gpu blur real

// Test 819: GLSL Code in |gpu Proc Body
//
// Tests that the parser can handle ACTUAL GLSL shader code
// inside a |gpu proc variant. The GLSL is treated as opaque
// text by the Koru parser (just like any other proc body).
//
// What this tests:
// ✅ Parser accepts GLSL syntax in proc body
// ✅ GLSL keywords (#version, layout, void, etc.) don't break parser
// ✅ Proc with |gpu variant emits correctly
//
// What this does NOT test:
// ❌ Compiling GLSL → SPIR-V (that's test 820)
// ❌ Wrapper generation (that's test 821)
// ❌ GPU execution (future)

const std = @import("std");

~pub event compute { }
| done { }

~proc compute|gpu {
    #version 450

    layout(local_size_x = 16) in;

    layout(binding = 0) buffer Data {
        float values[];
    } data;

    void main() {
        uint idx = gl_GlobalInvocationID.x;
        data.values[idx] = data.values[idx] * 2.0;
    }
}