instancingMatHook.cpp

Detailed Description

 1
 2//-----------------------------------------------------------------------------
 3// Copyright (c) 2012 GarageGames, LLC
 4//
 5// Permission is hereby granted, free of charge, to any person obtaining a copy
 6// of this software and associated documentation files (the "Software"), to
 7// deal in the Software without restriction, including without limitation the
 8// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 9// sell copies of the Software, and to permit persons to whom the Software is
10// furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in
13// all copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21// IN THE SOFTWARE.
22//-----------------------------------------------------------------------------
23
24#include "platform/platform.h"
25#include "ts/instancingMatHook.h"
26
27#include "platform/profiler.h"
28#include "materials/materialFeatureTypes.h"
29#include "materials/matInstance.h"
30
31
32const MatInstanceHookType InstancingMaterialHook::Type( "Instancing" );
33
34InstancingMaterialHook::InstancingMaterialHook() :
35   mMatInst( NULL )
36{
37}
38
39InstancingMaterialHook::~InstancingMaterialHook()
40{
41   SAFE_DELETE( mMatInst );
42}
43
44BaseMatInstance* InstancingMaterialHook::getInstancingMat( BaseMatInstance *matInst )
45{
46   PROFILE_SCOPE( InstancingMaterialHook_GetInstancingMat );
47
48   if ( matInst == NULL )
49      return NULL;
50
51   InstancingMaterialHook *hook = matInst->getHook<InstancingMaterialHook>();
52   if ( hook == NULL )
53   {
54      hook = new InstancingMaterialHook();
55      matInst->addHook( hook );
56
57      BaseMatInstance *instMat = matInst->getMaterial()->createMatInstance();
58      FeatureSet features( matInst->getRequestedFeatures() );
59      features.addFeature( MFT_UseInstancing ); 
60
61      // Allow for named texture assignments
62      Material::sAllowTextureTargetAssignment = true;
63
64      if ( !instMat->init( features, matInst->getVertexFormat() ) )
65         SAFE_DELETE( instMat );
66
67      // Turn back off named texture assignments
68      Material::sAllowTextureTargetAssignment = false;
69
70      hook->mMatInst = instMat;
71   }
72
73   return hook->mMatInst;
74}
75