OpenGLRenderer.cpp revision bf434114cbf55b216fdc76fc8d65a75e84c9dab5
1e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy/* 2e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * Copyright (C) 2010 The Android Open Source Project 3e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * 4e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * Licensed under the Apache License, Version 2.0 (the "License"); 5e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * you may not use this file except in compliance with the License. 6e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * You may obtain a copy of the License at 7e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * 8e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * http://www.apache.org/licenses/LICENSE-2.0 9e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * 10e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * Unless required by applicable law or agreed to in writing, software 11e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * distributed under the License is distributed on an "AS IS" BASIS, 12e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * See the License for the specific language governing permissions and 14e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * limitations under the License. 15e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy */ 16e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 1785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy#define LOG_TAG "OpenGLRenderer" 18e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 19e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy#include <stdlib.h> 20e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy#include <stdint.h> 21e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy#include <sys/types.h> 22e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 23bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#include <SkCanvas.h> 24694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy#include <SkTypeface.h> 255cbbce535744b89df5ecea95de21ee3733298260Romain Guy 265cbbce535744b89df5ecea95de21ee3733298260Romain Guy#include <utils/Log.h> 2785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 2885bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy#include "OpenGLRenderer.h" 29e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 30e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guynamespace android { 319d5316e3f56d138504565ff311145ac01621dff4Romain Guynamespace uirenderer { 329d5316e3f56d138504565ff311145ac01621dff4Romain Guy 339d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 349d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Defines 359d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 369d5316e3f56d138504565ff311145ac01621dff4Romain Guy 3706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy#define REQUIRED_TEXTURE_UNITS_COUNT 3 3806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 39dda570201ac851dd85af3861f7e575721d3345daRomain Guy// Generates simple and textured vertices 40bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#define FV(x, y, u, v) { { x, y }, { u, v } } 419d5316e3f56d138504565ff311145ac01621dff4Romain Guy 429d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 439d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Globals 449d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 459d5316e3f56d138504565ff311145ac01621dff4Romain Guy 46026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// This array is never used directly but used as a memcpy source in the 47026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// OpenGLRenderer constructor 48ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const TextureVertex gMeshVertices[] = { 49c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 0.0f, 0.0f, 0.0f), 50c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 0.0f, 1.0f, 0.0f), 51c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 1.0f, 0.0f, 1.0f), 52c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 1.0f, 1.0f, 1.0f) 53bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy}; 54ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshStride = sizeof(TextureVertex); 55ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshCount = 4; 56026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 57889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy/** 58889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy * Structure mapping Skia xfermodes to OpenGL blending factors. 59889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy */ 60889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystruct Blender { 61889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy SkXfermode::Mode mode; 62889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum src; 63889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum dst; 64889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy}; // struct Blender 65889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 66026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// In this array, the index of each Blender equals the value of the first 67026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// entry. For instance, gBlends[1] == gBlends[SkXfermode::kSrc_Mode] 68026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const Blender gBlends[] = { 69026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 70026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrc_Mode, GL_ONE, GL_ZERO }, 71026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDst_Mode, GL_ZERO, GL_ONE }, 72026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 73026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 74026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcIn_Mode, GL_DST_ALPHA, GL_ZERO }, 75026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 76026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 77026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 78026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 79026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 80026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 81026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy}; 82e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 8387a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// This array contains the swapped version of each SkXfermode. For instance 8487a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// this array's SrcOver blending mode is actually DstOver. You can refer to 8587a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// createLayer() for more information on the purpose of this array. 86f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guystatic const Blender gBlendsSwap[] = { 87f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 88f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrc_Mode, GL_ZERO, GL_ONE }, 89f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDst_Mode, GL_ONE, GL_ZERO }, 90f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 91f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 92f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 93f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstIn_Mode, GL_DST_ALPHA, GL_ZERO }, 94f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 95f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 96f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 97f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 98f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 99f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy}; 100f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 101889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystatic const GLenum gTextureUnits[] = { 10206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE0, 10306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE1, 10406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE2 105d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy}; 106d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 107f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 108f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Constructors/destructor 109f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 110f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 111fb8b763f762ae21923c58d64caa729b012f40e05Romain GuyOpenGLRenderer::OpenGLRenderer(): mCaches(Caches::getInstance()) { 11285bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Create OpenGLRenderer"); 1139d5316e3f56d138504565ff311145ac01621dff4Romain Guy 11406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 115db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 1161e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 117026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 118ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy memcpy(mMeshVertices, gMeshVertices, sizeof(gMeshVertices)); 119ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy 120ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy mFirstSnapshot = new Snapshot; 121ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy 122ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy GLint maxTextureUnits; 123ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits); 124ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy if (maxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) { 125889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy LOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT); 126889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 127b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy 128b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 129e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 130e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 13185bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain GuyOpenGLRenderer::~OpenGLRenderer() { 13285bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Destroy OpenGLRenderer"); 133e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 134e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 135f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 136f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Setup 137f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 138f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 13985bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::setViewport(int width, int height) { 14008ae317c21ec3086b5017672bba87420cc38a407Romain Guy glViewport(0, 0, width, height); 141260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy mOrthoMatrix.loadOrtho(0, width, height, 0, -1, 1); 142bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 143bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mWidth = width; 144bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mHeight = height; 145e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 146e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 14785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::prepare() { 1488aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mFirstSnapshot, 1498aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag); 1508fb954263dd2f918ad339045cc6d82e346515599Romain Guy mSaveCount = 1; 151f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 152fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glViewport(0, 0, mWidth, mHeight); 153fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy 154d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy glDisable(GL_DITHER); 15508ae317c21ec3086b5017672bba87420cc38a407Romain Guy glDisable(GL_SCISSOR_TEST); 156bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 15708ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 15808ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClear(GL_COLOR_BUFFER_BIT); 159bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 16008ae317c21ec3086b5017672bba87420cc38a407Romain Guy glEnable(GL_SCISSOR_TEST); 161c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glScissor(0, 0, mWidth, mHeight); 162f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 163b82da65cb1601be504241f36778395cd6cb9f87bRomain Guy mSnapshot->setClip(0.0f, 0.0f, mWidth, mHeight); 164bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 165bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 166b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guyvoid OpenGLRenderer::finish() { 167b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy#if DEBUG_OPENGL 168b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy GLenum status = GL_NO_ERROR; 169b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy while ((status = glGetError()) != GL_NO_ERROR) { 170b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy LOGD("GL error from OpenGLRenderer: 0x%x", status); 171b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 172b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy#endif 173b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy} 174b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy 175da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::acquireContext() { 176da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram) { 177da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram->isInUse()) { 178da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram->remove(); 179da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram = NULL; 180da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 181da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 182da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 183da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 184da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::releaseContext() { 185f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glViewport(0, 0, mWidth, mHeight); 186da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 187da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_SCISSOR_TEST); 188da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy setScissorFromClip(); 189da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 190f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glDisable(GL_DITHER); 191f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 192f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, 0); 193f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 194da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.blend) { 195da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_BLEND); 196da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glBlendFunc(mCaches.lastSrcMode, mCaches.lastDstMode); 197f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBlendEquation(GL_FUNC_ADD); 198da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } else { 199da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glDisable(GL_BLEND); 200da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 201da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 202da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 203f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 204f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// State management 205f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 206f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 207bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::getSaveCount() const { 2087ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSaveCount; 209bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 210bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 211bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::save(int flags) { 2128aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveSnapshot(flags); 213bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 214bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 215bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restore() { 2162542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (mSaveCount > 1) { 2172542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2187ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 219bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 220bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 221bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restoreToCount(int saveCount) { 2228fb954263dd2f918ad339045cc6d82e346515599Romain Guy if (saveCount < 1) saveCount = 1; 223bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2248fb954263dd2f918ad339045cc6d82e346515599Romain Guy while (mSaveCount > saveCount) { 2252542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2267ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 227bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 228bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2298aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guyint OpenGLRenderer::saveSnapshot(int flags) { 2308aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mSnapshot, flags); 2318fb954263dd2f918ad339045cc6d82e346515599Romain Guy return mSaveCount++; 232bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 233bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 234bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::restoreSnapshot() { 2357ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = mSnapshot->flags & Snapshot::kFlagClipSet; 236bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy bool restoreLayer = mSnapshot->flags & Snapshot::kFlagIsLayer; 237bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 238bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy sp<Snapshot> current = mSnapshot; 2397ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy sp<Snapshot> previous = mSnapshot->previous; 240bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2418b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSaveCount--; 2428b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSnapshot = previous; 2438b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 244bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (restoreLayer) { 245d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy composeLayer(current, previous); 246d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 247bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2482542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (restoreClip) { 2492542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setScissorFromClip(); 2508fb954263dd2f918ad339045cc6d82e346515599Romain Guy } 2512542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 2522542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy return restoreClip; 253d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 2545cbbce535744b89df5ecea95de21ee3733298260Romain Guy 255f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 256bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy// Layers 257bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 258bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 259bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayer(float left, float top, float right, float bottom, 260bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const SkPaint* p, int flags) { 2618aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy int count = saveSnapshot(flags); 262d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 263d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int alpha = 255; 264d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy SkXfermode::Mode mode; 265d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 266d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (p) { 267d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy alpha = p->getAlpha(); 268a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 269a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 270a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 271a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 272a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 273a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 274a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 275a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 276d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 277d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } else { 278d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 279d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 280d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 281f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, mode, flags); 282d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 283d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 284bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 285bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 286bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayerAlpha(float left, float top, float right, float bottom, 287bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int alpha, int flags) { 2888aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy if (alpha == 0xff) { 2898aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, NULL, flags); 2908b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } else { 2918aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkPaint paint; 2928aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy paint.setAlpha(alpha); 2938aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, &paint, flags); 2948b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 295d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 296bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2971c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 