43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
#include "../src/meshoptimizer.h"
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#include <stdint.h>
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#include <stdlib.h>
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void fuzzDecoder(const uint8_t* data, size_t size, size_t stride, int (*decode)(void*, size_t, size_t, const unsigned char*, size_t))
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{
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size_t count = 66; // must be divisible by 3 for decodeIndexBuffer; should be >=64 to cover large vertex blocks
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void* destination = malloc(count * stride);
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assert(destination);
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int rc = decode(destination, count, stride, reinterpret_cast<const unsigned char*>(data), size);
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(void)rc;
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free(destination);
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}
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namespace meshopt
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{
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extern unsigned int cpuid;
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}
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
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{
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// decodeIndexBuffer supports 2 and 4-byte indices
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fuzzDecoder(data, size, 2, meshopt_decodeIndexBuffer);
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fuzzDecoder(data, size, 4, meshopt_decodeIndexBuffer);
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// decodeIndexSequence supports 2 and 4-byte indices
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fuzzDecoder(data, size, 2, meshopt_decodeIndexSequence);
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fuzzDecoder(data, size, 4, meshopt_decodeIndexSequence);
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// decodeVertexBuffer supports any strides divisible by 4 in 4-256 interval
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// It's a waste of time to check all of them, so we'll just check a few with different alignment mod 16
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fuzzDecoder(data, size, 4, meshopt_decodeVertexBuffer);
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fuzzDecoder(data, size, 16, meshopt_decodeVertexBuffer);
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fuzzDecoder(data, size, 24, meshopt_decodeVertexBuffer);
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fuzzDecoder(data, size, 32, meshopt_decodeVertexBuffer);
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return 0;
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}
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