src/gallium/drivers/radeonsi/si_shader.h

   1 /*
   2  * Copyright 2012 Advanced Micro Devices, Inc.
   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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *      Tom Stellard <thomas.stellard@amd.com>
  25  *      Michel Dänzer <michel.daenzer@amd.com>
  26  *      Christian König <christian.koenig@amd.com>
  27  */
  28
  29 #ifndef SI_SHADER_H
  30 #define SI_SHADER_H
  31
  32 #include <llvm-c/Core.h> /* LLVMModuleRef */
  33 #include "tgsi/tgsi_scan.h"
  34 #include "si_state.h"
  35
  36 #define SI_SGPR_RW_BUFFERS      0  /* rings (& stream-out, VS only) */
  37 #define SI_SGPR_CONST           2
  38 #define SI_SGPR_SAMPLER         4
  39 #define SI_SGPR_RESOURCE        6
  40 #define SI_SGPR_VERTEX_BUFFER   8  /* VS only */
  41 #define SI_SGPR_BASE_VERTEX     10 /* VS only */
  42 #define SI_SGPR_START_INSTANCE  11 /* VS only */
  43 #define SI_SGPR_ALPHA_REF       8  /* PS only */
  44
  45 #define SI_VS_NUM_USER_SGPR     12
  46 #define SI_GS_NUM_USER_SGPR     8
  47 #define SI_GSCOPY_NUM_USER_SGPR 4
  48 #define SI_PS_NUM_USER_SGPR     9
  49
  50 /* LLVM function parameter indices */
  51 #define SI_PARAM_RW_BUFFERS     0
  52 #define SI_PARAM_CONST          1
  53 #define SI_PARAM_SAMPLER        2
  54 #define SI_PARAM_RESOURCE       3
  55
  56 /* VS only parameters */
  57 #define SI_PARAM_VERTEX_BUFFER  4
  58 #define SI_PARAM_BASE_VERTEX    5
  59 #define SI_PARAM_START_INSTANCE 6
  60 /* the other VS parameters are assigned dynamically */
  61
  62 /* ES only parameters */
  63 #define SI_PARAM_ES2GS_OFFSET   7
  64
  65 /* GS only parameters */
  66 #define SI_PARAM_GS2VS_OFFSET   4
  67 #define SI_PARAM_GS_WAVE_ID     5
  68 #define SI_PARAM_VTX0_OFFSET    6
  69 #define SI_PARAM_VTX1_OFFSET    7
  70 #define SI_PARAM_PRIMITIVE_ID   8
  71 #define SI_PARAM_VTX2_OFFSET    9
  72 #define SI_PARAM_VTX3_OFFSET    10
  73 #define SI_PARAM_VTX4_OFFSET    11
  74 #define SI_PARAM_VTX5_OFFSET    12
  75 #define SI_PARAM_GS_INSTANCE_ID 13
  76
  77 /* PS only parameters */
  78 #define SI_PARAM_ALPHA_REF              4
  79 #define SI_PARAM_PRIM_MASK              5
  80 #define SI_PARAM_PERSP_SAMPLE           6
  81 #define SI_PARAM_PERSP_CENTER           7
  82 #define SI_PARAM_PERSP_CENTROID         8
  83 #define SI_PARAM_PERSP_PULL_MODEL       9
  84 #define SI_PARAM_LINEAR_SAMPLE          10
  85 #define SI_PARAM_LINEAR_CENTER          11
  86 #define SI_PARAM_LINEAR_CENTROID        12
  87 #define SI_PARAM_LINE_STIPPLE_TEX       13
  88 #define SI_PARAM_POS_X_FLOAT            14
  89 #define SI_PARAM_POS_Y_FLOAT            15
  90 #define SI_PARAM_POS_Z_FLOAT            16
  91 #define SI_PARAM_POS_W_FLOAT            17
  92 #define SI_PARAM_FRONT_FACE             18
  93 #define SI_PARAM_ANCILLARY              19
  94 #define SI_PARAM_SAMPLE_COVERAGE        20
  95 #define SI_PARAM_POS_FIXED_PT           21
  96
  97 #define SI_NUM_PARAMS (SI_PARAM_POS_FIXED_PT + 1)
  98
  99 struct si_shader_input {
 100         unsigned                name;
 101         int                     sid;
 102         unsigned                param_offset;
 103         unsigned                index;
 104         unsigned                interpolate;
 105 };
 106
 107 struct si_shader_output {
 108         unsigned                name;
 109         int                     sid;
 110         unsigned                param_offset;
 111         unsigned                index;
 112 };
 113
 114 struct si_shader;
 115
 116 struct si_shader_selector {
 117         struct si_shader *current;
 118
 119         struct tgsi_token       *tokens;
 120         struct pipe_stream_output_info  so;
