add and update samples for CUDA 11.6

This commit is contained in:
Rutwik Choughule
2022-01-13 11:35:24 +05:30
parent 11de19f00c
commit 2e41896e1b
4615 changed files with 178150 additions and 181350 deletions

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{
"configurations": [
{
"name": "Linux",
"includePath": [
"${workspaceFolder}/**",
"${workspaceFolder}/../../../Common"
],
"defines": [],
"compilerPath": "/usr/local/cuda/bin/nvcc",
"cStandard": "gnu17",
"cppStandard": "gnu++14",
"intelliSenseMode": "linux-gcc-x64",
"configurationProvider": "ms-vscode.makefile-tools"
}
],
"version": 4
}

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{
"recommendations": [
"nvidia.nsight-vscode-edition",
"ms-vscode.cpptools",
"ms-vscode.makefile-tools"
]
}

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{
"configurations": [
{
"name": "CUDA C++: Launch",
"type": "cuda-gdb",
"request": "launch",
"program": "${workspaceFolder}/volumeRender"
}
]
}

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{
"version": "2.0.0",
"tasks": [
{
"label": "sample",
"type": "shell",
"command": "make dbg=1",
"problemMatcher": ["$nvcc"],
"group": {
"kind": "build",
"isDefault": true
}
}
]
}

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################################################################################
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of NVIDIA CORPORATION nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
################################################################################
#
# Makefile project only supported on Mac OS X and Linux Platforms)
#
################################################################################
# Location of the CUDA Toolkit
CUDA_PATH ?= /usr/local/cuda
##############################
# start deprecated interface #
##############################
ifeq ($(x86_64),1)
$(info WARNING - x86_64 variable has been deprecated)
$(info WARNING - please use TARGET_ARCH=x86_64 instead)
TARGET_ARCH ?= x86_64
endif
ifeq ($(ARMv7),1)
$(info WARNING - ARMv7 variable has been deprecated)
$(info WARNING - please use TARGET_ARCH=armv7l instead)
TARGET_ARCH ?= armv7l
endif
ifeq ($(aarch64),1)
$(info WARNING - aarch64 variable has been deprecated)
$(info WARNING - please use TARGET_ARCH=aarch64 instead)
TARGET_ARCH ?= aarch64
endif
ifeq ($(ppc64le),1)
$(info WARNING - ppc64le variable has been deprecated)
$(info WARNING - please use TARGET_ARCH=ppc64le instead)
TARGET_ARCH ?= ppc64le
endif
ifneq ($(GCC),)
$(info WARNING - GCC variable has been deprecated)
$(info WARNING - please use HOST_COMPILER=$(GCC) instead)
HOST_COMPILER ?= $(GCC)
endif
ifneq ($(abi),)
$(error ERROR - abi variable has been removed)
endif
############################
# end deprecated interface #
############################
# architecture
HOST_ARCH := $(shell uname -m)
TARGET_ARCH ?= $(HOST_ARCH)
ifneq (,$(filter $(TARGET_ARCH),x86_64 aarch64 sbsa ppc64le armv7l))
ifneq ($(TARGET_ARCH),$(HOST_ARCH))
ifneq (,$(filter $(TARGET_ARCH),x86_64 aarch64 sbsa ppc64le))
TARGET_SIZE := 64
else ifneq (,$(filter $(TARGET_ARCH),armv7l))
TARGET_SIZE := 32
endif
else
TARGET_SIZE := $(shell getconf LONG_BIT)
endif
else
$(error ERROR - unsupported value $(TARGET_ARCH) for TARGET_ARCH!)
endif
# sbsa and aarch64 systems look similar. Need to differentiate them at host level for now.
ifeq ($(HOST_ARCH),aarch64)
ifeq ($(CUDA_PATH)/targets/sbsa-linux,$(shell ls -1d $(CUDA_PATH)/targets/sbsa-linux 2>/dev/null))
HOST_ARCH := sbsa
TARGET_ARCH := sbsa
endif
endif
ifneq ($(TARGET_ARCH),$(HOST_ARCH))
ifeq (,$(filter $(HOST_ARCH)-$(TARGET_ARCH),aarch64-armv7l x86_64-armv7l x86_64-aarch64 x86_64-sbsa x86_64-ppc64le))
$(error ERROR - cross compiling from $(HOST_ARCH) to $(TARGET_ARCH) is not supported!)
endif
endif
# When on native aarch64 system with userspace of 32-bit, change TARGET_ARCH to armv7l
ifeq ($(HOST_ARCH)-$(TARGET_ARCH)-$(TARGET_SIZE),aarch64-aarch64-32)
TARGET_ARCH = armv7l
endif
# operating system
HOST_OS := $(shell uname -s 2>/dev/null | tr "[:upper:]" "[:lower:]")
TARGET_OS ?= $(HOST_OS)
ifeq (,$(filter $(TARGET_OS),linux darwin qnx android))
$(error ERROR - unsupported value $(TARGET_OS) for TARGET_OS!)
endif
# host compiler
ifeq ($(TARGET_OS),darwin)
ifeq ($(shell expr `xcodebuild -version | grep -i xcode | awk '{print $$2}' | cut -d'.' -f1` \>= 5),1)
HOST_COMPILER ?= clang++
endif
else ifneq ($(TARGET_ARCH),$(HOST_ARCH))
ifeq ($(HOST_ARCH)-$(TARGET_ARCH),x86_64-armv7l)
ifeq ($(TARGET_OS),linux)
HOST_COMPILER ?= arm-linux-gnueabihf-g++
else ifeq ($(TARGET_OS),qnx)
ifeq ($(QNX_HOST),)
$(error ERROR - QNX_HOST must be passed to the QNX host toolchain)
endif
ifeq ($(QNX_TARGET),)
$(error ERROR - QNX_TARGET must be passed to the QNX target toolchain)
endif
export QNX_HOST
export QNX_TARGET
HOST_COMPILER ?= $(QNX_HOST)/usr/bin/arm-unknown-nto-qnx6.6.0eabi-g++
else ifeq ($(TARGET_OS),android)
HOST_COMPILER ?= arm-linux-androideabi-g++
endif
else ifeq ($(TARGET_ARCH),aarch64)
ifeq ($(TARGET_OS), linux)
HOST_COMPILER ?= aarch64-linux-gnu-g++
else ifeq ($(TARGET_OS),qnx)
ifeq ($(QNX_HOST),)
