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update hello-opencl

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- break dependency on code from src/compute
  - port away from C APIs to friendlier C++ wrapper APIs
  - add DEPS for OpenCL C++ wrapper headers so we can build on Mac
  - factor out a //third_party/opencl GN target

Change-Id: I9e37c6677cfb779021e66f2bd10f97570c450746
Reviewed-on: https://skia-review.googlesource.com/c/191281
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
This commit is contained in:
Mike Klein 2019-02-11 11:59:41 -05:00 committed by Skia Commit-Bot
parent 91f96f8005
commit 8a1f15df81
4 changed files with 77 additions and 35 deletions
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11
BUILD.gn
View File

@ -2404,16 +2404,11 @@ if (skia_enable_tools) {
if (skia_use_opencl) {
test_app("hello-opencl") {
sources = [
"src/compute/common/cl/assert_cl.c",
"src/compute/common/cl/find_cl.c",
"tools/hello-opencl.cpp",
]
include_dirs = [ "src/compute/common" ]
if (is_linux) {
libs = [ "OpenCL" ]
} else if (is_win) {
libs = [ "OpenCL.lib" ]
}
deps = [
"//third_party/opencl",
]
}
}
}

1
DEPS
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@ -21,6 +21,7 @@ deps = {
"third_party/externals/lua" : "https://skia.googlesource.com/external/github.com/lua/lua.git@v5-3-4",
"third_party/externals/microhttpd" : "https://android.googlesource.com/platform/external/libmicrohttpd@748945ec6f1c67b7efc934ab0808e1d32f2fb98d",
"third_party/externals/opencl-lib" : "https://skia.googlesource.com/external/github.com/GPUOpen-Tools/common-lib-amd-APPSDK-3.0@4e6d30e406d2e5a65e1d65e404fe6df5f772a32b",
"third_party/externals/opencl-registry" : "https://github.com/KhronosGroup/OpenCL-Registry@932ed55c85f887041291cef8019e54280c033c35",
"third_party/externals/opengl-registry" : "https://skia.googlesource.com/external/github.com/KhronosGroup/OpenGL-Registry@14b80ebeab022b2c78f84a573f01028c96075553",
"third_party/externals/piex" : "https://android.googlesource.com/platform/external/piex.git@bb217acdca1cc0c16b704669dd6f91a1b509c406",
"third_party/externals/sdl" : "https://skia.googlesource.com/third_party/sdl@5d7cfcca344034aff9327f77fc181ae3754e7a90",

15
third_party/opencl/BUILD.gn vendored Normal file
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@ -0,0 +1,15 @@
import("../third_party.gni")
third_party("opencl") {
# OpenCL C++ wrapper API, cl.hpp.
# (Some platforms only ship the C APIs, which cl.hpp builds on.)
public_include_dirs = [ "../externals/opencl-registry/api/2.1" ]
if (is_linux) {
libs = [ "OpenCL" ]
} else if (is_mac) {
libs = [ "OpenCL.framework" ]
} else if (is_win) {
libs = [ "OpenCL.lib" ]
}
}

85
tools/hello-opencl.cpp
View File

@ -7,45 +7,76 @@
// This is a simple OpenCL Hello World that tests you have a functioning OpenCL setup.
#include <CL/cl.hpp>
#include "cl.hpp"
#include <initializer_list>
#include <stdio.h>
#include <stdlib.h>
#include <string>
#include <vector>
extern "C" {
#include "cl/assert_cl.h" // for cl(), cl_ok() macros
#include "cl/find_cl.h" // for clFindIdsByName
static inline void assert_cl(cl_int rc, const char* file, int line) {
if (rc != CL_SUCCESS) {
fprintf(stderr, "%s:%d, got OpenCL error code %d\n", file,line,rc);
exit(1);
}
}
#define cl_ok(err) assert_cl(err, __FILE__, __LINE__)
int main(int argc, char** argv) {
// Find any OpenCL platform+device with these substrings.
const char* platform_match = argc > 1 ? argv[1] : "";
const char* device_match = argc > 2 ? argv[2] : "";
cl_platform_id platform_id;
cl_device_id device_id;
cl::Platform platform;
{
std::vector<cl::Platform> platforms;
cl_ok(cl::Platform::get(&platforms));
char device_name[256];
size_t device_name_len;
bool found = false;
for (cl::Platform p : platforms) {
std::string name;
cl_ok(p.getInfo(CL_PLATFORM_NAME, &name));
// clFindIdsByName will narrate what it's doing when this is set.
bool verbose = true;
fprintf(stdout, "Available platform %s\n", name.c_str());
// The cl() macro prepends cl to its argument, calls it, and asserts that it succeeded,
// printing out the file, line, and somewhat readable version of the error code on failure.
//
// It's generally used to call OpenCL APIs, but here we've written clFindIdsByName to match
// the convention, as its error conditions are just going to be passed along from OpenCL.
cl(FindIdsByName(platform_match, device_match,
&platform_id, &device_id,
sizeof(device_name), device_name, &device_name_len,
verbose));
if (name.find(platform_match) != std::string::npos) {
platform = p;
found = true;
}
}
if (!found) {
fprintf(stderr, "No platform containing '%s' found.\n", platform_match);
exit(1);
}
}
printf("picked %.*s\n", (int)device_name_len, device_name);
cl::Device device;
{
std::vector<cl::Device> devices;
cl_ok(platform.getDevices(CL_DEVICE_TYPE_ALL, &devices));
// Allan's code is all C using OpenCL's C API,
// but we can mix that freely with the C++ API found in cl.hpp.
// cl_ok() comes in handy here, which is cl() without the extra cl- prefix.
bool found = false;
for (cl::Device d : devices) {
std::string name,
version,
driver;
cl_ok(d.getInfo(CL_DEVICE_NAME, &name));
cl_ok(d.getInfo(CL_DEVICE_VERSION, &version));
cl_ok(d.getInfo(CL_DRIVER_VERSION, &driver));
cl::Device device(device_id);
fprintf(stdout, "Available device %s%s, driver version %s\n"
, version.c_str(), name.c_str(), driver.c_str());
if (name.find(device_match) != std::string::npos) {
device = d;
found = true;
}
}
if (!found) {
fprintf(stderr, "No device containing '%s' found.\n", device_match);
exit(2);
}
}
std::string name,
vendor,
@ -54,8 +85,8 @@ int main(int argc, char** argv) {
cl_ok(device.getInfo(CL_DEVICE_VENDOR, &vendor));
cl_ok(device.getInfo(CL_DEVICE_EXTENSIONS, &extensions));
printf("name %s, vendor %s, extensions:\n%s\n",
name.c_str(), vendor.c_str(), extensions.c_str());
fprintf(stdout, "Using %s, vendor %s, extensions:\n%s\n",
name.c_str(), vendor.c_str(), extensions.c_str());
std::vector<cl::Device> devices = { device };
@ -113,6 +144,6 @@ int main(int argc, char** argv) {
}
}
printf("OpenCL sez: %g x %g = %g\n", a[42], b[42], p[42]);
fprintf(stdout, "OpenCL sez: %g x %g = %g\n", a[42], b[42], p[42]);
return 0;
}