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
  39 /* Define some common types. We start at one for easy indexing of hash
  40  * tables internal to the compiler */
  41
  42 enum {
  43         PAN_SYSVAL_VIEWPORT_SCALE = 1,
  44         PAN_SYSVAL_VIEWPORT_OFFSET = 2,
  45 } pan_sysval;
  46
  47 typedef struct {
  48         int work_register_count;
  49         int uniform_count;
  50         int uniform_cutoff;
  51
  52         int attribute_count;
  53         int varying_count;
  54
  55         /* Prepended before uniforms, mapping to SYSVAL_ names for the
  56          * sysval */
  57
  58         unsigned sysval_count;
  59         unsigned sysvals[MAX_SYSVAL_COUNT];
  60
  61         unsigned varyings[32];
  62
  63         /* Boolean properties of the program */
  64         bool can_discard;
  65         bool writes_point_size;
  66
  67         int first_tag;
  68
  69         struct util_dynarray compiled;
  70
  71         /* For a blend shader using a constant color -- patch point. If
  72          * negative, there's no constant. */
  73
  74         int blend_patch_offset;
  75
  76         /* IN: For a fragment shader with a lowered alpha test, the ref value */
  77         float alpha_ref;
  78 } midgard_program;
  79
  80 int
  81 midgard_compile_shader_nir(nir_shader *nir, midgard_program *program, bool is_blend);
  82
  83 /* NIR options are shared between the standalone compiler and the online
  84  * compiler. Defining it here is the simplest, though maybe not the Right
  85  * solution. */
  86
  87 static const nir_shader_compiler_options midgard_nir_options = {
  88         .lower_ffma = true,
  89         .lower_sub = true,
  90         .lower_scmp = true,
  91         .lower_flrp32 = true,
  92         .lower_flrp64 = true,
  93         .lower_ffract = true,
  94         .lower_fmod = true,
  95         .lower_fdiv = true,
  96         .lower_idiv = true,
  97         .lower_isign = true,
  98         .lower_fpow = true,
  99         .lower_find_lsb = true,
 100
 101         .lower_wpos_pntc = true,
 102
 103         /* TODO: We have native ops to help here, which we'll want to look into
 104          * eventually */
 105         .lower_fsign = true,
 106
 107         .vertex_id_zero_based = true,
 108         .lower_extract_byte = true,
 109         .lower_extract_word = true,
 110
 111         .lower_doubles_options = nir_lower_dmod,
 112 };
 113
 114 #endif