OpenGLRenderer.cpp revision 9d13fe25f4f10b25776b1dc5c858f9ebb0b28b30
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 3806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy#define REQUIRED_TEXTURE_UNITS_COUNT 3 3906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 40dda570201ac851dd85af3861f7e575721d3345daRomain Guy// Generates simple and textured vertices 41bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#define FV(x, y, u, v) { { x, y }, { u, v } } 429d5316e3f56d138504565ff311145ac01621dff4Romain Guy 43759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy#define RAD_TO_DEG (180.0f / 3.14159265f) 44759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy#define MIN_ANGLE 0.001f 45759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 46dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy// TODO: This should be set in properties 47dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy#define ALPHA_THRESHOLD (0x7f / PANEL_BIT_DEPTH) 48dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 499d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 509d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Globals 519d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 529d5316e3f56d138504565ff311145ac01621dff4Romain Guy 53026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// This array is never used directly but used as a memcpy source in the 54026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// OpenGLRenderer constructor 55ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const TextureVertex gMeshVertices[] = { 56c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 0.0f, 0.0f, 0.0f), 57c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 0.0f, 1.0f, 0.0f), 58c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 1.0f, 0.0f, 1.0f), 59c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 1.0f, 1.0f, 1.0f) 60bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy}; 61ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshStride = sizeof(TextureVertex); 62ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshCount = 4; 63026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 64889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy/** 65889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy * Structure mapping Skia xfermodes to OpenGL blending factors. 66889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy */ 67889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystruct Blender { 68889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy SkXfermode::Mode mode; 69889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum src; 70889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum dst; 71889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy}; // struct Blender 72889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 73026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// In this array, the index of each Blender equals the value of the first 74026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// entry. For instance, gBlends[1] == gBlends[SkXfermode::kSrc_Mode] 75026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const Blender gBlends[] = { 76026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 77026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrc_Mode, GL_ONE, GL_ZERO }, 78026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDst_Mode, GL_ZERO, GL_ONE }, 79026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 80026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 81026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcIn_Mode, GL_DST_ALPHA, GL_ZERO }, 82026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 83026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 84026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 85026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 86026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 87026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 88026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy}; 89e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 9087a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// This array contains the swapped version of each SkXfermode. For instance 9187a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// this array's SrcOver blending mode is actually DstOver. You can refer to 9287a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// createLayer() for more information on the purpose of this array. 93f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guystatic const Blender gBlendsSwap[] = { 94f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 95f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrc_Mode, GL_ZERO, GL_ONE }, 96f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDst_Mode, GL_ONE, GL_ZERO }, 97f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 98f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 99f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 100f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstIn_Mode, GL_DST_ALPHA, GL_ZERO }, 101f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 102f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 103f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 104f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 105f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 106f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy}; 107f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 108889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystatic const GLenum gTextureUnits[] = { 10906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE0, 11006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE1, 11106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE2 112d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy}; 113d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 114f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 115f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Constructors/destructor 116f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 117f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 118fb8b763f762ae21923c58d64caa729b012f40e05Romain GuyOpenGLRenderer::OpenGLRenderer(): mCaches(Caches::getInstance()) { 11906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 120db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 1211e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 122026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 123ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy memcpy(mMeshVertices, gMeshVertices, sizeof(gMeshVertices)); 124ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy 125ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy mFirstSnapshot = new Snapshot; 126ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy 127ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy GLint maxTextureUnits; 128ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits); 129ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy if (maxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) { 130889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy LOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT); 131889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 132b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy 133b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 134e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 135e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 13685bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain GuyOpenGLRenderer::~OpenGLRenderer() { 13729d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy // The context has already been destroyed at this point, do not call 13829d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy // GL APIs. All GL state should be kept in Caches.h 139e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 140e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 141f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 142f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Setup 143f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 144f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 14585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::setViewport(int width, int height) { 14608ae317c21ec3086b5017672bba87420cc38a407Romain Guy glViewport(0, 0, width, height); 147260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy mOrthoMatrix.loadOrtho(0, width, height, 0, -1, 1); 148bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 149bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mWidth = width; 150bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mHeight = height; 151eb99356a0548684a501766e6a524529ab93304c8Romain Guy 152eb99356a0548684a501766e6a524529ab93304c8Romain Guy mFirstSnapshot->height = height; 153eb99356a0548684a501766e6a524529ab93304c8Romain Guy mFirstSnapshot->viewport.set(0, 0, width, height); 154e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 155e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 1566b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guyvoid OpenGLRenderer::prepare(bool opaque) { 1578aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mFirstSnapshot, 1588aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag); 1598fb954263dd2f918ad339045cc6d82e346515599Romain Guy mSaveCount = 1; 160f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 161fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glViewport(0, 0, mWidth, mHeight); 162fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy 163d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy glDisable(GL_DITHER); 16408ae317c21ec3086b5017672bba87420cc38a407Romain Guy glDisable(GL_SCISSOR_TEST); 165bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1666b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy if (!opaque) { 1676b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 1686b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy glClear(GL_COLOR_BUFFER_BIT); 1696b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy } 170bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 17108ae317c21ec3086b5017672bba87420cc38a407Romain Guy glEnable(GL_SCISSOR_TEST); 172c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glScissor(0, 0, mWidth, mHeight); 173f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 174b82da65cb1601be504241f36778395cd6cb9f87bRomain Guy mSnapshot->setClip(0.0f, 0.0f, mWidth, mHeight); 175bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 176bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 177b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guyvoid OpenGLRenderer::finish() { 178b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy#if DEBUG_OPENGL 179b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy GLenum status = GL_NO_ERROR; 180b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy while ((status = glGetError()) != GL_NO_ERROR) { 181b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy LOGD("GL error from OpenGLRenderer: 0x%x", status); 182b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 183b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy#endif 184b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy} 185b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy 186da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::acquireContext() { 187da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram) { 188da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram->isInUse()) { 189da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram->remove(); 190da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram = NULL; 191da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 192da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 193da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 194da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 195da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::releaseContext() { 196eb99356a0548684a501766e6a524529ab93304c8Romain Guy glViewport(0, 0, mSnapshot->viewport.getWidth(), mSnapshot->viewport.getHeight()); 197da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 198da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_SCISSOR_TEST); 199da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy setScissorFromClip(); 200da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 201f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glDisable(GL_DITHER); 202f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 203f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, 0); 204f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 205da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.blend) { 206da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_BLEND); 207da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glBlendFunc(mCaches.lastSrcMode, mCaches.lastDstMode); 