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export const description = `
Execution tests for the 'textureSampleBias' builtin function
Samples a texture with a bias to the mip level.
Must only be used in a fragment shader stage.
Must only be invoked in uniform control flow.
`;
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('stage')
.specURL('https://www.w3.org/TR/WGSL/#texturesamplebias')
.desc(
`
Tests that 'textureSampleBias' can only be called in 'fragment' shaders.
`
)
.params(u => u.combine('stage', ['fragment', 'vertex', 'compute'] as const))
.unimplemented();
g.test('control_flow')
.specURL('https://www.w3.org/TR/WGSL/#texturesamplebias')
.desc(
`
Tests that 'textureSampleBias' can only be called in uniform control flow.
`
)
.params(u => u.combine('stage', ['fragment', 'vertex', 'compute'] as const))
.unimplemented();
g.test('sampled_2d_coords')
.specURL('https://www.w3.org/TR/WGSL/#texturesamplebias')
.desc(
`
fn textureSampleBias(t: texture_2d<f32>, s: sampler, coords: vec2<f32>, bias: f32) -> vec4<f32>
fn textureSampleBias(t: texture_2d<f32>, s: sampler, coords: vec2<f32>, bias: f32, offset: vec2<i32>) -> vec4<f32>
Parameters:
* t: The sampled texture to read from
* s: The sampler type
* coords: The texture coordinates
* bias: The bias to apply to the mip level before sampling. bias must be between -16.0 and 15.99.
* 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('bias', [-16.1, -16, 0, 1, 15.99, 16] as const)
.combine('offset', generateOffsets(2))
)
.unimplemented();
g.test('sampled_3d_coords')
.specURL('https://www.w3.org/TR/WGSL/#texturesamplebias')
.desc(
`
fn textureSampleBias(t: texture_3d<f32>, s: sampler, coords: vec3<f32>, bias: f32) -> vec4<f32>
fn textureSampleBias(t: texture_3d<f32>, s: sampler, coords: vec3<f32>, bias: f32, offset: vec3<i32>) -> vec4<f32>
fn textureSampleBias(t: texture_cube<f32>, s: sampler, coords: vec3<f32>, bias: f32) -> vec4<f32>
Parameters:
* t: The sampled texture to read from
* s: The sampler type
* coords: The texture coordinates
* bias: The bias to apply to the mip level before sampling. bias must be between -16.0 and 15.99.
* 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.
`
)
.params(u =>
u
.combine('texture_type', ['texture_3d', 'texture_cube'] as const)
.beginSubcases()
.combine('S', ['clamp-to-edge', 'repeat', 'mirror-repeat'])
.combine('coords', generateCoordBoundaries(3))
.combine('bias', [-16.1, -16, 0, 1, 15.99, 16] as const)
.combine('offset', generateOffsets(3))
)
.unimplemented();
g.test('arrayed_2d_coords')
.specURL('https://www.w3.org/TR/WGSL/#texturesamplebias')
.desc(
`
C: i32, u32
fn textureSampleBias(t: texture_2d_array<f32>, s: sampler, coords: vec2<f32>, array_index: C, bias: f32) -> vec4<f32>
fn textureSampleBias(t: texture_2d_array<f32>, s: sampler, coords: vec2<f32>, array_index: C, bias: f32, offset: vec2<i32>) -> vec4<f32>
Parameters:
* t: The sampled texture to read from
* s: The sampler type
* coords: The texture coordinates
* array_index: The 0-based texture array index to sample.
* bias: The bias to apply to the mip level before sampling. bias must be between -16.0 and 15.99.
* 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('C', ['i32', 'u32'] as const)
.combine('C_value', [-1, 0, 1, 2, 3, 4] as const)
/* array_index not param'd as out-of-bounds is implementation specific */
.combine('bias', [-16.1, -16, 0, 1, 15.99, 16] as const)
.combine('offset', generateOffsets(2))
)
.unimplemented();
g.test('arrayed_3d_coords')
.specURL('https://www.w3.org/TR/WGSL/#texturesamplebias')
.desc(
`
C: i32, u32
fn textureSampleBias(t: texture_cube_array<f32>, s: sampler, coords: vec3<f32>, array_index: C, bias: f32) -> vec4<f32>
Parameters:
* t: The sampled texture to read from
* s: The sampler type
* coords: The texture coordinates
* array_index: The 0-based texture array index to sample.
* bias: The bias to apply to the mip level before sampling. bias must be between -16.0 and 15.99.
* 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('C', ['i32', 'u32'] as const)
.combine('C_value', [-1, 0, 1, 2, 3, 4] as const)
/* array_index not param'd as out-of-bounds is implementation specific */
.combine('bias', [-16.1, -16, 0, 1, 15.99, 16] as const)
)
.unimplemented();
|
