385df1f056fc24803a9f65c90fabRomain Guy const Patch* mesh = mCaches.patchCache.get(bitmap->width(), bitmap->height(), 7114bb942083a0d4db746adf95349108dd8ef842e32Romain Guy right - left, bottom - top, xDivs, yDivs, colors, width, height, numColors); 712f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 713054dc1840941665e32036f9523df51720ad069c8Romain Guy if (mesh) { 714054dc1840941665e32036f9523df51720ad069c8Romain Guy // Specify right and bottom as +1.0f from left/top to prevent scaling since the 715054dc1840941665e32036f9523df51720ad069c8Romain Guy // patch mesh already defines the final size 716054dc1840941665e32036f9523df51720ad069c8Romain Guy drawTextureMesh(left, top, left + 1.0f, top + 1.0f, texture->id, alpha / 255.0f, 71703750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mode, texture->blend, (GLvoid*) 0, (GLvoid*) gMeshTextureOffset, 71803750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy GL_TRIANGLES, mesh->verticesCount, false, false, mesh->meshBuffer); 719054dc1840941665e32036f9523df51720ad069c8Romain Guy } 720f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 721f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 722759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guyvoid OpenGLRenderer::drawLines(float* points, int count, const SkPaint* paint) { 723dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mSnapshot->invisible) return; 724dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 725759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy int alpha; 726759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy SkXfermode::Mode mode; 727759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy getAlphaAndMode(paint, &alpha, &mode); 728759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 729759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy uint32_t color = paint->getColor(); 730759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat a = alpha / 255.0f; 731759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 732759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 733759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 734759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 735c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const bool isAA = paint->isAntiAlias(); 736c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (isAA) { 737c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy GLuint textureUnit = 0; 73829d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy setupTextureAlpha8(mCaches.line.getTexture(), 0, 0, textureUnit, 0.0f, 0.0f, r, g, b, a, 73903750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mode, false, true, (GLvoid*) 0, (GLvoid*) gMeshTextureOffset, 74003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.line.getMeshBuffer()); 741c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } else { 742c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy setupColorRect(0.0f, 0.0f, 1.0f, 1.0f, r, g, b, a, mode, false); 743c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 744c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 745c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const float strokeWidth = paint->getStrokeWidth(); 74629d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy const GLsizei elementsCount = isAA ? mCaches.line.getElementsCount() : gMeshCount; 747c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const GLenum drawMode = isAA ? GL_TRIANGLES : GL_TRIANGLE_STRIP; 748759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 749759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy for (int i = 0; i < count; i += 4) { 750759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy float tx = 0.0f; 751759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy float ty = 0.0f; 752759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 753c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (isAA) { 75429d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy mCaches.line.update(points[i], points[i + 1], points[i + 2], points[i + 3], 755c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy strokeWidth, tx, ty); 756c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } else { 757b5ab4173e0927e4668a45298c9900cd8007584e1Romain Guy ty = strokeWidth <= 1.0f ? 0.0f : -strokeWidth * 0.5f; 758c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 759759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 760759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float dx = points[i + 2] - points[i]; 761759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float dy = points[i + 3] - points[i + 1]; 762759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float mag = sqrtf(dx * dx + dy * dy); 763759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float angle = acos(dx / mag); 764759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 765759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.loadTranslate(points[i], points[i + 1], 0.0f); 766759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy if (angle > MIN_ANGLE || angle < -MIN_ANGLE) { 767759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.rotate(angle * RAD_TO_DEG, 0.0f, 0.0f, 1.0f); 768759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 769759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.translate(tx, ty, 0.0f); 770c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (!isAA) { 77129d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy float length = mCaches.line.getLength(points[i], points[i + 1], 77229d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy points[i + 2], points[i + 3]); 773c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy mModelView.scale(length, strokeWidth, 1.0f); 774c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 775759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 776759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 777759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy if (mShader) { 778759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mShader->updateTransforms(mCaches.currentProgram, mModelView, *mSnapshot); 779759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 780759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 781c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy glDrawArrays(drawMode, 0, elementsCount); 782759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 783759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 78429d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy if (isAA) { 78529d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 78629d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy } 787759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy} 788759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 78985bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) { 7908aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *mSnapshot->clipRect; 7913d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode, true); 792c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 7939d5316e3f56d138504565ff311145ac01621dff4Romain Guy 794bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawRect(float left, float top, float right, float bottom, const SkPaint* p) { 7956926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 7966926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 7976926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 7986926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 799026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy SkXfermode::Mode mode; 800a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 801a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 802a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 803a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 804a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 805a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 806a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 807a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 808026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 809026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 810026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Skia draws using the color's alpha channel if < 255 811026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Otherwise, it uses the paint's alpha 812026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color = p->getColor(); 813d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (((color >> 24) & 0xff) == 255) { 814026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy color |= p->getAlpha() << 24; 