208f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBlendEquation(GL_FUNC_ADD); 209da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } else { 210da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glDisable(GL_BLEND); 211da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 212da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 213da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 214f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 215f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// State management 216f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 217f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 218bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::getSaveCount() const { 2197ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSaveCount; 220bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 221bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 222bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::save(int flags) { 2238aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveSnapshot(flags); 224bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 225bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 226bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restore() { 2272542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (mSaveCount > 1) { 2282542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2297ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 230bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 231bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 232bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restoreToCount(int saveCount) { 2338fb954263dd2f918ad339045cc6d82e346515599Romain Guy if (saveCount < 1) saveCount = 1; 234bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2358fb954263dd2f918ad339045cc6d82e346515599Romain Guy while (mSaveCount > saveCount) { 2362542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2377ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 238bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 239bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2408aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guyint OpenGLRenderer::saveSnapshot(int flags) { 2418aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mSnapshot, flags); 2428fb954263dd2f918ad339045cc6d82e346515599Romain Guy return mSaveCount++; 243bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 244bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 245bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::restoreSnapshot() { 2467ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = mSnapshot->flags & Snapshot::kFlagClipSet; 247bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy bool restoreLayer = mSnapshot->flags & Snapshot::kFlagIsLayer; 248eb99356a0548684a501766e6a524529ab93304c8Romain Guy bool restoreOrtho = mSnapshot->flags & Snapshot::kFlagDirtyOrtho; 249bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 250bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy sp<Snapshot> current = mSnapshot; 2517ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy sp<Snapshot> previous = mSnapshot->previous; 252bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 253eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (restoreOrtho) { 254eb99356a0548684a501766e6a524529ab93304c8Romain Guy Rect& r = previous->viewport; 255eb99356a0548684a501766e6a524529ab93304c8Romain Guy glViewport(r.left, r.top, r.right, r.bottom); 256eb99356a0548684a501766e6a524529ab93304c8Romain Guy mOrthoMatrix.load(current->orthoMatrix); 257eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 258eb99356a0548684a501766e6a524529ab93304c8Romain Guy 2598b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSaveCount--; 2608b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSnapshot = previous; 2618b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 262bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (restoreLayer) { 263d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy composeLayer(current, previous); 264d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 265bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2662542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (restoreClip) { 2672542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setScissorFromClip(); 2688fb954263dd2f918ad339045cc6d82e346515599Romain Guy } 2692542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 2702542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy return restoreClip; 271d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 2725cbbce535744b89df5ecea95de21ee3733298260Romain Guy 273f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 274bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy// Layers 275bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 276bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 277bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayer(float left, float top, float right, float bottom, 278bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const SkPaint* p, int flags) { 279eb99356a0548684a501766e6a524529ab93304c8Romain Guy const GLuint previousFbo = mSnapshot->fbo; 280eb99356a0548684a501766e6a524529ab93304c8Romain Guy const int count = saveSnapshot(flags); 281d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 282d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int alpha = 255; 283d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy SkXfermode::Mode mode; 284d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 285d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (p) { 286d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy alpha = p->getAlpha(); 287a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 288a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 289a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 290a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 291a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 292a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 293a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 294a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 295d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 296d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } else { 297d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 298d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 299d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 300dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (!mSnapshot->previous->invisible) { 301dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, mode, flags, previousFbo); 302dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy } 303d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 304d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 305bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 306bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 307bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayerAlpha(float left, float top, float right, float bottom, 308bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int alpha, int flags) { 3098aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy if (alpha == 0xff) { 3108aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, NULL, flags); 3118b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } else { 3128aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkPaint paint; 3138aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy paint.setAlpha(alpha); 3148aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, &paint, flags); 3158b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 316d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 317bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 3181c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 3191c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Layers are viewed by Skia are slightly different than layers in image editing 3201c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * programs (for instance.) When a layer is created, previously created layers 3211c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * and the frame buffer still receive every drawing command. For instance, if a 3221c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * layer is created and a shape intersecting the bounds of the layers and the 3231c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * framebuffer is draw, the shape will be drawn on both (unless the layer was 3241c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * created with the SkCanvas::kClipToLayer_SaveFlag flag.) 3251c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3261c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * A way to implement layers is to create an FBO for each layer, backed by an RGBA 3271c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * texture. Unfortunately, this is inefficient as it requires every primitive to 3281c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be drawn n + 1 times, where n is the number of active layers. In practice this 3291c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * means, for every primitive: 3301c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Switch active frame buffer 3311c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Change viewport, clip and projection matrix 3321c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Issue the drawing 3331c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3341c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Switching rendering target n + 1 times per drawn primitive is extremely costly. 3356b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy * To avoid this, layers are implemented in a different way here, at least in the 3366b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy * general case. FBOs are used, as an optimization, when the "clip to layer" flag 3376b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy * is set. When this flag is set we can redirect all drawing operations into a 3386b7bd24659fb175fe1f0e97c86c18969918b496aRomain Guy * single FBO. 3391c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3401c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * This implementation relies on the frame buffer being at least RGBA 8888. When 3411c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * a layer is created, only a texture is created, not an FBO. The content of the 3421c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer contained within the layer's bounds is copied into this texture 34387a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * using glCopyTexImage2D(). The layer's region is then cleared(1) in the frame 3441c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * buffer and drawing continues as normal. This technique therefore treats the 3451c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer as a scratch buffer for the layers. 3461c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3471c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * To compose the layers back onto the frame buffer, each layer texture 3481c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * (containing the original frame buffer data) is drawn as a simple quad over 3491c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * the frame buffer. The trick is that the quad is set as the composition 3501c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * destination in the blending equation, and the frame buffer becomes the source 3511c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * of the composition. 3521c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3531c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Drawing layers with an alpha value requires an extra step before composition. 3541c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * An empty quad is drawn over the layer's region in the frame buffer. This quad 3551c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is drawn with the rgba color (0,0,0,alpha). The alpha value offered by the 3561c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * quad is used to multiply the colors in the frame buffer. This is achieved by 3571c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * changing the GL blend functions for the GL_FUNC_ADD blend equation to 3581c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * GL_ZERO, GL_SRC_ALPHA. 3591c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3601c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Because glCopyTexImage2D() can be slow, an alternative implementation might 3611c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be use to draw a single clipped layer. The implementation described above 3621c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is correct in every case. 36387a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * 36487a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * (1) The frame buffer is actually not cleared right away. To allow the GPU 36587a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * to potentially optimize series of calls to glCopyTexImage2D, the frame 36687a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * buffer is left untouched until the first drawing operation. Only when 36787a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * something actually gets drawn are the layers regions cleared. 