Fix naming scheme for occlusion queries. Since those are not to drop, but are stored in the driver and can be removed by the according removeOcclusionQuery call, the name should be addOcclusionQuery instead of createOcclusionQuery.
Added an example showing a very simple occlusion query setup. git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@3628 dfc29bdd-3216-0410-991c-e03cc46cb475master
hybrid
parent
76794587fd
commit
9478732cc5
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@ -0,0 +1,39 @@
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|||
# Makefile for Irrlicht Examples
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||||
# It's usually sufficient to change just the target name and source file list
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# and be sure that CXX is set to a valid compiler
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Target = 26.OcclusionQuery
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Sources = main.cpp
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# general compiler settings
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||||
CPPFLAGS = -I../../include -I/usr/X11R6/include
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||||
CXXFLAGS = -O3 -ffast-math
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||||
#CXXFLAGS = -g -Wall
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||||
#default target is Linux
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all: all_linux
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ifeq ($(HOSTTYPE), x86_64)
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LIBSELECT=64
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endif
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||||
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# target specific settings
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all_linux: LDFLAGS = -L/usr/X11R6/lib$(LIBSELECT) -L../../lib/Linux -lIrrlicht -lGL -lXxf86vm -lXext -lX11 -lXcursor
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all_linux clean_linux: SYSTEM=Linux
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all_win32: LDFLAGS = -L../../lib/Win32-gcc -lIrrlicht -lopengl32 -lm
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all_win32: CPPFLAGS += -D__GNUWIN32__ -D_WIN32 -DWIN32 -D_WINDOWS -D_MBCS -D_USRDLL
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all_win32 clean_win32: SYSTEM=Win32-gcc
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all_win32 clean_win32: SUF=.exe
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||||
# name of the binary - only valid for targets which set SYSTEM
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DESTPATH = ../../bin/$(SYSTEM)/$(Target)$(SUF)
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all_linux all_win32:
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$(warning Building...)
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$(CXX) $(CPPFLAGS) $(CXXFLAGS) $(Sources) -o $(DESTPATH) $(LDFLAGS)
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clean: clean_linux clean_win32
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$(warning Cleaning...)
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clean_linux clean_win32:
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@$(RM) $(DESTPATH)
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.PHONY: all all_win32 clean clean_linux clean_win32
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@ -0,0 +1,59 @@
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<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
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||||
<CodeBlocks_project_file>
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||||
<FileVersion major="1" minor="6" />
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||||
<Project>
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||||
<Option title="Irrlicht Example 26 OcclusionQuery" />
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||||
<Option pch_mode="0" />
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<Option compiler="gcc" />
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<Build>
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<Target title="Windows">
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<Option output="../../bin/Win32-gcc/OcclusionQuery" prefix_auto="0" extension_auto="1" />
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<Option type="1" />
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<Option compiler="gcc" />
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<Option projectResourceIncludeDirsRelation="1" />
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<Compiler>
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<Add option="-W" />
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<Add option="-g" />
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<Add option="-D_IRR_STATIC_LIB_" />
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</Compiler>
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<Linker>
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<Add directory="../../lib/Win32-gcc" />
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</Linker>
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</Target>
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<Target title="Linux">
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<Option platforms="Unix;" />
