OpenGLRenderer.cpp revision 889f8d1403761d5668115ced6cbb3f767cfe966d
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 26121e2242565d5f09ad83a2d33ecd2225838802c5Romain Guy#include <cutils/properties.h> 275cbbce535744b89df5ecea95de21ee3733298260Romain Guy#include <utils/Log.h> 2885bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 2985bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy#include "OpenGLRenderer.h" 3051769a68a5cb34e9564740c6a854fcb93018789dRomain Guy#include "Properties.h" 31e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 32e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guynamespace android { 339d5316e3f56d138504565ff311145ac01621dff4Romain Guynamespace uirenderer { 349d5316e3f56d138504565ff311145ac01621dff4Romain Guy 359d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 369d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Defines 379d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 389d5316e3f56d138504565ff311145ac01621dff4Romain Guy 39c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy#define DEFAULT_TEXTURE_CACHE_SIZE 20.0f 40c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy#define DEFAULT_LAYER_CACHE_SIZE 10.0f 41f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy#define DEFAULT_PATCH_CACHE_SIZE 100 42c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy#define DEFAULT_GRADIENT_CACHE_SIZE 0.5f 43dda570201ac851dd85af3861f7e575721d3345daRomain Guy 44121e2242565d5f09ad83a2d33ecd2225838802c5Romain Guy// Converts a number of mega-bytes into bytes 45121e2242565d5f09ad83a2d33ecd2225838802c5Romain Guy#define MB(s) s * 1024 * 1024 46121e2242565d5f09ad83a2d33ecd2225838802c5Romain Guy 47dda570201ac851dd85af3861f7e575721d3345daRomain Guy// Generates simple and textured vertices 48bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#define FV(x, y, u, v) { { x, y }, { u, v } } 499d5316e3f56d138504565ff311145ac01621dff4Romain Guy 509d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 519d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Globals 529d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 539d5316e3f56d138504565ff311145ac01621dff4Romain Guy 54026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// This array is never used directly but used as a memcpy source in the 55026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// OpenGLRenderer constructor 56ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const TextureVertex gMeshVertices[] = { 57c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 0.0f, 0.0f, 0.0f), 58c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 0.0f, 1.0f, 0.0f), 59c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 1.0f, 0.0f, 1.0f), 60c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 1.0f, 1.0f, 1.0f) 61bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy}; 62ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshStride = sizeof(TextureVertex); 63ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshCount = 4; 64026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 65889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy/** 66889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy * Structure mapping Skia xfermodes to OpenGL blending factors. 67889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy */ 68889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystruct Blender { 69889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy SkXfermode::Mode mode; 70889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum src; 71889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum dst; 72889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy}; // struct Blender 73889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 74026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// In this array, the index of each Blender equals the value of the first 75026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// entry. For instance, gBlends[1] == gBlends[SkXfermode::kSrc_Mode] 76026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const Blender gBlends[] = { 77026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 78026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrc_Mode, GL_ONE, GL_ZERO }, 79026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDst_Mode, GL_ZERO, GL_ONE }, 80026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 81026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 82026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcIn_Mode, GL_DST_ALPHA, GL_ZERO }, 83026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 84026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 85026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 86026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 87026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 88026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 89026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy}; 90e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 91d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guystatic const GLint gTileModes[] = { 92889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GL_CLAMP_TO_EDGE, // SkShader::kClamp_TileMode 93889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GL_REPEAT, // SkShader::kRepeat_Mode 94889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GL_MIRRORED_REPEAT // SkShader::kMirror_TileMode 95889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy}; 96889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 97889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystatic const GLenum gTextureUnits[] = { 98889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GL_TEXTURE0, // Bitmap or text 99889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GL_TEXTURE1, // Gradient 100889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GL_TEXTURE2 // Bitmap shader 101d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy}; 102d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 103f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 104f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Constructors/destructor 105f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 106f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 107dda570201ac851dd85af3861f7e575721d3345daRomain GuyOpenGLRenderer::OpenGLRenderer(): 10882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy mBlend(false), mLastSrcMode(GL_ZERO), mLastDstMode(GL_ZERO), 109dda570201ac851dd85af3861f7e575721d3345daRomain Guy mTextureCache(MB(DEFAULT_TEXTURE_CACHE_SIZE)), 110f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy mLayerCache(MB(DEFAULT_LAYER_CACHE_SIZE)), 111c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mGradientCache(MB(DEFAULT_GRADIENT_CACHE_SIZE)), 112f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy mPatchCache(DEFAULT_PATCH_CACHE_SIZE) { 11385bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Create OpenGLRenderer"); 1149d5316e3f56d138504565ff311145ac01621dff4Romain Guy 115121e2242565d5f09ad83a2d33ecd2225838802c5Romain Guy char property[PROPERTY_VALUE_MAX]; 116121e2242565d5f09ad83a2d33ecd2225838802c5Romain Guy if (property_get(PROPERTY_TEXTURE_CACHE_SIZE, property, NULL) > 0) { 117dda570201ac851dd85af3861f7e575721d3345daRomain Guy LOGD(" Setting texture cache size to %sMB", property); 118c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mTextureCache.setMaxSize(MB(atof(property))); 119dda570201ac851dd85af3861f7e575721d3345daRomain Guy } else { 120c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy LOGD(" Using default texture cache size of %.2fMB", DEFAULT_TEXTURE_CACHE_SIZE); 121dda570201ac851dd85af3861f7e575721d3345daRomain Guy } 122dda570201ac851dd85af3861f7e575721d3345daRomain Guy 123dda570201ac851dd85af3861f7e575721d3345daRomain Guy if (property_get(PROPERTY_LAYER_CACHE_SIZE, property, NULL) > 0) { 124dda570201ac851dd85af3861f7e575721d3345daRomain Guy LOGD(" Setting layer cache size to %sMB", property); 125c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mLayerCache.setMaxSize(MB(atof(property))); 126dda570201ac851dd85af3861f7e575721d3345daRomain Guy } else { 127c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy LOGD(" Using default layer cache size of %.2fMB", DEFAULT_LAYER_CACHE_SIZE); 128c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 129c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 130c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy if (property_get(PROPERTY_GRADIENT_CACHE_SIZE, property, NULL) > 0) { 131c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy LOGD(" Setting gradient cache size to %sMB", property); 132c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mLayerCache.setMaxSize(MB(atof(property))); 133c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } else { 134c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy LOGD(" Using default gradient cache size of %.2fMB", DEFAULT_GRADIENT_CACHE_SIZE); 135121e2242565d5f09ad83a2d33ecd2225838802c5Romain Guy } 136121e2242565d5f09ad83a2d33ecd2225838802c5Romain Guy 137889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mCurrentProgram = NULL; 138d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 139d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy mShader = kShaderNone; 140a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy mShaderTileX = GL_CLAMP_TO_EDGE; 141a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy mShaderTileY = GL_CLAMP_TO_EDGE; 142d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy mShaderMatrix = NULL; 143d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy mShaderBitmap = NULL; 144026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 145ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy memcpy(mMeshVertices, gMeshVertices, sizeof(gMeshVertices)); 146ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy 147889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &mMaxTextureUnits); 148889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy if (mMaxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) { 149889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy LOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT); 150889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 151889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mLastTexture[0] = mLastTexture[1] = mLastTexture[2] = 0; 152e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 153e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 15485bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain GuyOpenGLRenderer::~OpenGLRenderer() { 15585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Destroy OpenGLRenderer"); 156ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 157ce0537b80087a6225273040a987414b1dd081aa0Romain Guy mTextureCache.clear(); 158dda570201ac851dd85af3861f7e575721d3345daRomain Guy mLayerCache.clear(); 159c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mGradientCache.clear(); 1606926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy mPatchCache.clear(); 161e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 162e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 163f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 164f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Setup 165f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 166f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 16785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::setViewport(int width, int height) { 16808ae317c21ec3086b5017672bba87420cc38a407Romain Guy glViewport(0, 0, width, height); 16908ae317c21ec3086b5017672bba87420cc38a407Romain Guy 170260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy mOrthoMatrix.loadOrtho(0, width, height, 0, -1, 1); 171bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 172bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mWidth = width; 173bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mHeight = height; 174f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy mFirstSnapshot.height = height; 175e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 176e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 17785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::prepare() { 1787ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot = &mFirstSnapshot; 1797ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSaveCount = 0; 180f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 18108ae317c21ec3086b5017672bba87420cc38a407Romain Guy glDisable(GL_SCISSOR_TEST); 182bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 18308ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 18408ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClear(GL_COLOR_BUFFER_BIT); 185bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 18608ae317c21ec3086b5017672bba87420cc38a407Romain Guy glEnable(GL_SCISSOR_TEST); 187c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glScissor(0, 0, mWidth, mHeight); 188f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 189bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mSnapshot->clipRect.set(0.0f, 0.0f, mWidth, mHeight); 190bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 191bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 192f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 193f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// State management 194f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 195f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 196bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::getSaveCount() const { 1977ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSaveCount; 198bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 199bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 200bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::save(int flags) { 2017ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return saveSnapshot(); 202bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 203bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 204bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restore() { 2057ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (mSaveCount == 0) return; 206bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2077ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (restoreSnapshot()) { 2087ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 2097ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 210bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 211bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 212bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restoreToCount(int saveCount) { 2137ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (saveCount <= 0 || saveCount > mSaveCount) return; 214bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2157ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = false; 216bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2177ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy while (mSaveCount != saveCount - 1) { 2187ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy restoreClip |= restoreSnapshot(); 2197ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 220bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2217ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (restoreClip) { 2227ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 2237ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 224bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 225bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 226bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::saveSnapshot() { 2277ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot = new Snapshot(mSnapshot); 2287ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return ++mSaveCount; 229bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 230bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 231bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::restoreSnapshot() { 2327ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = mSnapshot->flags & Snapshot::kFlagClipSet; 233bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy bool restoreLayer = mSnapshot->flags & Snapshot::kFlagIsLayer; 234f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy bool restoreOrtho = mSnapshot->flags & Snapshot::kFlagDirtyOrtho; 235bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 236bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy sp<Snapshot> current = mSnapshot; 2377ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy sp<Snapshot> previous = mSnapshot->previous; 238bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 239f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy if (restoreOrtho) { 240260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy mOrthoMatrix.load(current->orthoMatrix); 241f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy } 242f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 243bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (restoreLayer) { 244d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy composeLayer(current, previous); 245d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 246bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 247d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mSnapshot = previous; 248d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mSaveCount--; 2495cbbce535744b89df5ecea95de21ee3733298260Romain Guy 250d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return restoreClip; 251d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 2525cbbce535744b89df5ecea95de21ee3733298260Romain Guy 253d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guyvoid OpenGLRenderer::composeLayer(sp<Snapshot> current, sp<Snapshot> previous) { 254dda570201ac851dd85af3861f7e575721d3345daRomain Guy if (!current->layer) { 255dda570201ac851dd85af3861f7e575721d3345daRomain Guy LOGE("Attempting to compose a layer that does not exist"); 256dda570201ac851dd85af3861f7e575721d3345daRomain Guy return; 257dda570201ac851dd85af3861f7e575721d3345daRomain Guy } 258dda570201ac851dd85af3861f7e575721d3345daRomain Guy 259d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Unbind current