3681c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 369d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guybool OpenGLRenderer::createLayer(sp<Snapshot> snapshot, float left, float top, 370eb99356a0548684a501766e6a524529ab93304c8Romain Guy float right, float bottom, int alpha, SkXfermode::Mode mode, 371eb99356a0548684a501766e6a524529ab93304c8Romain Guy int flags, GLuint previousFbo) { 372eb99356a0548684a501766e6a524529ab93304c8Romain Guy LAYER_LOGD("Requesting layer %.2fx%.2f", right - left, bottom - top); 373fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy LAYER_LOGD("Layer cache size = %d", mCaches.layerCache.getSize()); 374dda570201ac851dd85af3861f7e575721d3345daRomain Guy 375eb99356a0548684a501766e6a524529ab93304c8Romain Guy const bool fboLayer = flags & SkCanvas::kClipToLayer_SaveFlag; 376eb99356a0548684a501766e6a524529ab93304c8Romain Guy 377f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Window coordinates of the layer 3788aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy Rect bounds(left, top, right, bottom); 379eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (!fboLayer) { 380eb99356a0548684a501766e6a524529ab93304c8Romain Guy mSnapshot->transform->mapRect(bounds); 381eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Layers only make sense if they are in the framebuffer's bounds 382eb99356a0548684a501766e6a524529ab93304c8Romain Guy bounds.intersect(*mSnapshot->clipRect); 383eb99356a0548684a501766e6a524529ab93304c8Romain Guy bounds.snapToPixelBoundaries(); 384eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 385bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy 386b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy if (bounds.isEmpty() || bounds.getWidth() > mMaxTextureSize || 387b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy bounds.getHeight() > mMaxTextureSize) { 388dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy snapshot->invisible = true; 389dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy } else { 390dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy // TODO: Should take the mode into account 391d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy snapshot->invisible = snapshot->previous->invisible || 392d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy (alpha <= ALPHA_THRESHOLD && fboLayer); 393dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy } 394dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 395dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy // Bail out if we won't draw in this snapshot 396dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (snapshot->invisible) { 397b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy return false; 398b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 399dda570201ac851dd85af3861f7e575721d3345daRomain Guy 4000bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy glActiveTexture(GL_TEXTURE0); 4010bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy 4028550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy Layer* layer = mCaches.layerCache.get(bounds.getWidth(), bounds.getHeight()); 403f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy if (!layer) { 404f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy return false; 405bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 406bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 407dda570201ac851dd85af3861f7e575721d3345daRomain Guy layer->mode = mode; 408f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy layer->alpha = alpha; 4098aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy layer->layer.set(bounds); 4108550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy layer->texCoords.set(0.0f, bounds.getHeight() / float(layer->height), 4118550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy bounds.getWidth() / float(layer->width), 0.0f); 412dda570201ac851dd85af3861f7e575721d3345daRomain Guy 4138fb954263dd2f918ad339045cc6d82e346515599Romain Guy // Save the layer in the snapshot 4148fb954263dd2f918ad339045cc6d82e346515599Romain Guy snapshot->flags |= Snapshot::kFlagIsLayer; 415dda570201ac851dd85af3861f7e575721d3345daRomain Guy snapshot->layer = layer; 4161d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 417eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (fboLayer) { 418eb99356a0548684a501766e6a524529ab93304c8Romain Guy layer->fbo = mCaches.fboCache.get(); 41938c85b907a478af96d71b9a5df5a2066b8475311Romain Guy 420eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->flags |= Snapshot::kFlagIsFboLayer; 421eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->fbo = layer->fbo; 422eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->resetTransform(-bounds.left, -bounds.top, 0.0f); 423eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->resetClip(0.0f, 0.0f, bounds.getWidth(), bounds.getHeight()); 424eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->viewport.set(0.0f, 0.0f, bounds.getWidth(), bounds.getHeight()); 425eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->height = bounds.getHeight(); 426eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->flags |= Snapshot::kFlagDirtyOrtho; 427eb99356a0548684a501766e6a524529ab93304c8Romain Guy snapshot->orthoMatrix.load(mOrthoMatrix); 4280bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy 429eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Bind texture to FBO 430eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, layer->fbo); 431eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindTexture(GL_TEXTURE_2D, layer->texture); 432eb99356a0548684a501766e6a524529ab93304c8Romain Guy 433eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Initialize the texture if needed 434eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (layer->empty) { 435eb99356a0548684a501766e6a524529ab93304c8Romain Guy layer->empty = false; 4368550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, layer->width, layer->height, 0, 437eb99356a0548684a501766e6a524529ab93304c8Romain Guy GL_RGBA, GL_UNSIGNED_BYTE, NULL); 438eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 439eb99356a0548684a501766e6a524529ab93304c8Romain Guy 440eb99356a0548684a501766e6a524529ab93304c8Romain Guy glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 441eb99356a0548684a501766e6a524529ab93304c8Romain Guy layer->texture, 0); 442eb99356a0548684a501766e6a524529ab93304c8Romain Guy 443e91080581f467d55913a8c5ab53dedc2dab2e5b6Romain Guy#if DEBUG_LAYERS 444eb99356a0548684a501766e6a524529ab93304c8Romain Guy GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); 445eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (status != GL_FRAMEBUFFER_COMPLETE) { 446eb99356a0548684a501766e6a524529ab93304c8Romain Guy LOGE("Framebuffer incomplete (GL error code 0x%x)", status); 447eb99356a0548684a501766e6a524529ab93304c8Romain Guy 448eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previousFbo); 449eb99356a0548684a501766e6a524529ab93304c8Romain Guy glDeleteTextures(1, &layer->texture); 450eb99356a0548684a501766e6a524529ab93304c8Romain Guy mCaches.fboCache.put(layer->fbo); 451eb99356a0548684a501766e6a524529ab93304c8Romain Guy 452eb99356a0548684a501766e6a524529ab93304c8Romain Guy delete layer; 453eb99356a0548684a501766e6a524529ab93304c8Romain Guy 454eb99356a0548684a501766e6a524529ab93304c8Romain Guy return false; 455eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 456e91080581f467d55913a8c5ab53dedc2dab2e5b6Romain Guy#endif 457eb99356a0548684a501766e6a524529ab93304c8Romain Guy 458eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Clear the FBO 45993d2361c6d294c390cb5c4a13bd1b88dcd465fd7Romain Guy glScissor(0.0f, 0.0f, bounds.getWidth() + 1.0f, bounds.getHeight() + 1.0f); 460eb99356a0548684a501766e6a524529ab93304c8Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 461eb99356a0548684a501766e6a524529ab93304c8Romain Guy glClear(GL_COLOR_BUFFER_BIT); 462eb07af687319a0f52c219c3c0c1b73162fce9d04Romain Guy 463eb07af687319a0f52c219c3c0c1b73162fce9d04Romain Guy setScissorFromClip(); 464eb99356a0548684a501766e6a524529ab93304c8Romain Guy 465eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Change the ortho projection 466eb99356a0548684a501766e6a524529ab93304c8Romain Guy glViewport(0, 0, bounds.getWidth(), bounds.getHeight()); 467eb99356a0548684a501766e6a524529ab93304c8Romain Guy mOrthoMatrix.loadOrtho(0.0f, bounds.getWidth(), bounds.getHeight(), 0.0f, -1.0f, 1.0f); 468eb99356a0548684a501766e6a524529ab93304c8Romain Guy } else { 469eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Copy the framebuffer into the layer 470eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindTexture(GL_TEXTURE_2D, layer->texture); 471eb99356a0548684a501766e6a524529ab93304c8Romain Guy 472c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy if (layer->empty) { 473c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bounds.left, mHeight - bounds.bottom, 474c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy layer->width, layer->height, 0); 475c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy layer->empty = false; 476c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy } else { 477c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bounds.left, mHeight - bounds.bottom, 478c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy bounds.getWidth(), bounds.getHeight()); 479c00972bb162779e52d1b0d8f662a9f6033bf9182Romain Guy } 480eb99356a0548684a501766e6a524529ab93304c8Romain Guy 481eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Enqueue the buffer coordinates to clear the corresponding region later 482eb99356a0548684a501766e6a524529ab93304c8Romain Guy mLayers.push(new Rect(bounds)); 483eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 484f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 485d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return true; 486bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 487bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 4881c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 4891c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Read the documentation of createLayer() before doing anything in this method. 4901c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 4911d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guyvoid OpenGLRenderer::composeLayer(sp<Snapshot> current, sp<Snapshot> previous) { 4921d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy if (!current->layer) { 4931d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LOGE("Attempting to compose a layer that does not exist"); 4941d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy return; 4951d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 4961d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 497eb99356a0548684a501766e6a524529ab93304c8Romain Guy const bool fboLayer = current->flags & SkCanvas::kClipToLayer_SaveFlag; 498eb99356a0548684a501766e6a524529ab93304c8Romain Guy 499eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (fboLayer) { 500eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Unbind current FBO and restore previous one 501eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previous->fbo); 502eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 503eb99356a0548684a501766e6a524529ab93304c8Romain Guy 5041d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Restore the clip from the previous snapshot 5058aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *previous->clipRect; 506eb99356a0548684a501766e6a524529ab93304c8Romain Guy glScissor(clip.left, previous->height - clip.bottom, clip.getWidth(), clip.getHeight()); 5071d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 5081d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Layer* layer = current->layer; 5091d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy const Rect& rect = layer->layer; 5101d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 511eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (!fboLayer && layer->alpha < 255) { 512f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawColorRect(rect.left, rect.top, rect.right, rect.bottom, 5131c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy layer->alpha << 24, SkXfermode::kDstIn_Mode, true); 514f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 515f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 5168550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy const Rect& texCoords = layer->texCoords; 5178550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy resetDrawTextureTexCoords(texCoords.left, texCoords.top, texCoords.right, texCoords.bottom); 5188b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 519eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (fboLayer) { 520eb99356a0548684a501766e6a524529ab93304c8Romain Guy drawTextureRect(rect.left, rect.top, rect.right, rect.bottom, 521eb99356a0548684a501766e6a524529ab93304c8Romain Guy layer->texture, layer->alpha / 255.0f, layer->mode, layer->blend); 522eb99356a0548684a501766e6a524529ab93304c8Romain Guy } else { 523eb99356a0548684a501766e6a524529ab93304c8Romain Guy drawTextureMesh(rect.left, rect.top, rect.right, rect.bottom, layer->texture, 524eb99356a0548684a501766e6a524529ab93304c8Romain Guy 1.0f, layer->mode, layer->blend, &mMeshVertices[0].position[0], 525eb99356a0548684a501766e6a524529ab93304c8Romain Guy &mMeshVertices[0].texture[0], GL_TRIANGLE_STRIP, gMeshCount, true, true); 526eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 5271d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 5288b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 5298b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 530eb99356a0548684a501766e6a524529ab93304c8Romain Guy if (fboLayer) { 531eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Detach the texture from the FBO 532eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, current->fbo); 533eb99356a0548684a501766e6a524529ab93304c8Romain Guy glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0); 534eb99356a0548684a501766e6a524529ab93304c8Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previous->fbo); 535eb99356a0548684a501766e6a524529ab93304c8Romain Guy 536eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Put the FBO name back in the cache, if it doesn't fit, it will be destroyed 537eb99356a0548684a501766e6a524529ab93304c8Romain Guy mCaches.fboCache.put(current->fbo); 538eb99356a0548684a501766e6a524529ab93304c8Romain Guy } 539eb99356a0548684a501766e6a524529ab93304c8Romain Guy 540eb99356a0548684a501766e6a524529ab93304c8Romain Guy // Failing to add the layer to the cache should happen only if the layer is too large 5418550c4c7b5952b7a4e1e0ede95c9492d03099a13Romain Guy if (!mCaches.layerCache.put(layer)) { 5421d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LAYER_LOGD("Deleting layer"); 5431d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy glDeleteTextures(1, &layer->texture); 5441d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy delete layer; 5451d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 5461d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy} 5471d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 5488694230ff25fa0a60e480d424843e56b718f0516Romain Guyvoid OpenGLRenderer::clearLayerRegions() { 549dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mLayers.size() == 0 || mSnapshot->invisible) return; 5508694230ff25fa0a60e480d424843e56b718f0516Romain Guy 5518694230ff25fa0a60e480d424843e56b718f0516Romain Guy for (uint32_t i = 0; i < mLayers.size(); i++) { 5528694230ff25fa0a60e480d424843e56b718f0516Romain Guy Rect* bounds = mLayers.itemAt(i); 5538694230ff25fa0a60e480d424843e56b718f0516Romain Guy 5548694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Clear the framebuffer where the layer will draw 555d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy glScissor(bounds->left, mSnapshot->height - bounds->bottom, 5568694230ff25fa0a60e480d424843e56b718f0516Romain Guy bounds->getWidth(), bounds->getHeight()); 5578694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 5588694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClear(GL_COLOR_BUFFER_BIT); 5598694230ff25fa0a60e480d424843e56b718f0516Romain Guy 5608694230ff25fa0a60e480d424843e56b718f0516Romain Guy delete bounds; 5618694230ff25fa0a60e480d424843e56b718f0516Romain Guy } 5628694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.clear(); 5638694230ff25fa0a60e480d424843e56b718f0516Romain Guy 5648694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Restore the clip 5658694230ff25fa0a60e480d424843e56b718f0516Romain Guy setScissorFromClip(); 5668694230ff25fa0a60e480d424843e56b718f0516Romain Guy} 5678694230ff25fa0a60e480d424843e56b718f0516Romain Guy 568bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 569f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Transforms 570f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 571f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 572f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::translate(float dx, float dy) { 5738aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->translate(dx, dy, 0.0f); 574f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 575f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 576f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::rotate(float degrees) { 5778aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->rotate(degrees, 0.0f, 0.0f, 1.0f); 578f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 579f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 580f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::scale(float sx, float sy) { 5818aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->scale(sx, sy, 1.0f); 582f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 583f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 584f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::setMatrix(SkMatrix* matrix) { 5858aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->load(*matrix); 586f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 587f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 58841030da16856c8869e1e51d4a0405432fa96614eRomain Guyconst float* OpenGLRenderer::getMatrix() const { 58999bcdc52dcb365ed7d8cfa13540fb33fbcbbac9dRomain Guy if (mSnapshot->fbo != 0) { 59099bcdc52dcb365ed7d8cfa13540fb33fbcbbac9dRomain Guy return &mSnapshot->transform->data[0]; 59199bcdc52dcb365ed7d8cfa13540fb33fbcbbac9dRomain Guy } 59299bcdc52dcb365ed7d8cfa13540fb33fbcbbac9dRomain Guy return &mIdentity.data[0]; 59341030da16856c8869e1e51d4a0405432fa96614eRomain Guy} 59441030da16856c8869e1e51d4a0405432fa96614eRomain Guy 595f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::getMatrix(SkMatrix* matrix) { 5968aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->copyTo(*matrix); 597f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 598f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 599f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::concatMatrix(SkMatrix* matrix) { 600e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy SkMatrix transform; 601e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy mSnapshot->transform->copyTo(transform); 602e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy transform.preConcat(*matrix); 603e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy mSnapshot->transform->load(transform); 604f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 605f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 606f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 607f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Clipping 608f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 609f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 610bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::setScissorFromClip() { 611e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy Rect clip(*mSnapshot->clipRect); 612e5ebcb0107a939395e03592fd44c746cd09e311dRomain Guy clip.snapToPixelBoundaries(); 613eb99356a0548684a501766e6a524529ab93304c8Romain Guy glScissor(clip.left, mSnapshot->height - clip.bottom, clip.getWidth(), clip.getHeight()); 6149d5316e3f56d138504565ff311145ac01621dff4Romain Guy} 6159d5316e3f56d138504565ff311145ac01621dff4Romain Guy 6169d5316e3f56d138504565ff311145ac01621dff4Romain Guyconst Rect& OpenGLRenderer::getClipBounds() { 617079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return mSnapshot->getLocalClip(); 618bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 619bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 620c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guybool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) { 621dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mSnapshot->invisible) { 622dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy return true; 623dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy } 624dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 6251d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Rect r(left, top, right, bottom); 6268aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->mapRect(r); 627d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy r.snapToPixelBoundaries(); 628d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy 629d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy Rect clipRect(*mSnapshot->clipRect); 630d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy clipRect.snapToPixelBoundaries(); 631d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy 632d2a1ff003b9b1212c9ab4b5f679b5b097720a359Romain Guy return !clipRect.intersects(r); 633c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 634c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy 635079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guybool OpenGLRenderer::clipRect(float left, float top, float right, float bottom, SkRegion::Op op) { 636079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bool clipped = mSnapshot->clip(left, top, right, bottom, op); 6377ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (clipped) { 6387ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 6397ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 6408aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->isEmpty(); 641e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 642e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 643f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 644f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Drawing 645f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 646f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 647c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, float left, float top, const SkPaint* paint) { 6486926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float right = left + bitmap->width(); 6496926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float bottom = top + bitmap->height(); 6506926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 6516926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 6526926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6536926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6546926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 65561c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 656fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 6579cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 65822158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 65922158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 6606926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy drawTextureRect(left, top, right, bottom, texture, paint); 6618ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 6628ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 663f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, const SkMatrix* matrix, const SkPaint* paint) { 664f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy Rect r(0.0f, 0.0f, bitmap->width(), bitmap->height()); 665f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const mat4 transform(*matrix); 666f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy transform.mapRect(r); 667f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 6686926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(r.left, r.top, r.right, r.bottom)) { 6696926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6706926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6716926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 67261c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 673fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 6749cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 67522158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 67622158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 67782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(r.left, r.top, r.right, r.bottom, texture, paint); 678f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy} 679f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 6808ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, 6818ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float srcLeft, float srcTop, float srcRight, float srcBottom, 6828ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float dstLeft, float dstTop, float dstRight, float dstBottom, 683f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const SkPaint* paint) { 6846926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(dstLeft, dstTop, dstRight, dstBottom)) { 