1 files changed, 460 insertions, 0 deletions
diff --git a/indra/newview/llscenemonitor.cpp b/indra/newview/llscenemonitor.cpp
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+++ b/indra/newview/llscenemonitor.cpp
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+/** 
+ * @file llscenemonitor.cpp
+ * @brief monitor the scene loading process.
+ *
+ * $LicenseInfo:firstyear=2003&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+#include "llrendertarget.h"
+#include "llscenemonitor.h"
+#include "llviewerwindow.h"
+#include "llviewerdisplay.h"
+#include "llviewercontrol.h"
+#include "llviewershadermgr.h"
+#include "llui.h"
+#include "llstartup.h"
+#include "llappviewer.h"
+#include "llwindow.h"
+#include "llpointer.h"
+#include "llspatialpartition.h"
+
+LLSceneMonitorView* gSceneMonitorView = NULL;
+
+//
+//The procedures of monitoring when the scene finishes loading visually, 
+//i.e., no pixel differences among frames, are:
+//1, freeze all dynamic objects and avatars;
+//2, (?) disable all sky and water;
+//3, capture frames periodically, by calling "capture()";
+//4, compute pixel differences between two latest captured frames, by calling "compare()", results are stored at mDiff;
+//5, compute the number of pixels in mDiff above some tolerance threshold in GPU, by calling "queryDiff() -> calcDiffAggregate()";
+//6, use gl occlusion query to fetch the result from GPU, by calling "fetchQueryResult()";
+//END.
+//
+
+LLSceneMonitor::LLSceneMonitor() : 
+	mEnabled(FALSE), 
+	mDiff(NULL),
+	mDiffResult(0.f),
+	mDiffTolerance(0.1f),
+	mCurTarget(NULL), 
+	mNeedsUpdateDiff(FALSE),
+	mHasNewDiff(FALSE),
+	mHasNewQueryResult(FALSE),
+	mDebugViewerVisible(FALSE),
+	mQueryObject(0),
+	mSamplingTime(1.0f),
+	mDiffPixelRatio(0.5f)
+{
+	mFrames[0] = NULL;
+	mFrames[1] = NULL;	
+}
+
+LLSceneMonitor::~LLSceneMonitor()
+{
+	destroyClass();
+}
+
+void LLSceneMonitor::destroyClass()
+{
+	reset();
+}
+
+void LLSceneMonitor::reset()
+{
+	delete mFrames[0];
+	delete mFrames[1];
+	delete mDiff;
+
+	mFrames[0] = NULL;
+	mFrames[1] = NULL;
+	mDiff = NULL;
+	mCurTarget = NULL;
+
+	unfreezeScene();
+
+	if(mQueryObject > 0)
+	{
+		release_occlusion_query_object_name(mQueryObject);
+		mQueryObject = 0;
+	}
+}
+
+void LLSceneMonitor::setDebugViewerVisible(BOOL visible) 
+{
+	mDebugViewerVisible = visible;
+}
+
+bool LLSceneMonitor::preCapture()
+{
+	static LLCachedControl<bool> monitor_enabled(gSavedSettings,"SceneLoadingMonitorEnabled");
+	static LLFrameTimer timer;	
+
+	mCurTarget = NULL;
+	if (!LLGLSLShader::sNoFixedFunction)
+	{
+		return false;
+	}
+
+	BOOL enabled = (BOOL)monitor_enabled || mDebugViewerVisible;
+	if(mEnabled != enabled)
+	{
+		if(mEnabled)
+		{
+			reset();
+			unfreezeScene();
+		}
+		else
+		{
+			freezeScene();
+		}
+
+		mEnabled = enabled;
+	}
+
+	if(!mEnabled)
+	{
+		return false;
+	}
+
+	if(timer.getElapsedTimeF32() < mSamplingTime)
+	{
+		return false;
+	}
+	timer.reset();
+	
+	S32 width = gViewerWindow->getWorldViewWidthRaw();
+	S32 height = gViewerWindow->getWorldViewHeightRaw();
+	
+	if(!mFrames[0])
+	{
+		mFrames[0] = new LLRenderTarget();
+		mFrames[0]->allocate(width, height, GL_RGB, false, false, LLTexUnit::TT_TEXTURE, true);
+		gGL.getTexUnit(0)->bind(mFrames[0]);
+		gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
+		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+
+		mCurTarget = mFrames[0];
+	}
+	else if(!mFrames[1])
+	{
+		mFrames[1] = new LLRenderTarget();
+		mFrames[1]->allocate(width, height, GL_RGB, false, false, LLTexUnit::TT_TEXTURE, true);
