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>
diff --git a/src/gallium/auxiliary/indices/u_indices_gen.py b/src/gallium/auxiliary/indices/u_indices_gen.py
index e2177c3..ea53502 100644
--- a/src/gallium/auxiliary/indices/u_indices_gen.py
+++ b/src/gallium/auxiliary/indices/u_indices_gen.py
@@ -208,7 +208,7 @@
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 @@
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 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):
