Engine directory for ticket #1

Engine/source/renderInstance/renderOcclusionMgr.cpp

@@ -0,0 +1,254 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#include "platform/platform.h"
+#include "renderOcclusionMgr.h"
+
+#include "console/consoleTypes.h"
+#include "scene/sceneObject.h"
+#include "gfx/gfxOcclusionQuery.h"
+#include "gfx/gfxDrawUtil.h"
+#include "gfx/gfxTransformSaver.h"
+#include "math/util/sphereMesh.h"
+#include "gfx/gfxDebugEvent.h"
+
+
+IMPLEMENT_CONOBJECT(RenderOcclusionMgr);
+
+ConsoleDocClass( RenderOcclusionMgr, 
+   "@brief A render bin which renders occlusion query requests.\n\n"
+   "This render bin gathers occlusion query render instances and renders them. "
+   "It is currently used by light flares and ShapeBase reflection cubemaps.\n\n"
+   "You can type '$RenderOcclusionMgr::debugRender = true' in the console to "
+   "see debug rendering of the occlusion geometry.\n\n"
+   "@ingroup RenderBin\n" );
+
+
+bool RenderOcclusionMgr::smDebugRender = false;
+
+RenderOcclusionMgr::RenderOcclusionMgr()
+: RenderBinManager(RenderPassManager::RIT_Occluder, 1.0f, 1.0f)
+{
+   mOverrideMat = NULL;
+   mSpherePrimCount = 0;
+}
+
+RenderOcclusionMgr::RenderOcclusionMgr(RenderInstType riType, F32 renderOrder, F32 processAddOrder)
+: RenderBinManager(riType, renderOrder, processAddOrder)
+{  
+   mOverrideMat = NULL;
+}
+
+static const Point3F cubePoints[8] = 
+{
+   Point3F(-0.5, -0.5, -0.5), Point3F(-0.5, -0.5,  0.5), Point3F(-0.5,  0.5, -0.5), Point3F(-0.5,  0.5,  0.5),
+   Point3F( 0.5, -0.5, -0.5), Point3F( 0.5, -0.5,  0.5), Point3F( 0.5,  0.5, -0.5), Point3F( 0.5,  0.5,  0.5)
+};
+
+static const U32 cubeFaces[6][4] = 
+{
+   { 0, 4, 6, 2 }, { 0, 2, 3, 1 }, { 0, 1, 5, 4 },
+   { 3, 2, 6, 7 }, { 7, 6, 4, 5 }, { 3, 7, 5, 1 }
+};
+
+void RenderOcclusionMgr::init()
+{
+   GFXStateBlockDesc d;
+
+   d.setBlend( false );   
+   d.cullDefined = true;
+   d.cullMode = GFXCullCCW;
+   d.setZReadWrite( true, false );   
+
+   mDebugSB = GFX->createStateBlock(d);
+
+   d.setColorWrites( false, false, false, false );
+
+   mNormalSB = GFX->createStateBlock(d);      
+
+   d.setZReadWrite( false, false );
+
+   mTestSB = GFX->createStateBlock(d);
+
+   mBoxBuff.set( GFX, 36, GFXBufferTypeStatic );
+   GFXVertexPC *verts = mBoxBuff.lock();
+
+   U32 vertexIndex = 0;
+   U32 idx;
+   for(int i = 0; i < 6; i++)
+   {
+      idx = cubeFaces[i][0];
+      verts[vertexIndex].point = cubePoints[idx];
+      verts[vertexIndex].color.set( 1,0,1,1 );
+      vertexIndex++;
+
+      idx = cubeFaces[i][1];
+      verts[vertexIndex].point = cubePoints[idx];
+      verts[vertexIndex].color.set( 1,0,1,1 );
+      vertexIndex++;
+
+      idx = cubeFaces[i][3];
+      verts[vertexIndex].point = cubePoints[idx];
+      verts[vertexIndex].color.set( 1,0,1,1 );
+      vertexIndex++;
+
+      idx = cubeFaces[i][1];
+      verts[vertexIndex].point = cubePoints[idx];
+      verts[vertexIndex].color.set( 1,0,1,1 );
+      vertexIndex++;
+
+      idx = cubeFaces[i][3];
+      verts[vertexIndex].point = cubePoints[idx];
+      verts[vertexIndex].color.set( 1,0,1,1 );
+      vertexIndex++;
+
+      idx = cubeFaces[i][2];
+      verts[vertexIndex].point = cubePoints[idx];
+      verts[vertexIndex].color.set( 1,0,1,1 );
+      vertexIndex++;
+   }
+
+   mBoxBuff.unlock();
+
+   SphereMesh sphere;
+   const SphereMesh::TriangleMesh *sphereMesh = sphere.getMesh(1);
