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vkd3d-shader/hlsl: Use aoffimmis when writing gather resource loads.

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If the offset of a gather resource load can be represented as an
aoffimmi (vectori of ints from -8 to 7), use one.
This is of particular importance for 4.0 profiles, where this is the only
valid way of representing offsets for this operation.
This commit is contained in:
Francisco Casas 2022-11-17 18:02:39 -03:00 committed by Alexandre Julliard
parent c2a7a40d3a
commit 18adf0d726
Notes: Alexandre Julliard 2023-01-24 22:27:58 +01:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Zebediah Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/51
1 changed files with 11 additions and 3 deletions
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14
libs/vkd3d-shader/hlsl_sm4.c
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@ -2154,11 +2154,19 @@ static void write_sm4_gather(struct hlsl_ctx *ctx, struct vkd3d_bytecode_buffer
sm4_src_from_node(&instr.srcs[instr.src_count++], coords, VKD3DSP_WRITEMASK_ALL);
/* FIXME: Use an aoffimmi modifier if possible. */
if (texel_offset)
{
instr.opcode = VKD3D_SM5_OP_GATHER4_PO;
sm4_src_from_node(&instr.srcs[instr.src_count++], texel_offset, VKD3DSP_WRITEMASK_ALL);
if (!encode_texel_offset_as_aoffimmi(&instr, texel_offset))
{
if (ctx->profile->major_version < 5)
{
hlsl_error(ctx, &texel_offset->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_TEXEL_OFFSET,
"Offset must resolve to integer literal in the range -8 to 7 for profiles < 5.");
return;
}
instr.opcode = VKD3D_SM5_OP_GATHER4_PO;
sm4_src_from_node(&instr.srcs[instr.src_count++], texel_offset, VKD3DSP_WRITEMASK_ALL);
}
}
sm4_src_from_deref(ctx, &instr.srcs[instr.src_count++], resource, resource_type, instr.dsts[0].writemask);