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lima: implement polygon offset

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Fixes some of dEQP-GLES2.functional.polygon_offset.* tests and shadows in Q3A.

Reviewed-by: Qiang Yu <yuq825@gmail.com>
Tested-by: Andreas Baierl <ichgeh@imkreisrum.de>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
This commit is contained in:
Vasily Khoruzhick 2020-01-10 19:48:11 -08:00
parent b936b1f9b4
commit 8a421135fa
1 changed files with 9 additions and 14 deletions
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23
src/gallium/drivers/lima/lima_draw.c
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@ -1030,29 +1030,24 @@ lima_stencil_op(enum pipe_stencil_op pipe)
}
#endif
static int
static unsigned
lima_calculate_depth_test(struct pipe_depth_state *depth, struct pipe_rasterizer_state *rst)
{
int offset_scale = 0, offset_units = 0;
enum pipe_compare_func func = (depth->enabled ? depth->func : PIPE_FUNC_ALWAYS);
int offset_scale = 0;
//TODO: implement polygon offset
#if 0
if (rst->offset_scale < -32)
offset_scale = -32;
else if (rst->offset_scale > 31)
offset_scale = 31;
else
offset_scale = rst->offset_scale * 4;
offset_scale = CLAMP(rst->offset_scale * 4, -128, 127);
if (offset_scale < 0)
offset_scale = 0x100 + offset_scale;
#endif
offset_scale += 0x100;
offset_units = CLAMP(rst->offset_units * 2, -128, 127);
if (offset_units < 0)
offset_units += 0x100;
return (depth->enabled && depth->writemask) |
((int)func << 1) |
(offset_scale << 16) |
(offset_units << 24) |
0x30; /* find out what is this */
}