wined3d: Improve wined3d_popcount() implementation.

Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Matteo Bruni 2016-01-26 22:51:28 +01:00 committed by Alexandre Julliard
parent dba682c6f1
commit 961215b8b8
8 changed files with 62 additions and 18 deletions

33
configure vendored
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@ -16883,6 +16883,39 @@ $as_echo "#define HAVE___BUILTIN_CLZ 1" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for __builtin_popcount" >&5
$as_echo_n "checking for __builtin_popcount... " >&6; }
if ${ac_cv_have___builtin_popcount+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
return __builtin_popcount(1)
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
ac_cv_have___builtin_popcount="yes"
else
ac_cv_have___builtin_popcount="no"
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_have___builtin_popcount" >&5
$as_echo "$ac_cv_have___builtin_popcount" >&6; }
if test "$ac_cv_have___builtin_popcount" = "yes"
then
$as_echo "#define HAVE___BUILTIN_POPCOUNT 1" >>confdefs.h
fi
case $host_cpu in
*i[3456789]86*) { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we need to define __i386__" >&5

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@ -2551,6 +2551,15 @@ then
AC_DEFINE(HAVE___BUILTIN_CLZ, 1, [Define to 1 if you have the `__builtin_clz' built-in function.])
fi
dnl Check for __builtin_popcount
AC_CACHE_CHECK([for __builtin_popcount], ac_cv_have___builtin_popcount,
AC_LINK_IFELSE([AC_LANG_PROGRAM(,[[return __builtin_popcount(1)]])],
[ac_cv_have___builtin_popcount="yes"], [ac_cv_have___builtin_popcount="no"]))
if test "$ac_cv_have___builtin_popcount" = "yes"
then
AC_DEFINE(HAVE___BUILTIN_POPCOUNT, 1, [Define to 1 if you have the `__builtin_popcount' built-in function.])
fi
dnl *** check for the need to define platform-specific symbols
case $host_cpu in

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@ -798,7 +798,7 @@ static void shader_generate_arb_declarations(const struct wined3d_shader *shader
DWORD highest_constf = 0, clip_limit;
max_constantsF -= reserved_vs_const(shader_data, reg_maps, gl_info);
max_constantsF -= count_bits(reg_maps->integer_constants);
max_constantsF -= wined3d_popcount(reg_maps->integer_constants);
max_constantsF -= gl_info->reserved_arb_constants;
for (i = 0; i < shader->limits->constant_float; ++i)
@ -819,7 +819,7 @@ static void shader_generate_arb_declarations(const struct wined3d_shader *shader
else
{
unsigned int mask = ctx->cur_vs_args->clip.boolclip.clipplane_mask;
clip_limit = min(count_bits(mask), 4);
clip_limit = min(wined3d_popcount(mask), 4);
}
*num_clipplanes = min(clip_limit, max_constantsF - highest_constf - 1);
max_constantsF -= *num_clipplanes;

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@ -1685,12 +1685,12 @@ static void shader_generate_glsl_declarations(const struct wined3d_context *cont
max_constantsF = gl_info->limits.glsl_vs_float_constants - 3;
if (vs_args->clip_enabled)
max_constantsF -= gl_info->limits.clipplanes;
max_constantsF -= count_bits(reg_maps->integer_constants);
max_constantsF -= wined3d_popcount(reg_maps->integer_constants);
/* Strictly speaking a bool only uses one scalar, but the nvidia(Linux) compiler doesn't pack them properly,
* so each scalar requires a full vec4. We could work around this by packing the booleans ourselves, but
* for now take this into account when calculating the number of available constants
*/
max_constantsF -= count_bits(reg_maps->boolean_constants);
max_constantsF -= wined3d_popcount(reg_maps->boolean_constants);
/* Set by driver quirks in directx.c */
max_constantsF -= gl_info->reserved_glsl_constants;

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@ -1138,7 +1138,7 @@ static HRESULT shader_get_registers_used(struct wined3d_shader *shader, const st
}
else if (!input_signature->elements && reg_maps->input_registers)
{
unsigned int count = count_bits(reg_maps->input_registers);
unsigned int count = wined3d_popcount(reg_maps->input_registers);
struct wined3d_shader_signature_element *e;
unsigned int i;
@ -1165,7 +1165,7 @@ static HRESULT shader_get_registers_used(struct wined3d_shader *shader, const st
}
else if (reg_maps->output_registers)
{
unsigned int count = count_bits(reg_maps->output_registers);
unsigned int count = wined3d_popcount(reg_maps->output_registers);
struct wined3d_shader_signature_element *e;
if (!(output_signature->elements = HeapAlloc(GetProcessHeap(), 0, sizeof(*output_signature->elements) * count)))

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@ -4048,17 +4048,6 @@ void get_fog_start_end(const struct wined3d_context *context, const struct wined
}
}
/* This small helper function is used to convert a bitmask into the number of masked bits */
unsigned int count_bits(unsigned int mask)
{
unsigned int count;
for (count = 0; mask; ++count)
{
mask &= mask - 1;
}
return count;
}
/* Note: It's the caller's responsibility to ensure values can be expressed
* in the requested format. UNORM formats for example can only express values
* in the range 0.0f -> 1.0f. */

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@ -257,6 +257,17 @@ static inline float float_24_to_32(DWORD in)
}
}
static inline unsigned int wined3d_popcount(unsigned int x)
{
#ifdef HAVE___BUILTIN_POPCOUNT
return __builtin_popcount(x);
#else
x -= x >> 1 & 0x55555555;
x = (x & 0x33333333) + (x >> 2 & 0x33333333);
return ((x + (x >> 4)) & 0x0f0f0f0f) * 0x01010101 >> 24;
#endif
}
#define ORM_BACKBUFFER 0
#define ORM_FBO 1
@ -2930,7 +2941,6 @@ GLenum gl_primitive_type_from_d3d(enum wined3d_primitive_type primitive_type) DE
/* Math utils */
void multiply_matrix(struct wined3d_matrix *dest, const struct wined3d_matrix *src1,
const struct wined3d_matrix *src2) DECLSPEC_HIDDEN;
unsigned int count_bits(unsigned int mask) DECLSPEC_HIDDEN;
void wined3d_release_dc(HWND window, HDC dc) DECLSPEC_HIDDEN;

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@ -1311,6 +1311,9 @@
/* Define to 1 if you have the `__builtin_clz' built-in function. */
#undef HAVE___BUILTIN_CLZ
/* Define to 1 if you have the `__builtin_popcount' built-in function. */
#undef HAVE___BUILTIN_POPCOUNT
/* Define to 1 if you have the `__res_getservers' function. */
#undef HAVE___RES_GETSERVERS