FBO and restore previous one 260d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Most of the time, previous->fbo will be 0 to bind the default buffer 261d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glBindFramebuffer(GL_FRAMEBUFFER, previous->fbo); 2625cbbce535744b89df5ecea95de21ee3733298260Romain Guy 263d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Restore the clip from the previous snapshot 264079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy const Rect& clip = previous->clipRect; 265d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 266bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 267dda570201ac851dd85af3861f7e575721d3345daRomain Guy Layer* layer = current->layer; 268dda570201ac851dd85af3861f7e575721d3345daRomain Guy 269d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Compute the correct texture coordinates for the FBO texture 270d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // The texture is currently as big as the window but drawn with 271d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // a quad of the appropriate size 272dda570201ac851dd85af3861f7e575721d3345daRomain Guy const Rect& rect = layer->layer; 273dda570201ac851dd85af3861f7e575721d3345daRomain Guy 274dda570201ac851dd85af3861f7e575721d3345daRomain Guy drawTextureRect(rect.left, rect.top, rect.right, rect.bottom, 275a979474f15b454c8e2963f239a3770e200bb227cRomain Guy layer->texture, layer->alpha, layer->mode, layer->blend); 276bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 277dda570201ac851dd85af3861f7e575721d3345daRomain Guy LayerSize size(rect.getWidth(), rect.getHeight()); 278f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy // Failing to add the layer to the cache should happen only if the 279f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy // layer is too large 280dda570201ac851dd85af3861f7e575721d3345daRomain Guy if (!mLayerCache.put(size, layer)) { 281dda570201ac851dd85af3861f7e575721d3345daRomain Guy LAYER_LOGD("Deleting layer"); 282bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 283dda570201ac851dd85af3861f7e575721d3345daRomain Guy glDeleteFramebuffers(1, &layer->fbo); 284dda570201ac851dd85af3861f7e575721d3345daRomain Guy glDeleteTextures(1, &layer->texture); 285dda570201ac851dd85af3861f7e575721d3345daRomain Guy 286dda570201ac851dd85af3861f7e575721d3345daRomain Guy delete layer; 287dda570201ac851dd85af3861f7e575721d3345daRomain Guy } 288bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 289bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 290f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 291bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy// Layers 292bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 293bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 294bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayer(float left, float top, float right, float bottom, 295bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const SkPaint* p, int flags) { 296d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int count = saveSnapshot(); 297d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 298d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int alpha = 255; 299d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy SkXfermode::Mode mode; 300d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 301d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (p) { 302d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy alpha = p->getAlpha(); 303d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 304d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (!isMode) { 305d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Assume SRC_OVER 306d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 307d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 308d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } else { 309d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 310d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 311d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 312d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, mode, flags); 313d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 314d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 315bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 316bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 317bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayerAlpha(float left, float top, float right, float bottom, 318bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int alpha, int flags) { 319bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int count = saveSnapshot(); 320d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, SkXfermode::kSrcOver_Mode, flags); 321d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 322d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 323bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 324d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guybool OpenGLRenderer::createLayer(sp<Snapshot> snapshot, float left, float top, 325d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy float right, float bottom, int alpha, SkXfermode::Mode mode,int flags) { 326bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 327d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy LAYER_LOGD("Requesting layer %fx%f", right - left, bottom - top); 328dda570201ac851dd85af3861f7e575721d3345daRomain Guy LAYER_LOGD("Layer cache size = %d", mLayerCache.getSize()); 329dda570201ac851dd85af3861f7e575721d3345daRomain Guy 330f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy GLuint previousFbo = snapshot->previous.get() ? snapshot->previous->fbo : 0; 331f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy LayerSize size(right - left, bottom - top); 332dda570201ac851dd85af3861f7e575721d3345daRomain Guy 333f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy Layer* layer = mLayerCache.get(size, previousFbo); 334f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy if (!layer) { 335f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy return false; 336bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 337bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 338f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy glBindFramebuffer(GL_FRAMEBUFFER, layer->fbo); 339f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy 340f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy // Clear the FBO 341f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy glDisable(GL_SCISSOR_TEST); 342f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 343f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy glClear(GL_COLOR_BUFFER_BIT); 344f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy glEnable(GL_SCISSOR_TEST); 345f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 346dda570201ac851dd85af3861f7e575721d3345daRomain Guy // Save the layer in the snapshot 347d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy snapshot->flags |= Snapshot::kFlagIsLayer; 348dda570201ac851dd85af3861f7e575721d3345daRomain Guy layer->mode = mode; 349dda570201ac851dd85af3861f7e575721d3345daRomain Guy layer->alpha = alpha / 255.0f; 350dda570201ac851dd85af3861f7e575721d3345daRomain Guy layer->layer.set(left, top, right, bottom); 351dda570201ac851dd85af3861f7e575721d3345daRomain Guy 352dda570201ac851dd85af3861f7e575721d3345daRomain Guy snapshot->layer = layer; 353dda570201ac851dd85af3861f7e575721d3345daRomain Guy snapshot->fbo = layer->fbo; 354d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 355f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy // Creates a new snapshot to draw into the FBO 356f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy saveSnapshot(); 357f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy // TODO: This doesn't preserve other transformations (check Skia first) 358f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy mSnapshot->transform.loadTranslate(-left, -top, 0.0f); 359079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy mSnapshot->setClip(0.0f, 0.0f, right - left, bottom - top); 360f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy mSnapshot->height = bottom - top; 361f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy setScissorFromClip(); 362f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 363079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy mSnapshot->flags = Snapshot::kFlagDirtyOrtho | Snapshot::kFlagClipSet; 364260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy mSnapshot->orthoMatrix.load(mOrthoMatrix); 365f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 366f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy // Change the ortho projection 367260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy mOrthoMatrix.loadOrtho(0.0f, right - left, bottom - top, 0.0f, 0.0f, 1.0f); 368f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 369d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return true; 370bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 371bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 372bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 373f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Transforms 374f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 375f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 376f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::translate(float dx, float dy) { 3777ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.translate(dx, dy, 0.0f); 378f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 379f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 380f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::rotate(float degrees) { 3817ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.rotate(degrees, 0.0f, 0.0f, 1.0f); 382f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 383f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 384f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::scale(float sx, float sy) { 3857ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.scale(sx, sy, 1.0f); 386f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 387f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 388f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::setMatrix(SkMatrix* matrix) { 3897ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.load(*matrix); 390f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 391f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 392f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::getMatrix(SkMatrix* matrix) { 3937ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.copyTo(*matrix); 394f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 395f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 396f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::concatMatrix(SkMatrix* matrix) { 3977ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mat4 m(*matrix); 3987ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.multiply(m); 399f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 400f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 401f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 402f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Clipping 403f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 404f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 405bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::setScissorFromClip() { 406079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy const Rect& clip = mSnapshot->clipRect; 407f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy glScissor(clip.left, mSnapshot->height - clip.bottom, clip.getWidth(), clip.getHeight()); 4089d5316e3f56d138504565ff311145ac01621dff4Romain Guy} 4099d5316e3f56d138504565ff311145ac01621dff4Romain Guy 4109d5316e3f56d138504565ff311145ac01621dff4Romain Guyconst Rect& OpenGLRenderer::getClipBounds() { 411079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return mSnapshot->getLocalClip(); 412bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 413bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 414c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guybool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) { 415c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy Rect r(left, top, right, bottom); 416079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy mSnapshot->transform.mapRect(r); 417c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy return !mSnapshot->clipRect.intersects(r); 418c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 419c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy 420079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guybool OpenGLRenderer::clipRect(float left, float top, float right, float bottom, SkRegion::Op op) { 421079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bool clipped = mSnapshot->clip(left, top, right, bottom, op); 4227ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (clipped) { 4237ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 4247ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 425079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return !mSnapshot->clipRect.isEmpty(); 426e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 427e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 428f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 429f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Drawing 430f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 431f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 432c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, float left, float top, const SkPaint* paint) { 4336926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float right = left + bitmap->width(); 4346926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float bottom = top + bitmap->height(); 4356926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 4366926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 4376926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 4386926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 4396926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 440f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const Texture* texture = mTextureCache.get(bitmap); 4416926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy drawTextureRect(left, top, right, bottom, texture, paint); 4428ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 4438ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 444f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, const SkMatrix* matrix, const SkPaint* paint) { 445f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy Rect r(0.0f, 0.0f, bitmap->width(), bitmap->height()); 446f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const mat4 transform(*matrix); 447f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy transform.mapRect(r); 448f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 4496926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(r.left, r.top, r.right, r.bottom)) { 4506926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 4516926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 4526926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 453f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const Texture* texture = mTextureCache.get(bitmap); 45482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(r.left, r.top, r.right, r.bottom, texture, paint); 455f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy} 456f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 4578ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, 4588ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float srcLeft, float srcTop, float srcRight, float srcBottom, 4598ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float dstLeft, float dstTop, float dstRight, float dstBottom, 460f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const SkPaint* paint) { 4616926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(dstLeft, dstTop, dstRight, dstBottom)) { 4626926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 4636926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 4646926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 465f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const Texture* texture = mTextureCache.get(bitmap); 4668ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 4678ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float width = texture->width; 4688ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float height = texture->height; 469c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 4708ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u1 = srcLeft / width; 4718ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v1 = srcTop / height; 4728ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u2 = srcRight / width; 4738ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v2 = srcBottom / height; 474c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 475889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // TODO: Do this in the shader 4768ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(u1, v1, u2, v2); 4778ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 47882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(dstLeft, dstTop, dstRight, dstBottom, texture, paint); 4798ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 4808ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 481ce0537b80087a6225273040a987414b1dd081aa0Romain Guy} 482ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 483deba785f122a47915756ffd991f5540d952cf937Romain Guyvoid OpenGLRenderer::drawPatch(SkBitmap* bitmap, Res_png_9patch* patch, 484deba785f122a47915756ffd991f5540d952cf937Romain Guy float left, float top, float right, float bottom, const SkPaint* paint) { 4856926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 4866926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 4876926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 4886926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 489f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy const Texture* texture = mTextureCache.get(bitmap); 