OpenGLRenderer.cpp revision ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefc
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, 2555c13d89c1332fcc499379b9064b891187b75ca32Chet Haase 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); 356ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy if (fboLayer) { 357ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy // Clear the previous layer regions before we change the viewport 358ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy clearLayerRegions(); 359ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy } else { 360eb99356a0548684a501766e6a524529ab93304c8Romain Guy mSnapshot->transform->mapRect(bounds); 361ae517591d96be39f5f18a1716c856ade13a8bcc7Romain Guy 362eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Layers only make sense if they are in the framebuffer's bounds 36358ae6db4ff8a9d0910e1183ee8be9a038a2712a6Romain Guy bounds.intersect(*snapshot->clipRect); 364ae517591d96be39f5f18a1716c856ade13a8bcc7Romain Guy 365ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy // We cannot work with sub-pixels in this case 366ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy bounds.snapToPixelBoundaries(); 367ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy 368ae517591d96be39f5f18a1716c856ade13a8bcc7Romain Guy // When the layer is not an FBO, we may use glCopyTexImage so we 369ae517591d96be39f5f18a1716c856ade13a8bcc7Romain Guy // need to make sure the layer does not extend outside the bounds 370ae517591d96be39f5f18a1716c856ade13a8bcc7Romain Guy // of the framebuffer 371ae517591d96be39f5f18a1716c856ade13a8bcc7Romain Guy bounds.intersect(snapshot->previous->viewport); 372eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 373bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy 374b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy if (bounds.isEmpty() || bounds.getWidth() > mMaxTextureSize || 375b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy bounds.getHeight() > mMaxTextureSize) { 376dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy snapshot->invisible = true; 377dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy } else { 378dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy // TODO: Should take the mode into account 379d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy snapshot->invisible = snapshot->previous->invisible || 380d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy (alpha <= ALPHA_THRESHOLD && fboLayer); 381dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy } 382dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 383dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy // Bail out if we won't draw in this snapshot 384dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (snapshot->invisible) { 385b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy return false; 386b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 387dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3880bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy glActiveTexture(GL_TEXTURE0); 3890bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy 3908550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy Layer* layer = mCaches.layerCache.get(bounds.getWidth(), bounds.getHeight()); 391f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy if (!layer) { 392f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy return false; 393bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 394bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 395dda570201ac851dd85af3861f7e575721d3345daRomain Guy layer->mode = mode; 396f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy layer->alpha = alpha; 3978aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy layer->layer.set(bounds); 3988550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy layer->texCoords.set(0.0f, bounds.getHeight() / float(layer->height), 3998550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy bounds.getWidth() / float(layer->width), 0.0f); 400dda570201ac851dd85af3861f7e575721d3345daRomain Guy 4018fb954263dd2f918ad339045cc6d82e346515599Romain Guy // Save the layer in the snapshot 4028fb954263dd2f918ad339045cc6d82e346515599Romain Guy snapshot->flags |= Snapshot::kFlagIsLayer; 403dda570201ac851dd85af3861f7e575721d3345daRomain Guy snapshot->layer = layer; 4041d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 405eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (fboLayer) { 406eb99356a0548684a501766e6a524529ab93304c8Romain Guy layer->fbo = mCaches.fboCache.get(); 40738c85b907a478af96d71b9a5df5a2066b8475311Romain Guy 408eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->flags |= Snapshot::kFlagIsFboLayer; 409eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->fbo = layer->fbo; 410eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->resetTransform(-bounds.left, -bounds.top, 0.0f); 411eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->resetClip(0.0f, 0.0f, bounds.getWidth(), bounds.getHeight()); 412eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->viewport.set(0.0f, 0.0f, bounds.getWidth(), bounds.getHeight()); 413eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->height = bounds.getHeight(); 414eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->flags |= Snapshot::kFlagDirtyOrtho; 415eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->orthoMatrix.load(mOrthoMatrix); 4160bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy 417eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Bind texture to FBO 418eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, layer->fbo); 419eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindTexture(GL_TEXTURE_2D, layer->texture); 420eb99356a0548684a501766e6a524529ab93304c8Romain Guy 421eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Initialize the texture if needed 422eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (layer->empty) { 423eb99356a0548684a501766e6a524529ab93304c8Romain Guy layer->empty = false; 4248550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, layer->width, layer->height, 0, 425eb99356a0548684a501766e6a524529ab93304c8Romain Guy GL_RGBA, GL_UNSIGNED_BYTE, NULL); 426eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 427eb99356a0548684a501766e6a524529ab93304c8Romain Guy 428eb99356a0548684a501766e6a524529ab93304c8Romain Guy glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 429eb99356a0548684a501766e6a524529ab93304c8Romain Guy layer->texture, 0); 430eb99356a0548684a501766e6a524529ab93304c8Romain Guy 431e91080581f467d55913a8c5ab53dedc2dab2e5b6Romain Guy#if DEBUG_LAYERS 432eb99356a0548684a501766e6a524529ab93304c8Romain Guy GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); 433eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (status != GL_FRAMEBUFFER_COMPLETE) { 434eb99356a0548684a501766e6a524529ab93304c8Romain Guy LOGE("Framebuffer incomplete (GL error code 0x%x)", status); 435eb99356a0548684a501766e6a524529ab93304c8Romain Guy 436eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previousFbo); 437eb99356a0548684a501766e6a524529ab93304c8Romain Guy glDeleteTextures(1, &layer->texture); 438eb99356a0548684a501766e6a524529ab93304c8Romain Guy mCaches.fboCache.put(layer->fbo); 439eb99356a0548684a501766e6a524529ab93304c8Romain Guy 440eb99356a0548684a501766e6a524529ab93304c8Romain Guy delete layer; 441eb99356a0548684a501766e6a524529ab93304c8Romain Guy 442eb99356a0548684a501766e6a524529ab93304c8Romain Guy return false; 443eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 444e91080581f467d55913a8c5ab53dedc2dab2e5b6Romain Guy#endif 445eb99356a0548684a501766e6a524529ab93304c8Romain Guy 446eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Clear the FBO 44793d2361c6d294c390cb5c4a13bd1b88dcd465fd7Romain Guy glScissor(0.0f, 0.0f, bounds.getWidth() + 1.0f, bounds.getHeight() + 1.0f); 448eb99356a0548684a501766e6a524529ab93304c8Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 449eb99356a0548684a501766e6a524529ab93304c8Romain Guy glClear(GL_COLOR_BUFFER_BIT); 450eb07af687319a0f52c219c3c0c1b73162fce9d04Romain Guy 451eb07af687319a0f52c219c3c0c1b73162fce9d04Romain Guy setScissorFromClip(); 452eb99356a0548684a501766e6a524529ab93304c8Romain Guy 453eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Change the ortho projection 454eb99356a0548684a501766e6a524529ab93304c8Romain Guy glViewport(0, 0, bounds.getWidth(), bounds.getHeight()); 455eb99356a0548684a501766e6a524529ab93304c8Romain Guy mOrthoMatrix.loadOrtho(0.0f, bounds.getWidth(), bounds.getHeight(), 0.0f, -1.0f, 1.0f); 456eb99356a0548684a501766e6a524529ab93304c8Romain Guy } else { 457eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Copy the framebuffer into the layer 458eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindTexture(GL_TEXTURE_2D, layer->texture); 459eb99356a0548684a501766e6a524529ab93304c8Romain Guy 460ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy if (layer->empty) { 461ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bounds.left, 462ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy snapshot->height - bounds.bottom, layer->width, layer->height, 0); 463ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy layer->empty = false; 464ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy } else { 465ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bounds.left, 466ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy snapshot->height - bounds.bottom, bounds.getWidth(), bounds.getHeight()); 467ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy } 468eb99356a0548684a501766e6a524529ab93304c8Romain Guy 469eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Enqueue the buffer coordinates to clear the corresponding region later 470eb99356a0548684a501766e6a524529ab93304c8Romain Guy mLayers.push(new Rect(bounds)); 471eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 472f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 473d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return true; 474bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 475bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 4761c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 4771c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Read the documentation of createLayer() before doing anything in this method. 