OpenGLRenderer.cpp revision 87a76578f76f4a6bceb187da6b7a01899ca0d85a
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> 2785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 2885bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy#include "OpenGLRenderer.h" 29e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 30e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guynamespace android { 319d5316e3f56d138504565ff311145ac01621dff4Romain Guynamespace uirenderer { 329d5316e3f56d138504565ff311145ac01621dff4Romain Guy 339d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 349d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Defines 359d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 369d5316e3f56d138504565ff311145ac01621dff4Romain Guy 3706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy#define REQUIRED_TEXTURE_UNITS_COUNT 3 3806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 39dda570201ac851dd85af3861f7e575721d3345daRomain Guy// Generates simple and textured vertices 40bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#define FV(x, y, u, v) { { x, y }, { u, v } } 419d5316e3f56d138504565ff311145ac01621dff4Romain Guy 429d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 439d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Globals 449d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 459d5316e3f56d138504565ff311145ac01621dff4Romain Guy 46026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// This array is never used directly but used as a memcpy source in the 47026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// OpenGLRenderer constructor 48ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const TextureVertex gMeshVertices[] = { 49c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 0.0f, 0.0f, 0.0f), 50c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 0.0f, 1.0f, 0.0f), 51c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 1.0f, 0.0f, 1.0f), 52c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 1.0f, 1.0f, 1.0f) 53bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy}; 54ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshStride = sizeof(TextureVertex); 55ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshCount = 4; 56026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 57889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy/** 58889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy * Structure mapping Skia xfermodes to OpenGL blending factors. 59889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy */ 60889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystruct Blender { 61889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy SkXfermode::Mode mode; 62889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum src; 63889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum dst; 64889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy}; // struct Blender 65889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 66026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// In this array, the index of each Blender equals the value of the first 67026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// entry. For instance, gBlends[1] == gBlends[SkXfermode::kSrc_Mode] 68026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const Blender gBlends[] = { 69026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 70026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrc_Mode, GL_ONE, GL_ZERO }, 71026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDst_Mode, GL_ZERO, GL_ONE }, 72026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 73026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 74026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcIn_Mode, GL_DST_ALPHA, GL_ZERO }, 75026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 76026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 77026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 78026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 79026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 80026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 81026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy}; 82e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 8387a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// This array contains the swapped version of each SkXfermode. For instance 8487a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// this array's SrcOver blending mode is actually DstOver. You can refer to 8587a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// createLayer() for more information on the purpose of this array. 86f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guystatic const Blender gBlendsSwap[] = { 87f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 88f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrc_Mode, GL_ZERO, GL_ONE }, 89f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDst_Mode, GL_ONE, GL_ZERO }, 90f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 91f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 92f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 93f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstIn_Mode, GL_DST_ALPHA, GL_ZERO }, 94f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 95f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 96f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 97f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 98f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 99f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy}; 100f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 101889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystatic const GLenum gTextureUnits[] = { 10206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE0, 10306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE1, 10406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE2 105d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy}; 106d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 107f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 108f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Constructors/destructor 109f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 110f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 111fb8b763f762ae21923c58d64caa729b012f40e05Romain GuyOpenGLRenderer::OpenGLRenderer(): mCaches(Caches::getInstance()) { 11285bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Create OpenGLRenderer"); 1139d5316e3f56d138504565ff311145ac01621dff4Romain Guy 11406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 115db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 1161e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 117026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 118ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy memcpy(mMeshVertices, gMeshVertices, sizeof(gMeshVertices)); 119ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy 120ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy mFirstSnapshot = new Snapshot; 121ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy 122ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy GLint maxTextureUnits; 123ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits); 124ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy if (maxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) { 125889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy LOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT); 126889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 127e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 128e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 12985bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain GuyOpenGLRenderer::~OpenGLRenderer() { 13085bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Destroy OpenGLRenderer"); 131e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 132e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 133f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 134f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Setup 135f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 136f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 13785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::setViewport(int width, int height) { 13808ae317c21ec3086b5017672bba87420cc38a407Romain Guy glViewport(0, 0, width, height); 139260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy mOrthoMatrix.loadOrtho(0, width, height, 0, -1, 1); 140bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 141bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mWidth = width; 142bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mHeight = height; 143e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 144e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 14585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::prepare() { 1468aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mFirstSnapshot, 1478aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag); 1488fb954263dd2f918ad339045cc6d82e346515599Romain Guy mSaveCount = 1; 149f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 150fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glViewport(0, 0, mWidth, mHeight); 151fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy 152d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy glDisable(GL_DITHER); 15308ae317c21ec3086b5017672bba87420cc38a407Romain Guy glDisable(GL_SCISSOR_TEST); 154bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 15508ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 15608ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClear(GL_COLOR_BUFFER_BIT); 157bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 15808ae317c21ec3086b5017672bba87420cc38a407Romain Guy glEnable(GL_SCISSOR_TEST); 159c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glScissor(0, 0, mWidth, mHeight); 160f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 161b82da65cb1601be504241f36778395cd6cb9f87bRomain Guy mSnapshot->setClip(0.0f, 0.0f, mWidth, mHeight); 162bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 163bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 164da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::acquireContext() { 165da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram) { 166da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram->isInUse()) { 