OpenGLRenderer.cpp revision f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640
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> 245cbbce535744b89df5ecea95de21ee3733298260Romain Guy 255cbbce535744b89df5ecea95de21ee3733298260Romain Guy#include <utils/Log.h> 2685bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 2785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy#include "OpenGLRenderer.h" 28e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 29e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guynamespace android { 309d5316e3f56d138504565ff311145ac01621dff4Romain Guynamespace uirenderer { 319d5316e3f56d138504565ff311145ac01621dff4Romain Guy 329d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 339d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Defines 349d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 359d5316e3f56d138504565ff311145ac01621dff4Romain Guy 36ce0537b80087a6225273040a987414b1dd081aa0Romain Guy#define MAX_TEXTURE_COUNT 128 37ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 38bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#define SV(x, y) { { x, y } } 39bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#define FV(x, y, u, v) { { x, y }, { u, v } } 409d5316e3f56d138504565ff311145ac01621dff4Romain Guy 419d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 429d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Globals 439d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 449d5316e3f56d138504565ff311145ac01621dff4Romain Guy 45026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const SimpleVertex gDrawColorVertices[] = { 46bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy SV(0.0f, 0.0f), 47bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy SV(1.0f, 0.0f), 48bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy SV(0.0f, 1.0f), 49bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy SV(1.0f, 1.0f) 509d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; 51026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const GLsizei gDrawColorVertexStride = sizeof(SimpleVertex); 52026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const GLsizei gDrawColorVertexCount = 4; 539d5316e3f56d138504565ff311145ac01621dff4Romain Guy 54026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// This array is never used directly but used as a memcpy source in the 55026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// OpenGLRenderer constructor 56026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const TextureVertex gDrawTextureVertices[] = { 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}; 62026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const GLsizei gDrawTextureVertexStride = sizeof(TextureVertex); 63026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const GLsizei gDrawTextureVertexCount = 4; 64026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 65026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// In this array, the index of each Blender equals the value of the first 66026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// entry. For instance, gBlends[1] == gBlends[SkXfermode::kSrc_Mode] 67026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const Blender gBlends[] = { 68026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 69026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrc_Mode, GL_ONE, GL_ZERO }, 70026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDst_Mode, GL_ZERO, GL_ONE }, 71026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 72026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 73026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcIn_Mode, GL_DST_ALPHA, GL_ZERO }, 74026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 75026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 76026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 77026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 78026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 79026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 80026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy}; 81e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 82f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 83f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Constructors/destructor 84f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 85f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 86ce0537b80087a6225273040a987414b1dd081aa0Romain GuyOpenGLRenderer::OpenGLRenderer(): mTextureCache(MAX_TEXTURE_COUNT) { 8785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Create OpenGLRenderer"); 889d5316e3f56d138504565ff311145ac01621dff4Romain Guy 899d5316e3f56d138504565ff311145ac01621dff4Romain Guy mDrawColorShader = new DrawColorProgram; 90bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mDrawTextureShader = new DrawTextureProgram; 91026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 92026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy memcpy(mDrawTextureVertices, gDrawTextureVertices, sizeof(gDrawTextureVertices)); 93e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 94e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 9585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain GuyOpenGLRenderer::~OpenGLRenderer() { 9685bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Destroy OpenGLRenderer"); 97ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 98ce0537b80087a6225273040a987414b1dd081aa0Romain Guy mTextureCache.clear(); 99e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 100e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 101f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 102f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Setup 103f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 104f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 10585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::setViewport(int width, int height) { 10608ae317c21ec3086b5017672bba87420cc38a407Romain Guy glViewport(0, 0, width, height); 10708ae317c21ec3086b5017672bba87420cc38a407Romain Guy 10808ae317c21ec3086b5017672bba87420cc38a407Romain Guy mat4 ortho; 109c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy ortho.loadOrtho(0, width, height, 0, -1, 1); 11008ae317c21ec3086b5017672bba87420cc38a407Romain Guy ortho.copyTo(mOrthoMatrix); 111bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 112bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mWidth = width; 113bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mHeight = height; 114f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy mFirstSnapshot.height = height; 115e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 116e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 11785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::prepare() { 1187ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot = &mFirstSnapshot; 1197ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSaveCount = 0; 120f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 12108ae317c21ec3086b5017672bba87420cc38a407Romain Guy glDisable(GL_SCISSOR_TEST); 122bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 12308ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 12408ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClear(GL_COLOR_BUFFER_BIT); 125bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 12608ae317c21ec3086b5017672bba87420cc38a407Romain Guy glEnable(GL_SCISSOR_TEST); 127c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glScissor(0, 0, mWidth, mHeight); 128f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 129bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mSnapshot->clipRect.set(0.0f, 0.0f, mWidth, mHeight); 130bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 131bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 132f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 133f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// State management 134f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 135f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 136bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::getSaveCount() const { 1377ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSaveCount; 138bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 139bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 140bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::save(int flags) { 1417ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return saveSnapshot(); 142bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 143bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 144bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restore() { 1457ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (mSaveCount == 0) return; 146bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1477ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (restoreSnapshot()) { 1487ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 1497ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 150bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 151bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 152bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restoreToCount(int saveCount) { 1537ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (saveCount <= 0 || saveCount > mSaveCount) return; 154bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1557ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = false; 156bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1577ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy while (mSaveCount != saveCount - 1) { 1587ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy restoreClip |= restoreSnapshot(); 1597ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 160bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1617ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (restoreClip) { 1627ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 1637ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 164bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 165bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 166bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::saveSnapshot() { 1677ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot = new Snapshot(mSnapshot); 1687ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return ++mSaveCount; 169bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 170bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 171bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::restoreSnapshot() { 1727ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = mSnapshot->flags & Snapshot::kFlagClipSet; 173bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy bool restoreLayer = mSnapshot->flags & Snapshot::kFlagIsLayer; 174f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy bool restoreOrtho = mSnapshot->flags & Snapshot::kFlagDirtyOrtho; 175bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 176bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy sp<Snapshot> current = mSnapshot; 1777ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy sp<Snapshot> previous = mSnapshot->previous; 178bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 179f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy if (restoreOrtho) { 180f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy memcpy(mOrthoMatrix, current->orthoMatrix, sizeof(mOrthoMatrix)); 181f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy } 182f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 183bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (restoreLayer) { 184d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy composeLayer(current, previous); 185d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 186bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 187d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mSnapshot = previous; 188d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mSaveCount--; 1895cbbce535744b89df5ecea95de21ee3733298260Romain Guy 190d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return restoreClip; 191d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 1925cbbce535744b89df5ecea95de21ee3733298260Romain Guy 193d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guyvoid OpenGLRenderer::composeLayer(sp<Snapshot> current, sp<Snapshot> previous) { 194d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Unbind current FBO and restore previous one 195d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Most of the time, previous->fbo will be 0 to bind the default buffer 196d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glBindFramebuffer(GL_FRAMEBUFFER, previous->fbo); 1975cbbce535744b89df5ecea95de21ee3733298260Romain Guy 198d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Restore the clip from the previous snapshot 199d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy const Rect& clip = previous->getMappedClip(); 200d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 201bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 202d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Compute the correct texture coordinates for the FBO texture 203d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // The texture is currently as big as the window but drawn with 204d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // a quad of the appropriate size 205d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy const Rect& layer = current->layer; 206bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 207d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy drawTextureRect(layer.left, layer.top, layer.right, layer.bottom, 208c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy current->texture, current->alpha, current->mode, true, true); 209bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 210f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy // TODO Don't delete these things, but cache them 211d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glDeleteFramebuffers(1, ¤t->fbo); 212d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glDeleteTextures(1, ¤t->texture); 213bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 214bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 215f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 216bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy// Layers 217bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 218bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 219bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayer(float left, float top, float right, float bottom, 220bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const SkPaint* p, int flags) { 221d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int count = saveSnapshot(); 222d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 223d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int alpha = 255; 224d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy SkXfermode::Mode mode; 225d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 226d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (p) { 227d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy alpha = p->getAlpha(); 228d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 229d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (!isMode) { 230d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Assume SRC_OVER 231d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 232d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 233d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } else { 234d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 235d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 236d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 237d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, mode, flags); 238d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 239d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 240bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 241bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 242bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayerAlpha(float left, float top, float right, float bottom, 243bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int alpha, int flags) { 244bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int count = saveSnapshot(); 245d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, SkXfermode::kSrcOver_Mode, flags); 246d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 247d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 248bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 249d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guybool OpenGLRenderer::createLayer(sp<Snapshot> snapshot, float left, float top, 250d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy float right, float bottom, int alpha, SkXfermode::Mode mode,int flags) { 251bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Generate the FBO and attach the texture 252d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glGenFramebuffers(1, &snapshot->fbo); 253d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glBindFramebuffer(GL_FRAMEBUFFER, snapshot->fbo); 254bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 255bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Generate the texture in which the FBO will draw 256d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glGenTextures(1, &snapshot->texture); 257d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glBindTexture(GL_TEXTURE_2D, snapshot->texture); 258bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 259bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // The