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[client] egl: use new util_hasGLExt helper to check extensions

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We previously used strstr, which can be prone to false positives when
the name of one extension is a substring of another extension.

This commit creates the helper function util_hasGLExt, which asserts
that the substring found in extension list is bounded by either spaces
or the beginning/end of the string.
This commit is contained in:
Quantum
2021-05-13 16:36:01 -04:00
committed by Geoffrey McRae
parent edbd6f6ade
commit f9a9953071
8 changed files with 47 additions and 7 deletions
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5
client/displayservers/X11/x11.c
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@@ -42,6 +42,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include "app.h"
#include "common/debug.h"
#include "common/time.h"
#include "util.h"
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1
@@ -901,14 +902,14 @@ static EGLDisplay x11GetEGLDisplay(void)
EGLDisplay ret;
const char *early_exts = eglQueryString(NULL, EGL_EXTENSIONS);
if (strstr(early_exts, "EGL_KHR_platform_base") != NULL &&
if (util_hasGLExt(early_exts, "EGL_KHR_platform_base") &&
g_egl_dynProcs.eglGetPlatformDisplay)
{
DEBUG_INFO("Using eglGetPlatformDisplay");
ret = g_egl_dynProcs.eglGetPlatformDisplay(EGL_PLATFORM_X11_KHR,
x11.display, NULL);
}
else if (strstr(early_exts, "EGL_EXT_platform_base") != NULL &&
else if (util_hasGLExt(early_exts, "EGL_EXT_platform_base") &&
g_egl_dynProcs.eglGetPlatformDisplayEXT)
{
DEBUG_INFO("Using eglGetPlatformDisplayEXT");