Module: Mesa Branch: master Commit: 06ec216d191e160494dd0a922ab0395418a78402 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=06ec216d191e160494dd0a922ab0395418a78402
Author: Corbin Simpson <[email protected]> Date: Fri Nov 20 14:10:59 2009 -0800 r300g: Clean up bitcounting function. I didn't see this in u_math; surely somebody else has this wheel reinvented elsewhere. --- src/gallium/drivers/r300/r300_emit.c | 15 ++++++++++----- 1 files changed, 10 insertions(+), 5 deletions(-) diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c index 4cd5074..c50c989 100644 --- a/src/gallium/drivers/r300/r300_emit.c +++ b/src/gallium/drivers/r300/r300_emit.c @@ -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); _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
