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refactor: consolidate duplicate environment variable utility functions

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Move envSizeMBOrDefault and envSizeOrDefault from 4 separate rendering
modules (character_renderer, m2_renderer, terrain_renderer, wmo_renderer)
into shared vk_utils.hpp header as inline functions. Use the most robust
version which includes overflow checking for MB-to-bytes conversion. This
eliminates 7 identical local function definitions and improves consistency
across all rendering modules.
This commit is contained in:
Kelsi 2026-03-11 11:36:06 -07:00
parent cda703b0f4
commit b3d8651db9
5 changed files with 22 additions and 65 deletions
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22
include/rendering/vk_utils.hpp
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@ -3,6 +3,8 @@
#include <vulkan/vulkan.h>
#include <vk_mem_alloc.h>
#include <cstdint>
#include <limits>
#include <cstdlib>
namespace wowee {
namespace rendering {
@ -56,5 +58,25 @@ inline bool vkCheck(VkResult result, [[maybe_unused]] const char* msg) {
return true;
}
// Environment variable utility functions
inline size_t envSizeMBOrDefault(const char* name, size_t defMb) {
const char* v = std::getenv(name);
if (!v || !*v) return defMb;
char* end = nullptr;
unsigned long long mb = std::strtoull(v, &end, 10);
if (end == v || mb == 0) return defMb;
if (mb > (std::numeric_limits<size_t>::max() / (1024ull * 1024ull))) return defMb;
return static_cast<size_t>(mb);
}
inline size_t envSizeOrDefault(const char* name, size_t defValue) {
const char* v = std::getenv(name);
if (!v || !*v) return defValue;
char* end = nullptr;
unsigned long long n = std::strtoull(v, &end, 10);
if (end == v || n == 0) return defValue;
return static_cast<size_t>(n);
}
} // namespace rendering
} // namespace wowee