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gallium/indices: implement prim-restart for line-loops 

Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5976>
This commit is contained in:
Erik Faye-Lund 2020-06-22 18:38:03 +02:00 committed by Marge Bot
parent ac96225eb0
commit 3aa4f64e8d
1 changed files with 17 additions and 2 deletions
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19
src/gallium/auxiliary/indices/u_indices_gen.py
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@ -208,7 +208,7 @@ def preamble(intype, outtype, inpv, outpv, pr, prim):
def postamble():
print('}')
def prim_restart(in_verts, out_verts, out_prims):
def prim_restart(in_verts, out_verts, out_prims, close_func = None):
print('restart:')
print(' if (i + ' + str(in_verts) + ' > in_nr) {')
for i in range(out_prims):
@ -219,6 +219,10 @@ def prim_restart(in_verts, out_verts, out_prims):
for i in range(in_verts):
print(' if (in[i + ' + str(i) + '] == restart_index) {')
print(' i += ' + str(i + 1) + ';')
if close_func is not None:
close_func(i)
print(' goto restart;')
print(' }')
@ -245,10 +249,21 @@ def linestrip(intype, outtype, inpv, outpv, pr):
def lineloop(intype, outtype, inpv, outpv, pr):
preamble(intype, outtype, inpv, outpv, pr, prim='lineloop')
print(' unsigned end = start;')
print(' for (i = start, j = 0; j < out_nr - 2; j+=2, i++) { ')
if pr == PRENABLE:
def close_func(index):
do_line( intype, outtype, 'out+j', 'end', 'start', inpv, outpv )
print(' start = i;')
print(' end = start;')
print(' j += 2;')
prim_restart(2, 2, 1, close_func)
do_line( intype, outtype, 'out+j', 'i', 'i+1', inpv, outpv );
print(' end = i+1;')
print(' }')
do_line( intype, outtype, 'out+j', 'i', 'start', inpv, outpv );
do_line( intype, outtype, 'out+j', 'end', 'start', inpv, outpv );
postamble()
def tris(intype, outtype, inpv, outpv, pr):