The code has been taken almost as-is from vec4_visitor.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89580
---
src/mesa/drivers/dri/i965/brw_vec4_nir.cpp | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
index 9a31e6c..e9bdf02 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
@@ -1630,7 +1630,27 @@ vec4_visitor::nir_emit_texture(nir_tex_instr *instr)
}
inst->mlen++;
} else if (instr->op == nir_texop_txd) {
- /* @TODO: not yet implemented */
+ const brw_reg_type type = lod.type;
+
+ lod.swizzle = BRW_SWIZZLE4(SWIZZLE_X,SWIZZLE_X,SWIZZLE_Y,SWIZZLE_Y);
+ lod2.swizzle = BRW_SWIZZLE4(SWIZZLE_X,SWIZZLE_X,SWIZZLE_Y,SWIZZLE_Y);
+ emit(MOV(dst_reg(MRF, param_base + 1, type, WRITEMASK_XZ), lod));
+ emit(MOV(dst_reg(MRF, param_base + 1, type, WRITEMASK_YW), lod2));
+ inst->mlen++;
+
+ if (dest_type->vector_elements == 3 || shadow_compare) {
+ lod.swizzle = BRW_SWIZZLE_ZZZZ;
+ lod2.swizzle = BRW_SWIZZLE_ZZZZ;
+ emit(MOV(dst_reg(MRF, param_base + 2, type, WRITEMASK_X), lod));
+ emit(MOV(dst_reg(MRF, param_base + 2, type, WRITEMASK_Y), lod2));
+ inst->mlen++;
+
+ if (shadow_compare) {
+ emit(MOV(dst_reg(MRF, param_base + 2,
+ shadow_comparitor.type, WRITEMASK_Z),
+ shadow_comparitor));
+ }
+ }
} else if (instr->op == nir_texop_tg4) {
/* @TODO: not yet implemented */
}
--
2.1.4
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