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vkd3d-shader: Allow controlling alpha test through vkd3d-shader parameters.

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This commit is contained in:
Elizabeth Figura
2024-06-10 19:25:18 -05:00
committed by Henri Verbeet
parent c2ce15b623
commit 806363b765
Notes: Henri Verbeet 2024-07-11 17:16:48 +02:00 
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/870
4 changed files with 287 additions and 12 deletions
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47
include/vkd3d_shader.h
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@@ -492,6 +492,8 @@ enum vkd3d_shader_parameter_data_type
VKD3D_SHADER_PARAMETER_DATA_TYPE_UNKNOWN,
/** The parameter is provided as a 32-bit unsigned integer. */
VKD3D_SHADER_PARAMETER_DATA_TYPE_UINT32,
/** The parameter is provided as a 32-bit float. \since 1.13 */
VKD3D_SHADER_PARAMETER_DATA_TYPE_FLOAT32,
VKD3D_FORCE_32_BIT_ENUM(VKD3D_SHADER_PARAMETER_DATA_TYPE),
};
@@ -511,8 +513,46 @@ enum vkd3d_shader_parameter_name
* provides no builtin ability to query this information from the shader.
*
* The default value is 1.
*
* The data type for this parameter must be
* VKD3D_SHADER_PARAMETER_DATA_TYPE_UINT32.
*/
VKD3D_SHADER_PARAMETER_NAME_RASTERIZER_SAMPLE_COUNT,
/**
* Alpha test comparison function. When this parameter is provided, if the
* alpha component of the pixel shader colour output at location 0 fails the
* test, as defined by this function and the reference value provided by
* VKD3D_SHADER_PARAMETER_NAME_ALPHA_TEST_REF, the fragment will be
* discarded.
*
* This parameter, along with VKD3D_SHADER_PARAMETER_NAME_ALPHA_TEST_REF,
* can be used to implement fixed function alpha test, as present in
* Direct3D versions up to 9, if the target environment does not support
* alpha test as part of its own fixed-function API (as Vulkan and core
* OpenGL).
*
* The default value is VKD3D_SHADER_COMPARISON_FUNC_ALWAYS.
*
* The data type for this parameter must be
* VKD3D_SHADER_PARAMETER_DATA_TYPE_UINT32. The value specified must be
* a member of enum vkd3d_shader_comparison_func.
*
* Only VKD3D_SHADER_PARAMETER_TYPE_IMMEDIATE_CONSTANT is supported in this
* version of vkd3d-shader.
*
* \since 1.13
*/
VKD3D_SHADER_PARAMETER_NAME_ALPHA_TEST_FUNC,
/**
* Alpha test reference value.
* See VKD3D_SHADER_PARAMETER_NAME_ALPHA_TEST_FUNC for documentation of
* alpha test.
*
* The default value is zero.
*
* \since 1.13
*/
VKD3D_SHADER_PARAMETER_NAME_ALPHA_TEST_REF,
VKD3D_FORCE_32_BIT_ENUM(VKD3D_SHADER_PARAMETER_NAME),
};
@@ -530,6 +570,13 @@ struct vkd3d_shader_parameter_immediate_constant
* VKD3D_SHADER_PARAMETER_DATA_TYPE_UINT32.
*/
uint32_t u32;
/**
* The value if the parameter's data type is
* VKD3D_SHADER_PARAMETER_DATA_TYPE_FLOAT32.
*
* \since 1.13
*/
float f32;
} u;
};