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vkd3d-shader/hlsl: Remove trivial swizzles.

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Signed-off-by: Giovanni Mascellani <gmascellani@codeweavers.com>
Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Giovanni Mascellani 2021-11-17 09:47:24 +01:00 committed by Alexandre Julliard
parent b4aacec5cd
commit 93a40c1c57
1 changed files with 22 additions and 0 deletions
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22
libs/vkd3d-shader/hlsl_codegen.c
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@ -475,6 +475,27 @@ static bool fold_constants(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, voi
return true;
}
static bool remove_trivial_swizzles(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context)
{
struct hlsl_ir_swizzle *swizzle;
unsigned int i;
if (instr->type != HLSL_IR_SWIZZLE)
return false;
swizzle = hlsl_ir_swizzle(instr);
if (instr->data_type->dimx != swizzle->val.node->data_type->dimx)
return false;
for (i = 0; i < instr->data_type->dimx; ++i)
if (((swizzle->swizzle >> (2 * i)) & 3) != i)
return false;
replace_node(instr, swizzle->val.node);
return true;
}
/* Lower DIV to RCP + MUL. */
static bool lower_division(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context)
{
@ -1355,6 +1376,7 @@ int hlsl_emit_dxbc(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl *entry_fun
}
while (progress);
while (transform_ir(ctx, fold_constants, body, NULL));
transform_ir(ctx, remove_trivial_swizzles, body, NULL);
if (ctx->profile->major_version < 4)
transform_ir(ctx, lower_division, body, NULL);