815026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 816026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 817026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(left, top, right, bottom, color, mode); 818c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 8199d5316e3f56d138504565ff311145ac01621dff4Romain Guy 820e8e62a4a032a80409114a37908b5f18ab0080848Romain Guyvoid OpenGLRenderer::drawText(const char* text, int bytesCount, int count, 821e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy float x, float y, SkPaint* paint) { 822f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (text == NULL || count == 0 || (paint->getAlpha() == 0 && paint->getXfermode() == NULL)) { 823e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy return; 824e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 825dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mSnapshot->invisible) return; 826e2d345ea67e2960b37bfdc0fc8626d1bfa747404Romain Guy 827f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy paint->setAntiAlias(true); 828e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 829a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy float length = -1.0f; 830e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy switch (paint->getTextAlign()) { 831e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kCenter_Align: 832e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 833e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length / 2.0f; 834e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 835e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kRight_Align: 836e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 837e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length; 838e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 839e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy default: 840e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 841e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 842e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 843694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy int alpha; 844694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy SkXfermode::Mode mode; 845694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy getAlphaAndMode(paint, &alpha, &mode); 846694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 8472542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy uint32_t color = paint->getColor(); 8482542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = alpha / 255.0f; 8492542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 8502542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 8512542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 8522542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 853b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy FontRenderer& fontRenderer = mCaches.fontRenderer.getFontRenderer(paint); 854b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.setFont(paint, SkTypeface::UniqueID(paint->getTypeface()), 855fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy paint->getTextSize()); 856e2d345ea67e2960b37bfdc0fc8626d1bfa747404Romain Guy 8579d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy Rect clipRect(*mSnapshot->clipRect); 8589d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy glScissor(clipRect.left, mSnapshot->height - clipRect.bottom, 8599d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy clipRect.getWidth(), clipRect.getHeight()); 8609d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy 8611e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy if (mHasShadow) { 8621e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy glActiveTexture(gTextureUnits[0]); 863b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy mCaches.dropShadowCache.setFontRenderer(fontRenderer); 864fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const ShadowTexture* shadow = mCaches.dropShadowCache.get(paint, text, bytesCount, 8651e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy count, mShadowRadius); 8661e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy const AutoTexture autoCleanup(shadow); 8670a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8682542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setupShadow(shadow, x, y, mode, a); 8690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8700a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 8710a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 872fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 8731e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy } 8741e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 87506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 876db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 87706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 878e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy // Assume that the modelView matrix does not force scales, rotates, etc. 879e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy const bool linearFilter = mSnapshot->transform->changesBounds(); 880e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy setupTextureAlpha8(fontRenderer.getTexture(linearFilter), 0, 0, textureUnit, 88103750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy x, y, r, g, b, a, mode, false, true, NULL, NULL); 88206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 88309147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy const Rect& clip = mSnapshot->getLocalClip(); 8848694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 8859d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy 88603750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.unbindMeshBuffer(); 887b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.renderText(paint, &clip, text, 0, bytesCount, count, x, y); 888694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 889694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); 890fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 891a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy 8920a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawTextDecorations(text, bytesCount, length, x, y, paint); 8939d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy 8949d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy setScissorFromClip(); 895694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy} 896694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 8977fbcc0492fca03857e3c45064f4aa040af817d55Romain Guyvoid OpenGLRenderer::drawPath(SkPath* path, SkPaint* paint) { 898dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mSnapshot->invisible) return; 899dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 9007fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy GLuint textureUnit = 0; 9017fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 9027fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 903fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const PathTexture* texture = mCaches.pathCache.get(path, paint); 9049cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 90522158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 9067fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 9078b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float x = texture->left - texture->offset; 9088b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float y = texture->top - texture->offset; 9098b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 9108b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy if (quickReject(x, y, x + texture->width, y + texture->height)) { 9118b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy return; 9128b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 9138b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 9147fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy int alpha; 9157fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy SkXfermode::Mode mode; 9167fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy getAlphaAndMode(paint, &alpha, &mode); 9177fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 9187fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy uint32_t color = paint->getColor(); 9197fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat a = alpha / 255.0f; 9207fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 9217fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 9227fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 9237fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 9240a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, x, y, r, g, b, a, mode, true, true); 