diff options
| author | Steven Fuller <relnev@icculus.org> | 2001-07-01 00:55:22 +0000 |
|---|---|---|
| committer | Patryk Obara <dreamer.tan@gmail.com> | 2019-08-20 02:09:04 +0200 |
| commit | 2186d5f3f95cd74a070a490d899291648d58667a (patch) | |
| tree | 55241a1afa3e1a22e0b6593a8dead0b703800f44 /src/win95/vramtime.c | |
| parent | 218ca90543758a20ac326e444ca0643174ca7384 (diff) | |
Initial revision
Diffstat (limited to 'src/win95/vramtime.c')
| -rw-r--r-- | src/win95/vramtime.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/win95/vramtime.c b/src/win95/vramtime.c new file mode 100644 index 0000000..a4fae03 --- /dev/null +++ b/src/win95/vramtime.c @@ -0,0 +1,33 @@ +#include <windows.h> + +#include "vramtime.h" + +static DWORD transition_times_matrix[][VWS_MAXSTATES] = +{ +/* from DDRELEASE */ + { 0, 20, 0, 100, 100 }, +/* from D3DTEXRELEASE */ + { 20, 0, 100, 100, 100 }, +/* from DDCREATE */ + { 0, 100, 0, 20, 100 }, +/* from D3DTEXCREATE */ + { 20, 100, 20, 20, 100 }, +/* from UNKNOWN */ + { 100, 100, 100, 100, 100 } +}; + + +void WaitForVRamReady(VRAM_WAIT_STATE vws) +{ + static DWORD old_time = 0; + static VRAM_WAIT_STATE old_vws = VWS_UNKNOWN; + + DWORD new_time; + + if (0==old_time) old_time = timeGetTime(); + + do new_time = timeGetTime(); while (new_time - old_time < transition_times_matrix[old_vws][vws]); + + old_time = new_time; + old_vws = vws; +} |