167da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram->remove(); 168da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram = NULL; 169da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 170da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 171da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 172da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 173da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::releaseContext() { 174f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glViewport(0, 0, mWidth, mHeight); 175da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 176da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_SCISSOR_TEST); 177da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy setScissorFromClip(); 178da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 179f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glDisable(GL_DITHER); 180f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 181f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, 0); 182f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 183da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.blend) { 184da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_BLEND); 185da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glBlendFunc(mCaches.lastSrcMode, mCaches.lastDstMode); 186f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBlendEquation(GL_FUNC_ADD); 187da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } else { 188da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glDisable(GL_BLEND); 189da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 190da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 191da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 192f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 193f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// State management 194f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 195f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 196bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::getSaveCount() const { 1977ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSaveCount; 198bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 199bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 200bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::save(int flags) { 2018aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveSnapshot(flags); 202bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 203bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 204bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restore() { 2052542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (mSaveCount > 1) { 2062542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2077ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 208bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 209bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 210bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restoreToCount(int saveCount) { 2118fb954263dd2f918ad339045cc6d82e346515599Romain Guy if (saveCount < 1) saveCount = 1; 212bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2138fb954263dd2f918ad339045cc6d82e346515599Romain Guy while (mSaveCount > saveCount) { 2142542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2157ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 216bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 217bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2188aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guyint OpenGLRenderer::saveSnapshot(int flags) { 2198aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mSnapshot, flags); 2208fb954263dd2f918ad339045cc6d82e346515599Romain Guy return mSaveCount++; 221bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 222bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 223bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::restoreSnapshot() { 2247ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = mSnapshot->flags & Snapshot::kFlagClipSet; 225bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy bool restoreLayer = mSnapshot->flags & Snapshot::kFlagIsLayer; 226bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 227bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy sp<Snapshot> current = mSnapshot; 2287ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy sp<Snapshot> previous = mSnapshot->previous; 229bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2308b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSaveCount--; 2318b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSnapshot = previous; 2328b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 233bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (restoreLayer) { 234d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy composeLayer(current, previous); 235d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 236bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2372542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (restoreClip) { 2382542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setScissorFromClip(); 2398fb954263dd2f918ad339045cc6d82e346515599Romain Guy } 2402542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 2412542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy return restoreClip; 242d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 2435cbbce535744b89df5ecea95de21ee3733298260Romain Guy 244f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 245bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy// Layers 246bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 247bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 248bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayer(float left, float top, float right, float bottom, 249bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const SkPaint* p, int flags) { 2508aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy int count = saveSnapshot(flags); 251d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 252d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int alpha = 255; 253d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy SkXfermode::Mode mode; 254d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 255d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (p) { 256d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy alpha = p->getAlpha(); 257a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 258a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 259a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 260a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 261a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 262a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 263a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 264a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 265d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 266d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } else { 267d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 268d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 269d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 270f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, mode, flags); 271d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 272d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 273bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 274bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 275bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayerAlpha(float left, float top, float right, float bottom, 276bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int alpha, int flags) { 2778aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy if (alpha == 0xff) { 2788aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, NULL, flags); 2798b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } else { 2808aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkPaint paint; 2818aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy paint.setAlpha(alpha); 2828aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, &paint, flags); 2838b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 284d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 285bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2861c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 2871c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Layers are viewed by Skia are slightly different than layers in image editing 2881c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * programs (for instance.) When a layer is created, previously created layers 2891c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * and the frame buffer still receive every drawing command. For instance, if a 2901c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * layer is created and a shape intersecting the bounds of the layers and the 2911c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * framebuffer is draw, the shape will be drawn on both (unless the layer was 2921c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * created with the SkCanvas::kClipToLayer_SaveFlag flag.) 2931c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 2941c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * A way to implement layers is to create an FBO for each layer, backed by an RGBA 2951c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * texture. Unfortunately, this is inefficient as it requires every primitive to 2961c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be drawn n + 1 times, where n is the number of active layers. In practice this 2971c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * means, for every primitive: 2981c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Switch active frame buffer 2991c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Change viewport, clip and projection matrix 3001c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Issue the drawing 3011c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3021c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Switching rendering target n + 1 times per drawn primitive is extremely costly. 