OpenGLRenderer.cpp revision 026c5e16704e817cac7d9c382914c947e34f87e0
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 36bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#define SV(x, y) { { x, y } } 37bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#define FV(x, y, u, v) { { x, y }, { u, v } } 389d5316e3f56d138504565ff311145ac01621dff4Romain Guy 399d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 409d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Globals 419d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 429d5316e3f56d138504565ff311145ac01621dff4Romain Guy 43026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const SimpleVertex gDrawColorVertices[] = { 44bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy SV(0.0f, 0.0f), 45bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy SV(1.0f, 0.0f), 46bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy SV(0.0f, 1.0f), 47bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy SV(1.0f, 1.0f) 489d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; 49026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const GLsizei gDrawColorVertexStride = sizeof(SimpleVertex); 50026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const GLsizei gDrawColorVertexCount = 4; 519d5316e3f56d138504565ff311145ac01621dff4Romain Guy 52026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// This array is never used directly but used as a memcpy source in the 53026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// OpenGLRenderer constructor 54026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const TextureVertex gDrawTextureVertices[] = { 55bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy FV(0.0f, 0.0f, 0.0f, 1.0f), 56bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy FV(1.0f, 0.0f, 1.0f, 1.0f), 57bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy FV(0.0f, 1.0f, 0.0f, 0.0f), 58bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy FV(1.0f, 1.0f, 1.0f, 0.0f) 59bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy}; 60026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const GLsizei gDrawTextureVertexStride = sizeof(TextureVertex); 61026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const GLsizei gDrawTextureVertexCount = 4; 62026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 63026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// In this array, the index of each Blender equals the value of the first 64026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// entry. For instance, gBlends[1] == gBlends[SkXfermode::kSrc_Mode] 65026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const Blender gBlends[] = { 66026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 67026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrc_Mode, GL_ONE, GL_ZERO }, 68026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDst_Mode, GL_ZERO, GL_ONE }, 69026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 70026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 71026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcIn_Mode, GL_DST_ALPHA, GL_ZERO }, 72026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 73026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 74026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 75026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 76026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 77026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 78026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy}; 79e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 80f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 81f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Constructors/destructor 82f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 83f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 8485bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain GuyOpenGLRenderer::OpenGLRenderer() { 8585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Create OpenGLRenderer"); 869d5316e3f56d138504565ff311145ac01621dff4Romain Guy 879d5316e3f56d138504565ff311145ac01621dff4Romain Guy mDrawColorShader = new DrawColorProgram; 88bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mDrawTextureShader = new DrawTextureProgram; 89026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 90026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy memcpy(mDrawTextureVertices, gDrawTextureVertices, sizeof(gDrawTextureVertices)); 91e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 92e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 9385bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain GuyOpenGLRenderer::~OpenGLRenderer() { 9485bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Destroy OpenGLRenderer"); 95e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 96e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 97f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 98f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Setup 99f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 100f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 10185bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::setViewport(int width, int height) { 10208ae317c21ec3086b5017672bba87420cc38a407Romain Guy glViewport(0, 0, width, height); 10308ae317c21ec3086b5017672bba87420cc38a407Romain Guy 10408ae317c21ec3086b5017672bba87420cc38a407Romain Guy mat4 ortho; 105c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy ortho.loadOrtho(0, width, height, 0, -1, 1); 10608ae317c21ec3086b5017672bba87420cc38a407Romain Guy ortho.copyTo(mOrthoMatrix); 107bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 108bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mWidth = width; 109bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mHeight = height; 110e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 111e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 11285bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::prepare() { 1137ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot = &mFirstSnapshot; 1147ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSaveCount = 0; 115f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 11608ae317c21ec3086b5017672bba87420cc38a407Romain Guy glDisable(GL_SCISSOR_TEST); 117bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 11808ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 11908ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClear(GL_COLOR_BUFFER_BIT); 120bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 12108ae317c21ec3086b5017672bba87420cc38a407Romain Guy glEnable(GL_SCISSOR_TEST); 122c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glScissor(0, 0, mWidth, mHeight); 123f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 124bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mSnapshot->clipRect.set(0.0f, 0.0f, mWidth, mHeight); 125bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 126bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 127f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 128f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// State management 129f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 130f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 131bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::getSaveCount() const { 1327ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSaveCount; 133bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 134bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 135bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::save(int flags) { 1367ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return saveSnapshot(); 137bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 138bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 139bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restore() { 1407ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (mSaveCount == 0) return; 141bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1427ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (restoreSnapshot()) { 1437ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 1447ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 145bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 146bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 147bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restoreToCount(int saveCount) { 1487ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (saveCount <= 0 || saveCount > mSaveCount) return; 149bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1507ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = false; 151bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1527ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy while (mSaveCount != saveCount - 1) { 1537ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy restoreClip |= restoreSnapshot(); 1547ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 155bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 1567ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (restoreClip) { 1577ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 1587ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 159bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 160bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 161bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::saveSnapshot() { 1627ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot = new Snapshot(mSnapshot); 1637ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return ++mSaveCount; 164bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 165bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 166bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::restoreSnapshot() { 1677ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = mSnapshot->flags & Snapshot::kFlagClipSet; 168bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy bool restoreLayer = mSnapshot->flags & Snapshot::kFlagIsLayer; 169bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 170bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy sp<Snapshot> current = mSnapshot; 1717ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy sp<Snapshot> previous = mSnapshot->previous; 172bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 173bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (restoreLayer) { 174bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Unbind current FBO and restore previous one 175bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Most of the time, previous->fbo will be 0 to bind the default buffer 176bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, previous->fbo); 177bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1785cbbce535744b89df5ecea95de21ee3733298260Romain Guy // Restore the clip from the previous snapshot 1795cbbce535744b89df5ecea95de21ee3733298260Romain Guy const Rect& clip = previous->getMappedClip(); 1805cbbce535744b89df5ecea95de21ee3733298260Romain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 1815cbbce535744b89df5ecea95de21ee3733298260Romain Guy 1825cbbce535744b89df5ecea95de21ee3733298260Romain Guy // Compute the correct texture coordinates for the FBO texture 1835cbbce535744b89df5ecea95de21ee3733298260Romain Guy // The texture is currently as big as the window but drawn with 1845cbbce535744b89df5ecea95de21ee3733298260Romain Guy // a quad of the appropriate size 185bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const Rect& layer = current->layer; 1865cbbce535744b89df5ecea95de21ee3733298260Romain Guy Rect texCoords(current->layer); 1875cbbce535744b89df5ecea95de21ee3733298260Romain Guy mSnapshot->transform.mapRect(texCoords); 1885cbbce535744b89df5ecea95de21ee3733298260Romain Guy 1895cbbce535744b89df5ecea95de21ee3733298260Romain Guy const float u1 = texCoords.left / float(mWidth); 1905cbbce535744b89df5ecea95de21ee3733298260Romain Guy const float v1 = (mHeight - texCoords.top) / float(mHeight); 1915cbbce535744b89df5ecea95de21ee3733298260Romain Guy const float u2 = texCoords.right / float(mWidth); 1925cbbce535744b89df5ecea95de21ee3733298260Romain Guy const float v2 = (mHeight - texCoords.bottom) / float(mHeight); 1935cbbce535744b89df5ecea95de21ee3733298260Romain Guy 1945cbbce535744b89df5ecea95de21ee3733298260Romain Guy resetDrawTextureTexCoords(u1, v1, u2, v1); 195bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1965cbbce535744b89df5ecea95de21ee3733298260Romain Guy drawTextureRect(layer.left, layer.top, layer.right, layer.bottom, 1975cbbce535744b89df5ecea95de21ee3733298260Romain Guy current->texture, current->alpha); 1985cbbce535744b89df5ecea95de21ee3733298260Romain Guy 1995cbbce535744b89df5ecea95de21ee3733298260Romain Guy resetDrawTextureTexCoords(0.0f, 1.0f, 1.0f, 0.0f); 200bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 201bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDeleteFramebuffers(1, ¤t->fbo); 202bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDeleteTextures(1, ¤t->texture); 203bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 204bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2057ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot = previous; 206bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mSaveCount--; 207bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2087ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return restoreClip; 209bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 210bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 211f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 212bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy// Layers 213bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 214bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 215bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayer(float left, float top, float right, float bottom, 216bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const SkPaint* p, int flags) { 217bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // TODO Implement 218bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy return saveSnapshot(); 219bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 220bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 221bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayerAlpha(float left, float top, float right, float bottom, 222bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int alpha, int flags) { 223bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int count = saveSnapshot(); 224bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 225bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mSnapshot->flags |= Snapshot::kFlagIsLayer; 226bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mSnapshot->alpha = alpha / 255.0f; 227bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mSnapshot->layer.set(left, top, right, bottom); 228bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 229bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Generate the FBO and attach the texture 230bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glGenFramebuffers(1, &mSnapshot->fbo); 231bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, mSnapshot->fbo); 232bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 233bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Generate the texture in which the FBO will draw 234bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glGenTextures(1, &mSnapshot->texture); 235bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glBindTexture(GL_TEXTURE_2D, mSnapshot->texture); 236bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 237bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // The FBO will not be scaled, so we can use lower quality filtering 238bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 239bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 2405cbbce535744b89df5ecea95de21ee3733298260Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 2415cbbce535744b89df5ecea95de21ee3733298260Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 242bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 243bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // TODO ***** IMPORTANT ***** 244bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Creating a texture-backed FBO works only if the texture is the same size 245bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // as the original rendering buffer (in this case, mWidth and mHeight.) 246bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // This is expensive and wasteful and must be fixed. 