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vkd3d-shader: Introduce a function to build a varying map between sm1 stages.

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This commit is contained in:
Zebediah Figura
2023-07-31 00:45:54 -05:00
committed by Alexandre Julliard
parent d932fba7c3
commit f649db23a5
Notes: Alexandre Julliard 2023-08-03 21:25:28 +09:00 
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/280
2 changed files with 69 additions and 0 deletions
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38
libs/vkd3d-shader/vkd3d_shader_main.c
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@@ -1891,3 +1891,41 @@ void shader_instruction_array_destroy(struct vkd3d_shader_instruction_array *ins
vkd3d_free(instructions->icbs[i]);
vkd3d_free(instructions->icbs);
}
void vkd3d_shader_build_varying_map(const struct vkd3d_shader_signature *output_signature,
const struct vkd3d_shader_signature *input_signature,
unsigned int *ret_count, struct vkd3d_shader_varying_map *varyings)
{
unsigned int count = 0;
unsigned int i;
TRACE("output_signature %p, input_signature %p, ret_count %p, varyings %p.\n",
output_signature, input_signature, ret_count, varyings);
for (i = 0; i < input_signature->element_count; ++i)
{
const struct vkd3d_shader_signature_element *input_element, *output_element;
input_element = &input_signature->elements[i];
if (input_element->sysval_semantic != VKD3D_SHADER_SV_NONE)
continue;
varyings[count].input_register_index = input_element->register_index;
varyings[count].input_mask = input_element->mask;
if ((output_element = vkd3d_shader_find_signature_element(output_signature,
input_element->semantic_name, input_element->semantic_index, 0)))
{
varyings[count].output_signature_index = output_element - output_signature->elements;
}
else
{
varyings[count].output_signature_index = output_signature->element_count;
}
++count;
}
*ret_count = count;
}