st/glsl_to_tgsi: use DDIV instead of DRCP + DMUL
Fixes GL45-CTS.gpu_shader_fp64.built_in_functions.
v2: use DDIV unconditionally (Roland)
Reviewed-by: Roland Scheidegger <sroland@vmware.com> (v1)
Reviewed-by: Marek Olšák <marek.olsak@amd.com> (v1)
Tested-by: Glenn Kennard <glenn.kennard@gmail.com>
Tested-by: James Harvey <lothmordor@gmail.com>
Cc: 17.0 <mesa-stable@lists.freedesktop.org>
(cherry picked from commit cfabbbcfd778cc404813c9f05a9ef79efe531980)
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 4bdb3a6..f9dc9b1 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -955,7 +955,7 @@
case3fid(MUL, UMUL, DMUL);
case3fid(MAD, UMAD, DMAD);
case3fid(FMA, UMAD, DFMA);
- case3(DIV, IDIV, UDIV);
+ case4d(DIV, IDIV, UDIV, DDIV);
case4d(MAX, IMAX, UMAX, DMAX);
case4d(MIN, IMIN, UMIN, DMIN);
case2iu(MOD, UMOD);
@@ -1710,10 +1710,7 @@
emit_asm(ir, TGSI_OPCODE_MUL, result_dst, op[0], op[1]);
break;
case ir_binop_div:
- if (result_dst.type == GLSL_TYPE_FLOAT || result_dst.type == GLSL_TYPE_DOUBLE)
- assert(!"not reached: should be handled by ir_div_to_mul_rcp");
- else
- emit_asm(ir, TGSI_OPCODE_DIV, result_dst, op[0], op[1]);
+ emit_asm(ir, TGSI_OPCODE_DIV, result_dst, op[0], op[1]);
break;
case ir_binop_mod:
if (result_dst.type == GLSL_TYPE_FLOAT)
@@ -6918,7 +6915,7 @@
lower_instructions(ir,
MOD_TO_FLOOR |
- DIV_TO_MUL_RCP |
+ FDIV_TO_MUL_RCP |
EXP_TO_EXP2 |
LOG_TO_LOG2 |
LDEXP_TO_ARITH |