OpenGLRenderer.cpp revision e8cb9c14309b0f01c0159efdf9a7198f44a62642
1e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy/* 2e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * Copyright (C) 2010 The Android Open Source Project 3e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * 4e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * Licensed under the Apache License, Version 2.0 (the "License"); 5e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * you may not use this file except in compliance with the License. 6e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * You may obtain a copy of the License at 7e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * 8e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * http://www.apache.org/licenses/LICENSE-2.0 9e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * 10e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * Unless required by applicable law or agreed to in writing, software 11e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * distributed under the License is distributed on an "AS IS" BASIS, 12e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * See the License for the specific language governing permissions and 14e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * limitations under the License. 15e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy */ 16e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 1785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy#define LOG_TAG "OpenGLRenderer" 18e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 19e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy#include <stdlib.h> 20e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy#include <stdint.h> 21e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy#include <sys/types.h> 22e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 23bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#include <SkCanvas.h> 24694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy#include <SkTypeface.h> 255cbbce535744b89df5ecea95de21ee3733298260Romain Guy 265cbbce535744b89df5ecea95de21ee3733298260Romain Guy#include <utils/Log.h> 27e2d345ea67e2960b37bfdc0fc8626d1bfa747404Romain Guy#include <utils/StopWatch.h> 2885bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 2985bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy#include "OpenGLRenderer.h" 30e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 31e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guynamespace android { 329d5316e3f56d138504565ff311145ac01621dff4Romain Guynamespace uirenderer { 339d5316e3f56d138504565ff311145ac01621dff4Romain Guy 349d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 359d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Defines 369d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 379d5316e3f56d138504565ff311145ac01621dff4Romain Guy 3806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy#define REQUIRED_TEXTURE_UNITS_COUNT 3 3906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 40dda570201ac851dd85af3861f7e575721d3345daRomain Guy// Generates simple and textured vertices 41bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#define FV(x, y, u, v) { { x, y }, { u, v } } 429d5316e3f56d138504565ff311145ac01621dff4Romain Guy 43759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy#define RAD_TO_DEG (180.0f / 3.14159265f) 44759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy#define MIN_ANGLE 0.001f 45759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 469d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 479d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Globals 489d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 499d5316e3f56d138504565ff311145ac01621dff4Romain Guy 50026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// This array is never used directly but used as a memcpy source in the 51026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// OpenGLRenderer constructor 52ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const TextureVertex gMeshVertices[] = { 53c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 0.0f, 0.0f, 0.0f), 54c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 0.0f, 1.0f, 0.0f), 55c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 1.0f, 0.0f, 1.0f), 56c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 1.0f, 1.0f, 1.0f) 57bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy}; 58ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshStride = sizeof(TextureVertex); 59ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshCount = 4; 60026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 61889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy/** 62889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy * Structure mapping Skia xfermodes to OpenGL blending factors. 63889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy */ 64889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystruct Blender { 65889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy SkXfermode::Mode mode; 66889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum src; 67889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum dst; 68889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy}; // struct Blender 69889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 70026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// In this array, the index of each Blender equals the value of the first 71026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// entry. For instance, gBlends[1] == gBlends[SkXfermode::kSrc_Mode] 72026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const Blender gBlends[] = { 73026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 74026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrc_Mode, GL_ONE, GL_ZERO }, 75026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDst_Mode, GL_ZERO, GL_ONE }, 76026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 77026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 78026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcIn_Mode, GL_DST_ALPHA, GL_ZERO }, 79026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 80026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 81026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 82026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 83026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 84026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 85026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy}; 86e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 8787a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// This array contains the swapped version of each SkXfermode. For instance 8887a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// this array's SrcOver blending mode is actually DstOver. You can refer to 8987a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// createLayer() for more information on the purpose of this array. 90f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guystatic const Blender gBlendsSwap[] = { 91f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 92f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrc_Mode, GL_ZERO, GL_ONE }, 93f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDst_Mode, GL_ONE, GL_ZERO }, 94f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 95f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 96f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 97f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstIn_Mode, GL_DST_ALPHA, GL_ZERO }, 98f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 99f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 100f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 101f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 102f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 103f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy}; 104f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 105889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystatic const GLenum gTextureUnits[] = { 10606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE0, 10706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE1, 10806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE2 109d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy}; 110d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 111f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 112f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Constructors/destructor 113f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 114f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 115fb8b763f762ae21923c58d64caa729b012f40e05Romain GuyOpenGLRenderer::OpenGLRenderer(): mCaches(Caches::getInstance()) { 11685bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Create OpenGLRenderer"); 1179d5316e3f56d138504565ff311145ac01621dff4Romain Guy 11806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 119db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 1201e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 121026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 122ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy memcpy(mMeshVertices, gMeshVertices, sizeof(gMeshVertices)); 123ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy 124ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy mFirstSnapshot = new Snapshot; 125ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy 126ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy GLint maxTextureUnits; 127ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits); 128ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy if (maxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) { 129889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy LOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT); 130889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 131b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy 132b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 133e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 134e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 13585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain GuyOpenGLRenderer::~OpenGLRenderer() { 13685bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Destroy OpenGLRenderer"); 13729d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy // The context has already been destroyed at this point, do not call 13829d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy // GL APIs. All GL state should be kept in Caches.h 139e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 140e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 141f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 142f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Setup 143f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 144f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 14585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::setViewport(int width, int height) { 14608ae317c21ec3086b5017672bba87420cc38a407Romain Guy glViewport(0, 0, width, height); 147260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy mOrthoMatrix.loadOrtho(0, width, height, 0, -1, 1); 148bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 149bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mWidth = width; 150bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mHeight = height; 151e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 152e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 15385bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::prepare() { 1548aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mFirstSnapshot, 1558aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag); 1568fb954263dd2f918ad339045cc6d82e346515599Romain Guy mSaveCount = 1; 157f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 158fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glViewport(0, 0, mWidth, mHeight); 159fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy 