SimpleOpenCLSamples/include/layer_util.hpp at b7f370a60b310d148ba57417764c9b53b06e433a · bashbaug/SimpleOpenCLSamples · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
/*
// Copyright (c) 2022-2025 Ben Ashbaugh
//
// SPDX-License-Identifier: MIT
*/
#pragma once

#include <CL/cl_layer.h>

#include <cstring>
#include <cctype>
#include <vector>

template<class T>
cl_int writeParamToMemory(
    size_t param_value_size,
    T param,
    size_t* param_value_size_ret,
    T* pointer)
{
    if (pointer != nullptr) {
        if (param_value_size < sizeof(param)) {
            return CL_INVALID_VALUE;
        }
        *pointer = param;
    }

    if (param_value_size_ret != nullptr) {
        *param_value_size_ret = sizeof(param);
    }

    return CL_SUCCESS;
}

template<class T>
cl_int writeVectorToMemory(
    size_t param_value_size,
    const std::vector<T>& param,
    size_t *param_value_size_ret,
    T* pointer )
{
    size_t  size = param.size() * sizeof(T);

    if (pointer != nullptr) {
        if (param_value_size < size) {
            return CL_INVALID_VALUE;
        }
        memcpy(pointer, param.data(), size);
    }

    if (param_value_size_ret != nullptr) {
        *param_value_size_ret = size;
    }

    return CL_SUCCESS;
}

static inline cl_int writeStringToMemory(
    size_t param_value_size,
    const char* param,
    size_t* param_value_size_ret,
    char* pointer )
{
    size_t  size = strlen(param) + 1;

    if (pointer != nullptr) {
        if (param_value_size < size) {
            return CL_INVALID_VALUE;
        }
        strcpy(pointer, param);
    }

    if (param_value_size_ret != nullptr) {
        *param_value_size_ret = size;
    }

    return CL_SUCCESS;
}

static cl_version getOpenCLVersionFromString(
    const char* str)
{
    cl_uint major = 0;
    cl_uint minor = 0;

    // The device version string has the form:
    //   OpenCL <Major>.<Minor> <Vendor Specific Info>
    const char* prefix = "OpenCL ";
    size_t sz = strlen(prefix);
    if (strlen(str) > sz &&
        strncmp(str, prefix, sz) == 0) {
        const char* check = str + sz;
        while (isdigit(check[0])) {
            major *= 10;
            major += check[0] - '0';
            ++check;
        }
        if (check[0] == '.') {
            ++check;
        }
        while (isdigit(check[0])) {
            minor *= 10;
            minor += check[0] - '0';
            ++check;
        }
    }

    return CL_MAKE_VERSION(major, minor, 0);
}

static inline bool checkStringForExtension(
    const char* str,
    const char* extensionName )
{
    bool    supported = false;

    if (extensionName && !strchr(extensionName, ' ')) {
        const char* start = str;
        while (true) {
            const char* where = strstr(start, extensionName);
            if (!where) {
                break;
            }
            const char* terminator = where + strlen(extensionName);
            if (where == start || *(where - 1) == ' ') {
                if (*terminator == ' ' || *terminator == '\0') {
                    supported = true;
                    break;
                }
            }
            start = terminator;
        }
    }

    return supported;
}