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vkd3d-shader: Allocate constant registers for anonymous constants.

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Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zebediah Figura 2021-04-08 23:38:26 -05:00 committed by Alexandre Julliard
parent 60ece9cd62
commit 21b4052247
2 changed files with 52 additions and 0 deletions
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1
libs/vkd3d-shader/hlsl.h
View File

@ -380,6 +380,7 @@ struct hlsl_ir_constant
double d[4];
bool b[4];
} value;
struct hlsl_reg reg;
};
struct hlsl_scope

51
libs/vkd3d-shader/hlsl_codegen.c
View File

@ -798,6 +798,55 @@ static void allocate_temp_registers_recurse(struct list *instrs, struct liveness
}
}
static void allocate_const_registers_recurse(struct list *instrs, struct liveness *liveness)
{
struct hlsl_ir_node *instr;
LIST_FOR_EACH_ENTRY(instr, instrs, struct hlsl_ir_node, entry)
{
switch (instr->type)
{
case HLSL_IR_CONSTANT:
{
struct hlsl_ir_constant *constant = hlsl_ir_constant(instr);
if (instr->data_type->reg_size > 1)
constant->reg = allocate_range(liveness, 1, UINT_MAX, instr->data_type->reg_size);
else
constant->reg = allocate_register(liveness, 1, UINT_MAX, instr->data_type->dimx);
TRACE("Allocated constant @%u to %s.\n", instr->index,
debug_register('c', constant->reg, instr->data_type));
break;
}
case HLSL_IR_IF:
{
struct hlsl_ir_if *iff = hlsl_ir_if(instr);
allocate_const_registers_recurse(&iff->then_instrs, liveness);
allocate_const_registers_recurse(&iff->else_instrs, liveness);
break;
}
case HLSL_IR_LOOP:
{
struct hlsl_ir_loop *loop = hlsl_ir_loop(instr);
allocate_const_registers_recurse(&loop->body, liveness);
break;
}
default:
break;
}
}
}
static void allocate_const_registers(struct hlsl_ir_function_decl *entry_func)
{
struct liveness liveness = {0};
allocate_const_registers_recurse(entry_func->body, &liveness);
}
/* Simple greedy temporary register allocation pass that just assigns a unique
* index to all (simultaneously live) variables or intermediate values. Agnostic
* as to how many registers are actually available for the current backend, and
@ -846,6 +895,8 @@ int hlsl_emit_dxbc(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl *entry_fun
rb_for_each_entry(&ctx->functions, dump_function, NULL);
allocate_temp_registers(entry_func);
if (ctx->profile->major_version < 4)
allocate_const_registers(entry_func);
if (ctx->failed)
return VKD3D_ERROR_INVALID_SHADER;