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vkd3d-shader: Use a hash to build the filename when dumping shaders.

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This way the same shader is always dumped to the same path and when
launching the same program over and over we avoid both creating new
copies of the same file each time and overwriting different dumped
shaders.
This commit is contained in:
Giovanni Mascellani
2024-08-12 15:17:30 +02:00
committed by Henri Verbeet
parent 0e72aba0bc
commit 1a0d6a4db4
Notes: Henri Verbeet 2024-08-29 19:26:26 +02:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/992
4 changed files with 70 additions and 26 deletions
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20
libs/vkd3d-shader/vkd3d_shader_main.c
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@@ -448,17 +448,27 @@ void set_string(struct vkd3d_bytecode_buffer *buffer, size_t offset, const char
static void vkd3d_shader_dump_blob(const char *path, const char *profile,
const char *suffix, const void *data, size_t size)
{
static unsigned int shader_id = 0;
static const char hexadecimal_digits[] = "0123456789abcdef";
char str_checksum[33];
uint8_t checksum[16];
char filename[1024];
unsigned int id;
unsigned int i;
FILE *f;
id = vkd3d_atomic_increment_u32(&shader_id) - 1;
vkd3d_compute_md5(data, size, (uint32_t *)checksum, VKD3D_MD5_STANDARD);
for (i = 0; i < ARRAY_SIZE(checksum); ++i)
{
str_checksum[2 * i] = hexadecimal_digits[checksum[i] >> 4];
str_checksum[2 * i + 1] = hexadecimal_digits[checksum[i] & 0xf];
}
str_checksum[32] = '\0';
if (profile)
snprintf(filename, ARRAY_SIZE(filename), "%s/vkd3d-shader-%u-%s.%s", path, id, profile, suffix);
snprintf(filename, ARRAY_SIZE(filename), "%s/vkd3d-shader-%s-%s.%s", path, str_checksum, profile, suffix);
else
snprintf(filename, ARRAY_SIZE(filename), "%s/vkd3d-shader-%u.%s", path, id, suffix);
snprintf(filename, ARRAY_SIZE(filename), "%s/vkd3d-shader-%s.%s", path, str_checksum, suffix);
TRACE("Dumping shader to \"%s\".\n", filename);
if ((f = fopen(filename, "wb")))
{
if (fwrite(data, 1, size, f) != size)