mirror of
https://codeberg.org/ziglang/zig.git
synced 2026-10-28 19:00:52 +08:00
Ali Cheraghi
14d5da9164
This would raise a validation error when the parameter type is a non-Function opaque pointer. e.g. an `@extern(*addrspace(.constant) const SampledImage, ...)`
43 lines
1.4 KiB
Zig
43 lines
1.4 KiB
Zig
pub const Image = @SpirvType(.{ .image = .{
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.usage = .{ .sampled = f32 },
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.format = .unknown,
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.dim = .@"2d",
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.depth = .not_depth,
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.arrayed = false,
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.multisampled = false,
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.access = .unknown,
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} });
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pub const SampledImage = @SpirvType(.{ .sampled_image = Image });
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const image_in = @extern(*addrspace(.constant) const SampledImage, .{
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.name = "image_in",
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.decoration = .{ .descriptor = .{ .set = 2, .binding = 0 } },
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});
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const uv_in = @extern(*addrspace(.input) @Vector(2, f32), .{ .name = "uv", .decoration = .{ .location = 0 } });
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const color_out = @extern(*addrspace(.output) @Vector(4, f32), .{ .name = "color", .decoration = .{ .location = 0 } });
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export fn main() callconv(.{ .spirv_fragment = .{} }) void {
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color_out.* = imageSample(image_in, uv_in.*);
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}
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fn imageSample(
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sampled_image: *addrspace(.constant) const SampledImage,
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uv: @Vector(2, f32),
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) @Vector(4, f32) {
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return asm volatile (
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\\%loaded_sampler = OpLoad %SampledImage %sampled_image
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\\%ret = OpImageSampleImplicitLod %Result %loaded_sampler %uv
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: [ret] "" (-> @Vector(4, f32)),
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: [SampledImage] "t" (SampledImage),
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[sampled_image] "" (sampled_image),
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[Result] "t" (@Vector(4, f32)),
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[uv] "" (uv),
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);
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}
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// compile
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// output_mode=Exe
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// backend=selfhosted
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// target=spirv32-vulkan
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// emit_bin=true
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