Second Life viewer sources 1.13.2.12

1 files changed, 446 insertions, 0 deletions

diff --git a/linden/indra/newview/llsky.cpp b/linden/indra/newview/llsky.cpp
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+/** 
+ * @file llsky.cpp
+ * @brief IndraWorld sky class 
+ *
+ * Copyright (c) 2000-2007, Linden Research, Inc.
+ * 
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ */
+
+//      Ideas:
+//              -haze should be controlled by global query from sims
+//              -need secondary optical effects on sun (flare)
+//              -stars should be brought down from sims
+//              -star intensity should be driven by global ambient level from sims,
+//               so that eclipses, etc can be easily done.
+//
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llsky.h"
+
+// linden library includes
+#include "llerror.h"
+#include "llmath.h"
+#include "math.h"
+#include "v4color.h"
+
+#include "llviewerobjectlist.h"
+#include "llviewerobject.h"
+#include "llviewercamera.h"
+#include "pipeline.h"
+#include "llagent.h"
+#include "lldrawpool.h"
+
+#include "llvosky.h"
+#include "llvostars.h"
+#include "llcubemap.h"
+#include "llviewercontrol.h"
+
+extern LLPipeline gPipeline;
+
+F32 azimuth_from_vector(const LLVector3 &v);
+F32 elevation_from_vector(const LLVector3 &v);
+
+// ---------------- LLSky ----------------
+
+//////////////////////////////////////////////////////////////////////
+// Construction/Destruction
+//////////////////////////////////////////////////////////////////////
+
+LLSky::LLSky()
+{
+        // Set initial clear color to black
+        // Set fog color 
+        mFogColor.mV[VRED] = mFogColor.mV[VGREEN] = mFogColor.mV[VBLUE] = 0.5f;
+        mFogColor.mV[VALPHA] = 0.0f;
+
+        mLightingGeneration = 0;
+        mUpdatedThisFrame = TRUE;
+        mOverrideSimSunPosition = FALSE;
+        mSunPhase = 0.f;
+}
+
+
+LLSky::~LLSky()
+{
+}
+
+void LLSky::cleanup()
+{
+        mVOSkyp = NULL;
+        mVOStarsp = NULL;
+        mVOGroundp = NULL;
+}
+
+void LLSky::destroyGL()
+{
+        if (!mVOSkyp.isNull() && mVOSkyp->getCubeMap())
+        {
+                mVOSkyp->cleanupGL();
+        }
+}
+
+void LLSky::restoreGL()
+{
+        if (mVOSkyp)
+        {
+                mVOSkyp->restoreGL();
+        }
+}
+
+void LLSky::setOverrideSun(BOOL override)
+{
+        if (!mOverrideSimSunPosition && override)
+        {
+                mLastSunDirection = getSunDirection();
+        }
+        else if (mOverrideSimSunPosition && !override)
+        {
+                setSunDirection(mLastSunDirection, LLVector3::zero);
+        }
+        mOverrideSimSunPosition = override;
+}
+
+void LLSky::setSunDirection(const LLVector3 &sun_direction, const LLVector3 &sun_ang_velocity)
+{
+        mVOSkyp->setSunDirection(sun_direction, sun_ang_velocity);
+}
+
+
+void LLSky::setSunTargetDirection(const LLVector3 &sun_direction, const LLVector3 &sun_ang_velocity)
+{
+        mSunTargDir = sun_direction;
+}
+
+