$(error ERROR - QNX_HOST must be passed to the QNX host toolchain)
endif
ifeq ($(QNX_TARGET),)
$(error ERROR - QNX_TARGET must be passed to the QNX target toolchain)
endif
export QNX_HOST
export QNX_TARGET
HOST_COMPILER ?= $(QNX_HOST)/usr/bin/q++
else ifeq ($(TARGET_OS), android)
HOST_COMPILER ?= aarch64-linux-android-clang++
endif
else ifeq ($(TARGET_ARCH),sbsa)
HOST_COMPILER ?= aarch64-linux-gnu-g++
else ifeq ($(TARGET_ARCH),ppc64le)
HOST_COMPILER ?= powerpc64le-linux-gnu-g++
endif
endif
HOST_COMPILER ?= g++
NVCC := $(CUDA_PATH)/bin/nvcc -ccbin $(HOST_COMPILER)
# internal flags
NVCCFLAGS := -m${TARGET_SIZE}
CCFLAGS :=
LDFLAGS :=
# build flags
ifeq ($(TARGET_OS),darwin)
LDFLAGS += -rpath $(CUDA_PATH)/lib
CCFLAGS += -arch $(HOST_ARCH)
else ifeq ($(HOST_ARCH)-$(TARGET_ARCH)-$(TARGET_OS),x86_64-armv7l-linux)
LDFLAGS += --dynamic-linker=/lib/ld-linux-armhf.so.3
CCFLAGS += -mfloat-abi=hard
else ifeq ($(TARGET_OS),android)
LDFLAGS += -pie
CCFLAGS += -fpie -fpic -fexceptions
endif
ifneq ($(TARGET_ARCH),$(HOST_ARCH))
ifeq ($(TARGET_ARCH)-$(TARGET_OS),armv7l-linux)
ifneq ($(TARGET_FS),)
GCCVERSIONLTEQ46 := $(shell expr `$(HOST_COMPILER) -dumpversion` \<= 4.6)
ifeq ($(GCCVERSIONLTEQ46),1)
CCFLAGS += --sysroot=$(TARGET_FS)
endif
LDFLAGS += --sysroot=$(TARGET_FS)
LDFLAGS += -rpath-link=$(TARGET_FS)/lib
LDFLAGS += -rpath-link=$(TARGET_FS)/usr/lib
LDFLAGS += -rpath-link=$(TARGET_FS)/usr/lib/arm-linux-gnueabihf
endif
endif
ifeq ($(TARGET_ARCH)-$(TARGET_OS),aarch64-linux)
ifneq ($(TARGET_FS),)
GCCVERSIONLTEQ46 := $(shell expr `$(HOST_COMPILER) -dumpversion` \<= 4.6)
ifeq ($(GCCVERSIONLTEQ46),1)
CCFLAGS += --sysroot=$(TARGET_FS)
endif
LDFLAGS += --sysroot=$(TARGET_FS)
LDFLAGS += -rpath-link=$(TARGET_FS)/lib -L$(TARGET_FS)/lib
LDFLAGS += -rpath-link=$(TARGET_FS)/lib/aarch64-linux-gnu -L$(TARGET_FS)/lib/aarch64-linux-gnu
LDFLAGS += -rpath-link=$(TARGET_FS)/usr/lib -L$(TARGET_FS)/usr/lib
LDFLAGS += -rpath-link=$(TARGET_FS)/usr/lib/aarch64-linux-gnu -L$(TARGET_FS)/usr/lib/aarch64-linux-gnu
LDFLAGS += --unresolved-symbols=ignore-in-shared-libs
CCFLAGS += -isystem=$(TARGET_FS)/usr/include -I$(TARGET_FS)/usr/include -I$(TARGET_FS)/usr/include/libdrm
CCFLAGS += -isystem=$(TARGET_FS)/usr/include/aarch64-linux-gnu -I$(TARGET_FS)/usr/include/aarch64-linux-gnu
endif
endif
ifeq ($(TARGET_ARCH)-$(TARGET_OS),aarch64-qnx)
NVCCFLAGS += -D_QNX_SOURCE
NVCCFLAGS += --qpp-config 8.3.0,gcc_ntoaarch64le
CCFLAGS += -DWIN_INTERFACE_CUSTOM -I/usr/include/aarch64-qnx-gnu
LDFLAGS += -lsocket
LDFLAGS += -L/usr/lib/aarch64-qnx-gnu
CCFLAGS += "-Wl\,-rpath-link\,/usr/lib/aarch64-qnx-gnu"
ifdef TARGET_OVERRIDE
LDFLAGS += -lslog2
endif
ifneq ($(TARGET_FS),)
LDFLAGS += -L$(TARGET_FS)/usr/lib
CCFLAGS += "-Wl\,-rpath-link\,$(TARGET_FS)/usr/lib"
LDFLAGS += -L$(TARGET_FS)/usr/libnvidia
CCFLAGS += "-Wl\,-rpath-link\,$(TARGET_FS)/usr/libnvidia"
CCFLAGS += -I$(TARGET_FS)/../include
endif
endif
endif
ifdef TARGET_OVERRIDE # cuda toolkit targets override
NVCCFLAGS += -target-dir $(TARGET_OVERRIDE)
endif
# Install directory of different arch
CUDA_INSTALL_TARGET_DIR :=
ifeq ($(TARGET_ARCH)-$(TARGET_OS),armv7l-linux)
CUDA_INSTALL_TARGET_DIR = targets/armv7-linux-gnueabihf/
else ifeq ($(TARGET_ARCH)-$(TARGET_OS),aarch64-linux)
CUDA_INSTALL_TARGET_DIR = targets/aarch64-linux/
else ifeq ($(TARGET_ARCH)-$(TARGET_OS),sbsa-linux)
CUDA_INSTALL_TARGET_DIR = targets/sbsa-linux/
else ifeq ($(TARGET_ARCH)-$(TARGET_OS),armv7l-android)
CUDA_INSTALL_TARGET_DIR = targets/armv7-linux-androideabi/
else ifeq ($(TARGET_ARCH)-$(TARGET_OS),aarch64-android)
CUDA_INSTALL_TARGET_DIR = targets/aarch64-linux-androideabi/
else ifeq ($(TARGET_ARCH)-$(TARGET_OS),armv7l-qnx)
CUDA_INSTALL_TARGET_DIR = targets/ARMv7-linux-QNX/
else ifeq ($(TARGET_ARCH)-$(TARGET_OS),aarch64-qnx)
CUDA_INSTALL_TARGET_DIR = targets/aarch64-qnx/
else ifeq ($(TARGET_ARCH),ppc64le)
CUDA_INSTALL_TARGET_DIR = targets/ppc64le-linux/
endif
# Debug build flags
ifeq ($(dbg),1)
NVCCFLAGS += -g -G
BUILD_TYPE := debug
else
BUILD_TYPE := release
endif
ALL_CCFLAGS :=
ALL_CCFLAGS += $(NVCCFLAGS)
ALL_CCFLAGS += $(EXTRA_NVCCFLAGS)
ALL_CCFLAGS += $(addprefix -Xcompiler ,$(CCFLAGS))
ALL_CCFLAGS += $(addprefix -Xcompiler ,$(EXTRA_CCFLAGS))
SAMPLE_ENABLED := 1
# This sample is not supported on QNX
ifeq ($(TARGET_OS),qnx)
$(info >>> WARNING - volumeRender is not supported on QNX - waiving sample <<<)
SAMPLE_ENABLED := 0
endif
ALL_LDFLAGS :=
ALL_LDFLAGS += $(ALL_CCFLAGS)
ALL_LDFLAGS += $(addprefix -Xlinker ,$(LDFLAGS))
ALL_LDFLAGS += $(addprefix -Xlinker ,$(EXTRA_LDFLAGS))
# Common includes and paths for CUDA
INCLUDES := -I../../../Common
LIBRARIES :=
################################################################################
# Makefile include to help find GL Libraries
include ./findgllib.mk
# OpenGL specific libraries
ifeq ($(TARGET_OS),darwin)
# Mac OSX specific libraries and paths to include
LIBRARIES += -L/System/Library/Frameworks/OpenGL.framework/Libraries
LIBRARIES += -lGL -lGLU
ALL_LDFLAGS += -Xlinker -framework -Xlinker GLUT
else
LIBRARIES += $(GLLINK)
LIBRARIES += -lGL -lGLU -lglut
endif
