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
  34 #define SI_SGPR_CONST           0
  35 #define SI_SGPR_SAMPLER         2
  36 #define SI_SGPR_RESOURCE        4
  37 #define SI_SGPR_RW_BUFFERS      6  /* rings (& stream-out, VS only) */
  38 #define SI_SGPR_VERTEX_BUFFER   8  /* VS only */
  39 #define SI_SGPR_BASE_VERTEX     10 /* VS only */
  40 #define SI_SGPR_START_INSTANCE  11 /* VS only */
  41 #define SI_SGPR_ALPHA_REF       8  /* PS only */
  42
  43 #define SI_VS_NUM_USER_SGPR     12
  44 #define SI_GS_NUM_USER_SGPR     8
  45 #define SI_PS_NUM_USER_SGPR     9
  46
  47 /* LLVM function parameter indices */
  48 #define SI_PARAM_CONST          0
  49 #define SI_PARAM_SAMPLER        1
  50 #define SI_PARAM_RESOURCE       2
  51 #define SI_PARAM_RW_BUFFERS     3
  52
  53 /* VS only parameters */
  54 #define SI_PARAM_VERTEX_BUFFER  4
  55 #define SI_PARAM_BASE_VERTEX    5
  56 #define SI_PARAM_START_INSTANCE 6
  57 /* the other VS parameters are assigned dynamically */
  58
  59 /* ES only parameters */
  60 #define SI_PARAM_ES2GS_OFFSET   7
  61
  62 /* GS only parameters */
  63 #define SI_PARAM_GS2VS_OFFSET   4
  64 #define SI_PARAM_GS_WAVE_ID     5
  65 #define SI_PARAM_VTX0_OFFSET    6
  66 #define SI_PARAM_VTX1_OFFSET    7
  67 #define SI_PARAM_PRIMITIVE_ID   8
  68 #define SI_PARAM_VTX2_OFFSET    9
  69 #define SI_PARAM_VTX3_OFFSET    10
  70 #define SI_PARAM_VTX4_OFFSET    11
  71 #define SI_PARAM_VTX5_OFFSET    12
  72 #define SI_PARAM_GS_INSTANCE_ID 13
  73
  74 /* PS only parameters */
  75 #define SI_PARAM_ALPHA_REF              4
  76 #define SI_PARAM_PRIM_MASK              5
  77 #define SI_PARAM_PERSP_SAMPLE           6
  78 #define SI_PARAM_PERSP_CENTER           7
  79 #define SI_PARAM_PERSP_CENTROID         8
  80 #define SI_PARAM_PERSP_PULL_MODEL       9
  81 #define SI_PARAM_LINEAR_SAMPLE          10
  82 #define SI_PARAM_LINEAR_CENTER          11
  83 #define SI_PARAM_LINEAR_CENTROID        12
  84 #define SI_PARAM_LINE_STIPPLE_TEX       13
  85 #define SI_PARAM_POS_X_FLOAT            14
  86 #define SI_PARAM_POS_Y_FLOAT            15
  87 #define SI_PARAM_POS_Z_FLOAT            16
  88 #define SI_PARAM_POS_W_FLOAT            17
  89 #define SI_PARAM_FRONT_FACE             18
  90 #define SI_PARAM_ANCILLARY              19
  91 #define SI_PARAM_SAMPLE_COVERAGE        20
  92 #define SI_PARAM_POS_FIXED_PT           21
  93
  94 #define SI_NUM_PARAMS (SI_PARAM_POS_FIXED_PT + 1)
  95
  96 struct si_shader_input {
  97         unsigned                name;
  98         int                     sid;
  99         unsigned                param_offset;
 100         unsigned                index;
 101         unsigned                interpolate;
 102         bool                    centroid;
 103 };
 104
 105 struct si_shader_output {
 106         unsigned                name;
 107         int                     sid;
 108         unsigned                param_offset;
 109         unsigned                index;
 110         unsigned                usage;
 111 };
 112
 113 struct si_pipe_shader;
 114
 115 struct si_pipe_shader_selector {
 116         struct si_pipe_shader *current;
 117
 118         struct tgsi_token       *tokens;
 119         struct pipe_stream_output_info  so;
 120
 121         unsigned        num_shaders;
 122
 123         /* PIPE_SHADER_[VERTEX|FRAGMENT|...] */
 124         unsigned        type;
 125
 126         /* 1 when the shader contains
 127          * TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS, otherwise it's 0.
 128          * Used to determine whether we need to include nr_cbufs in the key */
 129         unsigned        fs_write_all;
 130 };
 131
 132 struct si_shader {
 133         unsigned                ninput;
 134         struct si_shader_input  input[40];
 135
 136         unsigned                noutput;
 137         struct si_shader_output output[40];
 138
 139         /* geometry shader properties */
 140         unsigned                gs_input_prim;
 141         unsigned                gs_output_prim;
 142         unsigned                gs_max_out_vertices;
 143
 144         unsigned                nparam;
 145         bool                    uses_instanceid;
 146         bool                    fs_write_all;
 147         bool                    vs_out_misc_write;
 148         bool                    vs_out_point_size;
 149         bool                    vs_out_edgeflag;
 150         bool                    vs_out_layer;
 151         unsigned                nr_pos_exports;
 152         unsigned                clip_dist_write;
 153 };
 154
 155 union si_shader_key {
 156         struct {
 157                 unsigned        export_16bpc:8;
 158                 unsigned        nr_cbufs:4;
 159                 unsigned        color_two_side:1;
 160                 unsigned        alpha_func:3;
 161                 unsigned        flatshade:1;
 162                 unsigned        interp_at_sample:1;
 163                 unsigned        alpha_to_one:1;
 164         } ps;
 165         struct {
 166                 unsigned        instance_divisors[PIPE_MAX_ATTRIBS];
 167                 unsigned        ucps_enabled:2;
 168                 unsigned        as_es:1;
 169         } vs;
 170 };
 171
 172 struct si_pipe_shader {
 173         struct si_pipe_shader_selector  *selector;
 174         struct si_pipe_shader           *next_variant;
 175         struct si_pipe_shader           *gs_copy_shader;
 176         struct si_shader                shader;
 177         struct si_pm4_state             *pm4;
 178         struct r600_resource            *bo;
 179         struct r600_resource            *scratch_bo;
 180         unsigned                        num_sgprs;
 181         unsigned                        num_vgprs;
 182         unsigned                        lds_size;
 183         unsigned                        spi_ps_input_ena;
 184         unsigned                        scratch_bytes_per_wave;
 185         unsigned                        spi_shader_col_format;
 186         unsigned                        spi_shader_z_format;
 187         unsigned                        db_shader_control;
 188         unsigned                        cb_shader_mask;
 189         union si_shader_key             key;
 190 };
 191
 192 static inline struct si_shader* si_get_vs_state(struct si_context *sctx)
 193 {
 194         if (sctx->gs_shader)
 195                 return &sctx->gs_shader->current->gs_copy_shader->shader;
 196         else
 197                 return &sctx->vs_shader->current->shader;
 198 }
 199
 200 /* radeonsi_shader.c */
 201 int si_pipe_shader_create(struct pipe_context *ctx, struct si_pipe_shader *shader);
 202 int si_pipe_shader_create(struct pipe_context *ctx, struct si_pipe_shader *shader);
 203 int si_compile_llvm(struct si_context *sctx, struct si_pipe_shader *shader,
 204                                                         LLVMModuleRef mod);
 205 void si_pipe_shader_destroy(struct pipe_context *ctx, struct si_pipe_shader *shader);
 206
 207 #endif