On Sun, Apr 26, 2015 at 12:27 PM, Axel Davy <axel.d...@ens.fr> wrote:
> From: Tiziano Bacocco <tizb...@gmail.com>
>
> As on wined3d and windows, when D3DCREATE_FPU_PRESERVE is not
> specified, change the fpu control word to all exceptions masked,
> single precision, round to nearest.
>
> Signed-off-by: Axel Davy <axel.d...@ens.fr>
> Signed-off-by: Tiziano Bacocco <tizb...@gmail.com>
> ---
> src/gallium/state_trackers/nine/device9.c | 31
> +++++++++++++++++++++++++++++++
> 1 file changed, 31 insertions(+)
>
> diff --git a/src/gallium/state_trackers/nine/device9.c
> b/src/gallium/state_trackers/nine/device9.c
> index 1a776a7..0bd1717 100644
> --- a/src/gallium/state_trackers/nine/device9.c
> +++ b/src/gallium/state_trackers/nine/device9.c
> @@ -41,6 +41,7 @@
>
> #include "pipe/p_screen.h"
> #include "pipe/p_context.h"
> +#include "pipe/p_config.h"
> #include "util/u_math.h"
> #include "util/u_inlines.h"
> #include "util/u_hash_table.h"
> @@ -53,6 +54,33 @@
>
> #define DBG_CHANNEL DBG_DEVICE
>
> +#if defined(PIPE_CC_GCC) && (defined(PIPE_ARCH_X86) ||
> defined(PIPE_ARCH_X86_64))
> +
> +#include <fpu_control.h>
> +
> +static void nine_setup_fpu()
> +{
> + fpu_control_t c;
> +
> + _FPU_GETCW(c);
> + /* clear the control word */
> + c &= _FPU_RESERVED;
> + /* d3d9 doc/wine tests: mask all exceptions, use single-precision
> + * and round to nearest */
> + c |= _FPU_MASK_IM | _FPU_MASK_DM | _FPU_MASK_ZM | _FPU_MASK_OM |
> + _FPU_MASK_UM | _FPU_MASK_PM | _FPU_SINGLE | _FPU_RC_NEAREST;
> + _FPU_SETCW(c);
Again... why not use the fe* functions which are in C99 and you don't
have to do these checks?
fenv_t env;
feholdexcept(&env);
fesetenv(&env);
fesetround(FE_TONEAREST);
Hmmm... not sure about the _FPU_SINGLE thing -- what does that do?
> +}
> +
> +#else
> +
> +static void nine_setup_fpu(void)
> +{
> + WARN_ONCE("FPU setup not supported on non-x86 platforms\n");
> +}
> +
> +#endif
> +
> static void
> NineDevice9_SetDefaultState( struct NineDevice9 *This, boolean is_reset )
> {
> @@ -168,6 +196,9 @@ NineDevice9_ctor( struct NineDevice9 *This,
> IDirect3D9_AddRef(This->d3d9);
> ID3DPresentGroup_AddRef(This->present);
>
> + if (!(This->params.BehaviorFlags & D3DCREATE_FPU_PRESERVE))
> + nine_setup_fpu();
> +
> This->pipe = This->screen->context_create(This->screen, NULL);
> if (!This->pipe) { return E_OUTOFMEMORY; } /* guess */
>
> --
> 2.1.0
>
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