# Gencode arguments
ifeq ($(TARGET_ARCH),$(filter $(TARGET_ARCH),armv7l aarch64 sbsa))
SMS ?= 53 61 70 72 75 80 86 87
else
SMS ?= 35 37 50 52 60 61 70 75 80 86
endif
ifeq ($(SMS),)
$(info >>> WARNING - no SM architectures have been specified - waiving sample <<<)
SAMPLE_ENABLED := 0
endif
ifeq ($(GENCODE_FLAGS),)
# Generate SASS code for each SM architecture listed in $(SMS)
$(foreach sm,$(SMS),$(eval GENCODE_FLAGS += -gencode arch=compute_$(sm),code=sm_$(sm)))
# Generate PTX code from the highest SM architecture in $(SMS) to guarantee forward-compatibility
HIGHEST_SM := $(lastword $(sort $(SMS)))
ifneq ($(HIGHEST_SM),)
GENCODE_FLAGS += -gencode arch=compute_$(HIGHEST_SM),code=compute_$(HIGHEST_SM)
endif
endif
ALL_CCFLAGS += --threads 0 --std=c++11
ifeq ($(SAMPLE_ENABLED),0)
EXEC ?= @echo "[@]"
endif
################################################################################
# Target rules
all: build
build: volumeRender
check.deps:
ifeq ($(SAMPLE_ENABLED),0)
@echo "Sample will be waived due to the above missing dependencies"
else
@echo "Sample is ready - all dependencies have been met"
endif
volumeRender.o:volumeRender.cpp
$(EXEC) $(NVCC) $(INCLUDES) $(ALL_CCFLAGS) $(GENCODE_FLAGS) -o $@ -c $<
volumeRender_kernel.o:volumeRender_kernel.cu
$(EXEC) $(NVCC) $(INCLUDES) $(ALL_CCFLAGS) $(GENCODE_FLAGS) -o $@ -c $<
volumeRender: volumeRender.o volumeRender_kernel.o
$(EXEC) $(NVCC) $(ALL_LDFLAGS) $(GENCODE_FLAGS) -o $@ $+ $(LIBRARIES)
$(EXEC) mkdir -p ../../../bin/$(TARGET_ARCH)/$(TARGET_OS)/$(BUILD_TYPE)
$(EXEC) cp $@ ../../../bin/$(TARGET_ARCH)/$(TARGET_OS)/$(BUILD_TYPE)
run: build
$(EXEC) ./volumeRender
testrun: build
$(EXEC) ./volumeRender -file=ref_volume.ppm
clean:
rm -f volumeRender volumeRender.o volumeRender_kernel.o
rm -rf ../../../bin/$(TARGET_ARCH)/$(TARGET_OS)/$(BUILD_TYPE)/volumeRender
clobber: clean

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE entry SYSTEM "SamplesInfo.dtd">
<entry>
<name>volumeRender</name>
<cuda_api_list>
<toolkit>cudaMemcpyToSymbol</toolkit>
<toolkit>cudaMemset</toolkit>
<toolkit>cudaFree</toolkit>
<toolkit>cudaGraphicsMapResources</toolkit>
<toolkit>cudaFreeArray</toolkit>
<toolkit>cudaGraphicsGLRegisterBuffer</toolkit>
<toolkit>cudaGraphicsResourceGetMappedPointer</toolkit>
<toolkit>cudaExtent</toolkit>
<toolkit>cudaDeviceSynchronize</toolkit>
<toolkit>cudaDestroyTextureObject</toolkit>
<toolkit>cudaPitchedPtr</toolkit>
<toolkit>cudaCreateTextureObject</toolkit>
<toolkit>cudaMalloc</toolkit>
<toolkit>cudaProfilerStop</toolkit>
<toolkit>cudaMallocArray</toolkit>
<toolkit>cudaGraphicsUnregisterResource</toolkit>
<toolkit>cudaGraphicsUnmapResources</toolkit>
<toolkit>cudaMemcpy</toolkit>
</cuda_api_list>
<description><![CDATA[This sample demonstrates basic volume rendering using 3D Textures.]]></description>
<devicecompilation>whole</devicecompilation>
<files>
<file>data\Bucky.raw</file>
<file>data\ref_volume.ppm</file>
</files>
<includepaths>
<path>./</path>
<path>../</path>
<path>../../../Common</path>
</includepaths>
<keyconcepts>
<concept level="advanced">Graphics Interop</concept>
<concept level="advanced">Image Processing</concept>
<concept level="advanced">3D Textures</concept>
</keyconcepts>
<keywords>
<keyword>Volume Rendering</keyword>
<keyword>openGL</keyword>
</keywords>
<libraries>
<library>GLU</library>
<library>GL</library>
<library framework="true" os="macosx">GLUT</library>
<library os="linux">GLEW</library>
<library os="linux">glut</library>
<library os="linux">X11</library>
</libraries>
<librarypaths>
<path arch="x86_64" os="linux">../../../common/lib/linux/x86_64</path>
<path arch="armv7l" os="linux">../../../common/lib/linux/armv7l</path>
<path os="macosx">../../../common/lib/darwin</path>
</librarypaths>
<nsight_eclipse>true</nsight_eclipse>
<primary_file>volumeRender.cpp</primary_file>
<qatests>
<qatest>-file=ref_volume.ppm</qatest>
</qatests>
<required_dependencies>
<dependency>X11</dependency>
<dependency>GL</dependency>
</required_dependencies>
<scopes>
<scope>1:CUDA Basic Topics</scope>
<scope>2:Texture</scope>
<scope>2:Graphics Interop</scope>
<scope>2:Image Processing</scope>
<scope>3:Volume Processing</scope>
</scopes>
<sm-arch>sm35</sm-arch>
<sm-arch>sm37</sm-arch>
<sm-arch>sm50</sm-arch>
<sm-arch>sm52</sm-arch>
<sm-arch>sm53</sm-arch>
<sm-arch>sm60</sm-arch>
<sm-arch>sm61</sm-arch>
<sm-arch>sm70</sm-arch>
<sm-arch>sm72</sm-arch>
<sm-arch>sm75</sm-arch>
<sm-arch>sm80</sm-arch>
<sm-arch>sm86</sm-arch>
<sm-arch>sm87</sm-arch>
<supported_envs>
<env>
<arch>x86_64</arch>
<platform>linux</platform>
</env>
<env>
<platform>windows7</platform>
</env>
<env>
<arch>x86_64</arch>
<platform>macosx</platform>
</env>
<env>
<arch>arm</arch>
</env>
<env>
<arch>sbsa</arch>
</env>
</supported_envs>
<supported_sm_architectures>
<include>all</include>
</supported_sm_architectures>
<title>Volume Rendering with 3D Textures</title>
<type>exe</type>
</entry>

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# volumeRender - Volume Rendering with 3D Textures
## Description
This sample demonstrates basic volume rendering using 3D Textures.