2475cbbce535744b89df5ecea95de21ee3733298260Romain Guy // TODO Additionally we should use an FBO cache 248bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 249bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const GLsizei width = mWidth; //right - left; 250bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const GLsizei height = mHeight; //bottom - right; 251bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 252bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const GLint format = (flags & SkCanvas::kHasAlphaLayer_SaveFlag) ? GL_RGBA : GL_RGB; 253bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, GL_UNSIGNED_BYTE, NULL); 254bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glBindTexture(GL_TEXTURE_2D, 0); 255bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 256bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy // Bind texture to FBO 257bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 258bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mSnapshot->texture, 0); 259bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 260bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); 261bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (status != GL_FRAMEBUFFER_COMPLETE) { 262bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy LOGD("Framebuffer incomplete %d", status); 263bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 264bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDeleteFramebuffers(1, &mSnapshot->fbo); 265bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDeleteTextures(1, &mSnapshot->texture); 266bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 267bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 268bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy return count; 269bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 270bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 271bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 272f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Transforms 273f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 274f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 275f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::translate(float dx, float dy) { 2767ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.translate(dx, dy, 0.0f); 2777ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 278f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 279f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 280f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::rotate(float degrees) { 2817ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.rotate(degrees, 0.0f, 0.0f, 1.0f); 2827ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 283f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 284f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 285f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::scale(float sx, float sy) { 2867ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.scale(sx, sy, 1.0f); 2877ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 288f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 289f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 290f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::setMatrix(SkMatrix* matrix) { 2917ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.load(*matrix); 2927ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 293f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 294f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 295f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::getMatrix(SkMatrix* matrix) { 2967ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.copyTo(*matrix); 297f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 298f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 299f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::concatMatrix(SkMatrix* matrix) { 3007ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mat4 m(*matrix); 3017ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->transform.multiply(m); 3027ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagDirtyTransform; 303f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 304f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 305f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 306f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Clipping 307f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 308f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 309bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::setScissorFromClip() { 3107ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy const Rect& clip = mSnapshot->getMappedClip(); 3117ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 3129d5316e3f56d138504565ff311145ac01621dff4Romain Guy} 3139d5316e3f56d138504565ff311145ac01621dff4Romain Guy 3149d5316e3f56d138504565ff311145ac01621dff4Romain Guyconst Rect& OpenGLRenderer::getClipBounds() { 3157ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSnapshot->clipRect; 316bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 317bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 318c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guybool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) { 319c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy /* 320c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * The documentation of quickReject() indicates that the specified rect 321c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * is transformed before being compared to the clip rect. However, the 322c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * clip rect is not stored transformed in the snapshot and can thus be 323c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * compared directly 324c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * 325c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * The following code can be used instead to performed a mapped comparison: 326c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * 327c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * mSnapshot->transform.mapRect(r); 328c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * const Rect& clip = mSnapshot->getMappedClip(); 329c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy * return !clip.intersects(r); 330c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy */ 331c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy Rect r(left, top, right, bottom); 332c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy return !mSnapshot->clipRect.intersects(r); 333c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 334c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy 335bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::clipRect(float left, float top, float right, float bottom) { 3367ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool clipped = mSnapshot->clipRect.intersect(left, top, right, bottom); 3377ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (clipped) { 3387ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mSnapshot->flags |= Snapshot::kFlagClipSet; 3397ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 3407ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 3417ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return clipped; 342e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 343e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 344f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 345f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Drawing 346f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 347f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 34885bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) { 349c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy const Rect& clip = mSnapshot->clipRect; 350026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode); 351c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 3529d5316e3f56d138504565ff311145ac01621dff4Romain Guy 353bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawRect(float left, float top, float right, float bottom, const SkPaint* p) { 354026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy SkXfermode::Mode mode; 355026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 356026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 357026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (!isMode) { 358026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Assume SRC_OVER 