9250a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9268694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 9278694230ff25fa0a60e480d424843e56b718f0516Romain Guy 9280a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 9290a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 930fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 9317fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy} 9327fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 9336926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 934d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy// Shaders 935d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 936d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 937d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guyvoid OpenGLRenderer::resetShader() { 93806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 93906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy} 94006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 94106f96e2652e4855b6520ad9dd70583677605b79aRomain Guyvoid OpenGLRenderer::setupShader(SkiaShader* shader) { 94206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = shader; 94306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 944fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->set(&mCaches.textureCache, &mCaches.gradientCache); 94506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy } 9467fac2e18339f765320d759e8d4c090f92431959eRomain Guy} 9477fac2e18339f765320d759e8d4c090f92431959eRomain Guy 948d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 949db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy// Color filters 950db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 951db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 952db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::resetColorFilter() { 953db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 954db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 955db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 956db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::setupColorFilter(SkiaColorFilter* filter) { 957db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = filter; 958db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 959db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 960db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 9611e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy// Drop shadow 9621e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 9631e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 9641e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::resetShadow() { 9651e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 9661e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 9671e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 9681e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::setupShadow(float radius, float dx, float dy, int color) { 9691e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = true; 9701e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowRadius = radius; 9711e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDx = dx; 9721e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDy = dy; 9731e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowColor = color; 9741e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 9751e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 9761e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 9776926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy// Drawing implementation 9786926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 9796926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 9800a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupShadow(const ShadowTexture* texture, float x, float y, 9812542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy SkXfermode::Mode mode, float alpha) { 9820a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sx = x - texture->left + mShadowDx; 9830a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sy = y - texture->top + mShadowDy; 9840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9852542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const int shadowAlpha = ((mShadowColor >> 24) & 0xFF); 9862542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = shadowAlpha < 255 ? shadowAlpha / 255.0f : alpha; 9870a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat r = a * ((mShadowColor >> 16) & 0xFF) / 255.0f; 9880a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat g = a * ((mShadowColor >> 8) & 0xFF) / 255.0f; 9890a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat b = a * ((mShadowColor ) & 0xFF) / 255.0f; 9900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9910a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint textureUnit = 0; 9920a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, sx, sy, r, g, b, a, mode, true, false); 9930a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 9940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9950a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(const Texture* texture, GLuint& textureUnit, 9960a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, float r, float g, float b, float a, SkXfermode::Mode mode, 9970a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bool transforms, bool applyFilters) { 9980a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture->id, texture->width, texture->height, textureUnit, 999759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy x, y, r, g, b, a, mode, transforms, applyFilters, 100003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy (GLvoid*) 0, (GLvoid*) gMeshTextureOffset); 10010a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 10020a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10030a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 10040a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 10050a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters) { 100603750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy setupTextureAlpha8(texture, width, height, textureUnit, x, y, r, g, b, a, mode, 100703750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy transforms, applyFilters, (GLvoid*) 0, (GLvoid*) gMeshTextureOffset); 1008759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy} 1009759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 1010759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 1011759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 1012759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters, 101303750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy GLvoid* vertices, GLvoid* texCoords, GLuint vbo) { 10140a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Describe the required shaders 10150a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy ProgramDescription description; 10160a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasTexture = true; 10170a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasAlpha8Texture = true; 1018707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy const bool setColor = description.setAlpha8Color(r, g, b, a); 10190a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10200a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 10210a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 10220a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mShader->describe(description, mExtensions); 10230a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10240a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 10250a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mColorFilter->describe(description, mExtensions); 10260a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10270a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10280a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1029a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Setup the blending mode 1030a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy chooseBlending(true, mode, description); 1031a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 10320a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Build and use the appropriate shader 1033fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 10340a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10350a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, textureUnit); 1036fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), textureUnit); 10370a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1038fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 10390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glEnableVertexAttribArray(texCoordsSlot); 