6856926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6866926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6876926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 68861c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 689fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 6909cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 69122158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 6928ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 6938ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float width = texture->width; 6948ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float height = texture->height; 695c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 6968ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u1 = srcLeft / width; 6978ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v1 = srcTop / height; 6988ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u2 = srcRight / width; 6998ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v2 = srcBottom / height; 700c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 7018ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(u1, v1, u2, v2); 7028ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 70382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(dstLeft, dstTop, dstRight, dstBottom, texture, paint); 7048ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 7058ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 706ce0537b80087a6225273040a987414b1dd081aa0Romain Guy} 707ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 7084aa90573bbf86db0d33a3a790c5dbd0d93b95cfeRomain Guyvoid OpenGLRenderer::drawPatch(SkBitmap* bitmap, const int32_t* xDivs, const int32_t* yDivs, 7094bb942083a0d4db746adf95349108dd8ef842e32Romain Guy const uint32_t* colors, uint32_t width, uint32_t height, int8_t numColors, 7104bb942083a0d4db746adf95349108dd8ef842e32Romain Guy float left, float top, float right, float bottom, const SkPaint* paint) { 7116926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 7126926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 7136926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 7146926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 71561c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 716fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 7179cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 71822158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 719f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 720f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy int alpha; 721f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy SkXfermode::Mode mode; 722f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy getAlphaAndMode(paint, &alpha, &mode); 723f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 7242728f961614a385df1f056fc24803a9f65c90fabRomain Guy const Patch* mesh = mCaches.patchCache.get(bitmap->width(), bitmap->height(), 7254bb942083a0d4db746adf95349108dd8ef842e32Romain Guy right - left, bottom - top, xDivs, yDivs, colors, width, height, numColors); 726f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 727f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // Specify right and bottom as +1.0f from left/top to prevent scaling since the 728f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // patch mesh already defines the final size 729a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, left + 1.0f, top + 1.0f, texture->id, alpha / 255.0f, 730a979474f15b454c8e2963f239a3770e200bb227cRomain Guy mode, texture->blend, &mesh->vertices[0].position[0], 7316820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mesh->vertices[0].texture[0], GL_TRIANGLES, mesh->verticesCount); 732f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 733f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 734759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guyvoid OpenGLRenderer::drawLines(float* points, int count, const 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, 75129d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy mode, false, true, mCaches.line.getVertices(), mCaches.line.getTexCoords()); 752c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } else { 753c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy setupColorRect(0.0f, 0.0f, 1.0f, 1.0f, r, g, b, a, mode, false); 754c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 755c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 756c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const float strokeWidth = paint->getStrokeWidth(); 75729d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy const GLsizei elementsCount = isAA ? mCaches.line.getElementsCount() : gMeshCount; 758c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const GLenum drawMode = isAA ? GL_TRIANGLES : GL_TRIANGLE_STRIP; 759759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 760759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy for (int i = 0; i < count; i += 4) { 761759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy float tx = 0.0f; 762759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy float ty = 0.0f; 763759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 764c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (isAA) { 76529d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy mCaches.line.update(points[i], points[i + 1], points[i + 2], points[i + 3], 766c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy strokeWidth, tx, ty); 767c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } else { 768b5ab4173e0927e4668a45298c9900cd8007584e1Romain Guy ty = strokeWidth <= 1.0f ? 0.0f : -strokeWidth * 0.5f; 769c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 770759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 771759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float dx = points[i + 2] - points[i]; 772759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float dy = points[i + 3] - points[i + 1]; 773759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float mag = sqrtf(dx * dx + dy * dy); 774759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float angle = acos(dx / mag); 775759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 776759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.loadTranslate(points[i], points[i + 1], 0.0f); 777759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy if (angle > MIN_ANGLE || angle < -MIN_ANGLE) { 778759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.rotate(angle * RAD_TO_DEG, 0.0f, 0.0f, 1.0f); 779759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 780759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.translate(tx, ty, 0.0f); 781c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (!isAA) { 78229d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy float length = mCaches.line.getLength(points[i], points[i + 1], 78329d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy points[i + 2], points[i + 3]); 784c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy mModelView.scale(length, strokeWidth, 1.0f); 785c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 786759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 787759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 788759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy if (mShader) { 789759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mShader->updateTransforms(mCaches.currentProgram, mModelView, *mSnapshot); 790759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 791759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 792c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy glDrawArrays(drawMode, 0, elementsCount); 793759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 794759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 79529d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy if (isAA) { 79629d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 79729d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy } 798759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy} 799759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 80085bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) { 8018aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *mSnapshot->clipRect; 8023d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode, true); 803c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 8049d5316e3f56d138504565ff311145ac01621dff4Romain Guy 805bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawRect(float left, float top, float right, float bottom, const SkPaint* p) { 8066926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 8076926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 8086926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 8096926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 810026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy SkXfermode::Mode mode; 811a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 812a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 813a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 814a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 815a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 816a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 817a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 818a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 819026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 820026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 821026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Skia draws using the color's alpha channel if < 255 822026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Otherwise, it uses the paint's alpha 823026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color = p->getColor(); 824d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (((color >> 24) & 0xff) == 255) { 825026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy color |= p->getAlpha() << 24; 826026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 827026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 828026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(left, top, right, bottom, color, mode); 829c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 8309d5316e3f56d138504565ff311145ac01621dff4Romain Guy 831e8e62a4a032a80409114a37908b5f18ab0080848Romain Guyvoid OpenGLRenderer::drawText(const char* text, int bytesCount, int count, 832e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy float x, float y, SkPaint* paint) { 833f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (text == NULL || count == 0 || (paint->getAlpha() == 0 && paint->getXfermode() == NULL)) { 834e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy return; 835e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 836dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mSnapshot->invisible) return; 837e2d345ea67e2960b37bfdc0fc8626d1bfa747404Romain Guy 838f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy paint->setAntiAlias(true); 839e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 840a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy float length = -1.0f; 841e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy switch (paint->getTextAlign()) { 842e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kCenter_Align: 843e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 844e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length / 2.0f; 845e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 846e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kRight_Align: 847e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 848e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length; 849e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 850e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy default: 851e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 852e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 853e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 854694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy int alpha; 855694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy SkXfermode::Mode mode; 856694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy getAlphaAndMode(paint, &alpha, &mode); 857694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 8582542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy uint32_t color = paint->getColor(); 8592542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = alpha / 255.0f; 8602542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 8612542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 8622542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 8632542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 864b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy FontRenderer& fontRenderer = mCaches.fontRenderer.getFontRenderer(paint); 