2981c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Layers are viewed by Skia are slightly different than layers in image editing 2991c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * programs (for instance.) When a layer is created, previously created layers 3001c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * and the frame buffer still receive every drawing command. For instance, if a 3011c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * layer is created and a shape intersecting the bounds of the layers and the 3021c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * framebuffer is draw, the shape will be drawn on both (unless the layer was 3031c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * created with the SkCanvas::kClipToLayer_SaveFlag flag.) 3041c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3051c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * A way to implement layers is to create an FBO for each layer, backed by an RGBA 3061c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * texture. Unfortunately, this is inefficient as it requires every primitive to 3071c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be drawn n + 1 times, where n is the number of active layers. In practice this 3081c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * means, for every primitive: 3091c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Switch active frame buffer 3101c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Change viewport, clip and projection matrix 3111c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Issue the drawing 3121c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3131c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Switching rendering target n + 1 times per drawn primitive is extremely costly. 3141c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * To avoid this, layers are implemented in a different way here. 3151c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3161c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * This implementation relies on the frame buffer being at least RGBA 8888. When 3171c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * a layer is created, only a texture is created, not an FBO. The content of the 3181c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer contained within the layer's bounds is copied into this texture 31987a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * using glCopyTexImage2D(). The layer's region is then cleared(1) in the frame 3201c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * buffer and drawing continues as normal. This technique therefore treats the 3211c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer as a scratch buffer for the layers. 3221c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3231c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * To compose the layers back onto the frame buffer, each layer texture 3241c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * (containing the original frame buffer data) is drawn as a simple quad over 3251c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * the frame buffer. The trick is that the quad is set as the composition 3261c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * destination in the blending equation, and the frame buffer becomes the source 3271c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * of the composition. 3281c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3291c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Drawing layers with an alpha value requires an extra step before composition. 3301c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * An empty quad is drawn over the layer's region in the frame buffer. This quad 3311c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is drawn with the rgba color (0,0,0,alpha). The alpha value offered by the 3321c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * quad is used to multiply the colors in the frame buffer. This is achieved by 3331c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * changing the GL blend functions for the GL_FUNC_ADD blend equation to 3341c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * GL_ZERO, GL_SRC_ALPHA. 3351c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3361c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Because glCopyTexImage2D() can be slow, an alternative implementation might 3371c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be use to draw a single clipped layer. The implementation described above 3381c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is correct in every case. 33987a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * 34087a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * (1) The frame buffer is actually not cleared right away. To allow the GPU 34187a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * to potentially optimize series of calls to glCopyTexImage2D, the frame 34287a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * buffer is left untouched until the first drawing operation. Only when 34387a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * something actually gets drawn are the layers regions cleared. 3441c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 345d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guybool OpenGLRenderer::createLayer(sp<Snapshot> snapshot, float left, float top, 346d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy float right, float bottom, int alpha, SkXfermode::Mode mode,int flags) { 347d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy LAYER_LOGD("Requesting layer %fx%f", right - left, bottom - top); 348fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy LAYER_LOGD("Layer cache size = %d", mCaches.layerCache.getSize()); 349dda570201ac851dd85af3861f7e575721d3345daRomain Guy 350f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Window coordinates of the layer 3518aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy Rect bounds(left, top, right, bottom); 352f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mSnapshot->transform->mapRect(bounds); 3538aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy 3548411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy // Layers only make sense if they are in the framebuffer's bounds 3558411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy bounds.intersect(*mSnapshot->clipRect); 356bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy bounds.snapToPixelBoundaries(); 357bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy 358b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy if (bounds.isEmpty() || bounds.getWidth() > mMaxTextureSize || 359b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy bounds.getHeight() > mMaxTextureSize) { 360b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy return false; 361b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 362dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3638411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy LayerSize size(bounds.getWidth(), bounds.getHeight()); 364f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy Layer* layer = mCaches.layerCache.get(size); 365f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy if (!layer) { 366f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy return false; 367bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 368bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 369dda570201ac851dd85af3861f7e575721d3345daRomain Guy layer->mode = mode; 370f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy layer->alpha = alpha; 3718aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy layer->layer.set(bounds); 372dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3738fb954263dd2f918ad339045cc6d82e346515599Romain Guy // Save the layer in the snapshot 3748fb954263dd2f918ad339045cc6d82e346515599Romain Guy snapshot->flags |= Snapshot::kFlagIsLayer; 375dda570201ac851dd85af3861f7e575721d3345daRomain Guy snapshot->layer = layer; 3761d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 377f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Copy the framebuffer into the layer 378f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBindTexture(GL_TEXTURE_2D, layer->texture); 379f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bounds.left, mHeight - bounds.bottom, 380f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy bounds.getWidth(), bounds.getHeight(), 0); 381f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 382f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (flags & SkCanvas::kClipToLayer_SaveFlag) { 3838694230ff25fa0a60e480d424843e56b718f0516Romain Guy if (mSnapshot->clipTransformed(bounds)) setScissorFromClip(); 384f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 385f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 3868694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Enqueue the buffer coordinates to clear the corresponding region later 3878694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.push(new Rect(bounds)); 388f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 389d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return true; 390bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 391bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 3921c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 3931c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Read the documentation of createLayer() before doing anything in this method. 