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authorDavid Snopek <dsnopek@gmail.com>2022-09-04 09:56:24 -0500
committerDavid Snopek <dsnopek@gmail.com>2022-10-21 21:00:32 -0500
commit398ee08375e1acc2354dcb8b9edbf2902a59fcf1 (patch)
tree18785661cd3200dc985d80c16079e516ccf2bc03 /thirdparty/glad/KHR
parenta8c805be2947b211ee8b881d7a8bab7cdc86e170 (diff)
Add multiview to the opengl3 driver
Diffstat (limited to 'thirdparty/glad/KHR')
-rw-r--r--thirdparty/glad/KHR/khrplatform.h27
1 files changed, 24 insertions, 3 deletions
diff --git a/thirdparty/glad/KHR/khrplatform.h b/thirdparty/glad/KHR/khrplatform.h
index dd22d92701..01646449ca 100644
--- a/thirdparty/glad/KHR/khrplatform.h
+++ b/thirdparty/glad/KHR/khrplatform.h
@@ -153,6 +153,20 @@ typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#define KHRONOS_SUPPORT_INT64 1
#define KHRONOS_SUPPORT_FLOAT 1
+/*
+ * To support platform where unsigned long cannot be used interchangeably with
+ * inptr_t (e.g. CHERI-extended ISAs), we can use the stdint.h intptr_t.
+ * Ideally, we could just use (u)intptr_t everywhere, but this could result in
+ * ABI breakage if khronos_uintptr_t is changed from unsigned long to
+ * unsigned long long or similar (this results in different C++ name mangling).
+ * To avoid changes for existing platforms, we restrict usage of intptr_t to
+ * platforms where the size of a pointer is larger than the size of long.
+ */
+#if defined(__SIZEOF_LONG__) && defined(__SIZEOF_POINTER__)
+#if __SIZEOF_POINTER__ > __SIZEOF_LONG__
+#define KHRONOS_USE_INTPTR_T
+#endif
+#endif
#elif defined(__VMS ) || defined(__sgi)
@@ -235,14 +249,21 @@ typedef unsigned short int khronos_uint16_t;
* pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
* to be the only LLP64 architecture in current use.
*/
-#ifdef _WIN64
+#ifdef KHRONOS_USE_INTPTR_T
+typedef intptr_t khronos_intptr_t;
+typedef uintptr_t khronos_uintptr_t;
+#elif defined(_WIN64)
typedef signed long long int khronos_intptr_t;
typedef unsigned long long int khronos_uintptr_t;
-typedef signed long long int khronos_ssize_t;
-typedef unsigned long long int khronos_usize_t;
#else
typedef signed long int khronos_intptr_t;
typedef unsigned long int khronos_uintptr_t;
+#endif
+
+#if defined(_WIN64)
+typedef signed long long int khronos_ssize_t;
+typedef unsigned long long int khronos_usize_t;
+#else
typedef signed long int khronos_ssize_t;
typedef unsigned long int khronos_usize_t;
#endif