fixing runtime array access chain
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This commit is contained in:
2026-04-29 23:52:07 +02:00
parent 11a59d8d7f
commit ce17209004
2 changed files with 244 additions and 83 deletions
+132 -39
View File
@@ -1304,9 +1304,6 @@ fn opAccessChain(allocator: std.mem.Allocator, word_count: SpvWord, rt: *Runtime
const base = &rt.results[base_id];
var value_ptr = try base.getValue();
var arena = std.heap.ArenaAllocator.init(allocator);
defer arena.deinit();
const index_count: usize = @intCast(word_count - 3);
const indexes, const free_responsability = blk: {
@@ -1332,11 +1329,38 @@ fn opAccessChain(allocator: std.mem.Allocator, word_count: SpvWord, rt: *Runtime
.base = base_id,
.indexes = indexes,
.value = blk: {
var is_owner_of_uniform_slice = false;
const helpers = struct {
fn advanceWindow(window: ?[]u8, offset: usize) RuntimeError!?[]u8 {
if (window) |w| {
if (offset > w.len) return RuntimeError.OutOfBounds;
return w[offset..];
}
return null;
}
fn advanceWindowSized(window: ?[]u8, offset: usize, size: usize) RuntimeError!?[]u8 {
if (window) |w| {
if (offset > w.len or size > w.len - offset) return RuntimeError.OutOfBounds;
return w[offset .. offset + size];
}
return null;
}
};
var uniform_slice_window: ?[]u8 = null;
var uniform_backing_value: ?*Value = null;
if (std.meta.activeTag(value_ptr.*) == .Pointer) {
const ptr = value_ptr.Pointer;
uniform_slice_window = ptr.uniform_slice_window;
uniform_backing_value = ptr.uniform_backing_value;
switch (ptr.ptr) {
.common => |common| value_ptr = common,
else => return RuntimeError.InvalidSpirV,
}
}
for (0..index_count) |index| {
const is_last = (index == index_count - 1);
const index_id = try rt.it.next();
indexes[index] = index_id;
const member = &rt.results[index_id];
@@ -1349,63 +1373,135 @@ fn opAccessChain(allocator: std.mem.Allocator, word_count: SpvWord, rt: *Runtime
switch (member_value.*) {
.Int => |i| {
if (std.meta.activeTag(value_ptr.*) == .Pointer) {
value_ptr = value_ptr.Pointer.ptr.common; // Don't know if I should check for specialized pointers
const ptr = value_ptr.Pointer;
uniform_slice_window = ptr.uniform_slice_window;
uniform_backing_value = ptr.uniform_backing_value;
switch (ptr.ptr) {
.common => |common| value_ptr = common,
else => return RuntimeError.InvalidSpirV,
}
}
const component_index: usize = @intCast(i.value.uint32);
switch (value_ptr.*) {
.Vector, .Matrix => |v| {
if (i.value.uint32 >= v.len) return RuntimeError.OutOfBounds;
value_ptr = &v[i.value.uint32];
if (component_index >= v.len) return RuntimeError.OutOfBounds;
var offset: usize = 0;
for (v[0..component_index]) |*element| {
offset += try element.getPlainMemorySize();
}
uniform_slice_window = try helpers.advanceWindow(uniform_slice_window, offset);
value_ptr = &v[component_index];
},
.Array => |a| {
if (i.value.uint32 >= a.values.len) return RuntimeError.OutOfBounds;
value_ptr = &a.values[i.value.uint32];
if (component_index >= a.values.len) return RuntimeError.OutOfBounds;
uniform_slice_window = try helpers.advanceWindow(uniform_slice_window, component_index * a.stride);
value_ptr = &a.values[component_index];
},
.Structure => |s| {
if (i.value.uint32 >= s.values.len) return RuntimeError.OutOfBounds;
value_ptr = &s.values[i.value.uint32];
if (component_index >= s.values.len) return RuntimeError.OutOfBounds;