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<Option output="../../bin/Linux/OcclusionQuery" prefix_auto="0" extension_auto="0" />
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<Option type="1" />
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<Option compiler="gcc" />
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<Compiler>
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<Add option="-g" />
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<Add option="-W" />
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<Add option="-D_IRR_STATIC_LIB_" />
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</Compiler>
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<Linker>
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<Add library="Xxf86vm" />
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<Add library="Xcursor" />
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<Add library="GL" />
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<Add directory="../../lib/Linux" />
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</Linker>
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</Target>
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</Build>
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<VirtualTargets>
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<Add alias="All" targets="Windows;Linux" />
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</VirtualTargets>
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<Compiler>
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<Add option="-W" />
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<Add option="-g" />
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<Add directory="../../include" />
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</Compiler>
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<Linker>
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<Add library="Irrlicht" />
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</Linker>
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<Unit filename="main.cpp" />
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<Extensions>
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<code_completion />
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||||
<debugger />
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<envvars />
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||||
</Extensions>
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||||
</Project>
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||||
</CodeBlocks_project_file>
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@ -0,0 +1,59 @@
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[Project]
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||||
FileName=example.dev
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Name=Irrlicht Example 26 OcclusionQuery
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UnitCount=1
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||||
Type=1
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||||
Ver=1
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||||
ObjFiles=
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Includes=..\..\include
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||||
Libs=
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PrivateResource=
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||||
ResourceIncludes=
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MakeIncludes=
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||||
Compiler=
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||||
CppCompiler=
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||||
Linker=../../lib/Win32-gcc/libIrrlicht.a_@@_
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||||
IsCpp=1
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||||
Icon=
|
||||
ExeOutput=../../bin/Win32-gcc
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||||
ObjectOutput=obj
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||||
OverrideOutput=1
|
||||
OverrideOutputName=26.OcclusionQuery.exe
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||||
HostApplication=
|
||||
Folders=
|
||||
CommandLine=
|
||||
IncludeVersionInfo=0
|
||||
SupportXPThemes=0
|
||||
CompilerSet=0
|
||||
CompilerSettings=0000000000000000000000
|
||||
UseCustomMakefile=0
|
||||
CustomMakefile=
|
||||
|
||||
[Unit1]
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||||
FileName=main.cpp
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||||
CompileCpp=1
|
||||
Folder=Projekt1
|
||||
Compile=1
|
||||
Link=1
|
||||
Priority=1000
|
||||
OverrideBuildCmd=0
|
||||
BuildCmd=
|
||||
|
||||
[VersionInfo]
|
||||
Major=0
|
||||
Minor=1
|
||||
Release=1
|
||||
Build=1
|
||||
LanguageID=1033
|
||||
CharsetID=1252
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||||
CompanyName=
|
||||
FileVersion=
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||||
FileDescription=Irrlicht Engine example compiled using DevCpp and gcc
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||||
InternalName=
|
||||
LegalCopyright=
|
||||
LegalTrademarks=
|
||||
OriginalFilename=
|
||||
ProductName=
|
||||
ProductVersion=
|
||||
AutoIncBuildNr=0
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||||
|
||||
|
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@ -0,0 +1,163 @@
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|||
<?xml version="1.0" encoding="Windows-1252"?>
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||||
