/*
=================
idRenderModelOverlay::ReUse
=================
*/
void idRenderModelOverlay::ReUse()
{
firstOverlay = 0;
nextOverlay = 0;
firstDeferredOverlay = 0;
nextDeferredOverlay = 0;
numOverlayMaterials = 0;
for( unsigned int i = 0; i < MAX_OVERLAYS; i++ )
{
FreeOverlay( overlays[i] );
}
}
DWORD COverlayRenderer::ScheduleThread()
{
const DWORD eventArraySize = 4;
HANDLE handles[eventArraySize];
handles[0] = m_hStopThreadEvent;
handles[1] = m_hOverlayTimerIG;
handles[2] = m_hOverlayTimerPG;
handles[3] = m_hNewOverlayAvailable;
DWORD stopThread = WAIT_OBJECT_0;
DWORD processOverlayIG = WAIT_OBJECT_0 + 1;
DWORD processOverlayPG = WAIT_OBJECT_0 + 2;
DWORD newOverlayAvailable = WAIT_OBJECT_0 + 3;
while (true)
{
ScheduleOverlays();
DWORD result = WaitForMultipleObjects(eventArraySize, handles, false, INFINITE);
if (result == WAIT_FAILED)
return 0;
else if (result == stopThread)
return 0;
else if(result == newOverlayAvailable)
{
CAutoLock queueLock(&m_csOverlayQueue);
ResetEvent(m_hNewOverlayAvailable);
#ifdef LOG_DRAWING
LogDebug("newOverlayAvailable");
#endif
}
else if (result == processOverlayIG || result == processOverlayPG)
{
UINT8 plane = result == processOverlayIG ? BD_OVERLAY_IG : BD_OVERLAY_PG;
CAutoLock queueLock(&m_csOverlayQueue);
if (!m_overlayQueue[plane].empty())
{
ivecOverlayQueue it = m_overlayQueue[plane].begin();
if ((*it))
{
#ifdef LOG_DRAWING
LogDebug("RENDERING PTS: %6.3f", (CONVERT_90KHz_DS((*it)->pts) + m_rtOffset) / 10000000.0);
#endif
// close frees all overlays
bool freeOverlay = (*it)->cmd != BD_OVERLAY_CLOSE;
ProcessOverlay((*it));
if (freeOverlay)
FreeOverlay(it);
}
else
FreeOverlay(it);
}
}
}
return 0;
}
/*
====================
idRenderModelOverlay::CreateOverlayDrawSurf
====================
*/
drawSurf_t* idRenderModelOverlay::CreateOverlayDrawSurf( const viewEntity_t* space, const idRenderModel* baseModel, unsigned int index )
{
if( index < 0 || index >= numOverlayMaterials )
{
return NULL;
}
// md5 models won't have any surfaces when r_showSkel is set
if( baseModel == NULL || baseModel->IsDefaultModel() || baseModel->NumSurfaces() == 0 )
{
return NULL;
}
assert( baseModel->IsDynamicModel() == DM_STATIC );
const idRenderModelStatic* staticModel = static_cast< const idRenderModelStatic* >( baseModel );
const idMaterial* material = overlayMaterials[index];
int maxVerts = 0;
int maxIndexes = 0;
for( unsigned int i = firstOverlay; i < nextOverlay; i++ )
{
const overlay_t& overlay = overlays[i & ( MAX_OVERLAYS - 1 )];
if( overlay.material == material )
{
maxVerts += overlay.numVerts;
maxIndexes += overlay.numIndexes;
}
}
if( maxVerts == 0 || maxIndexes == 0 )
{
return NULL;
}
// create a new triangle surface in frame memory so it gets automatically disposed of
srfTriangles_t* newTri = ( srfTriangles_t* )R_ClearedFrameAlloc( sizeof( *newTri ), FRAME_ALLOC_SURFACE_TRIANGLES );
newTri->staticModelWithJoints = ( staticModel->jointsInverted != NULL ) ? const_cast< idRenderModelStatic* >( staticModel ) : NULL; // allow GPU skinning
newTri->ambientCache = vertexCache.AllocVertex( NULL, ALIGN( maxVerts * sizeof( idDrawVert ), VERTEX_CACHE_ALIGN ) );
newTri->indexCache = vertexCache.AllocIndex( NULL, ALIGN( maxIndexes * sizeof( triIndex_t ), INDEX_CACHE_ALIGN ) );
idDrawVert* mappedVerts = ( idDrawVert* )vertexCache.MappedVertexBuffer( newTri->ambientCache );
triIndex_t* mappedIndexes = ( triIndex_t* )vertexCache.MappedIndexBuffer( newTri->indexCache );
int numVerts = 0;
int numIndexes = 0;