4781c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 4791d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guyvoid OpenGLRenderer::composeLayer(sp<Snapshot> current, sp<Snapshot> previous) { 4801d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy if (!current->layer) { 4811d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LOGE("Attempting to compose a layer that does not exist"); 4821d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy return; 4831d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 4841d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 485eb99356a0548684a501766e6a524529ab93304c8Romain Guy const bool fboLayer = current->flags & SkCanvas::kClipToLayer_SaveFlag; 486eb99356a0548684a501766e6a524529ab93304c8Romain Guy 487eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (fboLayer) { 488eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Unbind current FBO and restore previous one 489eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previous->fbo); 490eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 491eb99356a0548684a501766e6a524529ab93304c8Romain Guy 4921d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Restore the clip from the previous snapshot 493ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy Rect& clip(*previous->clipRect); 494ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy clip.snapToPixelBoundaries(); 495eb99356a0548684a501766e6a524529ab93304c8Romain Guy glScissor(clip.left, previous->height - clip.bottom, clip.getWidth(), clip.getHeight()); 4961d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4971d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Layer* layer = current->layer; 4981d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy const Rect& rect = layer->layer; 4991d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 500eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (!fboLayer && layer->alpha < 255) { 501f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawColorRect(rect.left, rect.top, rect.right, rect.bottom, 5021c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy layer->alpha << 24, SkXfermode::kDstIn_Mode, true); 503f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 504f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 5058550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy const Rect& texCoords = layer->texCoords; 50603750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.unbindMeshBuffer(); 5078550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy resetDrawTextureTexCoords(texCoords.left, texCoords.top, texCoords.right, texCoords.bottom); 5088b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 509eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (fboLayer) { 51003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy drawTextureMesh(rect.left, rect.top, rect.right, rect.bottom, layer->texture, 51103750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy layer->alpha / 255.0f, layer->mode, layer->blend, &mMeshVertices[0].position[0], 51203750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy &mMeshVertices[0].texture[0], GL_TRIANGLE_STRIP, gMeshCount); 513eb99356a0548684a501766e6a524529ab93304c8Romain Guy } else { 514eb99356a0548684a501766e6a524529ab93304c8Romain Guy drawTextureMesh(rect.left, rect.top, rect.right, rect.bottom, layer->texture, 515eb99356a0548684a501766e6a524529ab93304c8Romain Guy 1.0f, layer->mode, layer->blend, &mMeshVertices[0].position[0], 516eb99356a0548684a501766e6a524529ab93304c8Romain Guy &mMeshVertices[0].texture[0], GL_TRIANGLE_STRIP, gMeshCount, true, true); 517eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 5181d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 5198b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 5208b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 521eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (fboLayer) { 522eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Detach the texture from the FBO 523eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, current->fbo); 524eb99356a0548684a501766e6a524529ab93304c8Romain Guy glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0); 525eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previous->fbo); 526eb99356a0548684a501766e6a524529ab93304c8Romain Guy 527eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Put the FBO name back in the cache, if it doesn't fit, it will be destroyed 528eb99356a0548684a501766e6a524529ab93304c8Romain Guy mCaches.fboCache.put(current->fbo); 529eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 530eb99356a0548684a501766e6a524529ab93304c8Romain Guy 531eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Failing to add the layer to the cache should happen only if the layer is too large 5328550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy if (!mCaches.layerCache.put(layer)) { 5331d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LAYER_LOGD("Deleting layer"); 5341d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy glDeleteTextures(1, &layer->texture); 5351d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy delete layer; 5361d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 5371d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy} 5381d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 5398694230ff25fa0a60e480d424843e56b718f0516Romain Guyvoid OpenGLRenderer::clearLayerRegions() { 540dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mLayers.size() == 0 || mSnapshot->invisible) return; 5418694230ff25fa0a60e480d424843e56b718f0516Romain Guy 5428694230ff25fa0a60e480d424843e56b718f0516Romain Guy for (uint32_t i = 0; i < mLayers.size(); i++) { 5438694230ff25fa0a60e480d424843e56b718f0516Romain Guy Rect* bounds = mLayers.itemAt(i); 5448694230ff25fa0a60e480d424843e56b718f0516Romain Guy 5458694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Clear the framebuffer where the layer will draw 546d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy glScissor(bounds->left, mSnapshot->height - bounds->bottom, 5478694230ff25fa0a60e480d424843e56b718f0516Romain Guy bounds->getWidth(), bounds->getHeight()); 5488694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 5498694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClear(GL_COLOR_BUFFER_BIT); 5508694230ff25fa0a60e480d424843e56b718f0516Romain Guy 5518694230ff25fa0a60e480d424843e56b718f0516Romain Guy delete bounds; 5528694230ff25fa0a60e480d424843e56b718f0516Romain Guy } 5538694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.clear(); 5548694230ff25fa0a60e480d424843e56b718f0516Romain Guy 5558694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Restore the clip 5568694230ff25fa0a60e480d424843e56b718f0516Romain Guy setScissorFromClip(); 5578694230ff25fa0a60e480d424843e56b718f0516Romain Guy} 5588694230ff25fa0a60e480d424843e56b718f0516Romain Guy 559bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 560f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Transforms 561f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 562f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 563f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::translate(float dx, float dy) { 5648aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->translate(dx, dy, 0.0f); 565f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 566f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 567f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::rotate(float degrees) { 5688aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->rotate(degrees, 0.0f, 0.0f, 1.0f); 569f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 570f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 571f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::scale(float sx, float sy) { 5728aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->scale(sx, sy, 1.0f); 573f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 574f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 575f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::setMatrix(SkMatrix* matrix) { 5768aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->load(*matrix); 577f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 578f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 57941030da16856c8869e1e51d4a0405432fa96614eRomain Guyconst float* OpenGLRenderer::getMatrix() const { 58099bcdc52dcb365ed7d8cfa13540fb33fbcbbac9dRomain Guy if (mSnapshot->fbo != 0) { 58199bcdc52dcb365ed7d8cfa13540fb33fbcbbac9dRomain Guy return &mSnapshot->transform->data[0]; 58299bcdc52dcb365ed7d8cfa13540fb33fbcbbac9dRomain Guy } 58399bcdc52dcb365ed7d8cfa13540fb33fbcbbac9dRomain Guy return &mIdentity.data[0]; 58441030da16856c8869e1e51d4a0405432fa96614eRomain Guy} 58541030da16856c8869e1e51d4a0405432fa96614eRomain Guy 586f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::getMatrix(SkMatrix* matrix) { 5878aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->copyTo(*matrix); 588f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 589f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 590f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::concatMatrix(SkMatrix* matrix) { 591e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy SkMatrix transform; 592e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy mSnapshot->transform->copyTo(transform); 593e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy transform.preConcat(*matrix); 594e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy mSnapshot->transform->load(transform); 595f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 596f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 597f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 598f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Clipping 599f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 600f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 601bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::setScissorFromClip() { 602e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy Rect clip(*mSnapshot->clipRect); 