865b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.setFont(paint, SkTypeface::UniqueID(paint->getTypeface()), 866fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy paint->getTextSize()); 867e2d345ea67e2960b37bfdc0fc8626d1bfa747404Romain Guy 8689d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy Rect clipRect(*mSnapshot->clipRect); 8699d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy glScissor(clipRect.left, mSnapshot->height - clipRect.bottom, 8709d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy clipRect.getWidth(), clipRect.getHeight()); 8719d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy 8721e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy if (mHasShadow) { 8731e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy glActiveTexture(gTextureUnits[0]); 874b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy mCaches.dropShadowCache.setFontRenderer(fontRenderer); 875fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const ShadowTexture* shadow = mCaches.dropShadowCache.get(paint, text, bytesCount, 8761e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy count, mShadowRadius); 8771e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy const AutoTexture autoCleanup(shadow); 8780a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8792542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setupShadow(shadow, x, y, mode, a); 8800a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 8820a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 883fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 8841e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy } 8851e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 88606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 887db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 88806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 889e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy // Assume that the modelView matrix does not force scales, rotates, etc. 890e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy const bool linearFilter = mSnapshot->transform->changesBounds(); 891e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy setupTextureAlpha8(fontRenderer.getTexture(linearFilter), 0, 0, textureUnit, 892e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy x, y, r, g, b, a, mode, false, true); 89306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 89409147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy const Rect& clip = mSnapshot->getLocalClip(); 8958694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 8969d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy 897b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.renderText(paint, &clip, text, 0, bytesCount, count, x, y); 898694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 899694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); 900fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 901a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy 9020a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawTextDecorations(text, bytesCount, length, x, y, paint); 9039d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy 9049d13fe25f4f10b25776b1dc5c858f9ebb0b28b30Romain Guy setScissorFromClip(); 905694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy} 906694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 9077fbcc0492fca03857e3c45064f4aa040af817d55Romain Guyvoid OpenGLRenderer::drawPath(SkPath* path, SkPaint* paint) { 908dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy if (mSnapshot->invisible) return; 909dbc26d2ba13f80a7590c57de2d80530d96832969Romain Guy 9107fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy GLuint textureUnit = 0; 9117fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 9127fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 913fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const PathTexture* texture = mCaches.pathCache.get(path, paint); 9149cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 91522158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 9167fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 9178b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float x = texture->left - texture->offset; 9188b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float y = texture->top - texture->offset; 9198b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 9208b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy if (quickReject(x, y, x + texture->width, y + texture->height)) { 9218b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy return; 9228b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 9238b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 9247fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy int alpha; 9257fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy SkXfermode::Mode mode; 9267fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy getAlphaAndMode(paint, &alpha, &mode); 9277fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 9287fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy uint32_t color = paint->getColor(); 9297fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat a = alpha / 255.0f; 9307fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 9317fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 9327fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 9337fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 9340a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, x, y, r, g, b, a, mode, true, true); 9350a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9368694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 9378694230ff25fa0a60e480d424843e56b718f0516Romain Guy 9380a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 9390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 940fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 9417fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy} 9427fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 9436926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 944d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy// Shaders 945d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 946d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 947d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guyvoid OpenGLRenderer::resetShader() { 94806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 94906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy} 95006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 95106f96e2652e4855b6520ad9dd70583677605b79aRomain Guyvoid OpenGLRenderer::setupShader(SkiaShader* shader) { 95206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = shader; 95306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 954fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->set(&mCaches.textureCache, &mCaches.gradientCache); 95506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy } 9567fac2e18339f765320d759e8d4c090f92431959eRomain Guy} 9577fac2e18339f765320d759e8d4c090f92431959eRomain Guy 958d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 959db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy// Color filters 960db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 961db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 962db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::resetColorFilter() { 963db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 964db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 965db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 966db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::setupColorFilter(SkiaColorFilter* filter) { 967db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = filter; 968db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 969db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 970db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 9711e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy// Drop shadow 9721e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 9731e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 9741e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::resetShadow() { 9751e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 9761e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 9771e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 9781e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::setupShadow(float radius, float dx, float dy, int color) { 9791e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = true; 9801e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowRadius = radius; 9811e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDx = dx; 9821e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDy = dy; 9831e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowColor = color; 9841e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 9851e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 9861e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 9876926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy// Drawing implementation 9886926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 9896926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 9900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupShadow(const ShadowTexture* texture, float x, float y, 9912542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy SkXfermode::Mode mode, float alpha) { 9920a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sx = x - texture->left + mShadowDx; 9930a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sy = y - texture->top + mShadowDy; 9940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9952542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const int shadowAlpha = ((mShadowColor >> 24) & 0xFF); 9962542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = shadowAlpha < 255 ? shadowAlpha / 255.0f : alpha; 9970a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat r = a * ((mShadowColor >> 16) & 0xFF) / 255.0f; 9980a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat g = a * ((mShadowColor >> 8) & 0xFF) / 255.0f; 9990a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat b = a * ((mShadowColor ) & 0xFF) / 255.0f; 10000a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10010a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint textureUnit = 0; 10020a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, sx, sy, r, g, b, a, mode, true, false); 10030a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 10040a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10050a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(const Texture* texture, GLuint& textureUnit, 10060a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, float r, float g, float b, float a, SkXfermode::Mode mode, 10070a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bool transforms, bool applyFilters) { 10080a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture->id, texture->width, texture->height, textureUnit, 1009759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy x, y, r, g, b, a, mode, transforms, applyFilters, 1010759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0]); 10110a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 10120a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10130a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 10140a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 10150a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters) { 1016759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy setupTextureAlpha8(texture, width, height, textureUnit, 1017759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy x, y, r, g, b, a, mode, transforms, applyFilters, 1018759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0]); 1019759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy} 1020759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 1021759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 1022759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 1023759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters, 1024759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy GLvoid* vertices, GLvoid* texCoords) { 10250a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Describe the required shaders 10260a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy ProgramDescription description; 10270a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasTexture = true; 10280a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasAlpha8Texture = true; 1029707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy const bool setColor = description.setAlpha8Color(r, g, b, a); 10300a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10310a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 10320a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 10330a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mShader->describe(description, mExtensions); 