diff options
| author | Brian <brian.paul@tungstengraphics.com> | 2008-01-28 17:32:23 -0700 |
|---|---|---|
| committer | Brian <brian.paul@tungstengraphics.com> | 2008-01-28 18:18:46 -0700 |
| commit | 25105276b38451439516928d188e07f2eb3e250e (patch) | |
| tree | bf28d7d0d0f48be97afeb2eda2548f832eacbb16 | |
| parent | 425f270fcbfdbfce98adaf9da4b8eb7360f34447 (diff) | |
Cell: minor optimization for flat shading
| -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 aad28f1036f..19a231d9c4d 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]; + } + } } } |