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intel/compiler: Demote sampler params to 16-bit for CMS/UMS/MCS

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Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11766>
This commit is contained in:
Topi Pohjolainen 2020-07-07 23:32:51 -07:00 • committed by Sagar Ghuge
parent 0374b56faa
commit dfe0ba9080
1 changed files with 33 additions and 6 deletions
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39
src/intel/compiler/brw_fs.cpp
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@ -5616,7 +5616,8 @@ lower_sampler_logical_send_gfx7(const fs_builder &bld, fs_inst *inst, opcode op,
}
static unsigned
get_sampler_msg_payload_type_bit_size(const fs_reg *src)
get_sampler_msg_payload_type_bit_size(const intel_device_info *devinfo,
opcode op, const fs_reg *src)
{
unsigned src_type_size = 0;
@ -5633,13 +5634,39 @@ get_sampler_msg_payload_type_bit_size(const fs_reg *src)
assert(src_type_size == 2 || src_type_size == 4);
#ifndef NDEBUG
/* Make sure all sources agree. */
for (unsigned i = 0; i < TEX_LOGICAL_NUM_SRCS; i++) {
assert(src[i].file == BAD_FILE ||
brw_reg_type_to_size(src[i].type) == src_type_size);
/* Make sure all sources agree. On gfx12 this doesn't hold when sampling
* compressed multisampled surfaces. There the payload contains MCS data
* which is already in 16-bits unlike the other parameters that need forced
* conversion.
*/
if (devinfo->verx10 < 125 ||
(op != SHADER_OPCODE_TXF_CMS_W &&
op != SHADER_OPCODE_TXF_CMS)) {
for (unsigned i = 0; i < TEX_LOGICAL_NUM_SRCS; i++) {
assert(src[i].file == BAD_FILE ||
brw_reg_type_to_size(src[i].type) == src_type_size);
}
}
#endif
if (devinfo->verx10 < 125)
return src_type_size * 8;
/* Force conversion from 32-bit sources to 16-bit payload. From the XeHP Bspec:
* 3D and GPGPU Programs - Shared Functions - 3D Sampler - Messages - Message
* Format [GFX12:HAS:1209977870] *
*
* ld2dms_w SIMD8H and SIMD16H Only
* ld_mcs SIMD8H and SIMD16H Only
* ld2dms REMOVEDBY(GEN:HAS:1406788836)
*/
if (op == SHADER_OPCODE_TXF_CMS_W ||
op == SHADER_OPCODE_TXF_CMS ||
op == SHADER_OPCODE_TXF_UMS ||
op == SHADER_OPCODE_TXF_MCS)
src_type_size = 2;
return src_type_size * 8;
}
@ -5666,7 +5693,7 @@ lower_sampler_logical_send(const fs_builder &bld, fs_inst *inst, opcode op)
if (devinfo->ver >= 7) {
const unsigned msg_payload_type_bit_size =
get_sampler_msg_payload_type_bit_size(inst->src);
get_sampler_msg_payload_type_bit_size(devinfo, op, inst->src);
/* 16-bit payloads are available only on gfx11+ */
assert(msg_payload_type_bit_size != 16 || devinfo->ver >= 11);