3941c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 3951d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guyvoid OpenGLRenderer::composeLayer(sp<Snapshot> current, sp<Snapshot> previous) { 3961d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy if (!current->layer) { 3971d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LOGE("Attempting to compose a layer that does not exist"); 3981d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy return; 3991d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 4001d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4011d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Restore the clip from the previous snapshot 4028aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *previous->clipRect; 403f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 4041d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4051d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Layer* layer = current->layer; 4061d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy const Rect& rect = layer->layer; 4071d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 408f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (layer->alpha < 255) { 409f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawColorRect(rect.left, rect.top, rect.right, rect.bottom, 4101c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy layer->alpha << 24, SkXfermode::kDstIn_Mode, true); 411f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 412f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 413f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Layers are already drawn with a top-left origin, don't flip the texture 4148b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 1.0f, 1.0f, 0.0f); 4158b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 416f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawTextureMesh(rect.left, rect.top, rect.right, rect.bottom, layer->texture, 417f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 1.0f, layer->mode, layer->blend, &mMeshVertices[0].position[0], 4186820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mMeshVertices[0].texture[0], GL_TRIANGLE_STRIP, gMeshCount, true, true); 4191d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4208b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 4218b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 4221d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LayerSize size(rect.getWidth(), rect.getHeight()); 4231d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Failing to add the layer to the cache should happen only if the 4241d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // layer is too large 425fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (!mCaches.layerCache.put(size, layer)) { 4261d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LAYER_LOGD("Deleting layer"); 4271d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4281d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy glDeleteTextures(1, &layer->texture); 4291d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4301d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy delete layer; 4311d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 4321d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy} 4331d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4348694230ff25fa0a60e480d424843e56b718f0516Romain Guyvoid OpenGLRenderer::clearLayerRegions() { 4358694230ff25fa0a60e480d424843e56b718f0516Romain Guy if (mLayers.size() == 0) return; 4368694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4378694230ff25fa0a60e480d424843e56b718f0516Romain Guy for (uint32_t i = 0; i < mLayers.size(); i++) { 4388694230ff25fa0a60e480d424843e56b718f0516Romain Guy Rect* bounds = mLayers.itemAt(i); 4398694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4408694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Clear the framebuffer where the layer will draw 4418694230ff25fa0a60e480d424843e56b718f0516Romain Guy glScissor(bounds->left, mHeight - bounds->bottom, 4428694230ff25fa0a60e480d424843e56b718f0516Romain Guy bounds->getWidth(), bounds->getHeight()); 4438694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 4448694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClear(GL_COLOR_BUFFER_BIT); 4458694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4468694230ff25fa0a60e480d424843e56b718f0516Romain Guy delete bounds; 4478694230ff25fa0a60e480d424843e56b718f0516Romain Guy } 4488694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.clear(); 4498694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4508694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Restore the clip 4518694230ff25fa0a60e480d424843e56b718f0516Romain Guy setScissorFromClip(); 4528694230ff25fa0a60e480d424843e56b718f0516Romain Guy} 4538694230ff25fa0a60e480d424843e56b718f0516Romain Guy 454bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 455f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Transforms 456f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 457f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 458f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::translate(float dx, float dy) { 4598aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->translate(dx, dy, 0.0f); 460f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 461f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 462f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::rotate(float degrees) { 4638aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->rotate(degrees, 0.0f, 0.0f, 1.0f); 464f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 465f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 466f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::scale(float sx, float sy) { 4678aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->scale(sx, sy, 1.0f); 468f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 469f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 470f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::setMatrix(SkMatrix* matrix) { 4718aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->load(*matrix); 472f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 473f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 474f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::getMatrix(SkMatrix* matrix) { 4758aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->copyTo(*matrix); 476f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 477f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 478f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::concatMatrix(SkMatrix* matrix) { 4797ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mat4 m(*matrix); 4808aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->multiply(m); 481f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 482f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 483f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 484f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Clipping 485f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 486f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 487bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::setScissorFromClip() { 4888aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *mSnapshot->clipRect; 489f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 4909d5316e3f56d138504565ff311145ac01621dff4Romain Guy} 4919d5316e3f56d138504565ff311145ac01621dff4Romain Guy 4929d5316e3f56d138504565ff311145ac01621dff4Romain Guyconst Rect& OpenGLRenderer::getClipBounds() { 493079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return mSnapshot->getLocalClip(); 494bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 495bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 496c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guybool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) { 4971d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Rect r(left, top, right, bottom); 4988aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->mapRect(r); 4998aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->intersects(r); 500c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 501c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy 502079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guybool OpenGLRenderer::clipRect(float left, float top, float right, float bottom, SkRegion::Op op) { 503079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bool clipped = mSnapshot->clip(left, top, right, bottom, op); 5047ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (clipped) { 5057ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 5067ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 5078aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->isEmpty(); 508e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 509e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 510f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 511f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Drawing 512f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 513f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 514c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, float left, float top, const SkPaint* paint) { 5156926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float right = left + bitmap->width(); 5166926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float bottom = top + bitmap->height(); 5176926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 5186926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 5196926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5206926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5216926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 52261c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 523fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5249cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 52522158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 52622158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 5276926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy drawTextureRect(left, top, right, bottom, texture, paint); 5288ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 5298ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 530f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, const SkMatrix* matrix, const SkPaint* paint) { 531f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy Rect r(0.0f, 0.0f, bitmap->width(), bitmap->height()); 532f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const mat4 transform(*matrix); 533f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy transform.mapRect(r); 534f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 5356926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(r.left, r.top, r.right, r.bottom)) { 5366926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5376926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5386926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 53961c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 540fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5419cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 54222158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 54322158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 54482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(r.left, r.top, r.right, r.bottom, texture, paint); 545f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy} 546f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 5478ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, 5488ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float srcLeft, float srcTop, float srcRight, float srcBottom, 5498ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float dstLeft, float dstTop, float dstRight, float dstBottom, 550f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const SkPaint* paint) { 5516926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(dstLeft, dstTop, dstRight, dstBottom)) { 