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/*

 * Copyright 2012 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.

 *

 * Authors:

 *	Tom Stellard 

 *	Michel Dänzer 

 *      Christian König 

 */

#ifndef SI_SHADER_H

#define SI_SHADER_H

#include  /* LLVMModuleRef */

#include "tgsi/tgsi_scan.h"

#include "si_state.h"

struct radeon_shader_binary;

struct radeon_shader_reloc;

#define SI_SGPR_RW_BUFFERS	0  /* rings (& stream-out, VS only) */

#define SI_SGPR_CONST		2

#define SI_SGPR_SAMPLER		4

#define SI_SGPR_RESOURCE	6

#define SI_SGPR_VERTEX_BUFFER	8  /* VS only */

#define SI_SGPR_BASE_VERTEX	10 /* VS only */

#define SI_SGPR_START_INSTANCE	11 /* VS only */

#define SI_SGPR_ALPHA_REF	8  /* PS only */

#define SI_VS_NUM_USER_SGPR	12

#define SI_GS_NUM_USER_SGPR	8

#define SI_GSCOPY_NUM_USER_SGPR	4

#define SI_PS_NUM_USER_SGPR	9

/* LLVM function parameter indices */

#define SI_PARAM_RW_BUFFERS	0

#define SI_PARAM_CONST		1

#define SI_PARAM_SAMPLER	2

#define SI_PARAM_RESOURCE	3

/* VS only parameters */

#define SI_PARAM_VERTEX_BUFFER	4

#define SI_PARAM_BASE_VERTEX	5

#define SI_PARAM_START_INSTANCE	6

/* the other VS parameters are assigned dynamically */

/* ES only parameters */

#define SI_PARAM_ES2GS_OFFSET	7

/* GS only parameters */

#define SI_PARAM_GS2VS_OFFSET	4

#define SI_PARAM_GS_WAVE_ID	5

#define SI_PARAM_VTX0_OFFSET	6

#define SI_PARAM_VTX1_OFFSET	7

#define SI_PARAM_PRIMITIVE_ID	8

#define SI_PARAM_VTX2_OFFSET	9

#define SI_PARAM_VTX3_OFFSET	10

#define SI_PARAM_VTX4_OFFSET	11

#define SI_PARAM_VTX5_OFFSET	12

#define SI_PARAM_GS_INSTANCE_ID	13

/* PS only parameters */

#define SI_PARAM_ALPHA_REF		4

#define SI_PARAM_PRIM_MASK		5

#define SI_PARAM_PERSP_SAMPLE		6

#define SI_PARAM_PERSP_CENTER		7

#define SI_PARAM_PERSP_CENTROID		8

#define SI_PARAM_PERSP_PULL_MODEL	9

#define SI_PARAM_LINEAR_SAMPLE		10

#define SI_PARAM_LINEAR_CENTER		11

#define SI_PARAM_LINEAR_CENTROID	12

#define SI_PARAM_LINE_STIPPLE_TEX	13

#define SI_PARAM_POS_X_FLOAT		14

#define SI_PARAM_POS_Y_FLOAT		15

#define SI_PARAM_POS_Z_FLOAT		16

#define SI_PARAM_POS_W_FLOAT		17

#define SI_PARAM_FRONT_FACE		18

#define SI_PARAM_ANCILLARY		19

#define SI_PARAM_SAMPLE_COVERAGE	20

#define SI_PARAM_POS_FIXED_PT		21

#define SI_NUM_PARAMS (SI_PARAM_POS_FIXED_PT + 1)

struct si_shader;

struct si_shader_selector {

	struct si_shader *current;

	struct tgsi_token       *tokens;

	struct pipe_stream_output_info  so;

	struct tgsi_shader_info		info;

	unsigned	num_shaders;

	/* PIPE_SHADER_[VERTEX|FRAGMENT|...] */

	unsigned	type;

	unsigned	gs_output_prim;

	unsigned	gs_max_out_vertices;

	uint64_t	gs_used_inputs; /* mask of "get_unique_index" bits */

};

union si_shader_key {

	struct {

		unsigned	export_16bpc:8;

		unsigned	last_cbuf:3;

		unsigned	color_two_side:1;

		unsigned	alpha_func:3;

		unsigned	alpha_to_one:1;

		unsigned	poly_stipple:1;

		unsigned	poly_line_smoothing:1;

	} ps;

	struct {

		unsigned	instance_divisors[SI_NUM_VERTEX_BUFFERS];

		/* The mask of "get_unique_index" bits, needed for ES,

		 * it describes how the ES->GS ring buffer is laid out. */

		uint64_t	gs_used_inputs;

		unsigned	as_es:1;

	} vs;

};

struct si_shader {

	struct si_shader_selector	*selector;

	struct si_shader		*next_variant;

	struct si_shader		*gs_copy_shader;

	struct si_pm4_state		*pm4;

	struct r600_resource		*bo;

	struct r600_resource		*scratch_bo;

	struct radeon_shader_binary	binary;

	unsigned			num_sgprs;

	unsigned			num_vgprs;

	unsigned			lds_size;

	unsigned			spi_ps_input_ena;

	unsigned			float_mode;

	unsigned			scratch_bytes_per_wave;

	unsigned			spi_shader_col_format;

	unsigned			spi_shader_z_format;

	unsigned			db_shader_control;

	unsigned			cb_shader_mask;

	union si_shader_key		key;

	unsigned		nparam;

	unsigned		vs_output_param_offset[PIPE_MAX_SHADER_OUTPUTS];

	unsigned		ps_input_param_offset[PIPE_MAX_SHADER_INPUTS];

	bool			uses_instanceid;

	unsigned		nr_pos_exports;

	bool			is_gs_copy_shader;

	bool			dx10_clamp_mode; /* convert NaNs to 0 */

};

static inline struct tgsi_shader_info *si_get_vs_info(struct si_context *sctx)

{

	return sctx->gs_shader ? &sctx->gs_shader->info

                               : &sctx->vs_shader->info;

}

static inline struct si_shader* si_get_vs_state(struct si_context *sctx)

{

	if (sctx->gs_shader)

		return sctx->gs_shader->current->gs_copy_shader;

	else

		return sctx->vs_shader->current;

}

/* radeonsi_shader.c */

int si_shader_create(struct si_screen *sscreen, LLVMTargetMachineRef tm,

		     struct si_shader *shader);

int si_compile_llvm(struct si_screen *sscreen, struct si_shader *shader,

		    LLVMTargetMachineRef tm, LLVMModuleRef mod);

void si_shader_destroy(struct pipe_context *ctx, struct si_shader *shader);

unsigned si_shader_io_get_unique_index(unsigned semantic_name, unsigned index);

int si_shader_binary_read(struct si_screen *sscreen, struct si_shader *shader,

		const struct radeon_shader_binary *binary);

void si_shader_apply_scratch_relocs(struct si_context *sctx,

			struct si_shader *shader,

			uint64_t scratch_va);

void si_shader_binary_read_config(const struct si_screen *sscreen,

				struct si_shader *shader,

				unsigned symbol_offset);

#endif