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vkd3d-shader/ir: Lower UDIV to UDIV_SIMPLE and UREM.

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This commit is contained in:
Giovanni Mascellani
2025-06-20 19:03:49 +02:00
committed by Henri Verbeet
parent 82ef9bf2e5
commit 596f02210d
Notes: Henri Verbeet 2025-06-25 17:09:38 +02:00 
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1603
2 changed files with 82 additions and 60 deletions
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82
libs/vkd3d-shader/ir.c
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@@ -1167,6 +1167,83 @@ static enum vkd3d_result vsir_program_lower_imul(struct vsir_program *program,
return VKD3D_OK;
}
static enum vkd3d_result vsir_program_lower_udiv(struct vsir_program *program,
struct vkd3d_shader_instruction *udiv, struct vsir_transformation_context *ctx)
{
struct vkd3d_shader_instruction_array *instructions = &program->instructions;
size_t pos = udiv - instructions->elements;
struct vkd3d_shader_instruction *ins, *mov;
unsigned int count = 2;
if (udiv->dst_count != 2)
{
vkd3d_shader_error(ctx->message_context, &udiv->location,
VKD3D_SHADER_ERROR_VSIR_INVALID_DEST_COUNT,
"Internal compiler error: invalid destination count %u for UDIV.",
udiv->dst_count);
return VKD3D_ERROR;
}
if (udiv->dst[0].reg.type != VKD3DSPR_NULL)
++count;
if (udiv->dst[1].reg.type != VKD3DSPR_NULL)
++count;
if (!shader_instruction_array_insert_at(instructions, pos + 1, count))
return VKD3D_ERROR_OUT_OF_MEMORY;
udiv = &instructions->elements[pos];
ins = &instructions->elements[pos + 1];
/* Save the sources in a SSA in case a destination collides with a source. */
mov = ins++;
if (!(vsir_instruction_init_with_params(program, mov, &udiv->location, VSIR_OP_MOV, 1, 1)))
return VKD3D_ERROR_OUT_OF_MEMORY;
mov->src[0] = udiv->src[0];
dst_param_init_ssa_vec4(&mov->dst[0], program->ssa_count, udiv->src[0].reg.data_type);
mov = ins++;
if (!(vsir_instruction_init_with_params(program, mov, &udiv->location, VSIR_OP_MOV, 1, 1)))
return VKD3D_ERROR_OUT_OF_MEMORY;
mov->src[0] = udiv->src[1];
dst_param_init_ssa_vec4(&mov->dst[0], program->ssa_count + 1, udiv->src[1].reg.data_type);
if (udiv->dst[0].reg.type != VKD3DSPR_NULL)
{
if (!(vsir_instruction_init_with_params(program, ins, &udiv->location, VSIR_OP_UDIV_SIMPLE, 1, 2)))
return VKD3D_ERROR_OUT_OF_MEMORY;
ins->flags = udiv->flags;
src_param_init_ssa_vec4(&ins->src[0], program->ssa_count, udiv->src[0].reg.data_type);
src_param_init_ssa_vec4(&ins->src[1], program->ssa_count + 1, udiv->src[1].reg.data_type);
ins->dst[0] = udiv->dst[0];
++ins;
}
if (udiv->dst[1].reg.type != VKD3DSPR_NULL)
{
if (!(vsir_instruction_init_with_params(program, ins, &udiv->location, VSIR_OP_UREM, 1, 2)))
return VKD3D_ERROR_OUT_OF_MEMORY;
ins->flags = udiv->flags;
src_param_init_ssa_vec4(&ins->src[0], program->ssa_count, udiv->src[0].reg.data_type);
src_param_init_ssa_vec4(&ins->src[1], program->ssa_count + 1, udiv->src[1].reg.data_type);
ins->dst[0] = udiv->dst[1];
++ins;
}
vkd3d_shader_instruction_make_nop(udiv);
program->ssa_count += 2;
return VKD3D_OK;
}
static enum vkd3d_result vsir_program_lower_sm1_sincos(struct vsir_program *program,
struct vkd3d_shader_instruction *sincos)
{
@@ -1553,6 +1630,11 @@ static enum vkd3d_result vsir_program_lower_instructions(struct vsir_program *pr
return ret;
break;
case VSIR_OP_UDIV:
if ((ret = vsir_program_lower_udiv(program, ins, ctx)) < 0)
return ret;
break;
case VSIR_OP_SINCOS:
if (ins->dst_count == 1)
{