src/mesa/drivers/dri/i965/brw_shader.h

   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
  31 enum 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
  43 class backend_instruction : public exec_node {
  44 public:
  45    bool is_tex() const;
  46    bool is_math() const;
  47    bool is_control_flow() const;
  48    bool can_do_source_mods() const;
  49    bool can_do_saturate() const;
  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
  64 enum instruction_scheduler_mode {
  65    SCHEDULE_PRE,
  66    SCHEDULE_PRE_NON_LIFO,
  67    SCHEDULE_PRE_LIFO,
  68    SCHEDULE_POST,
  69 };
  70
  71 class backend_visitor : public ir_visitor {
  72 protected:
  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                    gl_shader_stage stage);
  79
  80 public:
  81
  82    struct brw_context * const brw;
  83    struct gl_context * const ctx;
  84    struct brw_shader * const shader;
  85    struct gl_shader_program * const shader_prog;
  86    struct gl_program * const prog;
  87    struct brw_stage_prog_data * const stage_prog_data;
  88
  89    /** ralloc context for temporary data used during compile */
  90    void *mem_ctx;
  91
  92    /**
  93     * List of either fs_inst or vec4_instruction (inheriting from
  94     * backend_instruction)
  95     */
  96    exec_list instructions;
  97
  98    virtual void dump_instruction(backend_instruction *inst) = 0;
  99    virtual void dump_instructions();
 100
 101    void assign_common_binding_table_offsets(uint32_t next_binding_table_offset);
 102
 103    virtual void invalidate_live_intervals() = 0;
 104 };
 105
 106 uint32_t brw_texture_offset(struct gl_context *ctx, ir_constant *offset);
 107
 108 #endif /* __cplusplus */
 109
 110 int brw_type_for_base_type(const struct glsl_type *type);
 111 uint32_t brw_conditional_for_comparison(unsigned int op);
 112 uint32_t brw_math_function(enum opcode op);
 113 const char *brw_instruction_name(enum opcode op);