diff options
| -rw-r--r-- | src/gallium/drivers/freedreno/freedreno_resource.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/gallium/drivers/freedreno/freedreno_resource.c b/src/gallium/drivers/freedreno/freedreno_resource.c index bd7be94c859..252fd84b456 100644 --- a/src/gallium/drivers/freedreno/freedreno_resource.c +++ b/src/gallium/drivers/freedreno/freedreno_resource.c @@ -1194,6 +1194,50 @@ fd_resource_screen_init(struct pipe_screen *pscreen) screen->setup_slices = fd_setup_slices; } +static void +fd_get_sample_position(struct pipe_context *context, + unsigned sample_count, unsigned sample_index, + float *pos_out) +{ + /* The following is copied from nouveau/nv50 except for position + * values, which are taken from blob driver */ + static const uint8_t pos1[1][2] = { { 0x8, 0x8 } }; + static const uint8_t pos2[2][2] = { + { 0xc, 0xc }, { 0x4, 0x4 } }; + static const uint8_t pos4[4][2] = { + { 0x6, 0x2 }, { 0xe, 0x6 }, + { 0x2, 0xa }, { 0xa, 0xe } }; + /* TODO needs to be verified on supported hw */ + static const uint8_t pos8[8][2] = { + { 0x9, 0x5 }, { 0x7, 0xb }, + { 0xd, 0x9 }, { 0x5, 0x3 }, + { 0x3, 0xd }, { 0x1, 0x7 }, + { 0xb, 0xf }, { 0xf, 0x1 } }; + + const uint8_t (*ptr)[2]; + + switch (sample_count) { + case 1: + ptr = pos1; + break; + case 2: + ptr = pos2; + break; + case 4: + ptr = pos4; + break; + case 8: + ptr = pos8; + break; + default: + assert(0); + return; + } + + pos_out[0] = ptr[sample_index][0] / 16.0f; + pos_out[1] = ptr[sample_index][1] / 16.0f; +} + void fd_resource_context_init(struct pipe_context *pctx) { @@ -1208,4 +1252,5 @@ fd_resource_context_init(struct pipe_context *pctx) pctx->blit = fd_blit; pctx->flush_resource = fd_flush_resource; pctx->invalidate_resource = fd_invalidate_resource; + pctx->get_sample_position = fd_get_sample_position; } |