OpenGLRenderer.cpp revision 29d8997bd43b7c4ad37fc3d6f91eaafa74913c88
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 42759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy#define RAD_TO_DEG (180.0f / 3.14159265f) 43759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy#define MIN_ANGLE 0.001f 44759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 459d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 469d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Globals 479d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 489d5316e3f56d138504565ff311145ac01621dff4Romain Guy 49026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// This array is never used directly but used as a memcpy source in the 50026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// OpenGLRenderer constructor 51ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const TextureVertex gMeshVertices[] = { 52c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 0.0f, 0.0f, 0.0f), 53c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 0.0f, 1.0f, 0.0f), 54c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 1.0f, 0.0f, 1.0f), 55c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 1.0f, 1.0f, 1.0f) 56bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy}; 57ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshStride = sizeof(TextureVertex); 58ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshCount = 4; 59026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 60889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy/** 61889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy * Structure mapping Skia xfermodes to OpenGL blending factors. 62889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy */ 63889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystruct Blender { 64889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy SkXfermode::Mode mode; 65889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum src; 66889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum dst; 67889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy}; // struct Blender 68889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 69026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// In this array, the index of each Blender equals the value of the first 70026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// entry. For instance, gBlends[1] == gBlends[SkXfermode::kSrc_Mode] 71026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const Blender gBlends[] = { 72026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 73026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrc_Mode, GL_ONE, GL_ZERO }, 74026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDst_Mode, GL_ZERO, GL_ONE }, 75026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 76026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 77026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcIn_Mode, GL_DST_ALPHA, GL_ZERO }, 78026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 79026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 80026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 81026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 82026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 83026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 84026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy}; 85e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 8687a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// This array contains the swapped version of each SkXfermode. For instance 8787a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// this array's SrcOver blending mode is actually DstOver. You can refer to 8887a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// createLayer() for more information on the purpose of this array. 89f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guystatic const Blender gBlendsSwap[] = { 90f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 91f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrc_Mode, GL_ZERO, GL_ONE }, 92f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDst_Mode, GL_ONE, GL_ZERO }, 93f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 94f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 95f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 96f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstIn_Mode, GL_DST_ALPHA, GL_ZERO }, 97f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 98f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 99f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 100f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 101f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 102f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy}; 103f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 104889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystatic const GLenum gTextureUnits[] = { 10506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE0, 10606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE1, 10706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE2 108d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy}; 109d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 110f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 111f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Constructors/destructor 112f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 113f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 114fb8b763f762ae21923c58d64caa729b012f40e05Romain GuyOpenGLRenderer::OpenGLRenderer(): mCaches(Caches::getInstance()) { 11585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Create OpenGLRenderer"); 1169d5316e3f56d138504565ff311145ac01621dff4Romain Guy 11706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 118db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 1191e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 120026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 121ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy memcpy(mMeshVertices, gMeshVertices, sizeof(gMeshVertices)); 122ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy 123ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy mFirstSnapshot = new Snapshot; 124ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy 125ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy GLint maxTextureUnits; 126ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits); 127ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy if (maxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) { 128889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy LOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT); 129889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 130b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy 131b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 132e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 133e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 13485bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain GuyOpenGLRenderer::~OpenGLRenderer() { 13585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Destroy OpenGLRenderer"); 13629d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy // The context has already been destroyed at this point, do not call 13729d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy // GL APIs. All GL state should be kept in Caches.h 138e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 139e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 140f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 141f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Setup 142f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 143f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 14485bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::setViewport(int width, int height) { 14508ae317c21ec3086b5017672bba87420cc38a407Romain Guy glViewport(0, 0, width, height); 146260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy mOrthoMatrix.loadOrtho(0, width, height, 0, -1, 1); 147bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 148bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mWidth = width; 149bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mHeight = height; 150e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 151e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 15285bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::prepare() { 1538aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mFirstSnapshot, 1548aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag); 1558fb954263dd2f918ad339045cc6d82e346515599Romain Guy mSaveCount = 1; 156f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 157fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glViewport(0, 0, mWidth, mHeight); 158fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy 159d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy glDisable(GL_DITHER); 16008ae317c21ec3086b5017672bba87420cc38a407Romain Guy glDisable(GL_SCISSOR_TEST); 161bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 16208ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 16308ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClear(GL_COLOR_BUFFER_BIT); 164bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 16508ae317c21ec3086b5017672bba87420cc38a407Romain Guy glEnable(GL_SCISSOR_TEST); 166c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glScissor(0, 0, mWidth, mHeight); 167f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 168b82da65cb1601be504241f36778395cd6cb9f87bRomain Guy mSnapshot->setClip(0.0f, 0.0f, mWidth, mHeight); 169bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 170bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 171b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guyvoid OpenGLRenderer::finish() { 172b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy#if DEBUG_OPENGL 173b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy GLenum status = GL_NO_ERROR; 174b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy while ((status = glGetError()) != GL_NO_ERROR) { 175b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy LOGD("GL error from OpenGLRenderer: 0x%x", status); 176b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 177b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy#endif 178b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy} 179b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy 180da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::acquireContext() { 181da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram) { 182da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram->isInUse()) { 183da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram->remove(); 184da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram = NULL; 185da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 186da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 187da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 188da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 189da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::releaseContext() { 190f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glViewport(0, 0, mWidth, mHeight); 191da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 