OpenGLRenderer.cpp revision c1396e93b6a5286a5183c00c781b62e940a12c1f
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; 114e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 115e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 11685bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::prepare() { 1177ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot = &mFirstSnapshot; 1187ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSaveCount = 0; 119f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 12008ae317c21ec3086b5017672bba87420cc38a407Romain Guy glDisable(GL_SCISSOR_TEST); 121bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 12208ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 12308ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClear(GL_COLOR_BUFFER_BIT); 124bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 12508ae317c21ec3086b5017672bba87420cc38a407Romain Guy glEnable(GL_SCISSOR_TEST); 126c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glScissor(0, 0, mWidth, mHeight); 127f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 128bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mSnapshot->clipRect.set(0.0f, 0.0f, mWidth, mHeight); 129bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 130bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 131f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 132f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// State management 133f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 134f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 135bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::getSaveCount() const { 1367ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSaveCount; 137bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 138bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 139bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::save(int flags) { 1407ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return saveSnapshot(); 141bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 142bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 143bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restore() { 1447ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (mSaveCount == 0) return; 145bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1467ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (restoreSnapshot()) { 1477ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 1487ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 149bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 150bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 151bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restoreToCount(int saveCount) { 1527ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (saveCount <= 0 || saveCount > mSaveCount) return; 153bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1547ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = false; 155bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1567ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy while (mSaveCount != saveCount - 1) { 1577ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy restoreClip |= restoreSnapshot(); 1587ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 159bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1607ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (restoreClip) { 1617ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 1627ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 163bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 164bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 165bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::saveSnapshot() { 1667ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot = new Snapshot(mSnapshot); 1677ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return ++mSaveCount; 168bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 169bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 170bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::restoreSnapshot() { 1717ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = mSnapshot->flags & Snapshot::kFlagClipSet; 172bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy bool restoreLayer = mSnapshot->flags & Snapshot::kFlagIsLayer; 173bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 174bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy sp<Snapshot> current = mSnapshot; 1757ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy sp<Snapshot> previous = mSnapshot->previous; 176bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 177bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (restoreLayer) { 178d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy composeLayer(current, previous); 179d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 180bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 181d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mSnapshot = previous; 182d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mSaveCount--; 1835cbbce535744b89df5ecea95de21ee3733298260Romain Guy 184d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return restoreClip; 185d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 1865cbbce535744b89df5ecea95de21ee3733298260Romain Guy 187d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guyvoid OpenGLRenderer::composeLayer(sp<Snapshot> current, sp<Snapshot> previous) { 188d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Unbind current FBO and restore previous one 189d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Most of the time, previous->fbo will be 0 to bind the default buffer 190d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glBindFramebuffer(GL_FRAMEBUFFER, previous->fbo); 1915cbbce535744b89df5ecea95de21ee3733298260Romain Guy 192d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Restore the clip from the previous snapshot 193d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy const Rect& clip = previous->getMappedClip(); 194d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 195bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 196d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Compute the correct texture coordinates for the FBO texture 197d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // The texture is currently as big as the window but drawn with 198d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // a quad of the appropriate size 199d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy const Rect& layer = current->layer; 200d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy Rect texCoords(current->layer); 201d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mSnapshot->transform.mapRect(texCoords); 2025cbbce535744b89df5ecea95de21ee3733298260Romain Guy 203d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy const float u1 = texCoords.left / float(mWidth); 204d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy const float v1 = (mHeight - texCoords.top) / float(mHeight); 205d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy const float u2 = texCoords.right / float(mWidth); 206d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy const float v2 = (mHeight - texCoords.bottom) / float(mHeight); 207bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 208d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy resetDrawTextureTexCoords(u1, v1, u2, v1); 209bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 210d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy drawTextureRect(layer.left, layer.top, layer.right, layer.bottom, 211c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy current->texture, current->alpha, current->mode, true, true); 212bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 213d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy resetDrawTextureTexCoords(0.0f, 1.0f, 1.0f, 0.0f); 214d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 215d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glDeleteFramebuffers(1, ¤t->fbo); 216d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glDeleteTextures(1, ¤t->texture); 217bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 218bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 219f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 220bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy// Layers 221bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 222bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 223bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayer(float left, float top, float right, float bottom, 224bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const SkPaint* p, int flags) { 225d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int count = saveSnapshot(); 226d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 227d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int alpha = 255; 228d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy SkXfermode::Mode mode; 229d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 230d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (p) { 231d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy alpha = p->getAlpha(); 232d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 233d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (!isMode) { 234d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy // Assume SRC_OVER 235d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 236d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 237d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } else { 238d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 239d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 240d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 241d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, mode, flags); 242d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 243d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 244bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 245bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 246bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayerAlpha(float left, float top, float right, float bottom, 247bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int alpha, int flags) { 248bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int count = saveSnapshot(); 249d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, SkXfermode::kSrcOver_Mode, flags); 250d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 251d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 252bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 253d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guybool OpenGLRenderer::createLayer(sp<Snapshot> snapshot, float left, float top, 254d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy float right, float bottom, int alpha, SkXfermode::Mode mode,int flags) { 255bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Generate the FBO and attach the texture 256d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glGenFramebuffers(1, &snapshot->fbo); 257d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glBindFramebuffer(GL_FRAMEBUFFER, snapshot->fbo); 258bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 259bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Generate the texture in which the FBO will draw 260d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glGenTextures(1, &snapshot->texture); 261d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glBindTexture(GL_TEXTURE_2D, snapshot->texture); 262bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 263bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // The FBO will not be scaled, so we can use lower quality filtering 264bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 265bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 2665cbbce535744b89df5ecea95de21ee3733298260Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2675cbbce535744b89df5ecea95de21ee3733298260Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 268bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 269bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // TODO ***** IMPORTANT ***** 270bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Creating a texture-backed FBO works only if the texture is the same size 271bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // as the original rendering buffer (in this case, mWidth and mHeight.) 272bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // This is expensive and wasteful and must be fixed. 2735cbbce535744b89df5ecea95de21ee3733298260Romain Guy // TODO Additionally we should use an FBO cache 274bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 275bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const GLsizei width = mWidth; //right - left; 276bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const GLsizei height = mHeight; //bottom - right; 277bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 278bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const GLint format = (flags & SkCanvas::kHasAlphaLayer_SaveFlag) ? GL_RGBA : GL_RGB; 279bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, GL_UNSIGNED_BYTE, NULL); 280bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glBindTexture(GL_TEXTURE_2D, 0); 281bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 282bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Bind texture to FBO 283bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 284d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy snapshot->texture, 0); 285bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 286bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); 287bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (status != GL_FRAMEBUFFER_COMPLETE) { 288bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy LOGD("Framebuffer incomplete %d", status); 289bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 290d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glDeleteFramebuffers(1, &snapshot->fbo); 291d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy glDeleteTextures(1, &snapshot->texture); 292d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 293d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return false; 294bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 295bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain 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 301d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return true; 302bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 303bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 304bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 305f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Transforms 306f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 307f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 308f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::translate(float dx, float dy) { 3097ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.translate(dx, dy, 0.0f); 3107ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 311f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 312f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 313f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::rotate(float degrees) { 3147ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.rotate(degrees, 0.0f, 0.0f, 1.0f); 3157ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 316f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 317f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 318f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::scale(float sx, float sy) { 3197ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.scale(sx, sy, 1.0f); 3207ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 321f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 322f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 323f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::setMatrix(SkMatrix* matrix) { 3247ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.load(*matrix); 3257ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 326f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 