src/intel/compiler/brw_nir.h

   1 /*
   2  * Copyright © 2015 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_NIR_H
  25 #define BRW_NIR_H
  26
  27 #include "brw_reg.h"
  28 #include "compiler/nir/nir.h"
  29 #include "brw_compiler.h"
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 int type_size_scalar(const struct glsl_type *type, bool bindless);
  36 int type_size_vec4(const struct glsl_type *type, bool bindless);
  37 int type_size_dvec4(const struct glsl_type *type, bool bindless);
  38
  39 static inline int
  40 type_size_scalar_bytes(const struct glsl_type *type, bool bindless)
  41 {
  42    return type_size_scalar(type, bindless) * 4;
  43 }
  44
  45 static inline int
  46 type_size_vec4_bytes(const struct glsl_type *type, bool bindless)
  47 {
  48    return type_size_vec4(type, bindless) * 16;
  49 }
  50
  51 /* Flags set in the instr->pass_flags field by i965 analysis passes */
  52 enum {
  53    BRW_NIR_NON_BOOLEAN           = 0x0,
  54
  55    /* Indicates that the given instruction's destination is a boolean
  56     * value but that it needs to be resolved before it can be used.
  57     * On Gen <= 5, CMP instructions return a 32-bit value where the bottom
  58     * bit represents the actual true/false value of the compare and the top
  59     * 31 bits are undefined.  In order to use this value, we have to do a
  60     * "resolve" operation by replacing the value of the CMP with -(x & 1)
  61     * to sign-extend the bottom bit to 0/~0.
  62     */
  63    BRW_NIR_BOOLEAN_NEEDS_RESOLVE = 0x1,
  64
  65    /* Indicates that the given instruction's destination is a boolean
  66     * value that has intentionally been left unresolved.  Not all boolean
  67     * values need to be resolved immediately.  For instance, if we have
  68     *
  69     *    CMP r1 r2 r3
  70     *    CMP r4 r5 r6
  71     *    AND r7 r1 r4
  72     *
  73     * We don't have to resolve the result of the two CMP instructions
  74     * immediately because the AND still does an AND of the bottom bits.
  75     * Instead, we can save ourselves instructions by delaying the resolve
  76     * until after the AND.  The result of the two CMP instructions is left
  77     * as BRW_NIR_BOOLEAN_UNRESOLVED.
  78     */
  79    BRW_NIR_BOOLEAN_UNRESOLVED    = 0x2,
  80
  81    /* Indicates a that the given instruction's destination is a boolean
  82     * value that does not need a resolve.  For instance, if you AND two
  83     * values that are BRW_NIR_BOOLEAN_NEEDS_RESOLVE then we know that both
  84     * values will be 0/~0 before we get them and the result of the AND is
  85     * also guaranteed to be 0/~0 and does not need a resolve.