<VisualStudioProject
|
||||
ProjectType="Visual C++"
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||||
Version="7.10"
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||||
Name="26.OcclusionQuery"
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||||
ProjectGUID="{735B050B-1AC5-4602-B0BE-D2D2B5893E94}"
|
||||
SccProjectName=""
|
||||
SccLocalPath="">
|
||||
<Platforms>
|
||||
<Platform
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||||
Name="Win32"/>
|
||||
</Platforms>
|
||||
<Configurations>
|
||||
<Configuration
|
||||
Name="Debug|Win32"
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||||
OutputDirectory=".\Debug"
|
||||
IntermediateDirectory=".\Debug"
|
||||
ConfigurationType="1"
|
||||
UseOfMFC="0"
|
||||
ATLMinimizesCRunTimeLibraryUsage="FALSE"
|
||||
CharacterSet="2">
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
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||||
Optimization="0"
|
||||
AdditionalIncludeDirectories="..\..\include"
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||||
PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
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||||
BasicRuntimeChecks="3"
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||||
RuntimeLibrary="5"
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||||
UsePrecompiledHeader="2"
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||||
PrecompiledHeaderFile=".\Debug\OcclusionQuery.pch"
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||||
AssemblerListingLocation=".\Debug/"
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||||
ObjectFile=".\Debug/"
|
||||
ProgramDataBaseFileName=".\Debug/"
|
||||
WarningLevel="3"
|
||||
SuppressStartupBanner="TRUE"
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||||
DebugInformationFormat="4"
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||||
CompileAs="0"/>
|
||||
<Tool
|
||||
Name="VCCustomBuildTool"/>
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||||
<Tool
|
||||
Name="VCLinkerTool"
|
||||
OutputFile="..\..\bin\Win32-VisualStudio\26.OcclusionQuery.exe"
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||||
LinkIncremental="0"
|
||||
SuppressStartupBanner="TRUE"
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||||
AdditionalLibraryDirectories="..\..\lib\Win32-visualstudio"
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||||
GenerateDebugInformation="TRUE"
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||||
ProgramDatabaseFile=".\Debug\OcclusionQuery.pdb"
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||||
SubSystem="1"
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||||
TargetMachine="1"/>
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||||
<Tool
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||||
Name="VCMIDLTool"
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||||
TypeLibraryName=".\Debug\OcclusionQuery.tlb"
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||||
HeaderFileName=""/>
|
||||
<Tool
|
||||
Name="VCPostBuildEventTool"/>
|
||||
<Tool
|
||||
Name="VCPreBuildEventTool"/>
|
||||
<Tool
|
||||
Name="VCPreLinkEventTool"/>
|
||||
<Tool
|
||||
Name="VCResourceCompilerTool"
|
||||
PreprocessorDefinitions="_DEBUG"
|
||||
Culture="3079"/>
|
||||
<Tool
|
||||
Name="VCWebServiceProxyGeneratorTool"/>
|
||||
<Tool
|
||||
Name="VCXMLDataGeneratorTool"/>
|
||||
<Tool
|
||||
Name="VCWebDeploymentTool"/>
|
||||
<Tool
|
||||
Name="VCManagedWrapperGeneratorTool"/>
|
||||
<Tool
|
||||
Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
|
||||
</Configuration>
|
||||
<Configuration
|
||||
Name="Release|Win32"
|
||||
OutputDirectory=".\Release"
|
||||
IntermediateDirectory=".\Release"
|
||||
ConfigurationType="1"
|
||||
UseOfMFC="0"
|
||||
ATLMinimizesCRunTimeLibraryUsage="FALSE"
|
||||
CharacterSet="2">
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
Optimization="2"
|
||||
InlineFunctionExpansion="1"
|
||||
AdditionalIncludeDirectories="..\..\include"
|
||||
PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
|
||||
StringPooling="TRUE"
|
||||
RuntimeLibrary="4"
|
||||
EnableFunctionLevelLinking="TRUE"
|
||||
UsePrecompiledHeader="2"
|
||||
PrecompiledHeaderFile=".\Release\OcclusionQuery.pch"
|
||||
AssemblerListingLocation=".\Release/"
|
||||
ObjectFile=".\Release/"
|
||||
ProgramDataBaseFileName=".\Release/"
|
||||
WarningLevel="3"
|
||||
SuppressStartupBanner="TRUE"
|
||||
CompileAs="0"/>
|
||||
<Tool
|
||||
Name="VCCustomBuildTool"/>
|
||||
<Tool
|
||||
Name="VCLinkerTool"
|
||||
OutputFile="..\..\bin\Win32-VisualStudio\26.OcclusionQuery.exe"
|
||||
LinkIncremental="0"
|
||||
SuppressStartupBanner="TRUE"
|
||||
AdditionalLibraryDirectories="..\..\lib\Win32-visualstudio"
|
||||
ProgramDatabaseFile=".\Release\OcclusionQuery.pdb"
|
||||
SubSystem="1"
|
||||
TargetMachine="1"/>
|
||||
<Tool
|
||||
Name="VCMIDLTool"
|
||||
TypeLibraryName=".\Release\OcclusionQuery.tlb"
|
||||
HeaderFileName=""/>
|
||||
<Tool
|
||||
Name="VCPostBuildEventTool"/>
|
||||
<Tool
|
||||
Name="VCPreBuildEventTool"/>
|
||||
<Tool
|
||||
Name="VCPreLinkEventTool"/>
|
||||
<Tool
|
||||
Name="VCResourceCompilerTool"
|
||||
PreprocessorDefinitions="NDEBUG"
|
||||
Culture="3079"/>
|
||||
<Tool
|
||||
Name="VCWebServiceProxyGeneratorTool"/>
|
||||
<Tool
|
||||
Name="VCXMLDataGeneratorTool"/>
|
||||
<Tool
|
||||
Name="VCWebDeploymentTool"/>
|
||||
<Tool
|
||||
Name="VCManagedWrapperGeneratorTool"/>
|
||||
<Tool
|
||||
Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
