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vkd3d-shader/ir: Lower VSIR_OP_LRP instructions.

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This commit is contained in:
Henri Verbeet
2025-11-29 20:36:51 +01:00
parent 355a88b564
commit e0c23624f2
Notes: Henri Verbeet 2025-12-02 14:38:06 +01:00 
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1850
2 changed files with 55 additions and 3 deletions
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52
libs/vkd3d-shader/ir.c
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@@ -1323,6 +1323,54 @@ static enum vkd3d_result vsir_program_lower_ifc(struct vsir_program *program,
return VKD3D_OK;
}
static enum vkd3d_result vsir_program_lower_lrp(struct vsir_program *program, struct vsir_program_iterator *lrp)
{
struct vkd3d_shader_instruction *ins = vsir_program_iterator_current(lrp);
const struct vkd3d_shader_location location = ins->location;
const struct vkd3d_shader_src_param *src = ins->src;
const struct vkd3d_shader_dst_param *dst = ins->dst;
struct vsir_program_iterator it;
unsigned int neg_id, mad_id;
/* lrp DST, SRC0, SRC1, SRC2
* ->
* neg srNEG, SRC0
* mad srMAD, srNEG, SRC2, SRC2
* mad DST, SRC0, SRC1, srMAD */
if (!(ins = vsir_program_iterator_insert_before(lrp, &it, 2)))
return VKD3D_ERROR_OUT_OF_MEMORY;
if (!vsir_instruction_init_with_params(program, ins, &location, VSIR_OP_NEG, 1, 1))
goto fail;
neg_id = program->ssa_count++;
dst_param_init_ssa(&ins->dst[0], neg_id, src[0].reg.data_type, src[0].reg.dimension);
ins->src[0] = src[0];
ins = vsir_program_iterator_next(&it);
if (!vsir_instruction_init_with_params(program, ins, &location, VSIR_OP_MAD, 1, 3))
goto fail;
mad_id = program->ssa_count++;
dst_param_init_ssa(&ins->dst[0], mad_id, src[2].reg.data_type, src[2].reg.dimension);
src_param_init_ssa(&ins->src[0], neg_id, src[0].reg.data_type, src[0].reg.dimension);
ins->src[1] = src[2];
ins->src[2] = src[2];
ins = vsir_program_iterator_next(&it);
if (!vsir_instruction_init_with_params(program, ins, &location, VSIR_OP_MAD, 1, 3))
goto fail;
ins->dst[0] = dst[0];
ins->src[0] = src[0];
ins->src[1] = src[1];
src_param_init_ssa(&ins->src[2], mad_id, src[2].reg.data_type, src[2].reg.dimension);
return VKD3D_OK;
fail:
vsir_program_iterator_nop_range(&it, lrp, &location);
return VKD3D_ERROR_OUT_OF_MEMORY;
}
static enum vkd3d_result vsir_program_lower_nrm(struct vsir_program *program, struct vsir_program_iterator *nrm)
{
struct vkd3d_shader_instruction *ins = vsir_program_iterator_current(nrm);
@@ -2420,6 +2468,10 @@ static enum vkd3d_result vsir_program_lower_d3dbc_instructions(struct vsir_progr
ret = vsir_program_lower_ifc(program, &it, &tmp_idx, message_context);
break;
case VSIR_OP_LRP:
ret = vsir_program_lower_lrp(program, &it);
break;
case VSIR_OP_NRM:
ret = vsir_program_lower_nrm(program, &it);
break;