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shader: load bytes and halfwords from GPU-selected buffers

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Co-authored-by: fxpw <fxpw@outlook.com>
This commit is contained in:
nmzik
2026-10-14 04:35:21 +02:00
parent 8d18be71db
commit 7bba785963
5 changed files with 98 additions and 18 deletions
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src/graphics/shader/recompiler/ir/Program.cpp
+2 -1
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@@ -471,7 +471,8 @@ void ValidateProgram(const Program& program, bool require_ssa) {
}
if (memory.kind == ResourceKind::IndirectBuffer &&
!memory.SupportsIndirectBufferLoad(inst.GetOpcode())) {
return Fail("indirect buffer requires a scalar, raw DWORD x1/x2/x3/x4, or formatted X load");
return Fail("indirect buffer requires a scalar, raw 8/16-bit, raw DWORD x1/x2/x3/x4, "
"or formatted X load");
}
const bool packed_formatted_load =
BufferAccessOf(inst.GetOpcode()) == BufferAccess::Read && memory.formatted &&
src/graphics/shader/recompiler/ir/ShaderIR.h
+4 -1
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@@ -83,7 +83,10 @@ struct MemoryInfo {
bool planning_only = false;
[[nodiscard]] bool SupportsIndirectBufferLoad(ValueOpcode opcode) const {
return !typed && data_bits == 32u &&
if (typed) return false;
if (data_bits == 8u) return !formatted && opcode == ValueOpcode::LoadBufferU8;
if (data_bits == 16u) return !formatted && opcode == ValueOpcode::LoadBufferU16;
return data_bits == 32u &&
(formatted ? opcode == ValueOpcode::LoadBufferU32
: opcode == ValueOpcode::ReadConstBuffer ||
opcode == ValueOpcode::LoadBufferU32 ||
src/graphics/shader/recompiler/ir/passes/ResourceTracking.cpp
+1 -1
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@@ -3372,7 +3372,7 @@ private:
!memory.SupportsIndirectBufferLoad(op)) {
Fail(flags.pc,
"buffer descriptor is not a valid runtime value; GPU-selected access "
"requires a scalar, raw DWORD x1/x2/x3/x4, or formatted X load");
"requires a scalar, raw 8/16-bit, raw DWORD x1/x2/x3/x4, or formatted X load");
}
m_program.memory_info[flags.index].kind = ResourceKind::IndirectBuffer;
m_info.uses_dma = true;