327f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 328f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::getMatrix(SkMatrix* matrix) { 3297ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.copyTo(*matrix); 330f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 331f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 332f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::concatMatrix(SkMatrix* matrix) { 3337ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mat4 m(*matrix); 3347ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.multiply(m); 3357ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 336f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 337f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 338f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 339f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Clipping 340f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 341f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 342bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::setScissorFromClip() { 3437ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy const Rect& clip = mSnapshot->getMappedClip(); 3447ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 3459d5316e3f56d138504565ff311145ac01621dff4Romain Guy} 3469d5316e3f56d138504565ff311145ac01621dff4Romain Guy 3479d5316e3f56d138504565ff311145ac01621dff4Romain Guyconst Rect& OpenGLRenderer::getClipBounds() { 3487ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSnapshot->clipRect; 349bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 350bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 351c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guybool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) { 352c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy /* 353c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * The documentation of quickReject() indicates that the specified rect 354c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * is transformed before being compared to the clip rect. However, the 355c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * clip rect is not stored transformed in the snapshot and can thus be 356c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * compared directly 357c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * 358c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * The following code can be used instead to performed a mapped comparison: 359c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * 360c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * mSnapshot->transform.mapRect(r); 361c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * const Rect& clip = mSnapshot->getMappedClip(); 362c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * return !clip.intersects(r); 363c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy */ 364c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy Rect r(left, top, right, bottom); 365c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy return !mSnapshot->clipRect.intersects(r); 366c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 367c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy 368bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::clipRect(float left, float top, float right, float bottom) { 3697ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool clipped = mSnapshot->clipRect.intersect(left, top, right, bottom); 3707ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (clipped) { 3717ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagClipSet; 3727ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 3737ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 3747ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return clipped; 375e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 376e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 377f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 378f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Drawing 379f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 380f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 381c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, float left, float top, const SkPaint* paint) { 382c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy Texture* texture = mTextureCache.get(bitmap); 383c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 384c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy SkXfermode::Mode mode; 385c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy int alpha; 386c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 387c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy if (paint) { 388c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy const bool isMode = SkXfermode::IsMode(paint->getXfermode(), &mode); 389c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy if (!isMode) { 390c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy // Assume SRC_OVER 391c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy mode = SkXfermode::kSrcOver_Mode; 392c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy } 393c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 394c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy // Skia draws using the color's alpha channel if < 255 395c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy // Otherwise, it uses the paint's alpha 396c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy int color = paint->getColor(); 397c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy alpha = (color >> 24) & 0xFF; 398c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy if (alpha == 255) { 399c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy alpha = paint->getAlpha(); 400c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy } 401c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy } else { 402c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy mode = SkXfermode::kSrcOver_Mode; 403c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy alpha = 255; 404c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy } 405c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 406c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy drawTextureRect(left, top, left + texture->width, top + texture->height, texture->id, 407c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy alpha / 255.0f, mode, texture->blend, true); 408ce0537b80087a6225273040a987414b1dd081aa0Romain Guy} 409ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 41085bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) { 411c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy const Rect& clip = mSnapshot->clipRect; 412026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode); 413c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 4149d5316e3f56d138504565ff311145ac01621dff4Romain Guy 415bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawRect(float left, float top, float right, float bottom, const SkPaint* p) { 416026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy SkXfermode::Mode mode; 417026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 418026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 419026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (!isMode) { 420026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Assume SRC_OVER 421026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mode = SkXfermode::kSrcOver_Mode; 422026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 423026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 424026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Skia draws using the color's alpha channel if < 255 425026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Otherwise, it uses the paint's alpha 426026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color = p->getColor(); 427026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (((color >> 24) & 0xFF) == 255) { 428026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy color |= p->getAlpha() << 24; 429026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 430026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 