#include <assert.h>
#include "c99_compat.h"
+#include "c11_compat.h"
/* Compute the size of an array */
#ifndef ARRAY_SIZE
* Unreachable macro. Useful for suppressing "control reaches end of non-void
* function" warnings.
*/
-#ifdef HAVE___BUILTIN_UNREACHABLE
+#if defined(HAVE___BUILTIN_UNREACHABLE) || __has_builtin(__builtin_unreachable)
#define unreachable(str) \
do { \
assert(!str); \
# endif
#endif
+/**
+ * UNUSED marks variables (or sometimes functions) that have to be defined,
+ * but are sometimes (or always) unused beyond that. A common case is for
+ * a function parameter to be used in some build configurations but not others.
+ * Another case is fallback vfuncs that don't do anything with their params.
+ *
+ * Note that this should not be used for identifiers used in `assert()`;
+ * see ASSERTED below.
+ */
#ifdef HAVE_FUNC_ATTRIBUTE_UNUSED
#define UNUSED __attribute__((unused))
#else
#define UNUSED
#endif
-#define MAYBE_UNUSED UNUSED
+/**
+ * Use ASSERTED to indicate that an identifier is unused outside of an `assert()`,
+ * so that assert-free builds don't get "unused variable" warnings.
+ */
+#ifdef NDEBUG
+#define ASSERTED UNUSED
+#else
+#define ASSERTED
+#endif
#ifdef HAVE_FUNC_ATTRIBUTE_WARN_UNUSED_RESULT
#define MUST_CHECK __attribute__((warn_unused_result))
*/
#define ASSERT_BITFIELD_SIZE(STRUCT, FIELD, MAXVAL) \
do { \
- MAYBE_UNUSED STRUCT s; \
+ ASSERTED STRUCT s; \
s.FIELD = (MAXVAL); \
assert((int) s.FIELD == (MAXVAL) && "Insufficient bitfield size!"); \
} while (0)
/** Compute ceiling of integer quotient of A divided by B. */
-#define DIV_ROUND_UP( A, B ) ( (A) % (B) == 0 ? (A)/(B) : (A)/(B)+1 )
+#define DIV_ROUND_UP( A, B ) ( ((A) + (B) - 1) / (B) )
/** Clamp X to [MIN,MAX]. Turn NaN into MIN, arbitrarily. */
#define CLAMP( X, MIN, MAX ) ( (X)>(MIN) ? ((X)>(MAX) ? (MAX) : (X)) : (MIN) )
+/* Syntax sugar occuring frequently in graphics code */
+#define SATURATE( X ) CLAMP(X, 0.0f, 1.0f)
+
/** Minimum of two values: */
#define MIN2( A, B ) ( (A)<(B) ? (A) : (B) )
#define BITFIELD64_RANGE(b, count) \
(BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
+/* TODO: In future we should try to move this to u_debug.h once header
+ * dependencies are reorganised to allow this.
+ */
+enum pipe_debug_type
+{
+ PIPE_DEBUG_TYPE_OUT_OF_MEMORY = 1,
+ PIPE_DEBUG_TYPE_ERROR,
+ PIPE_DEBUG_TYPE_SHADER_INFO,
+ PIPE_DEBUG_TYPE_PERF_INFO,
+ PIPE_DEBUG_TYPE_INFO,
+ PIPE_DEBUG_TYPE_FALLBACK,
+ PIPE_DEBUG_TYPE_CONFORMANCE,
+};
+
#endif /* UTIL_MACROS_H */