llfasttimerview.cpp

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#include "llviewerprecompiledheaders.h"

#include "indra_constants.h"
#include "llfasttimerview.h"
#include "llviewerwindow.h"
#include "llrect.h"
#include "llerror.h"
#include "llgl.h"
#include "llglimmediate.h"
#include "llmath.h"
#include "llfontgl.h"

#include "llappviewer.h"
#include "llviewerimagelist.h"
#include "llui.h"
#include "llviewercontrol.h"
#include "llstat.h"

#include "llfasttimer.h"


static const S32 MAX_VISIBLE_HISTORY = 10;
static const S32 LINE_GRAPH_HEIGHT = 240;

struct ft_display_info {
        int timer;
        const char *desc;
        const LLColor4 *color;
        S32 disabled; // initialized to 0
        int level; // calculated based on desc
        int parent; // calculated
};

static const LLColor4 red0(0.5f, 0.0f, 0.0f, 1.0f);
static const LLColor4 green0(0.0f, 0.5f, 0.0f, 1.0f);
static const LLColor4 blue0(0.0f, 0.0f, 0.5f, 1.0f);
static const LLColor4 blue7(0.0f, 0.0f, 0.5f, 1.0f);

static const LLColor4 green7(0.6f, 1.0f, 0.4f, 1.0f);
static const LLColor4 green8(0.4f, 1.0f, 0.6f, 1.0f);
static const LLColor4 green9(0.6f, 1.0f, 0.6f, 1.0f);