603e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy clip.snapToPixelBoundaries(); 604eb99356a0548684a501766e6a524529ab93304c8Romain Guy glScissor(clip.left, mSnapshot->height - clip.bottom, clip.getWidth(), clip.getHeight()); 6059d5316e3f56d138504565ff311145ac01621dff4Romain Guy} 6069d5316e3f56d138504565ff311145ac01621dff4Romain Guy 6079d5316e3f56d138504565ff311145ac01621dff4Romain Guyconst Rect& OpenGLRenderer::getClipBounds() { 608079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return mSnapshot->getLocalClip(); 609bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 610bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 611c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guybool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) { 612dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mSnapshot->invisible) { 613dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy return true; 614dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy } 615dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 6161d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Rect r(left, top, right, bottom); 6178aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->mapRect(r); 618d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy r.snapToPixelBoundaries(); 619d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy 620d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy Rect clipRect(*mSnapshot->clipRect); 621d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy clipRect.snapToPixelBoundaries(); 622d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy 623d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy return !clipRect.intersects(r); 624c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 625c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy 626079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guybool OpenGLRenderer::clipRect(float left, float top, float right, float bottom, SkRegion::Op op) { 627079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bool clipped = mSnapshot->clip(left, top, right, bottom, op); 6287ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (clipped) { 6297ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 6307ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 6318aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->isEmpty(); 632e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 633e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 634f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 635f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Drawing 636f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 637f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 6385c13d89c1332fcc499379b9064b891187b75ca32Chet Haasevoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, float left, float top, SkPaint* paint) { 6396926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float right = left + bitmap->width(); 6406926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float bottom = top + bitmap->height(); 6416926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 6426926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 6436926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6446926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6456926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 64661c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 647fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 6489cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 64922158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 65022158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 6516926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy drawTextureRect(left, top, right, bottom, texture, paint); 6528ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 6538ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 6545c13d89c1332fcc499379b9064b891187b75ca32Chet Haasevoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, SkMatrix* matrix, SkPaint* paint) { 655f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy Rect r(0.0f, 0.0f, bitmap->width(), bitmap->height()); 656f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const mat4 transform(*matrix); 657f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy transform.mapRect(r); 658f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 6596926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(r.left, r.top, r.right, r.bottom)) { 6606926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6616926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6626926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 66361c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 664fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 6659cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 66622158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 66722158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 66882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(r.left, r.top, r.right, r.bottom, texture, paint); 669f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy} 670f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 6718ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, 6728ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float srcLeft, float srcTop, float srcRight, float srcBottom, 6738ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float dstLeft, float dstTop, float dstRight, float dstBottom, 6745c13d89c1332fcc499379b9064b891187b75ca32Chet Haase SkPaint* paint) { 6756926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(dstLeft, dstTop, dstRight, dstBottom)) { 6766926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6776926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6786926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 67961c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 680fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 6819cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 68222158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 6838ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 6848ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float width = texture->width; 6858ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float height = texture->height; 686c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 6878ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u1 = srcLeft / width; 6888ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v1 = srcTop / height; 6898ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u2 = srcRight / width; 6908ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v2 = srcBottom / height; 691c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 69203750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.unbindMeshBuffer(); 6938ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(u1, v1, u2, v2); 6948ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 69503750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy int alpha; 69603750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy SkXfermode::Mode mode; 69703750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy getAlphaAndMode(paint, &alpha, &mode); 69803750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy 69903750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy drawTextureMesh(dstLeft, dstTop, dstRight, dstBottom, texture->id, alpha / 255.0f, 70003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mode, texture->blend, &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], 70103750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy GL_TRIANGLE_STRIP, gMeshCount); 7028ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 7038ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 704ce0537b80087a6225273040a987414b1dd081aa0Romain Guy} 705ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 7064aa90573bbf86db0d33a3a790c5dbd0d93b95cfeRomain Guyvoid OpenGLRenderer::drawPatch(SkBitmap* bitmap, const int32_t* xDivs, const int32_t* yDivs, 7074bb942083a0d4db746adf95349108dd8ef842e32Romain Guy const uint32_t* colors, uint32_t width, uint32_t height, int8_t numColors, 7085c13d89c1332fcc499379b9064b891187b75ca32Chet Haase float left, float top, float right, float bottom, SkPaint* paint) { 7096926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 7106926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 7116926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 7126926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 71361c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 714fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 7159cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 71622158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 717f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 718f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy int alpha; 719f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy SkXfermode::Mode mode; 720f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy getAlphaAndMode(paint, &alpha, &mode); 721f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 7222728f961614a385df1f056fc24803a9f65c90fabRomain Guy const Patch* mesh = mCaches.patchCache.get(bitmap->width(), bitmap->height(), 7234bb942083a0d4db746adf95349108dd8ef842e32Romain Guy right - left, bottom - top, xDivs, yDivs, colors, width, height, numColors); 724f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 725054dc1840941665e32036f9523df51720ad069c8Romain Guy if (mesh) { 726054dc1840941665e32036f9523df51720ad069c8Romain Guy // Specify right and bottom as +1.0f from left/top to prevent scaling since the 727054dc1840941665e32036f9523df51720ad069c8Romain Guy // patch mesh already defines the final size 728054dc1840941665e32036f9523df51720ad069c8Romain Guy drawTextureMesh(left, top, left + 1.0f, top + 1.0f, texture->id, alpha / 255.0f, 72903750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mode, texture->blend, (GLvoid*) 0, (GLvoid*) gMeshTextureOffset, 73003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy GL_TRIANGLES, mesh->verticesCount, false, false, mesh->meshBuffer); 731054dc1840941665e32036f9523df51720ad069c8Romain