10340a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10350a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 10360a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mColorFilter->describe(description, mExtensions); 10370a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10380a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1040a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Setup the blending mode 1041a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy chooseBlending(true, mode, description); 1042a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 10430a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Build and use the appropriate shader 1044fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 10450a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10460a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, textureUnit); 1047fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), textureUnit); 10480a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1049fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 10500a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glEnableVertexAttribArray(texCoordsSlot); 10510a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10520a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes 1053fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1054759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy gMeshStride, vertices); 10550a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, 1056759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy gMeshStride, texCoords); 10570a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10580a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup uniforms 10590a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (transforms) { 10600a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadTranslate(x, y, 0.0f); 10610a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.scale(width, height, 1.0f); 10620a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } else { 10630a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadIdentity(); 10640a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10658aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1066707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy if (setColor) { 1067707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy mCaches.currentProgram->setColor(r, g, b, a); 1068707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy } 10690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10700a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy textureUnit++; 10710a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 10720a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes and uniforms required by the shaders 10730a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 1074fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 10750a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10760a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 1077fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 10780a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10790a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10800a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 10810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1082f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy// Same values used by Skia 10830a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdStrikeThru_Offset (-6.0f / 21.0f) 10840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Offset (1.0f / 9.0f) 10850a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Thickness (1.0f / 18.0f) 10860a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10870a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::drawTextDecorations(const char* text, int bytesCount, float length, 10880a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, SkPaint* paint) { 10890a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Handle underline and strike-through 10900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy uint32_t flags = paint->getFlags(); 10910a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) { 10920a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float underlineWidth = length; 10930a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // If length is > 0.0f, we already measured the text for the text alignment 10940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (length <= 0.0f) { 10950a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy underlineWidth = paint->measureText(text, bytesCount); 10960a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10970a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10980a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float offsetX = 0; 10990a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy switch (paint->getTextAlign()) { 11000a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kCenter_Align: 11010a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth * 0.5f; 11020a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 11030a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kRight_Align: 11040a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth; 11050a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 11060a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy default: 11070a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 11080a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11090a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 11100a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (underlineWidth > 0.0f) { 1111e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const float textSize = paint->getTextSize(); 1112e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const float strokeWidth = textSize * kStdUnderline_Thickness; 11130a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1114e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const float left = x - offsetX; 11150a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float top = 0.0f; 1116e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy 1117e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const int pointsCount = 4 * (flags & SkPaint::kStrikeThruText_Flag ? 2 : 1); 1118e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy float points[pointsCount]; 1119e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy int currentPoint = 0; 11200a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 11210a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kUnderlineText_Flag) { 11220a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdUnderline_Offset; 1123e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left; 1124e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 1125e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left + underlineWidth; 1126e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 11270a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11280a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 11290a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kStrikeThruText_Flag) { 11300a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdStrikeThru_Offset; 1131e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left; 1132e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 1133e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left + underlineWidth; 1134e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 11350a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 1136e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy 1137e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy SkPaint linesPaint(*paint); 1138e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy linesPaint.setStrokeWidth(strokeWidth); 1139e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy 1140e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy drawLines(&points[0], pointsCount, &linesPaint); 11410a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11420a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 11430a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 11440a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1145026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, 11461c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy int color, SkXfermode::Mode mode, bool ignoreTransform) { 11478694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 11488694230ff25fa0a60e480d424843e56b718f0516Romain Guy 1149d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // If a shader is set, preserve only the alpha 115006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 1151d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy color |= 0x00ffffff; 1152d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 1153d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 1154d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // Render using pre-multiplied alpha 1155026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const int alpha = (color >> 24) & 0xFF; 1156d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy const GLfloat a = alpha / 255.0f; 1157c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 1158c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 1159c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 1160c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 1161c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy setupColorRect(left, top, right, bottom, r, g, b, a, mode, ignoreTransform); 1162c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 1163c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy // Draw the mesh 1164c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 1165c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy} 1166c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 1167c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guyvoid OpenGLRenderer::setupColorRect(float left, float top, float right, float bottom, 1168c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy float r, float g, float b, float a, SkXfermode::Mode mode, bool ignoreTransform) { 116906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 11709d5316e3f56d138504565ff311145ac01621dff4Romain Guy 117106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Describe the required shaders 1172889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 1173707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy const bool setColor = description.setColor(r, g, b, a); 1174707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy 117506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 117606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader->describe(description, mExtensions); 1177c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 1178db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1179db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 1180db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1181c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 11821c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy // Setup the blending mode 1183c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy chooseBlending(a < 1.0f || (mShader && mShader->blend()), mode, description); 1184a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 118506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Build and use the appropriate shader 1186fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 1187c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 118806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes 1189fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1190ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, &mMeshVertices[0].position[0]); 1191c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 119206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup uniforms 1193889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.loadTranslate(left, top, 0.0f); 1194889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 119506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (!ignoreTransform) { 11968aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1197889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } else { 119806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mat4 identity; 1199fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, identity); 1200889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 1201707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy mCaches.currentProgram->setColor(r, g, b, a); 1202d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 120306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes and uniforms required by the shaders 120406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 1205fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 1206d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 1207db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1208fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1209db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1210d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy} 