160d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy glDisable(GL_DITHER); 16108ae317c21ec3086b5017672bba87420cc38a407Romain Guy glDisable(GL_SCISSOR_TEST); 162bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 16308ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 16408ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClear(GL_COLOR_BUFFER_BIT); 165bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 16608ae317c21ec3086b5017672bba87420cc38a407Romain Guy glEnable(GL_SCISSOR_TEST); 167c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glScissor(0, 0, mWidth, mHeight); 168f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 169b82da65cb1601be504241f36778395cd6cb9f87bRomain Guy mSnapshot->setClip(0.0f, 0.0f, mWidth, mHeight); 170bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 171bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 172b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guyvoid OpenGLRenderer::finish() { 173b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy#if DEBUG_OPENGL 174b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy GLenum status = GL_NO_ERROR; 175b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy while ((status = glGetError()) != GL_NO_ERROR) { 176b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy LOGD("GL error from OpenGLRenderer: 0x%x", status); 177b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 178b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy#endif 179b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy} 180b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy 181da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::acquireContext() { 182da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram) { 183da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram->isInUse()) { 184da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram->remove(); 185da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram = NULL; 186da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 187da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 188da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 189da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 190da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::releaseContext() { 191f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glViewport(0, 0, mWidth, mHeight); 192da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 193da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_SCISSOR_TEST); 194da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy setScissorFromClip(); 195da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 196f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glDisable(GL_DITHER); 197f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 198f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, 0); 199f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 200da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.blend) { 201da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_BLEND); 202da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glBlendFunc(mCaches.lastSrcMode, mCaches.lastDstMode); 203f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBlendEquation(GL_FUNC_ADD); 204da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } else { 205da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glDisable(GL_BLEND); 206da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 207da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 208da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 209f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 210f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// State management 211f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 212f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 213bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::getSaveCount() const { 2147ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSaveCount; 215bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 216bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 217bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::save(int flags) { 2188aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveSnapshot(flags); 219bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 220bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 221bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restore() { 2222542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (mSaveCount > 1) { 2232542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2247ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 225bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 226bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 227bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restoreToCount(int saveCount) { 2288fb954263dd2f918ad339045cc6d82e346515599Romain Guy if (saveCount < 1) saveCount = 1; 229bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2308fb954263dd2f918ad339045cc6d82e346515599Romain Guy while (mSaveCount > saveCount) { 2312542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2327ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 233bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 234bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2358aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guyint OpenGLRenderer::saveSnapshot(int flags) { 2368aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mSnapshot, flags); 2378fb954263dd2f918ad339045cc6d82e346515599Romain Guy return mSaveCount++; 238bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 239bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 240bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::restoreSnapshot() { 2417ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = mSnapshot->flags & Snapshot::kFlagClipSet; 242bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy bool restoreLayer = mSnapshot->flags & Snapshot::kFlagIsLayer; 243bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 244bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy sp<Snapshot> current = mSnapshot; 2457ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy sp<Snapshot> previous = mSnapshot->previous; 246bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2478b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSaveCount--; 2488b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSnapshot = previous; 2498b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 250bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (restoreLayer) { 251d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy composeLayer(current, previous); 252d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 253bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2542542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (restoreClip) { 2552542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setScissorFromClip(); 2568fb954263dd2f918ad339045cc6d82e346515599Romain Guy } 2572542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 2582542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy return restoreClip; 259d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 2605cbbce535744b89df5ecea95de21ee3733298260Romain Guy 261f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 262bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy// Layers 263bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 264bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 265bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayer(float left, float top, float right, float bottom, 266bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const SkPaint* p, int flags) { 2678aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy int count = saveSnapshot(flags); 268d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 269d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int alpha = 255; 270d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy SkXfermode::Mode mode; 271d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 272d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (p) { 273d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy alpha = p->getAlpha(); 274a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 275a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 276a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 277a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 278a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 279a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 280a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 281a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 282d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 283d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } else { 284d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 285d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 286d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 287f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, mode, flags); 288d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 289d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 290bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 291bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 292bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayerAlpha(float left, float top, float right, float bottom, 293bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int alpha, int flags) { 2948aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy if (alpha == 0xff) { 2958aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, NULL, flags); 2968b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } else { 2978aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkPaint paint; 2988aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy paint.setAlpha(alpha); 2998aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, &paint, flags); 3008b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 301d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 302bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 3031c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 3041c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Layers are viewed by Skia are slightly different than layers in image editing 3051c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * programs (for instance.) When a layer is created, previously created layers 3061c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * and the frame buffer still receive every drawing command. For instance, if a 3071c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * layer is created and a shape intersecting the bounds of the layers and the 3081c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * framebuffer is draw, the shape will be drawn on both (unless the layer was 3091c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * created with the SkCanvas::kClipToLayer_SaveFlag flag.) 3101c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3111c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * A way to implement layers is to create an FBO for each layer, backed by an RGBA 3121c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * texture. Unfortunately, this is inefficient as it requires every primitive to 3131c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be drawn n + 1 times, where n is the number of active layers. In practice this 3141c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * means, for every primitive: 3151c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Switch active frame buffer 3161c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Change viewport, clip and projection matrix 3171c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Issue the drawing 3181c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3191c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Switching rendering target n + 1 times per drawn primitive is extremely costly. 