10400a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 104103750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy if (texCoords) { 104203750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy // Setup attributes 104303750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy if (!vertices) { 104403750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.bindMeshBuffer(vbo == 0 ? mCaches.meshBuffer : vbo); 104503750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy } else { 104603750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.unbindMeshBuffer(); 104703750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy } 104803750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 104903750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy gMeshStride, vertices); 105003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, gMeshStride, texCoords); 105103750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy } 10520a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10530a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup uniforms 10540a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (transforms) { 10550a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadTranslate(x, y, 0.0f); 10560a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.scale(width, height, 1.0f); 10570a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } else { 10580a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadIdentity(); 10590a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10608aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1061707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy if (setColor) { 1062707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy mCaches.currentProgram->setColor(r, g, b, a); 1063707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy } 10640a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10650a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy textureUnit++; 10660a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 10670a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes and uniforms required by the shaders 10680a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 1069fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 10700a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10710a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 1072fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 10730a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10740a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10750a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 10760a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1077f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy// Same values used by Skia 10780a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdStrikeThru_Offset (-6.0f / 21.0f) 10790a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Offset (1.0f / 9.0f) 10800a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Thickness (1.0f / 18.0f) 10810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10820a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::drawTextDecorations(const char* text, int bytesCount, float length, 10830a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, SkPaint* paint) { 10840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Handle underline and strike-through 10850a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy uint32_t flags = paint->getFlags(); 10860a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) { 10870a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float underlineWidth = length; 10880a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // If length is > 0.0f, we already measured the text for the text alignment 10890a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (length <= 0.0f) { 10900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy underlineWidth = paint->measureText(text, bytesCount); 10910a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10920a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10930a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float offsetX = 0; 10940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy switch (paint->getTextAlign()) { 10950a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kCenter_Align: 10960a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth * 0.5f; 10970a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 10980a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kRight_Align: 10990a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth; 11000a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 11010a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy default: 11020a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 11030a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11040a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 11050a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (underlineWidth > 0.0f) { 1106e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const float textSize = paint->getTextSize(); 1107e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const float strokeWidth = textSize * kStdUnderline_Thickness; 11080a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1109e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const float left = x - offsetX; 11100a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float top = 0.0f; 1111e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy 1112e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const int pointsCount = 4 * (flags & SkPaint::kStrikeThruText_Flag ? 2 : 1); 1113e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy float points[pointsCount]; 1114e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy int currentPoint = 0; 11150a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 11160a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kUnderlineText_Flag) { 11170a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdUnderline_Offset; 1118e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left; 1119e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 1120e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left + underlineWidth; 1121e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 11220a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11230a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 11240a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kStrikeThruText_Flag) { 11250a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdStrikeThru_Offset; 1126e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left; 1127e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 1128e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left + underlineWidth; 1129e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 11300a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 1131e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy 1132e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy SkPaint linesPaint(*paint); 1133e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy linesPaint.setStrokeWidth(strokeWidth); 1134e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy 1135e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy drawLines(&points[0], pointsCount, &linesPaint); 11360a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11370a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11380a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 11390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1140026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, 11411c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy int color, SkXfermode::Mode mode, bool ignoreTransform) { 11428694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 11438694230ff25fa0a60e480d424843e56b718f0516Romain Guy 1144d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // If a shader is set, preserve only the alpha 114506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 1146d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy color |= 0x00ffffff; 1147d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 1148d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 1149d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // Render using pre-multiplied alpha 1150026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const int alpha = (color >> 24) & 0xFF; 1151d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy const GLfloat a = alpha / 255.0f; 1152c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 1153c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 