// green(6), blue, yellow, orange, pink(2), cyan
// red (5) magenta (4)
static struct ft_display_info ft_display_table[] =
{
        { LLFastTimer::FTM_FRAME,                               "Frame",                                &LLColor4::white, 0 },
        { LLFastTimer::FTM_MESSAGES,                    " System Messages",             &LLColor4::grey1, 1 },
        { LLFastTimer::FTM_MOUSEHANDLER,                "  Mouse",                              &LLColor4::grey1, 0 },
        { LLFastTimer::FTM_KEYHANDLER,                  "  Keyboard",                   &LLColor4::grey1, 0 },
        { LLFastTimer::FTM_SLEEP,                               " Sleep",                               &LLColor4::grey2, 0 },
        { LLFastTimer::FTM_IDLE,                                " Idle",                                &blue0, 0 },
        { LLFastTimer::FTM_PUMP,                                "  Pump",                               &LLColor4::magenta2, 1 },
        { LLFastTimer::FTM_CURL,                                "   Curl",                              &LLColor4::magenta3, 0 },
        { LLFastTimer::FTM_INVENTORY,                   "  Inventory Update",   &LLColor4::purple6, 1 },
        { LLFastTimer::FTM_AUTO_SELECT,                 "   Open and Select",   &LLColor4::red, 0 },
        { LLFastTimer::FTM_FILTER,                              "   Filter",                    &LLColor4::red2, 0 },
        { LLFastTimer::FTM_ARRANGE,                             "   Arrange",                   &LLColor4::red3, 0 },
        { LLFastTimer::FTM_REFRESH,                             "   Refresh",                   &LLColor4::red4, 0 },
        { LLFastTimer::FTM_SORT,                                "   Sort",                              &LLColor4::red5, 0 },
        { LLFastTimer::FTM_RESET_DRAWORDER,             "  ResetDrawOrder",             &LLColor4::pink1, 0 },
        { LLFastTimer::FTM_WORLD_UPDATE,                "  World Update",               &LLColor4::blue1, 1 },
        { LLFastTimer::FTM_UPDATE_MOVE,                 "   Move Objects",              &LLColor4::pink2, 0 },
        { LLFastTimer::FTM_OCTREE_BALANCE,              "    Octree Balance", &LLColor4::red3, 0 },
        { LLFastTimer::FTM_SIMULATE_PARTICLES,  "   Particle Sim",      &LLColor4::blue4, 0 },
        { LLFastTimer::FTM_OBJECTLIST_UPDATE,   "  Object Update",      &LLColor4::purple1, 1 },
        { LLFastTimer::FTM_AVATAR_UPDATE,               "   Avatars",           &LLColor4::purple2, 0 },
        { LLFastTimer::FTM_JOINT_UPDATE,                "    Joints",           &LLColor4::purple3, 0 },
        { LLFastTimer::FTM_ATTACHMENT_UPDATE,   "    Attachments",      &LLColor4::purple4, 0 },
        { LLFastTimer::FTM_UPDATE_ANIMATION,    "     Animation",       &LLColor4::purple5, 0 },
        { LLFastTimer::FTM_FLEXIBLE_UPDATE,             "   Flex Update",       &LLColor4::pink2, 0 },
        { LLFastTimer::FTM_LOD_UPDATE,                  "   LOD Update",        &LLColor4::magenta1, 0 },
        { LLFastTimer::FTM_REGION_UPDATE,               "  Region Update",      &LLColor4::cyan2, 0 },
        { LLFastTimer::FTM_NETWORK,                             "  Network",            &LLColor4::orange1, 1 },
        { LLFastTimer::FTM_IDLE_NETWORK,                "   Decode Msgs",       &LLColor4::orange2, 0 },
        { LLFastTimer::FTM_PROCESS_MESSAGES,    "    Process Msgs", &LLColor4::orange3, 0 },
        { LLFastTimer::FTM_PROCESS_OBJECTS,             "     Object Updates",&LLColor4::orange4, 0 },
        { LLFastTimer::FTM_CREATE_OBJECT,               "      Create Obj",      &LLColor4::orange5, 0 },
//      { LLFastTimer::FTM_LOAD_AVATAR,                 "       Load Avatar", &LLColor4::pink2, 0 },
        { LLFastTimer::FTM_PROCESS_IMAGES,              "     Image Updates",&LLColor4::orange6, 0 },
        { LLFastTimer::FTM_PIPELINE,                    "     Pipeline",        &LLColor4::magenta4, 0 },
        { LLFastTimer::FTM_CLEANUP,                             "  Cleanup",            &LLColor4::cyan3, 0 },
        { LLFastTimer::FTM_AUDIO_UPDATE,                "  Audio Update",       &LLColor4::yellow3, 0 },
        { LLFastTimer::FTM_VFILE_WAIT,                  "  VFile Wait",         &LLColor4::cyan6, 0 },
//      { LLFastTimer::FTM_IDLE_CB,                             "  Callbacks",          &LLColor4::pink1, 0 },
        { LLFastTimer::FTM_RENDER,                              " Render",                      &green0, 1 },
        { LLFastTimer::FTM_HUD_EFFECTS,                 "  HUD Effects",        &LLColor4::orange1, 0 },
        { LLFastTimer::FTM_HUD_UPDATE,                  "  HUD Update", &LLColor4::orange2, 0 },
        { LLFastTimer::FTM_UPDATE_SKY,                  "  Sky Update",         &LLColor4::cyan1, 0 },
        { LLFastTimer::FTM_UPDATE_TEXTURES,             "  Textures",           &LLColor4::pink2, 0 },
        { LLFastTimer::FTM_GEO_UPDATE,                  "  Geo Update", &LLColor4::blue3, 1 },
        { LLFastTimer::FTM_UPDATE_PRIMITIVES,   "   Volumes",           &LLColor4::blue4, 0 },
        { LLFastTimer::FTM_GEN_VOLUME,                  "    Gen Volume",       &LLColor4::yellow3, 0 },
        { LLFastTimer::FTM_GEN_FLEX,                    "    Flexible", &LLColor4::yellow4, 0 },
        { LLFastTimer::FTM_GEN_TRIANGLES,               "    Triangles",        &LLColor4::yellow5, 0 },
        { LLFastTimer::FTM_UPDATE_AVATAR,               "   Avatar",            &LLColor4::yellow1, 0 },
        { LLFastTimer::FTM_UPDATE_TREE,                 "   Tree",                      &LLColor4::yellow2, 0 },
        { LLFastTimer::FTM_UPDATE_TERRAIN,              "   Terrain",           &LLColor4::yellow6, 0 },
        { LLFastTimer::FTM_UPDATE_CLOUDS,               "   Clouds",            &LLColor4::yellow7, 0 },
        { LLFastTimer::FTM_UPDATE_GRASS,                "   Grass",             &LLColor4::yellow8, 0 },
        { LLFastTimer::FTM_UPDATE_WATER,                "   Water",             &LLColor4::yellow9, 0 },
        { LLFastTimer::FTM_GEO_LIGHT,                   "   Lighting",          &LLColor4::yellow1, 0 },
        { LLFastTimer::FTM_GEO_SHADOW,                  "   Shadow",            &LLColor4::black, 0 },
        { LLFastTimer::FTM_UPDATE_PARTICLES,    "   Particles", &LLColor4::blue5, 0 },
        { LLFastTimer::FTM_GEO_RESERVE,                 "   Reserve",           &LLColor4::blue6, 0 },
        { LLFastTimer::FTM_UPDATE_LIGHTS,               "   Lights",            &LLColor4::yellow2, 0 },
        { LLFastTimer::FTM_GEO_SKY,                             "   Sky",                       &LLColor4::yellow3, 0 },
        { LLFastTimer::FTM_UPDATE_WLPARAM,              "  Windlight Param",&LLColor4::magenta2, 0 },
        { LLFastTimer::FTM_CULL,                                "  Object Cull",        &LLColor4::blue2, 1 },
    { LLFastTimer::FTM_CULL_REBOUND,            "   Rebound",           &LLColor4::blue3, 0 },
        { LLFastTimer::FTM_FRUSTUM_CULL,                "   Frustum Cull",      &LLColor4::blue4, 0 },
        { LLFastTimer::FTM_OCCLUSION_READBACK,  "   Occlusion Read", &LLColor4::red2, 0 },
        { LLFastTimer::FTM_IMAGE_UPDATE,                "  Image Update",       &LLColor4::yellow4, 1 },
        { LLFastTimer::FTM_IMAGE_CREATE,                "   Image CreateGL",&LLColor4::yellow5, 0 },
        { LLFastTimer::FTM_IMAGE_DECODE,                "   Image Decode",      &LLColor4::yellow6, 0 },
        { LLFastTimer::FTM_IMAGE_MARK_DIRTY,    "   Dirty Textures",&LLColor4::red1, 0 },
        { LLFastTimer::FTM_STATESORT,                   "  State Sort", &LLColor4::orange1, 1 },
        { LLFastTimer::FTM_STATESORT_DRAWABLE,  "   Drawable",          &LLColor4::orange2, 0 },
        { LLFastTimer::FTM_STATESORT_POSTSORT,  "   Post Sort", &LLColor4::orange3, 0 },
        { LLFastTimer::FTM_REBUILD_OCCLUSION_VB,"    Occlusion",                &LLColor4::cyan5, 0 },
        { LLFastTimer::FTM_REBUILD_VBO,                 "    VBO Rebuild",      &LLColor4::red4, 0 },
        { LLFastTimer::FTM_REBUILD_VOLUME_VB,   "     Volume",          &LLColor4::blue1, 0 },
//      { LLFastTimer::FTM_REBUILD_NONE_VB,             "      Unknown",        &LLColor4::cyan5, 0 },
//      { LLFastTimer::FTM_REBUILD_BRIDGE_VB,   "     Bridge",          &LLColor4::blue2, 0 },
//      { LLFastTimer::FTM_REBUILD_HUD_VB,              "     HUD",                     &LLColor4::blue3, 0 },
        { LLFastTimer::FTM_REBUILD_TERRAIN_VB,  "     Terrain",         &LLColor4::blue4, 0 },
//      { LLFastTimer::FTM_REBUILD_WATER_VB,    "     Water",           &LLColor4::blue5, 0 },
//      { LLFastTimer::FTM_REBUILD_TREE_VB,             "     Tree",            &LLColor4::cyan1, 0 },
        { LLFastTimer::FTM_REBUILD_PARTICLE_VB, "     Particle",        &LLColor4::cyan2, 0 },
//      { LLFastTimer::FTM_REBUILD_CLOUD_VB,    "     Cloud",           &LLColor4::cyan3, 0 },
//      { LLFastTimer::FTM_REBUILD_GRASS_VB,    "     Grass",           &LLColor4::cyan4, 0 },
        { LLFastTimer::FTM_RENDER_GEOMETRY,             "  Geometry",           &LLColor4::green2, 1 },
        { LLFastTimer::FTM_POOLS,                               "   Pools",                     &LLColor4::green3, 1 },
        { LLFastTimer::FTM_POOLRENDER,                  "    RenderPool",       &LLColor4::green4, 1 },
        { LLFastTimer::FTM_RENDER_TERRAIN,              "     Terrain",         &LLColor4::green6, 0 },
        { LLFastTimer::FTM_RENDER_CHARACTERS,   "     Avatars",         &LLColor4::yellow1, 0 },
        { LLFastTimer::FTM_RENDER_SIMPLE,               "     Simple",          &LLColor4::yellow2, 0 },
        { LLFastTimer::FTM_RENDER_FULLBRIGHT,   "     Fullbright",      &LLColor4::yellow5, 0 },
        { LLFastTimer::FTM_RENDER_GLOW,                 "     Glow",            &LLColor4::orange1, 0 },
        { LLFastTimer::FTM_RENDER_GRASS,                "     Grass",           &LLColor4::yellow6, 0 },
        { LLFastTimer::FTM_RENDER_INVISIBLE,    "     Invisible",       &LLColor4::red2, 0 },
        { LLFastTimer::FTM_RENDER_SHINY,                "     Shiny",           &LLColor4::yellow3, 0 },
        { LLFastTimer::FTM_RENDER_BUMP,                 "     Bump",            &LLColor4::yellow4, 0 },
        { LLFastTimer::FTM_RENDER_TREES,                "     Trees",           &LLColor4::yellow8, 0 },
        { LLFastTimer::FTM_RENDER_OCCLUSION,    "     Occlusion",       &LLColor4::red1, 0 },
        { LLFastTimer::FTM_RENDER_CLOUDS,               "     Clouds",          &LLColor4::yellow5, 0 },
        { LLFastTimer::FTM_RENDER_ALPHA,                "     Alpha",           &LLColor4::yellow6, 0 },
        { LLFastTimer::FTM_RENDER_HUD,                  "     HUD",                     &LLColor4::yellow7, 0 },
        { LLFastTimer::FTM_RENDER_WATER,                "     Water",           &LLColor4::yellow9, 0 },
        { LLFastTimer::FTM_RENDER_WL_SKY,               "     WL Sky",          &LLColor4::blue3,       0 },
        { LLFastTimer::FTM_RENDER_FAKE_VBO_UPDATE,"     Fake VBO update",               &LLColor4::red2,        0 },
        { LLFastTimer::FTM_RENDER_BLOOM,                "   Bloom",                     &LLColor4::blue4, 0 },
        { LLFastTimer::FTM_RENDER_BLOOM_FBO,            "    First FBO",                        &LLColor4::blue, 0 },
        { LLFastTimer::FTM_RENDER_UI,                   "  UI",                         &LLColor4::cyan4, 1 },
        { LLFastTimer::FTM_RENDER_TIMER,                "   Timers",            &LLColor4::cyan5, 1, 0 },
        { LLFastTimer::FTM_RENDER_FONTS,                "   Fonts",                     &LLColor4::pink1, 0 },
        { LLFastTimer::FTM_SWAP,                                "  Swap",                       &LLColor4::pink2, 0 },
        { LLFastTimer::FTM_CLIENT_COPY,                 "  Client Copy",        &LLColor4::red1, 1},

