486590963e
The fix is to track when we issue GL drawing commands, and to skip the call to eglSwapBuffers() when a DisplayList does not result in any actual rendering calls to GL. Issue #6364143 QuickMuni list items and buttons flicker instead of fade Change-Id: I60a02c61a58c32d92481a1e814b4c8a49c6a37a3
90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_HWUI_DRAW_GL_INFO_H
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#define ANDROID_HWUI_DRAW_GL_INFO_H
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namespace android {
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namespace uirenderer {
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/**
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* Structure used by OpenGLRenderer::callDrawGLFunction() to pass and
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* receive data from OpenGL functors.
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*/
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struct DrawGlInfo {
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// Input: current clip rect
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int clipLeft;
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int clipTop;
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int clipRight;
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int clipBottom;
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// Input: current width/height of destination surface
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int width;
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int height;
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// Input: is the render target an FBO
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bool isLayer;
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// Input: current transform matrix, in OpenGL format
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float transform[16];
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// Output: dirty region to redraw
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float dirtyLeft;
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float dirtyTop;
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float dirtyRight;
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float dirtyBottom;
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/**
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* Values used as the "what" parameter of the functor.
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*/
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enum Mode {
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// Indicates that the functor is called to perform a draw
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kModeDraw,
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// Indicates the the functor is called only to perform
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// processing and that no draw should be attempted
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kModeProcess
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};
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/**
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* Values used by OpenGL functors to tell the framework
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* what to do next.
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*/
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enum Status {
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// The functor is done
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kStatusDone = 0x0,
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// The functor is requesting a redraw (the clip rect
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// used by the redraw is specified by DrawGlInfo.)
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// The rest of the UI might redraw too.
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kStatusDraw = 0x1,
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// The functor needs to be invoked again but will
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// not redraw. Only the functor is invoked again
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// (unless another functor requests a redraw.)
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kStatusInvoke = 0x2,
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// DisplayList actually issued GL drawing commands.
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// This is used to signal the HardwareRenderer that the
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// buffers should be flipped - otherwise, there were no
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// changes to the buffer, so no need to flip. Some hardware
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// has issues with stale buffer contents when no GL
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// commands are issued.
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kStatusDrew = 0x4
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};
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}; // struct DrawGlInfo
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}; // namespace uirenderer
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}; // namespace android
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#endif // ANDROID_HWUI_DRAW_GL_INFO_H
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