diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/state_trackers/nine/nine_ff.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/src/gallium/state_trackers/nine/nine_ff.c b/src/gallium/state_trackers/nine/nine_ff.c index 00f38dfef4e..9098684cb68 100644 --- a/src/gallium/state_trackers/nine/nine_ff.c +++ b/src/gallium/state_trackers/nine/nine_ff.c @@ -467,6 +467,10 @@ nine_ff_build_vs(struct NineDevice9 *device, struct vs_build_ctx *vs) ureg_MAD(ureg, tmp, vs->aInd, ureg_imm1f(ureg, 4.0f), ureg_imm1f(ureg, 224.0f)); ureg_ARL(ureg, AR, ureg_src(tmp)); } + + ureg_MOV(ureg, r[2], ureg_imm4f(ureg, 0.0f, 0.0f, 0.0f, 0.0f)); + ureg_MOV(ureg, r[3], ureg_imm4f(ureg, 1.0f, 1.0f, 1.0f, 1.0f)); + for (i = 0; i < key->vertexblend; ++i) { for (c = 0; c < 4; ++c) { cWM[c] = ureg_src_register(TGSI_FILE_CONSTANT, (224 + i * 4) * !key->vertexblend_indexed + c); @@ -479,12 +483,17 @@ nine_ff_build_vs(struct NineDevice9 *device, struct vs_build_ctx *vs) ureg_MAD(ureg, tmp, _ZZZZ(vs->aVtx), cWM[2], ureg_src(tmp)); ureg_MAD(ureg, tmp, _WWWW(vs->aVtx), cWM[3], ureg_src(tmp)); - /* accumulate weighted position value */ - if (i) + if (i < (key->vertexblend - 1)) { + /* accumulate weighted position value */ ureg_MAD(ureg, r[2], ureg_src(tmp), ureg_scalar(vs->aWgt, i), ureg_src(r[2])); - else - ureg_MUL(ureg, r[2], ureg_src(tmp), ureg_scalar(vs->aWgt, 0)); + /* subtract weighted position value for last value */ + ureg_SUB(ureg, r[3], ureg_src(r[3]), ureg_scalar(vs->aWgt, i)); + } } + + /* the last weighted position is always 1 - sum_of_previous_weights */ + ureg_MAD(ureg, r[2], ureg_src(tmp), ureg_scalar(ureg_src(r[3]), key->vertexblend - 1), ureg_src(r[2])); + /* multiply by VIEW_PROJ */ ureg_MUL(ureg, tmp, _X(r[2]), _CONST(8)); ureg_MAD(ureg, tmp, _Y(r[2]), _CONST(9), ureg_src(tmp)); |