#if 0 || !LL_RELEASE_FOR_DOWNLOAD
        { LLFastTimer::FTM_TEMP1,                               " Temp1",                       &LLColor4::red1, 0 },
        { LLFastTimer::FTM_TEMP2,                               " Temp2",                       &LLColor4::magenta1, 0 },
        { LLFastTimer::FTM_TEMP3,                               " Temp3",                       &LLColor4::red2, 0 },
        { LLFastTimer::FTM_TEMP4,                               " Temp4",                       &LLColor4::magenta2, 0 },
        { LLFastTimer::FTM_TEMP5,                               " Temp5",                       &LLColor4::red3, 0 },
        { LLFastTimer::FTM_TEMP6,                               " Temp6",                       &LLColor4::magenta3, 0 },
        { LLFastTimer::FTM_TEMP7,                               " Temp7",                       &LLColor4::red4, 0 },
        { LLFastTimer::FTM_TEMP8,                               " Temp8",                       &LLColor4::magenta4, 0 },
#endif
        
        { LLFastTimer::FTM_OTHER,                               " Other",                       &red0 }
};
static int ft_display_didcalc = 0;
static const int FTV_DISPLAY_NUM  = (sizeof(ft_display_table)/sizeof(ft_display_table[0]));

S32 ft_display_idx[FTV_DISPLAY_NUM]; // line of table entry for display purposes (for collapse)

LLFastTimerView::LLFastTimerView(const std::string& name, const LLRect& rect)
        :       LLFloater(name, rect, "Fast Timers")
{
        setVisible(FALSE);
        mDisplayMode = 0;
        mAvgCountTotal = 0;
        mMaxCountTotal = 0;
        mDisplayCenter = 1;
        mDisplayCalls = 0;
        mDisplayHz = 0;
        mScrollIndex = 0;
        mHoverIndex = -1;
        mHoverBarIndex = -1;
        mBarStart = new S32[(MAX_VISIBLE_HISTORY + 1) * FTV_DISPLAY_NUM];
        memset(mBarStart, 0, (MAX_VISIBLE_HISTORY + 1) * FTV_DISPLAY_NUM * sizeof(S32));
        mBarEnd = new S32[(MAX_VISIBLE_HISTORY + 1) * FTV_DISPLAY_NUM];
        memset(mBarEnd, 0, (MAX_VISIBLE_HISTORY + 1) * FTV_DISPLAY_NUM * sizeof(S32));
        mSubtractHidden = 0;
        mPrintStats = -1;       

        // One-time setup
        if (!ft_display_didcalc)
        {
                int pidx[FTV_DISPLAY_NUM];
                int pdisabled[FTV_DISPLAY_NUM];
                for (S32 i=0; i < FTV_DISPLAY_NUM; i++)
                {
                        int level = 0;
                        const char *text = ft_display_table[i].desc;
                        while(text[0] == ' ')
                        {
                                text++;
                                level++;
                        }
                        llassert(level < FTV_DISPLAY_NUM);
                        ft_display_table[i].desc = text;
                        ft_display_table[i].level = level;
                        if (level > 0)
                        {
                                ft_display_table[i].parent = pidx[level-1];
                                if (pdisabled[level-1])
                                {
                                        ft_display_table[i].disabled = 3;
                                }
                        }
                        else
                        {
                                ft_display_table[i].parent = -1;
                        }
                        ft_display_idx[i] = i;
                        pidx[level] = i;
                        pdisabled[level] = ft_display_table[i].disabled;
                }
                ft_display_didcalc = 1;
        }
}

LLFastTimerView::~LLFastTimerView()
{
        delete[] mBarStart;
        delete[] mBarEnd;
}

BOOL LLFastTimerView::handleRightMouseDown(S32 x, S32 y, MASK mask)
{
        if (mBarRect.pointInRect(x, y))
        {
                S32 bar_idx = MAX_VISIBLE_HISTORY - ((y - mBarRect.mBottom) * (MAX_VISIBLE_HISTORY + 2) / mBarRect.getHeight());
                bar_idx = llclamp(bar_idx, 0, MAX_VISIBLE_HISTORY);
                mPrintStats = bar_idx;
//              return TRUE; // for now, pass all mouse events through
        }
        return FALSE;
}

S32 LLFastTimerView::getLegendIndex(S32 y)
{
        S32 idx = (getRect().getHeight() - y) / ((S32) LLFontGL::sMonospace->getLineHeight()+2) - 5;
        if (idx >= 0 && idx < FTV_DISPLAY_NUM)
        {
                return ft_display_idx[idx];
        }
        
        return -1;
}

BOOL LLFastTimerView::handleMouseDown(S32 x, S32 y, MASK mask)
{
        if (x < mBarRect.mLeft) 
        {
                S32 legend_index = getLegendIndex(y);
                if (legend_index >= 0 && legend_index < FTV_DISPLAY_NUM)
                {
                        S32 disabled = ft_display_table[legend_index].disabled;
                        if (++disabled > 2)
                                disabled = 0;
                        ft_display_table[legend_index].disabled = disabled;
                        S32 level = ft_display_table[legend_index].level;