+		gGL.getTexUnit(0)->bind(mFrames[1]);
+		gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
+		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+
+		mCurTarget = mFrames[1];
+	}
+	else //swap
+	{
+		mCurTarget = mFrames[0];
+		mFrames[0] = mFrames[1];
+		mFrames[1] = mCurTarget;
+	}
+	
+	if(mCurTarget->getWidth() != width || mCurTarget->getHeight() != height) //size changed
+	{
+		mCurTarget->resize(width, height, GL_RGB);
+	}
+
+	return true;
+}
+
+void LLSceneMonitor::freezeAvatar(LLCharacter* avatarp)
+{
+	mAvatarPauseHandles.push_back(avatarp->requestPause());
+}
+
+void LLSceneMonitor::freezeScene()
+{
+	//freeze all avatars
+	for (std::vector<LLCharacter*>::iterator iter = LLCharacter::sInstances.begin();
+		iter != LLCharacter::sInstances.end(); ++iter)
+	{
+		freezeAvatar((LLCharacter*)(*iter));
+	}
+
+	// freeze everything else
+	gSavedSettings.setBOOL("FreezeTime", TRUE);
+}
+
+void LLSceneMonitor::unfreezeScene()
+{
+	//thaw all avatars
+	mAvatarPauseHandles.clear();
+
+	// thaw everything else
+	gSavedSettings.setBOOL("FreezeTime", FALSE);
+}
+
+void LLSceneMonitor::capture()
+{
+	static U32 last_capture_time = 0;
+
+	if(last_capture_time == gFrameCount)
+	{
+		return;
+	}
+	last_capture_time = gFrameCount;
+
+	preCapture();
+
+	if(!mCurTarget)
+	{
+		return;
+	}
+	
+	U32 old_FBO = LLRenderTarget::sCurFBO;
+
+	gGL.getTexUnit(0)->bind(mCurTarget);
+	glBindFramebuffer(GL_READ_FRAMEBUFFER, 0); //point to the main frame buffer.
+		
+	glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, mCurTarget->getWidth(), mCurTarget->getHeight()); //copy the content
+	
+	glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
+	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);		
+	glBindFramebuffer(GL_FRAMEBUFFER, old_FBO);
+
+	mCurTarget = NULL;
+	mNeedsUpdateDiff = TRUE;
+}
+
+bool LLSceneMonitor::needsUpdate() const
+{
+	return mNeedsUpdateDiff;
+}
+
+void LLSceneMonitor::compare()
+{
+	if(!mNeedsUpdateDiff)
+	{
+		return;
+	}
+	mNeedsUpdateDiff = FALSE;
+
+	if(!mFrames[0] || !mFrames[1])
+	{
+		return;
+	}
+	if(mFrames[0]->getWidth() != mFrames[1]->getWidth() || mFrames[0]->getHeight() != mFrames[1]->getHeight())
+	{
+		return; //size does not match
+	}
+
+	S32 width = gViewerWindow->getWindowWidthRaw();
+	S32 height = gViewerWindow->getWindowHeightRaw();
+	if(!mDiff)
+	{
+		mDiff = new LLRenderTarget();
+		mDiff->allocate(width, height, GL_RGBA, false, false, LLTexUnit::TT_TEXTURE, true);
+	}
+	else if(mDiff->getWidth() != width || mDiff->getHeight() != height)
+	{
+		mDiff->resize(width, height, GL_RGBA);
+	}
+
+	mDiff->bindTarget();
+	mDiff->clear();
+	
+	gTwoTextureCompareProgram.bind();
+	
+	gGL.getTexUnit(0)->activate();
+	gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);
+	gGL.getTexUnit(0)->bind(mFrames[0]);
+	gGL.getTexUnit(0)->activate();
+
+	gGL.getTexUnit(1)->activate();
+	gGL.getTexUnit(1)->enable(LLTexUnit::TT_TEXTURE);
+	gGL.getTexUnit(1)->bind(mFrames[1]);
+	gGL.getTexUnit(1)->activate();	
+	
+	gl_rect_2d_simple_tex(width, height);
+	
+	mDiff->flush();	
+
+	gTwoTextureCompareProgram.unbind();
+
+	gGL.getTexUnit(0)->disable();
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+	gGL.getTexUnit(1)->disable();
+	gGL.getTexUnit(1)->unbind(LLTexUnit::TT_TEXTURE);
+
+	mHasNewDiff = TRUE;
+	
+	//send out the query request.
+	queryDiff();
+}
+
+void LLSceneMonitor::queryDiff()
+{
+	if(mDebugViewerVisible)
+	{
+		return;
+	}
+
+	calcDiffAggregate();
+}
+
+//calculate Diff aggregate information in GPU, and enable gl occlusion query to capture it.