  86     */
  87    BRW_NIR_BOOLEAN_NO_RESOLVE    = 0x3,
  88
  89    /* A mask to mask the boolean status values off of instr->pass_flags */
  90    BRW_NIR_BOOLEAN_MASK          = 0x3,
  91 };
  92
  93 void brw_nir_analyze_boolean_resolves(nir_shader *nir);
  94
  95 nir_shader *brw_preprocess_nir(const struct brw_compiler *compiler,
  96                                nir_shader *nir,
  97                                const nir_shader *softfp64);
  98
  99 void
 100 brw_nir_link_shaders(const struct brw_compiler *compiler,
 101                      nir_shader **producer, nir_shader **consumer);
 102
 103 bool brw_nir_lower_cs_intrinsics(nir_shader *nir,
 104                                  unsigned dispatch_width);
 105 void brw_nir_lower_vs_inputs(nir_shader *nir,
 106                              const uint8_t *vs_attrib_wa_flags);
 107 void brw_nir_lower_vue_inputs(nir_shader *nir,
 108                               const struct brw_vue_map *vue_map);
 109 void brw_nir_lower_tes_inputs(nir_shader *nir, const struct brw_vue_map *vue);
 110 void brw_nir_lower_fs_inputs(nir_shader *nir,
 111                              const struct gen_device_info *devinfo,
 112                              const struct brw_wm_prog_key *key);
 113 void brw_nir_lower_vue_outputs(nir_shader *nir);
 114 void brw_nir_lower_tcs_outputs(nir_shader *nir, const struct brw_vue_map *vue,
 115                                GLenum tes_primitive_mode);
 116 void brw_nir_lower_fs_outputs(nir_shader *nir);
 117
 118 bool brw_nir_lower_conversions(nir_shader *nir);
 119
 120 bool brw_nir_lower_image_load_store(nir_shader *nir,
 121                                     const struct gen_device_info *devinfo);
 122 void brw_nir_rewrite_image_intrinsic(nir_intrinsic_instr *intrin,
 123                                      nir_ssa_def *index);
 124
 125 bool brw_nir_lower_mem_access_bit_sizes(nir_shader *shader);
 126
 127 nir_shader *brw_postprocess_nir(nir_shader *nir,
 128                                 const struct brw_compiler *compiler,
 129                                 bool is_scalar);
 130
 131 bool brw_nir_apply_attribute_workarounds(nir_shader *nir,
 132                                          const uint8_t *attrib_wa_flags);
 133
 134 bool brw_nir_apply_trig_workarounds(nir_shader *nir);
 135
 136 void brw_nir_apply_tcs_quads_workaround(nir_shader *nir);
 137
 138 nir_shader *brw_nir_apply_sampler_key(nir_shader *nir,
 139                                       const struct brw_compiler *compiler,
 140                                       const struct brw_sampler_prog_key_data *key,
 141                                       bool is_scalar);
 142
 143 enum brw_reg_type brw_type_for_nir_type(const struct gen_device_info *devinfo,
 144                                         nir_alu_type type);
 145
 146 enum glsl_base_type brw_glsl_base_type_for_nir_type(nir_alu_type type);
 147
 148 void brw_nir_setup_glsl_uniforms(void *mem_ctx, nir_shader *shader,
 149                                  const struct gl_program *prog,
 150                                  struct brw_stage_prog_data *stage_prog_data,
 151                                  bool is_scalar);
 152
 153 void brw_nir_setup_arb_uniforms(void *mem_ctx, nir_shader *shader,
 154                                 struct gl_program *prog,
 155                                 struct brw_stage_prog_data *stage_prog_data);
 156
 157 void brw_nir_lower_gl_images(nir_shader *shader,
 158                              const struct gl_program *prog);
 159
 160 void brw_nir_analyze_ubo_ranges(const struct brw_compiler *compiler,
 161                                 nir_shader *nir,
 162                                 const struct brw_vs_prog_key *vs_key,
 163                                 struct brw_ubo_range out_ranges[4]);
 164
 165 bool brw_nir_opt_peephole_ffma(nir_shader *shader);
 166
 167 nir_shader *brw_nir_optimize(nir_shader *nir,
 168                              const struct brw_compiler *compiler,
 169                              bool is_scalar,
 170                              bool allow_copies);
 171
 172 nir_shader *brw_nir_create_passthrough_tcs(void *mem_ctx,
 173                                            const struct brw_compiler *compiler,
 174                                            const nir_shader_compiler_options *options,
 175                                            const struct brw_tcs_prog_key *key);
 176
 177 #define BRW_NIR_FRAG_OUTPUT_INDEX_SHIFT 0
 178 #define BRW_NIR_FRAG_OUTPUT_INDEX_MASK INTEL_MASK(0, 0)
 179 #define BRW_NIR_FRAG_OUTPUT_LOCATION_SHIFT 1
 180 #define BRW_NIR_FRAG_OUTPUT_LOCATION_MASK INTEL_MASK(31, 1)
 181
 182 #ifdef __cplusplus
 183 }
 184 #endif
 185
 186 #endif /* BRW_NIR_H */