tgsi: add ATOMFADD operation
This is supported by at least NVIDIA hardware, and exposeable via GL extensions. Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Reviewed-by: Marek Olšák <marek.olsak@amd.com>
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@ -4253,6 +4253,9 @@ exec_atomop_mem(struct tgsi_exec_machine *mach,
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if (val == value[0].u[0])
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val = value2[0].u[0];
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break;
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case TGSI_OPCODE_ATOMFADD:
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val = fui(r[0].f[0] + value[0].f[0]);
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break;
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default:
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break;
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}
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@ -5933,6 +5936,7 @@ exec_instruction(
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case TGSI_OPCODE_ATOMUMAX:
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case TGSI_OPCODE_ATOMIMIN:
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case TGSI_OPCODE_ATOMIMAX:
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case TGSI_OPCODE_ATOMFADD:
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exec_atomop(mach, inst);
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break;
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@ -101,7 +101,7 @@ OPCODE(0, 0, NONE, BGNLOOP, .is_branch = 1, .post_indent = 1)
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OPCODE(0, 0, NONE, BGNSUB, .post_indent = 1)
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OPCODE(0, 0, NONE, ENDLOOP, .is_branch = 1, .pre_dedent = 1)
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OPCODE(0, 0, NONE, ENDSUB, .pre_dedent = 1)
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OPCODE_GAP(103) /* removed */
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OPCODE(1, 3, OTHR, ATOMFADD, .is_store = 1)
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OPCODE(1, 1, OTHR, TXQS, .is_tex = 1)
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OPCODE(1, 1, OTHR, RESQ)
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OPCODE(1, 1, COMP, READ_FIRST)
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@ -391,6 +391,7 @@ scan_instruction(struct tgsi_shader_info *info,
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case TGSI_OPCODE_ATOMUMAX:
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case TGSI_OPCODE_ATOMIMIN:
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case TGSI_OPCODE_ATOMIMAX:
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case TGSI_OPCODE_ATOMFADD:
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if (tgsi_is_bindless_image_file(fullinst->Src[0].Register.File)) {
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info->uses_bindless_images = true;
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@ -385,6 +385,7 @@ tgsi_util_get_inst_usage_mask(const struct tgsi_full_instruction *inst,
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case TGSI_OPCODE_ATOMUMAX:
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case TGSI_OPCODE_ATOMIMIN:
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case TGSI_OPCODE_ATOMIMAX:
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case TGSI_OPCODE_ATOMFADD:
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if (src_idx == 0) {
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read_mask = TGSI_WRITEMASK_XY; /* bindless handle possible */
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} else if (src_idx == 1) {
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@ -2684,6 +2684,21 @@ These atomic operations may only be used with 32-bit integer image formats.
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resource[offset] = dst_x + src_x
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.. opcode:: ATOMFADD - Atomic floating point addition
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Syntax: ``ATOMFADD dst, resource, offset, src``
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Example: ``ATOMFADD TEMP[0], BUFFER[0], TEMP[1], TEMP[2]``
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The following operation is performed atomically:
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.. math::
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dst_x = resource[offset]
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resource[offset] = dst_x + src_x
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.. opcode:: ATOMXCHG - Atomic exchange
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Syntax: ``ATOMXCHG dst, resource, offset, src``
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@ -442,7 +442,7 @@ enum tgsi_opcode {
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TGSI_OPCODE_BGNSUB = 100,
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TGSI_OPCODE_ENDLOOP = 101,
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TGSI_OPCODE_ENDSUB = 102,
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/* gap */
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TGSI_OPCODE_ATOMFADD = 103,
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TGSI_OPCODE_TXQS = 104,
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TGSI_OPCODE_RESQ = 105,
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TGSI_OPCODE_READ_FIRST = 106,
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