brw_shader.h revision 81494ec6137d133f999a98474d1660b8c87d2276 
1/*
2 * Copyright © 2010 Intel Corporation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24#include <stdint.h>
25#include "brw_defines.h"
26#include "main/compiler.h"
27#include "glsl/ir.h"
28
29#pragma once
30
31enum PACKED register_file {
32   BAD_FILE,
33   GRF,
34   MRF,
35   IMM,
36   HW_REG, /* a struct brw_reg */
37   ATTR,
38   UNIFORM, /* prog_data->params[reg] */
39};
40
41#ifdef __cplusplus
42
43class backend_instruction : public exec_node {
44public:
45   bool is_tex();
46   bool is_math();
47   bool is_control_flow();
48   bool can_do_source_mods();
49   bool can_do_saturate();
50
51   /**
52    * True if the instruction has side effects other than writing to
53    * its destination registers.  You are expected not to reorder or
54    * optimize these out unless you know what you are doing.
55    */
56   bool has_side_effects() const;
57
58   enum opcode opcode; /* BRW_OPCODE_* or FS_OPCODE_* */
59
60   uint8_t predicate;
61   bool predicate_inverse;
62};
63
64enum instruction_scheduler_mode {
65   SCHEDULE_PRE,
66   SCHEDULE_PRE_NON_LIFO,
67   SCHEDULE_PRE_LIFO,
68   SCHEDULE_POST,
69};
70
71class backend_visitor : public ir_visitor {
72protected:
73
74   backend_visitor(struct brw_context *brw,
75                   struct gl_shader_program *shader_prog,
76                   struct gl_program *prog,
77                   struct brw_stage_prog_data *stage_prog_data);
78
79public:
80
81   struct brw_context *brw;
82   struct gl_context *ctx;
83   struct brw_shader *shader;
84   struct gl_shader_program *shader_prog;
85   struct gl_program *prog;
86   struct brw_stage_prog_data *stage_prog_data;
87
88   /** ralloc context for temporary data used during compile */
89   void *mem_ctx;
90
91   /**
92    * List of either fs_inst or vec4_instruction (inheriting from
93    * backend_instruction)
94    */
95   exec_list instructions;
96
97   virtual void dump_instruction(backend_instruction *inst) = 0;
98   virtual void dump_instructions();
99
100   void assign_common_binding_table_offsets(uint32_t next_binding_table_offset);
101
102   virtual void invalidate_live_intervals() = 0;
103};
104
105uint32_t brw_texture_offset(struct gl_context *ctx, ir_constant *offset);
106
107#endif /* __cplusplus */
108
109int brw_type_for_base_type(const struct glsl_type *type);
110uint32_t brw_conditional_for_comparison(unsigned int op);
111uint32_t brw_math_function(enum opcode op);
112const char *brw_instruction_name(enum opcode op);
113