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vkd3d-shader/spirv: Allow the origin of fragment coordinates to be specified.

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We typically want to use lower-left in OpenGL environments when rendering to
FBOs.
This commit is contained in:
Henri Verbeet
2023-10-14 18:07:38 +02:00
committed by Alexandre Julliard
parent 0805ce121e
commit e7eec3e023
Notes: Alexandre Julliard 2023-11-10 00:08:58 +01:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/457
2 changed files with 37 additions and 1 deletions
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25
include/vkd3d_shader.h
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@@ -173,6 +173,21 @@ enum vkd3d_shader_compile_option_backward_compatibility
VKD3D_FORCE_32_BIT_ENUM(VKD3D_SHADER_COMPILE_OPTION_BACKWARD_COMPATIBILITY),
};
/**
* Determines the origin of fragment coordinates.
*
* \since 1.10
*/
enum vkd3d_shader_compile_option_fragment_coordinate_origin
{
/** Fragment coordinates originate from the upper-left. This is the
* default; it's also the only value supported by Vulkan environments. */
VKD3D_SHADER_COMPILE_OPTION_FRAGMENT_COORDINATE_ORIGIN_UPPER_LEFT = 0x00000000,
/** Fragment coordinates originate from the lower-left. This matches the
* traditional behaviour of OpenGL environments. */
VKD3D_SHADER_COMPILE_OPTION_FRAGMENT_COORDINATE_ORIGIN_LOWER_LEFT = 0x00000001,
};
enum vkd3d_shader_compile_option_name
{
/**
@@ -220,6 +235,16 @@ enum vkd3d_shader_compile_option_name
* \since 1.10
*/
VKD3D_SHADER_COMPILE_OPTION_BACKWARD_COMPATIBILITY = 0x00000008,
/**
* This option specifies the origin of fragment coordinates for SPIR-V
* targets.
*
* \a value is a member of enum
* vkd3d_shader_compile_option_fragment_coordinate_origin.
*
* \since 1.10
*/
VKD3D_SHADER_COMPILE_OPTION_FRAGMENT_COORDINATE_ORIGIN = 0x00000009,
VKD3D_FORCE_32_BIT_ENUM(VKD3D_SHADER_COMPILE_OPTION_NAME),
};