1154c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 1155c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 1156c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy setupColorRect(left, top, right, bottom, r, g, b, a, mode, ignoreTransform); 1157c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 1158c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy // Draw the mesh 1159c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 1160c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy} 1161c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 1162c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guyvoid OpenGLRenderer::setupColorRect(float left, float top, float right, float bottom, 1163c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy float r, float g, float b, float a, SkXfermode::Mode mode, bool ignoreTransform) { 116406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 11659d5316e3f56d138504565ff311145ac01621dff4Romain Guy 116606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Describe the required shaders 1167889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 1168707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy const bool setColor = description.setColor(r, g, b, a); 1169707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy 117006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 117106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader->describe(description, mExtensions); 1172c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 1173db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1174db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 1175db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1176c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 11771c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy // Setup the blending mode 1178c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy chooseBlending(a < 1.0f || (mShader && mShader->blend()), mode, description); 1179a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 118006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Build and use the appropriate shader 1181fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 1182c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 118306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes 118403750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.bindMeshBuffer(); 1185fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 118603750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy gMeshStride, 0); 1187c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 118806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup uniforms 1189889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.loadTranslate(left, top, 0.0f); 1190889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 119106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (!ignoreTransform) { 11928aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1193889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } else { 119406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mat4 identity; 1195fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, identity); 1196889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 1197707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy mCaches.currentProgram->setColor(r, g, b, a); 1198d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 119906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes and uniforms required by the shaders 120006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 1201fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 1202d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 1203db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1204fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1205db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1206d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy} 1207d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 120882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 1209a979474f15b454c8e2963f239a3770e200bb227cRomain Guy const Texture* texture, const SkPaint* paint) { 121082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy int alpha; 121182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy SkXfermode::Mode mode; 121282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy getAlphaAndMode(paint, &alpha, &mode); 121382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 12146820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy drawTextureMesh(left, top, right, bottom, texture->id, alpha / 255.0f, mode, 121503750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy texture->blend, (GLvoid*) NULL, (GLvoid*) gMeshTextureOffset, 12166820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GL_TRIANGLE_STRIP, gMeshCount); 121785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy} 121885bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 1219bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 1220a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend) { 1221a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, right, bottom, texture, alpha, mode, blend, 122203750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy (GLvoid*) NULL, (GLvoid*) gMeshTextureOffset, GL_TRIANGLE_STRIP, gMeshCount); 1223f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 1224f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 1225f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guyvoid OpenGLRenderer::drawTextureMesh(float left, float top, float right, float bottom, 1226a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend, 12276820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, 122803750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy bool swapSrcDst, bool ignoreTransform, GLuint vbo) { 12298694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 12308694230ff25fa0a60e480d424843e56b718f0516Romain Guy 1231889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 1232889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasTexture = true; 1233707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy const bool setColor = description.setColor(alpha, alpha, alpha, alpha); 1234db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1235db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 1236db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1237889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 1238bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.loadTranslate(left, top, 0.0f); 1239bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.scale(right - left, bottom - top, 1.0f); 1240bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1241f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy chooseBlending(blend || alpha < 1.0f, mode, description, swapSrcDst); 1242a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1243fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 1244f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (!ignoreTransform) { 1245f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1246f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } else { 1247f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mat4 m; 1248f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, m); 1249f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 1250bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1251889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Texture 125206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, 0); 1253fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), 0); 1254c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 1255a979474f15b454c8e2963f239a3770e200bb227cRomain Guy // Always premultiplied 1256707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy if (setColor) { 1257707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy mCaches.currentProgram->setColor(alpha, alpha, alpha, alpha); 1258707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy } 1259bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1260889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Mesh 1261fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 1262889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glEnableVertexAttribArray(texCoordsSlot); 126303750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy 126403750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy if (!vertices) { 126503750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.bindMeshBuffer(vbo == 0 ? mCaches.meshBuffer : vbo); 126603750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy } else { 