i965/vec4/nir: add nir_intrinsic_memory_barrier support
Fix OpenGL ES 3.1 conformance tests: advanced-readWrite-case1-vsfs and advanced-matrix-vsfs. v2: - Fix SHADER_OPCODE_MEMORY_FENCE emission and the allocation of 'tmp' (Francisco). Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com> Tested-by: Tapani Pälli <tapani.palli@intel.com> Reviewed-by: Francisco Jerez <currojerez@riseup.net>
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@ -921,6 +921,15 @@ vec4_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
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break;
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}
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case nir_intrinsic_memory_barrier: {
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const vec4_builder bld =
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vec4_builder(this).at_end().annotate(current_annotation, base_ir);
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const dst_reg tmp = bld.vgrf(BRW_REGISTER_TYPE_UD, 2);
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bld.emit(SHADER_OPCODE_MEMORY_FENCE, tmp)
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->regs_written = 2;
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break;
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}
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default:
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unreachable("Unknown intrinsic");
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}
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