|
||||
</Configuration>
|
||||
</Configurations>
|
||||
<References>
|
||||
</References>
|
||||
<Files>
|
||||
<File
|
||||
RelativePath="main.cpp">
|
||||
<FileConfiguration
|
||||
Name="Debug|Win32">
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
Optimization="0"
|
||||
AdditionalIncludeDirectories=""
|
||||
PreprocessorDefinitions=""
|
||||
BasicRuntimeChecks="3"/>
|
||||
</FileConfiguration>
|
||||
<FileConfiguration
|
||||
Name="Release|Win32">
|
||||
<Tool
|
||||
Name="VCCLCompilerTool"
|
||||
Optimization="2"
|
||||
AdditionalIncludeDirectories=""
|
||||
PreprocessorDefinitions=""/>
|
||||
</FileConfiguration>
|
||||
</File>
|
||||
</Files>
|
||||
<Globals>
|
||||
</Globals>
|
||||
</VisualStudioProject>
|
||||
|
|
@ -0,0 +1,128 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
|
||||
<ItemGroup Label="ProjectConfigurations">
|
||||
<ProjectConfiguration Include="Debug|Win32">
|
||||
<Configuration>Debug</Configuration>
|
||||
<Platform>Win32</Platform>
|
||||
</ProjectConfiguration>
|
||||
<ProjectConfiguration Include="Release|Win32">
|
||||
<Configuration>Release</Configuration>
|
||||
<Platform>Win32</Platform>
|
||||
</ProjectConfiguration>
|
||||
</ItemGroup>
|
||||
<PropertyGroup Label="Globals">
|
||||
<ProjectName>26.OcclusionQuery</ProjectName>
|
||||
<ProjectGuid>{5CE0E2E7-879D-4152-B61D-24E7D0707B45}</ProjectGuid>
|
||||
<RootNamespace>OcclusionQuery</RootNamespace>
|
||||
</PropertyGroup>
|
||||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
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||||
<ConfigurationType>Application</ConfigurationType>
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<UseOfMfc>false</UseOfMfc>
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<CharacterSet>MultiByte</CharacterSet>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
|
||||
<UseOfMfc>false</UseOfMfc>
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<CharacterSet>MultiByte</CharacterSet>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
|
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||||
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|
||||
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|
||||
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||||
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||||
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|
||||
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|
||||
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||||
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|
||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
|
||||
<StringPooling>true</StringPooling>
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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|
||||
<PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
|
||||
<Culture>0x0c07</Culture>
|
||||
</ResourceCompile>
|
||||
<Link>
|
||||
<OutputFile>..\..\bin\Win32-VisualStudio\26.OcclusionQuery.exe</OutputFile>
|
||||
<AdditionalLibraryDirectories>..\..\lib\Win32-visualstudio;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
|
||||
<SubSystem>Console</SubSystem>
|
||||
<DataExecutionPrevention>
|
||||
</DataExecutionPrevention>
|
||||
</Link>
|
||||
</ItemDefinitionGroup>
|
||||
<ItemGroup>
|
||||
<ClCompile Include="main.cpp">
|
||||
<Optimization Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Disabled</Optimization>
|
||||
<AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
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||||
<PreprocessorDefinitions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">%(PreprocessorDefinitions)</PreprocessorDefinitions>
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<BasicRuntimeChecks Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">EnableFastChecks</BasicRuntimeChecks>
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<Optimization Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">MaxSpeed</Optimization>
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<AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
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<PreprocessorDefinitions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">%(PreprocessorDefinitions)</PreprocessorDefinitions>
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|
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|
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
|
||||
<ImportGroup Label="ExtensionTargets">
|
||||
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|
||||
</Project>
|
||||
|
|
@ -0,0 +1,231 @@
|
|||
<?xml version="1.0" encoding="Windows-1252"?>
|
||||
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|
||||
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|
||||
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|
||||
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@ -0,0 +1,213 @@
|
|||
/** Example 026 OcclusionQuery
|
||||
|
||||
This Tutorial shows how to speed up rendering by use of the
|
||||
OcclusionQuery feature. The usual rendering tries to avoid rendering of
|
||||
scene nodes by culling those nodes which are outside the visible area, the
|
||||
view frustum. However, this technique does not cope with occluded objects
|
||||
which are still in the line of sight, but occluded by some larger object
|
||||
between the object and the eye (camera). Occlusion queries check exactly that.
|
||||
The queries basically measure the number of pixels that a previous render
|
||||
left on the screen.
