diff options
| author | Brian <brian.paul@tungstengraphics.com> | 2008-01-28 17:32:23 -0700 |
|---|---|---|
| committer | Ben Skeggs <skeggsb@gmail.com> | 2008-02-15 13:50:24 +1100 |
| commit | 5f54cfaba16c2ac268472e148f1e788a9d7b2a6a (patch) | |
| tree | 276975c638e594f2abca86c837b70a138d128827 /src/mesa/pipe | |
| parent | 948dc8ad24d554ab23bea97aa3e405c4f6ad47c6 (diff) | |
Cell: minor optimization for flat shading
Diffstat (limited to 'src/mesa/pipe')
| -rw-r--r-- | src/mesa/pipe/cell/spu/spu_tri.c | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/src/mesa/pipe/cell/spu/spu_tri.c b/src/mesa/pipe/cell/spu/spu_tri.c index aad28f1036..19a231d9c4 100644 --- a/src/mesa/pipe/cell/spu/spu_tri.c +++ b/src/mesa/pipe/cell/spu/spu_tri.c @@ -200,16 +200,35 @@ static INLINE void eval_coeff( struct setup_stage *setup, uint slot, float x, float y, float result[4][4]) { - uint i; - const float *dadx = setup->coef[slot].dadx; - const float *dady = setup->coef[slot].dady; + switch (spu.vertex_info.interp_mode[slot]) { + case INTERP_CONSTANT: + { + uint i; + for (i = 0; i < 4; i++) { + result[QUAD_TOP_LEFT][i] = + result[QUAD_TOP_RIGHT][i] = + result[QUAD_BOTTOM_LEFT][i] = + result[QUAD_BOTTOM_RIGHT][i] = setup->coef[slot].a0[i]; + } + } + break; - /* loop over XYZW comps */ - for (i = 0; i < 4; i++) { - result[QUAD_TOP_LEFT][i] = setup->coef[slot].a0[i] + x * dadx[i] + y * dady[i]; - result[QUAD_TOP_RIGHT][i] = result[0][i] + dadx[i]; - result[QUAD_BOTTOM_LEFT][i] = result[0][i] + dady[i]; - result[QUAD_BOTTOM_RIGHT][i] = result[0][i] + dadx[i] + dady[i]; + case INTERP_LINEAR: + /* fall-through, for now */ + default: + { + uint i; + const float *dadx = setup->coef[slot].dadx; + const float *dady = setup->coef[slot].dady; + + /* loop over XYZW comps */ + for (i = 0; i < 4; i++) { + result[QUAD_TOP_LEFT][i] = setup->coef[slot].a0[i] + x * dadx[i] + y * dady[i]; + result[QUAD_TOP_RIGHT][i] = result[0][i] + dadx[i]; + result[QUAD_BOTTOM_LEFT][i] = result[0][i] + dady[i]; + result[QUAD_BOTTOM_RIGHT][i] = result[0][i] + dadx[i] + dady[i]; + } + } } } |