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vkd3d-shader/ir: Lower VSIR_OP_NRM instructions.

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This commit is contained in:
Henri Verbeet
2025-11-23 01:12:00 +01:00
parent 2b31efe03a
commit fdfb74b20b
Notes: Henri Verbeet 2025-11-27 22:06:01 +01:00 
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1847
3 changed files with 90 additions and 12 deletions
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60
libs/vkd3d-shader/ir.c
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@@ -1323,6 +1323,62 @@ static enum vkd3d_result vsir_program_lower_ifc(struct vsir_program *program,
return VKD3D_OK;
}
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);
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;
unsigned int dot_id, rsq_id, mul_id;
struct vsir_program_iterator it;
/* nrm DST, SRC
* ->
* dp3 srDOT, SRC, SRC
* rsq srRSQ, srDOT
* mul srMUL, srRSQ, SRC
* movc DST, srDOT, srMUL, srDOT */
if (!(ins = vsir_program_iterator_insert_before(nrm, &it, 3)))
return VKD3D_ERROR_OUT_OF_MEMORY;
if (!vsir_instruction_init_with_params(program, ins, &location, VSIR_OP_DP3, 1, 2))
goto fail;
dot_id = program->ssa_count++;
dst_param_init_ssa(&ins->dst[0], dot_id, src[0].reg.data_type, VSIR_DIMENSION_SCALAR);
ins->src[0] = src[0];
ins->src[1] = src[0];
ins = vsir_program_iterator_next(&it);
if (!vsir_instruction_init_with_params(program, ins, &location, VSIR_OP_RSQ, 1, 1))
goto fail;
rsq_id = program->ssa_count++;
dst_param_init_ssa(&ins->dst[0], rsq_id, src[0].reg.data_type, VSIR_DIMENSION_SCALAR);
src_param_init_ssa(&ins->src[0], dot_id, src[0].reg.data_type, VSIR_DIMENSION_SCALAR);
ins = vsir_program_iterator_next(&it);
if (!vsir_instruction_init_with_params(program, ins, &location, VSIR_OP_MUL, 1, 2))
goto fail;
mul_id = program->ssa_count++;
dst_param_init_ssa(&ins->dst[0], mul_id, src[0].reg.data_type, dst[0].reg.dimension);
src_param_init_ssa(&ins->src[0], rsq_id, src[0].reg.data_type, VSIR_DIMENSION_SCALAR);
ins->src[1] = src[0];
ins = vsir_program_iterator_next(&it);
if (!vsir_instruction_init_with_params(program, ins, &location, VSIR_OP_MOVC, 1, 3))
goto fail;
ins->dst[0] = dst[0];
src_param_init_ssa(&ins->src[0], dot_id, VSIR_DATA_U32, VSIR_DIMENSION_SCALAR);
src_param_init_ssa(&ins->src[1], mul_id, src[0].reg.data_type, dst[0].reg.dimension);
src_param_init_ssa(&ins->src[2], dot_id, src[0].reg.data_type, VSIR_DIMENSION_SCALAR);
return VKD3D_OK;
fail:
vsir_program_iterator_nop_range(&it, nrm, &location);
return VKD3D_ERROR_OUT_OF_MEMORY;
}
static enum vkd3d_result vsir_program_lower_texkill(struct vsir_program *program,
struct vsir_program_iterator *it, unsigned int *tmp_idx)
{
@@ -2364,6 +2420,10 @@ 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_NRM:
ret = vsir_program_lower_nrm(program, &it);
break;
case VSIR_OP_SINCOS:
ret = vsir_program_lower_sm1_sincos(program, &it);
break;