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include: Define an API for d3dbc constants.

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This commit is contained in:
Zebediah Figura 2023-02-27 23:56:09 -06:00 committed by Alexandre Julliard
parent a18ace731d
commit 55c5129ad9
Notes: Alexandre Julliard 2023-07-17 23:26:26 +02:00 
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/273
1 changed files with 41 additions and 1 deletions
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42
include/vkd3d_shader.h
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@ -332,6 +332,25 @@ struct vkd3d_shader_parameter
} u;
};
/**
* Symbolic register indices for mapping uniform constant register sets in
* legacy Direct3D bytecode to constant buffer views in the target environment.
*
* Members of this enumeration are used in
* \ref vkd3d_shader_resource_binding.register_index.
*
* \since 1.9
*/
enum vkd3d_shader_d3dbc_constant_register
{
/** The float constant register set, c# in Direct3D assembly. */
VKD3D_SHADER_D3DBC_FLOAT_CONSTANT_REGISTER = 0x0,
/** The integer constant register set, i# in Direct3D assembly. */
VKD3D_SHADER_D3DBC_INT_CONSTANT_REGISTER = 0x1,
/** The boolean constant register set, b# in Direct3D assembly. */
VKD3D_SHADER_D3DBC_BOOL_CONSTANT_REGISTER = 0x2,
};
/**
* Describes the mapping of a single resource or resource array to its binding
* point in the target environment.
@ -356,7 +375,14 @@ struct vkd3d_shader_resource_binding
* support multiple register spaces, this parameter must be set to 0.
*/
unsigned int register_space;
/** Register index of the DXBC resource. */
/**
* Register index of the Direct3D resource.
*
* For legacy Direct3D shaders, vkd3d-shader maps each constant register
* set to a single constant buffer view. This parameter names the register
* set to map, and must be a member of
* enum vkd3d_shader_d3dbc_constant_register.
*/
unsigned int register_index;
/** Shader stage(s) to which the resource is visible. */
enum vkd3d_shader_visibility shader_visibility;
@ -1330,6 +1356,20 @@ struct vkd3d_shader_descriptor_info
* A chained structure enumerating the descriptors declared by a shader.
*
* This structure extends vkd3d_shader_compile_info.
*
* When scanning a legacy Direct3D shader, vkd3d-shader enumerates each
* constant register set used by the shader as a single constant buffer
* descriptor, as follows:
* - The \ref vkd3d_shader_descriptor_info.type field is set to
* VKD3D_SHADER_DESCRIPTOR_TYPE_CBV.
* - The \ref vkd3d_shader_descriptor_info.register_space field is set to zero.
* - The \ref vkd3d_shader_descriptor_info.register_index field is set to a
* member of enum vkd3d_shader_d3dbc_constant_register denoting which set
* is used.
* - The \ref vkd3d_shader_descriptor_info.count field is set to one.
*
* In summary, there may be up to three such descriptors, one for each register
* set used by the shader: float, integer, and boolean.
*/
struct vkd3d_shader_scan_descriptor_info
{