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gpu-dawn: build Dawn & DirectXShaderCompiler for windows

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Helps hexops/mach#86

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2022-03-04 18:32:44 -07:00
parent bc4f6f36c5
commit 1e2c49d14e
2 changed files with 214 additions and 4 deletions
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56
gpu-dawn/src/dawn/mingw_helpers.cpp Normal file
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@ -0,0 +1,56 @@
#ifdef __MINGW32__
#include <guiddef.h>
#include <stdint.h>
#define MINGW_UUIDOF(type, spec) \
extern "C++" { \
struct __declspec(uuid(spec)) type; \
template<> const GUID &__mingw_uuidof<type>() { \
static constexpr IID __uuid_inst = guid_from_string(spec); \
return __uuid_inst; \
} \
template<> const GUID &__mingw_uuidof<type*>() { \
return __mingw_uuidof<type>(); \
} \
}
constexpr uint8_t nybble_from_hex(char c) {
return ((c >= '0' && c <= '9')
? (c - '0')
: ((c >= 'a' && c <= 'f')
? (c - 'a' + 10)
: ((c >= 'A' && c <= 'F') ? (c - 'A' + 10)
: /* Should be an error */ -1)));
}
constexpr uint8_t byte_from_hex(char c1, char c2) {
return nybble_from_hex(c1) << 4 | nybble_from_hex(c2);
}
constexpr uint8_t byte_from_hexstr(const char str[2]) {
return nybble_from_hex(str[0]) << 4 | nybble_from_hex(str[1]);
}
constexpr GUID guid_from_string(const char str[37]) {
return GUID{static_cast<uint32_t>(byte_from_hexstr(str)) << 24 |
static_cast<uint32_t>(byte_from_hexstr(str + 2)) << 16 |
static_cast<uint32_t>(byte_from_hexstr(str + 4)) << 8 |
byte_from_hexstr(str + 6),
static_cast<uint16_t>(
static_cast<uint16_t>(byte_from_hexstr(str + 9)) << 8 |
byte_from_hexstr(str + 11)),
static_cast<uint16_t>(
static_cast<uint16_t>(byte_from_hexstr(str + 14)) << 8 |
byte_from_hexstr(str + 16)),
{byte_from_hexstr(str + 19), byte_from_hexstr(str + 21),
byte_from_hexstr(str + 24), byte_from_hexstr(str + 26),
byte_from_hexstr(str + 28), byte_from_hexstr(str + 30),
byte_from_hexstr(str + 32), byte_from_hexstr(str + 34)}};
}
#endif // __MINGW32__
// The point of this helper file is to export the specializations for MINGW_UUIDOF
// below, since MinGW does not have these as part of dxguid yet (not completely up
// to date.)
MINGW_UUIDOF(IDXGraphicsAnalysis, "9f251514-9d4d-4902-9d60-18988ab7d4b5")