126703750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.unbindMeshBuffer(); 126803750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy } 1269fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1270ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, vertices); 1271889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, gMeshStride, texCoords); 1272bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1273db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy // Color filter 1274db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1275fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1276db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1277db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 12786820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy glDrawArrays(drawMode, 0, elementsCount); 1279889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDisableVertexAttribArray(texCoordsSlot); 128082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy} 128182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1282a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guyvoid OpenGLRenderer::chooseBlending(bool blend, SkXfermode::Mode mode, 1283f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy ProgramDescription& description, bool swapSrcDst) { 128482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy blend = blend || mode != SkXfermode::kSrcOver_Mode; 128582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy if (blend) { 1286a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode < SkXfermode::kPlus_Mode) { 1287a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mCaches.blend) { 1288a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glEnable(GL_BLEND); 1289a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 129082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1291f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum sourceMode = swapSrcDst ? gBlendsSwap[mode].src : gBlends[mode].src; 1292f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum destMode = swapSrcDst ? gBlendsSwap[mode].dst : gBlends[mode].dst; 129382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1294a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (sourceMode != mCaches.lastSrcMode || destMode != mCaches.lastDstMode) { 1295a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glBlendFunc(sourceMode, destMode); 1296a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastSrcMode = sourceMode; 1297a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastDstMode = destMode; 1298a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1299a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1300a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // These blend modes are not supported by OpenGL directly and have 1301a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // to be implemented using shaders. Since the shader will perform 1302a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // the blending, turn blending off here 1303a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mExtensions.hasFramebufferFetch()) { 1304a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy description.framebufferMode = mode; 1305f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy description.swapSrcDst = swapSrcDst; 1306a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1307a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1308a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mCaches.blend) { 1309a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glDisable(GL_BLEND); 1310a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1311a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy blend = false; 131282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1313fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy } else if (mCaches.blend) { 131482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy glDisable(GL_BLEND); 131582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1316fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.blend = blend; 1317bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 1318bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1319889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guybool OpenGLRenderer::useProgram(Program* program) { 1320d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (!program->isInUse()) { 1321fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (mCaches.currentProgram != NULL) mCaches.currentProgram->remove(); 1322d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy program->use(); 1323fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram = program; 13246926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return false; 1325260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy } 13266926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return true; 1327260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy} 1328260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy 1329026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) { 1330ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy TextureVertex* v = &mMeshVertices[0]; 133182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v1); 133282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v1); 133382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v2); 133482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v2); 13358ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 13368ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 13378ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) { 13388ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (paint) { 1339a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 1340a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(paint->getXfermode(), mode); 1341a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 1342a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 1343a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = SkXfermode::kSrcOver_Mode; 1344a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1345a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1346a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = getXfermode(paint->getXfermode()); 13478ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 13488ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 13498ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Skia draws using the color's alpha channel if < 255 13508ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Otherwise, it uses the paint's alpha 13518ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy int color = paint->getColor(); 13528ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = (color >> 24) & 0xFF; 13538ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (*alpha == 255) { 13548ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = paint->getAlpha(); 13558ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 13568ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } else { 13578ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *mode = SkXfermode::kSrcOver_Mode; 13588ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = 255; 13598ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 1360026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy} 1361026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 1362a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain GuySkXfermode::Mode OpenGLRenderer::getXfermode(SkXfermode* mode) { 1363a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode == NULL) { 1364a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return SkXfermode::kSrcOver_Mode; 1365a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1366a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return mode->fMode; 1367a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy} 1368a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1369889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guyvoid OpenGLRenderer::bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT, GLuint textureUnit) { 1370889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glActiveTexture(gTextureUnits[textureUnit]); 1371ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 1372a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrapS); 1373a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrapT); 1374a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy} 1375a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy 13769d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 1377e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy}; // namespace android 1378