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glsl: Add immediate index oob checking for Cbuf getters
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1 changed files with 16 additions and 0 deletions
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@ -38,6 +38,15 @@ void GetCbuf(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, const I
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u32 num_bits, std::string_view cast = {}, bool component_indexing_bug = false,
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std::string_view bit_offset = {}) {
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const bool is_immediate{offset.IsImmediate()};
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if (is_immediate) {
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const s32 signed_offset{static_cast<s32>(offset.U32())};
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static constexpr u32 cbuf_size{4096 * 16};
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if (signed_offset < 0 || offset.U32() > cbuf_size) {
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// LOG_WARNING(..., "Immediate constant buffer offset is out of bounds");
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ctx.AddU32("{}=0u;", inst);
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return;
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}
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}
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const auto offset_var{ctx.var_alloc.Consume(offset)};
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const auto index{is_immediate ? fmt::format("{}", offset.U32() / 16)
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: fmt::format("{}>>4", offset_var)};
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@ -124,7 +133,14 @@ void EmitGetCbufU32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding
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const IR::Value& offset) {
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const auto cbuf{fmt::format("{}_cbuf{}", ctx.stage_name, binding.U32())};
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if (offset.IsImmediate()) {
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static constexpr u32 cbuf_size{4096 * 16};
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const u32 u32_offset{offset.U32()};
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const s32 signed_offset{static_cast<s32>(offset.U32())};
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if (signed_offset < 0 || u32_offset > cbuf_size) {
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// LOG_WARNING(..., "Immediate constant buffer offset is out of bounds");
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ctx.AddU32x2("{}=uvec2(0u);", inst);
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return;
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}
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if (u32_offset % 2 == 0) {
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ctx.AddU32x2("{}=ftou({}[{}].{}{});", inst, cbuf, u32_offset / 16,
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OffsetSwizzle(u32_offset), OffsetSwizzle(u32_offset + 4));
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