From: Marek Olšák <marek.ol...@amd.com>
---
src/gallium/drivers/radeonsi/si_state.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/gallium/drivers/radeonsi/si_state.c
b/src/gallium/drivers/radeonsi/si_state.c
index b7ba267..eacb1b4 100644
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -3335,20 +3335,21 @@ static void si_delete_sampler_state(struct pipe_context
*ctx, void *state)
}
/*
* Vertex elements & buffers
*/
static void *si_create_vertex_elements(struct pipe_context *ctx,
unsigned count,
const struct pipe_vertex_element
*elements)
{
+ struct si_screen *sscreen = (struct si_screen*)ctx->screen;
struct si_vertex_element *v = CALLOC_STRUCT(si_vertex_element);
bool used[SI_NUM_VERTEX_BUFFERS] = {};
int i;
assert(count <= SI_MAX_ATTRIBS);
if (!v)
return NULL;
v->count = count;
v->desc_list_byte_size = align(count * 16, SI_CPDMA_ALIGNMENT);
@@ -3374,23 +3375,26 @@ static void *si_create_vertex_elements(struct
pipe_context *ctx,
desc = util_format_description(elements[i].src_format);
first_non_void =
util_format_get_first_non_void_channel(elements[i].src_format);
data_format = si_translate_buffer_dataformat(ctx->screen, desc,
first_non_void);
num_format = si_translate_buffer_numformat(ctx->screen, desc,
first_non_void);
channel = first_non_void >= 0 ? &desc->channel[first_non_void]
: NULL;
memcpy(swizzle, desc->swizzle, sizeof(swizzle));
v->format_size[i] = desc->block.bits / 8;
/* The hardware always treats the 2-bit alpha channel as
- * unsigned, so a shader workaround is needed.
+ * unsigned, so a shader workaround is needed. The affected
+ * chips are VI and older except Stoney (GFX8.1).
*/
- if (data_format == V_008F0C_BUF_DATA_FORMAT_2_10_10_10) {
+ if (data_format == V_008F0C_BUF_DATA_FORMAT_2_10_10_10 &&
+ sscreen->b.chip_class <= VI &&
+ sscreen->b.family != CHIP_STONEY) {
if (num_format == V_008F0C_BUF_NUM_FORMAT_SNORM) {
v->fix_fetch[i] = SI_FIX_FETCH_A2_SNORM;
} else if (num_format ==
V_008F0C_BUF_NUM_FORMAT_SSCALED) {
v->fix_fetch[i] = SI_FIX_FETCH_A2_SSCALED;
} else if (num_format == V_008F0C_BUF_NUM_FORMAT_SINT) {
/* This isn't actually used in OpenGL. */
v->fix_fetch[i] = SI_FIX_FETCH_A2_SINT;
}
} else if (channel && channel->type == UTIL_FORMAT_TYPE_FIXED) {
if (desc->swizzle[3] == PIPE_SWIZZLE_1)
--
2.7.4
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