|
||||
Since those pixels cannot be recognized at the end of a rendering anymore,
|
||||
the pixel count is measured directly when rendering. Thus, one needs to render
|
||||
the occluder (the object in front) first. This object needs to write to the
|
||||
z-buffer in order to become a real occluder. Then the node is rendered and in
|
||||
case a z-pass happens, i.e. the pixel is written to the framebuffer, the pixel
|
||||
is counted in the query.
|
||||
The result of a query is the number of pixels which got through. One can, based
|
||||
on this number, judge if the scene node is visible enough to be rendered, or if
|
||||
the node should be removed in the next round. Also note that the number of
|
||||
pixels is a safe over approximation in general. The pixels might be overdrawn
|
||||
later on, and the GPU tries to avoid inaccuracies which could lead to false
|
||||
negatives in the queries.
|
||||
|
||||
As you might have recognized already, we had to render the node to get the
|
||||
numbers. So where's the benefit, you might say. There are several ways where
|
||||
occlusion queries can help. It is often a good idea to just render the bbox
|
||||
of the node instead of the actual mesh. This is really fast and is a safe over
|
||||
approximation. If you need a more exact render with the actual geometry, it's
|
||||
a good idea to render with just basic solid material. Avoid complex shaders
|
||||
and state changes through textures. There's no need while just doing the
|
||||
occlusion query. At least if the render is not used for the actual scene. This
|
||||
is the third way to optimize occlusion queries. Just check the queries every
|
||||
5th or 10th frane, or even less frequent. This depends on the movement speed
|
||||
of the objects and camera.
|
||||
*/
|
||||
|
||||
#ifdef _MSC_VER
|
||||
// We'll also define this to stop MSVC complaining about sprintf().
|
||||
#define _CRT_SECURE_NO_WARNINGS
|
||||
#pragma comment(lib, "Irrlicht.lib")
|
||||
#endif
|
||||
|
||||
#include <irrlicht.h>
|
||||
#include "driverChoice.h"
|
||||
|
||||
using namespace irr;
|
||||
|
||||
/*
|
||||
We need keyboard input events to switch some parameters
|
||||
*/
|
||||
class MyEventReceiver : public IEventReceiver
|
||||
{
|
||||
public:
|
||||
// This is the one method that we have to implement
|
||||
virtual bool OnEvent(const SEvent& event)
|
||||
{
|
||||
// Remember whether each key is down or up
|
||||
if (event.EventType == irr::EET_KEY_INPUT_EVENT)
|
||||
KeyIsDown[event.KeyInput.Key] = event.KeyInput.PressedDown;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
// This is used to check whether a key is being held down
|
||||
virtual bool IsKeyDown(EKEY_CODE keyCode) const
|
||||
{
|
||||
return KeyIsDown[keyCode];
|
||||
}
|
||||
|
||||
MyEventReceiver()
|
||||
{
|
||||
for (u32 i=0; i<KEY_KEY_CODES_COUNT; ++i)
|
||||
KeyIsDown[i] = false;
|
||||
}
|
||||
|
||||
private:
|
||||
// We use this array to store the current state of each key
|
||||
bool KeyIsDown[KEY_KEY_CODES_COUNT];
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
We create an irr::IrrlichtDevice and the scene nodes. One occluder, one
|
||||
occluded. The latter is a complex sphere, which has many triangles.
|
||||
*/
|
||||
int main()
|
||||
{
|
||||
// ask user for driver
|
||||
video::E_DRIVER_TYPE driverType=driverChoiceConsole();
|
||||
if (driverType==video::EDT_COUNT)
|
||||
return 1;
|
||||
|
||||
// create device
|
||||
MyEventReceiver receiver;
|
||||
|
||||
IrrlichtDevice* device = createDevice(driverType,
|
||||
core::dimension2d<u32>(640, 480), 16, false, false, false, &receiver);
|
||||
|
||||
if (device == 0)
|
||||
return 1; // could not create selected driver.
|
||||
|
||||
video::IVideoDriver* driver = device->getVideoDriver();
|
||||
scene::ISceneManager* smgr = device->getSceneManager();
|
||||
|
||||
smgr->getGUIEnvironment()->addStaticText(L"Press Space to hide occluder.", core::recti(10,10, 200,50));
|
||||
|
||||
/*
|
||||
Create the node to be occluded. We create a sphere node with high poly count.