1211d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 121282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 1213a979474f15b454c8e2963f239a3770e200bb227cRomain Guy const Texture* texture, const SkPaint* paint) { 121482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy int alpha; 121582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy SkXfermode::Mode mode; 121682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy getAlphaAndMode(paint, &alpha, &mode); 121782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 12186820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy drawTextureMesh(left, top, right, bottom, texture->id, alpha / 255.0f, mode, 12196820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy texture->blend, &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], 12206820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GL_TRIANGLE_STRIP, gMeshCount); 122185bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy} 122285bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 1223bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 1224a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend) { 1225a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, right, bottom, texture, alpha, mode, blend, 12266820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], 12276820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GL_TRIANGLE_STRIP, gMeshCount); 1228f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 1229f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 1230f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guyvoid OpenGLRenderer::drawTextureMesh(float left, float top, float right, float bottom, 1231a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend, 12326820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, 1233f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy bool swapSrcDst, bool ignoreTransform) { 12348694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 12358694230ff25fa0a60e480d424843e56b718f0516Romain Guy 1236889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 1237889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasTexture = true; 1238707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy const bool setColor = description.setColor(alpha, alpha, alpha, alpha); 1239db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1240db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 1241db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1242889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 1243bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.loadTranslate(left, top, 0.0f); 1244bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.scale(right - left, bottom - top, 1.0f); 1245bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1246f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy chooseBlending(blend || alpha < 1.0f, mode, description, swapSrcDst); 1247a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1248fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 1249f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (!ignoreTransform) { 1250f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1251f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } else { 1252f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mat4 m; 1253f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, m); 1254f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 1255bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1256889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Texture 125706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, 0); 1258fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), 0); 1259c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 1260a979474f15b454c8e2963f239a3770e200bb227cRomain Guy // Always premultiplied 1261707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy if (setColor) { 1262707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy mCaches.currentProgram->setColor(alpha, alpha, alpha, alpha); 1263707b2f78ccaa09965d7e030fda3a883ce9b75ea8Romain Guy } 1264bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1265889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Mesh 1266fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 1267889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glEnableVertexAttribArray(texCoordsSlot); 1268fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1269ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, vertices); 1270889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, gMeshStride, texCoords); 1271bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1272db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy // Color filter 1273db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1274fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1275db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1276db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 12776820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy glDrawArrays(drawMode, 0, elementsCount); 1278889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDisableVertexAttribArray(texCoordsSlot); 127982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy} 128082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1281a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guyvoid OpenGLRenderer::chooseBlending(bool blend, SkXfermode::Mode mode, 1282f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy ProgramDescription& description, bool swapSrcDst) { 128382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy blend = blend || mode != SkXfermode::kSrcOver_Mode; 128482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy if (blend) { 1285a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode < SkXfermode::kPlus_Mode) { 1286a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mCaches.blend) { 1287a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glEnable(GL_BLEND); 1288a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 128982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1290f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum sourceMode = swapSrcDst ? gBlendsSwap[mode].src : gBlends[mode].src; 1291f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum destMode = swapSrcDst ? gBlendsSwap[mode].dst : gBlends[mode].dst; 129282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1293a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (sourceMode != mCaches.lastSrcMode || destMode != mCaches.lastDstMode) { 1294a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glBlendFunc(sourceMode, destMode); 1295a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastSrcMode = sourceMode; 1296a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastDstMode = destMode; 1297a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1298a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1299a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // These blend modes are not supported by OpenGL directly and have 1300a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // to be implemented using shaders. Since the shader will perform 1301a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // the blending, turn blending off here 1302a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mExtensions.hasFramebufferFetch()) { 1303a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy description.framebufferMode = mode; 1304f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy description.swapSrcDst = swapSrcDst; 1305a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1306a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1307a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mCaches.blend) { 1308a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glDisable(GL_BLEND); 1309a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1310a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy blend = false; 131182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1312fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy } else if (mCaches.blend) { 131382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy glDisable(GL_BLEND); 131482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1315fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.blend = blend; 1316bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 1317bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1318889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guybool OpenGLRenderer::useProgram(Program* program) { 1319d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (!program->isInUse()) { 1320fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (mCaches.currentProgram != NULL) mCaches.currentProgram->remove(); 1321d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy program->use(); 1322fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram = program; 13236926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return false; 1324260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy } 13256926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return true; 1326260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy} 1327260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy 1328026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) { 1329ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy TextureVertex* v = &mMeshVertices[0]; 133082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v1); 133182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v1); 133282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v2); 133382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v2); 13348ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 13358ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 13368ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) { 13378ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (paint) { 1338a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 1339a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(paint->getXfermode(), mode); 1340a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 1341a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 1342a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = SkXfermode::kSrcOver_Mode; 1343a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1344a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1345a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = getXfermode(paint->getXfermode()); 13468ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 13478ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 13488ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Skia draws using the color's alpha channel if < 255 13498ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Otherwise, it uses the paint's alpha 13508ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy int color = paint->getColor(); 13518ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = (color >> 24) & 0xFF; 13528ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (*alpha == 255) { 13538ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = paint->getAlpha(); 13548ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 13558ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } else { 13568ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *mode = SkXfermode::kSrcOver_Mode; 13578ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = 255; 13588ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 1359026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy} 1360026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 1361a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain GuySkXfermode::Mode OpenGLRenderer::getXfermode(SkXfermode* mode) { 1362a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode == NULL) { 1363a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return SkXfermode::kSrcOver_Mode; 1364a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1365a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return mode->fMode; 1366a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy} 1367a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1368889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guyvoid OpenGLRenderer::bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT, GLuint textureUnit) { 1369889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glActiveTexture(gTextureUnits[textureUnit]); 1370ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 1371a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrapS); 1372a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrapT); 1373a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy} 1374a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy 13759d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 1376e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy}; // namespace android 1377