Changeset 1306 for GTP/trunk/App/Demos/Geom/Demo_LodTrees

Timestamp:

08/31/06 17:11:13 (18 years ago)

Author:

gumbau

Message:

Demo efficiency improved (indexbuffers)

Location:

GTP/trunk/App/Demos/Geom/Demo_LodTrees

Files:

• Demo_LodTrees.suo (modified) (previous)
• main.cpp (modified) (3 diffs)

GTP/trunk/App/Demos/Geom/Demo_LodTrees/main.cpp

@@ -67 +67 @@
                 }
 
-                ibuf = Ogre::HardwareBufferManager::getSingleton().createIndexBuffer( 
-                        Ogre::HardwareIndexBuffer::IT_32BIT, // type of index 
-                        indices_to_render, // number of indexes 
-                        Ogre::HardwareBuffer::HBU_DISCARDABLE , // usage
-                        false); // no shadow buffer 
-                                        
-                mRenderOp.indexData->indexBuffer = ibuf;
+                ibuf = mRenderOp.indexData->indexBuffer;
                 mRenderOp.indexData->indexStart = 0;
                 mRenderOp.indexData->indexCount = indices_to_render;            
@@ -276 +270 @@
                 Geometry::Mesh *themesh = meshloader->load("../../../OgreStuff/media/GT/ML12m.mesh");
 
+                if (!meshloader->GetLodStripsData())
+            OGRE_EXCEPT(1, "The loaded mesh does not contain LOD info for the trunk","LOD Demo");
+                if (!meshloader->GetTreeSimpSeq())
+            OGRE_EXCEPT(1, "The loaded mesh does not contain LOD info for the foliage","LOD Demo");
+
                 myTrees = new Geometry::LodTreeLibrary(meshloader->GetLodStripsData(),meshloader->GetTreeSimpSeq(),themesh);
 
@@ -283 +282 @@
                 {
                         bool istrunk = myTrees->GetLeavesSubMesh()!=submesh;
+                        int indices_to_render = 0;
                         if (istrunk)
+                        {
                                 entity->getSubEntity(submesh)->setMaterialName("Examples/Populifolia/trunk");
+                                indices_to_render = myTrees->GetValidTrunkIndexCount(submesh);
+                        }
                         else
+                        {
                                 entity->getSubEntity(submesh)->setMaterialName("Examples/Populifolia/leaf");
+                                indices_to_render = myTrees->CurrentLOD_Foliage_IndexCount();
+                        }
+
+                        Ogre::RenderOperation mRenderOp;
+                        ogreMesh->getSubMesh(submesh)->_getRenderOperation(mRenderOp,0);
+
+                        mRenderOp.indexData->indexBuffer = Ogre::HardwareBufferManager::getSingleton().createIndexBuffer( 
+                                Ogre::HardwareIndexBuffer::IT_32BIT, // type of index 
+                                indices_to_render, // number of indexes 
+                                Ogre::HardwareBuffer::HBU_DISCARDABLE , // usage
+                                false); // no shadow buffer 
                 }