diff options
Diffstat (limited to 'src/gallium/drivers/cell/spu')
-rw-r--r-- | src/gallium/drivers/cell/spu/spu_per_fragment_op.c | 44 |
1 files changed, 30 insertions, 14 deletions
diff --git a/src/gallium/drivers/cell/spu/spu_per_fragment_op.c b/src/gallium/drivers/cell/spu/spu_per_fragment_op.c index c0a729b3d2..db88735226 100644 --- a/src/gallium/drivers/cell/spu/spu_per_fragment_op.c +++ b/src/gallium/drivers/cell/spu/spu_per_fragment_op.c @@ -35,8 +35,17 @@ #define ZERO 0x80 + +/** + * Get a "quad" of four fragment Z/stencil values from the given tile. + * \param tile the tile of Z/stencil values + * \param x, y location of the quad in the tile, in pixels + * \param depth_format format of the tile's data + * \param detph returns four depth values + * \param stencil returns four stencil values + */ static void -read_ds_quad(tile_t *buffer, unsigned x, unsigned y, +read_ds_quad(tile_t *tile, unsigned x, unsigned y, enum pipe_format depth_format, qword *depth, qword *stencil) { @@ -45,14 +54,13 @@ read_ds_quad(tile_t *buffer, unsigned x, unsigned y, switch (depth_format) { case PIPE_FORMAT_Z16_UNORM: { - qword *ptr = (qword *) &buffer->us8[iy][ix / 2]; + qword *ptr = (qword *) &tile->us8[iy][ix / 2]; const qword shuf_vec = (qword) { ZERO, ZERO, 0, 1, ZERO, ZERO, 2, 3, ZERO, ZERO, 4, 5, ZERO, ZERO, 6, 7 }; - /* At even X values we want the first 4 shorts, and at odd X values we * want the second 4 shorts. */ @@ -65,18 +73,16 @@ read_ds_quad(tile_t *buffer, unsigned x, unsigned y, break; } - case PIPE_FORMAT_Z32_UNORM: { - qword *ptr = (qword *) &buffer->ui4[iy][ix]; + qword *ptr = (qword *) &tile->ui4[iy][ix]; *depth = *ptr; *stencil = si_il(0); break; } - case PIPE_FORMAT_Z24S8_UNORM: { - qword *ptr = (qword *) &buffer->ui4[iy][ix]; + qword *ptr = (qword *) &tile->ui4[iy][ix]; qword mask = si_fsmbi(0xEEEE); *depth = si_rotmai(si_and(*ptr, mask), -8); @@ -84,16 +90,14 @@ read_ds_quad(tile_t *buffer, unsigned x, unsigned y, break; } - case PIPE_FORMAT_S8Z24_UNORM: { - qword *ptr = (qword *) &buffer->ui4[iy][ix]; + qword *ptr = (qword *) &tile->ui4[iy][ix]; *depth = si_and(*ptr, si_fsmbi(0x7777)); *stencil = si_andi(si_roti(*ptr, 8), 0x0ff); break; } - default: ASSERT(0); break; @@ -101,6 +105,14 @@ read_ds_quad(tile_t *buffer, unsigned x, unsigned y, } +/** + * Put a quad of Z/stencil values into a tile. + * \param tile the tile of Z/stencil values to write into + * \param x, y location of the quad in the tile, in pixels + * \param depth_format format of the tile's data + * \param detph depth values to store + * \param stencil stencil values to store + */ static void write_ds_quad(tile_t *buffer, unsigned x, unsigned y, enum pipe_format depth_format, @@ -124,14 +136,12 @@ write_ds_quad(tile_t *buffer, unsigned x, unsigned y, break; } - case PIPE_FORMAT_Z32_UNORM: { qword *ptr = (qword *) &buffer->ui4[iy][ix]; *ptr = depth; break; } - case PIPE_FORMAT_Z24S8_UNORM: { qword *ptr = (qword *) &buffer->ui4[iy][ix]; qword mask = si_fsmbi(0xEEEE); @@ -141,7 +151,6 @@ write_ds_quad(tile_t *buffer, unsigned x, unsigned y, break; } - case PIPE_FORMAT_S8Z24_UNORM: { qword *ptr = (qword *) &buffer->ui4[iy][ix]; qword mask = si_fsmbi(0x7777); @@ -151,7 +160,6 @@ write_ds_quad(tile_t *buffer, unsigned x, unsigned y, break; } - default: ASSERT(0); break; @@ -159,6 +167,14 @@ write_ds_quad(tile_t *buffer, unsigned x, unsigned y, } +/** + * Do depth/stencil/alpha test for a "quad" of 4 fragments. + * \param x,y location of quad within tile + * \param frag_mask indicates which fragments are "alive" + * \param frag_depth four fragment depth values + * \param frag_alpha four fragment alpha values + * \param facing front/back facing for four fragments (1=front, 0=back) + */ qword spu_do_depth_stencil(int x, int y, qword frag_mask, qword frag_depth, qword frag_alpha, |