                        // propagate enable/disable to all children
                        legend_index++;
                        while (legend_index < FTV_DISPLAY_NUM && ft_display_table[legend_index].level > level)
                        {
                                ft_display_table[legend_index].disabled = disabled ? 3 : 0;
                                legend_index++;
                        }
                }
        }
        else if (mask & MASK_ALT)
        {
                if (mask & MASK_SHIFT)
                {
                        mSubtractHidden = !mSubtractHidden;
                }
                else if (mask & MASK_CONTROL)
                {
                        mDisplayHz = !mDisplayHz;       
                }
                else
                {
                        mDisplayCalls = !mDisplayCalls;
                }
        }
        else if (mask & MASK_SHIFT)
        {
                if (++mDisplayMode > 3)
                        mDisplayMode = 0;
        }
        else if (mask & MASK_CONTROL)
        {
                if (++mDisplayCenter > 2)
                        mDisplayCenter = 0;
        }
        else
        {
                // pause/unpause
                LLFastTimer::sPauseHistory = !LLFastTimer::sPauseHistory;
                // reset scroll to bottom when unpausing
                if (!LLFastTimer::sPauseHistory)
                {
                        mScrollIndex = 0;
                }
        }
        // SJB: Don't pass mouse clicks through the display
        return TRUE;
}

BOOL LLFastTimerView::handleMouseUp(S32 x, S32 y, MASK mask)
{
        return FALSE;
}


BOOL LLFastTimerView::handleHover(S32 x, S32 y, MASK mask)
{
        if(LLFastTimer::sPauseHistory && mBarRect.pointInRect(x, y))
        {
                mHoverIndex = -1;
                mHoverBarIndex = MAX_VISIBLE_HISTORY - ((y - mBarRect.mBottom) * (MAX_VISIBLE_HISTORY + 2) / mBarRect.getHeight());
                if (mHoverBarIndex == 0)
                {
                        return TRUE;
                }
                else if (mHoverBarIndex == -1)
                {
                        mHoverBarIndex = 0;
                }
                for (S32 i = 0; i < FTV_DISPLAY_NUM; i++)
                {
                        if (x > mBarStart[mHoverBarIndex * FTV_DISPLAY_NUM + i] &&
                                x < mBarEnd[mHoverBarIndex * FTV_DISPLAY_NUM + i] &&
                                ft_display_table[i].disabled <= 1)
                        {
                                mHoverIndex = i;
                        }
                }
        }
        else if (x < mBarRect.mLeft) 
        {
                S32 legend_index = getLegendIndex(y);
                if (legend_index >= 0 && legend_index < FTV_DISPLAY_NUM)
                {
                        mHoverIndex = legend_index;
                }
        }
        
        return FALSE;
}

BOOL LLFastTimerView::handleScrollWheel(S32 x, S32 y, S32 clicks)
{
        LLFastTimer::sPauseHistory = TRUE;
        mScrollIndex = llclamp(mScrollIndex - clicks, 
                                                        0, llmin(LLFastTimer::sLastFrameIndex, (S32)LLFastTimer::FTM_HISTORY_NUM-MAX_VISIBLE_HISTORY));
        return TRUE;
}

void LLFastTimerView::draw()
{
        LLFastTimer t(LLFastTimer::FTM_RENDER_TIMER);
        
        std::string tdesc;

        F64 clock_freq = (F64)LLFastTimer::countsPerSecond();
        F64 iclock_freq = 1000.0 / clock_freq;
        
        S32 margin = 10;
        S32 height = (S32) (gViewerWindow->getVirtualWindowRect().getHeight()*0.75f);
        S32 width = (S32) (gViewerWindow->getVirtualWindowRect().getWidth() * 0.75f);
        
        // HACK: casting away const. Should use setRect or some helper function instead.
                const_cast<LLRect&>(getRect()).setLeftTopAndSize(getRect().mLeft, getRect().mTop, width, height);

        S32 left, top, right, bottom;
        S32 x, y, barw, barh, dx, dy;
        S32 texth, textw;
        LLPointer<LLUIImage> box_imagep = LLUI::getUIImage("rounded_square.tga");

        // Make sure all timers are accounted for
        // Set 'FTM_OTHER' to unaccounted ticks last frame
        {
                S32 display_timer[LLFastTimer::FTM_NUM_TYPES];
                S32 hidx = LLFastTimer::sLastFrameIndex % LLFastTimer::FTM_HISTORY_NUM;
                for (S32 i=0; i < LLFastTimer::FTM_NUM_TYPES; i++)
                {
                        display_timer[i] = 0;
                }
                for (S32 i=0; i < FTV_DISPLAY_NUM; i++)
                {
                        S32 tidx = ft_display_table[i].timer;
                        display_timer[tidx] = 1;
                }
                LLFastTimer::sCountHistory[hidx][LLFastTimer::FTM_OTHER] = 0;
                LLFastTimer::sCallHistory[hidx][LLFastTimer::FTM_OTHER] = 0;
                for (S32 tidx = 0; tidx < LLFastTimer::FTM_NUM_TYPES; tidx++)
                {
                        U64 counts = LLFastTimer::sCountHistory[hidx][tidx];
                        if (counts > 0 && display_timer[tidx] == 0)
                        {
                                LLFastTimer::sCountHistory[hidx][LLFastTimer::FTM_OTHER] += counts;
                                LLFastTimer::sCallHistory[hidx][LLFastTimer::FTM_OTHER] += 1;
                        }
                }
                LLFastTimer::sCountAverage[LLFastTimer::FTM_OTHER] = 0;
                LLFastTimer::sCallAverage[LLFastTimer::FTM_OTHER] = 0;
                for (S32 h = 0; h < LLFastTimer::FTM_HISTORY_NUM; h++)
                {
                        LLFastTimer::sCountAverage[LLFastTimer::FTM_OTHER] += LLFastTimer::sCountHistory[h][LLFastTimer::FTM_OTHER];
                        LLFastTimer::sCallAverage[LLFastTimer::FTM_OTHER] += LLFastTimer::sCallHistory[h][LLFastTimer::FTM_OTHER];
                }
                LLFastTimer::sCountAverage[LLFastTimer::FTM_OTHER] /= LLFastTimer::FTM_HISTORY_NUM;
                LLFastTimer::sCallAverage[LLFastTimer::FTM_OTHER] /= LLFastTimer::FTM_HISTORY_NUM;
        }
        