|
||||
*/
|
||||
scene::ISceneNode * node = smgr->addSphereSceneNode(10, 64);
|
||||
if (node)
|
||||
{
|
||||
node->setPosition(core::vector3df(0,0,60));
|
||||
node->setMaterialTexture(0, driver->getTexture("../../media/wall.bmp"));
|
||||
node->setMaterialFlag(video::EMF_LIGHTING, false);
|
||||
}
|
||||
|
||||
/*
|
||||
Now we create another node, the occluder. It's a simple plane.
|
||||
*/
|
||||
scene::ISceneNode* plane = smgr->addMeshSceneNode(smgr->addHillPlaneMesh(
|
||||
"plane", core::dimension2df(10,10), core::dimension2du(2,2)), 0, -1,
|
||||
core::vector3df(0,0,20), core::vector3df(270,0,0));
|
||||
|
||||
if (plane)
|
||||
{
|
||||
plane->setMaterialTexture(0, driver->getTexture("../../media/t351sml.jpg"));
|
||||
plane->setMaterialFlag(video::EMF_LIGHTING, false);
|
||||
plane->setMaterialFlag(video::EMF_BACK_FACE_CULLING, true);
|
||||
}
|
||||
|
||||
/*
|
||||
Here we create the occlusion query. Because we don't have a plain mesh scene node
|
||||
(ESNT_MESH or ESNT_ANIMATED_MESH), we pass the base geometry as well. Instead,
|
||||
we could also pass a simpler mesh or the bounding box. But we will use a time
|
||||
based method, where the occlusion query renders to the frame buffer and in case
|
||||
of success (occlusion), the mesh is not drawn for several frames.
|
||||
*/
|
||||
driver->addOcclusionQuery(node, ((scene::IMeshSceneNode*)node)->getMesh());
|
||||
|
||||
/*
|
||||
We have done everything, just a camera and draw it. We also write the
|
||||
current frames per second and the name of the driver to the caption of the
|
||||
window to examine the render speedup.
|
||||
We also store the time for measuring the time since the last occlusion query ran
|
||||
and store whether the node should be visible in the next frames.
|
||||
*/
|
||||
smgr->addCameraSceneNode();
|
||||
int lastFPS = -1;
|
||||
u32 timeNow = device->getTimer()->getTime();
|
||||
bool nodeVisible=true;
|
||||
|
||||
while(device->run())
|
||||
{
|
||||
plane->setVisible(!receiver.IsKeyDown(irr::KEY_SPACE));
|
||||
|
||||
driver->beginScene(true, true, video::SColor(255,113,113,133));
|
||||
/*
|
||||
First, we draw the scene, possibly without the occluded element. This is necessary
|
||||
because we need the occluder to be drawn first. You can also use several scene
|
||||
managers to collect a number of possible occluders in a separately rendered
|
||||
scene.
|
||||
*/
|
||||
node->setVisible(nodeVisible);
|
||||
smgr->drawAll();
|
||||
smgr->getGUIEnvironment()->drawAll();
|
||||
|
||||
/*
|
||||
Once in a while, here every 100 ms, we check the visibility. We run the queries,
|
||||
update the pixel value, and query the result. Since we already rendered the node
|
||||
we render the query invisible. The update is made blocking, as we need the result
|
||||
immediately. If you don't need the result immediately, e.g. because oyu have other
|
||||
things to render, you can call the update non-blocking. This gives the GPU more
|
||||
time to pass back the results without flushing the render pipeline.
|
||||
If the update was called non-blocking, the result from getOcclusionQueryResult is
|
||||
either the previous value, or 0xffffffff if no value has been generated at all, yet.
|
||||
The result is taken immediately as visibility flag for the node.
|
||||
*/
|
||||
if (device->getTimer()->getTime()-timeNow>100)
|
||||
{
|
||||
driver->runAllOcclusionQueries(false);
|
||||
driver->updateAllOcclusionQueries();
|
||||
nodeVisible=driver->getOcclusionQueryResult(node)>0;
|
||||
timeNow=device->getTimer()->getTime();
|
||||
}
|
||||
|
||||
driver->endScene();
|
||||
|
||||
int fps = driver->getFPS();
|
||||
|
||||
if (lastFPS != fps)
|
||||
{
|
||||
core::stringw tmp(L"OcclusionQuery Example [");
|
||||
tmp += driver->getName();
|
||||
tmp += L"] fps: ";
|
||||
tmp += fps;
|
||||
|
||||
device->setWindowCaption(tmp.c_str());
|
||||
lastFPS = fps;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
In the end, delete the Irrlicht device.