+void LLSceneMonitor::calcDiffAggregate()
+{
+	if(!mHasNewDiff && !mDebugViewerVisible)
+	{
+		return;
+	}	
+
+	if(!mQueryObject)
+	{
+		mQueryObject = get_new_occlusion_query_object_name();
+	}
+
+	LLGLDepthTest depth(true, false, GL_ALWAYS);
+	if(!mDebugViewerVisible)
+	{
+		glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+	}
+
+	LLGLSLShader* cur_shader = NULL;
+	
+	cur_shader = LLGLSLShader::sCurBoundShaderPtr;
+	gOneTextureFilterProgram.bind();
+	gOneTextureFilterProgram.uniform1f("tolerance", mDiffTolerance);
+
+	if(mHasNewDiff)
+	{
+		glBeginQueryARB(GL_SAMPLES_PASSED_ARB, mQueryObject);
+	}
+
+	gl_draw_scaled_target(0, 0, S32(mDiff->getWidth() * mDiffPixelRatio), S32(mDiff->getHeight() * mDiffPixelRatio), mDiff);
+
+	if(mHasNewDiff)
+	{
+		glEndQueryARB(GL_SAMPLES_PASSED_ARB);
+		mHasNewDiff = FALSE;	
+		mHasNewQueryResult = TRUE;
+	}
+		
+	gOneTextureFilterProgram.unbind();
+	
+	if(cur_shader != NULL)
+	{
+		cur_shader->bind();
+	}
+	
+	if(!mDebugViewerVisible)
+	{
+		glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+	}	
+}
+
+void LLSceneMonitor::fetchQueryResult()
+{
+	if(!mHasNewQueryResult)
+	{
+		return;
+	}
+	mHasNewQueryResult = FALSE;
+
+	GLuint available = 0;
+	glGetQueryObjectuivARB(mQueryObject, GL_QUERY_RESULT_AVAILABLE_ARB, &available);
+	if(!available)
+	{
+		return;
+	}
+
+	GLuint count = 0;
+	glGetQueryObjectuivARB(mQueryObject, GL_QUERY_RESULT_ARB, &count);
+	
+	mDiffResult = count * 0.5f / (mDiff->getWidth() * mDiff->getHeight() * mDiffPixelRatio * mDiffPixelRatio); //0.5 -> (front face + back face)
+
+	//llinfos << count << " : " << mDiffResult << llendl;
+}
+//-------------------------------------------------------------------------------------------------------------
+//definition of class LLSceneMonitorView
+//-------------------------------------------------------------------------------------------------------------
+LLSceneMonitorView::LLSceneMonitorView(const LLRect& rect)
+	:	LLFloater(LLSD())
+{
+	setRect(rect);
+	setVisible(FALSE);
+	
+	setCanMinimize(false);
+	setCanClose(true);
+}
+
+void LLSceneMonitorView::onClickCloseBtn()
+{
+	setVisible(false);	
+}
+
+void LLSceneMonitorView::setVisible(BOOL visible)
+{
+	LLSceneMonitor::getInstance()->setDebugViewerVisible(visible);
+
+	LLView::setVisible(visible);
+}
+
+void LLSceneMonitorView::draw()
+{
+	const LLRenderTarget* target = LLSceneMonitor::getInstance()->getDiffTarget();
+	if(!target)
+	{
+		return;
+	}
+
+	F32 ratio = LLSceneMonitor::getInstance()->getDiffPixelRatio();
+	S32 height = (S32)(target->getHeight() * ratio);
+	S32 width = (S32)(target->getWidth() * ratio);
+	//S32 height = (S32) (gViewerWindow->getWindowRectScaled().getHeight()*0.5f);
+	//S32 width = (S32) (gViewerWindow->getWindowRectScaled().getWidth() * 0.5f);
+	
+	LLRect new_rect;
+	new_rect.setLeftTopAndSize(getRect().mLeft, getRect().mTop, width, height);
+	setRect(new_rect);
+
+	//draw background
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+	gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, LLColor4(0.f, 0.f, 0.f, 0.25f));
+	
+	LLSceneMonitor::getInstance()->calcDiffAggregate();
+
+	//show some texts
+	LLColor4 color = LLColor4::white;
+	S32 line_height = LLFontGL::getFontMonospace()->getLineHeight();
+
+	S32 lines = 0;
+	std::string num_str = llformat("Frame difference: %.6f", LLSceneMonitor::getInstance()->getDiffResult());
+	LLFontGL::getFontMonospace()->renderUTF8(num_str, 0, 5, getRect().getHeight() - line_height * lines, color, LLFontGL::LEFT, LLFontGL::TOP);
+	lines++;
+
+	num_str = llformat("Pixel tolerance: (R+G+B) < %.4f", LLSceneMonitor::getInstance()->getDiffTolerance());
+	LLFontGL::getFontMonospace()->renderUTF8(num_str, 0, 5, getRect().getHeight() - line_height * lines, color, LLFontGL::LEFT, LLFontGL::TOP);
+	lines++;
+
+	num_str = llformat("Sampling time: %.3f seconds", LLSceneMonitor::getInstance()->getSamplingTime());
+	LLFontGL::getFontMonospace()->renderUTF8(num_str, 0, 5, getRect().getHeight() - line_height * lines, color, LLFontGL::LEFT, LLFontGL::TOP);
+
+	LLView::draw();
+}
+