192da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_SCISSOR_TEST); 193da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy setScissorFromClip(); 194da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 195f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glDisable(GL_DITHER); 196f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 197f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, 0); 198f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 199da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.blend) { 200da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_BLEND); 201da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glBlendFunc(mCaches.lastSrcMode, mCaches.lastDstMode); 202f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBlendEquation(GL_FUNC_ADD); 203da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } else { 204da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glDisable(GL_BLEND); 205da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 206da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 207da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 208f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 209f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// State management 210f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 211f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 212bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::getSaveCount() const { 2137ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSaveCount; 214bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 215bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 216bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::save(int flags) { 2178aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveSnapshot(flags); 218bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 219bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 220bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restore() { 2212542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (mSaveCount > 1) { 2222542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2237ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 224bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 225bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 226bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restoreToCount(int saveCount) { 2278fb954263dd2f918ad339045cc6d82e346515599Romain Guy if (saveCount < 1) saveCount = 1; 228bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2298fb954263dd2f918ad339045cc6d82e346515599Romain Guy while (mSaveCount > saveCount) { 2302542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2317ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 232bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 233bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2348aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guyint OpenGLRenderer::saveSnapshot(int flags) { 2358aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mSnapshot, flags); 2368fb954263dd2f918ad339045cc6d82e346515599Romain Guy return mSaveCount++; 237bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 238bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 239bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::restoreSnapshot() { 2407ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = mSnapshot->flags & Snapshot::kFlagClipSet; 241bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy bool restoreLayer = mSnapshot->flags & Snapshot::kFlagIsLayer; 242bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 243bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy sp<Snapshot> current = mSnapshot; 2447ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy sp<Snapshot> previous = mSnapshot->previous; 245bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2468b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSaveCount--; 2478b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSnapshot = previous; 2488b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 249bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (restoreLayer) { 250d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy composeLayer(current, previous); 251d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 252bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2532542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (restoreClip) { 2542542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setScissorFromClip(); 2558fb954263dd2f918ad339045cc6d82e346515599Romain Guy } 2562542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 2572542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy return restoreClip; 258d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 2595cbbce535744b89df5ecea95de21ee3733298260Romain Guy 260f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 261bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy// Layers 262bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 263bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 264bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayer(float left, float top, float right, float bottom, 265bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const SkPaint* p, int flags) { 2668aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy int count = saveSnapshot(flags); 267d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 268d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int alpha = 255; 269d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy SkXfermode::Mode mode; 270d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 271d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (p) { 272d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy alpha = p->getAlpha(); 273a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 274a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 275a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 276a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 277a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 278a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 279a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 280a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 281d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 282d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } else { 283d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 284d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 285d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 286f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, mode, flags); 287d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 288d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 289bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 290bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 291bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayerAlpha(float left, float top, float right, float bottom, 292bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int alpha, int flags) { 2938aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy if (alpha == 0xff) { 2948aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, NULL, flags); 2958b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } else { 2968aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkPaint paint; 2978aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy paint.setAlpha(alpha); 2988aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, &paint, flags); 2998b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 300d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 301bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 3021c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 3031c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Layers are viewed by Skia are slightly different than layers in image editing 3041c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * programs (for instance.) When a layer is created, previously created layers 3051c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * and the frame buffer still receive every drawing command. For instance, if a 3061c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * layer is created and a shape intersecting the bounds of the layers and the 3071c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * framebuffer is draw, the shape will be drawn on both (unless the layer was 3081c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * created with the SkCanvas::kClipToLayer_SaveFlag flag.) 3091c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3101c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * A way to implement layers is to create an FBO for each layer, backed by an RGBA 3111c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * texture. Unfortunately, this is inefficient as it requires every primitive to 3121c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be drawn n + 1 times, where n is the number of active layers. In practice this 3131c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * means, for every primitive: 3141c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Switch active frame buffer 3151c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Change viewport, clip and projection matrix 3161c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Issue the drawing 3171c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3181c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Switching rendering target n + 1 times per drawn primitive is extremely costly. 3191c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * To avoid this, layers are implemented in a different way here. 3201c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3211c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * This implementation relies on the frame buffer being at least RGBA 8888. When 3221c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * a layer is created, only a texture is created, not an FBO. The content of the 3231c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer contained within the layer's bounds is copied into this texture 32487a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * using glCopyTexImage2D(). The layer's region is then cleared(1) in the frame 3251c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * buffer and drawing continues as normal. This technique therefore treats the 3261c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer as a scratch buffer for the layers. 3271c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3281c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * To compose the layers back onto the frame buffer, each layer texture 3291c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * (containing the original frame buffer data) is drawn as a simple quad over 3301c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * the frame buffer. The trick is that the quad is set as the composition 3311c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * destination in the blending equation, and the frame buffer becomes the source 3321c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * of the composition. 3331c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3341c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Drawing layers with an alpha value requires an extra step before composition. 