5526926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5536926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5546926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 55561c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 556fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5579cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 55822158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 5598ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 5608ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float width = texture->width; 5618ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float height = texture->height; 562c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 5638ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u1 = srcLeft / width; 5648ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v1 = srcTop / height; 5658ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u2 = srcRight / width; 5668ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v2 = srcBottom / height; 567c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 5688ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(u1, v1, u2, v2); 5698ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 57082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(dstLeft, dstTop, dstRight, dstBottom, texture, paint); 5718ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 5728ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 573ce0537b80087a6225273040a987414b1dd081aa0Romain Guy} 574ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 575deba785f122a47915756ffd991f5540d952cf937Romain Guyvoid OpenGLRenderer::drawPatch(SkBitmap* bitmap, Res_png_9patch* patch, 576deba785f122a47915756ffd991f5540d952cf937Romain Guy float left, float top, float right, float bottom, const SkPaint* paint) { 5776926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 5786926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5796926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5806926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 58161c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 582fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5839cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 58422158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 585f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 586f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy int alpha; 587f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy SkXfermode::Mode mode; 588f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy getAlphaAndMode(paint, &alpha, &mode); 589f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 590fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy Patch* mesh = mCaches.patchCache.get(patch); 591fb5e23c327cd5f8f93d1eaa7c10f34d6fd3efb6cRomain Guy mesh->updateVertices(bitmap, left, top, right, bottom, 592fb5e23c327cd5f8f93d1eaa7c10f34d6fd3efb6cRomain Guy &patch->xDivs[0], &patch->yDivs[0], patch->numXDivs, patch->numYDivs); 593f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 594f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // Specify right and bottom as +1.0f from left/top to prevent scaling since the 595f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // patch mesh already defines the final size 596a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, left + 1.0f, top + 1.0f, texture->id, alpha / 255.0f, 597a979474f15b454c8e2963f239a3770e200bb227cRomain Guy mode, texture->blend, &mesh->vertices[0].position[0], 5986820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mesh->vertices[0].texture[0], GL_TRIANGLES, mesh->verticesCount); 599f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 600f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 60185bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) { 6028aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *mSnapshot->clipRect; 6033d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode, true); 604c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 6059d5316e3f56d138504565ff311145ac01621dff4Romain Guy 606bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawRect(float left, float top, float right, float bottom, const SkPaint* p) { 6076926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 6086926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6096926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6106926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 611026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy SkXfermode::Mode mode; 612a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 613a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 614a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 615a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 616a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 617a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 618a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 619a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 620026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 621026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 622026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Skia draws using the color's alpha channel if < 255 623026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Otherwise, it uses the paint's alpha 624026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color = p->getColor(); 625d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (((color >> 24) & 0xff) == 255) { 626026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy color |= p->getAlpha() << 24; 627026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 628026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 629026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(left, top, right, bottom, color, mode); 630c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 6319d5316e3f56d138504565ff311145ac01621dff4Romain Guy 632e8e62a4a032a80409114a37908b5f18ab0080848Romain Guyvoid OpenGLRenderer::drawText(const char* text, int bytesCount, int count, 633e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy float x, float y, SkPaint* paint) { 634f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (text == NULL || count == 0 || (paint->getAlpha() == 0 && paint->getXfermode() == NULL)) { 635e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy return; 636e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 637f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy paint->setAntiAlias(true); 638e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 639a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy float length = -1.0f; 640e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy switch (paint->getTextAlign()) { 641e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kCenter_Align: 642e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 643e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length / 2.0f; 644e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 645e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kRight_Align: 646e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 647e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length; 648e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 649e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy default: 650e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 651e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 652e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 653694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy int alpha; 654694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy SkXfermode::Mode mode; 655694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy getAlphaAndMode(paint, &alpha, &mode); 656694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 6572542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy uint32_t color = paint->getColor(); 6582542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = alpha / 255.0f; 6592542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 6602542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 6612542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 6622542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 663b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy FontRenderer& fontRenderer = mCaches.fontRenderer.getFontRenderer(paint); 664b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.setFont(paint, SkTypeface::UniqueID(paint->getTypeface()), 665fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy paint->getTextSize()); 6661e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy if (mHasShadow) { 6671e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy glActiveTexture(gTextureUnits[0]); 668b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy mCaches.dropShadowCache.setFontRenderer(fontRenderer); 669fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const ShadowTexture* shadow = mCaches.dropShadowCache.get(paint, text, bytesCount, 6701e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy count, mShadowRadius); 6711e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy const AutoTexture autoCleanup(shadow); 6720a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 6732542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setupShadow(shadow, x, y, mode, a); 6740a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 6750a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 6760a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 677fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 6781e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy } 6791e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 68006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 681db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 68206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 683b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy setupTextureAlpha8(fontRenderer.getTexture(), 0, 0, textureUnit, x, y, r, g, b, a, 6840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mode, false, true); 68506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 68609147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy const Rect& clip = mSnapshot->getLocalClip(); 6878694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 688b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.renderText(paint, &clip, text, 0, bytesCount, count, x, y); 689694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 690694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); 691fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 692a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy 6930a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawTextDecorations(text, bytesCount, length, x, y, paint); 