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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>
This commit is contained in:
Nicolai Hähnle 2017-01-16 16:43:54 +01:00
parent b71c415c3d
commit cfabbbcfd7
1 changed files with 3 additions and 6 deletions
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9
src/mesa/state_tracker/st_glsl_to_tgsi.cpp
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@ -955,7 +955,7 @@ glsl_to_tgsi_visitor::get_opcode(unsigned op,
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 @@ glsl_to_tgsi_visitor::visit_expression(ir_expression* ir, st_src_reg *op)
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 @@ st_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
lower_instructions(ir,
MOD_TO_FLOOR |
DIV_TO_MUL_RCP |
FDIV_TO_MUL_RCP |
EXP_TO_EXP2 |
LOG_TO_LOG2 |
LDEXP_TO_ARITH |