libvlkn: inital commit, basic prototype api in placeHEADmain

Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>

1 files changed, 71 insertions, 0 deletions

diff --git a/src/utils.h b/src/utils.h
new file mode 100644
index 0000000..ee0b6c6
--- /dev/null
+++ b/src/utils.h
@@ -0,0 +1,71 @@
+#ifndef _UTILS_H_
+#define _UTILS_H_
+
+#define len(X) sizeof(X) / sizeof(*X)
+
+// Yes, i know.
+#define min(X, Y) X < Y ? X : Y
+#define max(X, Y) X > Y ? X : Y
+
+#define array(type) { size_t len, cap; type *data; }
+#define array_init(array) do {\
+		(array).len = 0; \
+		(array).cap = 5; \
+		(array).data = calloc(5, sizeof(*(array).data)); \
+	} while (0)
+#define array_new(type) { \
+		.len = 0, \
+		.cap = 5, \
+		.data = calloc(5, sizeof(type)) \
+	}
+
+#define foreach(item, array) \
+	for (typeof((array).data) item = (array).data; item < (array).data + (array).len; item++)
+
+#define array_append(array, item) do { \
+		ensure_ptr((array).data, (array).len + 1, (array).cap); \
+		(array).data[(array).len++] = item; \
+	} while(0)
+
+#define ensure(var, ptr_mem, len_mem, cap_mem) ensure_ptr((var).ptr_mem, (var).len_mem, (var).cap_mem)
+#define ensure_ptr(ptr, len, cap) do { \
+		assert(ptr); \
+		if ((len) > (cap)) { \
+			(ptr) = realloc((ptr), ((cap) = (cap) * 2 > (len) ? (cap) * 2 : (len)) * sizeof(*(ptr))); \
+			if (!(ptr)) \
+				abort(); \
+		} \
+	} while (0)
+
+#define STRINGFY(X) #X
+#define STRGY(X) STRINGFY(X)
+
+
+#ifndef NDEBUG
+#	include <stdio.h>
+#	define dbglog(F) fprintf(stderr, __FILE__ ":%s:" STRGY(__LINE__) ": " F "\n", __func__)
+#	define dbglogf(F, ...) fprintf(stderr, __FILE__ ":%s:" STRGY(__LINE__) ": " F "\n", __func__, __VA_ARGS__)
+#else
+#	define dbglog(F) do { /* noop */ } while(0)
+#	define dbglogf(F, X) do { /* noop */ } while(0)
+#endif
+
+#include <vulkan/vk_enum_string_helper.h>
+#include <stdbool.h>
+
+static inline bool vlkn_check_expr(VkResult exp, const char *exp_str) {
+	if (exp == VK_SUCCESS)
+		return true;
+	dbglogf("%s failed with %s", exp_str, string_VkResult(exp));
+	return false;
+}
+
+#define vlkn_check(exp) vlkn_check_expr(exp, #exp)
+
+#include <vulkan/vulkan.h>
+struct vlkn_renderer;
+
+VkCommandBuffer begin_single_command(struct vlkn_renderer *ren);
+void end_single_command(struct vlkn_renderer *ren, VkCommandBuffer buffer);
+
+#endif