for( unsigned int i = firstOverlay; i < nextOverlay; i++ )
{
overlay_t& overlay = overlays[i & ( MAX_OVERLAYS - 1 )];
if( overlay.numVerts == 0 )
{
if( i == firstOverlay )
{
firstOverlay++;
}
continue;
}
if( overlay.material != material )
{
continue;
}
// get the source model surface for this overlay surface
const modelSurface_t* baseSurf = ( overlay.surfaceNum < staticModel->NumSurfaces() ) ? staticModel->Surface( overlay.surfaceNum ) : NULL;
// if the surface ids no longer match
if( baseSurf == NULL || baseSurf->id != overlay.surfaceId )
{
// find the surface with the correct id
if( staticModel->FindSurfaceWithId( overlay.surfaceId, overlay.surfaceNum ) )
{
baseSurf = staticModel->Surface( overlay.surfaceNum );
}
else
{
// the surface with this id no longer exists
FreeOverlay( overlay );
if( i == firstOverlay )
{
firstOverlay++;
}
continue;
}
}
// check for out of range vertex references
const srfTriangles_t* baseTri = baseSurf->geometry;
if( overlay.maxReferencedVertex >= baseTri->numVerts )
{
// This can happen when playing a demofile and a model has been changed since it was recorded, so just issue a warning and go on.
common->Warning( "idRenderModelOverlay::CreateOverlayDrawSurf: overlay vertex out of range. Model has probably changed since generating the overlay." );
FreeOverlay( overlay );
if( i == firstOverlay )
{
firstOverlay++;
}
continue;
}
// use SIMD optimized routine to copy the vertices and indices directly to write-combined memory
R_CopyOverlaySurface( mappedVerts, numVerts, mappedIndexes, numIndexes, &overlay, baseTri->verts );
numIndexes += overlay.numIndexes;
numVerts += overlay.numVerts;
}
newTri->numVerts = numVerts;
newTri->numIndexes = numIndexes;
// create the drawsurf
drawSurf_t* drawSurf = ( drawSurf_t* )R_FrameAlloc( sizeof( *drawSurf ), FRAME_ALLOC_DRAW_SURFACE );
drawSurf->frontEndGeo = newTri;
drawSurf->numIndexes = newTri->numIndexes;
drawSurf->ambientCache = newTri->ambientCache;
drawSurf->indexCache = newTri->indexCache;
drawSurf->shadowCache = 0;
drawSurf->space = space;
drawSurf->scissorRect = space->scissorRect;
drawSurf->extraGLState = 0;
drawSurf->renderZFail = 0;
R_SetupDrawSurfShader( drawSurf, material, &space->entityDef->parms );
R_SetupDrawSurfJoints( drawSurf, newTri, NULL );
return drawSurf;
}
/*
=====================
idRenderModelOverlay::CreateOverlay
This projects on both front and back sides to avoid seams
The material should be clamped, because entire triangles are added, some of which
may extend well past the 0.0 to 1.0 texture range
=====================
*/
void idRenderModelOverlay::CreateOverlay( const idRenderModel* model, const idPlane localTextureAxis[2], const idMaterial* material )
{
// count up the maximum possible vertices and indexes per surface
int maxVerts = 0;
int maxIndexes = 0;
for( int surfNum = 0; surfNum < model->NumSurfaces(); surfNum++ )
{
const modelSurface_t* surf = model->Surface( surfNum );
if( surf->geometry->numVerts > maxVerts )
{
maxVerts = surf->geometry->numVerts;
}
if( surf->geometry->numIndexes > maxIndexes )
{
maxIndexes = surf->geometry->numIndexes;
}
}
maxIndexes += 3 * 16 / sizeof( triIndex_t ); // to allow the index size to be a multiple of 16 bytes
// make temporary buffers for the building process
idTempArray< byte > cullBits( maxVerts );
idTempArray< halfFloat_t > texCoordS( maxVerts );
idTempArray< halfFloat_t > texCoordT( maxVerts );
idTempArray< triIndex_t > vertexRemap( maxVerts );
idTempArray< overlayVertex_t > overlayVerts( maxVerts );