Guy } 732f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 733f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 7345c13d89c1332fcc499379b9064b891187b75ca32Chet Haasevoid OpenGLRenderer::drawLines(float* points, int count, SkPaint* paint) { 735dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mSnapshot->invisible) return; 736dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 737759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy int alpha; 738759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy SkXfermode::Mode mode; 739759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy getAlphaAndMode(paint, &alpha, &mode); 740759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 741759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy uint32_t color = paint->getColor(); 742759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat a = alpha / 255.0f; 743759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 744759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 745759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 746759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 747c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const bool isAA = paint->isAntiAlias(); 748c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (isAA) { 749c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy GLuint textureUnit = 0; 75029d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy setupTextureAlpha8(mCaches.line.getTexture(), 0, 0, textureUnit, 0.0f, 0.0f, r, g, b, a, 75103750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mode, false, true, (GLvoid*) 0, (GLvoid*) gMeshTextureOffset, 75203750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.line.getMeshBuffer()); 753c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } else { 754c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy setupColorRect(0.0f, 0.0f, 1.0f, 1.0f, r, g, b, a, mode, false); 755c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 756c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 757c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const float strokeWidth = paint->getStrokeWidth(); 75829d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy const GLsizei elementsCount = isAA ? mCaches.line.getElementsCount() : gMeshCount; 759c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const GLenum drawMode = isAA ? GL_TRIANGLES : GL_TRIANGLE_STRIP; 760759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 761759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy for (int i = 0; i < count; i += 4) { 762759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy float tx = 0.0f; 763759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy float ty = 0.0f; 764759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 765c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (isAA) { 76629d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy mCaches.line.update(points[i], points[i + 1], points[i + 2], points[i + 3], 767c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy strokeWidth, tx, ty); 768c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } else { 769b5ab4173e0927e4668a45298c9900cd8007584e1Romain Guy ty = strokeWidth <= 1.0f ? 0.0f : -strokeWidth * 0.5f; 770c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 771759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 772759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float dx = points[i + 2] - points[i]; 773759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float dy = points[i + 3] - points[i + 1]; 774759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float mag = sqrtf(dx * dx + dy * dy); 775759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float angle = acos(dx / mag); 776759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 777759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.loadTranslate(points[i], points[i + 1], 0.0f); 778759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy if (angle > MIN_ANGLE || angle < -MIN_ANGLE) { 779759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.rotate(angle * RAD_TO_DEG, 0.0f, 0.0f, 1.0f); 780759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 781759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.translate(tx, ty, 0.0f); 782c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (!isAA) { 78329d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy float length = mCaches.line.getLength(points[i], points[i + 1], 78429d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy points[i + 2], points[i + 3]); 785c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy mModelView.scale(length, strokeWidth, 1.0f); 786c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 787759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 788759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 789759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy if (mShader) { 790759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mShader->updateTransforms(mCaches.currentProgram, mModelView, *mSnapshot); 791759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 792759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 793c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy glDrawArrays(drawMode, 0, elementsCount); 794759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 795759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 79629d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy if (isAA) { 79729d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 79829d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy } 799759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy} 800759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 80185bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) { 802ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy Rect& clip(*mSnapshot->clipRect); 803ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy clip.snapToPixelBoundaries(); 8043d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode, true); 805c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 8069d5316e3f56d138504565ff311145ac01621dff4Romain Guy 8075c13d89c1332fcc499379b9064b891187b75ca32Chet Haasevoid OpenGLRenderer::drawRect(float left, float top, float right, float bottom, SkPaint* p) { 8086926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 8096926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 8106926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 8116926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 812026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy SkXfermode::Mode mode; 813a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 814a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 815a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 816a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 817a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 818a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 819a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 820a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 821026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 822026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 823026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Skia draws using the color's alpha channel if < 255 824026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Otherwise, it uses the paint's alpha 825026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color = p->getColor(); 826d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (((color >> 24) & 0xff) == 255) { 827026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy color |= p->getAlpha() << 24; 828026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 829026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 830026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(left, top, right, bottom, color, mode); 831c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 8329d5316e3f56d138504565ff311145ac01621dff4Romain Guy 833e8e62a4a032a80409114a37908b5f18ab0080848Romain Guyvoid OpenGLRenderer::drawText(const char* text, int bytesCount, int count, 834e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy float x, float y, SkPaint* paint) { 835f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (text == NULL || count == 0 || (paint->getAlpha() == 0 && paint->getXfermode() == NULL)) { 836e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy return; 837e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 838dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mSnapshot->invisible) return; 839e2d345ea67e2960b37bfdc0fc8626d1bfa747404Romain Guy 840f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy paint->setAntiAlias(true); 841e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 842a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy float length = -1.0f; 843e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy switch (paint->getTextAlign()) { 844e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kCenter_Align: 845e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 846e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length / 2.0f; 847e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 848e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kRight_Align: 849e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 850e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length; 851e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 852e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy default: 853e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 854e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 855e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 856694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy int alpha; 857694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy SkXfermode::Mode mode; 858694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy getAlphaAndMode(paint, &alpha, &mode); 859694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 8602542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy uint32_t color = paint->getColor(); 8612542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = alpha / 255.0f; 8622542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 8632542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 8642542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 8652542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 866b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy FontRenderer& fontRenderer = mCaches.fontRenderer.getFontRenderer(paint); 867b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.setFont(paint, SkTypeface::UniqueID(paint->getTypeface()), 868fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy paint->getTextSize()); 869e2d345ea67e2960b37bfdc0fc8626d1bfa747404Romain Guy 8709d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy Rect clipRect(*mSnapshot->clipRect); 871ae88e5e8e9cb6c9539314c4360c5b20f8ec1fefcRomain Guy clipRect.snapToPixelBoundaries(); 8729d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy glScissor(clipRect.left, mSnapshot->height - clipRect.bottom, 8739d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy clipRect.getWidth(), clipRect.getHeight()); 8749d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy 8751e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy if (mHasShadow) { 8761e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy glActiveTexture(gTextureUnits[0]); 877b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy mCaches.dropShadowCache.setFontRenderer(fontRenderer); 878fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const ShadowTexture* shadow = mCaches.dropShadowCache.get(paint, text, bytesCount, 8791e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy count, mShadowRadius); 8801e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy const AutoTexture autoCleanup(shadow); 8810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8822542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setupShadow(shadow, x, y, mode, a); 8830a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 8850a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 886fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 8871e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy } 8881e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 88906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 890db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 89106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 892e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy // Assume that the modelView matrix does not force scales, rotates, etc. 893e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy const bool linearFilter = mSnapshot->transform->changesBounds(); 894e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy setupTextureAlpha8(fontRenderer.getTexture(linearFilter), 0, 0, textureUnit, 89503750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy x, y, r, g, b, a, mode, false, true, NULL, NULL); 89606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 89709147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy const Rect& clip = mSnapshot->getLocalClip(); 8988694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 8999d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy 90003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.unbindMeshBuffer(); 901b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.renderText(paint, &clip, text, 0, bytesCount, count, x, y); 902694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 903694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); 904fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 905a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy 9060a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawTextDecorations(text, bytesCount, length, x, y, paint); 9079d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy 9089d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy setScissorFromClip(); 909694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy} 910694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 9117fbcc0492fca03857e3c45064f4aa040af817d55Romain Guyvoid OpenGLRenderer::drawPath(SkPath* path, SkPaint* paint) { 912dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mSnapshot->invisible) return; 913dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 9147fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy GLuint textureUnit = 0; 9157fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 9167fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 917fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const PathTexture* texture = mCaches.pathCache.get(path, paint); 9189cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 91922158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 9207fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 9218b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float x = texture->left - texture->offset; 9228b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float y = texture->top - texture->offset; 9238b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 9248b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy if (quickReject(x, y, x + texture->width, y + texture->height)) { 9258b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy return; 9268b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 9278b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 9287fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy int alpha; 9297fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy SkXfermode::Mode mode; 9307fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy getAlphaAndMode(paint, &alpha, &mode); 9317fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 9327fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy uint32_t color = paint->getColor(); 9337fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat a = alpha / 255.0f; 9347fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 9357fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 9367fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 9377fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 9380a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, x, y, r, g, b, a, mode, true, true); 9390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9408694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 9418694230ff25fa0a60e480d424843e56b718f0516Romain Guy 9420a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 9430a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 944fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 9457fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy} 9467fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 9476926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 948d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy// Shaders 949d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 950d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 951d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guyvoid OpenGLRenderer::resetShader() { 95206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 95306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy} 95406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 95506f96e2652e4855b6520ad9dd70583677605b79aRomain Guyvoid OpenGLRenderer::setupShader(SkiaShader* shader) { 95606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = shader; 95706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 958fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->set(&mCaches.textureCache, &mCaches.gradientCache); 95906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy } 9607fac2e18339f765320d759e8d4c090f92431959eRomain Guy} 9617fac2e18339f765320d759e8d4c090f92431959eRomain Guy 962d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 963db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy// Color filters 964db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 965db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 966db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::resetColorFilter() { 967db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 968db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 969db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 970db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::setupColorFilter(SkiaColorFilter* filter) { 971db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = filter; 972db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 973db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 974db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 9751e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy// Drop shadow 9761e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 9771e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 9781e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::resetShadow() { 9791e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 9801e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 9811e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 9821e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::setupShadow(float radius, float dx, float dy, int color) { 9831e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = true; 9841e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowRadius = radius; 9851e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDx = dx; 9861e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDy = dy; 9871e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowColor = color; 9881e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 9891e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 9901e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 9916926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy// Drawing implementation 9926926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 9936926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 9940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupShadow(const ShadowTexture* texture, float x, float y, 9952542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy SkXfermode::Mode mode, float alpha) { 9960a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sx = x - texture->left + mShadowDx; 9970a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sy = y - texture->top + mShadowDy; 9980a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9992542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const int shadowAlpha = ((mShadowColor >> 24) & 0xFF); 10002542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = shadowAlpha < 255 ? shadowAlpha / 255.0f : alpha; 10010a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat r = a * ((mShadowColor >> 16) & 0xFF) / 255.0f; 10020a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat g = a * ((mShadowColor >> 8) & 0xFF) / 255.0f; 10030a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat b = a * ((mShadowColor ) & 0xFF) / 255.0f; 10040a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10050a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint textureUnit = 0; 10060a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, sx, sy, r, g, b, a, mode, true, false); 10070a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 10080a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10090a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(const Texture* texture, GLuint& textureUnit, 10100a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, float r, float g, float b, float a, SkXfermode::Mode mode, 10110a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bool transforms, bool applyFilters) { 10120a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture->id, texture->width, texture->height, textureUnit, 1013759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy x, y, r, g, b, a, mode, transforms, applyFilters, 101403750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy (GLvoid*) 0, (GLvoid*) gMeshTextureOffset); 10150a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 10160a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10170a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 10180a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 10190a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters) { 102003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy setupTextureAlpha8(texture, width, height, textureUnit, x, y, r, g, b, a, mode, 102103750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy transforms, applyFilters, (GLvoid*) 0, (GLvoid*) gMeshTextureOffset); 1022759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy} 1023759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 1024759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 1025759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 1026759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters, 102703750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy GLvoid* vertices, GLvoid* texCoords, GLuint vbo) { 10280a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Describe the required shaders 10290a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy ProgramDescription description; 10300a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasTexture = true; 10310a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasAlpha8Texture = true; 1032707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy const bool setColor = description.setAlpha8Color(r, g, b, a); 10330a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10340a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 10350a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 10360a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mShader->describe(description, mExtensions); 10370a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10380a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 10390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mColorFilter->describe(description, mExtensions); 10400a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10410a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10420a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1043a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Setup the blending mode 1044a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy chooseBlending(true, mode, description); 1045a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 10460a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Build and use the appropriate shader 1047fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 10480a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10490a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, textureUnit); 1050fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), textureUnit); 10510a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1052fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 10530a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glEnableVertexAttribArray(texCoordsSlot); 10540a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 105503750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy if (texCoords) { 105603750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy // Setup attributes 105703750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy if (!vertices) { 105803750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.bindMeshBuffer(vbo == 0 ? mCaches.meshBuffer : vbo); 105903750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy } else { 106003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.unbindMeshBuffer(); 106103750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy } 106203750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 106303750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy gMeshStride, vertices); 106403750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, gMeshStride, texCoords); 106503750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy } 10660a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10670a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup uniforms 10680a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (transforms) { 10690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadTranslate(x, y, 0.0f); 10700a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.scale(width, height, 1.0f); 10710a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } else { 10720a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadIdentity(); 10730a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10748aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1075707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy if (setColor) { 1076707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy mCaches.currentProgram->setColor(r, g, b, a); 1077707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy } 10780a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10790a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy textureUnit++; 10800a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 10810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes and uniforms required by the shaders 10820a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 1083fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 10840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10850a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 1086fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 10870a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10880a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10890a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 10900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1091f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy// Same values used by Skia 10920a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdStrikeThru_Offset (-6.0f / 21.0f) 10930a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Offset (1.0f / 9.0f) 10940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Thickness (1.0f / 18.0f) 10950a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10960a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::drawTextDecorations(const char* text, int bytesCount, float length, 10970a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, SkPaint* paint) { 10980a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Handle underline and strike-through 10990a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy uint32_t flags = paint->getFlags(); 11000a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) { 11010a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float underlineWidth = length; 11020a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // If length is > 0.0f, we already measured the text for the text alignment 11030a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (length <= 0.0f) { 11040a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy underlineWidth = paint->measureText(text, bytesCount); 11050a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11060a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 11070a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float offsetX = 0; 11080a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy switch (paint->getTextAlign()) { 11090a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kCenter_Align: 11100a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth * 0.5f; 11110a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 11120a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kRight_Align: 11130a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth; 11140a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 11150a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy default: 11160a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 11170a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11180a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 11190a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (underlineWidth > 0.0f) { 1120e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const float textSize = paint->getTextSize(); 1121e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const float strokeWidth = textSize * kStdUnderline_Thickness; 11220a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1123e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const float left = x - offsetX; 11240a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float top = 0.0f; 1125e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy 1126e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const int pointsCount = 4 * (flags & SkPaint::kStrikeThruText_Flag ? 