490f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 491f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy int alpha; 492f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy SkXfermode::Mode mode; 493f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy getAlphaAndMode(paint, &alpha, &mode); 494f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 495f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy Patch* mesh = mPatchCache.get(patch); 496fb5e23c327cd5f8f93d1eaa7c10f34d6fd3efb6cRomain Guy mesh->updateVertices(bitmap, left, top, right, bottom, 497fb5e23c327cd5f8f93d1eaa7c10f34d6fd3efb6cRomain Guy &patch->xDivs[0], &patch->yDivs[0], patch->numXDivs, patch->numYDivs); 498f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 499f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // Specify right and bottom as +1.0f from left/top to prevent scaling since the 500f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // patch mesh already defines the final size 501a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, left + 1.0f, top + 1.0f, texture->id, alpha / 255.0f, 502a979474f15b454c8e2963f239a3770e200bb227cRomain Guy mode, texture->blend, &mesh->vertices[0].position[0], 50316202fc9745e9b11db089ebc8f40119d13732016Romain Guy &mesh->vertices[0].texture[0], mesh->indices, mesh->indicesCount); 504f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 505f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 50685bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) { 507079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy const Rect& clip = mSnapshot->clipRect; 5083d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode, true); 509c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 5109d5316e3f56d138504565ff311145ac01621dff4Romain Guy 511bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawRect(float left, float top, float right, float bottom, const SkPaint* p) { 5126926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 5136926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5146926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5156926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 516026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy SkXfermode::Mode mode; 517026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 518026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 519026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (!isMode) { 520026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Assume SRC_OVER 521026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mode = SkXfermode::kSrcOver_Mode; 522026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 523026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 524026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Skia draws using the color's alpha channel if < 255 525026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Otherwise, it uses the paint's alpha 526026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color = p->getColor(); 527d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (((color >> 24) & 0xff) == 255) { 528026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy color |= p->getAlpha() << 24; 529026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 530026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 531026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(left, top, right, bottom, color, mode); 532c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 5339d5316e3f56d138504565ff311145ac01621dff4Romain Guy 534e8e62a4a032a80409114a37908b5f18ab0080848Romain Guyvoid OpenGLRenderer::drawText(const char* text, int bytesCount, int count, 535e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy float x, float y, SkPaint* paint) { 536e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy if (text == NULL || count == 0 || (paint->getAlpha() == 0 && paint->getXfermode() == NULL)) { 537e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy return; 538e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 539e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 540889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glActiveTexture(GL_TEXTURE0); 541889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 542e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy float length; 543e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy switch (paint->getTextAlign()) { 544e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kCenter_Align: 545e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 546e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length / 2.0f; 547e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 548e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kRight_Align: 549e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 550e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length; 551e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 552e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy default: 553e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 554e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 555e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 556694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy int alpha; 557694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy SkXfermode::Mode mode; 558694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy getAlphaAndMode(paint, &alpha, &mode); 559694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 560694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy uint32_t color = paint->getColor(); 561694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy const GLfloat a = alpha / 255.0f; 562694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 563694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 564694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 565694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 566694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy mModelView.loadIdentity(); 567694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 568889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 569889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasTexture = true; 570889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasAlpha8Texture = true; 571889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 572889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy useProgram(mProgramCache.get(description)); 573889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mCurrentProgram->set(mOrthoMatrix, mModelView, mSnapshot->transform); 574694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 575694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy chooseBlending(true, mode); 576889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy bindTexture(mFontRenderer.getTexture(), GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, 0); 577889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 578889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy int texCoordsSlot = mCurrentProgram->getAttrib("texCoords"); 579889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glEnableVertexAttribArray(texCoordsSlot); 580694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 581694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy // Always premultiplied 582889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniform4f(mCurrentProgram->color, r, g, b, a); 583694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 58409147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy // TODO: Implement scale properly 58509147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy const Rect& clip = mSnapshot->getLocalClip(); 58665ef909776c03417d8b597738da54ca211e37e4fAlex Sakhartchouk mFontRenderer.setFont(paint, SkTypeface::UniqueID(paint->getTypeface()), paint->getTextSize()); 587e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy mFontRenderer.renderText(paint, &clip, text, 0, bytesCount, count, x, y); 588694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 589694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); 590889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDisableVertexAttribArray(texCoordsSlot); 591694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy} 592694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 5936926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 594d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy// Shaders 595d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 596d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 597d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guyvoid OpenGLRenderer::resetShader() { 598d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy mShader = OpenGLRenderer::kShaderNone; 599f9764a4f532561f6e2e985ff3b25112f1132ce44Romain Guy mShaderKey = NULL; 600d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy mShaderBlend = false; 601a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy mShaderTileX = GL_CLAMP_TO_EDGE; 602a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy mShaderTileY = GL_CLAMP_TO_EDGE; 