312 lines
10 KiB
C++
312 lines
10 KiB
C++
/*
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* Copyright (C) 2014 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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#include "renderstate/RenderState.h"
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#include "renderthread/CanvasContext.h"
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#include "renderthread/EglManager.h"
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#include "utils/GLUtils.h"
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namespace android {
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namespace uirenderer {
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RenderState::RenderState(renderthread::RenderThread& thread)
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: mRenderThread(thread)
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, mViewportWidth(0)
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, mViewportHeight(0)
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, mFramebuffer(0) {
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mThreadId = pthread_self();
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}
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RenderState::~RenderState() {
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LOG_ALWAYS_FATAL_IF(mBlend || mMeshState || mScissor || mStencil,
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"State object lifecycle not managed correctly");
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}
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void RenderState::onGLContextCreated() {
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LOG_ALWAYS_FATAL_IF(mBlend || mMeshState || mScissor || mStencil,
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"State object lifecycle not managed correctly");
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mBlend = new Blend();
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mMeshState = new MeshState();
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mScissor = new Scissor();
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mStencil = new Stencil();
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// This is delayed because the first access of Caches makes GL calls
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if (!mCaches) {
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mCaches = &Caches::createInstance(*this);
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}
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mCaches->init();
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mCaches->textureCache.setAssetAtlas(&mAssetAtlas);
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}
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static void layerLostGlContext(Layer* layer) {
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layer->onGlContextLost();
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}
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void RenderState::onGLContextDestroyed() {
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/*
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size_t size = mActiveLayers.size();
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if (CC_UNLIKELY(size != 0)) {
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ALOGE("Crashing, have %d contexts and %d layers at context destruction. isempty %d",
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mRegisteredContexts.size(), size, mActiveLayers.empty());
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mCaches->dumpMemoryUsage();
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for (std::set<renderthread::CanvasContext*>::iterator cit = mRegisteredContexts.begin();
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cit != mRegisteredContexts.end(); cit++) {
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renderthread::CanvasContext* context = *cit;
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ALOGE("Context: %p (root = %p)", context, context->mRootRenderNode.get());
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ALOGE(" Prefeteched layers: %zu", context->mPrefetechedLayers.size());
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for (std::set<RenderNode*>::iterator pit = context->mPrefetechedLayers.begin();
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pit != context->mPrefetechedLayers.end(); pit++) {
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(*pit)->debugDumpLayers(" ");
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}
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context->mRootRenderNode->debugDumpLayers(" ");
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}
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if (mActiveLayers.begin() == mActiveLayers.end()) {
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ALOGE("set has become empty. wat.");
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}
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for (std::set<const Layer*>::iterator lit = mActiveLayers.begin();
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lit != mActiveLayers.end(); lit++) {
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const Layer* layer = *(lit);
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ALOGE("Layer %p, state %d, texlayer %d, fbo %d, buildlayered %d",
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layer, layer->state, layer->isTextureLayer(), layer->getFbo(), layer->wasBuildLayered);
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}
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LOG_ALWAYS_FATAL("%d layers have survived gl context destruction", size);
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}
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*/
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// TODO: reset all cached state in state objects
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std::for_each(mActiveLayers.begin(), mActiveLayers.end(), layerLostGlContext);
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mAssetAtlas.terminate();
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mCaches->terminate();
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delete mBlend;
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mBlend = nullptr;
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delete mMeshState;
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mMeshState = nullptr;
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delete mScissor;
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mScissor = nullptr;
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delete mStencil;
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mStencil = nullptr;
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}
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void RenderState::setViewport(GLsizei width, GLsizei height) {
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mViewportWidth = width;
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mViewportHeight = height;
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glViewport(0, 0, mViewportWidth, mViewportHeight);
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}
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void RenderState::getViewport(GLsizei* outWidth, GLsizei* outHeight) {
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*outWidth = mViewportWidth;
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*outHeight = mViewportHeight;
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}
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void RenderState::bindFramebuffer(GLuint fbo) {
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if (mFramebuffer != fbo) {
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mFramebuffer = fbo;
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glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
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}
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}
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void RenderState::invokeFunctor(Functor* functor, DrawGlInfo::Mode mode, DrawGlInfo* info) {
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interruptForFunctorInvoke();
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(*functor)(mode, info);
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resumeFromFunctorInvoke();
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}
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void RenderState::interruptForFunctorInvoke() {
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mCaches->setProgram(nullptr);
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mCaches->textureState().resetActiveTexture();
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meshState().unbindMeshBuffer();
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meshState().unbindIndicesBuffer();
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meshState().resetVertexPointers();
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meshState().disableTexCoordsVertexArray();
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debugOverdraw(false, false);
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}
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void RenderState::resumeFromFunctorInvoke() {
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glViewport(0, 0, mViewportWidth, mViewportHeight);
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glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
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debugOverdraw(false, false);
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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scissor().invalidate();
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blend().invalidate();
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mCaches->textureState().activateTexture(0);
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mCaches->textureState().resetBoundTextures();
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}
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void RenderState::debugOverdraw(bool enable, bool clear) {
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if (mCaches->debugOverdraw && mFramebuffer == 0) {
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if (clear) {
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scissor().setEnabled(false);
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stencil().clear();
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}
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if (enable) {
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stencil().enableDebugWrite();
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} else {
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stencil().disable();
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}