3201c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * To avoid this, layers are implemented in a different way here. 3211c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3221c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * This implementation relies on the frame buffer being at least RGBA 8888. When 3231c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * a layer is created, only a texture is created, not an FBO. The content of the 3241c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer contained within the layer's bounds is copied into this texture 32587a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * using glCopyTexImage2D(). The layer's region is then cleared(1) in the frame 3261c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * buffer and drawing continues as normal. This technique therefore treats the 3271c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer as a scratch buffer for the layers. 3281c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3291c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * To compose the layers back onto the frame buffer, each layer texture 3301c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * (containing the original frame buffer data) is drawn as a simple quad over 3311c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * the frame buffer. The trick is that the quad is set as the composition 3321c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * destination in the blending equation, and the frame buffer becomes the source 3331c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * of the composition. 3341c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3351c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Drawing layers with an alpha value requires an extra step before composition. 3361c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * An empty quad is drawn over the layer's region in the frame buffer. This quad 3371c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is drawn with the rgba color (0,0,0,alpha). The alpha value offered by the 3381c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * quad is used to multiply the colors in the frame buffer. This is achieved by 3391c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * changing the GL blend functions for the GL_FUNC_ADD blend equation to 3401c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * GL_ZERO, GL_SRC_ALPHA. 3411c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3421c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Because glCopyTexImage2D() can be slow, an alternative implementation might 3431c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be use to draw a single clipped layer. The implementation described above 3441c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is correct in every case. 34587a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * 34687a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * (1) The frame buffer is actually not cleared right away. To allow the GPU 34787a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * to potentially optimize series of calls to glCopyTexImage2D, the frame 34887a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * buffer is left untouched until the first drawing operation. Only when 34987a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * something actually gets drawn are the layers regions cleared. 3501c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 351d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guybool OpenGLRenderer::createLayer(sp<Snapshot> snapshot, float left, float top, 352d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy float right, float bottom, int alpha, SkXfermode::Mode mode,int flags) { 353d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy LAYER_LOGD("Requesting layer %fx%f", right - left, bottom - top); 354fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy LAYER_LOGD("Layer cache size = %d", mCaches.layerCache.getSize()); 355dda570201ac851dd85af3861f7e575721d3345daRomain Guy 356f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Window coordinates of the layer 3578aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy Rect bounds(left, top, right, bottom); 358f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mSnapshot->transform->mapRect(bounds); 3598aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy 3608411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy // Layers only make sense if they are in the framebuffer's bounds 3618411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy bounds.intersect(*mSnapshot->clipRect); 362bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy bounds.snapToPixelBoundaries(); 363bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy 364b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy if (bounds.isEmpty() || bounds.getWidth() > mMaxTextureSize || 365b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy bounds.getHeight() > mMaxTextureSize) { 366b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy return false; 367b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 368dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3690bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy glActiveTexture(GL_TEXTURE0); 3700bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy 3718411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy LayerSize size(bounds.getWidth(), bounds.getHeight()); 372f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy Layer* layer = mCaches.layerCache.get(size); 373f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy if (!layer) { 374f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy return false; 375bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 376bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 377dda570201ac851dd85af3861f7e575721d3345daRomain Guy layer->mode = mode; 378f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy layer->alpha = alpha; 3798aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy layer->layer.set(bounds); 380dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3818fb954263dd2f918ad339045cc6d82e346515599Romain Guy // Save the layer in the snapshot 3828fb954263dd2f918ad339045cc6d82e346515599Romain Guy snapshot->flags |= Snapshot::kFlagIsLayer; 383dda570201ac851dd85af3861f7e575721d3345daRomain Guy snapshot->layer = layer; 3841d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 385f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Copy the framebuffer into the layer 386f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBindTexture(GL_TEXTURE_2D, layer->texture); 38738c85b907a478af96d71b9a5df5a2066b8475311Romain Guy 3880bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy // TODO: Workaround for b/3054204 3890bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bounds.left, mHeight - bounds.bottom, 3900bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy bounds.getWidth(), bounds.getHeight(), 0); 3910bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy 3920bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy // TODO: Waiting for b/3054204 to be fixed 3930bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy// if (layer->empty) { 3940bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy// glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bounds.left, mHeight - bounds.bottom, 3950bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy// bounds.getWidth(), bounds.getHeight(), 0); 3960bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy// layer->empty = false; 3970bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy// } else { 3980bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy// glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bounds.left, mHeight - bounds.bottom, 3990bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy// bounds.getWidth(), bounds.getHeight()); 4000bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy// } 4010bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy 4020bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy if (flags & SkCanvas::kClipToLayer_SaveFlag && mSnapshot->clipTransformed(bounds)) { 4030bb5667b4ef91fefd0500fae0186789d15d54e0eRomain Guy setScissorFromClip(); 404f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 405f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 4068694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Enqueue the buffer coordinates to clear the corresponding region later 4078694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.push(new Rect(bounds)); 408f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 409d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return true; 410bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 411bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 4121c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 4131c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Read the documentation of createLayer() before doing anything in this method. 4141c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 4151d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guyvoid OpenGLRenderer::composeLayer(sp<Snapshot> current, sp<Snapshot> previous) { 4161d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy if (!current->layer) { 4171d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LOGE("Attempting to compose a layer that does not exist"); 4181d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy return; 4191d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 4201d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4211d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Restore the clip from the previous snapshot 4228aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *previous->clipRect; 423f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 4241d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4251d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Layer* layer = current->layer; 4261d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy const Rect& rect = layer->layer; 4271d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 428f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (layer->alpha < 255) { 429f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawColorRect(rect.left, rect.top, rect.right, rect.bottom, 4301c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy layer->alpha << 24, SkXfermode::kDstIn_Mode, true); 431f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 432f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 433f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Layers are already drawn with a top-left origin, don't flip the texture 4348b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 1.0f, 1.0f, 0.0f); 4358b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 436f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawTextureMesh(rect.left, rect.top, rect.right, rect.bottom, layer->texture, 437f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 1.0f, layer->mode, layer->blend, &mMeshVertices[0].position[0], 4386820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mMeshVertices[0].texture[0], GL_TRIANGLE_STRIP, gMeshCount, true, true); 4391d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4408b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 4418b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 4421d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LayerSize size(rect.getWidth(), rect.getHeight()); 4431d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Failing to add the layer to the cache should happen only if the 4441d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // layer is too large 445fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (!mCaches.layerCache.put(size, layer)) { 4461d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LAYER_LOGD("Deleting layer"); 4471d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4481d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy glDeleteTextures(1, &layer->texture); 