416 lines
13 KiB
C++
416 lines
13 KiB
C++
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/*
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* Copyright (c) 2014, The Linux Foundation. All rights reserved.
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* Not a Contribution.
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*
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* Copyright (C) 2007 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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#define ATRACE_TAG ATRACE_TAG_GRAPHICS
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//#define LOG_NDEBUG 0
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#include <stdlib.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <time.h>
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#include <utils/Errors.h>
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#include <utils/Log.h>
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#include <utils/Trace.h>
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#include <GLES/gl.h>
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#include <GLES2/gl2.h>
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#include "LayerBlur.h"
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#include "SurfaceFlinger.h"
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#include "DisplayDevice.h"
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#include "RenderEngine/RenderEngine.h"
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namespace android {
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// ---------------------------------------------------------------------------
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// Automatically disables scissor test and restores it when destroyed
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class ScopedScissorDisabler {
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bool scissorEnabled;
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public:
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ScopedScissorDisabler(bool enabled) : scissorEnabled(enabled) {
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if(scissorEnabled) {
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glDisable(GL_SCISSOR_TEST);
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}
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}
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~ScopedScissorDisabler() {
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if(scissorEnabled) {
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glEnable(GL_SCISSOR_TEST);
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}
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};
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};
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static void setupMeshPartial(Mesh& mesh, Rect rcDraw, Rect rcTexture, int texWidth, int texHeight, int viewportHeight) {
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Mesh::VertexArray<vec2> position(mesh.getPositionArray<vec2>());
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position[0] = vec2(rcDraw.left, rcDraw.top);
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position[1] = vec2(rcDraw.left, rcDraw.bottom);
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position[2] = vec2(rcDraw.right, rcDraw.bottom);
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position[3] = vec2(rcDraw.right, rcDraw.top);
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for(size_t i=0; i<4; ++i) {
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position[i].y = viewportHeight - position[i].y;
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}
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Mesh::VertexArray<vec2> texCoords(mesh.getTexCoordArray<vec2>());
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texCoords[0] = vec2(rcTexture.left/(float)texWidth, 1.0f - rcTexture.top/(float)texHeight);
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texCoords[1] = vec2(rcTexture.left/(float)texWidth, 1.0f - rcTexture.bottom/(float)texHeight);
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texCoords[2] = vec2(rcTexture.right/(float)texWidth, 1.0f - rcTexture.bottom/(float)texHeight);
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texCoords[3] = vec2(rcTexture.right/(float)texWidth, 1.0f - rcTexture.top/(float)texHeight);
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}
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static void setupMesh(Mesh& mesh, int width, int height, int viewportHeight) {
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Mesh::VertexArray<vec2> position(mesh.getPositionArray<vec2>());
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position[0] = vec2(0, 0);
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position[1] = vec2(0, height);
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position[2] = vec2(width, height);
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position[3] = vec2(width, 0);
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for(size_t i=0; i<4; ++i) {
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position[i].y = viewportHeight - position[i].y;
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}
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Mesh::VertexArray<vec2> texCoords(mesh.getTexCoordArray<vec2>());
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texCoords[0] = vec2(0, 1.0f);
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texCoords[1] = vec2(0, 0);
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texCoords[2] = vec2(1.0f, 0);
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texCoords[3] = vec2(1.0f, 1.0f);
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}
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LayerBlur::LayerBlur(SurfaceFlinger* flinger, const sp<Client>& client,
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const String8& name, uint32_t w, uint32_t h, uint32_t flags)
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: Layer(flinger, client, name, w, h, flags), mBlurMaskSampling(1), mBlurMaskAlphaThreshold(0.0f)
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,mLastFrameSequence(0)
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{
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#ifdef UI_BLUR
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mBlurToken = qtiblur::initBlurToken();
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#endif
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GLuint texnames[3];
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mFlinger->getRenderEngine().genTextures(3, texnames);
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mTextureCapture.init(Texture::TEXTURE_2D, texnames[0]);
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mTextureBlur.init(Texture::TEXTURE_2D, texnames[1]);
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mTextureMasking.init(Texture::TEXTURE_2D, texnames[2]);
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}
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LayerBlur::~LayerBlur() {
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#ifdef UI_BLUR
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qtiblur::releaseBlurToken(mBlurToken);
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#endif
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releaseFbo(mFboCapture);
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releaseFbo(mFboMasking);
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mFlinger->deleteTextureAsync(mTextureCapture.getTextureName());
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mFlinger->deleteTextureAsync(mTextureBlur.getTextureName());
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mFlinger->deleteTextureAsync(mTextureMasking.getTextureName());
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}
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void LayerBlur::onDraw(const sp<const DisplayDevice>& hw, const Region& /*clip*/,
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bool useIdentityTransform)
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{
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clock_t t1 = clock();
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const ScopedTrace traceTotal(ATRACE_TAG, "Blur.onDraw");
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const Layer::State& s(getDrawingState());
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if (s.alpha==0) {
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return;
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}
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/////
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// NOTE:
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//
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// Scissor test has been turned on by SurfaceFlinger for NON-primary display
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// We need to turn off the scissor test during our fbo drawing
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GLboolean isScissorEnabled = false;
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glGetBooleanv(GL_SCISSOR_TEST, &isScissorEnabled);
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ScopedScissorDisabler _(isScissorEnabled);
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//
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/////
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int hwWidth = hw->getWidth();
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int hwHeight = hw->getHeight();
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RenderEngine& engine(mFlinger->getRenderEngine());
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bool savedProjectionYSwap = engine.getProjectionYSwap();
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Rect savedProjectionSourceCrop = engine.getProjectionSourceCrop();
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Transform::orientation_flags savedProjectionRotation = engine.getProjectionRotation();
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size_t savedViewportWidth = engine.getViewportWidth();
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size_t savedViewportHeight = engine.getViewportHeight();
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if (mLastFrameSequence != mFlinger->mActiveFrameSequence ||
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mTextureBlur.getWidth() == 0 || mTextureBlur.getHeight() == 0) {
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// full drawing needed.
