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author | Axel Davy <[email protected]> | 2016-11-26 21:47:44 +0100 |
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committer | Axel Davy <[email protected]> | 2016-12-20 23:44:21 +0100 |
commit | 1ee978fa5054617624a7e521d9eddccbcc1f87ce (patch) | |
tree | 5cf8ad1c1b38939c05e3544497a8d727823d19d4 | |
parent | 89716b0b384cfdab979127c70b8525692fcb243a (diff) |
st/nine: Fix check for ff specular
Fix the check for computing ff specular.
This seems to match the opengl behavior,
and give the correct output on windows.
Signed-off-by: Axel Davy <[email protected]>
-rw-r--r-- | src/gallium/state_trackers/nine/nine_ff.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/gallium/state_trackers/nine/nine_ff.c b/src/gallium/state_trackers/nine/nine_ff.c index a1eb3783b00..ecb1dd8d31f 100644 --- a/src/gallium/state_trackers/nine/nine_ff.c +++ b/src/gallium/state_trackers/nine/nine_ff.c @@ -883,9 +883,15 @@ nine_ff_build_vs(struct NineDevice9 *device, struct vs_build_ctx *vs) ureg_SUB(ureg, rMid, ureg_src(rHit), ureg_imm3f(ureg, 0.0f, 0.0f, 1.0f)); } ureg_normalize3(ureg, rMid, ureg_src(rMid)); + ureg_DP3(ureg, ureg_saturate(tmp_x), vs->aNrm, ureg_src(rHit)); ureg_DP3(ureg, ureg_saturate(tmp_y), vs->aNrm, ureg_src(rMid)); - ureg_IF(ureg, _Y(tmp), &label[l++]); + ureg_MUL(ureg, tmp_z, _X(tmp), _Y(tmp)); + /* Tests show that specular is computed only if (dp3(normal,hitDir) > 0). + * For front facing, it is more restrictive than test (dp3(normal,mid) > 0). + * No tests were made for backfacing, so add the two conditions */ + ureg_IF(ureg, _Z(tmp), &label[l++]); { + ureg_DP3(ureg, ureg_saturate(tmp_y), vs->aNrm, ureg_src(rMid)); ureg_POW(ureg, tmp_y, _Y(tmp), mtlP); ureg_MUL(ureg, tmp_y, _W(rAtt), _Y(tmp)); /* power factor * att */ ureg_MAD(ureg, rS, cLColS, _Y(tmp), ureg_src(rS)); /* accumulate specular */ @@ -893,7 +899,6 @@ nine_ff_build_vs(struct NineDevice9 *device, struct vs_build_ctx *vs) ureg_fixup_label(ureg, label[l-1], ureg_get_instruction_number(ureg)); ureg_ENDIF(ureg); - ureg_DP3(ureg, ureg_saturate(tmp_x), vs->aNrm, ureg_src(rHit)); ureg_MUL(ureg, tmp_x, _W(rAtt), _X(tmp)); /* dp3(normal,hitDir) * att */ ureg_MAD(ureg, rD, cLColD, _X(tmp), ureg_src(rD)); /* accumulate diffuse */ } |