        // Draw the window background
        {
                LLGLSNoTexture gls_ui_no_texture;
                gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, LLColor4(0.f, 0.f, 0.f, 0.25f));
        }
        
        S32 xleft = margin;
        S32 ytop = margin;
        
        // Draw some help
        {
                
                x = xleft;
                y = height - ytop;
                texth = (S32)LLFontGL::sMonospace->getLineHeight();

                char modedesc[][32] = {
                        "2 x Average ",
                        "Max         ",
                        "Recent Max  ",
                        "100 ms      "
                };
                char centerdesc[][32] = {
                        "Left      ",
                        "Centered  ",
                        "Ordered   "
                };

                tdesc = llformat("Full bar = %s [Click to pause/reset] [SHIFT-Click to toggle]",modedesc[mDisplayMode]);
                LLFontGL::sMonospace->renderUTF8(tdesc, 0, x, y, LLColor4::white, LLFontGL::LEFT, LLFontGL::TOP);

                textw = LLFontGL::sMonospace->getWidth(tdesc);

                x = xleft, y -= (texth + 2);
                tdesc = llformat("Justification = %s [CTRL-Click to toggle]",centerdesc[mDisplayCenter]);
                LLFontGL::sMonospace->renderUTF8(tdesc, 0, x, y, LLColor4::white, LLFontGL::LEFT, LLFontGL::TOP);
                y -= (texth + 2);

                LLFontGL::sMonospace->renderUTF8("[Right-Click log selected] [ALT-Click toggle counts] [ALT-SHIFT-Click sub hidden]",
                                                                                 0, x, y, LLColor4::white, LLFontGL::LEFT, LLFontGL::TOP);
                y -= (texth + 2);
        }

        // Calc the total ticks
        S32 histmax = llmin(LLFastTimer::sLastFrameIndex+1, MAX_VISIBLE_HISTORY);
        U64 ticks_sum[LLFastTimer::FTM_HISTORY_NUM+1][FTV_DISPLAY_NUM];
        for (S32 j=-1; j<LLFastTimer::FTM_HISTORY_NUM; j++)
        {
                S32 hidx;
                if (j >= 0)
                        hidx = (LLFastTimer::sLastFrameIndex+j) % LLFastTimer::FTM_HISTORY_NUM;
                else
                        hidx = -1;

                // calculate tick info by adding child ticks to parents
                for (S32 i=0; i < FTV_DISPLAY_NUM; i++)
                {
                        if (mSubtractHidden && ft_display_table[i].disabled > 1)
                        {
                                continue;
                        }
                        // Get ticks
                        S32 tidx = ft_display_table[i].timer;
                        if (hidx >= 0)
                                 ticks_sum[j+1][i] = LLFastTimer::sCountHistory[hidx][tidx];
                        else
                                 ticks_sum[j+1][i] = LLFastTimer::sCountAverage[tidx];
                        S32 pidx = ft_display_table[i].parent;
                        // Add ticks to parents
                        while (pidx >= 0)
                        {
                                ticks_sum[j+1][pidx] += ticks_sum[j+1][i];
                                pidx = ft_display_table[pidx].parent;
                        }
                }
        }
                
        // Draw the legend

        S32 legendwidth = 0;
        xleft = margin;
        ytop = y;

        y -= (texth + 2);

        S32 cur_line = 0;
        S32 display_line[FTV_DISPLAY_NUM];
        for (S32 i=0; i<FTV_DISPLAY_NUM; i++)
        {
                S32 disabled = ft_display_table[i].disabled;
                if (disabled == 3)
                {
                        continue; // skip row
                }
                display_line[i] = cur_line;
                ft_display_idx[cur_line] = i;
                cur_line++;
                S32 level = ft_display_table[i].level;
                S32 parent = ft_display_table[i].parent;
                
                x = xleft;

                left = x; right = x + texth;
                top = y; bottom = y - texth;
                S32 scale_offset = 0;
                if (i == mHoverIndex)
                {
                        scale_offset = llfloor(sinf(mHighlightTimer.getElapsedTimeF32() * 6.f) * 2.f);
                }
                gl_rect_2d(left - scale_offset, top + scale_offset, right + scale_offset, bottom - scale_offset, *ft_display_table[i].color);

                int tidx = ft_display_table[i].timer;
                F32 ms = 0;
                S32 calls = 0;
                if (mHoverBarIndex > 0 && mHoverIndex >= 0)
                {
                        S32 hidx = (LLFastTimer::sLastFrameIndex + (mHoverBarIndex - 1) - mScrollIndex) % LLFastTimer::FTM_HISTORY_NUM;
                        S32 bidx = LLFastTimer::FTM_HISTORY_NUM - mScrollIndex - mHoverBarIndex;
                        U64 ticks = ticks_sum[bidx+1][i]; // : LLFastTimer::sCountHistory[hidx][tidx];
                        ms = (F32)((F64)ticks * iclock_freq);
                        calls = (S32)LLFastTimer::sCallHistory[hidx][tidx];
                }
                else
                {
                        U64 ticks = ticks_sum[0][i];
                        ms = (F32)((F64)ticks * iclock_freq);
                        calls = (S32)LLFastTimer::sCallAverage[tidx];
                }
                if (mDisplayCalls)
                {
                        tdesc = llformat("%s (%d)",ft_display_table[i].desc,calls);
                }
                else
                {
                        tdesc = llformat("%s [%.1f]",ft_display_table[i].desc,ms);
                }
                dx = (texth+4) + level*8;

                LLColor4 color = disabled > 1 ? LLColor4::grey : LLColor4::white;
                if (level > 0)
                {
                        S32 line_start_y = (top + bottom) / 2;
                        S32 line_end_y = line_start_y + ((texth + 2) * (display_line[i] - display_line[parent])) - (texth / 2);
                        gl_line_2d(x + dx - 8, line_start_y, x + dx, line_start_y, color);
                        S32 line_x = x + (texth + 4) + ((level - 1) * 8);
                        gl_line_2d(line_x, line_start_y, line_x, line_end_y, color);
                        if (disabled == 1)
                        {
                                gl_line_2d(line_x+4, line_start_y-3, line_x+4, line_start_y+4, color);
                        }
                }

                x += dx;
                BOOL is_child_of_hover_item = (i == mHoverIndex);
                S32 next_parent = ft_display_table[i].parent;
                while(!is_child_of_hover_item && next_parent >= 0)
                {
                        is_child_of_hover_item = (mHoverIndex == next_parent);
                        next_parent = ft_display_table[next_parent].parent;
                }

                if (is_child_of_hover_item)
                {
                        LLFontGL::sMonospace->renderUTF8(tdesc, 0, x, y, color, LLFontGL::LEFT, LLFontGL::TOP, LLFontGL::BOLD);
                }
                else
                {
                        LLFontGL::sMonospace->renderUTF8(tdesc, 0, x, y, color, LLFontGL::LEFT, LLFontGL::TOP);
                }
                y -= (texth + 2);

                textw = dx + LLFontGL::sMonospace->getWidth(ft_display_table[i].desc) + 40;
                if (textw > legendwidth)
                        legendwidth = textw;
        }
        for (S32 i=cur_line; i<FTV_DISPLAY_NUM; i++)
        {
                ft_display_idx[i] = -1;
        }
        xleft += legendwidth + 8;
        // ytop = ytop;