3351c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * An empty quad is drawn over the layer's region in the frame buffer. This quad 3361c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is drawn with the rgba color (0,0,0,alpha). The alpha value offered by the 3371c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * quad is used to multiply the colors in the frame buffer. This is achieved by 3381c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * changing the GL blend functions for the GL_FUNC_ADD blend equation to 3391c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * GL_ZERO, GL_SRC_ALPHA. 3401c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3411c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Because glCopyTexImage2D() can be slow, an alternative implementation might 3421c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be use to draw a single clipped layer. The implementation described above 3431c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is correct in every case. 34487a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * 34587a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * (1) The frame buffer is actually not cleared right away. To allow the GPU 34687a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * to potentially optimize series of calls to glCopyTexImage2D, the frame 34787a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * buffer is left untouched until the first drawing operation. Only when 34887a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * something actually gets drawn are the layers regions cleared. 3491c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 350d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guybool OpenGLRenderer::createLayer(sp<Snapshot> snapshot, float left, float top, 351d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy float right, float bottom, int alpha, SkXfermode::Mode mode,int flags) { 352d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy LAYER_LOGD("Requesting layer %fx%f", right - left, bottom - top); 353fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy LAYER_LOGD("Layer cache size = %d", mCaches.layerCache.getSize()); 354dda570201ac851dd85af3861f7e575721d3345daRomain Guy 355f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Window coordinates of the layer 3568aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy Rect bounds(left, top, right, bottom); 357f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mSnapshot->transform->mapRect(bounds); 3588aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy 3598411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy // Layers only make sense if they are in the framebuffer's bounds 3608411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy bounds.intersect(*mSnapshot->clipRect); 361bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy bounds.snapToPixelBoundaries(); 362bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy 363b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy if (bounds.isEmpty() || bounds.getWidth() > mMaxTextureSize || 364b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy bounds.getHeight() > mMaxTextureSize) { 365b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy return false; 366b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 367dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3688411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy LayerSize size(bounds.getWidth(), bounds.getHeight()); 369f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy Layer* layer = mCaches.layerCache.get(size); 370f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy if (!layer) { 371f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy return false; 372bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 373bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 374dda570201ac851dd85af3861f7e575721d3345daRomain Guy layer->mode = mode; 375f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy layer->alpha = alpha; 3768aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy layer->layer.set(bounds); 377dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3788fb954263dd2f918ad339045cc6d82e346515599Romain Guy // Save the layer in the snapshot 3798fb954263dd2f918ad339045cc6d82e346515599Romain Guy snapshot->flags |= Snapshot::kFlagIsLayer; 380dda570201ac851dd85af3861f7e575721d3345daRomain Guy snapshot->layer = layer; 3811d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 382f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Copy the framebuffer into the layer 383f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBindTexture(GL_TEXTURE_2D, layer->texture); 384f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bounds.left, mHeight - bounds.bottom, 385f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy bounds.getWidth(), bounds.getHeight(), 0); 386f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 387f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (flags & SkCanvas::kClipToLayer_SaveFlag) { 3888694230ff25fa0a60e480d424843e56b718f0516Romain Guy if (mSnapshot->clipTransformed(bounds)) setScissorFromClip(); 389f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 390f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 3918694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Enqueue the buffer coordinates to clear the corresponding region later 3928694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.push(new Rect(bounds)); 393f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 394d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return true; 395bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 396bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 3971c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 3981c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Read the documentation of createLayer() before doing anything in this method. 3991c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 4001d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guyvoid OpenGLRenderer::composeLayer(sp<Snapshot> current, sp<Snapshot> previous) { 4011d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy if (!current->layer) { 4021d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LOGE("Attempting to compose a layer that does not exist"); 4031d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy return; 4041d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 4051d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4061d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Restore the clip from the previous snapshot 4078aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *previous->clipRect; 408f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 4091d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4101d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Layer* layer = current->layer; 4111d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy const Rect& rect = layer->layer; 4121d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 413f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (layer->alpha < 255) { 414f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawColorRect(rect.left, rect.top, rect.right, rect.bottom, 4151c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy layer->alpha << 24, SkXfermode::kDstIn_Mode, true); 416f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 417f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 418f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Layers are already drawn with a top-left origin, don't flip the texture 4198b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 1.0f, 1.0f, 0.0f); 4208b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 421f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawTextureMesh(rect.left, rect.top, rect.right, rect.bottom, layer->texture, 422f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 1.0f, layer->mode, layer->blend, &mMeshVertices[0].position[0], 4236820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mMeshVertices[0].texture[0], GL_TRIANGLE_STRIP, gMeshCount, true, true); 4241d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4258b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 4268b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 4271d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LayerSize size(rect.getWidth(), rect.getHeight()); 4281d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Failing to add the layer to the cache should happen only if the 4291d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // layer is too large 430fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (!mCaches.layerCache.put(size, layer)) { 4311d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LAYER_LOGD("Deleting layer"); 4321d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4331d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy glDeleteTextures(1, &layer->texture); 4341d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4351d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy delete layer; 4361d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 4371d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy} 4381d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4398694230ff25fa0a60e480d424843e56b718f0516Romain Guyvoid OpenGLRenderer::clearLayerRegions() { 4408694230ff25fa0a60e480d424843e56b718f0516Romain Guy if (mLayers.size() == 0) return; 4418694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4428694230ff25fa0a60e480d424843e56b718f0516Romain Guy for (uint32_t i = 0; i < mLayers.size(); i++) { 4438694230ff25fa0a60e480d424843e56b718f0516Romain Guy Rect* bounds = mLayers.itemAt(i); 4448694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4458694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Clear the framebuffer where the layer will draw 4468694230ff25fa0a60e480d424843e56b718f0516Romain Guy glScissor(bounds->left, mHeight - bounds->bottom, 4478694230ff25fa0a60e480d424843e56b718f0516Romain Guy bounds->getWidth(), bounds->getHeight()); 4488694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 4498694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClear(GL_COLOR_BUFFER_BIT); 4508694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4518694230ff25fa0a60e480d424843e56b718f0516Romain Guy delete bounds; 4528694230ff25fa0a60e480d424843e56b718f0516Romain Guy } 4538694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.clear(); 4548694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4558694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Restore the clip 4568694230ff25fa0a60e480d424843e56b718f0516Romain Guy setScissorFromClip(); 4578694230ff25fa0a60e480d424843e56b718f0516Romain Guy} 4588694230ff25fa0a60e480d424843e56b718f0516Romain Guy 459bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 460f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Transforms 461f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 462f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 463f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::translate(float dx, float dy) { 4648aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->translate(dx, dy, 0.0f); 