bool DecalManager::prepRenderImage(SceneState* state, const U32 stateKey,
const U32 /*startZone*/, const bool /*modifyBaseState*/)
{
PROFILE_SCOPE( DecalManager_RenderDecals );
if ( !smDecalsOn || !mData )
return false;
if (isLastState(state, stateKey))
return false;
setLastState(state, stateKey);
if ( !state->isDiffusePass() && !state->isReflectPass() )
return false;
PROFILE_START( DecalManager_RenderDecals_SphereTreeCull );
// Grab this before anything here changes it.
mCuller = state->getFrustum();
// Populate vector of decal instances to be rendered with all
// decals from visible decal spheres.
mDecalQueue.clear();
const Vector<DecalSphere*> &grid = mData->getGrid();
for ( U32 i = 0; i < grid.size(); i++ )
{
const DecalSphere *decalSphere = grid[i];
const SphereF &worldSphere = decalSphere->mWorldSphere;
if ( !mCuller.sphereInFrustum( worldSphere.center, worldSphere.radius ) )
continue;
// TODO: If each sphere stored its largest decal instance we
// could do an LOD step on it here and skip adding any of the
// decals in the sphere.
mDecalQueue.merge( decalSphere->mItems );
}
PROFILE_END();
PROFILE_START( DecalManager_RenderDecals_Update );
const U32 &curSimTime = Sim::getCurrentTime();
const Point2I &viewportExtent = state->getViewportExtent();
Point3F cameraOffset;
F32 decalSize,
pixelRadius;
U32 delta, diff;
DecalInstance *dinst;
// Loop through DecalQueue once for preRendering work.
// 1. Update DecalInstance fade (over time)
// 2. Clip geometry if flagged to do so.
// 3. Calculate lod - if decal is far enough away it will not render.
for ( U32 i = 0; i < mDecalQueue.size(); i++ )
{
dinst = mDecalQueue[i];
// LOD calculation.
// See TSShapeInstance::setDetailFromDistance for more
// information on these calculations.
decalSize = getMax( dinst->mSize, 0.001f );
pixelRadius = dinst->calcPixelRadius( state );
// Need to clamp here.
if ( pixelRadius < dinst->calcEndPixRadius( viewportExtent ) )
{
mDecalQueue.erase_fast( i );
i--;
continue;
}
// We're gonna try to render this decal... so do any
// final adjustments to it before rendering.
// Update fade and delete expired.
if ( !( dinst->mFlags & PermanentDecal || dinst->mFlags & CustomDecal ) )
{
delta = ( curSimTime - dinst->mCreateTime );
if ( delta > dinst->mDataBlock->lifeSpan )
{
diff = delta - dinst->mDataBlock->lifeSpan;
dinst->mVisibility = 1.0f - (F32)diff / (F32)dinst->mDataBlock->fadeTime;
if ( dinst->mVisibility <= 0.0f )
{
mDecalQueue.erase_fast( i );
removeDecal( dinst );
i--;
continue;
}
}
}
// Build clipped geometry for this decal if needed.
if ( dinst->mFlags & ClipDecal/* && !( dinst->mFlags & CustomDecal ) */)
{
// Turn off the flag so we don't continually try to clip
// if it fails.
if(!clipDecal( dinst ))
{
dinst->mFlags = dinst->mFlags & ~ClipDecal;
if ( !(dinst->mFlags & CustomDecal) )
{
// Clipping failed to get any geometry...
// Remove it from the render queue.
mDecalQueue.erase_fast( i );
i--;
// If the decal is one placed at run-time (not the editor)
// then we should also permanently delete the decal instance.
if ( !(dinst->mFlags & SaveDecal) )
{
removeDecal( dinst );
}
}
// If this is a decal placed by the editor it will be
// flagged to attempt clipping again the next time it is
// modified. For now we just skip rendering it.
continue;
}
}
// If we get here and the decal still does not have any geometry
// skip rendering it. It must be an editor placed decal that failed
// to clip any geometry but has not yet been flagged to try again.
if ( !dinst->mVerts || dinst->mVertCount == 0 || dinst->mIndxCount == 0 )
{
mDecalQueue.erase_fast( i );
i--;
continue;
}
//
F32 alpha = pixelRadius / (dinst->mDataBlock->startPixRadius * decalSize) - 1.0f;
if ( dinst->mFlags & CustomDecal )
{
alpha = mClampF( alpha, 0.0f, 1.0f );
alpha *= dinst->mVisibility;
}
else
alpha = mClampF( alpha * dinst->mVisibility, 0.0f, 1.0f );
//
for ( U32 v = 0; v < dinst->mVertCount; v++ )
dinst->mVerts[v].color.set( 255, 255, 255, alpha * 255.0f );
}
PROFILE_END();
if ( mDecalQueue.empty() )
return false;
// Sort queued decals...