|
||||
*/
|
||||
device->drop();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
That's it. Compile and play around with the program.
|
||||
**/
|
||||
|
|
@ -22,6 +22,10 @@
|
|||
<Project filename="20.ManagedLights/ManagedLights.cbp" />
|
||||
<Project filename="21.Quake3Explorer/Quake3Explorer.cbp" />
|
||||
<Project filename="22.MaterialViewer/MaterialViewer.cbp" />
|
||||
<Project filename="23.SMeshHandling/SMeshHandling.cbp" />
|
||||
<Project filename="24.CursorControl/CursorControl.cbp" />
|
||||
<Project filename="25.XmlHandling/XmlHandling.cbp" />
|
||||
<Project filename="26.OcclusionQuery/OcclusionQuery.cbp" />
|
||||
<Project filename="Demo/demo.cbp" />
|
||||
<Project filename="../tools/GUIEditor/GUIEditor_gcc.cbp" />
|
||||
<Project filename="../tools/MeshConverter/MeshConverter.cbp" />
|
||||
|
|
|
|||
|
|
@ -134,6 +134,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "FontTool", "..\tools\IrrFon
|
|||
EndProject
|
||||
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "MeshConverter", "..\tools\MeshConverter\MeshConverter_vc10.vcxproj", "{E72B637E-4AA6-46F3-885F-AC67B4B470ED}"
|
||||
EndProject
|
||||
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "26.OcclusionQuery", "26.OcclusionQuery\OcclusionQuery_vc10.vcxproj", "{5CE0E2E7-879D-4152-B61D-24E7D0707B45}"
|
||||
EndProject
|
||||
Global
|
||||
GlobalSection(SolutionConfigurationPlatforms) = preSolution
|
||||
Debug|Win32 = Debug|Win32
|
||||
|
|
@ -256,6 +258,10 @@ Global
|
|||
{E72B637E-4AA6-46F3-885F-AC67B4B470ED}.Debug|Win32.Build.0 = Debug|Win32
|
||||
{E72B637E-4AA6-46F3-885F-AC67B4B470ED}.Release|Win32.ActiveCfg = Release|Win32
|
||||
{E72B637E-4AA6-46F3-885F-AC67B4B470ED}.Release|Win32.Build.0 = Release|Win32
|
||||
{5CE0E2E7-879D-4152-B61D-24E7D0707B45}.Debug|Win32.ActiveCfg = Debug|Win32
|
||||
{5CE0E2E7-879D-4152-B61D-24E7D0707B45}.Debug|Win32.Build.0 = Debug|Win32
|
||||
{5CE0E2E7-879D-4152-B61D-24E7D0707B45}.Release|Win32.ActiveCfg = Release|Win32
|
||||
{5CE0E2E7-879D-4152-B61D-24E7D0707B45}.Release|Win32.Build.0 = Release|Win32
|
||||
EndGlobalSection
|
||||
GlobalSection(SolutionProperties) = preSolution
|
||||
HideSolutionNode = FALSE
|
||||
|
|
|
|||
|
|
@ -462,7 +462,7 @@ namespace video
|
|||
|
||||
//! Create occlusion query.
|
||||
/** Use node for identification and mesh for occlusion test. */
|
||||
virtual void createOcclusionQuery(scene::ISceneNode* node,
|
||||
virtual void addOcclusionQuery(scene::ISceneNode* node,
|
||||
const scene::IMesh* mesh=0) =0;
|
||||
|
||||
//! Remove occlusion query.
|
||||
|
|
|
|||
|
|
@ -1265,12 +1265,12 @@ void CD3D9Driver::drawHardwareBuffer(SHWBufferLink *_HWBuffer)
|
|||
|
||||
//! Create occlusion query.
