Reviewed-by: David Heidelberg <[email protected]>
Signed-off-by: Axel Davy <[email protected]>
Cc: "10.4" <[email protected]>
---
src/gallium/state_trackers/nine/nine_shader.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/src/gallium/state_trackers/nine/nine_shader.c
b/src/gallium/state_trackers/nine/nine_shader.c
index 3b29f58..c484e7c 100644
--- a/src/gallium/state_trackers/nine/nine_shader.c
+++ b/src/gallium/state_trackers/nine/nine_shader.c
@@ -2301,7 +2301,28 @@ 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)
--
2.1.3
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