## Key Concepts
Graphics Interop, Image Processing, 3D Textures
## Supported SM Architectures
[SM 3.5 ](https://developer.nvidia.com/cuda-gpus) [SM 3.7 ](https://developer.nvidia.com/cuda-gpus) [SM 5.0 ](https://developer.nvidia.com/cuda-gpus) [SM 5.2 ](https://developer.nvidia.com/cuda-gpus) [SM 5.3 ](https://developer.nvidia.com/cuda-gpus) [SM 6.0 ](https://developer.nvidia.com/cuda-gpus) [SM 6.1 ](https://developer.nvidia.com/cuda-gpus) [SM 7.0 ](https://developer.nvidia.com/cuda-gpus) [SM 7.2 ](https://developer.nvidia.com/cuda-gpus) [SM 7.5 ](https://developer.nvidia.com/cuda-gpus) [SM 8.0 ](https://developer.nvidia.com/cuda-gpus) [SM 8.6 ](https://developer.nvidia.com/cuda-gpus) [SM 8.7 ](https://developer.nvidia.com/cuda-gpus)
## Supported OSes
Linux, Windows
## Supported CPU Architecture
x86_64, armv7l
## CUDA APIs involved
### [CUDA Runtime API](http://docs.nvidia.com/cuda/cuda-runtime-api/index.html)
cudaMemcpyToSymbol, cudaMemset, cudaFree, cudaGraphicsMapResources, cudaFreeArray, cudaGraphicsGLRegisterBuffer, cudaGraphicsResourceGetMappedPointer, cudaExtent, cudaDeviceSynchronize, cudaDestroyTextureObject, cudaPitchedPtr, cudaCreateTextureObject, cudaMalloc, cudaProfilerStop, cudaMallocArray, cudaGraphicsUnregisterResource, cudaGraphicsUnmapResources, cudaMemcpy
## Dependencies needed to build/run
[X11](../../README.md#x11), [GL](../../README.md#gl)
## Prerequisites
Download and install the [CUDA Toolkit 11.6](https://developer.nvidia.com/cuda-downloads) for your corresponding platform.
Make sure the dependencies mentioned in [Dependencies]() section above are installed.
## Build and Run
### Windows
The Windows samples are built using the Visual Studio IDE. Solution files (.sln) are provided for each supported version of Visual Studio, using the format:
```
*_vs<version>.sln - for Visual Studio <version>
```
Each individual sample has its own set of solution files in its directory:
To build/examine all the samples at once, the complete solution files should be used. To build/examine a single sample, the individual sample solution files should be used.
> **Note:** Some samples require that the Microsoft DirectX SDK (June 2010 or newer) be installed and that the VC++ directory paths are properly set up (**Tools > Options...**). Check DirectX Dependencies section for details."
### Linux
The Linux samples are built using makefiles. To use the makefiles, change the current directory to the sample directory you wish to build, and run make:
```
$ cd <sample_dir>
$ make
```
The samples makefiles can take advantage of certain options:
* **TARGET_ARCH=<arch>** - cross-compile targeting a specific architecture. Allowed architectures are x86_64, armv7l.
By default, TARGET_ARCH is set to HOST_ARCH. On a x86_64 machine, not setting TARGET_ARCH is the equivalent of setting TARGET_ARCH=x86_64.<br/>
`$ make TARGET_ARCH=x86_64` <br/> `$ make TARGET_ARCH=armv7l` <br/>
See [here](http://docs.nvidia.com/cuda/cuda-samples/index.html#cross-samples) for more details.
* **dbg=1** - build with debug symbols
```
$ make dbg=1
```
* **SMS="A B ..."** - override the SM architectures for which the sample will be built, where `"A B ..."` is a space-delimited list of SM architectures. For example, to generate SASS for SM 50 and SM 60, use `SMS="50 60"`.
```
$ make SMS="50 60"
```
* **HOST_COMPILER=<host_compiler>** - override the default g++ host compiler. See the [Linux Installation Guide](http://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#system-requirements) for a list of supported host compilers.
```
$ make HOST_COMPILER=g++
```
## References (for more details)

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################################################################################
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of NVIDIA CORPORATION nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
################################################################################
#
# findgllib.mk is used to find the necessary GL Libraries for specific distributions
# this is supported on Mac OSX and Linux Platforms
#
################################################################################
# Determine OS platform and unix distribution
ifeq ("$(TARGET_OS)","linux")
# first search lsb_release
DISTRO := $(shell lsb_release -i -s 2>/dev/null | tr "[:upper:]" "[:lower:]")
ifeq ("$(DISTRO)","")
# second search and parse /etc/issue
DISTRO := $(shell awk '{print $$1}' /etc/issue | tr -d "[:space:]" | sed -e "/^$$/d" | tr "[:upper:]" "[:lower:]")
# ensure data from /etc/issue is valid
ifeq (,$(filter $(DISTRO),ubuntu fedora red rhel centos suse))
DISTRO :=
endif
ifeq ("$(DISTRO)","")
# third, we can search in /etc/os-release or /etc/{distro}-release
DISTRO := $(shell awk '/ID/' /etc/*-release | sed 's/ID=//' | grep -v "VERSION" | grep -v "ID" | grep -v "DISTRIB")
endif
endif
endif
ifeq ("$(TARGET_OS)","linux")
# $(info) >> findgllib.mk -> LINUX path <<<)
# Each set of Linux Distros have different paths for where to find their OpenGL libraries reside
UBUNTU = $(shell echo $(DISTRO) | grep -i ubuntu >/dev/null 2>&1; echo $$?)
FEDORA = $(shell echo $(DISTRO) | grep -i fedora >/dev/null 2>&1; echo $$?)
RHEL = $(shell echo $(DISTRO) | grep -i 'red\|rhel' >/dev/null 2>&1; echo $$?)
CENTOS = $(shell echo $(DISTRO) | grep -i centos >/dev/null 2>&1; echo $$?)
SUSE = $(shell echo $(DISTRO) | grep -i 'suse\|sles' >/dev/null 2>&1; echo $$?)
ifeq ("$(UBUNTU)","0")
ifeq ($(HOST_ARCH)-$(TARGET_ARCH),x86_64-armv7l)
GLPATH := /usr/arm-linux-gnueabihf/lib
GLLINK := -L/usr/arm-linux-gnueabihf/lib
ifneq ($(TARGET_FS),)
GLPATH += $(TARGET_FS)/usr/lib/arm-linux-gnueabihf
GLLINK += -L$(TARGET_FS)/usr/lib/arm-linux-gnueabihf
endif
else ifeq ($(HOST_ARCH)-$(TARGET_ARCH),x86_64-aarch64)
GLPATH := /usr/aarch64-linux-gnu/lib
GLLINK := -L/usr/aarch64-linux-gnu/lib
ifneq ($(TARGET_FS),)
GLPATH += $(TARGET_FS)/usr/lib
GLPATH += $(TARGET_FS)/usr/lib/aarch64-linux-gnu
GLLINK += -L$(TARGET_FS)/usr/lib/aarch64-linux-gnu
endif
else ifeq ($(HOST_ARCH)-$(TARGET_ARCH),x86_64-ppc64le)
GLPATH := /usr/powerpc64le-linux-gnu/lib
GLLINK := -L/usr/powerpc64le-linux-gnu/lib
else
UBUNTU_PKG_NAME = $(shell which dpkg >/dev/null 2>&1 && dpkg -l 'nvidia-*' | grep '^ii' | awk '{print $$2}' | head -1)
ifneq ("$(UBUNTU_PKG_NAME)","")
GLPATH ?= /usr/lib/$(UBUNTU_PKG_NAME)
GLLINK ?= -L/usr/lib/$(UBUNTU_PKG_NAME)
endif
DFLT_PATH ?= /usr/lib
endif
endif
ifeq ("$(SUSE)","0")
GLPATH ?= /usr/X11R6/lib64
GLLINK ?= -L/usr/X11R6/lib64
DFLT_PATH ?= /usr/lib64
endif
ifeq ("$(FEDORA)","0")
GLPATH ?= /usr/lib64/nvidia
GLLINK ?= -L/usr/lib64/nvidia
DFLT_PATH ?= /usr/lib64
endif
ifeq ("$(RHEL)","0")
GLPATH ?= /usr/lib64/nvidia
GLLINK ?= -L/usr/lib64/nvidia
DFLT_PATH ?= /usr/lib64
endif
ifeq ("$(CENTOS)","0")
GLPATH ?= /usr/lib64/nvidia
GLLINK ?= -L/usr/lib64/nvidia
DFLT_PATH ?= /usr/lib64
endif
