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Improve the compatibility of gl_has_extension

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Fix infinite loop when running under RenderDoc

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
Yuxuan Shui 2019-07-13 19:30:26 +01:00
parent 372f4f816e
commit 8a794e0ce1
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GPG Key ID: 37C999F617EA1A47
1 changed files with 4 additions and 2 deletions
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6
src/backend/gl/gl_common.h
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@ -162,9 +162,11 @@ static inline void gl_clear_err(void) {
* Check if a GLX extension exists. * Check if a GLX extension exists.
*/ */
static inline bool gl_has_extension(const char *ext) { static inline bool gl_has_extension(const char *ext) {
for (int i = 0; ; i++) { int nexts = 0;
glGetIntegerv(GL_NUM_EXTENSIONS, &nexts);
for (int i = 0; i < nexts || !nexts; i++) {
const char *exti = (const char *)glGetStringi(GL_EXTENSIONS, (GLuint)i); const char *exti = (const char *)glGetStringi(GL_EXTENSIONS, (GLuint)i);
if (exti == 0) { if (exti == NULL) {
break; break;
} }
if (strcmp(ext, exti) == 0) { if (strcmp(ext, exti) == 0) {