126 lines
3.5 KiB
C++
126 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ContextStateTracker.h"
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#include "GLContext.h"
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namespace mozilla {
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void
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ContextStateTrackerOGL::PushOGLSection(GLContext* aGL, const char* aSectionName)
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{
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if (!profiler_feature_active("gpu")) {
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return;
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}
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if (!aGL->IsSupported(gl::GLFeature::query_objects)) {
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return;
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}
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if (mSectionStack.Length() > 0) {
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// We need to end the query since we're starting a new section and restore it
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// when this section is finished.
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aGL->fEndQuery(LOCAL_GL_TIME_ELAPSED);
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Top().mCpuTimeEnd = TimeStamp::Now();
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}
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ContextState newSection(aSectionName);
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GLuint queryObject;
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aGL->fGenQueries(1, &queryObject);
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newSection.mStartQueryHandle = queryObject;
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newSection.mCpuTimeStart = TimeStamp::Now();
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aGL->fBeginQuery(LOCAL_GL_TIME_ELAPSED_EXT, queryObject);
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mSectionStack.AppendElement(newSection);
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}
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void
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ContextStateTrackerOGL::PopOGLSection(GLContext* aGL, const char* aSectionName)
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{
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// We might have ignored a section start if we started profiling
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// in the middle section. If so we will ignore this unmatched end.
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if (mSectionStack.Length() == 0) {
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return;
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}
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int i = mSectionStack.Length() - 1;
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MOZ_ASSERT(strcmp(mSectionStack[i].mSectionName, aSectionName) == 0);
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aGL->fEndQuery(LOCAL_GL_TIME_ELAPSED);
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mSectionStack[i].mCpuTimeEnd = TimeStamp::Now();
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mCompletedSections.AppendElement(mSectionStack[i]);
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mSectionStack.RemoveElementAt(i);
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if (i - 1 >= 0) {
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const char* sectionToRestore = Top().mSectionName;
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// We need to restore the outer section
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// Well do this by completing this section and adding a new
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// one with the same name
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mCompletedSections.AppendElement(Top());
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mSectionStack.RemoveElementAt(i - 1);
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ContextState newSection(sectionToRestore);
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GLuint queryObject;
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aGL->fGenQueries(1, &queryObject);
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newSection.mStartQueryHandle = queryObject;
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newSection.mCpuTimeStart = TimeStamp::Now();
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aGL->fBeginQuery(LOCAL_GL_TIME_ELAPSED_EXT, queryObject);
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mSectionStack.AppendElement(newSection);
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}
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Flush(aGL);
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}
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void
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ContextStateTrackerOGL::Flush(GLContext* aGL)
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{
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TimeStamp now = TimeStamp::Now();
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while (mCompletedSections.Length() != 0) {
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// On mac we see QUERY_RESULT_AVAILABLE cause a GL flush if we query it
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// too early. For profiling we rather have the last 200ms of data missing
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// while causing let's measurement distortions.
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if (mCompletedSections[0].mCpuTimeEnd + TimeDuration::FromMilliseconds(200) > now) {
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break;
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}
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GLuint handle = mCompletedSections[0].mStartQueryHandle;
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// We've waiting 200ms, content rendering at > 20 FPS will be ready. We
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// shouldn't see any flushes now.
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GLuint returned = 0;
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aGL->fGetQueryObjectuiv(handle, LOCAL_GL_QUERY_RESULT_AVAILABLE, &returned);
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if (!returned) {
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break;
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}
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GLuint gpuTime = 0;
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aGL->fGetQueryObjectuiv(handle, LOCAL_GL_QUERY_RESULT, &gpuTime);
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aGL->fDeleteQueries(1, &handle);
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mCompletedSections.RemoveElementAt(0);
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}
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}
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void
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ContextStateTrackerOGL::DestroyOGL(GLContext* aGL)
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{
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while (mCompletedSections.Length() != 0) {
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GLuint handle = (GLuint)mCompletedSections[0].mStartQueryHandle;
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aGL->fDeleteQueries(1, &handle);
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mCompletedSections.RemoveElementAt(0);
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}
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}
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} // namespace mozilla
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