3031c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * To avoid this, layers are implemented in a different way here. 3041c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3051c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * This implementation relies on the frame buffer being at least RGBA 8888. When 3061c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * a layer is created, only a texture is created, not an FBO. The content of the 3071c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer contained within the layer's bounds is copied into this texture 30887a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * using glCopyTexImage2D(). The layer's region is then cleared(1) in the frame 3091c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * buffer and drawing continues as normal. This technique therefore treats the 3101c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer as a scratch buffer for the layers. 3111c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3121c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * To compose the layers back onto the frame buffer, each layer texture 3131c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * (containing the original frame buffer data) is drawn as a simple quad over 3141c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * the frame buffer. The trick is that the quad is set as the composition 3151c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * destination in the blending equation, and the frame buffer becomes the source 3161c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * of the composition. 3171c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3181c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Drawing layers with an alpha value requires an extra step before composition. 3191c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * An empty quad is drawn over the layer's region in the frame buffer. This quad 3201c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is drawn with the rgba color (0,0,0,alpha). The alpha value offered by the 3211c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * quad is used to multiply the colors in the frame buffer. This is achieved by 3221c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * changing the GL blend functions for the GL_FUNC_ADD blend equation to 3231c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * GL_ZERO, GL_SRC_ALPHA. 3241c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3251c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Because glCopyTexImage2D() can be slow, an alternative implementation might 3261c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be use to draw a single clipped layer. The implementation described above 3271c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is correct in every case. 32887a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * 32987a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * (1) The frame buffer is actually not cleared right away. To allow the GPU 33087a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * to potentially optimize series of calls to glCopyTexImage2D, the frame 33187a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * buffer is left untouched until the first drawing operation. Only when 33287a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * something actually gets drawn are the layers regions cleared. 3331c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 334d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guybool OpenGLRenderer::createLayer(sp<Snapshot> snapshot, float left, float top, 335d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy float right, float bottom, int alpha, SkXfermode::Mode mode,int flags) { 336d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy LAYER_LOGD("Requesting layer %fx%f", right - left, bottom - top); 337fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy LAYER_LOGD("Layer cache size = %d", mCaches.layerCache.getSize()); 338dda570201ac851dd85af3861f7e575721d3345daRomain Guy 339f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Window coordinates of the layer 3408aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy Rect bounds(left, top, right, bottom); 341f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mSnapshot->transform->mapRect(bounds); 3428aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy 3438411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy // Layers only make sense if they are in the framebuffer's bounds 3448411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy bounds.intersect(*mSnapshot->clipRect); 34581ab046a1127bd2ad397e6d1c6f8021b202a97ffRomain Guy if (bounds.isEmpty()) return false; 346dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3478411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy LayerSize size(bounds.getWidth(), bounds.getHeight()); 348f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy Layer* layer = mCaches.layerCache.get(size); 349f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy if (!layer) { 350f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy return false; 351bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 352bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 353dda570201ac851dd85af3861f7e575721d3345daRomain Guy layer->mode = mode; 354f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy layer->alpha = alpha; 3558aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy layer->layer.set(bounds); 356dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3578fb954263dd2f918ad339045cc6d82e346515599Romain Guy // Save the layer in the snapshot 3588fb954263dd2f918ad339045cc6d82e346515599Romain Guy snapshot->flags |= Snapshot::kFlagIsLayer; 359dda570201ac851dd85af3861f7e575721d3345daRomain Guy snapshot->layer = layer; 3601d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 361f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Copy the framebuffer into the layer 362f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBindTexture(GL_TEXTURE_2D, layer->texture); 363f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bounds.left, mHeight - bounds.bottom, 364f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy bounds.getWidth(), bounds.getHeight(), 0); 365f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 366f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (flags & SkCanvas::kClipToLayer_SaveFlag) { 3678694230ff25fa0a60e480d424843e56b718f0516Romain Guy if (mSnapshot->clipTransformed(bounds)) setScissorFromClip(); 368f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 369f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 3708694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Enqueue the buffer coordinates to clear the corresponding region later 3718694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.push(new Rect(bounds)); 372f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 373d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return true; 374bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 375bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 3761c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 3771c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Read the documentation of createLayer() before doing anything in this method. 3781c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 3791d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guyvoid OpenGLRenderer::composeLayer(sp<Snapshot> current, sp<Snapshot> previous) { 3801d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy if (!current->layer) { 3811d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LOGE("Attempting to compose a layer that does not exist"); 3821d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy return; 3831d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 3841d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 3851d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Restore the clip from the previous snapshot 3868aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *previous->clipRect; 387f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 3881d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 3891d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Layer* layer = current->layer; 3901d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy const Rect& rect = layer->layer; 3911d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 392f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (layer->alpha < 255) { 393f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawColorRect(rect.left, rect.top, rect.right, rect.bottom, 3941c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy layer->alpha << 24, SkXfermode::kDstIn_Mode, true); 395f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 396f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 397f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Layers are already drawn with a top-left origin, don't flip the texture 3988b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 1.0f, 1.0f, 0.0f); 3998b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 400f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawTextureMesh(rect.left, rect.top, rect.right, rect.bottom, layer->texture, 401f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 1.0f, layer->mode, layer->blend, &mMeshVertices[0].position[0], 402f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy &mMeshVertices[0].texture[0], NULL, 0, true, true); 4031d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4048b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 4058b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 4061d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LayerSize size(rect.getWidth(), rect.getHeight()); 4071d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Failing to add the layer to the cache should happen only if the 4081d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // layer is too large 409fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (!mCaches.layerCache.put(size, layer)) { 4101d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LAYER_LOGD("Deleting layer"); 4111d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4121d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy glDeleteTextures(1, &layer->texture); 4131d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4141d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy delete layer; 4151d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 4161d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy} 