idTempArray< triIndex_t > overlayIndexes( maxIndexes );
// pull out the triangles we need from the base surfaces
for( int surfNum = 0; surfNum < model->NumBaseSurfaces(); surfNum++ )
{
const modelSurface_t* surf = model->Surface( surfNum );
if( surf->geometry == NULL || surf->shader == NULL )
{
continue;
}
// some surfaces can explicitly disallow overlays
if( !surf->shader->AllowOverlays() )
{
continue;
}
const srfTriangles_t* tri = surf->geometry;
// try to cull the whole surface along the first texture axis
const float d0 = tri->bounds.PlaneDistance( localTextureAxis[0] );
if( d0 < 0.0f || d0 > 1.0f )
{
continue;
}
// try to cull the whole surface along the second texture axis
const float d1 = tri->bounds.PlaneDistance( localTextureAxis[1] );
if( d1 < 0.0f || d1 > 1.0f )
{
continue;
}
if( tri->staticModelWithJoints != NULL && r_useGPUSkinning.GetBool() )
{
R_OverlayPointCullSkinned( cullBits.Ptr(), texCoordS.Ptr(), texCoordT.Ptr(), localTextureAxis, tri->verts, tri->numVerts, tri->staticModelWithJoints->jointsInverted );
}
else
{
R_OverlayPointCullStatic( cullBits.Ptr(), texCoordS.Ptr(), texCoordT.Ptr(), localTextureAxis, tri->verts, tri->numVerts );
}
// start streaming the indexes
idODSStreamedArray< triIndex_t, 256, SBT_QUAD, 3 > indexesODS( tri->indexes, tri->numIndexes );
memset( vertexRemap.Ptr(), -1, vertexRemap.Size() );
int numIndexes = 0;
int numVerts = 0;
int maxReferencedVertex = 0;
// find triangles that need the overlay
for( int i = 0; i < tri->numIndexes; )
{
const int nextNumIndexes = indexesODS.FetchNextBatch() - 3;
for( ; i <= nextNumIndexes; i += 3 )
{
const int i0 = indexesODS[i + 0];
const int i1 = indexesODS[i + 1];
const int i2 = indexesODS[i + 2];
// skip triangles completely off one side
if( cullBits[i0] & cullBits[i1] & cullBits[i2] )
{
continue;
}
// we could do more precise triangle culling, like a light interaction does, but it's not worth it
// keep this triangle
for( int j = 0; j < 3; j++ )
{
int index = tri->indexes[i + j];
if( vertexRemap[index] == ( triIndex_t ) - 1 )
{
vertexRemap[index] = numVerts;
overlayVerts[numVerts].vertexNum = index;
overlayVerts[numVerts].st[0] = texCoordS[index];
overlayVerts[numVerts].st[1] = texCoordT[index];
numVerts++;
maxReferencedVertex = Max( maxReferencedVertex, index );
}
overlayIndexes[numIndexes] = vertexRemap[index];
numIndexes++;
}
}
}
if( numIndexes == 0 )
{
continue;
}
// add degenerate triangles until the index size is a multiple of 16 bytes
for( ; ( ( ( numIndexes * sizeof( triIndex_t ) ) & 15 ) != 0 ); numIndexes += 3 )
{
overlayIndexes[numIndexes + 0] = 0;
overlayIndexes[numIndexes + 1] = 0;
overlayIndexes[numIndexes + 2] = 0;
}
// allocate a new overlay
overlay_t& overlay = overlays[nextOverlay++ & ( MAX_OVERLAYS - 1 )];
FreeOverlay( overlay );
overlay.material = material;
overlay.surfaceNum = surfNum;
overlay.surfaceId = surf->id;
overlay.numIndexes = numIndexes;
overlay.indexes = ( triIndex_t* )Mem_Alloc( numIndexes * sizeof( overlay.indexes[0] ), TAG_MODEL );
memcpy( overlay.indexes, overlayIndexes.Ptr(), numIndexes * sizeof( overlay.indexes[0] ) );
overlay.numVerts = numVerts;
overlay.verts = ( overlayVertex_t* )Mem_Alloc( numVerts * sizeof( overlay.verts[0] ), TAG_MODEL );
memcpy( overlay.verts, overlayVerts.Ptr(), numVerts * sizeof( overlay.verts[0] ) );
overlay.maxReferencedVertex = maxReferencedVertex;
if( nextOverlay - firstOverlay > MAX_OVERLAYS )
{
firstOverlay = nextOverlay - MAX_OVERLAYS;
}
}
}