        // update rectangle that includes timer bars
        mBarRect.mLeft = xleft;
        mBarRect.mRight = getRect().mRight - xleft;
        mBarRect.mTop = ytop - ((S32)LLFontGL::sMonospace->getLineHeight() + 4);
        mBarRect.mBottom = margin + LINE_GRAPH_HEIGHT;

        y = ytop;
        barh = (ytop - margin - LINE_GRAPH_HEIGHT) / (MAX_VISIBLE_HISTORY + 2);
        dy = barh>>2; // spacing between bars
        if (dy < 1) dy = 1;
        barh -= dy;
        barw = width - xleft - margin;

        // Draw the history bars
        if (LLFastTimer::sLastFrameIndex >= 0)
        {       
                U64 totalticks;
                if (!LLFastTimer::sPauseHistory)
                {
                        U64 ticks = 0;
                        int hidx = (LLFastTimer::sLastFrameIndex - mScrollIndex) % LLFastTimer::FTM_HISTORY_NUM;
                        for (S32 i=0; i<FTV_DISPLAY_NUM; i++)
                        {
                                if (mSubtractHidden && ft_display_table[i].disabled > 1)
                                {
                                        continue;
                                }
                                int tidx = ft_display_table[i].timer;
                                ticks += LLFastTimer::sCountHistory[hidx][tidx];
                        }
                        if (LLFastTimer::sCurFrameIndex >= 10)
                        {
                                U64 framec = LLFastTimer::sCurFrameIndex;
                                U64 avg = (U64)mAvgCountTotal;
                                mAvgCountTotal = (avg*framec + ticks) / (framec + 1);
                                if (ticks > mMaxCountTotal)
                                {
                                        mMaxCountTotal = ticks;
                                }
                        }
#if 1
                        if (ticks < mAvgCountTotal/100 || ticks > mAvgCountTotal*100)
                                LLFastTimer::sResetHistory = 1;
#endif
                        if (LLFastTimer::sCurFrameIndex < 10 || LLFastTimer::sResetHistory)
                        {
                                mAvgCountTotal = ticks;
                                mMaxCountTotal = ticks;
                        }
                }

                if (mDisplayMode == 0)
                {
                        totalticks = mAvgCountTotal*2;
                }
                else if (mDisplayMode == 1)
                {
                        totalticks = mMaxCountTotal;
                }
                else if (mDisplayMode == 2)
                {
                        // Calculate the max total ticks for the current history
                        totalticks = 0;
                        for (S32 j=0; j<histmax; j++)
                        {
                                U64 ticks = 0;
                                for (S32 i=0; i<FTV_DISPLAY_NUM; i++)
                                {
                                        if (mSubtractHidden && ft_display_table[i].disabled > 1)
                                        {
                                                continue;
                                        }
                                        int tidx = ft_display_table[i].timer;
                                        ticks += LLFastTimer::sCountHistory[j][tidx];
                                }
                                if (ticks > totalticks)
                                        totalticks = ticks;
                        }
                }
                else
                {
                        totalticks = (U64)(clock_freq * .1); // 100 ms
                }
                
                // Draw MS ticks
                {
                        U32 ms = (U32)((F64)totalticks * iclock_freq) ;

                        tdesc = llformat("%.1f ms |", (F32)ms*.25f);
                        x = xleft + barw/4 - LLFontGL::sMonospace->getWidth(tdesc);
                        LLFontGL::sMonospace->renderUTF8(tdesc, 0, x, y, LLColor4::white,
                                                                                 LLFontGL::LEFT, LLFontGL::TOP);
                        
                        tdesc = llformat("%.1f ms |", (F32)ms*.50f);
                        x = xleft + barw/2 - LLFontGL::sMonospace->getWidth(tdesc);
                        LLFontGL::sMonospace->renderUTF8(tdesc, 0, x, y, LLColor4::white,
                                                                                 LLFontGL::LEFT, LLFontGL::TOP);
                        
                        tdesc = llformat("%.1f ms |", (F32)ms*.75f);
                        x = xleft + (barw*3)/4 - LLFontGL::sMonospace->getWidth(tdesc);
                        LLFontGL::sMonospace->renderUTF8(tdesc, 0, x, y, LLColor4::white,
                                                                                 LLFontGL::LEFT, LLFontGL::TOP);
                        
                        tdesc = llformat( "%d ms |", ms);
                        x = xleft + barw - LLFontGL::sMonospace->getWidth(tdesc);
                        LLFontGL::sMonospace->renderUTF8(tdesc, 0, x, y, LLColor4::white,
                                                                                 LLFontGL::LEFT, LLFontGL::TOP);
                }

                LLRect graph_rect;
                // Draw borders
                {
                        LLGLSNoTexture gls_ui_no_texture;
                        gGL.color4f(0.5f,0.5f,0.5f,0.5f);

                        S32 by = y + 2;
                        
                        y -= ((S32)LLFontGL::sMonospace->getLineHeight() + 4);

                        //heading
                        gl_rect_2d(xleft-5, by, getRect().getWidth()-5, y+5, FALSE);

                        //tree view
                        gl_rect_2d(5, by, xleft-10, 5, FALSE);

                        by = y + 5;
                        //average bar
                        gl_rect_2d(xleft-5, by, getRect().getWidth()-5, by-barh-dy-5, FALSE);
                        
                        by -= barh*2+dy;
                        
                        //current frame bar
                        gl_rect_2d(xleft-5, by, getRect().getWidth()-5, by-barh-dy-2, FALSE);
                        
                        by -= barh+dy+1;
                        
                        //history bars
                        gl_rect_2d(xleft-5, by, getRect().getWidth()-5, LINE_GRAPH_HEIGHT-barh-dy-2, FALSE);                    
                        
                        by = LINE_GRAPH_HEIGHT-barh-dy-7;
                        
                        //line graph
                        graph_rect = LLRect(xleft-5, by, getRect().getWidth()-5, 5);
                        
                        gl_rect_2d(graph_rect, FALSE);
                }
                
                // Draw bars for each history entry
                // Special: -1 = show running average
                LLViewerImage::bindTexture(box_imagep->getImage());
                for (S32 j=-1; j<histmax && y > LINE_GRAPH_HEIGHT; j++)
                {
                        int sublevel_dx[FTV_DISPLAY_NUM+1];
                        int sublevel_left[FTV_DISPLAY_NUM+1];
                        int sublevel_right[FTV_DISPLAY_NUM+1];
                        S32 tidx;
                        if (j >= 0)
                        {
                                tidx = LLFastTimer::FTM_HISTORY_NUM - j - 1 - mScrollIndex;
                        }
                        else
                        {
                                tidx = -1;
                        }
                        