4171d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4188694230ff25fa0a60e480d424843e56b718f0516Romain Guyvoid OpenGLRenderer::clearLayerRegions() { 4198694230ff25fa0a60e480d424843e56b718f0516Romain Guy if (mLayers.size() == 0) return; 4208694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4218694230ff25fa0a60e480d424843e56b718f0516Romain Guy for (uint32_t i = 0; i < mLayers.size(); i++) { 4228694230ff25fa0a60e480d424843e56b718f0516Romain Guy Rect* bounds = mLayers.itemAt(i); 4238694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4248694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Clear the framebuffer where the layer will draw 4258694230ff25fa0a60e480d424843e56b718f0516Romain Guy glScissor(bounds->left, mHeight - bounds->bottom, 4268694230ff25fa0a60e480d424843e56b718f0516Romain Guy bounds->getWidth(), bounds->getHeight()); 4278694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 4288694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClear(GL_COLOR_BUFFER_BIT); 4298694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4308694230ff25fa0a60e480d424843e56b718f0516Romain Guy delete bounds; 4318694230ff25fa0a60e480d424843e56b718f0516Romain Guy } 4328694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.clear(); 4338694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4348694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Restore the clip 4358694230ff25fa0a60e480d424843e56b718f0516Romain Guy setScissorFromClip(); 4368694230ff25fa0a60e480d424843e56b718f0516Romain Guy} 4378694230ff25fa0a60e480d424843e56b718f0516Romain Guy 438bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 439f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Transforms 440f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 441f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 442f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::translate(float dx, float dy) { 4438aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->translate(dx, dy, 0.0f); 444f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 445f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 446f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::rotate(float degrees) { 4478aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->rotate(degrees, 0.0f, 0.0f, 1.0f); 448f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 449f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 450f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::scale(float sx, float sy) { 4518aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->scale(sx, sy, 1.0f); 452f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 453f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 454f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::setMatrix(SkMatrix* matrix) { 4558aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->load(*matrix); 456f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 457f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 458f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::getMatrix(SkMatrix* matrix) { 4598aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->copyTo(*matrix); 460f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 461f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 462f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::concatMatrix(SkMatrix* matrix) { 4637ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mat4 m(*matrix); 4648aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->multiply(m); 465f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 466f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 467f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 468f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Clipping 469f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 470f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 471bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::setScissorFromClip() { 4728aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *mSnapshot->clipRect; 473f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 4749d5316e3f56d138504565ff311145ac01621dff4Romain Guy} 4759d5316e3f56d138504565ff311145ac01621dff4Romain Guy 4769d5316e3f56d138504565ff311145ac01621dff4Romain Guyconst Rect& OpenGLRenderer::getClipBounds() { 477079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return mSnapshot->getLocalClip(); 478bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 479bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 480c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guybool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) { 4811d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Rect r(left, top, right, bottom); 4828aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->mapRect(r); 4838aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->intersects(r); 484c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 485c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy 486079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guybool OpenGLRenderer::clipRect(float left, float top, float right, float bottom, SkRegion::Op op) { 487079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bool clipped = mSnapshot->clip(left, top, right, bottom, op); 4887ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (clipped) { 4897ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 4907ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 4918aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->isEmpty(); 492e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 493e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 494f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 495f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Drawing 496f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 497f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 498c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, float left, float top, const SkPaint* paint) { 4996926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float right = left + bitmap->width(); 5006926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float bottom = top + bitmap->height(); 5016926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 5026926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 5036926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5046926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5056926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 50661c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 507fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5089cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 50922158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 51022158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 5116926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy drawTextureRect(left, top, right, bottom, texture, paint); 5128ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 5138ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 514f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, const SkMatrix* matrix, const SkPaint* paint) { 515f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy Rect r(0.0f, 0.0f, bitmap->width(), bitmap->height()); 516f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const mat4 transform(*matrix); 517f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy transform.mapRect(r); 518f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 5196926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(r.left, r.top, r.right, r.bottom)) { 5206926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5216926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5226926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 52361c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 524fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5259cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 52622158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 52722158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 52882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(r.left, r.top, r.right, r.bottom, texture, paint); 529f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy} 530f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 5318ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, 5328ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float srcLeft, float srcTop, float srcRight, float srcBottom, 5338ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float dstLeft, float dstTop, float dstRight, float dstBottom, 534f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const SkPaint* paint) { 5356926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(dstLeft, dstTop, dstRight, dstBottom)) { 5366926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5376926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5386926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 53961c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 540fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5419cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 54222158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 5438ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 5448ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float width = texture->width; 5458ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float height = texture->height; 546c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 5478ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u1 = srcLeft / width; 5488ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v1 = srcTop / height; 5498ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u2 = srcRight / width; 5508ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v2 = srcBottom / height; 551c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 5528ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(u1, v1, u2, v2); 5538ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 55482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(dstLeft, dstTop, dstRight, dstBottom, texture, paint); 5558ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 5568ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 557ce0537b80087a6225273040a987414b1dd081aa0Romain Guy} 558ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 559deba785f122a47915756ffd991f5540d952cf937Romain