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radeonsi/gfx9: disable the 2-bit format fetch fix

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Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák 2017-02-01 02:00:05 +01:00
parent 31b1042276
commit be8eba0625
1 changed files with 6 additions and 2 deletions
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8
src/gallium/drivers/radeonsi/si_state.c
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@ -3342,6 +3342,7 @@ 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;
@ -3381,9 +3382,12 @@ static void *si_create_vertex_elements(struct pipe_context *ctx,
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) {