third_party_mesa3d/src/amd/common/ac_shader_abi.h

/*
 * Copyright 2017 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * on the rights to use, copy, modify, merge, publish, distribute, sub
 * license, and/or sell copies of the Software, and to permit persons to whom
 * the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef AC_SHADER_ABI_H
#define AC_SHADER_ABI_H

#include <llvm-c/Core.h>

/* Document the shader ABI during compilation. This is what allows radeonsi and
 * radv to share a compiler backend.
 */
struct ac_shader_abi {
	enum chip_class chip_class;

	LLVMValueRef base_vertex;
	LLVMValueRef start_instance;
	LLVMValueRef draw_id;
	LLVMValueRef vertex_id;
	LLVMValueRef instance_id;

	/* For VS and PS: pre-loaded shader inputs.
	 *
	 * Currently only used for NIR shaders; indexed by variables'
	 * driver_location.
	 */
	LLVMValueRef *inputs;

	void (*emit_outputs)(struct ac_shader_abi *abi,
			     unsigned max_outputs,
			     LLVMValueRef *addrs);

	LLVMValueRef (*load_ubo)(struct ac_shader_abi *abi, LLVMValueRef index);
};

#endif /* AC_SHADER_ABI_H */