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Diffstat (limited to 'src/gallium/drivers/radeonsi/si_clear.c')
-rw-r--r--src/gallium/drivers/radeonsi/si_clear.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/src/gallium/drivers/radeonsi/si_clear.c b/src/gallium/drivers/radeonsi/si_clear.c
index fa8ae5d2566..9a32977243c 100644
--- a/src/gallium/drivers/radeonsi/si_clear.c
+++ b/src/gallium/drivers/radeonsi/si_clear.c
@@ -99,18 +99,23 @@ enum pipe_format si_simplify_cb_format(enum pipe_format format)
return util_format_intensity_to_red(format);
}
-bool vi_alpha_is_on_msb(enum pipe_format format)
+bool vi_alpha_is_on_msb(struct si_screen *sscreen, enum pipe_format format)
{
format = si_simplify_cb_format(format);
+ const struct util_format_description *desc = util_format_description(format);
/* Formats with 3 channels can't have alpha. */
- if (util_format_description(format)->nr_channels == 3)
+ if (desc->nr_channels == 3)
return true; /* same as xxxA; is any value OK here? */
+ if (sscreen->info.chip_class >= GFX10 && desc->nr_channels == 1)
+ return desc->swizzle[3] == PIPE_SWIZZLE_X;
+
return si_translate_colorswap(format, false) <= 1;
}
-static bool vi_get_fast_clear_parameters(enum pipe_format base_format,
+static bool vi_get_fast_clear_parameters(struct si_screen *sscreen,
+ enum pipe_format base_format,
enum pipe_format surface_format,
const union pipe_color_union *color,
uint32_t* clear_value,
@@ -142,8 +147,8 @@ static bool vi_get_fast_clear_parameters(enum pipe_format base_format,
if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
return true; /* need ELIMINATE_FAST_CLEAR */
- bool base_alpha_is_on_msb = vi_alpha_is_on_msb(base_format);
- bool surf_alpha_is_on_msb = vi_alpha_is_on_msb(surface_format);
+ bool base_alpha_is_on_msb = vi_alpha_is_on_msb(sscreen, base_format);
+ bool surf_alpha_is_on_msb = vi_alpha_is_on_msb(sscreen, surface_format);
/* Formats with 3 channels can't have alpha. */
if (desc->nr_channels == 3)
@@ -483,7 +488,8 @@ static void si_do_fast_color_clear(struct si_context *sctx,
!tex->surface.u.legacy.level[level].dcc_fast_clear_size)
continue;
- if (!vi_get_fast_clear_parameters(tex->buffer.b.b.format,
+ if (!vi_get_fast_clear_parameters(sctx->screen,
+ tex->buffer.b.b.format,
fb->cbufs[i]->format,
color, &reset_value,
&eliminate_needed))