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vkd3d-shader/hlsl: Support multiple-register variables in object regsets.

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Variables that contain more than one object (arrays or structs) require
the allocation of contiguous registers in the respective object
register spaces.
This commit is contained in:
Francisco Casas
2023-04-25 12:41:38 -04:00
committed by Alexandre Julliard
parent 9a8a440b9b
commit 69ff249ef4
Notes: Alexandre Julliard 2023-05-08 22:34:16 +02:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Zebediah Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/159
6 changed files with 95 additions and 42 deletions
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11
libs/vkd3d-shader/hlsl.h
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@@ -240,16 +240,21 @@ struct hlsl_struct_field
size_t name_bytecode_offset;
};
/* Information of the register allocated for an instruction node or variable.
/* Information of the register(s) allocated for an instruction node or variable.
* These values are initialized at the end of hlsl_emit_bytecode(), after the compilation passes,
* just before writing the bytecode.
* For numeric registers, a writemask can be provided to indicate the reservation of only some of the
* 4 components.
* The type of register (register class) is implied from its use, so it is not stored in this
* struct. */
struct hlsl_reg
{
/* Index of the first register allocated. */
uint32_t id;
/* Number of registers to be allocated.
* Unlike the variable's type's regsize, it is not expressed in register components, but rather
* in whole registers, and may depend on which components are used within the shader. */
uint32_t bind_count;
/* For numeric registers, a writemask can be provided to indicate the reservation of only some
* of the 4 components. */
unsigned int writemask;
/* Whether the register has been allocated. */
bool allocated;