/*
 * 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:
 *      Christian König <christian.koenig@amd.com>
 */

#ifndef SI_STATE_H
#define SI_STATE_H

#include "radeonsi_pm4.h"

struct si_state_blend {
	struct si_pm4_state	pm4;
	uint32_t		cb_target_mask;
	uint32_t		cb_color_control;
};

struct si_state_viewport {
	struct si_pm4_state		pm4;
	struct pipe_viewport_state	viewport;
};

struct si_state_rasterizer {
	struct si_pm4_state	pm4;
	bool			flatshade;
	unsigned		sprite_coord_enable;
	unsigned		pa_sc_line_stipple;
	unsigned		pa_su_sc_mode_cntl;
	unsigned		pa_cl_clip_cntl;
	unsigned		pa_cl_vs_out_cntl;
	float			offset_units;
	float			offset_scale;
};

struct si_state_dsa {
	struct si_pm4_state	pm4;
	unsigned		alpha_ref;
	unsigned		db_render_override;
	unsigned		db_render_control;
	uint8_t			valuemask[2];
	uint8_t			writemask[2];
};

struct si_vertex_element
{
        unsigned                        count;
        struct pipe_vertex_element      elements[PIPE_MAX_ATTRIBS];
};

struct si_shader_io {
	unsigned		name;
	unsigned		gpr;
	unsigned		done;
	int			sid;
	unsigned		param_offset;
	unsigned		interpolate;
	bool			centroid;
};

struct si_shader {
	unsigned		ninput;
	unsigned		noutput;
	struct si_shader_io	input[32];
	struct si_shader_io	output[32];
	bool			uses_kill;
	bool			fs_write_all;
	unsigned		nr_cbufs;
};

struct si_pipe_shader {
	struct si_shader		shader;
	struct si_pm4_state		*pm4;
	struct r600_resource		*bo;
	struct si_vertex_element	vertex_elements;
	struct tgsi_token		*tokens;
	unsigned			num_sgprs;
	unsigned			num_vgprs;
	unsigned			spi_ps_input_ena;
	unsigned			sprite_coord_enable;
	struct pipe_stream_output_info	so;
	unsigned			so_strides[4];
};

union si_state {
	struct {
		struct si_pm4_state		*init;
		struct si_state_blend		*blend;
		struct si_pm4_state		*blend_color;
		struct si_pm4_state		*clip;
		struct si_pm4_state		*scissor;
		struct si_state_viewport	*viewport;
		struct si_pm4_state		*framebuffer;
		struct si_state_rasterizer	*rasterizer;
		struct si_state_dsa		*dsa;
		struct si_pm4_state		*fb_rs;
		struct si_pm4_state		*fb_blend;
		struct si_pm4_state		*dsa_stencil_ref;
		struct si_pm4_state		*vs;
		struct si_pm4_state		*vs_const;
		struct si_pm4_state		*ps;
		struct si_pm4_state		*ps_sampler_views;
		struct si_pm4_state		*ps_sampler;
		struct si_pm4_state		*ps_const;
		struct si_pm4_state		*spi;
		struct si_pm4_state		*vertex_buffers;
		struct si_pm4_state		*texture_barrier;
		struct si_pm4_state		*draw_info;
	} named;
	struct si_pm4_state	*array[0];
};

#define si_pm4_block_idx(member) \
	(offsetof(union si_state, named.member) / sizeof(struct si_pm4_state *))

#define si_pm4_bind_state(rctx, member, value) \
	do { \
		(rctx)->queued.named.member = (value); \
	} while(0);

#define si_pm4_delete_state(rctx, member, value) \
	do { \
		if ((rctx)->queued.named.member == (value)) { \
			(rctx)->queued.named.member = NULL; \
		} \
		si_pm4_free_state(rctx, (struct si_pm4_state *)(value), \
				  si_pm4_block_idx(member)); \
	} while(0);

#define si_pm4_set_state(rctx, member, value) \
	do { \
		if ((rctx)->queued.named.member != (value)) { \
			si_pm4_free_state(rctx, \
				(struct si_pm4_state *)(rctx)->queued.named.member, \
				si_pm4_block_idx(member)); \
			(rctx)->queued.named.member = (value); \
		} \
	} while(0);

/* si_state.c */
uint32_t si_translate_vertexformat(struct pipe_screen *screen,
				   enum pipe_format format,
				   const struct util_format_description *desc,
				   int first_non_void);
bool si_is_format_supported(struct pipe_screen *screen,
			    enum pipe_format format,
			    enum pipe_texture_target target,
			    unsigned sample_count,
			    unsigned usage);
void si_init_state_functions(struct r600_context *rctx);
void si_init_config(struct r600_context *rctx);

/* si_state_draw.c */
void si_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *dinfo);

#endif