4491d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4501d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy delete layer; 4511d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 4521d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy} 4531d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4548694230ff25fa0a60e480d424843e56b718f0516Romain Guyvoid OpenGLRenderer::clearLayerRegions() { 4558694230ff25fa0a60e480d424843e56b718f0516Romain Guy if (mLayers.size() == 0) return; 4568694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4578694230ff25fa0a60e480d424843e56b718f0516Romain Guy for (uint32_t i = 0; i < mLayers.size(); i++) { 4588694230ff25fa0a60e480d424843e56b718f0516Romain Guy Rect* bounds = mLayers.itemAt(i); 4598694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4608694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Clear the framebuffer where the layer will draw 4618694230ff25fa0a60e480d424843e56b718f0516Romain Guy glScissor(bounds->left, mHeight - bounds->bottom, 4628694230ff25fa0a60e480d424843e56b718f0516Romain Guy bounds->getWidth(), bounds->getHeight()); 4638694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 4648694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClear(GL_COLOR_BUFFER_BIT); 4658694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4668694230ff25fa0a60e480d424843e56b718f0516Romain Guy delete bounds; 4678694230ff25fa0a60e480d424843e56b718f0516Romain Guy } 4688694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.clear(); 4698694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4708694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Restore the clip 4718694230ff25fa0a60e480d424843e56b718f0516Romain Guy setScissorFromClip(); 4728694230ff25fa0a60e480d424843e56b718f0516Romain Guy} 4738694230ff25fa0a60e480d424843e56b718f0516Romain Guy 474bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 475f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Transforms 476f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 477f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 478f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::translate(float dx, float dy) { 4798aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->translate(dx, dy, 0.0f); 480f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 481f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 482f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::rotate(float degrees) { 4838aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->rotate(degrees, 0.0f, 0.0f, 1.0f); 484f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 485f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 486f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::scale(float sx, float sy) { 4878aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->scale(sx, sy, 1.0f); 488f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 489f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 490f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::setMatrix(SkMatrix* matrix) { 4918aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->load(*matrix); 492f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 493f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 494f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::getMatrix(SkMatrix* matrix) { 4958aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->copyTo(*matrix); 496f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 497f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 498f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::concatMatrix(SkMatrix* matrix) { 4997ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mat4 m(*matrix); 5008aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->multiply(m); 501f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 502f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 503f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 504f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Clipping 505f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 506f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 507bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::setScissorFromClip() { 5088aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *mSnapshot->clipRect; 509f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 5109d5316e3f56d138504565ff311145ac01621dff4Romain Guy} 5119d5316e3f56d138504565ff311145ac01621dff4Romain Guy 5129d5316e3f56d138504565ff311145ac01621dff4Romain Guyconst Rect& OpenGLRenderer::getClipBounds() { 513079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return mSnapshot->getLocalClip(); 514bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 515bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 516c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guybool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) { 5171d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Rect r(left, top, right, bottom); 5188aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->mapRect(r); 5198aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->intersects(r); 520c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 521c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy 522079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guybool OpenGLRenderer::clipRect(float left, float top, float right, float bottom, SkRegion::Op op) { 523079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bool clipped = mSnapshot->clip(left, top, right, bottom, op); 5247ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (clipped) { 5257ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 5267ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 5278aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->isEmpty(); 528e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 529e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 530f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 531f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Drawing 532f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 533f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 534c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, float left, float top, const SkPaint* paint) { 5356926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float right = left + bitmap->width(); 5366926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float bottom = top + bitmap->height(); 5376926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 5386926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 5396926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5406926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5416926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 54261c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 543fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5449cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 54522158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 54622158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 5476926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy drawTextureRect(left, top, right, bottom, texture, paint); 5488ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 5498ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 550f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, const SkMatrix* matrix, const SkPaint* paint) { 551f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy Rect r(0.0f, 0.0f, bitmap->width(), bitmap->height()); 552f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const mat4 transform(*matrix); 553f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy transform.mapRect(r); 554f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 5556926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(r.left, r.top, r.right, r.bottom)) { 5566926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5576926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5586926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 55961c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 560fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5619cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 56222158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 56322158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 56482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(r.left, r.top, r.right, r.bottom, texture, paint); 565f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy} 566f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 5678ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, 5688ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float srcLeft, float srcTop, float srcRight, float srcBottom, 5698ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float dstLeft, float dstTop, float dstRight, float dstBottom, 570f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const SkPaint* paint) { 5716926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(dstLeft, dstTop, dstRight, dstBottom)) { 5726926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5736926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5746926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 57561c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 576fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5779cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 57822158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 5798ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 5808ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float width = texture->width; 5818ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float height = texture->height; 582c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 5838ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u1 = srcLeft / width; 5848ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v1 = srcTop / height; 5858ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u2 = srcRight / width; 5868ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v2 = srcBottom / height; 587c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 5888ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(u1, v1, u2, v2); 5898ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 59082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(dstLeft, dstTop, dstRight, dstBottom, texture, paint); 5918ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 5928ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 593ce0537b80087a6225273040a987414b1dd081aa0Romain Guy} 594ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 5954aa90573bbf86db0d33a3a790c5dbd0d93b95cfeRomain Guyvoid OpenGLRenderer::drawPatch(SkBitmap* bitmap, const int32_t* xDivs, const int32_t* yDivs, 5964aa90573bbf86db0d33a3a790c5dbd0d93b95cfeRomain Guy uint32_t width, uint32_t height, float left, float top, float right, float bottom, 5974aa90573bbf86db0d33a3a790c5dbd0d93b95cfeRomain Guy const SkPaint* paint) { 5986926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 5996926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6006926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6016926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 60261c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 603fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 6049cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 60522158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 606f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 607f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy int alpha; 608f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy SkXfermode::Mode mode; 609f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy getAlphaAndMode(paint, &alpha, &mode); 610f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 6114aa90573bbf86db0d33a3a790c5dbd0d93b95cfeRomain Guy Patch* mesh = mCaches.patchCache.get(width, height); 612759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mesh->updateVertices(bitmap->width(), bitmap->height(),left, top, right, bottom, 6134aa90573bbf86db0d33a3a790c5dbd0d93b95cfeRomain