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aco: implement a workaround for the image load DCC hw bug on GFX10.3

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Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9919>
This commit is contained in:
Samuel Pitoiset
2021-03-24 19:15:52 +01:00
committed by Marge Bot
parent 3dfb453626
commit 65bca137bd
3 changed files with 25 additions and 0 deletions
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src/amd/compiler/aco_instruction_selection.cpp
+23
View File
@@ -5471,6 +5471,29 @@ Temp get_sampler_desc(isel_context *ctx, nir_deref_instr *deref_instr,
Definition(components[7]),
desc2);
res = bld.pseudo(aco_opcode::p_create_vector, bld.def(s8),
components[0], components[1], components[2], components[3],
components[4], components[5], components[6], components[7]);
} else if (desc_type == ACO_DESC_IMAGE &&
ctx->options->has_image_load_dcc_bug &&
image && !write) {
Temp components[8];
for (unsigned i = 0; i < 8; i++)
components[i] = bld.tmp(s1);
bld.pseudo(aco_opcode::p_split_vector,
Definition(components[0]), Definition(components[1]),
Definition(components[2]), Definition(components[3]),
Definition(components[4]), Definition(components[5]),
Definition(components[6]), Definition(components[7]), res);
/* WRITE_COMPRESS_ENABLE must be 0 for all image loads to workaround a
* hardware bug.
*/
components[6] = bld.sop2(aco_opcode::s_and_b32, bld.def(s1), bld.def(s1, scc),
components[6],
bld.copy(bld.def(s1), Operand((uint32_t)C_00A018_WRITE_COMPRESS_ENABLE)));
res = bld.pseudo(aco_opcode::p_create_vector, bld.def(s8),
components[0], components[1], components[2], components[3],
components[4], components[5], components[6], components[7]);