465f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 466f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 467f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::rotate(float degrees) { 4688aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->rotate(degrees, 0.0f, 0.0f, 1.0f); 469f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 470f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 471f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::scale(float sx, float sy) { 4728aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->scale(sx, sy, 1.0f); 473f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 474f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 475f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::setMatrix(SkMatrix* matrix) { 4768aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->load(*matrix); 477f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 478f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 479f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::getMatrix(SkMatrix* matrix) { 4808aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->copyTo(*matrix); 481f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 482f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 483f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::concatMatrix(SkMatrix* matrix) { 4847ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mat4 m(*matrix); 4858aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->multiply(m); 486f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 487f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 488f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 489f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Clipping 490f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 491f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 492bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::setScissorFromClip() { 4938aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *mSnapshot->clipRect; 494f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 4959d5316e3f56d138504565ff311145ac01621dff4Romain Guy} 4969d5316e3f56d138504565ff311145ac01621dff4Romain Guy 4979d5316e3f56d138504565ff311145ac01621dff4Romain Guyconst Rect& OpenGLRenderer::getClipBounds() { 498079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return mSnapshot->getLocalClip(); 499bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 500bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 501c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guybool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) { 5021d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Rect r(left, top, right, bottom); 5038aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->mapRect(r); 5048aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->intersects(r); 505c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 506c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy 507079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guybool OpenGLRenderer::clipRect(float left, float top, float right, float bottom, SkRegion::Op op) { 508079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bool clipped = mSnapshot->clip(left, top, right, bottom, op); 5097ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (clipped) { 5107ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 5117ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 5128aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->isEmpty(); 513e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 514e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 515f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 516f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Drawing 517f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 518f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 519c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, float left, float top, const SkPaint* paint) { 5206926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float right = left + bitmap->width(); 5216926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float bottom = top + bitmap->height(); 5226926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 5236926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 5246926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5256926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5266926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 52761c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 528fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5299cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 53022158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 53122158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 5326926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy drawTextureRect(left, top, right, bottom, texture, paint); 5338ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 5348ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 535f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, const SkMatrix* matrix, const SkPaint* paint) { 536f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy Rect r(0.0f, 0.0f, bitmap->width(), bitmap->height()); 537f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const mat4 transform(*matrix); 538f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy transform.mapRect(r); 539f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 5406926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(r.left, r.top, r.right, r.bottom)) { 5416926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5426926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5436926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 54461c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 545fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5469cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 54722158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 54822158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 54982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(r.left, r.top, r.right, r.bottom, texture, paint); 550f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy} 551f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 5528ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, 5538ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float srcLeft, float srcTop, float srcRight, float srcBottom, 5548ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float dstLeft, float dstTop, float dstRight, float dstBottom, 555f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const SkPaint* paint) { 5566926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(dstLeft, dstTop, dstRight, dstBottom)) { 5576926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5586926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5596926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 56061c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 561fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5629cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 56322158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 5648ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 5658ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float width = texture->width; 5668ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float height = texture->height; 567c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 5688ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u1 = srcLeft / width; 5698ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v1 = srcTop / height; 5708ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u2 = srcRight / width; 5718ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v2 = srcBottom / height; 572c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 5738ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(u1, v1, u2, v2); 5748ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 57582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(dstLeft, dstTop, dstRight, dstBottom, texture, paint); 5768ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 5778ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 578ce0537b80087a6225273040a987414b1dd081aa0Romain Guy} 579ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 580deba785f122a47915756ffd991f5540d952cf937Romain Guyvoid OpenGLRenderer::drawPatch(SkBitmap* bitmap, Res_png_9patch* patch, 581deba785f122a47915756ffd991f5540d952cf937Romain Guy float left, float top, float right, float bottom, const SkPaint* paint) { 5826926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 5836926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5846926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5856926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 58661c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 587fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5889cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 58922158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 590f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 591f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy int alpha; 592f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy SkXfermode::Mode mode; 593f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy getAlphaAndMode(paint, &alpha, &mode); 594f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 595fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy Patch* mesh = mCaches.patchCache.get(patch); 596759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mesh->updateVertices(bitmap->width(), bitmap->height(),left, top, right, bottom, 597fb5e23c327cd5f8f93d1eaa7c10f34d6fd3efb6cRomain Guy &patch->xDivs[0], &patch->yDivs[0], patch->numXDivs, patch->numYDivs); 598f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 599f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // Specify right and bottom as +1.0f from left/top to prevent scaling since the 600f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // patch mesh already defines the final size 601a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, left + 1.0f, top + 1.0f, texture->id, alpha / 255.0f, 602a979474f15b454c8e2963f239a3770e200bb227cRomain Guy mode, texture->blend, &mesh->vertices[0].position[0], 6036820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mesh->vertices[0].texture[0], GL_TRIANGLES, mesh->verticesCount); 604f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 605f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 606759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guyvoid OpenGLRenderer::drawLines(float* points, int count, const SkPaint* paint) { 607759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy int alpha; 608759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy SkXfermode::Mode mode; 609759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy getAlphaAndMode(paint, &alpha, &mode); 610759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 611759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy uint32_t color = paint->getColor(); 612759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat a = alpha / 255.0f; 613759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 614759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 