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// capture
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if (!captureScreen(hw, mFboCapture, mTextureCapture, hwWidth, hwHeight)) {
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return;
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}
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// blur
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size_t outTexWidth = mTextureBlur.getWidth();
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size_t outTexHeight = mTextureBlur.getHeight();
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#ifdef UI_BLUR
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if (!qtiblur::blur(mBlurToken,
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s.blur,
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mTextureCapture.getTextureName(),
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mTextureCapture.getWidth(),
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mTextureCapture.getHeight(),
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mTextureBlur.getTextureName(),
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&outTexWidth,
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&outTexHeight)) {
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return;
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}
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#endif
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// mTextureBlur now has "Blurred image"
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mTextureBlur.setDimensions(outTexWidth, outTexHeight);
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} else {
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// We can just re-use mTextureBlur.
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// SurfaceFlinger or other LayerBlur object called my draw() multiple times
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// while making one frame.
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//
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// Fall through
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}
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// masking
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bool masking = false;
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sp<Layer> maskLayer = mBlurMaskLayer.promote();
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if (maskLayer != 0) {
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// The larger sampling, the faster drawing.
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// The smaller sampling, the prettier out line.
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int sampling = mBlurMaskSampling >= 1 ? mBlurMaskSampling : 1;
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//ALOGV("maskLayer available, sampling:%d", sampling);
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masking = drawMaskLayer(maskLayer, hw, mFboMasking, hwWidth, hwHeight, sampling, mTextureMasking);
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}
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// final draw
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doDrawFinal(hw,
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savedViewportWidth, savedViewportHeight,
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savedProjectionSourceCrop,
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savedProjectionYSwap,
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savedProjectionRotation,
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useIdentityTransform,
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masking ? &mTextureMasking : 0
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);
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mLastFrameSequence = mFlinger->mActiveFrameSequence;
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clock_t t2 = clock();
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ALOGV("onDraw took %d ms", (int)(1000*(t2-t1)/CLOCKS_PER_SEC));
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}
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bool LayerBlur::captureScreen(const sp<const DisplayDevice>& hw, FBO& fbo, Texture& texture, int width, int height) {
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ATRACE_CALL();
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ensureFbo(fbo, width, height, texture.getTextureName());
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if(fbo.fbo == 0) {
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ALOGE("captureScreen(). fbo.fbo == 0");
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return false;
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}
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GLint savedFramebuffer = 0;
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glGetIntegerv(GL_FRAMEBUFFER_BINDING, &savedFramebuffer);
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glBindFramebuffer(GL_FRAMEBUFFER, (GLuint)fbo.fbo);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
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texture.getTextureTarget(),
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texture.getTextureName(), 0);
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mFlinger->getRenderEngine().clearWithColor(0.0f, 0.0f, 0.0f, 1.0f);
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mFlinger->renderScreenImplLocked(
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hw,
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Rect(0,0,width,height),
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width, height,
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0, getDrawingState().z-1,
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false,
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false,
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Transform::ROT_0);
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glBindFramebuffer(GL_FRAMEBUFFER, savedFramebuffer);
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texture.setDimensions(width, height);
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return true;
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}
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bool LayerBlur::drawMaskLayer(sp<Layer>& maskLayer, const sp<const DisplayDevice>& hw,
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FBO& fbo, int width, int height, int sampling, Texture& texture) {
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// Draw maskLayer into fbo
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ATRACE_CALL();
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int maskWidth = width/sampling;
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int maskHeight = height/sampling;
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ensureFbo(fbo, maskWidth, maskHeight, texture.getTextureName());
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if(fbo.fbo == 0) {
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ALOGE("drawMaskLayer(). fbo.fbo == 0");
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return false;
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}
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GLint savedFramebuffer = 0;
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glGetIntegerv(GL_FRAMEBUFFER_BINDING, &savedFramebuffer);
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glBindFramebuffer(GL_FRAMEBUFFER, (GLuint)fbo.fbo);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
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texture.getTextureTarget(),
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texture.getTextureName(), 0);
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mFlinger->getRenderEngine().setViewportAndProjection(