# find libGL, libGLU
GLLIB := $(shell find -L $(GLPATH) $(DFLT_PATH) -name libGL.so -print 2>/dev/null)
GLULIB := $(shell find -L $(GLPATH) $(DFLT_PATH) -name libGLU.so -print 2>/dev/null)
ifeq ("$(GLLIB)","")
$(info >>> WARNING - libGL.so not found, refer to CUDA Getting Started Guide for how to find and install them. <<<)
SAMPLE_ENABLED := 0
endif
ifeq ("$(GLULIB)","")
$(info >>> WARNING - libGLU.so not found, refer to CUDA Getting Started Guide for how to find and install them. <<<)
SAMPLE_ENABLED := 0
endif
HEADER_SEARCH_PATH ?= $(TARGET_FS)/usr/include
ifeq ($(HOST_ARCH)-$(TARGET_ARCH)-$(TARGET_OS),x86_64-armv7l-linux)
HEADER_SEARCH_PATH += /usr/arm-linux-gnueabihf/include
else ifeq ($(HOST_ARCH)-$(TARGET_ARCH)-$(TARGET_OS),x86_64-aarch64-linux)
HEADER_SEARCH_PATH += /usr/aarch64-linux-gnu/include
endif
GLHEADER := $(shell find -L $(HEADER_SEARCH_PATH) -name gl.h -print 2>/dev/null)
GLUHEADER := $(shell find -L $(HEADER_SEARCH_PATH) -name glu.h -print 2>/dev/null)
ifeq ("$(GLHEADER)","")
$(info >>> WARNING - gl.h not found, refer to CUDA Getting Started Guide for how to find and install them. <<<)
SAMPLE_ENABLED := 0
endif
ifeq ("$(GLUHEADER)","")
$(info >>> WARNING - glu.h not found, refer to CUDA Getting Started Guide for how to find and install them. <<<)
SAMPLE_ENABLED := 0
endif
else
# This would be the Mac OS X path if we had to do anything special
endif

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@@ -0,0 +1,637 @@
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
Volume rendering sample
This sample loads a 3D volume from disk and displays it using
ray marching and 3D textures.
Note - this is intended to be an example of using 3D textures
in CUDA, not an optimized volume renderer.
Changes
sgg 22/3/2010
- updated to use texture for display instead of glDrawPixels.
- changed to render from front-to-back rather than back-to-front.
*/
// OpenGL Graphics includes
#include <helper_gl.h>
#if defined(__APPLE__) || defined(MACOSX)
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
#include <GLUT/glut.h>
#ifndef glutCloseFunc
#define glutCloseFunc glutWMCloseFunc
#endif
#else
#include <GL/freeglut.h>
#endif
// CUDA Runtime, Interop, and includes
#include <cuda_runtime.h>
#include <cuda_gl_interop.h>
#include <cuda_profiler_api.h>
#include <vector_types.h>
#include <vector_functions.h>
#include <driver_functions.h>
// CUDA utilities
#include <helper_cuda.h>
// Helper functions
#include <helper_cuda.h>
#include <helper_functions.h>
#include <helper_timer.h>
typedef unsigned int uint;
typedef unsigned char uchar;
#define MAX_EPSILON_ERROR 5.00f
#define THRESHOLD 0.30f
// Define the files that are to be save and the reference images for validation
const char *sOriginal[] = {"volume.ppm", NULL};
const char *sReference[] = {"ref_volume.ppm", NULL};
const char *sSDKsample = "CUDA 3D Volume Render";
const char *volumeFilename = "Bucky.raw";
cudaExtent volumeSize = make_cudaExtent(32, 32, 32);
typedef unsigned char VolumeType;
// char *volumeFilename = "mrt16_angio.raw";
// cudaExtent volumeSize = make_cudaExtent(416, 512, 112);
// typedef unsigned short VolumeType;
uint width = 512, height = 512;
dim3 blockSize(16, 16);
dim3 gridSize;
float3 viewRotation;
float3 viewTranslation = make_float3(0.0, 0.0, -4.0f);
float invViewMatrix[12];
float density = 0.05f;
float brightness = 1.0f;
float transferOffset = 0.0f;
float transferScale = 1.0f;
bool linearFiltering = true;
GLuint pbo = 0; // OpenGL pixel buffer object
GLuint tex = 0; // OpenGL texture object
struct cudaGraphicsResource
*cuda_pbo_resource; // CUDA Graphics Resource (to transfer PBO)
StopWatchInterface *timer = 0;
// Auto-Verification Code
const int frameCheckNumber = 2;
int fpsCount = 0; // FPS count for averaging
int fpsLimit = 1; // FPS limit for sampling
int g_Index = 0;
unsigned int frameCount = 0;
int *pArgc;
char **pArgv;
#ifndef MAX
#define MAX(a, b) ((a > b) ? a : b)
#endif
extern "C" void setTextureFilterMode(bool bLinearFilter);
extern "C" void initCuda(void *h_volume, cudaExtent volumeSize);
extern "C" void freeCudaBuffers();
extern "C" void render_kernel(dim3 gridSize, dim3 blockSize, uint *d_output,
uint imageW, uint imageH, float density,
float brightness, float transferOffset,
float transferScale);
extern "C" void copyInvViewMatrix(float *invViewMatrix, size_t sizeofMatrix);
void initPixelBuffer();
void computeFPS() {
frameCount++;
fpsCount++;
if (fpsCount == fpsLimit) {
char fps[256];
float ifps = 1.f / (sdkGetAverageTimerValue(&timer) / 1000.f);
sprintf(fps, "Volume Render: %3.1f fps", ifps);
glutSetWindowTitle(fps);
fpsCount = 0;
fpsLimit = (int)MAX(1.f, ifps);
sdkResetTimer(&timer);
}
}
// render image using CUDA
void render() {
copyInvViewMatrix(invViewMatrix, sizeof(float4) * 3);
// map PBO to get CUDA device pointer
uint *d_output;
// map PBO to get CUDA device pointer
checkCudaErrors(cudaGraphicsMapResources(1, &cuda_pbo_resource, 0));
size_t num_bytes;
checkCudaErrors(cudaGraphicsResourceGetMappedPointer(
(void **)&d_output, &num_bytes, cuda_pbo_resource));
// printf("CUDA mapped PBO: May access %ld bytes\n", num_bytes);
// clear image
checkCudaErrors(cudaMemset(d_output, 0, width * height * 4));
// call CUDA kernel, writing results to PBO
render_kernel(gridSize, blockSize, d_output, width, height, density,
brightness, transferOffset, transferScale);
getLastCudaError("kernel failed");
checkCudaErrors(cudaGraphicsUnmapResources(1, &cuda_pbo_resource, 0));
}
// display results using OpenGL (called by GLUT)
void display() {
sdkStartTimer(&timer);
// use OpenGL to build view matrix
GLfloat modelView[16];
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glRotatef(-viewRotation.x, 1.0, 0.0, 0.0);
glRotatef(-viewRotation.y, 0.0, 1.0, 0.0);
glTranslatef(-viewTranslation.x, -viewTranslation.y, -viewTranslation.z);
glGetFloatv(GL_MODELVIEW_MATRIX, modelView);
glPopMatrix();
invViewMatrix[0] = modelView[0];
invViewMatrix[1] = modelView[4];
invViewMatrix[2] = modelView[8];
invViewMatrix[3] = modelView[12];
invViewMatrix[4] = modelView[1];
invViewMatrix[5] = modelView[5];
invViewMatrix[6] = modelView[9];
invViewMatrix[7] = modelView[13];
invViewMatrix[8] = modelView[2];
invViewMatrix[9] = modelView[6];
invViewMatrix[10] = modelView[10];
invViewMatrix[11] = modelView[14];
render();
// display results
glClear(GL_COLOR_BUFFER_BIT);
// draw image from PBO
glDisable(GL_DEPTH_TEST);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
#if 0
// draw using glDrawPixels (slower)
glRasterPos2i(0, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
glDrawPixels(width, height, GL_RGBA, GL_UNSIGNED_BYTE, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
#else
// draw using texture
// copy from pbo to texture
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
glBindTexture(GL_TEXTURE_2D, tex);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, GL_RGBA,
GL_UNSIGNED_BYTE, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
