src/gallium/drivers/panfrost/midgard/midgard_compile.h

   1 /*
   2  * Copyright (C) 2018-2019 Alyssa Rosenzweig <alyssa@rosenzweig.io>
   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 FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  */
  23
  24 #ifndef __MIDGARD_H_
  25 #define __MIDGARD_H_
  26
  27 #include "compiler/nir/nir.h"
  28 #include "util/u_dynarray.h"
  29
  30 /* Define the general compiler entry point */
  31
  32 #define MAX_SYSVAL_COUNT 32
  33
  34 /* Allow 2D of sysval IDs, while allowing nonparametric sysvals to equal
  35  * their class for equal comparison */
  36
  37 #define PAN_SYSVAL(type, no) (((no) << 16) | PAN_SYSVAL_##type)
  38 #define PAN_SYSVAL_TYPE(sysval) ((sysval) & 0xffff)
  39 #define PAN_SYSVAL_ID(sysval) ((sysval) >> 16)
  40
  41 /* Define some common types. We start at one for easy indexing of hash
  42  * tables internal to the compiler */
  43
  44 enum {
  45         PAN_SYSVAL_VIEWPORT_SCALE = 1,
  46         PAN_SYSVAL_VIEWPORT_OFFSET = 2,
  47         PAN_SYSVAL_TEXTURE_SIZE = 3,
  48 } pan_sysval;
  49
  50 #define PAN_TXS_SYSVAL_ID(texidx, dim, is_array)          \
  51         ((texidx) | ((dim) << 7) | ((is_array) ? (1 << 9) : 0))
  52
  53 #define PAN_SYSVAL_ID_TO_TXS_TEX_IDX(id)        ((id) & 0x7f)
  54 #define PAN_SYSVAL_ID_TO_TXS_DIM(id)            (((id) >> 7) & 0x3)
  55 #define PAN_SYSVAL_ID_TO_TXS_IS_ARRAY(id)       !!((id) & (1 << 9))
  56
  57 typedef struct {
  58         int work_register_count;
  59         int uniform_count;
  60         int uniform_cutoff;
  61
  62         int attribute_count;
  63         int varying_count;
  64
  65         /* Prepended before uniforms, mapping to SYSVAL_ names for the
  66          * sysval */
  67
  68         unsigned sysval_count;
  69         unsigned sysvals[MAX_SYSVAL_COUNT];
  70
  71         unsigned varyings[32];
  72
  73         /* Boolean properties of the program */
  74         bool can_discard;
  75         bool writes_point_size;
  76
  77         int first_tag;
  78
  79         struct util_dynarray compiled;
  80
  81         /* For a blend shader using a constant color -- patch point. If
  82          * negative, there's no constant. */
  83
  84         int blend_patch_offset;
  85
  86         /* IN: For a fragment shader with a lowered alpha test, the ref value */
  87         float alpha_ref;
  88 } midgard_program;
  89
  90 int
  91 midgard_compile_shader_nir(nir_shader *nir, midgard_program *program, bool is_blend);
  92
  93 /* NIR options are shared between the standalone compiler and the online
  94  * compiler. Defining it here is the simplest, though maybe not the Right
  95  * solution. */
  96
  97 static const nir_shader_compiler_options midgard_nir_options = {
  98         .lower_ffma = true,
  99         .lower_sub = true,
 100         .lower_scmp = true,
 101         .lower_flrp32 = true,
 102         .lower_flrp64 = true,
 103         .lower_ffract = true,
 104         .lower_fmod = true,
 105         .lower_fdiv = true,
 106         .lower_idiv = true,
 107         .lower_isign = true,
 108         .lower_fpow = true,
 109         .lower_find_lsb = true,
 110
 111         .lower_wpos_pntc = true,
 112
 113         /* TODO: We have native ops to help here, which we'll want to look into
 114          * eventually */
 115         .lower_fsign = true,
 116
 117         .vertex_id_zero_based = true,
 118         .lower_extract_byte = true,
 119         .lower_extract_word = true,
 120         .lower_rotate = true,
 121
 122         .lower_doubles_options = nir_lower_dmod,
 123
 124         .vectorize_io = true,
 125 };
 126
 127 #endif