694694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy} 695694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 6967fbcc0492fca03857e3c45064f4aa040af817d55Romain Guyvoid OpenGLRenderer::drawPath(SkPath* path, SkPaint* paint) { 6977fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy GLuint textureUnit = 0; 6987fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 6997fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 700fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const PathTexture* texture = mCaches.pathCache.get(path, paint); 7019cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 70222158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 7037fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7048b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float x = texture->left - texture->offset; 7058b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float y = texture->top - texture->offset; 7068b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 7078b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy if (quickReject(x, y, x + texture->width, y + texture->height)) { 7088b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy return; 7098b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 7108b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 7117fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy int alpha; 7127fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy SkXfermode::Mode mode; 7137fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy getAlphaAndMode(paint, &alpha, &mode); 7147fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7157fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy uint32_t color = paint->getColor(); 7167fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat a = alpha / 255.0f; 7177fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 7187fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 7197fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 7207fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7210a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, x, y, r, g, b, a, mode, true, true); 7220a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7238694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 7248694230ff25fa0a60e480d424843e56b718f0516Romain Guy 7250a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 7260a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 727fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 7287fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy} 7297fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7306926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 731d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy// Shaders 732d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 733d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 734d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guyvoid OpenGLRenderer::resetShader() { 73506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 73606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy} 73706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 73806f96e2652e4855b6520ad9dd70583677605b79aRomain Guyvoid OpenGLRenderer::setupShader(SkiaShader* shader) { 73906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = shader; 74006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 741fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->set(&mCaches.textureCache, &mCaches.gradientCache); 74206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy } 7437fac2e18339f765320d759e8d4c090f92431959eRomain Guy} 7447fac2e18339f765320d759e8d4c090f92431959eRomain Guy 745d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 746db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy// Color filters 747db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 748db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 749db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::resetColorFilter() { 750db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 751db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 752db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 753db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::setupColorFilter(SkiaColorFilter* filter) { 754db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = filter; 755db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 756db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 757db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 7581e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy// Drop shadow 7591e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 7601e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 7611e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::resetShadow() { 7621e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 7631e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 7641e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 7651e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::setupShadow(float radius, float dx, float dy, int color) { 7661e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = true; 7671e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowRadius = radius; 7681e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDx = dx; 7691e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDy = dy; 7701e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowColor = color; 7711e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 7721e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 7731e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 7746926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy// Drawing implementation 7756926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 7766926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 7770a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupShadow(const ShadowTexture* texture, float x, float y, 7782542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy SkXfermode::Mode mode, float alpha) { 7790a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sx = x - texture->left + mShadowDx; 7800a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sy = y - texture->top + mShadowDy; 7810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7822542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const int shadowAlpha = ((mShadowColor >> 24) & 0xFF); 7832542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = shadowAlpha < 255 ? shadowAlpha / 255.0f : alpha; 7840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat r = a * ((mShadowColor >> 16) & 0xFF) / 255.0f; 7850a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat g = a * ((mShadowColor >> 8) & 0xFF) / 255.0f; 7860a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat b = a * ((mShadowColor ) & 0xFF) / 255.0f; 7870a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7880a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint textureUnit = 0; 7890a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, sx, sy, r, g, b, a, mode, true, false); 7900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 7910a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7920a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(const Texture* texture, GLuint& textureUnit, 7930a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, float r, float g, float b, float a, SkXfermode::Mode mode, 7940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bool transforms, bool applyFilters) { 7950a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture->id, texture->width, texture->height, textureUnit, 7960a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy x, y, r, g, b, a, mode, transforms, applyFilters); 7970a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 7980a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7990a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 8000a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 8010a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters) { 8020a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Describe the required shaders 8030a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy ProgramDescription description; 8040a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasTexture = true; 8050a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasAlpha8Texture = true; 8060a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8070a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 8080a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 8090a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mShader->describe(description, mExtensions); 8100a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8110a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 8120a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mColorFilter->describe(description, mExtensions); 8130a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8140a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8150a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 816a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Setup the blending mode 817a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy chooseBlending(true, mode, description); 818a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 8190a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Build and use the appropriate shader 820fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 8210a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8220a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, textureUnit); 823fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), textureUnit); 8240a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 825fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 8260a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glEnableVertexAttribArray(texCoordsSlot); 8270a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8280a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes 829fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 8300a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy gMeshStride, &mMeshVertices[0].position[0]); 8310a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, 8320a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy gMeshStride, &mMeshVertices[0].texture[0]); 8330a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8340a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup uniforms 8350a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (transforms) { 8360a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadTranslate(x, y, 0.0f); 8370a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.scale(width, height, 1.0f); 8380a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } else { 8390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadIdentity(); 