var end_offset: usize = 0;
for (s.values[0..component_index], 0..) |*field, field_index| {
const field_offset: usize = @intCast(s.offsets[field_index] orelse end_offset);
end_offset = @max(end_offset, field_offset + try field.getPlainMemorySize());
}
const member_offset: usize = @intCast(s.offsets[component_index] orelse end_offset);
uniform_slice_window = try helpers.advanceWindow(uniform_slice_window, member_offset);
value_ptr = &s.values[component_index];
},
.RuntimeArray => |*arr| {
if (i.value.uint32 >= arr.getLen()) return RuntimeError.OutOfBounds;
value_ptr = try arr.createValueFromIndex(if (is_last) allocator else arena.allocator(), rt.results, i.value.uint32);
if (is_last)
is_owner_of_uniform_slice = true;
uniform_slice_window = arr.data[arr.getOffsetOfIndex(i.value.uint32)..];
if (component_index >= arr.getLen()) return RuntimeError.OutOfBounds;
const element_offset = arr.getOffsetOfIndex(component_index);
if (element_offset > arr.data.len or arr.stride > arr.data.len - element_offset)
return RuntimeError.OutOfBounds;
const backing = try arr.createValueFromIndex(allocator, rt.results, component_index);
errdefer {
backing.deinit(allocator);
allocator.destroy(backing);
}
if (uniform_backing_value) |old_backing| {
old_backing.deinit(allocator);
allocator.destroy(old_backing);
}
value_ptr = backing;
uniform_backing_value = backing;
uniform_slice_window = arr.data[element_offset .. element_offset + arr.stride];
},
.Vector4f32 => |*v| switch (i.value.uint32) {
inline 0...3 => |idx| break :blk .{ .Pointer = .{ .ptr = .{ .f32_ptr = &v[idx] } } },
.Vector4f32 => |*v| switch (component_index) {
inline 0...3 => |idx| break :blk .{ .Pointer = .{
.ptr = .{ .f32_ptr = &v[idx] },
.uniform_slice_window = try helpers.advanceWindowSized(uniform_slice_window, idx * @sizeOf(f32), @sizeOf(f32)),
.uniform_backing_value = uniform_backing_value,
} },
else => return RuntimeError.InvalidSpirV,
},
.Vector3f32 => |*v| switch (i.value.uint32) {
inline 0...2 => |idx| break :blk .{ .Pointer = .{ .ptr = .{ .f32_ptr = &v[idx] } } },
.Vector3f32 => |*v| switch (component_index) {
inline 0...2 => |idx| break :blk .{ .Pointer = .{
.ptr = .{ .f32_ptr = &v[idx] },
.uniform_slice_window = try helpers.advanceWindowSized(uniform_slice_window, idx * @sizeOf(f32), @sizeOf(f32)),
.uniform_backing_value = uniform_backing_value,
} },
else => return RuntimeError.InvalidSpirV,
},
.Vector2f32 => |*v| switch (i.value.uint32) {
inline 0...1 => |idx| break :blk .{ .Pointer = .{ .ptr = .{ .f32_ptr = &v[idx] } } },
.Vector2f32 => |*v| switch (component_index) {
inline 0...1 => |idx| break :blk .{ .Pointer = .{
.ptr = .{ .f32_ptr = &v[idx] },
.uniform_slice_window = try helpers.advanceWindowSized(uniform_slice_window, idx * @sizeOf(f32), @sizeOf(f32)),
.uniform_backing_value = uniform_backing_value,
} },
else => return RuntimeError.InvalidSpirV,
},
.Vector4i32 => |*v| switch (i.value.uint32) {
inline 0...3 => |idx| break :blk .{ .Pointer = .{ .ptr = .{ .i32_ptr = &v[idx] } } },
.Vector4i32 => |*v| switch (component_index) {
inline 0...3 => |idx| break :blk .{ .Pointer = .{
.ptr = .{ .i32_ptr = &v[idx] },
.uniform_slice_window = try helpers.advanceWindowSized(uniform_slice_window, idx * @sizeOf(i32), @sizeOf(i32)),
.uniform_backing_value = uniform_backing_value,
