diff options
| author | Marek Olšák <[email protected]> | 2016-01-15 21:58:53 +0100 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2016-01-22 15:02:40 +0100 |
| commit | 99dfeb01bd5c3e059968e934f3ec88b2fe43e3f4 (patch) | |
| tree | dbe64d398b307a3efbb1d1c13904b396b87da6e8 /src/gallium/drivers | |
| parent | f6360de8c02a52e29c2f6f65b94fd981ffd3851f (diff) | |
radeonsi: disable SPI color outputs the shader doesn't write
Reviewed-by: Nicolai Hähnle <[email protected]>
Diffstat (limited to 'src/gallium/drivers')
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_shader.h | 4 | ||||
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state_shaders.c | 12 |
2 files changed, 16 insertions, 0 deletions
diff --git a/src/gallium/drivers/radeonsi/si_shader.h b/src/gallium/drivers/radeonsi/si_shader.h index f49290afadf..50375e28ea4 100644 --- a/src/gallium/drivers/radeonsi/si_shader.h +++ b/src/gallium/drivers/radeonsi/si_shader.h @@ -213,6 +213,10 @@ struct si_shader_selector { /* PS parameters. */ unsigned db_shader_control; + /* Set 0xf or 0x0 (4 bits) per each written output. + * ANDed with spi_shader_col_format. + */ + unsigned colors_written_4bit; /* masks of "get_unique_index" bits */ uint64_t outputs_written; diff --git a/src/gallium/drivers/radeonsi/si_state_shaders.c b/src/gallium/drivers/radeonsi/si_state_shaders.c index 59aee54c3b1..79f2335b9b5 100644 --- a/src/gallium/drivers/radeonsi/si_state_shaders.c +++ b/src/gallium/drivers/radeonsi/si_state_shaders.c @@ -647,6 +647,12 @@ static inline void si_shader_selector_key(struct pipe_context *ctx, if (sctx->b.chip_class <= CIK && sctx->b.family != CHIP_HAWAII) key->ps.color_is_int8 = sctx->framebuffer.color_is_int8; + /* Disable unwritten outputs (if WRITE_ALL_CBUFS isn't enabled). */ + if (!key->ps.last_cbuf) { + key->ps.spi_shader_col_format &= sel->colors_written_4bit; + key->ps.color_is_int8 &= sel->info.colors_written; + } + if (rs) { bool is_poly = (sctx->current_rast_prim >= PIPE_PRIM_TRIANGLES && sctx->current_rast_prim <= PIPE_PRIM_POLYGON) || @@ -831,6 +837,12 @@ static void *si_create_shader_selector(struct pipe_context *ctx, } sel->esgs_itemsize = util_last_bit64(sel->outputs_written) * 16; break; + + case PIPE_SHADER_FRAGMENT: + for (i = 0; i < 8; i++) + if (sel->info.colors_written & (1 << i)) + sel->colors_written_4bit |= 0xf << (4 * i); + break; } /* DB_SHADER_CONTROL */ |