Guyvoid OpenGLRenderer::drawPatch(SkBitmap* bitmap, Res_png_9patch* patch, 560deba785f122a47915756ffd991f5540d952cf937Romain Guy float left, float top, float right, float bottom, const SkPaint* paint) { 5616926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 5626926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5636926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5646926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 56561c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 566fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5679cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 56822158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 569f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 570f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy int alpha; 571f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy SkXfermode::Mode mode; 572f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy getAlphaAndMode(paint, &alpha, &mode); 573f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 574fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy Patch* mesh = mCaches.patchCache.get(patch); 575fb5e23c327cd5f8f93d1eaa7c10f34d6fd3efb6cRomain Guy mesh->updateVertices(bitmap, left, top, right, bottom, 576fb5e23c327cd5f8f93d1eaa7c10f34d6fd3efb6cRomain Guy &patch->xDivs[0], &patch->yDivs[0], patch->numXDivs, patch->numYDivs); 5778411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy mesh->dump(); 578f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 579f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // Specify right and bottom as +1.0f from left/top to prevent scaling since the 580f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // patch mesh already defines the final size 581a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, left + 1.0f, top + 1.0f, texture->id, alpha / 255.0f, 582a979474f15b454c8e2963f239a3770e200bb227cRomain Guy mode, texture->blend, &mesh->vertices[0].position[0], 58316202fc9745e9b11db089ebc8f40119d13732016Romain Guy &mesh->vertices[0].texture[0], mesh->indices, mesh->indicesCount); 584f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 585f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 58685bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) { 5878aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *mSnapshot->clipRect; 5883d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode, true); 589c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 5909d5316e3f56d138504565ff311145ac01621dff4Romain Guy 591bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawRect(float left, float top, float right, float bottom, const SkPaint* p) { 5926926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 5936926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5946926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5956926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 596026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy SkXfermode::Mode mode; 597a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 598a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 599a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 600a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 601a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 602a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 603a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 604a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 605026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 606026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 607026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Skia draws using the color's alpha channel if < 255 608026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Otherwise, it uses the paint's alpha 609026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color = p->getColor(); 610d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (((color >> 24) & 0xff) == 255) { 611026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy color |= p->getAlpha() << 24; 612026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 613026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 614026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(left, top, right, bottom, color, mode); 615c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 6169d5316e3f56d138504565ff311145ac01621dff4Romain Guy 617e8e62a4a032a80409114a37908b5f18ab0080848Romain Guyvoid OpenGLRenderer::drawText(const char* text, int bytesCount, int count, 618e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy float x, float y, SkPaint* paint) { 619f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (text == NULL || count == 0 || (paint->getAlpha() == 0 && paint->getXfermode() == NULL)) { 620e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy return; 621e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 622f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy paint->setAntiAlias(true); 623e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 624a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy float length = -1.0f; 625e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy switch (paint->getTextAlign()) { 626e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kCenter_Align: 627e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 628e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length / 2.0f; 629e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 630e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kRight_Align: 631e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 632e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length; 633e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 634e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy default: 635e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 636e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 637e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 638694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy int alpha; 639694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy SkXfermode::Mode mode; 640694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy getAlphaAndMode(paint, &alpha, &mode); 641694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 6422542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy uint32_t color = paint->getColor(); 6432542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = alpha / 255.0f; 6442542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 6452542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 6462542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 6472542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 648b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy FontRenderer& fontRenderer = mCaches.fontRenderer.getFontRenderer(paint); 649b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.setFont(paint, SkTypeface::UniqueID(paint->getTypeface()), 650fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy paint->getTextSize()); 6511e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy if (mHasShadow) { 6521e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy glActiveTexture(gTextureUnits[0]); 653b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy mCaches.dropShadowCache.setFontRenderer(fontRenderer); 654fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const ShadowTexture* shadow = mCaches.dropShadowCache.get(paint, text, bytesCount, 6551e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy count, mShadowRadius); 6561e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy const AutoTexture autoCleanup(shadow); 6570a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 6582542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setupShadow(shadow, x, y, mode, a); 6590a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 6600a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 6610a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 662fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 6631e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy } 6641e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 66506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 666db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 66706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 668b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy setupTextureAlpha8(fontRenderer.getTexture(), 0, 0, textureUnit, x, y, r, g, b, a, 6690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mode, false, true); 67006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 67109147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy const Rect& clip = mSnapshot->getLocalClip(); 6728694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 673b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.renderText(paint, &clip, text, 0, bytesCount, count, x, y); 674694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 675694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); 676fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 677a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy 6780a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawTextDecorations(text, bytesCount, length, x, y, paint); 679694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy} 680694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 6817fbcc0492fca03857e3c45064f4aa040af817d55Romain Guyvoid OpenGLRenderer::drawPath(SkPath* path, SkPaint* paint) { 6827fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy GLuint textureUnit = 0; 6837fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 6847fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 685fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const PathTexture* texture = mCaches.pathCache.get(path, paint); 6869cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 68722158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 6887fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 6898b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float x = texture->left - texture->offset; 6908b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float y = texture->top - texture->offset; 6918b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 6928b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy if (quickReject(x, y, x + texture->width, y + texture->height)) { 