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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
export const description = `
Samples a texture using explicit gradients.
`;
import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
import { GPUTest } from '../../../../../gpu_test.js';
import { generateCoordBoundaries, generateOffsets } from './utils.js';
export const g = makeTestGroup(GPUTest);
g.test('sampled_2d_coords')
.specURL('https://www.w3.org/TR/WGSL/#texturesamplegrad')
.desc(
`
fn textureSampleGrad(t: texture_2d<f32>, s: sampler, coords: vec2<f32>, ddx: vec2<f32>, ddy: vec2<f32>) -> vec4<f32>
fn textureSampleGrad(t: texture_2d<f32>, s: sampler, coords: vec2<f32>, ddx: vec2<f32>, ddy: vec2<f32>, offset: vec2<i32>) -> vec4<f32>
Parameters:
* t The sampled texture.
* s The sampler type.
* coords The texture coordinates used for sampling.
* ddx The x direction derivative vector used to compute the sampling locations
* ddy The y direction derivative vector used to compute the sampling locations
* offset
* The optional texel offset applied to the unnormalized texture coordinate before sampling the texture.
* This offset is applied before applying any texture wrapping modes.
* The offset expression must be a creation-time expression (e.g. vec2<i32>(1, 2)).
* Each offset component must be at least -8 and at most 7.
Values outside of this range will result in a shader-creation error.
`
)
.paramsSubcasesOnly(u =>
u
.combine('S', ['clamp-to-edge', 'repeat', 'mirror-repeat'])
.combine('coords', generateCoordBoundaries(2))
.combine('offset', generateOffsets(2))
)
.unimplemented();
g.test('sampled_3d_coords')
.specURL('https://www.w3.org/TR/WGSL/#texturesamplegrad')
.desc(
`
fn textureSampleGrad(t: texture_3d<f32>, s: sampler, coords: vec3<f32>, ddx: vec3<f32>, ddy: vec3<f32>) -> vec4<f32>
fn textureSampleGrad(t: texture_3d<f32>, s: sampler, coords: vec3<f32>, ddx: vec3<f32>, ddy: vec3<f32>, offset: vec3<i32>) -> vec4<f32>
fn textureSampleGrad(t: texture_cube<f32>, s: sampler, coords: vec3<f32>, ddx: vec3<f32>, ddy: vec3<f32>) -> vec4<f32>
Parameters:
* t The sampled texture.
* s The sampler type.
* ddx The x direction derivative vector used to compute the sampling locations
* ddy The y direction derivative vector used to compute the sampling locations
* coords The texture coordinates used for sampling.
* offset
* The optional texel offset applied to the unnormalized texture coordinate before sampling the texture.
* This offset is applied before applying any texture wrapping modes.
* The offset expression must be a creation-time expression (e.g. vec2<i32>(1, 2)).
* Each offset component must be at least -8 and at most 7.
Values outside of this range will result in a shader-creation error.
`
)
.paramsSubcasesOnly(u =>
u
.combine('S', ['clamp-to-edge', 'repeat', 'mirror-repeat'])
.combine('coords', generateCoordBoundaries(3))
.combine('offset', generateOffsets(3))
)
.unimplemented();
g.test('sampled_array_2d_coords')
.specURL('https://www.w3.org/TR/WGSL/#texturesamplegrad')
.desc(
`
C is i32 or u32
fn textureSampleGrad(t: texture_2d_array<f32>, s: sampler, coords: vec2<f32>, array_index: C, ddx: vec2<f32>, ddy: vec2<f32>) -> vec4<f32>
fn textureSampleGrad(t: texture_2d_array<f32>, s: sampler, coords: vec2<f32>, array_index: C, ddx: vec2<f32>, ddy: vec2<f32>, offset: vec2<i32>) -> vec4<f32>
Parameters:
* t The sampled texture.
* s The sampler type.
* coords The texture coordinates used for sampling.
* array_index The 0-based texture array index to sample.
* ddx The x direction derivative vector used to compute the sampling locations
* ddy The y direction derivative vector used to compute the sampling locations
* offset
* The optional texel offset applied to the unnormalized texture coordinate before sampling the texture.
* This offset is applied before applying any texture wrapping modes.
* The offset expression must be a creation-time expression (e.g. vec2<i32>(1, 2)).
* Each offset component must be at least -8 and at most 7.
Values outside of this range will result in a shader-creation error.
`
)
.paramsSubcasesOnly(u =>
u
.combine('S', ['clamp-to-edge', 'repeat', 'mirror-repeat'])
.combine('C', ['i32', 'u32'] as const)
.combine('C_value', [-1, 0, 1, 2, 3, 4] as const)
.combine('coords', generateCoordBoundaries(2))
/* array_index not param'd as out-of-bounds is implementation specific */
.combine('offset', generateOffsets(2))
)
.unimplemented();
g.test('sampled_array_3d_coords')
.specURL('https://www.w3.org/TR/WGSL/#texturesamplegrad')
.desc(
`
C is i32 or u32
fn textureSampleGrad(t: texture_cube_array<f32>, s: sampler, coords: vec3<f32>, array_index: C, ddx: vec3<f32>, ddy: vec3<f32>) -> vec4<f32>
Parameters:
* t The sampled texture.
* s The sampler type.
* coords The texture coordinates used for sampling.
* array_index The 0-based texture array index to sample.
* ddx The x direction derivative vector used to compute the sampling locations
* ddy The y direction derivative vector used to compute the sampling locations
* offset
* The optional texel offset applied to the unnormalized texture coordinate before sampling the texture.
* This offset is applied before applying any texture wrapping modes.
* The offset expression must be a creation-time expression (e.g. vec2<i32>(1, 2)).
* Each offset component must be at least -8 and at most 7.
Values outside of this range will result in a shader-creation error.
`
)
.paramsSubcasesOnly(u =>
u
.combine('S', ['clamp-to-edge', 'repeat', 'mirror-repeat'])
.combine('C', ['i32', 'u32'] as const)
.combine('C_value', [-1, 0, 1, 2, 3, 4] as const)
.combine('coords', generateCoordBoundaries(3))
)
.unimplemented();
|
