DrawGlInfo.h revision c70e89e2a024645d425b49db2bbf3f20ed68e518
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef ANDROID_HWUI_DRAW_GL_INFO_H 18#define ANDROID_HWUI_DRAW_GL_INFO_H 19 20namespace android { 21namespace uirenderer { 22 23/** 24 * Structure used by OpenGLRenderer::callDrawGLFunction() to pass and 25 * receive data from OpenGL functors. 26 */ 27struct DrawGlInfo { 28 // Input: current clip rect 29 int clipLeft; 30 int clipTop; 31 int clipRight; 32 int clipBottom; 33 34 // Input: is the render target an FBO 35 bool isLayer; 36 37 // Input: current transform matrix, in OpenGL format 38 float transform[16]; 39 40 // Output: dirty region to redraw 41 float dirtyLeft; 42 float dirtyTop; 43 float dirtyRight; 44 float dirtyBottom; 45 46 /** 47 * Values used as the "what" parameter of the functor. 48 */ 49 enum Mode { 50 // Indicates that the functor is called to perform a draw 51 kModeDraw, 52 // Indicates the the functor is called only to perform 53 // processing and that no draw should be attempted 54 kModeProcess 55 }; 56 57 /** 58 * Values used by OpenGL functors to tell the framework 59 * what to do next. 60 */ 61 enum Status { 62 // The functor is done 63 kStatusDone = 0x0, 64 // The functor is requesting a redraw (the clip rect 65 // used by the redraw is specified by DrawGlInfo.) 66 // The rest of the UI might redraw too. 67 kStatusDraw = 0x1, 68 // The functor needs to be invoked again but will 69 // not redraw. Only the functor is invoked again 70 // (unless another functor requests a redraw.) 71 kStatusInvoke = 0x2 72 }; 73}; // struct DrawGlInfo 74 75}; // namespace uirenderer 76}; // namespace android 77 78#endif // ANDROID_HWUI_DRAW_GL_INFO_H 79