// draw textured quad
glEnable(GL_TEXTURE_2D);
glBegin(GL_QUADS);
glTexCoord2f(0, 0);
glVertex2f(0, 0);
glTexCoord2f(1, 0);
glVertex2f(1, 0);
glTexCoord2f(1, 1);
glVertex2f(1, 1);
glTexCoord2f(0, 1);
glVertex2f(0, 1);
glEnd();
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
#endif
glutSwapBuffers();
glutReportErrors();
sdkStopTimer(&timer);
computeFPS();
}
void idle() { glutPostRedisplay(); }
void keyboard(unsigned char key, int x, int y) {
switch (key) {
case 27:
#if defined(__APPLE__) || defined(MACOSX)
exit(EXIT_SUCCESS);
#else
glutDestroyWindow(glutGetWindow());
return;
#endif
break;
case 'f':
linearFiltering = !linearFiltering;
setTextureFilterMode(linearFiltering);
break;
case '+':
density += 0.01f;
break;
case '-':
density -= 0.01f;
break;
case ']':
brightness += 0.1f;
break;
case '[':
brightness -= 0.1f;
break;
case ';':
transferOffset += 0.01f;
break;
case '\'':
transferOffset -= 0.01f;
break;
case '.':
transferScale += 0.01f;
break;
case ',':
transferScale -= 0.01f;
break;
default:
break;
}
printf(
"density = %.2f, brightness = %.2f, transferOffset = %.2f, transferScale "
"= %.2f\n",
density, brightness, transferOffset, transferScale);
glutPostRedisplay();
}
int ox, oy;
int buttonState = 0;
void mouse(int button, int state, int x, int y) {
if (state == GLUT_DOWN) {
buttonState |= 1 << button;
} else if (state == GLUT_UP) {
buttonState = 0;
}
ox = x;
oy = y;
glutPostRedisplay();
}
void motion(int x, int y) {
float dx, dy;
dx = (float)(x - ox);
dy = (float)(y - oy);
if (buttonState == 4) {
// right = zoom
viewTranslation.z += dy / 100.0f;
} else if (buttonState == 2) {
// middle = translate
viewTranslation.x += dx / 100.0f;
viewTranslation.y -= dy / 100.0f;
} else if (buttonState == 1) {
// left = rotate
viewRotation.x += dy / 5.0f;
viewRotation.y += dx / 5.0f;
}
ox = x;
oy = y;
glutPostRedisplay();
}
int iDivUp(int a, int b) { return (a % b != 0) ? (a / b + 1) : (a / b); }
void reshape(int w, int h) {
width = w;
height = h;
initPixelBuffer();
// calculate new grid size
gridSize = dim3(iDivUp(width, blockSize.x), iDivUp(height, blockSize.y));
glViewport(0, 0, w, h);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, 1.0, 0.0, 1.0, 0.0, 1.0);
}
void cleanup() {
sdkDeleteTimer(&timer);
freeCudaBuffers();
if (pbo) {
cudaGraphicsUnregisterResource(cuda_pbo_resource);
glDeleteBuffers(1, &pbo);
glDeleteTextures(1, &tex);
}
// Calling cudaProfilerStop causes all profile data to be
// flushed before the application exits
checkCudaErrors(cudaProfilerStop());
}
void initGL(int *argc, char **argv) {
// initialize GLUT callback functions
glutInit(argc, argv);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
glutInitWindowSize(width, height);
glutCreateWindow("CUDA volume rendering");
if (!isGLVersionSupported(2, 0) ||
!areGLExtensionsSupported("GL_ARB_pixel_buffer_object")) {
printf("Required OpenGL extensions are missing.");
exit(EXIT_SUCCESS);
}
}
void initPixelBuffer() {
if (pbo) {
// unregister this buffer object from CUDA C
checkCudaErrors(cudaGraphicsUnregisterResource(cuda_pbo_resource));
// delete old buffer
glDeleteBuffers(1, &pbo);
glDeleteTextures(1, &tex);
}
// create pixel buffer object for display
glGenBuffers(1, &pbo);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, width * height * sizeof(GLubyte) * 4,
0, GL_STREAM_DRAW_ARB);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
// register this buffer object with CUDA
checkCudaErrors(cudaGraphicsGLRegisterBuffer(
&cuda_pbo_resource, pbo, cudaGraphicsMapFlagsWriteDiscard));
// create texture for display
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA,
GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glBindTexture(GL_TEXTURE_2D, 0);
}
// Load raw data from disk
void *loadRawFile(char *filename, size_t size) {
FILE *fp = fopen(filename, "rb");
if (!fp) {
fprintf(stderr, "Error opening file '%s'\n", filename);
return 0;
}
void *data = malloc(size);
size_t read = fread(data, 1, size, fp);
fclose(fp);
#if defined(_MSC_VER_)
printf("Read '%s', %Iu bytes\n", filename, read);
#else
printf("Read '%s', %zu bytes\n", filename, read);
#endif
return data;
}
void runSingleTest(const char *ref_file, const char *exec_path) {
bool bTestResult = true;
uint *d_output;
checkCudaErrors(
cudaMalloc((void **)&d_output, width * height * sizeof(uint)));
checkCudaErrors(cudaMemset(d_output, 0, width * height * sizeof(uint)));
float modelView[16] = {1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 4.0f, 1.0f};
invViewMatrix[0] = modelView[0];
invViewMatrix[1] = modelView[4];
invViewMatrix[2] = modelView[8];
invViewMatrix[3] = modelView[12];
invViewMatrix[4] = modelView[1];
invViewMatrix[5] = modelView[5];
invViewMatrix[6] = modelView[9];
invViewMatrix[7] = modelView[13];
invViewMatrix[8] = modelView[2];
invViewMatrix[9] = modelView[6];
invViewMatrix[10] = modelView[10];
invViewMatrix[11] = modelView[14];
// call CUDA kernel, writing results to PBO
copyInvViewMatrix(invViewMatrix, sizeof(float4) * 3);
// Start timer 0 and process n loops on the GPU
int nIter = 10;
for (int i = -1; i < nIter; i++) {
if (i == 0) {
cudaDeviceSynchronize();
sdkStartTimer(&timer);
}
render_kernel(gridSize, blockSize, d_output, width, height, density,
brightness, transferOffset, transferScale);
}
cudaDeviceSynchronize();
sdkStopTimer(&timer);
// Get elapsed time and throughput, then log to sample and master logs
double dAvgTime = sdkGetTimerValue(&timer) / (nIter * 1000.0);
printf(
"volumeRender, Throughput = %.4f MTexels/s, Time = %.5f s, Size = %u "
"Texels, NumDevsUsed = %u, Workgroup = %u\n",
(1.0e-6 * width * height) / dAvgTime, dAvgTime, (width * height), 1,
blockSize.x * blockSize.y);
getLastCudaError("Error: render_kernel() execution FAILED");
checkCudaErrors(cudaDeviceSynchronize());
unsigned char *h_output = (unsigned char *)malloc(width * height * 4);
checkCudaErrors(cudaMemcpy(h_output, d_output, width * height * 4,
cudaMemcpyDeviceToHost));
sdkSavePPM4ub("volume.ppm", h_output, width, height);
bTestResult =
sdkComparePPM("volume.ppm", sdkFindFilePath(ref_file, exec_path),
MAX_EPSILON_ERROR, THRESHOLD, true);
cudaFree(d_output);
free(h_output);
cleanup();
exit(bTestResult ? EXIT_SUCCESS : EXIT_FAILURE);
}
////////////////////////////////////////////////////////////////////////////////
// Program main
////////////////////////////////////////////////////////////////////////////////
int main(int argc, char **argv) {
pArgc = &argc;
pArgv = argv;
char *ref_file = NULL;
#if defined(__linux__)
setenv("DISPLAY", ":0", 0);
#endif
// start logs
printf("%s Starting...\n\n", sSDKsample);
if (checkCmdLineFlag(argc, (const char **)argv, "file")) {
getCmdLineArgumentString(argc, (const char **)argv, "file", &ref_file);
fpsLimit = frameCheckNumber;
}
if (ref_file) {
findCudaDevice(argc, (const char **)argv);
} else {
// First initialize OpenGL context, so we can properly set the GL for CUDA.