359026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mode = SkXfermode::kSrcOver_Mode; 360026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 361026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 362026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Skia draws using the color's alpha channel if < 255 363026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Otherwise, it uses the paint's alpha 364026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color = p->getColor(); 365026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (((color >> 24) & 0xFF) == 255) { 366026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy color |= p->getAlpha() << 24; 367026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 368026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 369026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(left, top, right, bottom, color, mode); 370c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 3719d5316e3f56d138504565ff311145ac01621dff4Romain Guy 372026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, 373026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color, SkXfermode::Mode mode) { 374026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const int alpha = (color >> 24) & 0xFF; 375026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const bool blend = alpha < 255 || mode != SkXfermode::kSrcOver_Mode; 376026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 377026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLfloat a = alpha / 255.0f; 378026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLfloat r = ((color >> 16) & 0xFF) / 255.0f; 379026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLfloat g = ((color >> 8) & 0xFF) / 255.0f; 380026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLfloat b = ((color ) & 0xFF) / 255.0f; 381026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 382026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (blend) { 383026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy glEnable(GL_BLEND); 384026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy glBlendFunc(gBlends[mode].src, gBlends[mode].dst); 385026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 3869d5316e3f56d138504565ff311145ac01621dff4Romain Guy 387c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy mModelView.loadTranslate(left, top, 0.0f); 388c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 3899d5316e3f56d138504565ff311145ac01621dff4Romain Guy 390c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy mDrawColorShader->use(&mOrthoMatrix[0], &mModelView.data[0], &mSnapshot->transform.data[0]); 3919d5316e3f56d138504565ff311145ac01621dff4Romain Guy 392c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy const GLvoid* p = &gDrawColorVertices[0].position[0]; 3939d5316e3f56d138504565ff311145ac01621dff4Romain Guy 394c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glEnableVertexAttribArray(mDrawColorShader->position); 395c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glVertexAttribPointer(mDrawColorShader->position, 2, GL_FLOAT, GL_FALSE, 396c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy gDrawColorVertexStride, p); 397c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glVertexAttrib4f(mDrawColorShader->color, r, g, b, a); 3989d5316e3f56d138504565ff311145ac01621dff4Romain Guy 399c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gDrawColorVertexCount); 4009d5316e3f56d138504565ff311145ac01621dff4Romain Guy 401c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glDisableVertexAttribArray(mDrawColorShader->position); 402026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 403026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy if (blend) { 404026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy glDisable(GL_BLEND); 405026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 40685bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy} 40785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 408bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 409bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy GLuint texture, float alpha) { 410bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.loadTranslate(left, top, 0.0f); 411bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.scale(right - left, bottom - top, 1.0f); 412bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 413bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mDrawTextureShader->use(&mOrthoMatrix[0], &mModelView.data[0], &mSnapshot->transform.data[0]); 414bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 4155cbbce535744b89df5ecea95de21ee3733298260Romain Guy // TODO Correctly set the blend function, based on texture format and xfermode 416bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glEnable(GL_BLEND); 417026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // For not pre-multiplied sources 418026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); 419bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 420bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 421bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 422bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glActiveTexture(GL_TEXTURE0); 423bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glUniform1i(mDrawTextureShader->sampler, 0); 424bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 425026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLvoid* p = &mDrawTextureVertices[0].position[0]; 426026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const GLvoid* t = &mDrawTextureVertices[0].texture[0]; 427bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 428bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glEnableVertexAttribArray(mDrawTextureShader->position); 429bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glVertexAttribPointer(mDrawTextureShader->position, 2, GL_FLOAT, GL_FALSE, 430bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy gDrawTextureVertexStride, p); 431bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 432bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glEnableVertexAttribArray(mDrawTextureShader->texCoords); 433bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glVertexAttribPointer(mDrawTextureShader->texCoords, 2, GL_FLOAT, GL_FALSE, 434bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy gDrawTextureVertexStride, t); 435bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 436bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glVertexAttrib4f(mDrawTextureShader->color, 1.0f, 1.0f, 1.0f, alpha); 437bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 438bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gDrawTextureVertexCount); 439bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 440bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDisableVertexAttribArray(mDrawTextureShader->position); 441bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDisableVertexAttribArray(mDrawTextureShader->texCoords); 442bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 443bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glBindTexture(GL_TEXTURE_2D, 0); 444bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy glDisable(GL_BLEND); 445bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 446bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 447026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) { 448026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[0].texture[0] = u1; 449026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[0].texture[1] = v2; 450026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[1].texture[0] = u2; 451026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[1].texture[1] = v2; 452026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[2].texture[0] = u1; 453026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[2].texture[1] = v1; 454026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[3].texture[0] = u2; 455026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy mDrawTextureVertices[3].texture[1] = v1; 456026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy} 457026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 4589d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 459e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy}; // namespace android 460