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[msl-out] Introduce a per-entry-point resource binding map option
The existing `per_stage_map` field of MSL backend options specifies resource binding maps that apply to all entry points of each stage type. It is useful to have the ability to provide a separate binding index map for each entry point, especially when the same shader module defines multiple entry points of the same stage kind. This patch introduces a new per-entry-point mapping option. When fields are missing in the per-entry-point map, the code falls back to the existing `per_stage_map` option as before.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| ( | ||
| god_mode: true, | ||
| msl: ( | ||
| lang_version: (2, 0), | ||
| per_stage_map: ( | ||
| fs: ( | ||
| resources: { | ||
| (group: 0, binding: 0): (texture: Some(0)), | ||
| (group: 0, binding: 1): (sampler: Some(Inline(0))), | ||
| }, | ||
| ) | ||
| ), | ||
| per_entry_point_map: Some({ | ||
| "entry_point_two": ( | ||
| resources: { | ||
| (group: 0, binding: 0): (texture: Some(1)), | ||
| (group: 0, binding: 1): (sampler: Some(Resource(1))), | ||
| (group: 0, binding: 2): (buffer: Some(0)), | ||
| } | ||
| ), | ||
| "entry_point_three": ( | ||
| resources: { | ||
| (group: 0, binding: 2): (buffer: Some(0)), | ||
| (group: 1, binding: 0): (buffer: Some(1)), | ||
| } | ||
| ) | ||
| }), | ||
| inline_samplers: [ | ||
| ( | ||
| coord: Normalized, | ||
| address: (ClampToEdge, ClampToEdge, ClampToEdge), | ||
| mag_filter: Linear, | ||
| min_filter: Linear, | ||
| mip_filter: None, | ||
| border_color: TransparentBlack, | ||
| compare_func: Never, | ||
| lod_clamp: Some((start: 0.5, end: 10.0)), | ||
| max_anisotropy: Some(8), | ||
| ), | ||
| ], | ||
| spirv_cross_compatibility: false, | ||
| fake_missing_bindings: false, | ||
| zero_initialize_workgroup_memory: true, | ||
| ), | ||
| bounds_check_policies: ( | ||
| index: ReadZeroSkipWrite, | ||
| buffer: ReadZeroSkipWrite, | ||
| image: ReadZeroSkipWrite, | ||
| ) | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| @group(0) @binding(0) var t: texture_2d<f32>; | ||
| @group(0) @binding(1) var s: sampler; | ||
|
|
||
| @group(0) @binding(2) var<uniform> uniformOne: vec2<f32>; | ||
| @group(1) @binding(0) var<uniform> uniformTwo: vec2<f32>; | ||
|
|
||
| @fragment | ||
| fn entry_point_one(@builtin(position) pos: vec4<f32>) -> @location(0) vec4<f32> { | ||
| return textureSample(t, s, pos.xy); | ||
| } | ||
|
|
||
| @fragment | ||
| fn entry_point_two() -> @location(0) vec4<f32> { | ||
| return textureSample(t, s, uniformOne); | ||
| } | ||
|
|
||
| @fragment | ||
| fn entry_point_three() -> @location(0) vec4<f32> { | ||
| return textureSample(t, s, uniformTwo + uniformOne); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| // language: metal2.0 | ||
| #include <metal_stdlib> | ||
| #include <simd/simd.h> | ||
|
|
||
| using metal::uint; | ||
|
|
||
| struct DefaultConstructible { | ||
| template<typename T> | ||
| operator T() && { | ||
| return T {}; | ||
| } | ||
| }; | ||
|
|
||
| struct entry_point_oneInput { | ||
| }; | ||
| struct entry_point_oneOutput { | ||
| metal::float4 member [[color(0)]]; | ||
| }; | ||
| fragment entry_point_oneOutput entry_point_one( | ||
| metal::float4 pos [[position]] | ||
| , metal::texture2d<float, metal::access::sample> t [[texture(0)]] | ||
| ) { | ||
| constexpr metal::sampler s( | ||
| metal::s_address::clamp_to_edge, | ||
| metal::t_address::clamp_to_edge, | ||
| metal::r_address::clamp_to_edge, | ||
| metal::mag_filter::linear, | ||
| metal::min_filter::linear, | ||
| metal::coord::normalized | ||
| ); | ||
| metal::float4 _e4 = t.sample(s, pos.xy); | ||
| return entry_point_oneOutput { _e4 }; | ||
| } | ||
|
|
||
|
|
||
| struct entry_point_twoOutput { | ||
| metal::float4 member_1 [[color(0)]]; | ||
| }; | ||
| fragment entry_point_twoOutput entry_point_two( | ||
| metal::texture2d<float, metal::access::sample> t [[texture(1)]] | ||
| , metal::sampler s [[sampler(1)]] | ||
| , constant metal::float2& uniformOne [[buffer(0)]] | ||
| ) { | ||
| metal::float2 _e3 = uniformOne; | ||
| metal::float4 _e4 = t.sample(s, _e3); | ||
| return entry_point_twoOutput { _e4 }; | ||
| } | ||
|
|
||
|
|
||
| struct entry_point_threeOutput { | ||
| metal::float4 member_2 [[color(0)]]; | ||
| }; | ||
| fragment entry_point_threeOutput entry_point_three( | ||
| metal::texture2d<float, metal::access::sample> t [[texture(0)]] | ||
| , constant metal::float2& uniformOne [[buffer(0)]] | ||
| , constant metal::float2& uniformTwo [[buffer(1)]] | ||
| ) { | ||
| constexpr metal::sampler s( | ||
| metal::s_address::clamp_to_edge, | ||
| metal::t_address::clamp_to_edge, | ||
| metal::r_address::clamp_to_edge, | ||
| metal::mag_filter::linear, | ||
| metal::min_filter::linear, | ||
| metal::coord::normalized | ||
| ); | ||
| metal::float2 _e3 = uniformTwo; | ||
| metal::float2 _e5 = uniformOne; | ||
| metal::float4 _e7 = t.sample(s, _e3 + _e5); | ||
| return entry_point_threeOutput { _e7 }; | ||
| } |
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