431026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(left, top, right, bottom, color, mode); 432c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 4339d5316e3f56d138504565ff311145ac01621dff4Romain Guy 434026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, 435026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color, SkXfermode::Mode mode) { 436026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const int alpha = (color >> 24) & 0xFF; 437026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const bool blend = alpha < 255 || mode != SkXfermode::kSrcOver_Mode; 438026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 439026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLfloat a = alpha / 255.0f; 440026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLfloat r = ((color >> 16) & 0xFF) / 255.0f; 441026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLfloat g = ((color >> 8) & 0xFF) / 255.0f; 442026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLfloat b = ((color ) & 0xFF) / 255.0f; 443026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 444026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (blend) { 445026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy glEnable(GL_BLEND); 446026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy glBlendFunc(gBlends[mode].src, gBlends[mode].dst); 447026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 4489d5316e3f56d138504565ff311145ac01621dff4Romain Guy 449c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy mModelView.loadTranslate(left, top, 0.0f); 450c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 4519d5316e3f56d138504565ff311145ac01621dff4Romain Guy 452c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy mDrawColorShader->use(&mOrthoMatrix[0], &mModelView.data[0], &mSnapshot->transform.data[0]); 4539d5316e3f56d138504565ff311145ac01621dff4Romain Guy 454c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy const GLvoid* p = &gDrawColorVertices[0].position[0]; 4559d5316e3f56d138504565ff311145ac01621dff4Romain Guy 456c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glEnableVertexAttribArray(mDrawColorShader->position); 457c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glVertexAttribPointer(mDrawColorShader->position, 2, GL_FLOAT, GL_FALSE, 458c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy gDrawColorVertexStride, p); 459c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glVertexAttrib4f(mDrawColorShader->color, r, g, b, a); 4609d5316e3f56d138504565ff311145ac01621dff4Romain Guy 461c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gDrawColorVertexCount); 4629d5316e3f56d138504565ff311145ac01621dff4Romain Guy 463c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glDisableVertexAttribArray(mDrawColorShader->position); 464026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 465026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (blend) { 466026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy glDisable(GL_BLEND); 467026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 46885bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy} 46985bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 470bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 471c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend, bool isPremultiplied) { 472bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.loadTranslate(left, top, 0.0f); 473bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.scale(right - left, bottom - top, 1.0f); 474bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 475bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mDrawTextureShader->use(&mOrthoMatrix[0], &mModelView.data[0], &mSnapshot->transform.data[0]); 476bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 477c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy if (blend || alpha < 1.0f || mode != SkXfermode::kSrcOver_Mode) { 478c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy GLenum sourceMode = gBlends[mode].src; 479c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy if (!isPremultiplied && sourceMode == GL_ONE) { 480c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy sourceMode = GL_SRC_ALPHA; 481c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy } 482d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 483c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy glEnable(GL_BLEND); 484c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy glBlendFunc(sourceMode, gBlends[mode].dst); 485c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy } 486bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 487bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 488bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 489c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy // TODO handle tiling and filtering here 490c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 491bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glActiveTexture(GL_TEXTURE0); 492bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glUniform1i(mDrawTextureShader->sampler, 0); 493bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 494026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLvoid* p = &mDrawTextureVertices[0].position[0]; 495026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLvoid* t = &mDrawTextureVertices[0].texture[0]; 496bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 497bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glEnableVertexAttribArray(mDrawTextureShader->position); 498bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glVertexAttribPointer(mDrawTextureShader->position, 2, GL_FLOAT, GL_FALSE, 499bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy gDrawTextureVertexStride, p); 500bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 501bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glEnableVertexAttribArray(mDrawTextureShader->texCoords); 502bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glVertexAttribPointer(mDrawTextureShader->texCoords, 2, GL_FLOAT, GL_FALSE, 503bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy gDrawTextureVertexStride, t); 504bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 505bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glVertexAttrib4f(mDrawTextureShader->color, 1.0f, 1.0f, 1.0f, alpha); 506bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 507bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gDrawTextureVertexCount); 508bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 509bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDisableVertexAttribArray(mDrawTextureShader->position); 510bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDisableVertexAttribArray(mDrawTextureShader->texCoords); 511bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 512bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glBindTexture(GL_TEXTURE_2D, 0); 513bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDisable(GL_BLEND); 514bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 515bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 516026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) { 517026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[0].texture[0] = u1; 518026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[0].texture[1] = v2; 519026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[1].texture[0] = u2; 520026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[1].texture[1] = v2; 521026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[2].texture[0] = u1; 522026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[2].texture[1] = v1; 523026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[3].texture[0] = u2; 524026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[3].texture[1] = v1; 525026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy} 526026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 5279d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 528e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy}; // namespace android 529