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}
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}
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void RenderState::requireGLContext() {
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assertOnGLThread();
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mRenderThread.eglManager().requireGlContext();
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}
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void RenderState::assertOnGLThread() {
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pthread_t curr = pthread_self();
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LOG_ALWAYS_FATAL_IF(!pthread_equal(mThreadId, curr), "Wrong thread!");
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}
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class DecStrongTask : public renderthread::RenderTask {
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public:
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DecStrongTask(VirtualLightRefBase* object) : mObject(object) {}
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virtual void run() override {
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mObject->decStrong(nullptr);
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mObject = nullptr;
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delete this;
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}
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private:
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VirtualLightRefBase* mObject;
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};
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void RenderState::postDecStrong(VirtualLightRefBase* object) {
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mRenderThread.queue(new DecStrongTask(object));
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}
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///////////////////////////////////////////////////////////////////////////////
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// Render
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///////////////////////////////////////////////////////////////////////////////
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/*
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* Not yet supported:
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*
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* Textures + coordinates
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* SkiaShader
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* RoundRect clipping
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*/
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void RenderState::render(const Glop& glop) {
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const Glop::Mesh& mesh = glop.mesh;
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const Glop::Fill& shader = glop.fill;
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// --------------------------------------------
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// ---------- Shader + uniform setup ----------
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// --------------------------------------------
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mCaches->setProgram(shader.program);
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Glop::FloatColor color = shader.color;
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shader.program->setColor(color.r, color.g, color.b, color.a);
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shader.program->set(glop.transform.ortho,
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glop.transform.modelView,
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glop.transform.canvas,
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glop.transform.fudgingOffset);
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if (glop.fill.filterMode == ProgramDescription::kColorBlend) {
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const Glop::FloatColor& color = glop.fill.filter.color;
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glUniform4f(mCaches->program().getUniform("colorBlend"),
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color.r, color.g, color.b, color.a);
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} else if (glop.fill.filterMode == ProgramDescription::kColorMatrix) {
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glUniformMatrix4fv(mCaches->program().getUniform("colorMatrix"), 1, GL_FALSE,
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glop.fill.filter.matrix.matrix);
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glUniform4fv(mCaches->program().getUniform("colorMatrixVector"), 1,
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glop.fill.filter.matrix.vector);
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}
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// --------------------------------
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// ---------- Mesh setup ----------
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// --------------------------------
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// vertices
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bool force = meshState().bindMeshBufferInternal(mesh.vertexBufferObject)
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|| (mesh.vertices != nullptr);
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meshState().bindPositionVertexPointer(force, mesh.vertices, mesh.stride);
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// indices
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meshState().bindIndicesBufferInternal(mesh.indexBufferObject);
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if (mesh.vertexFlags & kTextureCoord_Attrib) {
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// TODO: support textures
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LOG_ALWAYS_FATAL("textures not yet supported");
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} else {
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meshState().disableTexCoordsVertexArray();
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}
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if (mesh.vertexFlags & kColor_Attrib) {
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LOG_ALWAYS_FATAL("color vertex attribute not yet supported");
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// TODO: enable color, disable when done
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}
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int alphaSlot = -1;
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if (mesh.vertexFlags & kAlpha_Attrib) {
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const void* alphaCoords = ((const GLbyte*) glop.mesh.vertices) + kVertexAlphaOffset;
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alphaSlot = shader.program->getAttrib("vtxAlpha");
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glEnableVertexAttribArray(alphaSlot);
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glVertexAttribPointer(alphaSlot, 1, GL_FLOAT, GL_FALSE, kAlphaVertexStride, alphaCoords);
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}
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// ------------------------------------
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// ---------- GL state setup ----------
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// ------------------------------------
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blend().setFactors(glop.blend.src, glop.blend.dst);
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// ------------------------------------
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// ---------- Actual drawing ----------
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// ------------------------------------
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if (mesh.indexBufferObject == meshState().getQuadListIBO()) {
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// Since the indexed quad list is of limited length, we loop over
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// the glDrawXXX method while updating the vertex pointer
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GLsizei elementsCount = mesh.vertexCount;
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const GLbyte* vertices = static_cast<const GLbyte*>(mesh.vertices);
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while (elementsCount > 0) {
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GLsizei drawCount = MathUtils::min(elementsCount, (GLsizei) kMaxNumberOfQuads * 6);
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// TODO: this double binds on first pass
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meshState().bindPositionVertexPointer(true, vertices, mesh.stride);
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glDrawElements(mesh.primitiveMode, drawCount, GL_UNSIGNED_SHORT, nullptr);
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elementsCount -= drawCount;
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vertices += (drawCount / 6) * 4 * mesh.stride;
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}
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} else if (mesh.indexBufferObject || mesh.indices) {
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glDrawElements(mesh.primitiveMode, mesh.vertexCount, GL_UNSIGNED_SHORT, mesh.indices);
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} else {
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glDrawArrays(mesh.primitiveMode, 0, mesh.vertexCount);
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}
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// -----------------------------------
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// ---------- Mesh teardown ----------
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// -----------------------------------
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if (glop.mesh.vertexFlags & kAlpha_Attrib) {
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glDisableVertexAttribArray(alphaSlot);
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}
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}
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void RenderState::dump() {
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blend().dump();
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meshState().dump();
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scissor().dump();
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stencil().dump();
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}
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} /* namespace uirenderer */
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} /* namespace android */
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