diff options
| -rw-r--r-- | src/gallium/state_trackers/nine/nine_shader.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/src/gallium/state_trackers/nine/nine_shader.c b/src/gallium/state_trackers/nine/nine_shader.c index 0edf7e8b669..027f5ba036d 100644 --- a/src/gallium/state_trackers/nine/nine_shader.c +++ b/src/gallium/state_trackers/nine/nine_shader.c @@ -2314,7 +2314,28 @@ DECL_SPECIAL(TEXM3x3) DECL_SPECIAL(TEXDEPTH) { - STUB(D3DERR_INVALIDCALL); + struct ureg_program *ureg = tx->ureg; + struct ureg_dst r5; + struct ureg_src r5r, r5g; + + assert(tx->insn.dst[0].idx == 5); /* instruction must get r5 here */ + + /* we must replace the depth by r5.g == 0 ? 1.0f : r5.r/r5.g. + * r5 won't be used afterward, thus we can use r5.ba */ + r5 = tx->regs.r[5]; + r5r = ureg_scalar(ureg_src(r5), TGSI_SWIZZLE_X); + r5g = ureg_scalar(ureg_src(r5), TGSI_SWIZZLE_Y); + + ureg_RCP(ureg, ureg_writemask(r5, TGSI_WRITEMASK_Z), r5g); + ureg_MUL(ureg, ureg_writemask(r5, TGSI_WRITEMASK_X), r5r, ureg_scalar(ureg_src(r5), TGSI_SWIZZLE_Z)); + /* r5.r = r/g */ + ureg_CMP(ureg, ureg_writemask(r5, TGSI_WRITEMASK_X), ureg_negate(ureg_abs(r5g)), + r5r, ureg_imm1f(ureg, 1.0f)); + /* replace the depth for depth testing with the result */ + tx->regs.oDepth = ureg_DECL_output_masked(ureg, TGSI_SEMANTIC_POSITION, 0, TGSI_WRITEMASK_Z); + ureg_MOV(ureg, tx->regs.oDepth, r5r); + + return D3D_OK; } DECL_SPECIAL(BEM) |