603d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy} 604d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 605d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guyvoid OpenGLRenderer::setupBitmapShader(SkBitmap* bitmap, SkShader::TileMode tileX, 606d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy SkShader::TileMode tileY, SkMatrix* matrix, bool hasAlpha) { 6077fac2e18339f765320d759e8d4c090f92431959eRomain Guy mShader = OpenGLRenderer::kShaderBitmap; 608d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy mShaderBlend = hasAlpha; 609d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy mShaderBitmap = bitmap; 610a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy mShaderTileX = gTileModes[tileX]; 611a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy mShaderTileY = gTileModes[tileY]; 612d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy mShaderMatrix = matrix; 613d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy} 614d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 615c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyvoid OpenGLRenderer::setupLinearGradientShader(SkShader* shader, float* bounds, uint32_t* colors, 616889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy float* positions, int count, SkShader::TileMode tileMode, SkMatrix* matrix, bool hasAlpha) { 617f9764a4f532561f6e2e985ff3b25112f1132ce44Romain Guy // TODO: We should use a struct to describe each shader 6187fac2e18339f765320d759e8d4c090f92431959eRomain Guy mShader = OpenGLRenderer::kShaderLinearGradient; 619f9764a4f532561f6e2e985ff3b25112f1132ce44Romain Guy mShaderKey = shader; 6207fac2e18339f765320d759e8d4c090f92431959eRomain Guy mShaderBlend = hasAlpha; 621a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy mShaderTileX = gTileModes[tileMode]; 622a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy mShaderTileY = gTileModes[tileMode]; 6237fac2e18339f765320d759e8d4c090f92431959eRomain Guy mShaderMatrix = matrix; 6247fac2e18339f765320d759e8d4c090f92431959eRomain Guy mShaderBounds = bounds; 6257fac2e18339f765320d759e8d4c090f92431959eRomain Guy mShaderColors = colors; 6267fac2e18339f765320d759e8d4c090f92431959eRomain Guy mShaderPositions = positions; 627c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mShaderCount = count; 6287fac2e18339f765320d759e8d4c090f92431959eRomain Guy} 6297fac2e18339f765320d759e8d4c090f92431959eRomain Guy 630d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 6316926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy// Drawing implementation 6326926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 6336926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 634026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, 6353d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy int color, SkXfermode::Mode mode, bool ignoreTransform) { 636d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // If a shader is set, preserve only the alpha 637d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (mShader != kShaderNone) { 638d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy color |= 0x00ffffff; 639d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 640d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 641d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // Render using pre-multiplied alpha 642026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const int alpha = (color >> 24) & 0xFF; 643d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy const GLfloat a = alpha / 255.0f; 644d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 645d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy switch (mShader) { 6467fac2e18339f765320d759e8d4c090f92431959eRomain Guy case OpenGLRenderer::kShaderBitmap: 647d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy drawBitmapShader(left, top, right, bottom, a, mode); 648d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy return; 6497fac2e18339f765320d759e8d4c090f92431959eRomain Guy case OpenGLRenderer::kShaderLinearGradient: 650c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy drawLinearGradientShader(left, top, right, bottom, a, mode); 651c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy return; 652d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy default: 653d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy break; 654d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 655026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 656c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 657c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 658c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 659c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 6606926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy // Pre-multiplication happens when setting the shader color 661d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy chooseBlending(alpha < 255 || mShaderBlend, mode); 6629d5316e3f56d138504565ff311145ac01621dff4Romain Guy 663c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy mModelView.loadTranslate(left, top, 0.0f); 664c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 6659d5316e3f56d138504565ff311145ac01621dff4Romain Guy 666889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 667889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy Program* program = mProgramCache.get(description); 668889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy if (!useProgram(program)) { 669ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy const GLvoid* vertices = &mMeshVertices[0].position[0]; 670ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy const GLvoid* texCoords = &mMeshVertices[0].texture[0]; 671ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy 672889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(mCurrentProgram->position, 2, GL_FLOAT, GL_FALSE, 673ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, vertices); 674d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 675d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 6763d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy if (!ignoreTransform) { 677889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mCurrentProgram->set(mOrthoMatrix, mModelView, mSnapshot->transform); 6783d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy } else { 6793d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy mat4 identity; 680889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mCurrentProgram->set(mOrthoMatrix, mModelView, identity); 6813d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy } 6829d5316e3f56d138504565ff311145ac01621dff4Romain Guy 683889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniform4f(mCurrentProgram->color, r, g, b, a); 6849d5316e3f56d138504565ff311145ac01621dff4Romain Guy 685ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 68682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy} 687026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 688c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyvoid OpenGLRenderer::drawLinearGradientShader(float left, float top, float right, float bottom, 689c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy float alpha, SkXfermode::Mode mode) { 690889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glActiveTexture(GL_TEXTURE1); 691c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy Texture* texture = mGradientCache.get(mShaderKey); 692c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy if (!texture) { 693a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy SkShader::TileMode tileMode = SkShader::kClamp_TileMode; 694a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy switch (mShaderTileX) { 695a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy case GL_REPEAT: 696a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy tileMode = SkShader::kRepeat_TileMode; 697a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy break; 698a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy case GL_MIRRORED_REPEAT: 699a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy tileMode = SkShader::kMirror_TileMode; 700a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy break; 701a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy } 702a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy 703c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy texture = mGradientCache.addLinearGradient(mShaderKey, mShaderBounds, mShaderColors, 704a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy mShaderPositions, mShaderCount, tileMode); 705c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 706c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 707889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 708889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasGradient = true; 709889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 710c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mModelView.loadTranslate(left, top, 0.0f); 711c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 712c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 