 121         struct tgsi_shader_info         info;
 122
 123         unsigned        num_shaders;
 124
 125         /* PIPE_SHADER_[VERTEX|FRAGMENT|...] */
 126         unsigned        type;
 127
 128         unsigned        gs_output_prim;
 129         unsigned        gs_max_out_vertices;
 130         uint64_t        gs_used_inputs; /* mask of "get_unique_index" bits */
 131 };
 132
 133 union si_shader_key {
 134         struct {
 135                 unsigned        export_16bpc:8;
 136                 unsigned        last_cbuf:3;
 137                 unsigned        color_two_side:1;
 138                 unsigned        alpha_func:3;
 139                 unsigned        flatshade:1;
 140                 unsigned        alpha_to_one:1;
 141         } ps;
 142         struct {
 143                 unsigned        instance_divisors[SI_NUM_VERTEX_BUFFERS];
 144                 /* The mask of "get_unique_index" bits, needed for ES,
 145                  * it describes how the ES->GS ring buffer is laid out. */
 146                 uint64_t        gs_used_inputs;
 147                 unsigned        as_es:1;
 148         } vs;
 149 };
 150
 151 struct si_shader {
 152         struct si_shader_selector       *selector;
 153         struct si_shader                *next_variant;
 154
 155         struct si_shader                *gs_copy_shader;
 156         struct si_pm4_state             *pm4;
 157         struct r600_resource            *bo;
 158         struct r600_resource            *scratch_bo;
 159         unsigned                        num_sgprs;
 160         unsigned                        num_vgprs;
 161         unsigned                        lds_size;
 162         unsigned                        spi_ps_input_ena;
 163         unsigned                        scratch_bytes_per_wave;
 164         unsigned                        spi_shader_col_format;
 165         unsigned                        spi_shader_z_format;
 166         unsigned                        db_shader_control;
 167         unsigned                        cb_shader_mask;
 168         union si_shader_key             key;
 169
 170         unsigned                ninput;
 171         struct si_shader_input  input[40];
 172
 173         unsigned                noutput;
 174         struct si_shader_output output[40];
 175
 176         unsigned                nparam;
 177         unsigned                vs_output_param_offset[PIPE_MAX_SHADER_OUTPUTS];
 178         unsigned                ps_input_param_offset[PIPE_MAX_SHADER_INPUTS];
 179
 180         bool                    uses_instanceid;
 181         bool                    vs_out_misc_write;
 182         bool                    vs_out_point_size;
 183         bool                    vs_out_edgeflag;
 184         bool                    vs_out_layer;
 185         unsigned                nr_pos_exports;
 186         unsigned                clip_dist_write;
 187         bool                    is_gs_copy_shader;
 188 };
 189
 190 static inline struct si_shader* si_get_vs_state(struct si_context *sctx)
 191 {
 192         if (sctx->gs_shader)
 193                 return sctx->gs_shader->current->gs_copy_shader;
 194         else
 195                 return sctx->vs_shader->current;
 196 }
 197
 198 /* radeonsi_shader.c */
 199 int si_shader_create(struct si_screen *sscreen, struct si_shader *shader);
 200 int si_compile_llvm(struct si_screen *sscreen, struct si_shader *shader,
 201                     LLVMModuleRef mod);
 202 void si_shader_destroy(struct pipe_context *ctx, struct si_shader *shader);
 203 unsigned si_shader_io_get_unique_index(unsigned semantic_name, unsigned index);
 204
 205 #endif