615759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 616759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 617c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const bool isAA = paint->isAntiAlias(); 618c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (isAA) { 619c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy GLuint textureUnit = 0; 62029d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy setupTextureAlpha8(mCaches.line.getTexture(), 0, 0, textureUnit, 0.0f, 0.0f, r, g, b, a, 62129d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy mode, false, true, mCaches.line.getVertices(), mCaches.line.getTexCoords()); 622c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } else { 623c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy setupColorRect(0.0f, 0.0f, 1.0f, 1.0f, r, g, b, a, mode, false); 624c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 625c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 626c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const float strokeWidth = paint->getStrokeWidth(); 62729d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy const GLsizei elementsCount = isAA ? mCaches.line.getElementsCount() : gMeshCount; 628c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy const GLenum drawMode = isAA ? GL_TRIANGLES : GL_TRIANGLE_STRIP; 629759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 630759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy for (int i = 0; i < count; i += 4) { 631759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy float tx = 0.0f; 632759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy float ty = 0.0f; 633759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 634c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (isAA) { 63529d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy mCaches.line.update(points[i], points[i + 1], points[i + 2], points[i + 3], 636c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy strokeWidth, tx, ty); 637c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } else { 638b5ab4173e0927e4668a45298c9900cd8007584e1Romain Guy ty = strokeWidth <= 1.0f ? 0.0f : -strokeWidth * 0.5f; 639c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 640759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 641759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float dx = points[i + 2] - points[i]; 642759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float dy = points[i + 3] - points[i + 1]; 643759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float mag = sqrtf(dx * dx + dy * dy); 644759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float angle = acos(dx / mag); 645759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 646759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.loadTranslate(points[i], points[i + 1], 0.0f); 647759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy if (angle > MIN_ANGLE || angle < -MIN_ANGLE) { 648759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.rotate(angle * RAD_TO_DEG, 0.0f, 0.0f, 1.0f); 649759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 650759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.translate(tx, ty, 0.0f); 651c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy if (!isAA) { 65229d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy float length = mCaches.line.getLength(points[i], points[i + 1], 65329d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy points[i + 2], points[i + 3]); 654c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy mModelView.scale(length, strokeWidth, 1.0f); 655c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy } 656759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 657759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 658759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy if (mShader) { 659759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mShader->updateTransforms(mCaches.currentProgram, mModelView, *mSnapshot); 660759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 661759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 662c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy glDrawArrays(drawMode, 0, elementsCount); 663759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 664759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 66529d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy if (isAA) { 66629d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 66729d8997bd43b7c4ad37fc3d6f91eaafa74913c88Romain Guy } 668759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy} 669759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 67085bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) { 6718aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *mSnapshot->clipRect; 6723d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode, true); 673c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 6749d5316e3f56d138504565ff311145ac01621dff4Romain Guy 675bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawRect(float left, float top, float right, float bottom, const SkPaint* p) { 6766926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 6776926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6786926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6796926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 680026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy SkXfermode::Mode mode; 681a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 682a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 683a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 684a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 685a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 686a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 687a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 688a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 689026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 690026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 691026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Skia draws using the color's alpha channel if < 255 692026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Otherwise, it uses the paint's alpha 693026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color = p->getColor(); 694d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (((color >> 24) & 0xff) == 255) { 695026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy color |= p->getAlpha() << 24; 696026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 697026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 698026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(left, top, right, bottom, color, mode); 699c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 7009d5316e3f56d138504565ff311145ac01621dff4Romain Guy 701e8e62a4a032a80409114a37908b5f18ab0080848Romain Guyvoid OpenGLRenderer::drawText(const char* text, int bytesCount, int count, 702e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy float x, float y, SkPaint* paint) { 703f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (text == NULL || count == 0 || (paint->getAlpha() == 0 && paint->getXfermode() == NULL)) { 704e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy return; 705e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 706f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy paint->setAntiAlias(true); 707e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 708a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy float length = -1.0f; 709e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy switch (paint->getTextAlign()) { 710e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kCenter_Align: 711e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 712e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length / 2.0f; 713e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 714e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kRight_Align: 715e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 716e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length; 717e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 718e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy default: 719e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 720e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 721e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 722694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy int alpha; 723694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy SkXfermode::Mode mode; 724694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy getAlphaAndMode(paint, &alpha, &mode); 725694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 7262542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy uint32_t color = paint->getColor(); 7272542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = alpha / 255.0f; 7282542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 7292542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 7302542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 7312542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 732b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy FontRenderer& fontRenderer = mCaches.fontRenderer.getFontRenderer(paint); 733b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.setFont(paint, SkTypeface::UniqueID(paint->getTypeface()), 734fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy paint->getTextSize()); 7351e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy if (mHasShadow) { 7361e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy glActiveTexture(gTextureUnits[0]); 737b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy mCaches.dropShadowCache.setFontRenderer(fontRenderer); 738fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const ShadowTexture* shadow = mCaches.dropShadowCache.get(paint, text, bytesCount, 7391e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy count, mShadowRadius); 7401e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy const AutoTexture autoCleanup(shadow); 7410a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7422542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setupShadow(shadow, x, y, mode, a); 7430a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7440a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 7450a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 746fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 7471e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy } 7481e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 74906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 750db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 75106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 752b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy setupTextureAlpha8(fontRenderer.getTexture(), 0, 0, textureUnit, x, y, r, g, b, a, 7530a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mode, false, true); 75406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 75509147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy const Rect& clip = mSnapshot->getLocalClip(); 7568694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 757b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.renderText(paint, &clip, text, 0, bytesCount, count, x, y); 