diff options
author | Dave Airlie <airlied@redhat.com> | 2009-06-07 16:51:32 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2009-06-07 16:51:32 +1000 |
commit | 545e574cd9a2a659cd9a93879dff8884bd247558 (patch) | |
tree | f56d65eaa851edfb1248a6fc8ac0bae4cc98eff5 /src/gallium/drivers/cell/spu/spu_tri.c | |
parent | e2aedfa62079ff1a333e1f4e56faea303cc36edb (diff) | |
parent | f1edfa09ea50e8833ddbf241da4d36fd38685e9d (diff) |
Merge remote branch 'origin/master' into radeon-rewrite
Diffstat (limited to 'src/gallium/drivers/cell/spu/spu_tri.c')
-rw-r--r-- | src/gallium/drivers/cell/spu/spu_tri.c | 133 |
1 files changed, 86 insertions, 47 deletions
diff --git a/src/gallium/drivers/cell/spu/spu_tri.c b/src/gallium/drivers/cell/spu/spu_tri.c index d727268475..58be001be4 100644 --- a/src/gallium/drivers/cell/spu/spu_tri.c +++ b/src/gallium/drivers/cell/spu/spu_tri.c @@ -133,7 +133,15 @@ struct setup_stage { uint tx, ty; /**< position of current tile (x, y) */ - int cliprect_minx, cliprect_maxx, cliprect_miny, cliprect_maxy; + union { + struct { + int cliprect_minx; + int cliprect_miny; + int cliprect_maxx; + int cliprect_maxy; + }; + qword cliprect; + }; struct interp_coef coef[PIPE_MAX_SHADER_INPUTS]; @@ -432,6 +440,41 @@ print_vertex(const struct vertex_header *v) } #endif +/* Returns the minimum of each slot of two vec_float4s as qwords. + * i.e. return[n] = min(q0[n],q1[n]); + */ +static qword +minfq(qword q0, qword q1) +{ + const qword q0q1m = si_fcgt(q0, q1); + return si_selb(q0, q1, q0q1m); +} + +/* Returns the minimum of each slot of three vec_float4s as qwords. + * i.e. return[n] = min(q0[n],q1[n],q2[n]); + */ +static qword +min3fq(qword q0, qword q1, qword q2) +{ + return minfq(minfq(q0, q1), q2); +} + +/* Returns the maximum of each slot of two vec_float4s as qwords. + * i.e. return[n] = min(q0[n],q1[n],q2[n]); + */ +static qword +maxfq(qword q0, qword q1) { + const qword q0q1m = si_fcgt(q0, q1); + return si_selb(q1, q0, q0q1m); +} + +/* Returns the maximum of each slot of three vec_float4s as qwords. + * i.e. return[n] = min(q0[n],q1[n],q2[n]); + */ +static qword +max3fq(qword q0, qword q1, qword q2) { + return maxfq(maxfq(q0, q1), q2); +} /** * Sort vertices from top to bottom. @@ -440,9 +483,7 @@ print_vertex(const struct vertex_header *v) * \return FALSE if tri is totally outside tile, TRUE otherwise */ static boolean -setup_sort_vertices(const struct vertex_header *v0, - const struct vertex_header *v1, - const struct vertex_header *v2) +setup_sort_vertices(const qword vs) { float area, sign; @@ -455,57 +496,57 @@ setup_sort_vertices(const struct vertex_header *v0, } #endif - /* determine bottom to top order of vertices */ { + /* Load the float values for various processing... */ + const qword f0 = (qword)(((const struct vertex_header*)si_to_ptr(vs))->data[0]); + const qword f1 = (qword)(((const struct vertex_header*)si_to_ptr(si_rotqbyi(vs, 4)))->data[0]); + const qword f2 = (qword)(((const struct vertex_header*)si_to_ptr(si_rotqbyi(vs, 8)))->data[0]); + + /* Check if triangle is completely outside the tile bounds + * Find the min and max x and y positions of the three poits */ + const qword minf = min3fq(f0, f1, f2); + const qword maxf = max3fq(f0, f1, f2); + + /* Compare min and max against cliprect vals */ + const qword maxsmins = si_shufb(maxf, minf, SHUFB4(A,B,a,b)); + const qword outside = si_fcgt(maxsmins, si_csflt(setup.cliprect, 0)); + + /* Use a little magic to work out of the tri is visible or not */ + if(si_to_uint(si_xori(si_gb(outside), 0xc))) return FALSE; + + /* determine bottom to top order of vertices */ /* A table of shuffle patterns for putting vertex_header pointers into correct order. Quite magical. */ - const vec_uchar16 