713889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy useProgram(mProgramCache.get(description)); 714889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mCurrentProgram->set(mOrthoMatrix, mModelView, mSnapshot->transform); 715c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 716c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy chooseBlending(mShaderBlend || alpha < 1.0f, mode); 717889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy bindTexture(texture->id, mShaderTileX, mShaderTileY, 1); 718889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniform1i(mCurrentProgram->getUniform("gradientSampler"), 1); 719c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 720c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy Rect start(mShaderBounds[0], mShaderBounds[1], mShaderBounds[2], mShaderBounds[3]); 721c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy if (mShaderMatrix) { 722c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mat4 shaderMatrix(*mShaderMatrix); 723c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy shaderMatrix.mapRect(start); 724c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 725c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mSnapshot->transform.mapRect(start); 726c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 727c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const float gradientX = start.right - start.left; 728c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const float gradientY = start.bottom - start.top; 729c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 730c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mat4 screenSpace(mSnapshot->transform); 731c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy screenSpace.multiply(mModelView); 732c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 733c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy // Always premultiplied 734889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniform4f(mCurrentProgram->color, alpha, alpha, alpha, alpha); 735889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniform2f(mCurrentProgram->getUniform("gradientStart"), start.left, start.top); 736889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniform2f(mCurrentProgram->getUniform("gradient"), gradientX, gradientY); 737889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniform1f(mCurrentProgram->getUniform("gradientLength"), 738c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 1.0f / (gradientX * gradientX + gradientY * gradientY)); 739889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniformMatrix4fv(mCurrentProgram->getUniform("screenSpace"), 1, GL_FALSE, 740c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy &screenSpace.data[0]); 741c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 742889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(mCurrentProgram->position, 2, GL_FLOAT, GL_FALSE, 743ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, &mMeshVertices[0].position[0]); 744c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 745ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 746c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 747c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 748d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guyvoid OpenGLRenderer::drawBitmapShader(float left, float top, float right, float bottom, 749d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy float alpha, SkXfermode::Mode mode) { 750889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glActiveTexture(GL_TEXTURE2); 751d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy const Texture* texture = mTextureCache.get(mShaderBitmap); 752d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 753d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy const float width = texture->width; 754d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy const float height = texture->height; 755d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 756889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.loadTranslate(left, top, 0.0f); 757889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 758d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 759889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mat4 textureTransform; 760d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (mShaderMatrix) { 761d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy SkMatrix inverse; 762d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy mShaderMatrix->invert(&inverse); 763889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy textureTransform.load(inverse); 764889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy textureTransform.multiply(mModelView); 765889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } else { 766889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy textureTransform.load(mModelView); 767889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 768d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 769889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 770889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasBitmap = true; 771889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // The driver does not support non-power of two mirrored/repeated 772889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // textures, so do it ourselves 773889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy if (!mExtensions.hasNPot()) { 774889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.isBitmapNpot = true; 775889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.bitmapWrapS = mShaderTileX; 776889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.bitmapWrapT = mShaderTileY; 777d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 778d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 779889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy useProgram(mProgramCache.get(description)); 780889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mCurrentProgram->set(mOrthoMatrix, mModelView, mSnapshot->transform); 781d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 782889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy chooseBlending(texture->blend || alpha < 1.0f, mode); 783d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 784889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Texture 785889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy bindTexture(texture->id, mShaderTileX, mShaderTileY, 2); 786889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniform1i(mCurrentProgram->getUniform("bitmapSampler"), 2); 787889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniformMatrix4fv(mCurrentProgram->getUniform("textureTransform"), 1, 788889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GL_FALSE, &textureTransform.data[0]); 789889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniform2f(mCurrentProgram->getUniform("textureDimension"), 1.0f / width, 1.0f / height); 790d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 791889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Always premultiplied 792889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniform4f(mCurrentProgram->color, alpha, alpha, alpha, alpha); 793889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 794889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Mesh 795889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(mCurrentProgram->position, 2, GL_FLOAT, GL_FALSE, 796889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy gMeshStride, &mMeshVertices[0].position[0]); 797889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 798889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 799d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy} 800d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 80182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 802a979474f15b454c8e2963f239a3770e200bb227cRomain Guy const Texture* texture, const SkPaint* paint) { 80382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy int alpha; 80482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy SkXfermode::Mode mode; 80582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy getAlphaAndMode(paint, &alpha, &mode); 80682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 807a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, right, bottom, texture->id, alpha / 255.0f, mode, texture->blend, 808ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], NULL); 80985bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy} 81085bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 811bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 812a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend) { 813a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, right, bottom, texture, alpha, mode, blend, 814ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], NULL); 815f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 816f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 817f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guyvoid OpenGLRenderer::drawTextureMesh(float