Guy xDivs, yDivs, width, height); 614f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 615f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // Specify right and bottom as +1.0f from left/top to prevent scaling since the 616f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // patch mesh already defines the final size 617a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, left + 1.0f, top + 1.0f, texture->id, alpha / 255.0f, 618a979474f15b454c8e2963f239a3770e200bb227cRomain Guy mode, texture->blend, &mesh->vertices[0].position[0], 6196820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mesh->vertices[0].texture[0], GL_TRIANGLES, mesh->verticesCount); 620f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 621f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 622759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guyvoid OpenGLRenderer::drawLines(float* points, int count, const SkPaint* paint) { 623759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy int alpha; 624759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy SkXfermode::Mode mode; 625759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy getAlphaAndMode(paint, &alpha, &mode); 626759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 627759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy uint32_t color = paint->getColor(); 628759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat a = alpha / 255.0f; 629759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 630759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 631759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 632759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 633c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const bool isAA = paint->isAntiAlias(); 634c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (isAA) { 635c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy GLuint textureUnit = 0; 63629d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy setupTextureAlpha8(mCaches.line.getTexture(), 0, 0, textureUnit, 0.0f, 0.0f, r, g, b, a, 63729d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy mode, false, true, mCaches.line.getVertices(), mCaches.line.getTexCoords()); 638c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } else { 639c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy setupColorRect(0.0f, 0.0f, 1.0f, 1.0f, r, g, b, a, mode, false); 640c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 641c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 642c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const float strokeWidth = paint->getStrokeWidth(); 64329d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy const GLsizei elementsCount = isAA ? mCaches.line.getElementsCount() : gMeshCount; 644c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const GLenum drawMode = isAA ? GL_TRIANGLES : GL_TRIANGLE_STRIP; 645759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 646759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy for (int i = 0; i < count; i += 4) { 647759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy float tx = 0.0f; 648759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy float ty = 0.0f; 649759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 650c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (isAA) { 65129d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy mCaches.line.update(points[i], points[i + 1], points[i + 2], points[i + 3], 652c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy strokeWidth, tx, ty); 653c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } else { 654b5ab4173e0927e4668a45298c9900cd8007584e1Romain Guy ty = strokeWidth <= 1.0f ? 0.0f : -strokeWidth * 0.5f; 655c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 656759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 657759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float dx = points[i + 2] - points[i]; 658759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float dy = points[i + 3] - points[i + 1]; 659759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float mag = sqrtf(dx * dx + dy * dy); 660759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float angle = acos(dx / mag); 661759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 662759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.loadTranslate(points[i], points[i + 1], 0.0f); 663759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy if (angle > MIN_ANGLE || angle < -MIN_ANGLE) { 664759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.rotate(angle * RAD_TO_DEG, 0.0f, 0.0f, 1.0f); 665759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 666759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.translate(tx, ty, 0.0f); 667c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (!isAA) { 66829d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy float length = mCaches.line.getLength(points[i], points[i + 1], 66929d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy points[i + 2], points[i + 3]); 670c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy mModelView.scale(length, strokeWidth, 1.0f); 671c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 672759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 673759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 674759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy if (mShader) { 675759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mShader->updateTransforms(mCaches.currentProgram, mModelView, *mSnapshot); 676759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 677759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 678c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy glDrawArrays(drawMode, 0, elementsCount); 679759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 680759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 68129d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy if (isAA) { 68229d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 68329d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy } 684759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy} 685759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 68685bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) { 6878aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *mSnapshot->clipRect; 6883d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode, true); 689c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 6909d5316e3f56d138504565ff311145ac01621dff4Romain Guy 691bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawRect(float left, float top, float right, float bottom, const SkPaint* p) { 6926926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 6936926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6946926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6956926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 696026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy SkXfermode::Mode mode; 697a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 698a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 699a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 700a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 701a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 702a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 703a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 704a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 705026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 706026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 707026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Skia draws using the color's alpha channel if < 255 708026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Otherwise, it uses the paint's alpha 709026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color = p->getColor(); 710d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (((color >> 24) & 0xff) == 255) { 711026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy color |= p->getAlpha() << 24; 712026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 713026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 714026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(left, top, right, bottom, color, mode); 715c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 7169d5316e3f56d138504565ff311145ac01621dff4Romain Guy 717e8e62a4a032a80409114a37908b5f18ab0080848Romain Guyvoid OpenGLRenderer::drawText(const char* text, int bytesCount, int count, 718e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy float x, float y, SkPaint* paint) { 719f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (text == NULL || count == 0 || (paint->getAlpha() == 0 && paint->getXfermode() == NULL)) { 720e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy return; 721e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 722e2d345ea67e2960b37bfdc0fc8626d1bfa747404Romain Guy 723f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy paint->setAntiAlias(true); 724e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 725a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy float length = -1.0f; 726e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy switch (paint->getTextAlign()) { 727e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kCenter_Align: 728e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 729e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length / 2.0f; 730e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 731e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kRight_Align: 732e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 733e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length; 734e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 735e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy default: 736e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 737e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 738e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 739694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy int alpha; 740694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy SkXfermode::Mode mode; 741694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy getAlphaAndMode(paint, &alpha, &mode); 742694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 7432542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy uint32_t color = paint->getColor(); 7442542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = alpha / 255.0f; 7452542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 7462542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 7472542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 7482542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 749b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy FontRenderer& fontRenderer = mCaches.fontRenderer.getFontRenderer(paint); 750b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.setFont(paint, SkTypeface::UniqueID(paint->getTypeface()), 751fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy paint->getTextSize()); 752e2d345ea67e2960b37bfdc0fc8626d1bfa747404Romain Guy 7531e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy if (mHasShadow) { 7541e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy glActiveTexture(gTextureUnits[0]); 755b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy mCaches.dropShadowCache.setFontRenderer(fontRenderer); 756fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const ShadowTexture* shadow = mCaches.dropShadowCache.get(paint, text, bytesCount, 7571e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy count, mShadowRadius); 7581e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy const AutoTexture autoCleanup(shadow); 7590a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7602542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setupShadow(shadow, x, y, mode, a); 7610a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7620a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 7630a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 764fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 7651e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy } 7661e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 76706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 768db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 76906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 770e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy // Assume that the modelView matrix does not force scales, rotates, etc. 771e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy const bool linearFilter = mSnapshot->transform->changesBounds(); 772e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy setupTextureAlpha8(fontRenderer.getTexture(linearFilter), 0, 0, textureUnit, 773e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy x, y, r, g, b, a, mode, false, true); 77406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 77509147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy const Rect& clip = mSnapshot->getLocalClip(); 7768694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 777b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.renderText(paint, &clip, text, 0, bytesCount, count, x, y); 778694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 779694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); 780fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 781a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy 7820a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawTextDecorations(text, bytesCount, length, x, y, paint); 783694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy} 784694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 7857fbcc0492fca03857e3c45064f4aa040af817d55Romain Guyvoid OpenGLRenderer::drawPath(SkPath* path, SkPaint* paint) { 7867fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy GLuint textureUnit = 0; 7877fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 7887fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 789fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const PathTexture* texture = mCaches.pathCache.get(path, paint); 7909cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 79122158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 7927fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7938b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float x = texture->left - texture->offset; 7948b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float y = texture->top - texture->offset; 7958b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 7968b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy if (quickReject(x, y, x + texture->width, y + texture->height)) { 7978b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy return; 7988b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 7998b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 8007fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy int alpha; 8017fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy SkXfermode::Mode mode; 8027fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy getAlphaAndMode(paint, &alpha, &mode); 8037fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 8047fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy uint32_t color = paint->getColor(); 8057fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat a = alpha / 255.0f; 8067fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 8077fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 8087fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 8097fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 8100a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, x, y, r, g, b, a, mode, true, true); 8110a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8128694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 8138694230ff25fa0a60e480d424843e56b718f0516Romain Guy 8140a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 8150a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 816fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 8177fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy} 8187fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 8196926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 820d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy// Shaders 821d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 822d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 823d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guyvoid OpenGLRenderer::resetShader() { 82406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 82506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy} 82606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 82706f96e2652e4855b6520ad9dd70583677605b79aRomain Guyvoid OpenGLRenderer::setupShader(SkiaShader* shader) { 82806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = shader; 82906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 830fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->set(&mCaches.textureCache, &mCaches.gradientCache); 83106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy } 8327fac2e18339f765320d759e8d4c090f92431959eRomain Guy} 8337fac2e18339f765320d759e8d4c090f92431959eRomain Guy 834d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 835db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy// Color filters 836db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 837db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 838db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::resetColorFilter() { 839db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 840db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 841db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 842db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::setupColorFilter(SkiaColorFilter* filter) { 843db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = filter; 844db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 845db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 846db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 8471e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy// Drop shadow 8481e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 8491e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 8501e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::resetShadow() { 8511e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 8521e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 8531e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 8541e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::setupShadow(float radius, float dx, float dy, int color) { 8551e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = true; 8561e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowRadius = radius; 8571e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDx = dx; 8581e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDy = dy; 8591e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowColor = color; 8601e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 8611e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 8621e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 8636926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy// Drawing implementation 8646926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 8656926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 8660a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupShadow(const ShadowTexture* texture, float x, float y, 8672542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy SkXfermode::Mode mode, float alpha) { 8680a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sx = x - texture->left + mShadowDx; 8690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sy = y - texture->top + mShadowDy; 8700a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8712542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const int shadowAlpha = ((mShadowColor >> 24) & 0xFF); 8722542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = shadowAlpha < 255 ? shadowAlpha / 255.0f : alpha; 8730a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat r = a * ((mShadowColor >> 16) & 0xFF) / 255.0f; 8740a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat g = a * ((mShadowColor >> 8) & 0xFF) / 255.0f; 8750a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat b = a * ((mShadowColor ) & 0xFF) / 255.0f; 8760a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8770a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint textureUnit = 0; 8780a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, sx, sy, r, g, b, a, mode, true, false); 8790a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 8800a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(const Texture* texture, GLuint& textureUnit, 8820a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, float r, float g, float b, float a, SkXfermode::Mode mode, 8830a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bool transforms, bool applyFilters) { 8840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture->id, texture->width, texture->height, textureUnit, 885759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy x, y, r, g, b, a, mode, transforms, applyFilters, 886759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0]); 8870a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 8880a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8890a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 8900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 8910a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters) { 892759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy setupTextureAlpha8(texture, width, height, textureUnit, 893759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy x, y, r, g, b, a, mode, transforms, applyFilters, 894759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0]); 895759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy} 896759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 897759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 898759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 899759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters, 900759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy GLvoid* vertices, GLvoid* texCoords) { 9010a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Describe the required shaders 9020a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy ProgramDescription description; 9030a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasTexture = true; 9040a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasAlpha8Texture = true; 9050a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9060a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 9070a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 9080a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mShader->describe(description, mExtensions); 9090a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9100a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 9110a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mColorFilter->describe(description, mExtensions); 9120a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9130a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9140a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 915a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Setup the blending mode 916a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy chooseBlending(true, mode, description); 917a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 9180a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Build and use the appropriate shader 919fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 9200a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9210a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, textureUnit); 922fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), textureUnit); 9230a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 924fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 