1 files changed, 136 insertions, 0 deletions
diff --git a/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/textureSampleGrad.spec.ts b/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/textureSampleGrad.spec.ts
new file mode 100644
index 0000000000..e0d754ece3
--- /dev/null
+++ b/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/textureSampleGrad.spec.ts
@@ -0,0 +1,136 @@
+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();