+LLVector3 LLSky::getSunDirection() const
+{
+        if (mVOSkyp)
+        {
+                return mVOSkyp->getToSun();
+        }
+        else
+        {
+                return LLVector3::z_axis;
+        }
+}
+
+
+LLVector3 LLSky::getMoonDirection() const
+{
+        if (mVOSkyp)
+        {
+                return mVOSkyp->getToMoon();
+        }
+        else
+        {
+                return LLVector3::z_axis;
+        }
+}
+
+
+LLColor4 LLSky::getSunDiffuseColor() const
+{
+        if (mVOSkyp)
+        {
+                return LLColor4(mVOSkyp->getSunDiffuseColor());
+        }
+        else
+        {
+                return LLColor4(1.f, 1.f, 1.f, 1.f);
+        }
+}
+
+
+LLColor4 LLSky::getMoonDiffuseColor() const
+{
+        if (mVOSkyp)
+        {
+                return LLColor4(mVOSkyp->getMoonDiffuseColor());
+        }
+        else
+        {
+                return LLColor4(1.f, 1.f, 1.f, 1.f);
+        }
+}
+
+
+LLColor4 LLSky::getTotalAmbientColor() const
+{
+        if (mVOSkyp)
+        {
+                return mVOSkyp->getTotalAmbientColor();
+        }
+        else
+        {
+                return LLColor4(1.f, 1.f, 1.f, 1.f);
+        }
+}
+
+
+BOOL LLSky::sunUp() const
+{
+        if (mVOSkyp)
+        {
+                return mVOSkyp->isSunUp();
+        }
+        else
+        {
+                return TRUE;
+        }
+}
+
+
+LLColor4 LLSky::calcInScatter(LLColor4& transp, const LLVector3 &point, F32 exag) const
+{
+        if (mVOSkyp)
+        {
+                return mVOSkyp->calcInScatter(transp, point, exag);
+        }
+        else
+        {
+                return LLColor4(1.f, 1.f, 1.f, 1.f);
+        }
+}
+
+
+LLColor4U LLSky::getFadeColor() const
+{
+        if (mVOSkyp)
+        {
+                return mVOSkyp->getFadeColor();
+        }
+        else
+        {
+                return LLColor4(1.f, 1.f, 1.f, 1.f);
+        }
+}
+
+
+//////////////////////////////////////////////////////////////////////
+// Public Methods
+//////////////////////////////////////////////////////////////////////
+
+
+void LLSky::init(const LLVector3 &sun_direction)
+{
+        mVOSkyp = (LLVOSky *)gObjectList.createObjectViewer(LLViewerObject::LL_VO_SKY, gAgent.getRegion());
+        mVOSkyp->initSunDirection(sun_direction, LLVector3());
+        gPipeline.addObject((LLViewerObject *)mVOSkyp);
+
+        mVOStarsp = (LLVOStars *)gObjectList.createObjectViewer(LLViewerObject::LL_VO_STARS, gAgent.getRegion());
+        gPipeline.addObject((LLViewerObject *)mVOStarsp);
+        
+        mVOGroundp = (LLVOGround*)gObjectList.createObjectViewer(LLViewerObject::LL_VO_GROUND, gAgent.getRegion());
+        LLVOGround *groundp = mVOGroundp;
+        gPipeline.addObject((LLViewerObject *)groundp);
+
+        gSky.setFogRatio(gSavedSettings.getF32("RenderFogRatio"));
+        
+        ////////////////////////////
+        //
+        // Legacy code, ignore
+        //
+        //
+
+        // Get the parameters.