9250a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glEnableVertexAttribArray(texCoordsSlot); 9260a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9270a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes 928fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 929759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy gMeshStride, vertices); 9300a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, 931759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy gMeshStride, texCoords); 9320a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9330a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup uniforms 9340a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (transforms) { 9350a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadTranslate(x, y, 0.0f); 9360a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.scale(width, height, 1.0f); 9370a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } else { 9380a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadIdentity(); 9390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9408aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 941fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, r, g, b, a); 9420a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9430a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy textureUnit++; 9440a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 9450a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes and uniforms required by the shaders 9460a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 947fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 9480a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9490a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 950fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 9510a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9520a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9530a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 9540a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 955f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy// Same values used by Skia 9560a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdStrikeThru_Offset (-6.0f / 21.0f) 9570a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Offset (1.0f / 9.0f) 9580a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Thickness (1.0f / 18.0f) 9590a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9600a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::drawTextDecorations(const char* text, int bytesCount, float length, 9610a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, SkPaint* paint) { 9620a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Handle underline and strike-through 9630a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy uint32_t flags = paint->getFlags(); 9640a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) { 9650a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float underlineWidth = length; 9660a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // If length is > 0.0f, we already measured the text for the text alignment 9670a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (length <= 0.0f) { 9680a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy underlineWidth = paint->measureText(text, bytesCount); 9690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9700a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9710a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float offsetX = 0; 9720a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy switch (paint->getTextAlign()) { 9730a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kCenter_Align: 9740a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth * 0.5f; 9750a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 9760a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kRight_Align: 9770a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth; 9780a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 9790a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy default: 9800a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 9810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9820a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9830a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (underlineWidth > 0.0f) { 984e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const float textSize = paint->getTextSize(); 985e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const float strokeWidth = textSize * kStdUnderline_Thickness; 9860a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 987e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const float left = x - offsetX; 9880a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float top = 0.0f; 989e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy 990e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy const int pointsCount = 4 * (flags & SkPaint::kStrikeThruText_Flag ? 2 : 1); 991e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy float points[pointsCount]; 992e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy int currentPoint = 0; 9930a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kUnderlineText_Flag) { 9950a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdUnderline_Offset; 996e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left; 997e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 998e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left + underlineWidth; 999e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 10000a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10010a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 10020a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kStrikeThruText_Flag) { 10030a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdStrikeThru_Offset; 1004e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left; 1005e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 1006e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = left + underlineWidth; 1007e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy points[currentPoint++] = top; 10080a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 1009e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy 1010e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy SkPaint linesPaint(*paint); 1011e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy linesPaint.setStrokeWidth(strokeWidth); 1012e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy 1013e20ecbd12d26467754a7770d44bcce2ea92335efRomain Guy drawLines(&points[0], pointsCount, &linesPaint); 10140a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10150a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 10160a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 10170a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 1018026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, 10191c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy int color, SkXfermode::Mode mode, bool ignoreTransform) { 10208694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 10218694230ff25fa0a60e480d424843e56b718f0516Romain Guy 1022d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // If a shader is set, preserve only the alpha 102306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 1024d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy color |= 0x00ffffff; 1025d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 1026d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 1027d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // Render using pre-multiplied alpha 1028026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const int alpha = (color >> 24) & 0xFF; 1029d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy const GLfloat a = alpha / 255.0f; 1030c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 1031c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 1032c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 1033c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 1034c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy setupColorRect(left, top, right, bottom, r, g, b, a, mode, ignoreTransform); 1035c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 1036c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy // Draw the mesh 1037c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 1038c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy} 1039c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 1040c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guyvoid OpenGLRenderer::setupColorRect(float left, float top, float right, float bottom, 1041c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy float r, float g, float b, float a, SkXfermode::Mode mode, bool ignoreTransform) { 104206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 10439d5316e3f56d138504565ff311145ac01621dff4Romain Guy 104406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Describe the required shaders 1045889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 104606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 104706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader->describe(description, mExtensions); 1048c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 1049db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1050db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 1051db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1052c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 10531c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy // Setup the blending mode 1054c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy chooseBlending(a < 1.0f || (mShader && mShader->blend()), mode, description); 1055a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 105606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Build and use the appropriate shader 1057fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 1058c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 105906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes 1060fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1061ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, &mMeshVertices[0].position[0]); 1062c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 106306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup uniforms 1064889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.loadTranslate(left, top, 0.0f); 1065889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 106606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (!ignoreTransform) { 10678aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1068889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } else { 106906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mat4 identity; 1070fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, identity); 1071889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 1072fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, r, g, b, a); 1073d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 107406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes and uniforms required by the shaders 107506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 1076fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 1077d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 1078db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1079fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1080db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1081d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy} 1082d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 108382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 1084a979474f15b454c8e2963f239a3770e200bb227cRomain Guy const Texture* texture, const SkPaint* paint) { 108582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy int alpha; 108682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy SkXfermode::Mode mode; 108782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy getAlphaAndMode(paint, &alpha, &mode); 108882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 