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added sun rendering (unfinished)

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This commit is contained in:
scrawl 2012-02-20 00:52:44 +01:00
parent 705d85e7d1
commit c884f70a61
1 changed files with 29 additions and 0 deletions
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29
apps/openmw/mwrender/sky.cpp
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@ -70,6 +70,35 @@ namespace MWRender
clouds_node->attachObject(clouds_ent);
mCloudMaterial = clouds_ent->getSubEntity(0)->getMaterial();
// Sun
/// \todo calculate the sun position based on time of day
Vector3 sunPosition(0, 0, 1.f);
// this distance has to be set accordingly so that the sun is
// behind the clouds, but still in front of the atmosphere
const float sunDistance = 1000.f;
const float sunScale = 700.f;
Vector3 finalPosition = sunPosition.normalisedCopy() * sunDistance;
// Create a camera-aligned billboard to render the sun
BillboardSet* bbSet = mSceneMgr->createBillboardSet("SkyBillboardSet", 1);
bbSet->setDefaultDimensions(sunScale, sunScale);
bbSet->setRenderQueueGroup(RENDER_QUEUE_SKIES_EARLY);
SceneNode* bbNode = mRootNode->createChildSceneNode();
bbNode->translate(finalPosition);
bbNode->attachObject(bbSet);
bbSet->createBillboard(0,0,0);
MaterialPtr sunMaterial = MaterialManager::getSingleton().create("SunMaterial", ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
sunMaterial->removeAllTechniques();
Pass* p = sunMaterial->createTechnique()->createPass();
p->setSceneBlending(SBT_TRANSPARENT_ALPHA);
p->setDepthWriteEnabled(false);
TextureUnitState* tus = p->createTextureUnitState("textures\\tx_sun_05.dds");
bbSet->setMaterialName("SunMaterial");
// I'm not sure if the materials are being used by any other objects
// Make a unique "modifiable" copy of the materials to be sure
mCloudMaterial = mCloudMaterial->clone("Clouds");