diff options
| -rw-r--r-- | src/gallium/drivers/nouveau/nv50/nv50_context.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_context.c b/src/gallium/drivers/nouveau/nv50/nv50_context.c index 10e8b47b38e..ae1fcc568db 100644 --- a/src/gallium/drivers/nouveau/nv50/nv50_context.c +++ b/src/gallium/drivers/nouveau/nv50/nv50_context.c @@ -202,6 +202,10 @@ nv50_invalidate_resource_storage(struct nouveau_context *ctx, return ref; } +static void +nv50_context_get_sample_position(struct pipe_context *, unsigned, unsigned, + float *); + struct pipe_context * nv50_create(struct pipe_screen *pscreen, void *priv) { @@ -245,6 +249,7 @@ nv50_create(struct pipe_screen *pscreen, void *priv) pipe->flush = nv50_flush; pipe->texture_barrier = nv50_texture_barrier; + pipe->get_sample_position = nv50_context_get_sample_position; if (!screen->cur_ctx) { screen->cur_ctx = nv50; @@ -321,3 +326,44 @@ nv50_bufctx_fence(struct nouveau_bufctx *bufctx, boolean on_flush) nv50_resource_validate(res, (unsigned)ref->priv_data); } } + +static void +nv50_context_get_sample_position(struct pipe_context *pipe, + unsigned sample_count, unsigned sample_index, + float *xy) +{ + static const uint8_t ms1[1][2] = { { 0x8, 0x8 } }; + static const uint8_t ms2[2][2] = { + { 0x4, 0x4 }, { 0xc, 0xc } }; /* surface coords (0,0), (1,0) */ + static const uint8_t ms4[4][2] = { + { 0x6, 0x2 }, { 0xe, 0x6 }, /* (0,0), (1,0) */ + { 0x2, 0xa }, { 0xa, 0xe } }; /* (0,1), (1,1) */ + static const uint8_t ms8[8][2] = { + { 0x1, 0x7 }, { 0x5, 0x3 }, /* (0,0), (1,0) */ + { 0x3, 0xd }, { 0x7, 0xb }, /* (0,1), (1,1) */ + { 0x9, 0x5 }, { 0xf, 0x1 }, /* (2,0), (3,0) */ + { 0xb, 0xf }, { 0xd, 0x9 } }; /* (2,1), (3,1) */ +#if 0 + /* NOTE: there are alternative modes for MS2 and MS8, currently not used */ + static const uint8_t ms8_alt[8][2] = { + { 0x9, 0x5 }, { 0x7, 0xb }, /* (2,0), (1,1) */ + { 0xd, 0x9 }, { 0x5, 0x3 }, /* (3,1), (1,0) */ + { 0x3, 0xd }, { 0x1, 0x7 }, /* (0,1), (0,0) */ + { 0xb, 0xf }, { 0xf, 0x1 } }; /* (2,1), (3,0) */ +#endif + + const uint8_t (*ptr)[2]; + + switch (sample_count) { + case 0: + case 1: ptr = ms1; break; + case 2: ptr = ms2; break; + case 4: ptr = ms4; break; + case 8: ptr = ms8; break; + default: + assert(0); + return; /* bad sample count -> undefined locations */ + } + xy[0] = ptr[sample_index][0] * 0.0625f; + xy[1] = ptr[sample_index][1] * 0.0625f; +} |