seeddsandb4f8abbb24dbf56a7d0280f296e16eeb
c3a0880304
Apply the generalized image-atomic bounds and backing checks from PR #178. Also reject unsupported descriptor formats before integer fallback and fail unresolved bindless atomics instead of silently deleting them. Rebuild the translator and record chain 467efdfd0b62, with regression tests and findings. Validation: compiler/helper and sanitizer tests, 96 Metal compile/link checks, ten GPU probes, all 28,603 Z-A shaders for Mac and iPhone, and a 240-second Mac station-area run reaching 6,987 frames without a freeze or GPU fault. Reported iPhone cases and the station-to-world transition remain unverified. Co-authored-by: b4f8abbb24dbf56a7d0280f296e16eeb <51352400+b4f8abbb24dbf56a7d0280f296e16eeb@users.noreply.github.com>
34 lines
1.6 KiB
C
34 lines
1.6 KiB
C
// Admission for the packed 32-bit IMG/IMGA contract, independent of Metal.
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#pragma once
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#include <stdint.h>
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static inline int nvn_imga_bytes(uint64_t w, uint64_t h, uint64_t layers, uint64_t *out) {
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if (!out || !w || !h || !layers || w > UINT32_MAX || h > UINT32_MAX || layers > UINT32_MAX ||
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w > UINT64_MAX / h || w * h > UINT64_MAX / layers || w * h * layers > UINT64_MAX / 4) return 0;
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*out = w * h * layers * 4;
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return 1;
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}
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static inline int nvn_imga_capacity(uint64_t need, uint64_t length, uint64_t offset) {
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return need && offset <= length && need <= length - offset;
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}
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static inline int nvn_imga_scratch_length(uint64_t need, uint64_t *out) {
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const uint64_t mask = (1u << 20) - 1;
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if (!out || !need || need > UINT64_MAX - mask) return 0;
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*out = (need + mask) & ~mask;
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return 1;
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}
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typedef struct {
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uint64_t width, height, layers, row_bytes;
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uint64_t buffer_length, texture_offset, pointer_offset, guest_bytes;
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unsigned word_bytes;
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int buffer_texture, base_view, same_buffer;
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} nvn_imga_direct_layout;
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static inline int nvn_imga_direct_ok(const nvn_imga_direct_layout *d) {
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uint64_t need;
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if (!d || !d->base_view || !d->same_buffer || d->word_bytes != 4 || d->layers != 1 ||
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!nvn_imga_bytes(d->width, d->height, d->layers, &need) || d->texture_offset != d->pointer_offset ||
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d->texture_offset % 4 || !nvn_imga_capacity(need, d->buffer_length, d->texture_offset) || need > d->guest_bytes) return 0;
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// Buffer textures have no next row: Metal may pad their unused row length.
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return d->buffer_texture ? d->height == 1 : d->row_bytes == d->width * 4;
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}
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