8400a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8418aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 842fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, r, g, b, a); 8430a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8440a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy textureUnit++; 8450a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 8460a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes and uniforms required by the shaders 8470a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 848fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 8490a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8500a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 851fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 8520a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8530a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8540a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 8550a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 856f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy// Same values used by Skia 8570a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdStrikeThru_Offset (-6.0f / 21.0f) 8580a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Offset (1.0f / 9.0f) 8590a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Thickness (1.0f / 18.0f) 8600a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8610a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::drawTextDecorations(const char* text, int bytesCount, float length, 8620a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, SkPaint* paint) { 8630a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Handle underline and strike-through 8640a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy uint32_t flags = paint->getFlags(); 8650a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) { 8660a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float underlineWidth = length; 8670a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // If length is > 0.0f, we already measured the text for the text alignment 8680a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (length <= 0.0f) { 8690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy underlineWidth = paint->measureText(text, bytesCount); 8700a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8710a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8720a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float offsetX = 0; 8730a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy switch (paint->getTextAlign()) { 8740a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kCenter_Align: 8750a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth * 0.5f; 8760a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 8770a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kRight_Align: 8780a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth; 8790a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 8800a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy default: 8810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 8820a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8830a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (underlineWidth > 0.0f) { 8850a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float textSize = paint->getTextSize(); 8860a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float height = textSize * kStdUnderline_Thickness; 8870a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8880a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float left = x - offsetX; 8890a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float top = 0.0f; 8900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float right = left + underlineWidth; 8910a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float bottom = 0.0f; 8920a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8930a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kUnderlineText_Flag) { 8940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdUnderline_Offset; 8950a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bottom = top + height; 8960a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawRect(left, top, right, bottom, paint); 8970a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8980a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8990a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kStrikeThruText_Flag) { 9000a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdStrikeThru_Offset; 9010a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bottom = top + height; 9020a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawRect(left, top, right, bottom, paint); 9030a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9040a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9050a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9060a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 9070a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 908026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, 9091c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy int color, SkXfermode::Mode mode, bool ignoreTransform) { 9108694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 9118694230ff25fa0a60e480d424843e56b718f0516Romain Guy 912d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // If a shader is set, preserve only the alpha 91306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 914d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy color |= 0x00ffffff; 915d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 916d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 917d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // Render using pre-multiplied alpha 918026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const int alpha = (color >> 24) & 0xFF; 919d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy const GLfloat a = alpha / 255.0f; 920c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 921c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 922c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 923c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 92406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 9259d5316e3f56d138504565ff311145ac01621dff4Romain Guy 92606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Describe the required shaders 927889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 92806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 92906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader->describe(description, mExtensions); 930c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 931db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 932db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 933db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 934c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 9351c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy // Setup the blending mode 9361c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy chooseBlending(alpha < 255 || (mShader && mShader->blend()), mode, description); 937a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 93806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Build and use the appropriate shader 939fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 940c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 94106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes 942fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 943ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, &mMeshVertices[0].position[0]); 944c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 94506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup uniforms 946889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.loadTranslate(left, top, 0.0f); 947889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 94806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (!ignoreTransform) { 9498aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 950889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } else { 95106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mat4 identity; 952fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, identity); 953889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 954fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, r, g, b, a); 955d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 95606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes and uniforms required by the shaders 95706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 958fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 959d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 960db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 961fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 962db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 963d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 96406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Draw the mesh 965889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 966d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy} 967d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 96882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 969a979474f15b454c8e2963f239a3770e200bb227cRomain Guy const Texture* texture, const SkPaint* paint) { 97082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy int alpha; 97182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy SkXfermode::Mode mode; 97282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy getAlphaAndMode(paint, &alpha, &mode); 97382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 9746820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy drawTextureMesh(left, top, right, bottom, texture->id, alpha / 255.0f, mode, 9756820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy texture->blend, &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], 9766820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GL_TRIANGLE_STRIP, gMeshCount); 97785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy} 97885bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 979bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 980a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend) { 981a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, right, bottom, texture, alpha, mode, blend, 9826820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], 9836820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GL_TRIANGLE_STRIP, gMeshCount); 984f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 985f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 986f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guyvoid OpenGLRenderer::drawTextureMesh(float left, float top, float right, float bottom, 987a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend, 