src/gallium/drivers/radeonsi/radeonsi_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 RADEONSI_SHADER_H
  30 #define RADEONSI_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_VERTEX_BUFFER   6
  38 #define SI_SGPR_START_INSTANCE  8
  39
  40 #define SI_VS_NUM_USER_SGPR     9
  41 #define SI_PS_NUM_USER_SGPR     6
  42
  43 /* LLVM function parameter indices */
  44 #define SI_PARAM_CONST          0
  45 #define SI_PARAM_SAMPLER        1
  46 #define SI_PARAM_RESOURCE       2
  47
  48 /* VS only parameters */
  49 #define SI_PARAM_VERTEX_BUFFER  3
  50 #define SI_PARAM_START_INSTANCE 4
  51 #define SI_PARAM_VERTEX_ID      5
  52 #define SI_PARAM_DUMMY_0        6
  53 #define SI_PARAM_DUMMY_1        7
  54 #define SI_PARAM_INSTANCE_ID    8
  55
  56 /* PS only parameters */
  57 #define SI_PARAM_PRIM_MASK              3
  58 #define SI_PARAM_PERSP_SAMPLE           4
  59 #define SI_PARAM_PERSP_CENTER           5
  60 #define SI_PARAM_PERSP_CENTROID         6
  61 #define SI_PARAM_PERSP_PULL_MODEL       7
  62 #define SI_PARAM_LINEAR_SAMPLE          8
  63 #define SI_PARAM_LINEAR_CENTER          9
  64 #define SI_PARAM_LINEAR_CENTROID        10
  65 #define SI_PARAM_LINE_STIPPLE_TEX       11
  66 #define SI_PARAM_POS_X_FLOAT            12
  67 #define SI_PARAM_POS_Y_FLOAT            13
  68 #define SI_PARAM_POS_Z_FLOAT            14
  69 #define SI_PARAM_POS_W_FLOAT            15
  70 #define SI_PARAM_FRONT_FACE             16
  71 #define SI_PARAM_ANCILLARY              17
  72 #define SI_PARAM_SAMPLE_COVERAGE        18
  73 #define SI_PARAM_POS_FIXED_PT           19
  74
  75 struct si_shader_io {
  76         unsigned                name;
  77         int                     sid;
  78         unsigned                param_offset;
  79         unsigned                interpolate;
  80         bool                    centroid;
  81 };
  82
  83 struct si_pipe_shader;
  84
  85 struct si_pipe_shader_selector {
  86         struct si_pipe_shader *current;
  87
  88         struct tgsi_token       *tokens;
  89         struct pipe_stream_output_info  so;
  90
  91         unsigned        num_shaders;
  92
  93         /* PIPE_SHADER_[VERTEX|FRAGMENT|...] */
  94         unsigned        type;
  95
  96         /* 1 when the shader contains
  97          * TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS, otherwise it's 0.
  98          * Used to determine whether we need to include nr_cbufs in the key */
  99         unsigned        fs_write_all;
 100 };
 101
 102 struct si_shader {
 103         unsigned                ninput;
 104         struct si_shader_io     input[40];
 105
 106         unsigned                noutput;
 107         struct si_shader_io     output[40];
 108
 109         unsigned                ninterp;
 110         bool                    uses_kill;
 111         bool                    uses_instanceid;
 112         bool                    fs_write_all;
 113         bool                    vs_out_misc_write;
 114         bool                    vs_out_point_size;
 115         unsigned                nr_cbufs;
 116         unsigned                nr_pos_exports;
 117         unsigned                clip_dist_write;
 118 };
 119
 120 union si_shader_key {
 121         struct {
 122                 unsigned        export_16bpc:8;
 123                 unsigned        nr_cbufs:4;
 124                 unsigned        color_two_side:1;
 125                 unsigned        alpha_func:3;
 126                 unsigned        flatshade:1;
 127                 unsigned        alpha_to_one:1;
 128                 float           alpha_ref;
 129         } ps;
 130         struct {
 131                 unsigned        instance_divisors[PIPE_MAX_ATTRIBS];
 132                 unsigned        ucps_enabled:2;
 133         } vs;
 134 };
 135
 136 struct si_pipe_shader {
 137         struct si_pipe_shader_selector  *selector;
 138         struct si_pipe_shader           *next_variant;
 139         struct si_shader                shader;
 140         struct si_pm4_state             *pm4;
 141         struct si_resource              *bo;
 142         unsigned                        num_sgprs;
 143         unsigned                        num_vgprs;
 144         unsigned                        lds_size;
 145         unsigned                        spi_ps_input_ena;
 146         unsigned                        spi_shader_col_format;
 147         unsigned                        cb_shader_mask;
 148         bool                            cb0_is_integer;
 149         unsigned                        sprite_coord_enable;
 150         unsigned                        so_strides[4];
 151         union si_shader_key             key;
 152 };
 153
 154 /* radeonsi_shader.c */
 155 int si_pipe_shader_create(struct pipe_context *ctx, struct si_pipe_shader *shader);
 156 int si_pipe_shader_create(struct pipe_context *ctx, struct si_pipe_shader *shader);
 157 int si_compile_llvm(struct r600_context *rctx, struct si_pipe_shader *shader,
 158                                                         LLVMModuleRef mod);
 159 void si_pipe_shader_destroy(struct pipe_context *ctx, struct si_pipe_shader *shader);
 160
 161 #endif