758694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 759694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); 760fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 761a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy 7620a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawTextDecorations(text, bytesCount, length, x, y, paint); 763694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy} 764694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 7657fbcc0492fca03857e3c45064f4aa040af817d55Romain Guyvoid OpenGLRenderer::drawPath(SkPath* path, SkPaint* paint) { 7667fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy GLuint textureUnit = 0; 7677fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 7687fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 769fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const PathTexture* texture = mCaches.pathCache.get(path, paint); 7709cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 77122158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 7727fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7738b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float x = texture->left - texture->offset; 7748b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float y = texture->top - texture->offset; 7758b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 7768b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy if (quickReject(x, y, x + texture->width, y + texture->height)) { 7778b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy return; 7788b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 7798b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 7807fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy int alpha; 7817fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy SkXfermode::Mode mode; 7827fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy getAlphaAndMode(paint, &alpha, &mode); 7837fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7847fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy uint32_t color = paint->getColor(); 7857fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat a = alpha / 255.0f; 7867fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 7877fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 7887fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 7897fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, x, y, r, g, b, a, mode, true, true); 7910a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7928694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 7938694230ff25fa0a60e480d424843e56b718f0516Romain Guy 7940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 7950a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 796fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 7977fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy} 7987fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7996926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 800d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy// Shaders 801d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 802d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 803d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guyvoid OpenGLRenderer::resetShader() { 80406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 80506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy} 80606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 80706f96e2652e4855b6520ad9dd70583677605b79aRomain Guyvoid OpenGLRenderer::setupShader(SkiaShader* shader) { 80806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = shader; 80906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 810fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->set(&mCaches.textureCache, &mCaches.gradientCache); 81106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy } 8127fac2e18339f765320d759e8d4c090f92431959eRomain Guy} 8137fac2e18339f765320d759e8d4c090f92431959eRomain Guy 814d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 815db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy// Color filters 816db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 817db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 818db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::resetColorFilter() { 819db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 820db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 821db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 822db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::setupColorFilter(SkiaColorFilter* filter) { 823db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = filter; 824db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 825db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 826db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 8271e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy// Drop shadow 8281e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 8291e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 8301e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::resetShadow() { 8311e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 8321e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 8331e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 8341e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::setupShadow(float radius, float dx, float dy, int color) { 8351e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = true; 8361e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowRadius = radius; 8371e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDx = dx; 8381e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDy = dy; 8391e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowColor = color; 8401e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 8411e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 8421e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 8436926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy// Drawing implementation 8446926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 8456926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 8460a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupShadow(const ShadowTexture* texture, float x, float y, 8472542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy SkXfermode::Mode mode, float alpha) { 8480a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sx = x - texture->left + mShadowDx; 8490a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sy = y - texture->top + mShadowDy; 8500a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8512542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const int shadowAlpha = ((mShadowColor >> 24) & 0xFF); 8522542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = shadowAlpha < 255 ? shadowAlpha / 255.0f : alpha; 8530a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat r = a * ((mShadowColor >> 16) & 0xFF) / 255.0f; 8540a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat g = a * ((mShadowColor >> 8) & 0xFF) / 255.0f; 8550a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat b = a * ((mShadowColor ) & 0xFF) / 255.0f; 8560a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8570a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint textureUnit = 0; 8580a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, sx, sy, r, g, b, a, mode, true, false); 8590a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 8600a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8610a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(const Texture* texture, GLuint& textureUnit, 8620a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, float r, float g, float b, float a, SkXfermode::Mode mode, 8630a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bool transforms, bool applyFilters) { 8640a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture->id, texture->width, texture->height, textureUnit, 865759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy x, y, r, g, b, a, mode, transforms, applyFilters, 866759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0]); 8670a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 8680a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 8700a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 8710a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters) { 872759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy setupTextureAlpha8(texture, width, height, textureUnit, 873759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy x, y, r, g, b, a, mode, transforms, applyFilters, 874759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0]); 875759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy} 876759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 877759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 878759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 879759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters, 880759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy GLvoid* vertices, GLvoid* texCoords) { 8810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Describe the required shaders 8820a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy ProgramDescription description; 8830a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasTexture = true; 8840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasAlpha8Texture = true; 8850a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8860a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 8870a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 8880a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mShader->describe(description, mExtensions); 8890a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 8910a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mColorFilter->describe(description, mExtensions); 8920a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8930a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 895a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Setup the blending mode 896a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy chooseBlending(true, mode, description); 897a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 8980a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Build and use the appropriate shader 899fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 9000a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9010a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, textureUnit); 902fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), textureUnit); 9030a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 904fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 9050a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glEnableVertexAttribArray(texCoordsSlot); 9060a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9070a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes 908fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 909759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy gMeshStride, vertices); 9100a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, 911759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy gMeshStride, texCoords); 9120a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9130a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup uniforms 