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vkd3d-shader/ir: Evaluate OUTCONTROLPOINT usage in the patch constant phase directly.

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Instead of using DCL_INPUT.

The main goal here is to eventually get rid of the I/O
declaration instructions. A positive side effect is that we don't
add a useless barrier to shaders which have a DCL_INPUT instruction
in the patch constant phase but don't actually read OUTCONTROLPOINT
registers.
This commit is contained in:
Giovanni Mascellani 2024-11-22 20:51:03 +01:00 committed by Henri Verbeet
parent 1cfe23569c
commit 9e0c02a0ea
Notes: Henri Verbeet 2024-11-27 14:12:13 +01:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1282
1 changed files with 2 additions and 3 deletions
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5
libs/vkd3d-shader/ir.c
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@ -2181,6 +2181,8 @@ static void shader_src_param_io_normalise(struct vkd3d_shader_src_param *src_par
case VKD3DSPR_OUTCONTROLPOINT:
reg->type = VKD3DSPR_OUTPUT;
if (io_normaliser_is_in_fork_or_join_phase(normaliser))
normaliser->use_vocp = true;
/* fall through */
case VKD3DSPR_OUTPUT:
reg_idx = reg->idx[reg->idx_count - 1].offset;
@ -2231,9 +2233,6 @@ static void shader_instruction_normalise_io_params(struct vkd3d_shader_instructi
{
reg = &ins->declaration.dst.reg;
if (reg->type == VKD3DSPR_OUTCONTROLPOINT)
normaliser->use_vocp = true;
/* We don't need to keep OUTCONTROLPOINT or PATCHCONST input declarations since their
* equivalents were declared earlier, but INCONTROLPOINT may be the first occurrence. */
if (reg->type == VKD3DSPR_OUTCONTROLPOINT || reg->type == VKD3DSPR_PATCHCONST)