2 : 1); 1127e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy float points[pointsCount]; 1128e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy int currentPoint = 0; 11290a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 11300a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kUnderlineText_Flag) { 11310a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdUnderline_Offset; 1132e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left; 1133e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 1134e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left + underlineWidth; 1135e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 11360a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11370a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 11380a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kStrikeThruText_Flag) { 11390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdStrikeThru_Offset; 1140e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left; 1141e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 1142e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left + underlineWidth; 1143e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 11440a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 1145e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy 1146e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy SkPaint linesPaint(*paint); 1147e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy linesPaint.setStrokeWidth(strokeWidth); 1148e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy 1149e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy drawLines(&points[0], pointsCount, &linesPaint); 11500a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11510a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11520a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 11530a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1154026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, 11551c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy int color, SkXfermode::Mode mode, bool ignoreTransform) { 11568694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 11578694230ff25fa0a60e480d424843e56b718f0516Romain Guy 1158d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // If a shader is set, preserve only the alpha 115906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 1160d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy color |= 0x00ffffff; 1161d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 1162d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 1163d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // Render using pre-multiplied alpha 1164026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const int alpha = (color >> 24) & 0xFF; 1165d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy const GLfloat a = alpha / 255.0f; 1166c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 1167c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 1168c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 1169c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 1170c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy setupColorRect(left, top, right, bottom, r, g, b, a, mode, ignoreTransform); 1171c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 1172c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy // Draw the mesh 1173c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 1174c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy} 1175c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 1176c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guyvoid OpenGLRenderer::setupColorRect(float left, float top, float right, float bottom, 1177c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy float r, float g, float b, float a, SkXfermode::Mode mode, bool ignoreTransform) { 117806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 11799d5316e3f56d138504565ff311145ac01621dff4Romain Guy 118006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Describe the required shaders 1181889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 1182707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy const bool setColor = description.setColor(r, g, b, a); 1183707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy 118406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 118506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader->describe(description, mExtensions); 1186c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 1187db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1188db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 1189db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1190c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 11911c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy // Setup the blending mode 1192c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy chooseBlending(a < 1.0f || (mShader && mShader->blend()), mode, description); 1193a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 119406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Build and use the appropriate shader 1195fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 1196c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 119706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes 119803750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.bindMeshBuffer(); 1199fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 120003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy gMeshStride, 0); 1201c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 120206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup uniforms 1203889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.loadTranslate(left, top, 0.0f); 1204889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 120506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (!ignoreTransform) { 12068aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1207889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } else { 120806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mat4 identity; 1209fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, identity); 1210889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 1211707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy mCaches.currentProgram->setColor(r, g, b, a); 1212d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 121306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes and uniforms required by the shaders 121406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 1215fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 1216d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 1217db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1218fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1219db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1220d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy} 1221d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 122282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 12235c13d89c1332fcc499379b9064b891187b75ca32Chet Haase const Texture* texture, SkPaint* paint) { 122482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy int alpha; 122582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy SkXfermode::Mode mode; 122682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy getAlphaAndMode(paint, &alpha, &mode); 122782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 12286820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy drawTextureMesh(left, top, right, bottom, texture->id, alpha / 255.0f, mode, 122903750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy texture->blend, (GLvoid*) NULL, (GLvoid*) gMeshTextureOffset, 12306820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GL_TRIANGLE_STRIP, gMeshCount); 123185bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy} 123285bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 1233bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 1234a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend) { 1235a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, right, bottom, texture, alpha, mode, blend, 123603750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy (GLvoid*) NULL, (GLvoid*) gMeshTextureOffset, GL_TRIANGLE_STRIP, gMeshCount); 1237f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 1238f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 1239f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guyvoid OpenGLRenderer::drawTextureMesh(float left, float top, float right, float bottom, 1240a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend, 12416820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, 124203750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy bool swapSrcDst, bool ignoreTransform, GLuint vbo) { 12438694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 12448694230ff25fa0a60e480d424843e56b718f0516Romain Guy 1245889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 1246889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasTexture = true; 1247707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy const bool setColor = description.setColor(alpha, alpha, alpha, alpha); 1248db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1249db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 1250db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1251889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 1252bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.loadTranslate(left, top, 0.0f); 1253bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.scale(right - left, bottom - top, 1.0f); 1254bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1255f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy chooseBlending(blend || alpha < 1.0f, mode, description, swapSrcDst); 1256a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1257fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 1258f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (!ignoreTransform) { 1259f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1260f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } else { 1261f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mat4 m; 1262f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, m); 1263f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 1264bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1265889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Texture 126606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, 0); 1267fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), 0); 1268c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 1269a979474f15b454c8e2963f239a3770e200bb227cRomain Guy // Always premultiplied 1270707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy if (setColor) { 1271707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy mCaches.currentProgram->setColor(alpha, alpha, alpha, alpha); 1272707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy } 1273bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1274889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Mesh 1275fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 1276889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glEnableVertexAttribArray(texCoordsSlot); 127703750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy 127803750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy if (!vertices) { 127903750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.bindMeshBuffer(vbo == 0 ? mCaches.meshBuffer : vbo); 128003750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy } else { 128103750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy mCaches.unbindMeshBuffer(); 128203750a067e818ca7fbd0f590e2ff6a8fded21e6cRomain Guy } 1283fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1284ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, vertices); 1285889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, gMeshStride, texCoords); 1286bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1287db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy // Color filter 1288db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1289fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1290db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1291db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 12926820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy glDrawArrays(drawMode, 0, elementsCount); 1293889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDisableVertexAttribArray(texCoordsSlot); 129482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy} 129582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1296a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guyvoid OpenGLRenderer::chooseBlending(bool blend, SkXfermode::Mode mode, 1297f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy ProgramDescription& description, bool swapSrcDst) { 129882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy blend = blend || mode != SkXfermode::kSrcOver_Mode; 129982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy if (blend) { 1300a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode < SkXfermode::kPlus_Mode) { 1301a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mCaches.blend) { 1302a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glEnable(GL_BLEND); 1303a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 130482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1305f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum sourceMode = swapSrcDst ? gBlendsSwap[mode].src : gBlends[mode].src; 1306f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum destMode = swapSrcDst ? gBlendsSwap[mode].dst : gBlends[mode].dst; 130782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1308a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (sourceMode != mCaches.lastSrcMode || destMode != mCaches.lastDstMode) { 1309a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glBlendFunc(sourceMode, destMode); 1310a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastSrcMode = sourceMode; 1311a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastDstMode = destMode; 1312a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1313a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1314a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // These blend modes are not supported by OpenGL directly and have 1315a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // to be implemented using shaders. Since the shader will perform 1316a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // the blending, turn blending off here 1317a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mExtensions.hasFramebufferFetch()) { 1318a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy description.framebufferMode = mode; 1319f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy description.swapSrcDst = swapSrcDst; 1320a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1321a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1322a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mCaches.blend) { 1323a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glDisable(GL_BLEND); 1324a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1325a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy blend = false; 132682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1327fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy } else if (mCaches.blend) { 132882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy glDisable(GL_BLEND); 132982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1330fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.blend = blend; 1331bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 1332bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1333889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guybool OpenGLRenderer::useProgram(Program* program) { 1334d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (!program->isInUse()) { 1335fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (mCaches.currentProgram != NULL) mCaches.currentProgram->remove(); 1336d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy program->use(); 1337fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram = program; 13386926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return false; 1339260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy } 13406926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return true; 1341260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy} 1342260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy 1343026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) { 1344ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy TextureVertex* v = &mMeshVertices[0]; 134582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v1); 134682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v1); 134782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v2); 134882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v2); 13498ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 13508ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 13515c13d89c1332fcc499379b9064b891187b75ca32Chet Haasevoid OpenGLRenderer::getAlphaAndMode(SkPaint* paint, int* alpha, SkXfermode::Mode* mode) { 13528ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (paint) { 1353a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 1354a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(paint->getXfermode(), mode); 1355a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 1356a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 1357a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = SkXfermode::kSrcOver_Mode; 1358a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1359a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1360a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = getXfermode(paint->getXfermode()); 13618ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 13628ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 13638ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Skia draws using the color's alpha channel if < 255 13648ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Otherwise, it uses the paint's alpha 13658ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy int color = paint->getColor(); 13668ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = (color >> 24) & 0xFF; 13678ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (*alpha == 255) { 13688ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = paint->getAlpha(); 13698ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 13708ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } else { 13718ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *mode = SkXfermode::kSrcOver_Mode; 13728ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = 255; 13738ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 1374026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy} 1375026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 1376a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain GuySkXfermode::Mode OpenGLRenderer::getXfermode(SkXfermode* mode) { 1377a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode == NULL) { 1378a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return SkXfermode::kSrcOver_Mode; 1379a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1380a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return mode->fMode; 1381a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy} 1382a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1383889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guyvoid OpenGLRenderer::bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT, GLuint textureUnit) { 1384889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glActiveTexture(gTextureUnits[textureUnit]); 1385ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 1386a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrapS); 1387a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrapT); 1388a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy} 1389a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy 13909d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 1391e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy}; // namespace android 1392