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vkd3d-shader/hlsl: Lower integer modulus for d3dbc target profiles.

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This commit is contained in:
Francisco Casas
2025-02-28 18:49:01 -03:00
committed by Henri Verbeet
parent 828afe188c
commit ea99d2c2cd
Notes: Henri Verbeet 2025-03-18 16:03:46 +01:00 
Approved-by: Elizabeth Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1427
2 changed files with 50 additions and 10 deletions
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40
libs/vkd3d-shader/hlsl_codegen.c
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@@ -3587,6 +3587,45 @@ static bool lower_trunc(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, struct
return true;
}
/* Lower modulus using:
*
* mod(x, y) = x - trunc(x / y) * y;
*
*/
static bool lower_int_modulus_sm1(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, struct hlsl_block *block)
{
struct hlsl_ir_node *div, *trunc, *mul, *neg, *operands[2], *ret;
struct hlsl_type *float_type;
struct hlsl_ir_expr *expr;
bool is_float;
if (instr->type != HLSL_IR_EXPR)
return false;
expr = hlsl_ir_expr(instr);
if (expr->op != HLSL_OP2_MOD)
return false;
is_float = instr->data_type->e.numeric.type == HLSL_TYPE_FLOAT
|| instr->data_type->e.numeric.type == HLSL_TYPE_HALF;
if (is_float)
return false;
float_type = hlsl_get_vector_type(ctx, HLSL_TYPE_FLOAT, instr->data_type->e.numeric.dimx);
for (unsigned int i = 0; i < 2; ++i)
{
operands[i] = hlsl_block_add_cast(ctx, block, expr->operands[i].node, float_type, &instr->loc);
}
div = hlsl_block_add_binary_expr(ctx, block, HLSL_OP2_DIV, operands[0], operands[1]);
trunc = hlsl_block_add_unary_expr(ctx, block, HLSL_OP1_TRUNC, div, &instr->loc);
mul = hlsl_block_add_binary_expr(ctx, block, HLSL_OP2_MUL, trunc, operands[1]);
neg = hlsl_block_add_unary_expr(ctx, block, HLSL_OP1_NEG, mul, &instr->loc);
ret = hlsl_block_add_binary_expr(ctx, block, HLSL_OP2_ADD, operands[0], neg);
hlsl_block_add_cast(ctx, block, ret, instr->data_type, &instr->loc);
return true;
}
/* Lower DIV to RCP + MUL. */
static bool lower_division(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, struct hlsl_block *block)
{
@@ -12698,6 +12737,7 @@ static void process_entry_function(struct hlsl_ctx *ctx,
while (lower_ir(ctx, lower_nonconstant_array_loads, body));
lower_ir(ctx, lower_ternary, body);
lower_ir(ctx, lower_int_modulus_sm1, body);
lower_ir(ctx, lower_division, body);
/* Constants casted to float must be folded, and new casts to bool also need to be lowered. */
hlsl_transform_ir(ctx, hlsl_fold_constant_exprs, body, NULL);