FBO will not be scaled, so we can use lower quality filtering 260bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 261bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 2628ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 2635cbbce535744b89df5ecea95de21ee3733298260Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2645cbbce535744b89df5ecea95de21ee3733298260Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 265bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2668ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // TODO VERY IMPORTANT: Fix TextView to not call saveLayer() all the time 267f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy // TODO Use an FBO cache 268bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 269f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const GLsizei width = right - left; 270f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const GLsizei height = bottom - top; 271bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 272bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const GLint format = (flags & SkCanvas::kHasAlphaLayer_SaveFlag) ? GL_RGBA : GL_RGB; 273bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, GL_UNSIGNED_BYTE, NULL); 274bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glBindTexture(GL_TEXTURE_2D, 0); 275bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 276bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Bind texture to FBO 277bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 278d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy snapshot->texture, 0); 279bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 280bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); 281bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (status != GL_FRAMEBUFFER_COMPLETE) { 282f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy LOGD("Framebuffer incomplete (GL error code 0x%x)", status); 283bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 284d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glDeleteFramebuffers(1, &snapshot->fbo); 285d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glDeleteTextures(1, &snapshot->texture); 286d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 287d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return false; 288bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 289bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 290f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy // Clear the FBO 291f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy glDisable(GL_SCISSOR_TEST); 292f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 293f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy glClear(GL_COLOR_BUFFER_BIT); 294f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy glEnable(GL_SCISSOR_TEST); 295f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 296d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy snapshot->flags |= Snapshot::kFlagIsLayer; 297d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy snapshot->mode = mode; 298d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy snapshot->alpha = alpha / 255.0f; 299d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy snapshot->layer.set(left, top, right, bottom); 300d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 301f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy // Creates a new snapshot to draw into the FBO 302f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy saveSnapshot(); 303f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy // TODO: This doesn't preserve other transformations (check Skia first) 304f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy mSnapshot->transform.loadTranslate(-left, -top, 0.0f); 305f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy mSnapshot->clipRect.set(left, top, right, bottom); 306f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy mSnapshot->height = bottom - top; 307f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy setScissorFromClip(); 308f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 309f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy mSnapshot->flags = Snapshot::kFlagDirtyTransform | Snapshot::kFlagDirtyOrtho | 310f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy Snapshot::kFlagClipSet; 311f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy memcpy(mSnapshot->orthoMatrix, mOrthoMatrix, sizeof(mOrthoMatrix)); 312f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 313f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy // Change the ortho projection 314f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy mat4 ortho; 315f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy ortho.loadOrtho(0.0f, right - left, bottom - top, 0.0f, 0.0f, 1.0f); 316f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy ortho.copyTo(mOrthoMatrix); 317f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 318d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return true; 319bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 320bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 321bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 322f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Transforms 323f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 324f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 325f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::translate(float dx, float dy) { 3267ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.translate(dx, dy, 0.0f); 3277ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 328f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 329f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 330f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::rotate(float degrees) { 3317ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.rotate(degrees, 0.0f, 0.0f, 1.0f); 3327ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 333f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 334f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 335f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::scale(float sx, float sy) { 3367ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.scale(sx, sy, 1.0f); 3377ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 338f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 339f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 340f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::setMatrix(SkMatrix* matrix) { 3417ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.load(*matrix); 3427ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 343f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 344f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 345f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::getMatrix(SkMatrix* matrix) { 3467ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.copyTo(*matrix); 347f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 348f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 349f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::concatMatrix(SkMatrix* matrix) { 3507ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mat4 m(*matrix); 3517ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.multiply(m); 3527ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 353f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 354f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 355f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 356f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Clipping 357f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 358f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 359bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::setScissorFromClip() { 3607ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy const Rect& clip = mSnapshot->getMappedClip(); 361f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy glScissor(clip.left, mSnapshot->height - clip.bottom, clip.getWidth(), clip.getHeight()); 3629d5316e3f56d138504565ff311145ac01621dff4Romain Guy} 3639d5316e3f56d138504565ff311145ac01621dff4Romain Guy 3649d5316e3f56d138504565ff311145ac01621dff4Romain Guyconst Rect& OpenGLRenderer::getClipBounds() { 3657ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSnapshot->clipRect; 366bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 367bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 368c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guybool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) { 369c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy /* 370c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * The documentation of quickReject() indicates that the specified rect 371c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * is transformed before being compared to the clip rect. However, the 