                        x = xleft;
                        
                        // draw the bars for each stat
                        int xpos[FTV_DISPLAY_NUM+1];
                        int deltax[FTV_DISPLAY_NUM+1];
                        xpos[0] = xleft;

                        for (S32 i = 0; i < FTV_DISPLAY_NUM; i++)
                        {
                                if (ft_display_table[i].disabled > 1)
                                {
                                        continue;
                                }

                                F32 frac = (F32)ticks_sum[tidx+1][i] / (F32)totalticks;
                
                                dx = llround(frac * (F32)barw);
                                deltax[i] = dx;
                                
                                int level = ft_display_table[i].level;
                                int parent = ft_display_table[i].parent;
                                llassert(level < FTV_DISPLAY_NUM);
                                llassert(parent < FTV_DISPLAY_NUM);
                                
                                left = xpos[level];
                                
                                S32 prev_idx = i - 1;
                                while (prev_idx > 0)
                                {
                                        if (ft_display_table[prev_idx].disabled <= 1)
                                        {
                                                break;
                                        }
                                        prev_idx--;
                                }
                                S32 next_idx = i + 1;
                                while (next_idx < FTV_DISPLAY_NUM)
                                {
                                        if (ft_display_table[next_idx].disabled <= 1)
                                        {
                                                break;
                                        }
                                        next_idx++;
                                }

                                if (level == 0)
                                                {
                                        sublevel_left[level] = xleft;
                                        sublevel_dx[level] = dx;
                                        sublevel_right[level] = sublevel_left[level] + sublevel_dx[level];
                                        }
                                else if (i==0 || ft_display_table[prev_idx].level < level)
                                {
                                        // If we are the first entry at a new sublevel block, calc the
                                        //   total width of this sublevel and modify left to align block.
                                                U64 sublevelticks = ticks_sum[tidx+1][i];
                                                for (S32 k=i+1; k<FTV_DISPLAY_NUM; k++)
                                                {
                                                        if (ft_display_table[k].level < level)
                                                                break;
                                                        if (ft_display_table[k].disabled <= 1 && ft_display_table[k].level == level)
                                                                sublevelticks += ticks_sum[tidx+1][k];
                                                }
                                                F32 subfrac = (F32)sublevelticks / (F32)totalticks;
                                        sublevel_dx[level] = (int)(subfrac * (F32)barw + .5f);

                                        if (mDisplayCenter == 1) // center aligned
                                        {
                                                left += (deltax[parent] - sublevel_dx[level])/2;
                                        }
                                        else if (mDisplayCenter == 2) // right aligned
                                        {
                                                left += (deltax[parent] - sublevel_dx[level]);
                                }

                                        sublevel_left[level] = left;
                                        sublevel_right[level] = sublevel_left[level] + sublevel_dx[level];
                                }                               

                                right = left + dx;
                                xpos[level] = right;
                                xpos[level+1] = left;
                                
                                mBarStart[(j + 1) * FTV_DISPLAY_NUM + i] = left;
                                mBarEnd[(j + 1) * FTV_DISPLAY_NUM + i] = right;

                                top = y;
                                bottom = y - barh;

                                if (right > left)
                                {
                                        //U32 rounded_edges = 0;
                                        LLColor4 color = *ft_display_table[i].color;
                                        S32 scale_offset = 0;

                                        BOOL is_child_of_hover_item = (i == mHoverIndex);
                                        S32 next_parent = ft_display_table[i].parent;
                                        while(!is_child_of_hover_item && next_parent >= 0)
                                        {
                                                is_child_of_hover_item = (mHoverIndex == next_parent);
                                                next_parent = ft_display_table[next_parent].parent;
                                        }

                                        if (i == mHoverIndex)
                                        {
                                                scale_offset = llfloor(sinf(mHighlightTimer.getElapsedTimeF32() * 6.f) * 3.f);
                                                //color = lerp(color, LLColor4::black, -0.4f);
                                        }
                                        else if (mHoverIndex >= 0 && !is_child_of_hover_item)
                                        {
                                                color = lerp(color, LLColor4::grey, 0.8f);
                                        }

                                        gGL.color4fv(color.mV);
                                        F32 start_fragment = llclamp((F32)(left - sublevel_left[level]) / (F32)sublevel_dx[level], 0.f, 1.f);
                                        F32 end_fragment = llclamp((F32)(right - sublevel_left[level]) / (F32)sublevel_dx[level], 0.f, 1.f);
                                        gl_segmented_rect_2d_fragment_tex(sublevel_left[level], top - level + scale_offset, sublevel_right[level], bottom + level - scale_offset, box_imagep->getTextureWidth(), box_imagep->getTextureHeight(), 16, start_fragment, end_fragment);

                                }
                                        
                        }
                        y -= (barh + dy);
                        if (j < 0)
                                y -= barh;
                }
                
                //draw line graph history
                {
                        LLGLSNoTexture no_texture;
                        LLLocalClipRect clip(graph_rect);
                        
                        //normalize based on last frame's maximum
                        static U64 last_max = 0;
                        static F32 alpha_interp = 0.f;
                        U64 max_ticks = llmax(last_max, (U64) 1);                       
                        F32 ms = (F32)((F64)max_ticks * iclock_freq);
                        
                        //display y-axis range
                        LLString tdesc = mDisplayCalls ? 
                                                        llformat("%d calls", max_ticks) :
                                                        mDisplayHz ?
                                                        llformat("%d Hz", max_ticks) :
                                                        llformat("%4.2f ms", ms);
                                                        
                        x = graph_rect.mRight - LLFontGL::sMonospace->getWidth(tdesc)-5;
                        y = graph_rect.mTop - ((S32)LLFontGL::sMonospace->getLineHeight());
 
                        LLFontGL::sMonospace->renderUTF8(tdesc, 0, x, y, LLColor4::white,
                                                                                 LLFontGL::LEFT, LLFontGL::TOP);

                        //highlight visible range
                        {
                                S32 first_frame = LLFastTimer::FTM_HISTORY_NUM - mScrollIndex;
                                S32 last_frame = first_frame - MAX_VISIBLE_HISTORY;
                                
                                F32 frame_delta = ((F32) (graph_rect.getWidth()))/(LLFastTimer::FTM_HISTORY_NUM-1);
                                
                                F32 right = (F32) graph_rect.mLeft + frame_delta*first_frame;
                                F32 left = (F32) graph_rect.mLeft + frame_delta*last_frame;
                                
