1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
use crate::ffi::{
SPIRV_MAGIC, SPIRV_VERSION_1_0, TRIANGLE_FRAGMENT_SHADER_WORDS, TRIANGLE_VERTEX_SHADER_WORDS,
};
/// Error found while checking a checked-in SPIR-V module.
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum VulkanShaderError {
/// SPIR-V module is too short to contain a header.
TooShort {
/// Shader name.
name: &'static str,
},
/// SPIR-V module has an invalid magic word.
InvalidMagic {
/// Shader name.
name: &'static str,
/// Found magic word.
found: u32,
},
/// SPIR-V module version is below 1.0.
UnsupportedVersion {
/// Shader name.
name: &'static str,
/// Found version word.
found: u32,
},
/// SPIR-V module declares an invalid bound.
InvalidBound {
/// Shader name.
name: &'static str,
},
}
impl std::fmt::Display for VulkanShaderError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Self::TooShort { name } => write!(f, "shader {name} SPIR-V module is too short"),
Self::InvalidMagic { name, found } => {
write!(f, "shader {name} has invalid SPIR-V magic 0x{found:08x}")
}
Self::UnsupportedVersion { name, found } => write!(
f,
"shader {name} has unsupported SPIR-V version 0x{found:08x}"
),
Self::InvalidBound { name } => write!(f, "shader {name} has invalid SPIR-V bound"),
}
}
}
impl std::error::Error for VulkanShaderError {}
/// Checks the checked-in triangle shader containers before creating a pipeline.
pub(crate) fn validate_triangle_shaders() -> Result<(), VulkanShaderError> {
validate_spirv_container("triangle.vert", TRIANGLE_VERTEX_SHADER_WORDS)?;
validate_spirv_container("triangle.frag", TRIANGLE_FRAGMENT_SHADER_WORDS)?;
Ok(())
}
pub(crate) fn validate_spirv_container(
name: &'static str,
words: &[u32],
) -> Result<(), VulkanShaderError> {
if words.len() < 5 {
return Err(VulkanShaderError::TooShort { name });
}
if words[0] != SPIRV_MAGIC {
return Err(VulkanShaderError::InvalidMagic {
name,
found: words[0],
});
}
if words[1] < SPIRV_VERSION_1_0 {
return Err(VulkanShaderError::UnsupportedVersion {
name,
found: words[1],
});
}
if words[3] == 0 {
return Err(VulkanShaderError::InvalidBound { name });
}
Ok(())
}
|