// This is necessary in order to achieve optimal performance with
// OpenGL/CUDA interop.
initGL(&argc, argv);
findCudaDevice(argc, (const char **)argv);
}
// parse arguments
char *filename;
if (getCmdLineArgumentString(argc, (const char **)argv, "volume",
&filename)) {
volumeFilename = filename;
}
int n;
if (checkCmdLineFlag(argc, (const char **)argv, "size")) {
n = getCmdLineArgumentInt(argc, (const char **)argv, "size");
volumeSize.width = volumeSize.height = volumeSize.depth = n;
}
if (checkCmdLineFlag(argc, (const char **)argv, "xsize")) {
n = getCmdLineArgumentInt(argc, (const char **)argv, "xsize");
volumeSize.width = n;
}
if (checkCmdLineFlag(argc, (const char **)argv, "ysize")) {
n = getCmdLineArgumentInt(argc, (const char **)argv, "ysize");
volumeSize.height = n;
}
if (checkCmdLineFlag(argc, (const char **)argv, "zsize")) {
n = getCmdLineArgumentInt(argc, (const char **)argv, "zsize");
volumeSize.depth = n;
}
// load volume data
char *path = sdkFindFilePath(volumeFilename, argv[0]);
if (path == 0) {
printf("Error finding file '%s'\n", volumeFilename);
exit(EXIT_FAILURE);
}
size_t size = volumeSize.width * volumeSize.height * volumeSize.depth *
sizeof(VolumeType);
void *h_volume = loadRawFile(path, size);
initCuda(h_volume, volumeSize);
free(h_volume);
sdkCreateTimer(&timer);
printf(
"Press '+' and '-' to change density (0.01 increments)\n"
" ']' and '[' to change brightness\n"
" ';' and ''' to modify transfer function offset\n"
" '.' and ',' to modify transfer function scale\n\n");
// calculate new grid size
gridSize = dim3(iDivUp(width, blockSize.x), iDivUp(height, blockSize.y));
if (ref_file) {
runSingleTest(ref_file, argv[0]);
} else {
// This is the normal rendering path for VolumeRender
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutReshapeFunc(reshape);
glutIdleFunc(idle);
initPixelBuffer();
#if defined(__APPLE__) || defined(MACOSX)
atexit(cleanup);
#else
glutCloseFunc(cleanup);
#endif
glutMainLoop();
}
}

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@@ -0,0 +1,311 @@
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// Simple 3D volume renderer
#ifndef _VOLUMERENDER_KERNEL_CU_
#define _VOLUMERENDER_KERNEL_CU_
#include <helper_cuda.h>
#include <helper_math.h>
typedef unsigned int uint;
typedef unsigned char uchar;
cudaArray *d_volumeArray = 0;
cudaArray *d_transferFuncArray;
typedef unsigned char VolumeType;
// typedef unsigned short VolumeType;
cudaTextureObject_t texObject; // For 3D texture
cudaTextureObject_t transferTex; // For 1D transfer function texture
typedef struct { float4 m[3]; } float3x4;
__constant__ float3x4 c_invViewMatrix; // inverse view matrix
struct Ray {
float3 o; // origin
float3 d; // direction
};
// intersect ray with a box
// http://www.siggraph.org/education/materials/HyperGraph/raytrace/rtinter3.htm
__device__ int intersectBox(Ray r, float3 boxmin, float3 boxmax, float *tnear,
float *tfar) {
// compute intersection of ray with all six bbox planes
float3 invR = make_float3(1.0f) / r.d;
float3 tbot = invR * (boxmin - r.o);
float3 ttop = invR * (boxmax - r.o);
// re-order intersections to find smallest and largest on each axis
float3 tmin = fminf(ttop, tbot);
float3 tmax = fmaxf(ttop, tbot);
// find the largest tmin and the smallest tmax
float largest_tmin = fmaxf(fmaxf(tmin.x, tmin.y), fmaxf(tmin.x, tmin.z));
float smallest_tmax = fminf(fminf(tmax.x, tmax.y), fminf(tmax.x, tmax.z));
*tnear = largest_tmin;
*tfar = smallest_tmax;
return smallest_tmax > largest_tmin;
}
// transform vector by matrix (no translation)
__device__ float3 mul(const float3x4 &M, const float3 &v) {
float3 r;
r.x = dot(v, make_float3(M.m[0]));
r.y = dot(v, make_float3(M.m[1]));
r.z = dot(v, make_float3(M.m[2]));
return r;
}
// transform vector by matrix with translation
__device__ float4 mul(const float3x4 &M, const float4 &v) {
float4 r;
r.x = dot(v, M.m[0]);
r.y = dot(v, M.m[1]);
r.z = dot(v, M.m[2]);
r.w = 1.0f;
return r;
}
__device__ uint rgbaFloatToInt(float4 rgba) {
rgba.x = __saturatef(rgba.x); // clamp to [0.0, 1.0]
rgba.y = __saturatef(rgba.y);
rgba.z = __saturatef(rgba.z);
rgba.w = __saturatef(rgba.w);
return (uint(rgba.w * 255) << 24) | (uint(rgba.z * 255) << 16) |
(uint(rgba.y * 255) << 8) | uint(rgba.x * 255);
}
__global__ void d_render(uint *d_output, uint imageW, uint imageH,
float density, float brightness, float transferOffset,
float transferScale, cudaTextureObject_t tex,
cudaTextureObject_t transferTex) {
const int maxSteps = 500;
const float tstep = 0.01f;
const float opacityThreshold = 0.95f;
const float3 boxMin = make_float3(-1.0f, -1.0f, -1.0f);
const float3 boxMax = make_float3(1.0f, 1.0f, 1.0f);
uint x = blockIdx.x * blockDim.x + threadIdx.x;
uint y = blockIdx.y * blockDim.y + threadIdx.y;
if ((x >= imageW) || (y >= imageH)) return;
float u = (x / (float)imageW) * 2.0f - 1.0f;
float v = (y / (float)imageH) * 2.0f - 1.0f;
// calculate eye ray in world space
Ray eyeRay;
eyeRay.o =
make_float3(mul(c_invViewMatrix, make_float4(0.0f, 0.0f, 0.0f, 1.0f)));
eyeRay.d = normalize(make_float3(u, v, -2.0f));
eyeRay.d = mul(c_invViewMatrix, eyeRay.d);
// find intersection with box
float tnear, tfar;
int hit = intersectBox(eyeRay, boxMin, boxMax, &tnear, &tfar);
if (!hit) return;
if (tnear < 0.0f) tnear = 0.0f; // clamp to near plane