+        mSunDefaultPosition = gSavedSettings.getVector3("SkySunDefaultPosition");
+
+
+        if (gSavedSettings.getBOOL("SkyOverrideSimSunPosition") || mOverrideSimSunPosition)
+        {
+                setSunDirection(mSunDefaultPosition, LLVector3(0.f, 0.f, 0.f));
+        }
+        else
+        {
+                setSunDirection(sun_direction, LLVector3(0.f, 0.f, 0.f));
+        }
+        
+        mUpdatedThisFrame = TRUE;
+}
+
+
+void LLSky::setCloudDensityAtAgent(F32 cloud_density)
+{
+        if (mVOSkyp)
+        {
+                mVOSkyp->setCloudDensity(cloud_density);
+        }
+}
+
+
+void LLSky::setWind(const LLVector3& average_wind)
+{
+        if (mVOSkyp)
+        {
+                mVOSkyp->setWind(average_wind);
+        }
+}
+
+
+void LLSky::propagateHeavenlyBodies(F32 dt)
+{
+        if (!mOverrideSimSunPosition)
+        {
+                LLVector3 curr_dir = getSunDirection();
+                LLVector3 diff = mSunTargDir - curr_dir;
+                const F32 dist = diff.normVec();
+                if (dist > 0)
+                {
+                        const F32 step = llmin (dist, 0.00005f);
+                        //const F32 step = min (dist, 0.0001);
+                        diff *= step;
+                        curr_dir += diff;
+                        curr_dir.normVec();
+                        if (mVOSkyp)
+                        {
+                                mVOSkyp->setSunDirection(curr_dir, LLVector3());
+                        }
+                }
+        }
+}
+
+F32 LLSky::getSunPhase() const
+{
+        return mSunPhase;
+}
+
+void LLSky::setSunPhase(const F32 phase)
+{
+        mSunPhase = phase;
+}
+
+//////////////////////////////////////////////////////////////////////
+// Private Methods
+//////////////////////////////////////////////////////////////////////
+
+
+LLColor4 LLSky::getFogColor() const
+{
+        if (mVOSkyp)
+        {
+                return mVOSkyp->getFogColor();
+        }
+
+        return LLColor4(1.f, 1.f, 1.f, 1.f);
+}
+
+
+void LLSky::updateFog(const F32 distance)
+{
+        if (mVOSkyp)
+        {
+                mVOSkyp->updateFog(distance);
+        }
+}
+
+void LLSky::updateCull()
+{
+        /*if (mVOSkyp.notNull() && mVOSkyp->mDrawable.notNull())
+        {
+                gPipeline.markVisible(mVOSkyp->mDrawable);
+        }
+        else
+        {
+                llinfos << "No sky drawable!" << llendl;
+        }*/
+
+        if (mVOStarsp.notNull() && mVOStarsp->mDrawable.notNull())
+        {
+                gPipeline.markVisible(mVOStarsp->mDrawable);
+        }
+        else
+        {
+                llinfos << "No stars drawable!" << llendl;
+        }
+
+        /*if (mVOGroundp.notNull() && mVOGroundp->mDrawable.notNull())
+        {
+                gPipeline.markVisible(mVOGroundp->mDrawable);
+        }*/
+}
+
+void LLSky::updateSky()
+{
+        if (!gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_SKY))
+        {
+                return;
+        }
+        if (mVOSkyp)
+        {
+                mVOSkyp->updateSky();
+        }
+        if (mVOStarsp)
+        {
+                if (mVOStarsp->mDrawable)
+                {
+                        gPipeline.markRebuild(mVOStarsp->mDrawable, LLDrawable::REBUILD_VOLUME, TRUE);
+                }
+        }
+}
+
+
+void LLSky::setFogRatio(const F32 fog_ratio)
+{
+        if (mVOSkyp)
+        {
+                mVOSkyp->setFogRatio(fog_ratio);
+        }
+}
+
+
+F32 LLSky::getFogRatio() const
+{
+        if (mVOSkyp)
+        {
+                return mVOSkyp->getFogRatio();
+        }
+        else
+        {
+                return 0.f;
+        }
+}
+
+
+// Returns angle (DEGREES) between the horizontal plane and "v", 
+// where the angle is negative when v.mV[VZ] < 0.0f
+F32 elevation_from_vector(const LLVector3 &v)
+{
+        F32 elevation = 0.0f;
+        F32 xy_component = (F32) sqrt(v.mV[VX] * v.mV[VX] + v.mV[VY] * v.mV[VY]);
+        if (xy_component != 0.0f)
+        {
+                elevation = RAD_TO_DEG * (F32) atan(v.mV[VZ]/xy_component);
+        }
+        else
+        {
+                if (v.mV[VZ] > 0.f)
+                {
+                        elevation = 90.f;
+                }
+                else
+                {
+                        elevation = -90.f;
+                }
+        }
+        return elevation;
+}