|
||||
/** Use node for identification and mesh for occlusion test. */
|
||||
void CD3D9Driver::createOcclusionQuery(scene::ISceneNode* node,
|
||||
void CD3D9Driver::addOcclusionQuery(scene::ISceneNode* node,
|
||||
const scene::IMesh* mesh)
|
||||
{
|
||||
if (!queryFeature(EVDF_OCCLUSION_QUERY))
|
||||
return;
|
||||
CNullDriver::createOcclusionQuery(node, mesh);
|
||||
CNullDriver::addOcclusionQuery(node, mesh);
|
||||
const s32 index = OcclusionQueries.linear_search(SOccQuery(node));
|
||||
if ((index != -1) && (OcclusionQueries[index].PID == 0))
|
||||
pID3DDevice->CreateQuery(D3DQUERYTYPE_OCCLUSION, reinterpret_cast<IDirect3DQuery9**>(&OcclusionQueries[index].PID));
|
||||
|
|
|
|||
|
|
@ -121,7 +121,7 @@ namespace video
|
|||
|
||||
//! Create occlusion query.
|
||||
/** Use node for identification and mesh for occlusion test. */
|
||||
virtual void createOcclusionQuery(scene::ISceneNode* node,
|
||||
virtual void addOcclusionQuery(scene::ISceneNode* node,
|
||||
const scene::IMesh* mesh=0);
|
||||
|
||||
//! Remove occlusion query.
|
||||
|
|
|
|||
|
|
@ -1594,7 +1594,7 @@ bool CNullDriver::isHardwareBufferRecommend(const scene::IMeshBuffer* mb)
|
|||
|
||||
//! Create occlusion query.
|
||||
/** Use node for identification and mesh for occlusion test. */
|
||||
void CNullDriver::createOcclusionQuery(scene::ISceneNode* node, const scene::IMesh* mesh)
|
||||
void CNullDriver::addOcclusionQuery(scene::ISceneNode* node, const scene::IMesh* mesh)
|
||||
{
|
||||
if (!node)
|
||||
return;
|
||||
|
|
|
|||
|
|
@ -22,6 +22,10 @@
|
|||
#include "SLight.h"
|
||||
#include "SExposedVideoData.h"
|
||||
|
||||
#ifdef _MSC_VER
|
||||
#pragma warning( disable: 4996)
|
||||
#endif
|
||||
|
||||
namespace irr
|
||||
{
|
||||
namespace io
|
||||
|
|
@ -424,7 +428,7 @@ namespace video
|
|||
|
||||
//! Create occlusion query.
|
||||
/** Use node for identification and mesh for occlusion test. */
|
||||
virtual void createOcclusionQuery(scene::ISceneNode* node,
|
||||
virtual void addOcclusionQuery(scene::ISceneNode* node,
|
||||
const scene::IMesh* mesh=0);
|
||||
|
||||
//! Remove occlusion query.
|
||||
|
|
|
|||
|
|
@ -1248,13 +1248,13 @@ void COpenGLDriver::drawHardwareBuffer(SHWBufferLink *_HWBuffer)
|
|||
|
||||
//! Create occlusion query.
|
||||
/** Use node for identification and mesh for occlusion test. */
|
||||
void COpenGLDriver::createOcclusionQuery(scene::ISceneNode* node,
|
||||
void COpenGLDriver::addOcclusionQuery(scene::ISceneNode* node,
|
||||
const scene::IMesh* mesh)
|
||||
{
|
||||
if (!queryFeature(EVDF_OCCLUSION_QUERY))
|
||||
return;
|
||||
|
||||
CNullDriver::createOcclusionQuery(node, mesh);
|
||||
CNullDriver::addOcclusionQuery(node, mesh);
|
||||
const s32 index = OcclusionQueries.linear_search(SOccQuery(node));
|
||||
if ((index != -1) && (OcclusionQueries[index].UID == 0))
|
||||
extGlGenQueries(1, reinterpret_cast<GLuint*>(&OcclusionQueries[index].UID));
|
||||
|
|
|
|||
|
|
@ -101,7 +101,7 @@ namespace video
|
|||
|
||||
//! Create occlusion query.
|
||||
/** Use node for identification and mesh for occlusion test. */
|
||||
virtual void createOcclusionQuery(scene::ISceneNode* node,
|
||||
virtual void addOcclusionQuery(scene::ISceneNode* node,
|
||||
const scene::IMesh* mesh=0);
|
||||
|
||||
//! Remove occlusion query.
|
||||
|
|
|
|||
Loading…
Reference in New Issue