src/intel/compiler/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 #ifndef BRW_SHADER_H
  25 #define BRW_SHADER_H
  26
  27 #include <stdint.h>
  28 #include "brw_cfg.h"
  29 #include "brw_compiler.h"
  30 #include "compiler/nir/nir.h"
  31
  32 #ifdef __cplusplus
  33 #include "brw_ir_analysis.h"
  34 #include "brw_ir_allocator.h"
  35
  36 enum instruction_scheduler_mode {
  37    SCHEDULE_PRE,
  38    SCHEDULE_PRE_NON_LIFO,
  39    SCHEDULE_PRE_LIFO,
  40    SCHEDULE_POST,
  41 };
  42
  43 struct backend_shader {
  44 protected:
  45
  46    backend_shader(const struct brw_compiler *compiler,
  47                   void *log_data,
  48                   void *mem_ctx,
  49                   const nir_shader *shader,
  50                   struct brw_stage_prog_data *stage_prog_data);
  51
  52 public:
  53    virtual ~backend_shader();
  54
  55    const struct brw_compiler *compiler;
  56    void *log_data; /* Passed to compiler->*_log functions */
  57
  58    const struct gen_device_info * const devinfo;
  59    const nir_shader *nir;
  60    struct brw_stage_prog_data * const stage_prog_data;
  61
  62    /** ralloc context for temporary data used during compile */
  63    void *mem_ctx;
  64
  65    /**
  66     * List of either fs_inst or vec4_instruction (inheriting from
  67     * backend_instruction)
  68     */
  69    exec_list instructions;
  70
  71    cfg_t *cfg;
  72    BRW_ANALYSIS(idom_analysis, brw::idom_tree,
  73                 const backend_shader *) idom_analysis;
  74
  75    gl_shader_stage stage;
  76    bool debug_enabled;
  77    const char *stage_name;
  78    const char *stage_abbrev;
  79
  80    brw::simple_allocator alloc;
  81
  82    virtual void dump_instruction(const backend_instruction *inst) const = 0;
  83    virtual void dump_instruction(const backend_instruction *inst, FILE *file) const = 0;
  84    virtual void dump_instructions() const;
  85    virtual void dump_instructions(const char *name) const;
  86
  87    void calculate_cfg();
  88
  89    virtual void invalidate_analysis(brw::analysis_dependency_class c);
  90 };
  91
  92 #else
  93 struct backend_shader;
  94 #endif /* __cplusplus */
  95
  96 enum brw_reg_type brw_type_for_base_type(const struct glsl_type *type);
  97 enum brw_conditional_mod brw_conditional_for_comparison(unsigned int op);
  98 uint32_t brw_math_function(enum opcode op);
  99 const char *brw_instruction_name(const struct gen_device_info *devinfo,
 100                                  enum opcode op);
 101 bool brw_saturate_immediate(enum brw_reg_type type, struct brw_reg *reg);
 102 bool brw_negate_immediate(enum brw_reg_type type, struct brw_reg *reg);
 103 bool brw_abs_immediate(enum brw_reg_type type, struct brw_reg *reg);
 104
 105 bool opt_predicated_break(struct backend_shader *s);
 106
 107 #ifdef __cplusplus
 108 extern "C" {
 109 #endif
 110
 111 /* brw_fs_reg_allocate.cpp */
 112 void brw_fs_alloc_reg_sets(struct brw_compiler *compiler);
 113
 114 /* brw_vec4_reg_allocate.cpp */
 115 void brw_vec4_alloc_reg_set(struct brw_compiler *compiler);
 116
 117 /* brw_disasm.c */
 118 extern const char *const conditional_modifier[16];
 119 extern const char *const pred_ctrl_align16[16];
 120
 121 /* Per-thread scratch space is a power-of-two multiple of 1KB. */
 122 static inline int
 123 brw_get_scratch_size(int size)
 124 {
 125    return MAX2(1024, util_next_power_of_two(size));
 126 }
 127
 128 bool brw_texture_offset(const nir_tex_instr *tex, unsigned src,
 129                         uint32_t *offset_bits);
 130
 131 /**
 132  * Scratch data used when compiling a GLSL geometry shader.
 133  */
 134 struct brw_gs_compile
 135 {
 136    struct brw_gs_prog_key key;
 137    struct brw_vue_map input_vue_map;
 138
 139    unsigned control_data_bits_per_vertex;
 140    unsigned control_data_header_size_bits;
 141 };
 142
 143 #ifdef __cplusplus
 144 }
 145 #endif
 146
 147 #endif /* BRW_SHADER_H */