10896820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy drawTextureMesh(left, top, right, bottom, texture->id, alpha / 255.0f, mode, 10906820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy texture->blend, &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], 10916820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GL_TRIANGLE_STRIP, gMeshCount); 109285bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy} 109385bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 1094bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 1095a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend) { 1096a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, right, bottom, texture, alpha, mode, blend, 10976820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], 10986820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GL_TRIANGLE_STRIP, gMeshCount); 1099f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 1100f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 1101f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guyvoid OpenGLRenderer::drawTextureMesh(float left, float top, float right, float bottom, 1102a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend, 11036820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, 1104f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy bool swapSrcDst, bool ignoreTransform) { 11058694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 11068694230ff25fa0a60e480d424843e56b718f0516Romain Guy 1107889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 1108889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasTexture = true; 1109db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1110db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 1111db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1112889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 1113bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.loadTranslate(left, top, 0.0f); 1114bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.scale(right - left, bottom - top, 1.0f); 1115bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1116f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy chooseBlending(blend || alpha < 1.0f, mode, description, swapSrcDst); 1117a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1118fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 1119f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (!ignoreTransform) { 1120f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1121f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } else { 1122f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mat4 m; 1123f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, m); 1124f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 1125bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1126889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Texture 112706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, 0); 1128fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), 0); 1129c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 1130a979474f15b454c8e2963f239a3770e200bb227cRomain Guy // Always premultiplied 1131fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, alpha, alpha, alpha, alpha); 1132bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1133889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Mesh 1134fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 1135889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glEnableVertexAttribArray(texCoordsSlot); 1136fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1137ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, vertices); 1138889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, gMeshStride, texCoords); 1139bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1140db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy // Color filter 1141db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1142fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1143db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1144db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 11456820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy glDrawArrays(drawMode, 0, elementsCount); 1146889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDisableVertexAttribArray(texCoordsSlot); 114782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy} 114882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1149a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guyvoid OpenGLRenderer::chooseBlending(bool blend, SkXfermode::Mode mode, 1150f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy ProgramDescription& description, bool swapSrcDst) { 115182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy blend = blend || mode != SkXfermode::kSrcOver_Mode; 115282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy if (blend) { 1153a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode < SkXfermode::kPlus_Mode) { 1154a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mCaches.blend) { 1155a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glEnable(GL_BLEND); 1156a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 115782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1158f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum sourceMode = swapSrcDst ? gBlendsSwap[mode].src : gBlends[mode].src; 1159f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum destMode = swapSrcDst ? gBlendsSwap[mode].dst : gBlends[mode].dst; 116082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1161a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (sourceMode != mCaches.lastSrcMode || destMode != mCaches.lastDstMode) { 1162a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glBlendFunc(sourceMode, destMode); 1163a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastSrcMode = sourceMode; 1164a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastDstMode = destMode; 1165a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1166a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1167a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // These blend modes are not supported by OpenGL directly and have 1168a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // to be implemented using shaders. Since the shader will perform 1169a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // the blending, turn blending off here 1170a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mExtensions.hasFramebufferFetch()) { 1171a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy description.framebufferMode = mode; 1172f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy description.swapSrcDst = swapSrcDst; 1173a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1174a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1175a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mCaches.blend) { 1176a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glDisable(GL_BLEND); 1177a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1178a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy blend = false; 117982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1180fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy } else if (mCaches.blend) { 118182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy glDisable(GL_BLEND); 118282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1183fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.blend = blend; 1184bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 1185bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1186889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guybool OpenGLRenderer::useProgram(Program* program) { 1187d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (!program->isInUse()) { 1188fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (mCaches.currentProgram != NULL) mCaches.currentProgram->remove(); 1189d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy program->use(); 1190fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram = program; 11916926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return false; 1192260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy } 11936926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return true; 1194260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy} 1195260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy 1196026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) { 1197ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy TextureVertex* v = &mMeshVertices[0]; 119882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v1); 119982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v1); 120082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v2); 120182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v2); 12028ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 12038ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 12048ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) { 12058ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (paint) { 1206a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 1207a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(paint->getXfermode(), mode); 1208a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 1209a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 1210a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = SkXfermode::kSrcOver_Mode; 1211a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1212a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1213a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = getXfermode(paint->getXfermode()); 12148ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 12158ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 12168ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Skia draws using the color's alpha channel if < 255 12178ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Otherwise, it uses the paint's alpha 12188ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy int color = paint->getColor(); 12198ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = (color >> 24) & 0xFF; 12208ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (*alpha == 255) { 12218ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = paint->getAlpha(); 12228ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 12238ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } else { 12248ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *mode = SkXfermode::kSrcOver_Mode; 12258ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = 255; 12268ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 1227026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy} 1228026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 1229a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain GuySkXfermode::Mode OpenGLRenderer::getXfermode(SkXfermode* mode) { 1230a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode == NULL) { 1231a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return SkXfermode::kSrcOver_Mode; 1232a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1233a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return mode->fMode; 1234a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy} 1235a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1236889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guyvoid OpenGLRenderer::bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT, GLuint textureUnit) { 1237889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glActiveTexture(gTextureUnits[textureUnit]); 1238ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 1239a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrapS); 1240a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrapT); 1241a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy} 1242a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy 12439d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 1244e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy}; // namespace android 1245