9140a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (transforms) { 9150a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadTranslate(x, y, 0.0f); 9160a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.scale(width, height, 1.0f); 9170a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } else { 9180a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadIdentity(); 9190a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9208aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 921fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, r, g, b, a); 9220a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9230a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy textureUnit++; 9240a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 9250a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes and uniforms required by the shaders 9260a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 927fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 9280a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9290a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 930fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 9310a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9320a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9330a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 9340a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 935f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy// Same values used by Skia 9360a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdStrikeThru_Offset (-6.0f / 21.0f) 9370a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Offset (1.0f / 9.0f) 9380a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Thickness (1.0f / 18.0f) 9390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9400a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::drawTextDecorations(const char* text, int bytesCount, float length, 9410a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, SkPaint* paint) { 9420a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Handle underline and strike-through 9430a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy uint32_t flags = paint->getFlags(); 9440a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) { 9450a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float underlineWidth = length; 9460a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // If length is > 0.0f, we already measured the text for the text alignment 9470a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (length <= 0.0f) { 9480a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy underlineWidth = paint->measureText(text, bytesCount); 9490a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9500a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9510a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float offsetX = 0; 9520a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy switch (paint->getTextAlign()) { 9530a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kCenter_Align: 9540a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth * 0.5f; 9550a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 9560a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kRight_Align: 9570a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth; 9580a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 9590a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy default: 9600a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 9610a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9620a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9630a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (underlineWidth > 0.0f) { 9640a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float textSize = paint->getTextSize(); 9650a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float height = textSize * kStdUnderline_Thickness; 9660a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9670a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float left = x - offsetX; 9680a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float top = 0.0f; 9690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float right = left + underlineWidth; 9700a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float bottom = 0.0f; 9710a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9720a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kUnderlineText_Flag) { 9730a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdUnderline_Offset; 9740a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bottom = top + height; 9750a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawRect(left, top, right, bottom, paint); 9760a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9770a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9780a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kStrikeThruText_Flag) { 9790a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdStrikeThru_Offset; 9800a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bottom = top + height; 9810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawRect(left, top, right, bottom, paint); 9820a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9830a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9850a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 9860a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 987026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, 9881c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy int color, SkXfermode::Mode mode, bool ignoreTransform) { 9898694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 9908694230ff25fa0a60e480d424843e56b718f0516Romain Guy 991d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // If a shader is set, preserve only the alpha 99206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 993d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy color |= 0x00ffffff; 994d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 995d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 996d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // Render using pre-multiplied alpha 997026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const int alpha = (color >> 24) & 0xFF; 998d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy const GLfloat a = alpha / 255.0f; 999c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 1000c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 1001c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 1002c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 1003c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy setupColorRect(left, top, right, bottom, r, g, b, a, mode, ignoreTransform); 1004c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 1005c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy // Draw the mesh 1006c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 1007c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy} 1008c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy 1009c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guyvoid OpenGLRenderer::setupColorRect(float left, float top, float right, float bottom, 1010c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy float r, float g, float b, float a, SkXfermode::Mode mode, bool ignoreTransform) { 101106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 10129d5316e3f56d138504565ff311145ac01621dff4Romain Guy 101306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Describe the required shaders 1014889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 101506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 101606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader->describe(description, mExtensions); 1017c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 1018db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1019db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 1020db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1021c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 10221c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy // Setup the blending mode 1023c95c8d6bf8fda5c4e8ebd0033b789be7868e6e07Romain Guy chooseBlending(a < 1.0f || (mShader && mShader->blend()), mode, description); 1024a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 102506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Build and use the appropriate shader 1026fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 1027c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 102806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes 1029fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1030ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, &mMeshVertices[0].position[0]); 1031c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 103206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup uniforms 1033889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.loadTranslate(left, top, 0.0f); 1034889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 103506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (!ignoreTransform) { 10368aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1037889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } else { 103806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mat4 identity; 1039fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, identity); 1040889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 1041fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, r, g, b, a); 1042d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 104306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes and uniforms required by the shaders 104406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 1045fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 1046d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 1047db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1048fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1049db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1050d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy} 1051d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 105282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 1053a979474f15b454c8e2963f239a3770e200bb227cRomain Guy const Texture* texture, const SkPaint* paint) { 105482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy int alpha; 105582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy SkXfermode::Mode mode; 105682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy getAlphaAndMode(paint, &alpha, &mode); 105782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 10586820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy drawTextureMesh(left, top, right, bottom, texture->id, alpha / 255.0f, mode, 10596820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy texture->blend, &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], 10606820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GL_TRIANGLE_STRIP, gMeshCount); 106185bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy} 106285bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 1063bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 1064a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend) { 1065a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, right, bottom, texture, alpha, mode, blend, 