+   mSpherePrimCount = sphereMesh->numPoly;
+   mSphereBuff.set( GFX, mSpherePrimCount * 3, GFXBufferTypeStatic );
+   verts = mSphereBuff.lock();
+   vertexIndex = 0;
+
+   for ( S32 i = 0; i < mSpherePrimCount; i++ )
+   {      
+      verts[vertexIndex].point = sphereMesh->poly[i].pnt[0];
+      verts[vertexIndex].color.set( 1,0,1,1 );
+      vertexIndex++;
+
+      verts[vertexIndex].point = sphereMesh->poly[i].pnt[1];
+      verts[vertexIndex].color.set( 1,0,1,1 );
+      vertexIndex++;
+
+      verts[vertexIndex].point = sphereMesh->poly[i].pnt[2];
+      verts[vertexIndex].color.set( 1,0,1,1 );
+      vertexIndex++;
+   }
+   mSphereBuff.unlock();
+}
+
+void RenderOcclusionMgr::consoleInit()
+{
+   Con::addVariable( "$RenderOcclusionMgr::debugRender", TypeBool, &RenderOcclusionMgr::smDebugRender,
+      "@brief A debugging feature which renders the occlusion volumes to the scene.\n"
+      "@see RenderOcclusionMgr\n"
+      "@ingroup RenderBin\n" );
+}
+
+void RenderOcclusionMgr::initPersistFields()
+{
+   Parent::initPersistFields();
+}
+
+//-----------------------------------------------------------------------------
+// render objects
+//-----------------------------------------------------------------------------
+void RenderOcclusionMgr::render( SceneRenderState *state )
+{
+   PROFILE_SCOPE(RenderOcclusionMgr_render);
+
+   // Early out if nothing to draw.
+   if ( !mElementList.size() )
+      return;
+   
+   GFXDEBUGEVENT_SCOPE(RenderOcclusionMgr_Render, ColorI::BLUE);
+
+   if ( mNormalSB.isNull() )
+      init();
+
+   GFX->disableShaders();
+   GFX->setupGenericShaders( GFXDevice::GSColor );  
+
+
+   OccluderRenderInst *firstEl = static_cast<OccluderRenderInst*>(mElementList[0].inst);
+   
+   if ( firstEl->isSphere )   
+      GFX->setVertexBuffer( mSphereBuff );
+   else
+      GFX->setVertexBuffer( mBoxBuff );
+
+   bool wasSphere = firstEl->isSphere;   
+
+
+   for( U32 i=0; i<mElementList.size(); i++ )
+   {
+      OccluderRenderInst *ri = static_cast<OccluderRenderInst*>(mElementList[i].inst);
+      
+      AssertFatal( ri->query != NULL, "RenderOcclusionMgr::render, OcclusionRenderInst has NULL GFXOcclusionQuery" );
+
+      if ( ri->isSphere != wasSphere )
+      {
+         if ( ri->isSphere )
+            GFX->setVertexBuffer( mSphereBuff );
+         else
+            GFX->setVertexBuffer( mBoxBuff );
+
+         wasSphere = ri->isSphere;
+      }
+
+      GFX->pushWorldMatrix();
+      
+      MatrixF xfm( *ri->orientation );
+      xfm.setPosition( ri->position );      
+      xfm.scale( ri->scale );
+
+      //GFXTransformSaver saver;      
+      GFX->multWorld( xfm );
+
+      if ( smDebugRender )
+         GFX->setStateBlock( mDebugSB );
+      else
+         GFX->setStateBlock( mNormalSB );   
+
+      ri->query->begin();
+      
+      if ( wasSphere )
+         GFX->drawPrimitive( GFXTriangleList, 0, mSpherePrimCount );
+      else
+         GFX->drawPrimitive( GFXTriangleList, 0, 12 );
+
+      ri->query->end();
+
+      if ( ri->query2 )
+      {
+         GFX->setStateBlock( mTestSB );
+
+         ri->query2->begin();
+
+         if ( wasSphere )
+            GFX->drawPrimitive( GFXTriangleList, 0, mSpherePrimCount );
+         else
+            GFX->drawPrimitive( GFXTriangleList, 0, 12 );
+
+         ri->query2->end();
+      }
+
+      GFX->popWorldMatrix();      
+   }
+}