Hi,
Here is my first patch for Nouveau project: a fix for 3D software
rendering using SSE2 instruction set.
The problem is that Gallium doesn't save/restore used registers (eax,
edx, ecx, esi in my case). So I added push/pop in tgsi_emit_sse2().
My patch is quick and dirty, eg. tgsi_emit_sse2_fs() is not fixed. I
don't know Gallium enough to write better fix ;-)
Victor Stinner aka haypo
diff --git a/src/gallium/auxiliary/draw/draw_vs_sse.c b/src/gallium/auxiliary/draw/draw_vs_sse.c
index a4503c1..f11f9c6 100644
diff --git a/src/gallium/auxiliary/tgsi/exec/tgsi_sse2.c b/src/gallium/auxiliary/tgsi/exec/tgsi_sse2.c
index 4e80597..b0bf49a 100755
--- a/src/gallium/auxiliary/tgsi/exec/tgsi_sse2.c
+++ b/src/gallium/auxiliary/tgsi/exec/tgsi_sse2.c
@@ -1998,6 +1998,18 @@ emit_instruction(
case TGSI_OPCODE_RET:
case TGSI_OPCODE_END:
+ emit_pop(
+ func,
+ get_temp_base() );
+ emit_pop(
+ func,
+ get_const_base() );
+ emit_pop(
+ func,
+ get_output_base() );
+ emit_pop(
+ func,
+ get_input_base() );
#ifdef WIN32
emit_retw( func, 16 );
#else
@@ -2248,22 +2260,35 @@ tgsi_emit_sse2(
func->csr = func->store;
+ emit_push(
+ func,
+ get_input_base() );
+ emit_push(
+ func,
+ get_output_base() );
+ emit_push(
+ func,
+ get_const_base() );
+ emit_push(
+ func,
+ get_temp_base() );
+
emit_mov(
func,
get_input_base(),
- get_argument( 0 ) );
+ get_argument( 0+4 ) );
emit_mov(
func,
get_output_base(),
- get_argument( 1 ) );
+ get_argument( 1+4 ) );
emit_mov(
func,
get_const_base(),
- get_argument( 2 ) );
+ get_argument( 2+4 ) );
emit_mov(
func,
get_temp_base(),
- get_argument( 3 ) );
+ get_argument( 3+4 ) );
tgsi_parse_init( &parse, tokens );
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