10666820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], 10676820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GL_TRIANGLE_STRIP, gMeshCount); 1068f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 1069f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 1070f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guyvoid OpenGLRenderer::drawTextureMesh(float left, float top, float right, float bottom, 1071a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend, 10726820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, 1073f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy bool swapSrcDst, bool ignoreTransform) { 10748694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 10758694230ff25fa0a60e480d424843e56b718f0516Romain Guy 1076889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 1077889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasTexture = true; 1078db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1079db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 1080db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1081889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 1082bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.loadTranslate(left, top, 0.0f); 1083bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.scale(right - left, bottom - top, 1.0f); 1084bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1085f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy chooseBlending(blend || alpha < 1.0f, mode, description, swapSrcDst); 1086a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1087fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 1088f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (!ignoreTransform) { 1089f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1090f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } else { 1091f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mat4 m; 1092f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, m); 1093f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 1094bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1095889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Texture 109606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, 0); 1097fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), 0); 1098c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 1099a979474f15b454c8e2963f239a3770e200bb227cRomain Guy // Always premultiplied 1100fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, alpha, alpha, alpha, alpha); 1101bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1102889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Mesh 1103fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 1104889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glEnableVertexAttribArray(texCoordsSlot); 1105fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1106ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, vertices); 1107889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, gMeshStride, texCoords); 1108bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1109db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy // Color filter 1110db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1111fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1112db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1113db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 11146820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy glDrawArrays(drawMode, 0, elementsCount); 1115889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDisableVertexAttribArray(texCoordsSlot); 111682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy} 111782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1118a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guyvoid OpenGLRenderer::chooseBlending(bool blend, SkXfermode::Mode mode, 1119f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy ProgramDescription& description, bool swapSrcDst) { 112082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy blend = blend || mode != SkXfermode::kSrcOver_Mode; 112182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy if (blend) { 1122a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode < SkXfermode::kPlus_Mode) { 1123a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mCaches.blend) { 1124a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glEnable(GL_BLEND); 1125a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 112682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1127f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum sourceMode = swapSrcDst ? gBlendsSwap[mode].src : gBlends[mode].src; 1128f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum destMode = swapSrcDst ? gBlendsSwap[mode].dst : gBlends[mode].dst; 112982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1130a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (sourceMode != mCaches.lastSrcMode || destMode != mCaches.lastDstMode) { 1131a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glBlendFunc(sourceMode, destMode); 1132a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastSrcMode = sourceMode; 1133a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastDstMode = destMode; 1134a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1135a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1136a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // These blend modes are not supported by OpenGL directly and have 1137a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // to be implemented using shaders. Since the shader will perform 1138a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // the blending, turn blending off here 1139a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mExtensions.hasFramebufferFetch()) { 1140a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy description.framebufferMode = mode; 1141f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy description.swapSrcDst = swapSrcDst; 1142a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1143a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1144a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mCaches.blend) { 1145a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glDisable(GL_BLEND); 1146a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1147a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy blend = false; 114882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1149fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy } else if (mCaches.blend) { 115082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy glDisable(GL_BLEND); 115182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1152fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.blend = blend; 1153bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 1154bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1155889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guybool OpenGLRenderer::useProgram(Program* program) { 1156d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (!program->isInUse()) { 1157fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (mCaches.currentProgram != NULL) mCaches.currentProgram->remove(); 1158d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy program->use(); 1159fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram = program; 11606926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return false; 1161260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy } 11626926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return true; 1163260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy} 1164260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy 1165026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) { 1166ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy TextureVertex* v = &mMeshVertices[0]; 116782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v1); 116882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v1); 116982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v2); 117082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v2); 11718ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 11728ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 11738ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) { 11748ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (paint) { 1175a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 1176a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(paint->getXfermode(), mode); 1177a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 1178a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 1179a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = SkXfermode::kSrcOver_Mode; 1180a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1181a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1182a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = getXfermode(paint->getXfermode()); 11838ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 11848ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 11858ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Skia draws using the color's alpha channel if < 255 11868ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Otherwise, it uses the paint's alpha 11878ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy int color = paint->getColor(); 11888ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = (color >> 24) & 0xFF; 11898ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (*alpha == 255) { 11908ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = paint->getAlpha(); 11918ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 11928ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } else { 11938ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *mode = SkXfermode::kSrcOver_Mode; 11948ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = 255; 11958ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 1196026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy} 1197026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 1198a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain GuySkXfermode::Mode OpenGLRenderer::getXfermode(SkXfermode* mode) { 1199a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode == NULL) { 1200a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return SkXfermode::kSrcOver_Mode; 1201a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1202a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return mode->fMode; 1203a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy} 1204a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1205889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guyvoid OpenGLRenderer::bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT, GLuint textureUnit) { 1206889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glActiveTexture(gTextureUnits[textureUnit]); 1207ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 1208a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrapS); 1209a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrapT); 1210a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy} 1211a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy 12129d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 1213e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy}; // namespace android 1214