9886820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, 989f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy bool swapSrcDst, bool ignoreTransform) { 9908694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 9918694230ff25fa0a60e480d424843e56b718f0516Romain Guy 992889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 993889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasTexture = true; 994db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 995db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 996db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 997889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 998bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.loadTranslate(left, top, 0.0f); 999bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.scale(right - left, bottom - top, 1.0f); 1000bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1001f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy chooseBlending(blend || alpha < 1.0f, mode, description, swapSrcDst); 1002a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1003fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 1004f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (!ignoreTransform) { 1005f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1006f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } else { 1007f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mat4 m; 1008f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, m); 1009f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 1010bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1011889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Texture 101206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, 0); 1013fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), 0); 1014c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 1015a979474f15b454c8e2963f239a3770e200bb227cRomain Guy // Always premultiplied 1016fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, alpha, alpha, alpha, alpha); 1017bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1018889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Mesh 1019fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 1020889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glEnableVertexAttribArray(texCoordsSlot); 1021fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1022ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, vertices); 1023889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, gMeshStride, texCoords); 1024bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1025db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy // Color filter 1026db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1027fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1028db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1029db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 10306820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy glDrawArrays(drawMode, 0, elementsCount); 1031889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDisableVertexAttribArray(texCoordsSlot); 103282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy} 103382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1034a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guyvoid OpenGLRenderer::chooseBlending(bool blend, SkXfermode::Mode mode, 1035f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy ProgramDescription& description, bool swapSrcDst) { 103682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy blend = blend || mode != SkXfermode::kSrcOver_Mode; 103782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy if (blend) { 1038a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode < SkXfermode::kPlus_Mode) { 1039a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mCaches.blend) { 1040a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glEnable(GL_BLEND); 1041a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 104282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1043f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum sourceMode = swapSrcDst ? gBlendsSwap[mode].src : gBlends[mode].src; 1044f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum destMode = swapSrcDst ? gBlendsSwap[mode].dst : gBlends[mode].dst; 104582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1046a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (sourceMode != mCaches.lastSrcMode || destMode != mCaches.lastDstMode) { 1047a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glBlendFunc(sourceMode, destMode); 1048a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastSrcMode = sourceMode; 1049a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastDstMode = destMode; 1050a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1051a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1052a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // These blend modes are not supported by OpenGL directly and have 1053a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // to be implemented using shaders. Since the shader will perform 1054a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // the blending, turn blending off here 1055a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mExtensions.hasFramebufferFetch()) { 1056a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy description.framebufferMode = mode; 1057f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy description.swapSrcDst = swapSrcDst; 1058a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1059a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1060a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mCaches.blend) { 1061a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glDisable(GL_BLEND); 1062a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1063a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy blend = false; 106482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1065fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy } else if (mCaches.blend) { 106682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy glDisable(GL_BLEND); 106782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1068fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.blend = blend; 1069bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 1070bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1071889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guybool OpenGLRenderer::useProgram(Program* program) { 1072d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (!program->isInUse()) { 1073fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (mCaches.currentProgram != NULL) mCaches.currentProgram->remove(); 1074d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy program->use(); 1075fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram = program; 10766926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return false; 1077260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy } 10786926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return true; 1079260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy} 1080260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy 1081026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) { 1082ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy TextureVertex* v = &mMeshVertices[0]; 108382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v1); 108482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v1); 108582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v2); 108682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v2); 10878ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 10888ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 10898ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) { 10908ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (paint) { 1091a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 1092a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(paint->getXfermode(), mode); 1093a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 1094a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 1095a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = SkXfermode::kSrcOver_Mode; 1096a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1097a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1098a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = getXfermode(paint->getXfermode()); 10998ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 11008ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 11018ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Skia draws using the color's alpha channel if < 255 11028ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Otherwise, it uses the paint's alpha 11038ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy int color = paint->getColor(); 11048ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = (color >> 24) & 0xFF; 11058ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (*alpha == 255) { 11068ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = paint->getAlpha(); 11078ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 11088ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } else { 11098ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *mode = SkXfermode::kSrcOver_Mode; 11108ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = 255; 11118ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 1112026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy} 1113026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 1114a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain GuySkXfermode::Mode OpenGLRenderer::getXfermode(SkXfermode* mode) { 1115a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode == NULL) { 1116a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return SkXfermode::kSrcOver_Mode; 1117a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1118a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return mode->fMode; 1119a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy} 1120a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1121889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guyvoid OpenGLRenderer::bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT, GLuint textureUnit) { 1122889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glActiveTexture(gTextureUnits[textureUnit]); 1123ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 1124a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrapS); 1125a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrapT); 1126a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy} 1127a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy 11289d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 1129e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy}; // namespace android 1130