left, float top, float right, float bottom, 818a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend, 819f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy GLvoid* vertices, GLvoid* texCoords, GLvoid* indices, GLsizei elementsCount) { 820889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 821889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasTexture = true; 822889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 823bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.loadTranslate(left, top, 0.0f); 824bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.scale(right - left, bottom - top, 1.0f); 825bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 826889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy useProgram(mProgramCache.get(description)); 827889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mCurrentProgram->set(mOrthoMatrix, mModelView, mSnapshot->transform); 828bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 829a979474f15b454c8e2963f239a3770e200bb227cRomain Guy chooseBlending(blend || alpha < 1.0f, mode); 830889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 831889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Texture 832889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy bindTexture(texture, mShaderTileX, mShaderTileY, 0); 833889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniform1i(mCurrentProgram->getUniform("sampler"), 0); 834c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 835a979474f15b454c8e2963f239a3770e200bb227cRomain Guy // Always premultiplied 836889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glUniform4f(mCurrentProgram->color, alpha, alpha, alpha, alpha); 837bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 838889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Mesh 839889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy int texCoordsSlot = mCurrentProgram->getAttrib("texCoords"); 840889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glEnableVertexAttribArray(texCoordsSlot); 841889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(mCurrentProgram->position, 2, GL_FLOAT, GL_FALSE, 842ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, vertices); 843889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, gMeshStride, texCoords); 844bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 845f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy if (!indices) { 846ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 847f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy } else { 848f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy glDrawElements(GL_TRIANGLES, elementsCount, GL_UNSIGNED_SHORT, indices); 849f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy } 850889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDisableVertexAttribArray(texCoordsSlot); 85182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy} 85282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 85382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guyvoid OpenGLRenderer::chooseBlending(bool blend, SkXfermode::Mode mode, bool isPremultiplied) { 85482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy // In theory we should not blend if the mode is Src, but it's rare enough 85582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy // that it's not worth it 85682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy blend = blend || mode != SkXfermode::kSrcOver_Mode; 85782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy if (blend) { 85882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy if (!mBlend) { 85982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy glEnable(GL_BLEND); 86082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 86182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 86282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy GLenum sourceMode = gBlends[mode].src; 86382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy GLenum destMode = gBlends[mode].dst; 86482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy if (!isPremultiplied && sourceMode == GL_ONE) { 86582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy sourceMode = GL_SRC_ALPHA; 86682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 86782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 86882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy if (sourceMode != mLastSrcMode || destMode != mLastDstMode) { 86982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy glBlendFunc(sourceMode, destMode); 87082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy mLastSrcMode = sourceMode; 87182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy mLastDstMode = destMode; 87282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 87382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } else if (mBlend) { 87482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy glDisable(GL_BLEND); 87582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 87682ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy mBlend = blend; 877bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 878bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 879889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guybool OpenGLRenderer::useProgram(Program* program) { 880d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (!program->isInUse()) { 881889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy if (mCurrentProgram != NULL) mCurrentProgram->remove(); 882d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy program->use(); 883d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy mCurrentProgram = program; 8846926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return false; 885260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy } 8866926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return true; 887260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy} 888260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy 889026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) { 890ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy TextureVertex* v = &mMeshVertices[0]; 89182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v1); 89282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v1); 89382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v2); 89482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v2); 8958ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 8968ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 8978ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) { 8988ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (paint) { 8998ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const bool isMode = SkXfermode::IsMode(paint->getXfermode(), mode); 9008ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (!isMode) { 9018ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Assume SRC_OVER 9028ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *mode = SkXfermode::kSrcOver_Mode; 9038ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 9048ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 9058ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Skia draws using the color's alpha channel if < 255 9068ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Otherwise, it uses the paint's alpha 9078ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy int color = paint->getColor(); 9088ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = (color >> 24) & 0xFF; 9098ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (*alpha == 255) { 9108ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = paint->getAlpha(); 9118ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 9128ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } else { 9138ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *mode = SkXfermode::kSrcOver_Mode; 9148ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = 255; 9158ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 916026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy} 917026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 918889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guyvoid OpenGLRenderer::bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT, GLuint textureUnit) { 919889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glActiveTexture(gTextureUnits[textureUnit]); 920889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy if (texture != mLastTexture[textureUnit]) { 921a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 922889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mLastTexture[textureUnit] = texture; 923a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy } 924a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrapS); 925a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrapT); 926a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy} 927a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy 9289d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 929e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy}; // namespace android 930