                                gGL.color4f(0.5f,0.5f,0.5f,0.3f);
                                gl_rect_2d((S32) left, graph_rect.mTop, (S32) right, graph_rect.mBottom);
                                
                                if (mHoverBarIndex >= 0)
                                {
                                        S32 bar_frame = first_frame - mHoverBarIndex;
                                        F32 bar = (F32) graph_rect.mLeft + frame_delta*bar_frame;

                                        gGL.color4f(0.5f,0.5f,0.5f,1);
                                
                                        gGL.begin(LLVertexBuffer::LINES);
                                        gGL.vertex2i((S32)bar, graph_rect.mBottom);
                                        gGL.vertex2i((S32)bar, graph_rect.mTop);
                                        gGL.end();
                                }
                        }
                        
                        U64 cur_max = 0;
                        for (S32 idx = 0; idx < FTV_DISPLAY_NUM; ++idx)
                        {
                                if (ft_display_table[idx].disabled > 1)
                                {       //skip disabled timers
                                        continue;
                                }
                                
                                //fatten highlighted timer
                                if (mHoverIndex == idx)
                                {
                                        gGL.flush();
                                        glLineWidth(3);
                                }
                        
                                const F32 * col = ft_display_table[idx].color->mV;
                                
                                F32 alpha = 1.f;
                                
                                if (mHoverIndex >= 0 &&
                                        idx != mHoverIndex)
                                {       //fade out non-hihglighted timers
                                        if (ft_display_table[idx].parent != mHoverIndex)
                                        {
                                                alpha = alpha_interp;
                                        }
                                }

                                gGL.color4f(col[0], col[1], col[2], alpha);                             
                                gGL.begin(LLVertexBuffer::LINE_STRIP);
                                for (U32 j = 0; j < LLFastTimer::FTM_HISTORY_NUM; j++)
                                {
                                        U64 ticks = ticks_sum[j+1][idx];

                                        if (mDisplayHz)
                                        {
                                                F64 tc = (F64) (ticks+1) * iclock_freq;
                                                tc = 1000.f/tc;
                                                ticks = llmin((U64) tc, (U64) 1024);
                                        }
                                        else if (mDisplayCalls)
                                        {
                                                S32 tidx = ft_display_table[idx].timer;
                                                S32 hidx = (LLFastTimer::sLastFrameIndex + j) % LLFastTimer::FTM_HISTORY_NUM;
                                                ticks = (S32)LLFastTimer::sCallHistory[hidx][tidx];
                                        }
                                                                                
                                        if (alpha == 1.f)
                                        { //normalize to highlighted timer
                                                cur_max = llmax(cur_max, ticks);
                                        }
                                        F32 x = graph_rect.mLeft + ((F32) (graph_rect.getWidth()))/(LLFastTimer::FTM_HISTORY_NUM-1)*j;
                                        F32 y = graph_rect.mBottom + (F32) graph_rect.getHeight()/max_ticks*ticks;
                                        gGL.vertex2f(x,y);
                                }
                                gGL.end();
                                
                                if (mHoverIndex == idx)
                                {
                                        gGL.flush();
                                        glLineWidth(1);
                                }
                        }
                        
                        //interpolate towards new maximum
                        F32 dt = gFrameIntervalSeconds*3.f;
                        last_max = (U64) ((F32) last_max + ((F32) cur_max- (F32) last_max) * dt);
                        F32 alpha_target = last_max > cur_max ?
                                                                llmin((F32) last_max/ (F32) cur_max - 1.f,1.f) :
                                                                llmin((F32) cur_max/ (F32) last_max - 1.f,1.f);
                        
                        alpha_interp = alpha_interp + (alpha_target-alpha_interp) * dt;

                        if (mHoverIndex >= 0)
                        {
                                x = (graph_rect.mRight + graph_rect.mLeft)/2;
                                y = graph_rect.mBottom + 8;

                                LLFontGL::sMonospace->renderUTF8(ft_display_table[mHoverIndex].desc, 0, x, y, LLColor4::white,
                                        LLFontGL::LEFT, LLFontGL::BOTTOM);
                        }                                       
                }
        }

        // Output stats for clicked bar to log
        if (mPrintStats >= 0)
        {
                LLString legend_stat;
                S32 stat_num;
                S32 first = 1;
                for (stat_num = 0; stat_num < FTV_DISPLAY_NUM; stat_num++)
                {
                        if (ft_display_table[stat_num].disabled > 1)
                                continue;
                        if (!first)
                                legend_stat += ", ";
                        first=0;
                        legend_stat += ft_display_table[stat_num].desc;
                }
                llinfos << legend_stat << llendl;

                LLString timer_stat;
                first = 1;
                for (stat_num = 0; stat_num < FTV_DISPLAY_NUM; stat_num++)
                {
                        S32 disabled = ft_display_table[stat_num].disabled;
                        if (disabled > 1)
                                continue;
                        if (!first)
                                timer_stat += ", ";
                        first=0;
                        U64 ticks;
                        S32 tidx = ft_display_table[stat_num].timer;
                        if (mPrintStats > 0)
                        {
                                S32 hidx = (LLFastTimer::sLastFrameIndex+(mPrintStats-1)-mScrollIndex) % LLFastTimer::FTM_HISTORY_NUM;
                                ticks = disabled >= 1 ? ticks_sum[mPrintStats][stat_num] : LLFastTimer::sCountHistory[hidx][tidx];
                        }
                        else
                        {
                                ticks = disabled >= 1 ? ticks_sum[0][stat_num] : LLFastTimer::sCountAverage[tidx];
                        }
                        F32 ms = (F32)((F64)ticks * iclock_freq);

                        timer_stat += llformat("%.1f",ms);
                }
                llinfos << timer_stat << llendl;
                mPrintStats = -1;
        }
                
        mHoverIndex = -1;
        mHoverBarIndex = -1;

        LLView::draw();
}

F64 LLFastTimerView::getTime(LLFastTimer::EFastTimerType tidx)
{
        // Find table index
        S32 i;
        for (i=0; i<FTV_DISPLAY_NUM; i++)
        {
                if (tidx == ft_display_table[i].timer)
                {
                        break;
                }
        }

        if (i == FTV_DISPLAY_NUM)
        {
                // walked off the end of ft_display_table without finding
                // the desired timer type
                llwarns << "Timer type " << tidx << " not known." << llendl;
                return F64(0.0);
        }

        S32 table_idx = i;
        
        // Add child ticks to parent
        U64 ticks = LLFastTimer::sCountAverage[tidx];
        S32 level = ft_display_table[table_idx].level;
        for (i=table_idx+1; i<FTV_DISPLAY_NUM; i++)
        {
                if (ft_display_table[i].level <= level)
                {
                        break;
                }
                ticks += LLFastTimer::sCountAverage[ft_display_table[i].timer];
        }

        return (F64)ticks / (F64)LLFastTimer::countsPerSecond();
}

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