// march along ray from front to back, accumulating color
float4 sum = make_float4(0.0f);
float t = tnear;
float3 pos = eyeRay.o + eyeRay.d * tnear;
float3 step = eyeRay.d * tstep;
for (int i = 0; i < maxSteps; i++) {
// read from 3D texture
// remap position to [0, 1] coordinates
float sample = tex3D<float>(tex, pos.x * 0.5f + 0.5f, pos.y * 0.5f + 0.5f,
pos.z * 0.5f + 0.5f);
// sample *= 64.0f; // scale for 10-bit data
// lookup in transfer function texture
float4 col =
tex1D<float4>(transferTex, (sample - transferOffset) * transferScale);
col.w *= density;
// "under" operator for back-to-front blending
// sum = lerp(sum, col, col.w);
// pre-multiply alpha
col.x *= col.w;
col.y *= col.w;
col.z *= col.w;
// "over" operator for front-to-back blending
sum = sum + col * (1.0f - sum.w);
// exit early if opaque
if (sum.w > opacityThreshold) break;
t += tstep;
if (t > tfar) break;
pos += step;
}
sum *= brightness;
// write output color
d_output[y * imageW + x] = rgbaFloatToInt(sum);
}
extern "C" void setTextureFilterMode(bool bLinearFilter) {
if (texObject) {
checkCudaErrors(cudaDestroyTextureObject(texObject));
}
cudaResourceDesc texRes;
memset(&texRes, 0, sizeof(cudaResourceDesc));
texRes.resType = cudaResourceTypeArray;
texRes.res.array.array = d_volumeArray;
cudaTextureDesc texDescr;
memset(&texDescr, 0, sizeof(cudaTextureDesc));
texDescr.normalizedCoords = true;
texDescr.filterMode =
bLinearFilter ? cudaFilterModeLinear : cudaFilterModePoint;
texDescr.addressMode[0] = cudaAddressModeWrap;
texDescr.addressMode[1] = cudaAddressModeWrap;
texDescr.addressMode[2] = cudaAddressModeWrap;
texDescr.readMode = cudaReadModeNormalizedFloat;
checkCudaErrors(
cudaCreateTextureObject(&texObject, &texRes, &texDescr, NULL));
}
extern "C" void initCuda(void *h_volume, cudaExtent volumeSize) {
// create 3D array
cudaChannelFormatDesc channelDesc = cudaCreateChannelDesc<VolumeType>();
checkCudaErrors(cudaMalloc3DArray(&d_volumeArray, &channelDesc, volumeSize));
// copy data to 3D array
cudaMemcpy3DParms copyParams = {0};
copyParams.srcPtr =
make_cudaPitchedPtr(h_volume, volumeSize.width * sizeof(VolumeType),
volumeSize.width, volumeSize.height);
copyParams.dstArray = d_volumeArray;
copyParams.extent = volumeSize;
copyParams.kind = cudaMemcpyHostToDevice;
checkCudaErrors(cudaMemcpy3D(&copyParams));
cudaResourceDesc texRes;
memset(&texRes, 0, sizeof(cudaResourceDesc));
texRes.resType = cudaResourceTypeArray;
texRes.res.array.array = d_volumeArray;
cudaTextureDesc texDescr;
memset(&texDescr, 0, sizeof(cudaTextureDesc));
texDescr.normalizedCoords =
true; // access with normalized texture coordinates
texDescr.filterMode = cudaFilterModeLinear; // linear interpolation
texDescr.addressMode[0] = cudaAddressModeClamp; // clamp texture coordinates
texDescr.addressMode[1] = cudaAddressModeClamp;
texDescr.addressMode[2] = cudaAddressModeClamp;
texDescr.readMode = cudaReadModeNormalizedFloat;
checkCudaErrors(
cudaCreateTextureObject(&texObject, &texRes, &texDescr, NULL));
// create transfer function texture
float4 transferFunc[] = {
{ 0.0, 0.0, 0.0, 0.0, },
{ 1.0, 0.0, 0.0, 1.0, },
{ 1.0, 0.5, 0.0, 1.0, },
{ 1.0, 1.0, 0.0, 1.0, },
{ 0.0, 1.0, 0.0, 1.0, },
{ 0.0, 1.0, 1.0, 1.0, },
{ 0.0, 0.0, 1.0, 1.0, },
{ 1.0, 0.0, 1.0, 1.0, },
{ 0.0, 0.0, 0.0, 0.0, },
};
cudaChannelFormatDesc channelDesc2 = cudaCreateChannelDesc<float4>();
cudaArray *d_transferFuncArray;
checkCudaErrors(cudaMallocArray(&d_transferFuncArray, &channelDesc2,
sizeof(transferFunc) / sizeof(float4), 1));
checkCudaErrors(cudaMemcpy2DToArray(d_transferFuncArray, 0, 0, transferFunc,
0, sizeof(transferFunc), 1,
cudaMemcpyHostToDevice));
memset(&texRes, 0, sizeof(cudaResourceDesc));
texRes.resType = cudaResourceTypeArray;
texRes.res.array.array = d_transferFuncArray;
memset(&texDescr, 0, sizeof(cudaTextureDesc));
texDescr.normalizedCoords =
true; // access with normalized texture coordinates
texDescr.filterMode = cudaFilterModeLinear;
texDescr.addressMode[0] = cudaAddressModeClamp; // wrap texture coordinates
texDescr.readMode = cudaReadModeElementType;
checkCudaErrors(
cudaCreateTextureObject(&transferTex, &texRes, &texDescr, NULL));
}
extern "C" void freeCudaBuffers() {
checkCudaErrors(cudaDestroyTextureObject(texObject));
checkCudaErrors(cudaDestroyTextureObject(transferTex));
checkCudaErrors(cudaFreeArray(d_volumeArray));
checkCudaErrors(cudaFreeArray(d_transferFuncArray));
}
extern "C" void render_kernel(dim3 gridSize, dim3 blockSize, uint *d_output,
uint imageW, uint imageH, float density,
float brightness, float transferOffset,
float transferScale) {
d_render<<<gridSize, blockSize>>>(d_output, imageW, imageH, density,
brightness, transferOffset, transferScale,
texObject, transferTex);
}
extern "C" void copyInvViewMatrix(float *invViewMatrix, size_t sizeofMatrix) {
checkCudaErrors(
cudaMemcpyToSymbol(c_invViewMatrix, invViewMatrix, sizeofMatrix));
}
#endif // #ifndef _VOLUMERENDER_KERNEL_CU_

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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 2017
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Microsoft Visual Studio Solution File, Format Version 12.00
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Microsoft Visual Studio Solution File, Format Version 12.00
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