sort_order_patterns[] = { - SHUFFLE4(A,B,C,C), - SHUFFLE4(C,A,B,C), - SHUFFLE4(A,C,B,C), - SHUFFLE4(B,C,A,C), - SHUFFLE4(B,A,C,C), - SHUFFLE4(C,B,A,C) }; - - /* The vertex_header pointers, packed for easy shuffling later */ - const vec_uint4 vs = {(unsigned)v0, (unsigned)v1, (unsigned)v2}; + const qword sort_order_patterns[] = { + SHUFB4(A,B,C,C), + SHUFB4(C,A,B,C), + SHUFB4(A,C,B,C), + SHUFB4(B,C,A,C), + SHUFB4(B,A,C,C), + SHUFB4(C,B,A,C) }; /* Collate y values into two vectors for comparison. Using only one shuffle constant! ;) */ - const vec_float4 y_02_ = spu_shuffle(v0->data[0], v2->data[0], SHUFFLE4(0,B,b,C)); - const vec_float4 y_10_ = spu_shuffle(v1->data[0], v0->data[0], SHUFFLE4(0,B,b,C)); - const vec_float4 y_012 = spu_shuffle(y_02_, v1->data[0], SHUFFLE4(0,B,b,C)); - const vec_float4 y_120 = spu_shuffle(y_10_, v2->data[0], SHUFFLE4(0,B,b,C)); + const qword y_02_ = si_shufb(f0, f2, SHUFB4(0,B,b,C)); + const qword y_10_ = si_shufb(f1, f0, SHUFB4(0,B,b,C)); + const qword y_012 = si_shufb(y_02_, f1, SHUFB4(0,B,b,C)); + const qword y_120 = si_shufb(y_10_, f2, SHUFB4(0,B,b,C)); /* Perform comparison: {y0,y1,y2} > {y1,y2,y0} */ - const vec_uint4 compare = spu_cmpgt(y_012, y_120); + const qword compare = si_fcgt(y_012, y_120); /* Compress the result of the comparison into 4 bits */ - const vec_uint4 gather = spu_gather(compare); + const qword gather = si_gb(compare); /* Subtract one to attain the index into the LUT. Magical. */ - const unsigned int index = spu_extract(gather, 0) - 1; + const unsigned int index = si_to_uint(gather) - 1; /* Load the appropriate pattern and construct the desired vector. */ - setup.vertex_headers = (qword)spu_shuffle(vs, vs, sort_order_patterns[index]); + setup.vertex_headers = si_shufb(vs, vs, sort_order_patterns[index]); /* Using the result of the comparison, set sign. Very magical. */ - sign = ((si_to_uint(si_cntb((qword)gather)) == 2) ? 1.0f : -1.0f); + sign = ((si_to_uint(si_cntb(gather)) == 2) ? 1.0f : -1.0f); } - /* Check if triangle is completely outside the tile bounds */ - if (spu_extract(setup.vmin->data[0], 1) > setup.cliprect_maxy) - return FALSE; - if (spu_extract(setup.vmax->data[0], 1) < setup.cliprect_miny) - return FALSE; - if (spu_extract(setup.vmin->data[0], 0) < setup.cliprect_minx && - spu_extract(setup.vmid->data[0], 0) < setup.cliprect_minx && - spu_extract(setup.vmax->data[0], 0) < setup.cliprect_minx) - return FALSE; - if (spu_extract(setup.vmin->data[0], 0) > setup.cliprect_maxx && - spu_extract(setup.vmid->data[0], 0) > setup.cliprect_maxx && - spu_extract(setup.vmax->data[0], 0) > setup.cliprect_maxx) - return FALSE; - setup.ebot.ds = spu_sub(setup.vmid->data[0], setup.vmin->data[0]); setup.emaj.ds = spu_sub(setup.vmax->data[0], setup.vmin->data[0]); setup.etop.ds = spu_sub(setup.vmax->data[0], setup.vmid->data[0]); @@ -761,21 +802,19 @@ subtriangle(struct edge *eleft, struct edge *eright, unsigned lines) * The tile data should have already been fetched. */ boolean -tri_draw(const float *v0, const float *v1, const float *v2, +tri_draw(const qword vs, uint tx, uint ty) { setup.tx = tx; setup.ty = ty; /* set clipping bounds to tile bounds */ - setup.cliprect_minx = tx * TILE_SIZE; - setup.cliprect_miny = ty * TILE_SIZE; - setup.cliprect_maxx = (tx + 1) * TILE_SIZE; - setup.cliprect_maxy = (ty + 1) * TILE_SIZE; - - if (!setup_sort_vertices((struct vertex_header *) v0, - (struct vertex_header *) v1, - (struct vertex_header *) v2)) { + const qword clipbase = (qword)((vec_uint4){tx, ty}); + const qword clipmin = si_mpyui(clipbase, TILE_SIZE); + const qword clipmax = si_ai(clipmin, TILE_SIZE); + setup.cliprect = si_shufb(clipmin, clipmax, SHUFB4(A,B,a,b)); + + if(!setup_sort_vertices(vs)) { return FALSE; /* totally clipped */ } |