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 struct radeon_shader_binary;
  37
  38 #define SI_SGPR_RW_BUFFERS      0  /* rings (& stream-out, VS only) */
  39 #define SI_SGPR_CONST           2
  40 #define SI_SGPR_SAMPLER         4
  41 #define SI_SGPR_RESOURCE        6
  42 #define SI_SGPR_VERTEX_BUFFER   8  /* VS only */
  43 #define SI_SGPR_BASE_VERTEX     10 /* VS only */
  44 #define SI_SGPR_START_INSTANCE  11 /* VS only */
  45 #define SI_SGPR_ALPHA_REF       8  /* PS only */
  46
  47 #define SI_VS_NUM_USER_SGPR     12
  48 #define SI_GS_NUM_USER_SGPR     8
  49 #define SI_GSCOPY_NUM_USER_SGPR 4
  50 #define SI_PS_NUM_USER_SGPR     9
  51
  52 /* LLVM function parameter indices */
  53 #define SI_PARAM_RW_BUFFERS     0
  54 #define SI_PARAM_CONST          1
  55 #define SI_PARAM_SAMPLER        2
  56 #define SI_PARAM_RESOURCE       3
  57
  58 /* VS only parameters */
  59 #define SI_PARAM_VERTEX_BUFFER  4
  60 #define SI_PARAM_BASE_VERTEX    5
  61 #define SI_PARAM_START_INSTANCE 6
  62 /* the other VS parameters are assigned dynamically */
  63
  64 /* ES only parameters */
  65 #define SI_PARAM_ES2GS_OFFSET   7
  66
  67 /* GS only parameters */
  68 #define SI_PARAM_GS2VS_OFFSET   4
  69 #define SI_PARAM_GS_WAVE_ID     5
  70 #define SI_PARAM_VTX0_OFFSET    6
  71 #define SI_PARAM_VTX1_OFFSET    7
  72 #define SI_PARAM_PRIMITIVE_ID   8
  73 #define SI_PARAM_VTX2_OFFSET    9
  74 #define SI_PARAM_VTX3_OFFSET    10
  75 #define SI_PARAM_VTX4_OFFSET    11
  76 #define SI_PARAM_VTX5_OFFSET    12
  77 #define SI_PARAM_GS_INSTANCE_ID 13
  78
  79 /* PS only parameters */
  80 #define SI_PARAM_ALPHA_REF              4
  81 #define SI_PARAM_PRIM_MASK              5
  82 #define SI_PARAM_PERSP_SAMPLE           6
  83 #define SI_PARAM_PERSP_CENTER           7
  84 #define SI_PARAM_PERSP_CENTROID         8
  85 #define SI_PARAM_PERSP_PULL_MODEL       9
  86 #define SI_PARAM_LINEAR_SAMPLE          10
  87 #define SI_PARAM_LINEAR_CENTER          11
  88 #define SI_PARAM_LINEAR_CENTROID        12
  89 #define SI_PARAM_LINE_STIPPLE_TEX       13
  90 #define SI_PARAM_POS_X_FLOAT            14
  91 #define SI_PARAM_POS_Y_FLOAT            15
  92 #define SI_PARAM_POS_Z_FLOAT            16
  93 #define SI_PARAM_POS_W_FLOAT            17
  94 #define SI_PARAM_FRONT_FACE             18
  95 #define SI_PARAM_ANCILLARY              19
  96 #define SI_PARAM_SAMPLE_COVERAGE        20
  97 #define SI_PARAM_POS_FIXED_PT           21
  98
  99 #define SI_NUM_PARAMS (SI_PARAM_POS_FIXED_PT + 1)
 100
 101 struct si_shader;
 102
 103 struct si_shader_selector {
 104         struct si_shader *current;
 105
 106         struct tgsi_token       *tokens;
 107         struct pipe_stream_output_info  so;
 108         struct tgsi_shader_info         info;
 109
 110         unsigned        num_shaders;
 111
 112         /* PIPE_SHADER_[VERTEX|FRAGMENT|...] */
 113         unsigned        type;
 114
 115         unsigned        gs_output_prim;
 116         unsigned        gs_max_out_vertices;
 117         uint64_t        gs_used_inputs; /* mask of "get_unique_index" bits */
 118 };
 119
 120 union si_shader_key {
 121         struct {
 122                 unsigned        export_16bpc:8;
 123                 unsigned        last_cbuf:3;
 124                 unsigned        color_two_side:1;
 125                 unsigned        alpha_func:3;
 126                 unsigned        flatshade:1;
 127                 unsigned        alpha_to_one:1;
 128         } ps;
 129         struct {
 130                 unsigned        instance_divisors[SI_NUM_VERTEX_BUFFERS];
 131                 /* The mask of "get_unique_index" bits, needed for ES,
 132                  * it describes how the ES->GS ring buffer is laid out. */
 133                 uint64_t        gs_used_inputs;
 134                 unsigned        as_es:1;
 135         } vs;
 136 };
 137
 138 struct si_shader {
 139         struct si_shader_selector       *selector;
 140         struct si_shader                *next_variant;
 141
 142         struct si_shader                *gs_copy_shader;
 143         struct si_pm4_state             *pm4;
 144         struct r600_resource            *bo;
 145         struct r600_resource            *scratch_bo;
 146         unsigned                        num_sgprs;
 147         unsigned                        num_vgprs;
 148         unsigned                        lds_size;
 149         unsigned                        spi_ps_input_ena;
 150         unsigned                        scratch_bytes_per_wave;
 151         unsigned                        spi_shader_col_format;
 152         unsigned                        spi_shader_z_format;
 153         unsigned                        db_shader_control;
 154         unsigned                        cb_shader_mask;
 155         union si_shader_key             key;
 156
 157         unsigned                nparam;
 158         unsigned                vs_output_param_offset[PIPE_MAX_SHADER_OUTPUTS];
 159         unsigned                ps_input_param_offset[PIPE_MAX_SHADER_INPUTS];
 160
 161         bool                    uses_instanceid;
 162         unsigned                nr_pos_exports;
 163         bool                    is_gs_copy_shader;
 164 };
 165
 166 static inline struct tgsi_shader_info *si_get_vs_info(struct si_context *sctx)
 167 {
 168         return sctx->gs_shader ? &sctx->gs_shader->info
 169                                : &sctx->vs_shader->info;
 170 }
 171
 172 static inline struct si_shader* si_get_vs_state(struct si_context *sctx)
 173 {
 174         if (sctx->gs_shader)
 175                 return sctx->gs_shader->current->gs_copy_shader;
 176         else
 177                 return sctx->vs_shader->current;
 178 }
 179
 180 /* radeonsi_shader.c */
 181 int si_shader_create(struct si_screen *sscreen, struct si_shader *shader);
 182 int si_compile_llvm(struct si_screen *sscreen, struct si_shader *shader,
 183                     LLVMModuleRef mod);
 184 void si_shader_destroy(struct pipe_context *ctx, struct si_shader *shader);
 185 unsigned si_shader_io_get_unique_index(unsigned semantic_name, unsigned index);
 186 int si_shader_binary_read(struct si_screen *sscreen, struct si_shader *shader,
 187                 const struct radeon_shader_binary *binary);
 188 void si_shader_binary_read_config(const struct radeon_shader_binary *binary,
 189                                 struct si_shader *shader,
 190                                 unsigned symbol_offset);
 191
 192 #endif