9e61bb7815
Make the Sk GL context class, SkGLNativeContext, an abstract base class. Before, it depended on ifdefs to implement the platform dependent polymorphism. Move the logic to subclasses of the various platform implementations. This a step to enable Skia embedders to compile dm and bench_pictures. The concrete goal is to support running these test apps with Chromium command buffer. With this change, Chromium can implement its own version of SkGLNativeContext that uses command buffer, and host the implementation in its own repository. Implements the above by renaming the SkGLContextHelper to SkGLContext and removing the unneeded SkGLNativeContext. Also removes SkGLNativeContext::AutoRestoreContext functionality, it appeared to be unused: no use in Skia code, and no tests. BUG=skia:2992 Committed: https://skia.googlesource.com/skia/+/a90ed4e83897b45d6331ee4c54e1edd4054de9a8 Review URL: https://codereview.chromium.org/630843002
78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
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/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "GpuTimer.h"
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#include "gl/SkGLContext.h"
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#include "gl/GrGLUtil.h"
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GpuTimer::GpuTimer(const SkGLContext* glctx) : fContext(glctx) {
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if (fContext) {
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fContext->ref();
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fContext->makeCurrent();
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fStarted = false;
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fSupported = GrGLGetVersion(fContext->gl()) > GR_GL_VER(3,3) ||
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fContext->hasExtension("GL_ARB_timer_query") ||
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fContext->hasExtension("GL_EXT_timer_query");
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if (fSupported) {
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SK_GL(*fContext, GenQueries(1, &fQuery));
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}
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}
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}
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GpuTimer::~GpuTimer() {
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if (fContext) {
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if (fSupported) {
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fContext->makeCurrent();
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SK_GL(*fContext, DeleteQueries(1, &fQuery));
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}
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fContext->unref();
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}
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}
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void GpuTimer::start() {
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if (fContext && fSupported) {
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fContext->makeCurrent();
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fStarted = true;
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SK_GL(*fContext, BeginQuery(GR_GL_TIME_ELAPSED, fQuery));
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}
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}
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/**
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* It is important to stop the cpu clocks first,
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* as this will cpu wait for the gpu to finish.
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*/
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double GpuTimer::end() {
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if (fContext && fSupported) {
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fStarted = false;
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fContext->makeCurrent();
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SK_GL(*fContext, EndQuery(GR_GL_TIME_ELAPSED));
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GrGLint available = 0;
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while (!available) {
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SK_GL_NOERRCHECK(*fContext, GetQueryObjectiv(fQuery,
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GR_GL_QUERY_RESULT_AVAILABLE,
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&available));
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// If GetQueryObjectiv is erroring out we need some alternative
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// means of breaking out of this loop
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GrGLenum error;
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SK_GL_RET_NOERRCHECK(*fContext, error, GetError());
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if (GR_GL_NO_ERROR != error) {
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break;
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}
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}
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GrGLuint64 totalGPUTimeElapsed = 0;
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SK_GL(*fContext, GetQueryObjectui64v(fQuery,
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GR_GL_QUERY_RESULT,
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&totalGPUTimeElapsed));
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return totalGPUTimeElapsed / 1000000.0;
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} else {
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return 0;
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}
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}
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