6938b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy return; 6948b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 6958b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 6967fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy int alpha; 6977fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy SkXfermode::Mode mode; 6987fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy getAlphaAndMode(paint, &alpha, &mode); 6997fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7007fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy uint32_t color = paint->getColor(); 7017fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat a = alpha / 255.0f; 7027fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 7037fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 7047fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 7057fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7060a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, x, y, r, g, b, a, mode, true, true); 7070a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7088694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 7098694230ff25fa0a60e480d424843e56b718f0516Romain Guy 7100a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 7110a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 712fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 7137fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy} 7147fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7156926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 716d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy// Shaders 717d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 718d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 719d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guyvoid OpenGLRenderer::resetShader() { 72006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 72106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy} 72206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 72306f96e2652e4855b6520ad9dd70583677605b79aRomain Guyvoid OpenGLRenderer::setupShader(SkiaShader* shader) { 72406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = shader; 72506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 726fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->set(&mCaches.textureCache, &mCaches.gradientCache); 72706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy } 7287fac2e18339f765320d759e8d4c090f92431959eRomain Guy} 7297fac2e18339f765320d759e8d4c090f92431959eRomain Guy 730d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 731db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy// Color filters 732db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 733db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 734db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::resetColorFilter() { 735db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 736db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 737db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 738db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::setupColorFilter(SkiaColorFilter* filter) { 739db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = filter; 740db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 741db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 742db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 7431e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy// Drop shadow 7441e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 7451e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 7461e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::resetShadow() { 7471e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 7481e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 7491e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 7501e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::setupShadow(float radius, float dx, float dy, int color) { 7511e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = true; 7521e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowRadius = radius; 7531e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDx = dx; 7541e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDy = dy; 7551e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowColor = color; 7561e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 7571e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 7581e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 7596926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy// Drawing implementation 7606926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 7616926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 7620a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupShadow(const ShadowTexture* texture, float x, float y, 7632542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy SkXfermode::Mode mode, float alpha) { 7640a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sx = x - texture->left + mShadowDx; 7650a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sy = y - texture->top + mShadowDy; 7660a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7672542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const int shadowAlpha = ((mShadowColor >> 24) & 0xFF); 7682542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = shadowAlpha < 255 ? shadowAlpha / 255.0f : alpha; 7690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat r = a * ((mShadowColor >> 16) & 0xFF) / 255.0f; 7700a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat g = a * ((mShadowColor >> 8) & 0xFF) / 255.0f; 7710a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat b = a * ((mShadowColor ) & 0xFF) / 255.0f; 7720a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7730a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint textureUnit = 0; 7740a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, sx, sy, r, g, b, a, mode, true, false); 7750a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 7760a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7770a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(const Texture* texture, GLuint& textureUnit, 7780a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, float r, float g, float b, float a, SkXfermode::Mode mode, 7790a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bool transforms, bool applyFilters) { 7800a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture->id, texture->width, texture->height, textureUnit, 7810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy x, y, r, g, b, a, mode, transforms, applyFilters); 7820a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 7830a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 7850a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 7860a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters) { 7870a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Describe the required shaders 7880a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy ProgramDescription description; 7890a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasTexture = true; 7900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasAlpha8Texture = true; 7910a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7920a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 7930a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 7940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mShader->describe(description, mExtensions); 7950a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 7960a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 7970a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mColorFilter->describe(description, mExtensions); 7980a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 7990a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8000a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 801a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Setup the blending mode 802a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy chooseBlending(true, mode, description); 803a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 8040a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Build and use the appropriate shader 805fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 8060a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8070a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, textureUnit); 808fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), textureUnit); 8090a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 810fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 8110a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glEnableVertexAttribArray(texCoordsSlot); 8120a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8130a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes 814fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 8150a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy gMeshStride, &mMeshVertices[0].position[0]); 8160a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, 8170a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy gMeshStride, &mMeshVertices[0].texture[0]); 8180a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8190a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup uniforms 8200a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (transforms) { 8210a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadTranslate(x, y, 0.0f); 8220a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.scale(width, height, 1.0f); 8230a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } else { 8240a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadIdentity(); 8250a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8268aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 827fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, r, g, b, a); 8280a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8290a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy textureUnit++; 8300a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 8310a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes and uniforms required by the shaders 8320a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 833fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 8340a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8350a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 836fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 