// 1. Editor decals - in render priority order first, creation time second, and material third.
// 2. Dynamic decals - in render priority order first and creation time second.
//
// With the constraint that decals with different render priority cannot
// be rendered together in the same draw call.
PROFILE_START( DecalManager_RenderDecals_Sort );
dQsort( mDecalQueue.address(), mDecalQueue.size(), sizeof(DecalInstance*), cmpDecalRenderOrder );
PROFILE_END();
PROFILE_SCOPE( DecalManager_RenderDecals_RenderBatch );
mPrimBuffs.clear();
mVBs.clear();
RenderPassManager *renderPass = state->getRenderPass();
// Base render instance for convenience we use for convenience.
// Data shared by all instances we allocate below can be copied
// from the base instance at the same time.
MeshRenderInst baseRenderInst;
baseRenderInst.clear();
MatrixF *tempMat = renderPass->allocUniqueXform( MatrixF( true ) );
MathUtils::getZBiasProjectionMatrix( gDecalBias, mCuller, tempMat );
baseRenderInst.projection = tempMat;
baseRenderInst.objectToWorld = &MatrixF::Identity;
baseRenderInst.worldToCamera = renderPass->allocSharedXform(RenderPassManager::View);
baseRenderInst.type = RenderPassManager::RIT_Decal;
// Make it the sort distance the max distance so that
// it renders after all the other opaque geometry in
// the prepass bin.
baseRenderInst.sortDistSq = F32_MAX;
// Get the best lights for the current camera position.
LightManager *lm = state->getLightManager();
if ( lm )
{
lm->setupLights( NULL,
mCuller.getPosition(),
mCuller.getTransform().getForwardVector(),
mCuller.getFarDist() );
lm->getBestLights( baseRenderInst.lights, 4 );
lm->resetLights();
}
Vector<DecalBatch> batches;
DecalBatch *currentBatch = NULL;
// Loop through DecalQueue collecting them into render batches.
for ( U32 i = 0; i < mDecalQueue.size(); i++ )
{
DecalInstance *decal = mDecalQueue[i];
DecalData *data = decal->mDataBlock;
Material *mat = data->getMaterial();
if ( currentBatch == NULL )
{
// Start a new batch, beginning with this decal.
batches.increment();
currentBatch = &batches.last();
currentBatch->startDecal = i;
currentBatch->decalCount = 1;
currentBatch->iCount = decal->mIndxCount;
currentBatch->vCount = decal->mVertCount;
currentBatch->mat = mat;
currentBatch->matInst = decal->mDataBlock->getMaterialInstance();
currentBatch->priority = decal->getRenderPriority();
currentBatch->dynamic = !(decal->mFlags & SaveDecal);
continue;
}
if ( currentBatch->iCount + decal->mIndxCount >= smMaxIndices ||
currentBatch->vCount + decal->mVertCount >= smMaxVerts ||
currentBatch->mat != mat ||
currentBatch->priority != decal->getRenderPriority() ||
decal->mCustomTex )
{
// End batch.
currentBatch = NULL;
i--;
continue;
}
// Add on to current batch.
currentBatch->decalCount++;
currentBatch->iCount += decal->mIndxCount;
currentBatch->vCount += decal->mVertCount;
}
// Loop through batches allocating buffers and submitting render instances.
for ( U32 i = 0; i < batches.size(); i++ )
{
DecalBatch ¤tBatch = batches[i];
// Allocate buffers...
GFXVertexBufferHandle<DecalVertex> vb;
vb.set( GFX, currentBatch.vCount, GFXBufferTypeDynamic );
DecalVertex *vpPtr = vb.lock();
GFXPrimitiveBufferHandle pb;
pb.set( GFX, currentBatch.iCount, 0, GFXBufferTypeDynamic );
U16 *pbPtr;
pb.lock( &pbPtr );
// Copy data into the buffers from all decals in this batch...
