From b481d8a00d5f09e091e03ed4b7c4d9f9652e0969 Mon Sep 17 00:00:00 2001 From: Subv Date: Sat, 2 Jun 2018 14:45:50 -0500 Subject: GPU: Partially implemented the shader BRA instruction. --- src/video_core/engines/shader_bytecode.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'src/video_core/engines') diff --git a/src/video_core/engines/shader_bytecode.h b/src/video_core/engines/shader_bytecode.h index 61643e086..a57b90632 100644 --- a/src/video_core/engines/shader_bytecode.h +++ b/src/video_core/engines/shader_bytecode.h @@ -288,6 +288,19 @@ union Instruction { } } texs; + union { + BitField<20, 5, u64> target; + BitField<5, 1, u64> constant_buffer; + + s32 GetBranchTarget() const { + // Sign extend the branch target offset + u32 mask = 1U << (5 - 1); + u32 value = static_cast(target); + // The branch offset is relative to the next instruction, so add 1 to it. + return static_cast((value ^ mask) - mask) + 1; + } + } bra; + BitField<61, 1, u64> is_b_imm; BitField<60, 1, u64> is_b_gpr; BitField<59, 1, u64> is_c_gpr; -- cgit v1.2.3