8370a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8380a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 8400a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 841f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy// Same values used by Skia 8420a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdStrikeThru_Offset (-6.0f / 21.0f) 8430a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Offset (1.0f / 9.0f) 8440a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Thickness (1.0f / 18.0f) 8450a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8460a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::drawTextDecorations(const char* text, int bytesCount, float length, 8470a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, SkPaint* paint) { 8480a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Handle underline and strike-through 8490a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy uint32_t flags = paint->getFlags(); 8500a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) { 8510a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float underlineWidth = length; 8520a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // If length is > 0.0f, we already measured the text for the text alignment 8530a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (length <= 0.0f) { 8540a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy underlineWidth = paint->measureText(text, bytesCount); 8550a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8560a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8570a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float offsetX = 0; 8580a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy switch (paint->getTextAlign()) { 8590a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kCenter_Align: 8600a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth * 0.5f; 8610a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 8620a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kRight_Align: 8630a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth; 8640a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 8650a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy default: 8660a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 8670a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8680a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (underlineWidth > 0.0f) { 8700a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float textSize = paint->getTextSize(); 8710a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float height = textSize * kStdUnderline_Thickness; 8720a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8730a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float left = x - offsetX; 8740a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float top = 0.0f; 8750a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float right = left + underlineWidth; 8760a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float bottom = 0.0f; 8770a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8780a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kUnderlineText_Flag) { 8790a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdUnderline_Offset; 8800a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bottom = top + height; 8810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawRect(left, top, right, bottom, paint); 8820a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8830a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kStrikeThruText_Flag) { 8850a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdStrikeThru_Offset; 8860a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bottom = top + height; 8870a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawRect(left, top, right, bottom, paint); 8880a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8890a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8910a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 8920a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 893026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, 8941c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy int color, SkXfermode::Mode mode, bool ignoreTransform) { 8958694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 8968694230ff25fa0a60e480d424843e56b718f0516Romain Guy 897d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // If a shader is set, preserve only the alpha 89806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 899d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy color |= 0x00ffffff; 900d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 901d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 902d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // Render using pre-multiplied alpha 903026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const int alpha = (color >> 24) & 0xFF; 904d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy const GLfloat a = alpha / 255.0f; 905c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 906c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 907c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 908c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 90906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 9109d5316e3f56d138504565ff311145ac01621dff4Romain Guy 91106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Describe the required shaders 912889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 91306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 91406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader->describe(description, mExtensions); 915c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 916db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 917db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 918db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 919c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 9201c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy // Setup the blending mode 9211c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy chooseBlending(alpha < 255 || (mShader && mShader->blend()), mode, description); 922a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 92306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Build and use the appropriate shader 924fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 925c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 92606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes 927fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 928ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, &mMeshVertices[0].position[0]); 929c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 93006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup uniforms 931889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.loadTranslate(left, top, 0.0f); 932889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 93306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (!ignoreTransform) { 9348aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 935889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } else { 93606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mat4 identity; 937fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, identity); 938889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 939fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, r, g, b, a); 940d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 94106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes and uniforms required by the shaders 94206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 943fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 944d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 945db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 946fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 947db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 948d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 94906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Draw the mesh 950889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 951d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy} 952d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 95382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 954a979474f15b454c8e2963f239a3770e200bb227cRomain Guy const Texture* texture, const SkPaint* paint) { 95582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy int alpha; 95682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy SkXfermode::Mode mode; 95782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy getAlphaAndMode(paint, &alpha, &mode); 95882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 959a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, right, bottom, texture->id, alpha / 255.0f, mode, texture->blend, 960ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], NULL); 96185bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy} 96285bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 963bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 964a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend) { 965a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, right, bottom, texture, alpha, mode, blend, 966ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], NULL); 967f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 968f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 969f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guyvoid OpenGLRenderer::drawTextureMesh(float left, float top, float right, float bottom, 970a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend, 971f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLvoid* vertices, GLvoid* texCoords, GLvoid* indices, GLsizei elementsCount, 972f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy bool swapSrcDst, bool ignoreTransform) { 9738694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 9748694230ff25fa0a60e480d424843e56b718f0516Romain Guy 975889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 976889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasTexture = true; 977db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 978db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 979db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 980889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 981bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.loadTranslate(left, top, 0.0f); 982bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.scale(right - left, bottom - top, 1.0f); 983bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 984f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy chooseBlending(blend || alpha < 1.0f, mode, description, swapSrcDst); 985a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 986fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 987f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (!ignoreTransform) { 988f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 989f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } else { 990f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mat4 m; 991f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, m); 992f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 993bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 994889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Texture 99506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, 0); 996fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), 0); 997c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 998a979474f15b454c8e2963f239a3770e200bb227cRomain Guy // Always premultiplied 999fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, alpha, alpha, alpha, alpha); 1000bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1001889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Mesh 1002fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 1003889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glEnableVertexAttribArray(texCoordsSlot); 1004fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1005ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, vertices); 1006889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, gMeshStride, texCoords); 1007bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1008db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy // Color filter 1009db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1010fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1011db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1012db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 1013f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy if (!indices) { 1014ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 1015f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy } else { 1016f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy glDrawElements(GL_TRIANGLES, elementsCount, GL_UNSIGNED_SHORT, indices); 1017f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy } 1018889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDisableVertexAttribArray(texCoordsSlot); 101982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy} 102082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1021a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guyvoid OpenGLRenderer::chooseBlending(bool blend, SkXfermode::Mode mode, 1022f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy ProgramDescription& description, bool swapSrcDst) { 102382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy blend = blend || mode != SkXfermode::kSrcOver_Mode; 102482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy if (blend) { 1025a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode < SkXfermode::kPlus_Mode) { 1026a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mCaches.blend) { 1027a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glEnable(GL_BLEND); 1028a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 102982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1030f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum sourceMode = swapSrcDst ? gBlendsSwap[mode].src : gBlends[mode].src; 1031f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum destMode = swapSrcDst ? gBlendsSwap[mode].dst : gBlends[mode].dst; 103282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1033a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (sourceMode != mCaches.lastSrcMode || destMode != mCaches.lastDstMode) { 1034a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glBlendFunc(sourceMode, destMode); 1035a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastSrcMode = sourceMode; 1036a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastDstMode = destMode; 1037a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1038a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1039a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // These blend modes are not supported by OpenGL directly and have 1040a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // to be implemented using shaders. Since the shader will perform 1041a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // the blending, turn blending off here 1042a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mExtensions.hasFramebufferFetch()) { 1043a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy description.framebufferMode = mode; 1044f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy description.swapSrcDst = swapSrcDst; 1045a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1046a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1047a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mCaches.blend) { 1048a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glDisable(GL_BLEND); 1049a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1050a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy blend = false; 105182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1052fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy } else if (mCaches.blend) { 105382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy glDisable(GL_BLEND); 105482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1055fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.blend = blend; 1056bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 1057bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1058889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guybool OpenGLRenderer::useProgram(Program* program) { 1059d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (!program->isInUse()) { 1060fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (mCaches.currentProgram != NULL) mCaches.currentProgram->remove(); 1061d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy program->use(); 1062fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram = program; 10636926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return false; 1064260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy } 10656926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return true; 1066260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy} 1067260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy 1068026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) { 1069ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy TextureVertex* v = &mMeshVertices[0]; 107082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v1); 107182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v1); 107282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v2); 107382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v2); 10748ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 10758ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 10768ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) { 10778ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (paint) { 1078a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 1079a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(paint->getXfermode(), mode); 1080a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 1081a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 1082a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = SkXfermode::kSrcOver_Mode; 1083a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1084a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1085a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = getXfermode(paint->getXfermode()); 10868ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 10878ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 10888ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Skia draws using the color's alpha channel if < 255 10898ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Otherwise, it uses the paint's alpha 10908ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy int color = paint->getColor(); 10918ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = (color >> 24) & 0xFF; 10928ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (*alpha == 255) { 10938ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = paint->getAlpha(); 10948ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 10958ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } else { 10968ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *mode = SkXfermode::kSrcOver_Mode; 10978ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = 255; 10988ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 1099026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy} 1100026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 1101a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain GuySkXfermode::Mode OpenGLRenderer::getXfermode(SkXfermode* mode) { 1102a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode == NULL) { 1103a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return SkXfermode::kSrcOver_Mode; 1104a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1105a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return mode->fMode; 1106a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy} 1107a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1108889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guyvoid OpenGLRenderer::bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT, GLuint textureUnit) { 1109889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glActiveTexture(gTextureUnits[textureUnit]); 1110ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 1111a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrapS); 1112a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrapT); 1113a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy} 1114a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy 11159d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 1116e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy}; // namespace android 1117