2 * Copyright © 2015 Intel Corporation
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5 * copy of this software and associated documentation files (the "Software"),
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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:
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
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
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20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
26 #include "brw_context.h"
28 #include "compiler/nir/nir.h"
34 /* Flags set in the instr->pass_flags field by i965 analysis passes */
36 BRW_NIR_NON_BOOLEAN
= 0x0,
38 /* Indicates that the given instruction's destination is a boolean
39 * value but that it needs to be resolved before it can be used.
40 * On Gen <= 5, CMP instructions return a 32-bit value where the bottom
41 * bit represents the actual true/false value of the compare and the top
42 * 31 bits are undefined. In order to use this value, we have to do a
43 * "resolve" operation by replacing the value of the CMP with -(x & 1)
44 * to sign-extend the bottom bit to 0/~0.
46 BRW_NIR_BOOLEAN_NEEDS_RESOLVE
= 0x1,
48 /* Indicates that the given instruction's destination is a boolean
49 * value that has intentionally been left unresolved. Not all boolean
50 * values need to be resolved immediately. For instance, if we have
56 * We don't have to resolve the result of the two CMP instructions
57 * immediately because the AND still does an AND of the bottom bits.
58 * Instead, we can save ourselves instructions by delaying the resolve
59 * until after the AND. The result of the two CMP instructions is left
60 * as BRW_NIR_BOOLEAN_UNRESOLVED.
62 BRW_NIR_BOOLEAN_UNRESOLVED
= 0x2,
64 /* Indicates a that the given instruction's destination is a boolean
65 * value that does not need a resolve. For instance, if you AND two
66 * values that are BRW_NIR_BOOLEAN_NEEDS_RESOLVE then we know that both
67 * values will be 0/~0 before we get them and the result of the AND is
68 * also guaranteed to be 0/~0 and does not need a resolve.
70 BRW_NIR_BOOLEAN_NO_RESOLVE
= 0x3,
72 /* A mask to mask the boolean status values off of instr->pass_flags */
73 BRW_NIR_BOOLEAN_MASK
= 0x3,
76 void brw_nir_analyze_boolean_resolves(nir_shader
*nir
);
78 nir_shader
*brw_create_nir(struct brw_context
*brw
,
79 const struct gl_shader_program
*shader_prog
,
80 const struct gl_program
*prog
,
81 gl_shader_stage stage
,
84 nir_shader
*brw_preprocess_nir(nir_shader
*nir
, bool is_scalar
);
86 void brw_nir_lower_vs_inputs(nir_shader
*nir
,
87 const struct brw_device_info
*devinfo
,
89 bool use_legacy_snorm_formula
,
90 const uint8_t *vs_attrib_wa_flags
);
91 void brw_nir_lower_vue_inputs(nir_shader
*nir
, bool is_scalar
,
92 const struct brw_vue_map
*vue_map
);
93 void brw_nir_lower_tes_inputs(nir_shader
*nir
, const struct brw_vue_map
*vue
);
94 void brw_nir_lower_fs_inputs(nir_shader
*nir
);
95 void brw_nir_lower_vue_outputs(nir_shader
*nir
, bool is_scalar
);
96 void brw_nir_lower_tcs_outputs(nir_shader
*nir
, const struct brw_vue_map
*vue
);
97 void brw_nir_lower_fs_outputs(nir_shader
*nir
);
98 void brw_nir_lower_cs_shared(nir_shader
*nir
);
100 nir_shader
*brw_postprocess_nir(nir_shader
*nir
,
101 const struct brw_device_info
*devinfo
,
104 bool brw_nir_apply_attribute_workarounds(nir_shader
*nir
,
105 bool use_legacy_snorm_formula
,
106 const uint8_t *attrib_wa_flags
);
108 nir_shader
*brw_nir_apply_sampler_key(nir_shader
*nir
,
109 const struct brw_device_info
*devinfo
,
110 const struct brw_sampler_prog_key_data
*key
,
113 enum brw_reg_type
brw_type_for_nir_type(nir_alu_type type
);
115 enum glsl_base_type
brw_glsl_base_type_for_nir_type(nir_alu_type type
);
117 void brw_nir_setup_glsl_uniforms(nir_shader
*shader
,
118 struct gl_shader_program
*shader_prog
,
119 const struct gl_program
*prog
,
120 struct brw_stage_prog_data
*stage_prog_data
,
123 void brw_nir_setup_arb_uniforms(nir_shader
*shader
, struct gl_program
*prog
,
124 struct brw_stage_prog_data
*stage_prog_data
);
126 bool brw_nir_opt_peephole_ffma(nir_shader
*shader
);