} },
else => return RuntimeError.InvalidSpirV,
},
.Vector3i32 => |*v| switch (i.value.uint32) {
inline 0...2 => |idx| break :blk .{ .Pointer = .{ .ptr = .{ .i32_ptr = &v[idx] } } },
.Vector3i32 => |*v| switch (component_index) {
inline 0...2 => |idx| break :blk .{ .Pointer = .{
.ptr = .{ .i32_ptr = &v[idx] },
.uniform_slice_window = try helpers.advanceWindowSized(uniform_slice_window, idx * @sizeOf(i32), @sizeOf(i32)),
.uniform_backing_value = uniform_backing_value,
} },
else => return RuntimeError.InvalidSpirV,
},
.Vector2i32 => |*v| switch (i.value.uint32) {
inline 0...1 => |idx| break :blk .{ .Pointer = .{ .ptr = .{ .i32_ptr = &v[idx] } } },
.Vector2i32 => |*v| switch (component_index) {
inline 0...1 => |idx| break :blk .{ .Pointer = .{
.ptr = .{ .i32_ptr = &v[idx] },
.uniform_slice_window = try helpers.advanceWindowSized(uniform_slice_window, idx * @sizeOf(i32), @sizeOf(i32)),
.uniform_backing_value = uniform_backing_value,
} },
else => return RuntimeError.InvalidSpirV,
},
.Vector4u32 => |*v| switch (i.value.uint32) {
inline 0...3 => |idx| break :blk .{ .Pointer = .{ .ptr = .{ .u32_ptr = &v[idx] } } },
.Vector4u32 => |*v| switch (component_index) {
inline 0...3 => |idx| break :blk .{ .Pointer = .{
.ptr = .{ .u32_ptr = &v[idx] },
.uniform_slice_window = try helpers.advanceWindowSized(uniform_slice_window, idx * @sizeOf(u32), @sizeOf(u32)),
.uniform_backing_value = uniform_backing_value,
} },
else => return RuntimeError.InvalidSpirV,
},
.Vector3u32 => |*v| switch (i.value.uint32) {
inline 0...2 => |idx| break :blk .{ .Pointer = .{ .ptr = .{ .u32_ptr = &v[idx] } } },
.Vector3u32 => |*v| switch (component_index) {
inline 0...2 => |idx| break :blk .{ .Pointer = .{
.ptr = .{ .u32_ptr = &v[idx] },
.uniform_slice_window = try helpers.advanceWindowSized(uniform_slice_window, idx * @sizeOf(u32), @sizeOf(u32)),
.uniform_backing_value = uniform_backing_value,
} },
else => return RuntimeError.InvalidSpirV,
},
.Vector2u32 => |*v| switch (i.value.uint32) {
inline 0...1 => |idx| break :blk .{ .Pointer = .{ .ptr = .{ .u32_ptr = &v[idx] } } },
.Vector2u32 => |*v| switch (component_index) {
inline 0...1 => |idx| break :blk .{ .Pointer = .{
.ptr = .{ .u32_ptr = &v[idx] },
.uniform_slice_window = try helpers.advanceWindowSized(uniform_slice_window, idx * @sizeOf(u32), @sizeOf(u32)),
.uniform_backing_value = uniform_backing_value,
} },
else => return RuntimeError.InvalidSpirV,
},
else => return RuntimeError.InvalidSpirV,
@@ -1417,15 +1513,14 @@ fn opAccessChain(allocator: std.mem.Allocator, word_count: SpvWord, rt: *Runtime
break :blk .{
.Pointer = .{
.ptr = .{ .common = value_ptr },
.is_owner_of_uniform_slice = is_owner_of_uniform_slice,
.uniform_slice_window = uniform_slice_window,
.uniform_backing_value = uniform_backing_value,
},
};
},
},
};
}
fn opAtomicStore(_: std.mem.Allocator, _: SpvWord, rt: *Runtime) RuntimeError!void {
const ptr_id = try rt.it.next();
_ = rt.it.skip(); // scope
@@ -1905,8 +2000,6 @@ fn opMulExtended(comptime is_signed: bool, rt: *Runtime) RuntimeError!void {
const low: UIntT = @truncate(product_bits);
const high: UIntT = @truncate(product_bits >> bits);
std.debug.print("test 0x{X} - 0x{X}\n", .{ high, low });
try writeMulExtendedBits(bits, low_dst, lane_index, low);
try writeMulExtendedBits(bits, high_dst, lane_index, high);
}