372c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * clip rect is not stored transformed in the snapshot and can thus be 373c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * compared directly 374c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * 375c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * The following code can be used instead to performed a mapped comparison: 376c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * 377c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * mSnapshot->transform.mapRect(r); 378c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * const Rect& clip = mSnapshot->getMappedClip(); 379c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * return !clip.intersects(r); 380c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy */ 381c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy Rect r(left, top, right, bottom); 382c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy return !mSnapshot->clipRect.intersects(r); 383c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 384c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy 385bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::clipRect(float left, float top, float right, float bottom) { 3867ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool clipped = mSnapshot->clipRect.intersect(left, top, right, bottom); 3877ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (clipped) { 3887ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagClipSet; 3897ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 3907ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 3917ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return clipped; 392e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 393e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 394f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 395f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Drawing 396f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 397f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 398c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, float left, float top, const SkPaint* paint) { 399f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const Texture* texture = mTextureCache.get(bitmap); 400c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 4018ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy int alpha; 402c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy SkXfermode::Mode mode; 4038ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy getAlphaAndMode(paint, &alpha, &mode); 4048ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 4058ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy drawTextureRect(left, top, left + texture->width, top + texture->height, texture->id, 4068ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy alpha / 255.0f, mode, texture->blend, true); 4078ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 4088ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 409f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, const SkMatrix* matrix, const SkPaint* paint) { 410f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy Rect r(0.0f, 0.0f, bitmap->width(), bitmap->height()); 411f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const mat4 transform(*matrix); 412f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy transform.mapRect(r); 413f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 414f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const Texture* texture = mTextureCache.get(bitmap); 415f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 416f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy int alpha; 417f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy SkXfermode::Mode mode; 418f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy getAlphaAndMode(paint, &alpha, &mode); 419f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 420f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy drawTextureRect(r.left, r.top, r.right, r.bottom, texture->id, 421f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy alpha / 255.0f, mode, texture->blend, true); 422f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy} 423f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 4248ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, 4258ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float srcLeft, float srcTop, float srcRight, float srcBottom, 4268ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float dstLeft, float dstTop, float dstRight, float dstBottom, 427f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const SkPaint* paint) { 428f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const Texture* texture = mTextureCache.get(bitmap); 4298ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 430c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy int alpha; 4318ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy SkXfermode::Mode mode; 4328ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy getAlphaAndMode(paint, &alpha, &mode); 433c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 4348ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float width = texture->width; 4358ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float height = texture->height; 436c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 4378ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u1 = srcLeft / width; 4388ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v1 = srcTop / height; 4398ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u2 = srcRight / width; 4408ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v2 = srcBottom / height; 441c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 4428ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(u1, v1, u2, v2); 4438ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 4448ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy drawTextureRect(dstLeft, dstTop, dstRight, dstBottom, texture->id, 445c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy alpha / 255.0f, mode, texture->blend, true); 4468ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 4478ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 448ce0537b80087a6225273040a987414b1dd081aa0Romain Guy} 449ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 45085bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) { 451c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy const Rect& clip = mSnapshot->clipRect; 452026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode); 453c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 4549d5316e3f56d138504565ff311145ac01621dff4Romain Guy 455bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawRect(float left, float top, float right, float bottom, const SkPaint* p) { 456026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy SkXfermode::Mode mode; 457026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 458026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 459026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (!isMode) { 460026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Assume SRC_OVER 461026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mode = SkXfermode::kSrcOver_Mode; 462026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 463026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 464026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Skia draws using the color's alpha channel if < 255 465026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Otherwise, it uses the paint's alpha 466026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color = p->getColor(); 467026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (((color >> 24) & 0xFF) == 255) { 468026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy color |= p->getAlpha() << 24; 469026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 470026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 471026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(left, top, right, bottom, color, mode); 472c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 4739d5316e3f56d138504565ff311145ac01621dff4Romain Guy 474026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, 475026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color, SkXfermode::Mode mode) { 476026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const int alpha = (color >> 24) & 0xFF; 477026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const bool blend = alpha < 255 || mode != SkXfermode::kSrcOver_Mode; 478026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 479026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLfloat a = alpha / 255.0f; 480026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLfloat r = ((color >> 16) & 0xFF) / 255.0f; 481026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLfloat g = ((color >> 8) & 0xFF) / 255.0f; 482026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLfloat b = ((color ) & 0xFF) / 255.0f; 483026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 484026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (blend) { 485026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy glEnable(GL_BLEND); 486026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy glBlendFunc(gBlends[mode].src, gBlends[mode].dst); 487026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 4889d5316e3f56d138504565ff311145ac01621dff4Romain Guy 489c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy mModelView.loadTranslate(left, top, 0.0f); 490c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 4919d5316e3f56d138504565ff311145ac01621dff4Romain Guy 492c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy mDrawColorShader->use(&mOrthoMatrix[0], &mModelView.data[0], &mSnapshot->transform.data[0]); 4939d5316e3f56d138504565ff311145ac01621dff4Romain Guy 494c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy const GLvoid* p = &gDrawColorVertices[0].position[0]; 4959d5316e3f56d138504565ff311145ac01621dff4Romain Guy 496c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glEnableVertexAttribArray(mDrawColorShader->position); 497c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glVertexAttribPointer(mDrawColorShader->position, 2, GL_FLOAT, GL_FALSE, 498c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy gDrawColorVertexStride, p); 499c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glVertexAttrib4f(mDrawColorShader->color, r, g, b, a); 5009d5316e3f56d138504565ff311145ac01621dff4Romain Guy 501c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gDrawColorVertexCount); 5029d5316e3f56d138504565ff311145ac01621dff4Romain Guy 503c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glDisableVertexAttribArray(mDrawColorShader->position); 504026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 505026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (blend) { 506026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy glDisable(GL_BLEND); 507026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 50885bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy} 50985bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 510bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 511c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend, bool isPremultiplied) { 512bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.loadTranslate(left, top, 0.0f); 513bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.scale(right - left, bottom - top, 1.0f); 514bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 515bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mDrawTextureShader->use(&mOrthoMatrix[0], &mModelView.data[0], &mSnapshot->transform.data[0]); 516bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 517c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy if (blend || alpha < 1.0f || mode != SkXfermode::kSrcOver_Mode) { 518c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy GLenum sourceMode = gBlends[mode].src; 519c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy if (!isPremultiplied && sourceMode == GL_ONE) { 520c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy sourceMode = GL_SRC_ALPHA; 521c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy } 522d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 523c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy glEnable(GL_BLEND); 524c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy glBlendFunc(sourceMode, gBlends[mode].dst); 525c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy } 526bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 527bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 528bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 529c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy // TODO handle tiling and filtering here 530c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 531bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glActiveTexture(GL_TEXTURE0); 532bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glUniform1i(mDrawTextureShader->sampler, 0); 533bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 534026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLvoid* p = &mDrawTextureVertices[0].position[0]; 535026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLvoid* t = &mDrawTextureVertices[0].texture[0]; 536bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 537bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glEnableVertexAttribArray(mDrawTextureShader->position); 538bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glVertexAttribPointer(mDrawTextureShader->position, 2, GL_FLOAT, GL_FALSE, 539bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy gDrawTextureVertexStride, p); 540bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 541bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glEnableVertexAttribArray(mDrawTextureShader->texCoords); 542bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glVertexAttribPointer(mDrawTextureShader->texCoords, 2, GL_FLOAT, GL_FALSE, 543bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy gDrawTextureVertexStride, t); 544bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 545bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glVertexAttrib4f(mDrawTextureShader->color, 1.0f, 1.0f, 1.0f, alpha); 546bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 547bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gDrawTextureVertexCount); 548bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 549bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDisableVertexAttribArray(mDrawTextureShader->position); 550bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDisableVertexAttribArray(mDrawTextureShader->texCoords); 551bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 552bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glBindTexture(GL_TEXTURE_2D, 0); 553bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDisable(GL_BLEND); 554bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 555bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 556026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) { 557026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[0].texture[0] = u1; 5588ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy mDrawTextureVertices[0].texture[1] = v1; 559026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[1].texture[0] = u2; 5608ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy mDrawTextureVertices[1].texture[1] = v1; 561026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[2].texture[0] = u1; 5628ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy mDrawTextureVertices[2].texture[1] = v2; 563026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[3].texture[0] = u2; 5648ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy mDrawTextureVertices[3].texture[1] = v2; 5658ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 5668ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 5678ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) { 5688ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (paint) { 5698ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const bool isMode = SkXfermode::IsMode(paint->getXfermode(), mode); 5708ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (!isMode) { 5718ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Assume SRC_OVER 5728ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *mode = SkXfermode::kSrcOver_Mode; 5738ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 5748ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 5758ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Skia draws using the color's alpha channel if < 255 5768ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Otherwise, it uses the paint's alpha 5778ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy int color = paint->getColor(); 5788ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = (color >> 24) & 0xFF; 5798ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (*alpha == 255) { 5808ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = paint->getAlpha(); 5818ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 5828ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } else { 5838ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *mode = SkXfermode::kSrcOver_Mode; 5848ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = 255; 5858ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 586026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy} 587026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 5889d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 589e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy}; // namespace android 590