U32 lastDecal = currentBatch.startDecal + currentBatch.decalCount;
U32 voffset = 0;
U32 ioffset = 0;
// This is an ugly hack for ProjectedShadow!
GFXTextureObject *customTex = NULL;
for ( U32 j = currentBatch.startDecal; j < lastDecal; j++ )
{
DecalInstance *dinst = mDecalQueue[j];
for ( U32 k = 0; k < dinst->mIndxCount; k++ )
{
*( pbPtr + ioffset + k ) = dinst->mIndices[k] + voffset;
}
ioffset += dinst->mIndxCount;
dMemcpy( vpPtr + voffset, dinst->mVerts, sizeof( DecalVertex ) * dinst->mVertCount );
voffset += dinst->mVertCount;
// Ugly hack for ProjectedShadow!
if ( (dinst->mFlags & CustomDecal) && dinst->mCustomTex != NULL )
customTex = *dinst->mCustomTex;
}
AssertFatal( ioffset == currentBatch.iCount, "bad" );
AssertFatal( voffset == currentBatch.vCount, "bad" );
pb.unlock();
vb.unlock();
// DecalManager must hold handles to these buffers so they remain valid,
// we don't actually use them elsewhere.
mPrimBuffs.push_back( pb );
mVBs.push_back( vb );
// Submit render inst...
MeshRenderInst *ri = renderPass->allocInst<MeshRenderInst>();
*ri = baseRenderInst;
ri->primBuff = &mPrimBuffs.last();
ri->vertBuff = &mVBs.last();
ri->matInst = currentBatch.matInst;
ri->prim = renderPass->allocPrim();
ri->prim->type = GFXTriangleList;
ri->prim->minIndex = 0;
ri->prim->startIndex = 0;
ri->prim->numPrimitives = currentBatch.iCount / 3;
ri->prim->startVertex = 0;
ri->prim->numVertices = currentBatch.vCount;
// Ugly hack for ProjectedShadow!
if ( customTex )
ri->miscTex = customTex;
// The decal bin will contain render instances for both decals and decalRoad's.
// Dynamic decals render last, then editor decals and roads in priority order.
// DefaultKey is sorted in descending order.
ri->defaultKey = currentBatch.dynamic ? 0xFFFFFFFF : (U32)currentBatch.priority;
ri->defaultKey2 = 1;//(U32)lastDecal->mDataBlock;
renderPass->addInst( ri );
}
return false;
}
void GroundPlane::generateGrid( U32 width, U32 height, F32 squareSize,
const Point2F& min, const Point2F& max,
GFXVertexBufferHandle< VertexType >& outVertices,
GFXPrimitiveBufferHandle& outPrimitives )
{
// Generate the vertices.
VertexType* vertices = outVertices.lock();
for( F32 y = min.y; y <= max.y; y += squareSize )
for( F32 x = min.x; x <= max.x; x += squareSize )
{
vertices->point.x = x;
vertices->point.y = y;
vertices->point.z = 0.0;
vertices->texCoord.x = ( x / squareSize ) * mScaleU;
vertices->texCoord.y = ( y / squareSize ) * -mScaleV;
vertices->normal.x = 0.0f;
vertices->normal.y = 0.0f;
vertices->normal.z = 1.0f;
vertices->tangent.x = 1.0f;
vertices->tangent.y = 0.0f;
vertices->tangent.z = 0.0f;
vertices->binormal.x = 0.0f;
vertices->binormal.y = 1.0f;
vertices->binormal.z = 0.0f;
vertices++;
}
outVertices.unlock();
// Generate the indices.
U16* indices;
outPrimitives.lock( &indices );
U16 corner1 = 0;
U16 corner2 = 1;
U16 corner3 = width + 1;
U16 corner4 = width + 2;
for( U32 y = 0; y < height; ++ y )
{
for( U32 x = 0; x < width; ++ x )
{
indices[ 0 ] = corner3;
indices[ 1 ] = corner2;
indices[ 2 ] = corner1;
indices += 3;
indices[ 0 ] = corner3;
indices[ 1 ] = corner4;
indices[ 2 ] = corner2;
indices += 3;
corner1 ++;
corner2 ++;
corner3 ++;
corner4 ++;
}
corner1 ++;
corner2 ++;
corner3 ++;
corner4 ++;
}
outPrimitives.unlock();
}
