Signed-off-by: Axel Davy <axel.d...@ens.fr>
Cc: "10.4" <mesa-sta...@lists.freedesktop.org>
---
src/gallium/state_trackers/nine/nine_shader.c | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/src/gallium/state_trackers/nine/nine_shader.c
b/src/gallium/state_trackers/nine/nine_shader.c
index 440f6f7..ac86237 100644
--- a/src/gallium/state_trackers/nine/nine_shader.c
+++ b/src/gallium/state_trackers/nine/nine_shader.c
@@ -2154,7 +2154,32 @@ DECL_SPECIAL(TEXDP3TEX)
DECL_SPECIAL(TEXM3x2DEPTH)
{
- STUB(D3DERR_INVALIDCALL);
+ struct ureg_program *ureg = tx->ureg;
+ struct ureg_dst tmp;
+ const int m = tx->insn.dst[0].idx - 1;
+ const int n = tx->insn.src[0].idx;
+ assert(m >= 0 && m > n);
+
+ tx_texcoord_alloc(tx, m);
+ tx_texcoord_alloc(tx, m+1);
+
+ tmp = tx_scratch(tx);
+
+ /* performs the matrix multiplication */
+ ureg_DP3(ureg, ureg_writemask(tmp, TGSI_WRITEMASK_X), tx->regs.vT[m],
ureg_src(tx->regs.tS[n]));
+ ureg_DP3(ureg, ureg_writemask(tmp, TGSI_WRITEMASK_Y), tx->regs.vT[m+1],
ureg_src(tx->regs.tS[n]));
+
+ ureg_RCP(ureg, ureg_writemask(tmp, TGSI_WRITEMASK_Z),
ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_Y));
+ /* tmp.x = 'z', tmp.y = 'w', tmp.z = 1/'w'. */
+ ureg_MUL(ureg, ureg_writemask(tmp, TGSI_WRITEMASK_X),
ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_X), ureg_scalar(ureg_src(tmp),
TGSI_SWIZZLE_Z));
+ /* res = 'w' == 0 ? 1.0 : z/w */
+ ureg_CMP(ureg, ureg_writemask(tmp, TGSI_WRITEMASK_X),
ureg_negate(ureg_abs(ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_Y))),
+ ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_X), 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, ureg_scalar(ureg_src(tmp),
TGSI_SWIZZLE_X));
+ /* note that we write nothing to the destination, since it's disallowed to
use it afterward */
+ return D3D_OK;
}
DECL_SPECIAL(TEXDP3)
--
2.1.3
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