1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
4 * Copyright (C) 2014 Rob Clark <robclark@freedesktop.org>
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 * Rob Clark <robclark@freedesktop.org>
35 typedef uint16_t ir3_semantic
; /* semantic name + index */
36 static inline ir3_semantic
37 ir3_semantic_name(uint8_t name
, uint16_t index
)
39 return (name
<< 8) | (index
& 0xff);
42 static inline uint8_t sem2name(ir3_semantic sem
)
47 static inline uint16_t sem2idx(ir3_semantic sem
)
52 /* Configuration key used to identify a shader variant.. different
53 * shader variants can be used to implement features not supported
54 * in hw (two sided color), binning-pass vertex shader, etc.
56 struct ir3_shader_key
{
57 /* vertex shader variant parameters: */
58 unsigned binning_pass
: 1;
60 /* fragment shader variant parameters: */
61 unsigned color_two_side
: 1;
62 unsigned half_precision
: 1;
65 struct ir3_shader_variant
{
68 struct ir3_shader_key key
;
73 /* the instructions length is in units of instruction groups
74 * (4 instructions, 8 dwords):
78 /* the constants length is in units of vec4's, and is the sum of
79 * the uniforms and the built-in compiler constants
84 * + Let the frag shader determine the position/compmask for the
85 * varyings, since it is the place where we know if the varying
86 * is actually used, and if so, which components are used. So
87 * what the hw calls "outloc" is taken from the "inloc" of the
89 * + From the vert shader, we only need the output regid
92 /* for frag shader, pos_regid holds the frag_pos, ie. what is passed
93 * to bary.f instructions
96 bool frag_coord
, frag_face
;
98 /* varyings/outputs: */
99 unsigned outputs_count
;
101 ir3_semantic semantic
;
103 } outputs
[16 + 2]; /* +POSITION +PSIZE */
104 bool writes_pos
, writes_psize
;
106 /* vertices/inputs: */
107 unsigned inputs_count
;
109 ir3_semantic semantic
;
113 /* in theory inloc of fs should match outloc of vs: */
116 } inputs
[16 + 2]; /* +POSITION +FACE */
118 unsigned total_in
; /* sum of inputs (scalar) */
120 /* do we have one or more texture sample instructions: */
123 /* const reg # of first immediate, ie. 1 == c1
124 * (not regid, because TGSI thinks in terms of vec4 registers,
125 * not scalar registers)
127 unsigned first_immediate
;
128 unsigned immediates_count
;
133 /* shader variants form a linked list: */
134 struct ir3_shader_variant
*next
;
136 /* replicated here to avoid passing extra ptrs everywhere: */
138 struct ir3_shader
*shader
;
144 struct pipe_context
*pctx
;
145 const struct tgsi_token
*tokens
;
147 struct ir3_shader_variant
*variants
;
149 /* so far, only used for blit_prog shader.. values for
150 * VPC_VARYING_INTERP[i].MODE and VPC_VARYING_PS_REPL[i].MODE
152 uint32_t vinterp
[4], vpsrepl
[4];
156 struct ir3_shader
* ir3_shader_create(struct pipe_context
*pctx
,
157 const struct tgsi_token
*tokens
, enum shader_t type
);
158 void ir3_shader_destroy(struct ir3_shader
*shader
);
160 struct ir3_shader_variant
* ir3_shader_variant(struct ir3_shader
*shader
,
161 struct ir3_shader_key key
);
163 #endif /* IR3_SHADER_H_ */