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maskWidth, maskHeight,
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Rect(0,0,width,height),
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height,
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false,
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Transform::ROT_0
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);
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setupMesh(mMesh, width, height, height);
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mFlinger->getRenderEngine().clearWithColor(0.0f, 0.0f, 0.0f, 0.0f); // alpha must be ZERO
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maskLayer->draw(hw);
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glBindFramebuffer(GL_FRAMEBUFFER, savedFramebuffer);
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texture.setDimensions(maskWidth, maskHeight);
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return true;
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}
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/*
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* draw final texture into outer framebuffer
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*/
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void LayerBlur::doDrawFinal(const sp<const DisplayDevice>& hw,
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int savedViewportWidth, int savedViewportHeight,
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Rect savedProjectionSourceCrop,
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bool savedProjectionYSwap,
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Transform::orientation_flags savedRotation,
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bool useIdentityTransform,
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Texture* maskTexture
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) {
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ATRACE_CALL();
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int hwWidth = hw->getWidth();
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int hwHeight = hw->getHeight();
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RenderEngine& engine(mFlinger->getRenderEngine());
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const Layer::State& s(getDrawingState());
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Transform trToDraw(useIdentityTransform ? hw->getTransform() : hw->getTransform() * s.transform);
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Transform trToMapTexture(hw->getTransform() * s.transform);
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Rect frameToDraw(trToDraw.transform(Rect(s.active.w, s.active.h)));
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Rect frameToMapTexture(trToMapTexture.transform(Rect(s.active.w, s.active.h)));
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engine.setViewportAndProjection(
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savedViewportWidth, savedViewportHeight,
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savedProjectionSourceCrop,
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hwHeight,
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savedProjectionYSwap,
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savedRotation
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);
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const mat4 identity;
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float textureMatrix[16];
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memcpy(textureMatrix, identity.asArray(), sizeof(textureMatrix));
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//mTextureBlur.setDimensions(hwWidth, hwHeight);
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mTextureBlur.setFiltering(true);
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mTextureBlur.setMatrix(textureMatrix);
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if (maskTexture != 0) {
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maskTexture->setFiltering(false);
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maskTexture->setMatrix(textureMatrix);
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}
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setupMeshPartial(mMesh, frameToDraw, frameToMapTexture, hwWidth, hwHeight,
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savedProjectionSourceCrop.height());
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engine.setupLayerTexturing(mTextureBlur);
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engine.setupLayerBlending(mPremultipliedAlpha, isOpaque(s), s.alpha);
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if (maskTexture) {
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engine.setupLayerMasking(*maskTexture, mBlurMaskAlphaThreshold);
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}
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engine.drawMesh(mMesh);
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engine.disableLayerMasking();
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engine.disableBlending();
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engine.disableTexturing();
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}
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bool LayerBlur::isVisible() const {
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const Layer::State& s(getDrawingState());
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return !(s.flags & layer_state_t::eLayerHidden) && s.alpha;
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}
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bool LayerBlur::setBlurMaskLayer(sp<Layer>& maskLayer) {
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if (maskLayer == mBlurMaskLayer) {
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return false;
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}
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mBlurMaskLayer = maskLayer;
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return true;
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}
|
||
|
|
|
||
|
|
|
||
|
|
void LayerBlur::initFbo(FBO& fbobj, int width, int height, int textureName) {
|
||
|
|
GLuint fbo=0;
|
||
|
|
|
||
|
|
glGenFramebuffers(1, &fbo);
|
||
|
|
glBindTexture(GL_TEXTURE_2D, textureName);
|
||
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height,
|
||
|
|
0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
|
||
|
|
glBindTexture(GL_TEXTURE_2D, 0);
|
||
|
|
|
||
|
|
GLint savedFramebuffer = 0;
|
||
|
|
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &savedFramebuffer);
|
||
|
|
|
||
|
|
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
|
||
|
|
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
|
||
|
|
GL_TEXTURE_2D, textureName, 0);
|
||
|
|
glBindFramebuffer(GL_FRAMEBUFFER, savedFramebuffer);
|
||
|
|
|
||
|
|
fbobj.fbo = fbo;
|
||
|
|
fbobj.width = width;
|
||
|
|
fbobj.height = height;
|
||
|
|
}
|
||
|
|
|
||
|
|
void LayerBlur::releaseFbo(FBO& fbo) {
|
||
|
|
if(fbo.fbo != 0) {
|
||
|
|
glDeleteFramebuffers(1, (GLuint*)&fbo.fbo);
|
||
|
|
}
|
||
|
|
fbo.fbo = 0;
|
||
|
|
fbo.width = 0;
|
||
|
|
fbo.height = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void LayerBlur::ensureFbo(FBO& fbo, int width, int height, int textureName) {
|
||
|
|
if(fbo.fbo != 0) {
|
||
|
|
if(fbo.width != width || fbo.height != height) {
|
||
|
|
releaseFbo(fbo);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if(fbo.fbo == 0) {
|
||
|
|
initFbo(fbo, width, height, textureName);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// ---------------------------------------------------------------------------
|
||
|
|
|
||
|
|
}; // namespace android
|