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vkd3d-shader/hlsl: Lower int absolute value.

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This commit is contained in:
Giovanni Mascellani 2021-09-21 17:21:44 +02:00 committed by Alexandre Julliard
parent ef4990d996
commit 4c13ae5764
Notes: Alexandre Julliard 2022-10-18 00:13:00 +02:00 
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/28
2 changed files with 31 additions and 1 deletions
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30
libs/vkd3d-shader/hlsl_codegen.c
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@ -1284,6 +1284,35 @@ static bool lower_casts_to_bool(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr
return true;
}
static bool lower_int_abs(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context)
{
struct hlsl_type *type = instr->data_type;
struct hlsl_ir_node *arg, *neg;
struct hlsl_ir_expr *expr;
if (instr->type != HLSL_IR_EXPR)
return false;
expr = hlsl_ir_expr(instr);
if (expr->op != HLSL_OP1_ABS)
return false;
if (type->type != HLSL_CLASS_SCALAR && type->type != HLSL_CLASS_VECTOR)
return false;
if (type->base_type != HLSL_TYPE_INT)
return false;
arg = expr->operands[0].node;
if (!(neg = hlsl_new_unary_expr(ctx, HLSL_OP1_NEG, arg, instr->loc)))
return false;
list_add_before(&instr->entry, &neg->entry);
expr->op = HLSL_OP2_MAX;
hlsl_src_from_node(&expr->operands[1], neg);
return true;
}
static bool dce(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context)
{
switch (instr->type)
@ -2268,6 +2297,7 @@ int hlsl_emit_bytecode(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl *entry
transform_ir(ctx, lower_narrowing_casts, body, NULL);
transform_ir(ctx, lower_casts_to_bool, body, NULL);
transform_ir(ctx, lower_int_abs, body, NULL);
do
{
progress = transform_ir(ctx, hlsl_fold_constant_exprs, body, NULL);

2
tests/arithmetic-int-uniform.shader_test
View File

@ -38,5 +38,5 @@ float4 main() : SV_TARGET
[test]
uniform 0 float4 5.0 -7.0 0.0 -10.0
todo draw quad
draw quad
probe all rgba (5.0, 7.0, 0.0, 10.0)