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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
View File

@@ -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;

6
tests/d3dbc/lrp.shader_test
View File

@@ -28,7 +28,7 @@ ffff0200 % ps_2_0
[test]
uniform 0 float4 0 .25 .75 1
uniform 4 float4 0 .25 .75 1
todo draw quad
draw quad
probe ( 4, 4) f32(0, .25, .75, 1)
probe (20, 20) f32(0, .25, .75, 1)
probe (36, 36) f32(0, .25, .75, 1)
@@ -36,7 +36,7 @@ probe (52, 52) f32(0, .25, .75, 1)
uniform 0 float4 0 0 0 0
uniform 4 float4 1 1 1 1
todo draw quad
draw quad
probe ( 4, 4) f32(-1.0, 0.75, 1.5, -2.0)
probe (20, 20) f32(-0.5, 0.25, 0.5, -1.0)
probe (36, 36) f32( 0.0, -0.25, -0.5, 0.0)
@@ -44,7 +44,7 @@ probe (52, 52) f32( 0.5, -0.75, -1.5, 1.0)
uniform 0 float4 -2 -1 4 3
uniform 4 float4 0 1 2 1
todo draw quad
draw quad
probe ( 4, 4) f32(-4, 0.5, 1, 7)
probe (20, 20) f32(-3, -0.5, 3, 5)
probe (36, 36) f32(-2, -1.5, 5, 3)