1/*
2 * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23#ifndef R600_SHADER_H
24#define R600_SHADER_H
25
26#include "r600_asm.h"
27
28
29#ifdef __cplusplus
30extern "C" {
31#endif
32
33/* Valid shader configurations:
34 *
35 * API shaders       VS | TCS | TES | GS |pass| PS
36 * are compiled as:     |     |     |    |thru|
37 *                      |     |     |    |    |
38 * Only VS & PS:     VS | --  | --  | -- | -- | PS
39 * With GS:          ES | --  | --  | GS | VS | PS
40 * With Tessel.:     LS | HS  | VS  | -- | -- | PS
41 * With both:        LS | HS  | ES  | GS | VS | PS
42 */
43
44struct r600_shader_io {
45	unsigned		name;
46	unsigned		gpr;
47	unsigned		done;
48	unsigned		sid;
49	int			spi_sid;
50	unsigned		interpolate;
51	unsigned		ij_index;
52	unsigned		interpolate_location; //  TGSI_INTERPOLATE_LOC_CENTER, CENTROID, SAMPLE
53	unsigned		lds_pos; /* for evergreen */
54	unsigned		back_color_input;
55	unsigned		write_mask;
56	int			ring_offset;
57	unsigned		uses_interpolate_at_centroid;
58};
59
60struct r600_shader_atomic {
61	unsigned start, end;
62	unsigned buffer_id;
63	unsigned hw_idx;
64	unsigned array_id;
65};
66
67struct r600_shader {
68	unsigned		processor_type;
69	struct r600_bytecode		bc;
70	unsigned		ninput;
71	unsigned		noutput;
72	unsigned                nhwatomic;
73	unsigned		nlds;
74	unsigned		nsys_inputs;
75	struct r600_shader_io	input[PIPE_MAX_SHADER_INPUTS];
76	struct r600_shader_io	output[PIPE_MAX_SHADER_OUTPUTS];
77	struct r600_shader_atomic atomics[8];
78	unsigned                nhwatomic_ranges;
79	boolean			uses_kill;
80	boolean			fs_write_all;
81	boolean			two_side;
82	boolean			needs_scratch_space;
83	/* Number of color outputs in the TGSI shader,
84	 * sometimes it could be higher than nr_cbufs (bug?).
85	 * Also with writes_all property on eg+ it will be set to max CB number */
86	unsigned		nr_ps_max_color_exports;
87	/* Real number of ps color exports compiled in the bytecode */
88	unsigned		nr_ps_color_exports;
89	unsigned                ps_color_export_mask;
90	unsigned                ps_export_highest;
91	/* bit n is set if the shader writes gl_ClipDistance[n] */
92	unsigned		cc_dist_mask;
93	unsigned		clip_dist_write;
94	unsigned                cull_dist_write;
95	boolean			vs_position_window_space;
96	/* flag is set if the shader writes VS_OUT_MISC_VEC (e.g. for PSIZE) */
97	boolean			vs_out_misc_write;
98	boolean			vs_out_point_size;
99	boolean			vs_out_layer;
100	boolean			vs_out_viewport;
101	boolean			vs_out_edgeflag;
102	boolean			has_txq_cube_array_z_comp;
103	boolean			uses_tex_buffers;
104	boolean                 gs_prim_id_input;
105	boolean                 gs_tri_strip_adj_fix;
106	uint8_t			ps_conservative_z;
107
108	/* Size in bytes of a data item in the ring(s) (single vertex data).
109	   Stages with only one ring items 123 will be set to 0. */
110	unsigned		ring_item_sizes[4];
111
112	unsigned		indirect_files;
113	unsigned		max_arrays;
114	unsigned		num_arrays;
115	unsigned		vs_as_es;
116	unsigned		vs_as_ls;
117	unsigned		vs_as_gs_a;
118	unsigned                tes_as_es;
119	unsigned                tcs_prim_mode;
120	unsigned                ps_prim_id_input;
121	struct r600_shader_array * arrays;
122
123	boolean			uses_doubles;
124	boolean                 uses_atomics;
125	boolean			uses_images;
126	boolean			uses_helper_invocation;
127	uint8_t                 atomic_base;
128	uint8_t			rat_base;
129	uint8_t                 image_size_const_offset;
130};
131
132union r600_shader_key {
133	struct {
134		unsigned	nr_cbufs:4;
135		unsigned        first_atomic_counter:4;
136		unsigned        image_size_const_offset:5;
137		unsigned	color_two_side:1;
138		unsigned	alpha_to_one:1;
139		unsigned        apply_sample_id_mask:1;
140		unsigned        dual_source_blend:1;
141	} ps;
142	struct {
143		unsigned	prim_id_out:8;
144		unsigned        first_atomic_counter:4;
145		unsigned	as_es:1; /* export shader */
146		unsigned	as_ls:1; /* local shader */
147		unsigned	as_gs_a:1;
148	} vs;
149	struct {
150		unsigned        first_atomic_counter:4;
151		unsigned	as_es:1;
152	} tes;
153	struct {
154		unsigned        first_atomic_counter:4;
155		unsigned	prim_mode:3;
156	} tcs;
157	struct {
158		unsigned        first_atomic_counter:4;
159		unsigned        tri_strip_adj_fix:1;
160	} gs;
161};
162
163struct r600_shader_array {
164	unsigned gpr_start;
165	unsigned gpr_count;
166	unsigned comp_mask;
167};
168
169struct r600_pipe_shader {
170	struct r600_pipe_shader_selector *selector;
171	struct r600_pipe_shader	*next_variant;
172	/* for GS - corresponding copy shader (installed as VS) */
173	struct r600_pipe_shader *gs_copy_shader;
174	struct r600_shader	shader;
175	struct r600_command_buffer command_buffer; /* register writes */
176	struct r600_resource	*bo;
177	unsigned		sprite_coord_enable;
178	unsigned		flatshade;
179	unsigned		pa_cl_vs_out_cntl;
180	unsigned		nr_ps_color_outputs;
181	unsigned                ps_color_export_mask;
182
183	union r600_shader_key	key;
184	unsigned		db_shader_control;
185	unsigned		ps_depth_export;
186	unsigned		enabled_stream_buffers_mask;
187	unsigned		scratch_space_needed; /* size of scratch space (if > 0) counted in vec4 */
188};
189
190/* return the table index 0-5 for TGSI_INTERPOLATE_LINEAR/PERSPECTIVE and
191 TGSI_INTERPOLATE_LOC_CENTER/SAMPLE/COUNT. Other input values return -1. */
192int eg_get_interpolator_index(unsigned interpolate, unsigned location);
193
194int r600_get_lds_unique_index(unsigned semantic_name, unsigned index);
195
196int generate_gs_copy_shader(struct r600_context *rctx,
197                            struct r600_pipe_shader *gs,
198                            struct pipe_stream_output_info *so);
199
200#ifdef __cplusplus
201}  // extern "C"
202#endif
203
204
205#endif
206