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r300g: Clean up bitcounting function. 

I didn't see this in u_math; surely somebody else has this wheel
reinvented elsewhere.
This commit is contained in:
Corbin Simpson 2009-11-20 14:10:59 -08:00
parent 6a3eb1f91b
commit 06ec216d19
1 changed files with 10 additions and 5 deletions
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15
src/gallium/drivers/r300/r300_emit.c
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@ -690,14 +690,19 @@ void r300_emit_vertex_format_state(struct r300_context* r300)
END_CS;
}
/* XXX This should probably go to util ... */
/* XXX This should go to util ... */
/* Return the number of bits set in the given number. */
static unsigned bitcount(unsigned n)
{
unsigned bits;
for (bits = 0; n > 0; n = n >> 1) {
bits += n & 1;
unsigned bits = 0;
while (n) {
if (n & 1) {
bits++;
}
n >>= 1;
}
return bits;
}
@ -714,7 +719,7 @@ void r300_emit_vertex_program_code(struct r300_context* r300,
int temp_count = MAX2(code->num_temporaries, 1);
int pvs_num_slots = MIN3(vtx_mem_size / input_count,
vtx_mem_size / output_count, 10);
int pvs_num_controllers = MIN2(6, vtx_mem_size / temp_count);
int pvs_num_controllers = MIN2(vtx_mem_size / temp_count, 6);
CS_LOCALS(r300);