src/gallium/drivers/r600/r600_shader.h

   1 /*
   2  * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
   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 #ifndef R600_SHADER_H
  24 #define R600_SHADER_H
  25
  26 #include "r600_asm.h"
  27
  28
  29 #ifdef __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 /* Valid shader configurations:
  34  *
  35  * API shaders       VS | TCS | TES | GS |pass| PS
  36  * are compiled as:     |     |     |    |thru|
  37  *                      |     |     |    |    |
  38  * Only VS & PS:     VS | --  | --  | -- | -- | PS
  39  * With GS:          ES | --  | --  | GS | VS | PS
  40  * With Tessel.:     LS | HS  | VS  | -- | -- | PS
  41  * With both:        LS | HS  | ES  | GS | VS | PS
  42  */
  43
  44 struct r600_shader_io {
  45         unsigned                name;
  46         unsigned                gpr;
  47         unsigned                done;
  48         int                     sid;
  49         int                     spi_sid;
  50         unsigned                interpolate;
  51         unsigned                ij_index;
  52         unsigned        interpolate_location; //  TGSI_INTERPOLATE_LOC_CENTER, CENTROID, SAMPLE
  53         unsigned                lds_pos; /* for evergreen */
  54         unsigned                back_color_input;
  55         unsigned                write_mask;
  56         int                             ring_offset;
  57 };
  58
  59 struct r600_shader {
  60         unsigned                processor_type;
  61         struct r600_bytecode            bc;
  62         unsigned                ninput;
  63         unsigned                noutput;
  64         unsigned                nlds;
  65         struct r600_shader_io   input[40];
  66         struct r600_shader_io   output[40];
  67         boolean                 uses_kill;
  68         boolean                 fs_write_all;
  69         boolean                 two_side;
  70         /* Number of color outputs in the TGSI shader,
  71          * sometimes it could be higher than nr_cbufs (bug?).
  72          * Also with writes_all property on eg+ it will be set to max CB number */
  73         unsigned                nr_ps_max_color_exports;
  74         /* Real number of ps color exports compiled in the bytecode */
  75         unsigned                nr_ps_color_exports;
  76         /* bit n is set if the shader writes gl_ClipDistance[n] */
  77         unsigned                clip_dist_write;
  78         boolean                 vs_position_window_space;
  79         /* flag is set if the shader writes VS_OUT_MISC_VEC (e.g. for PSIZE) */
  80         boolean                 vs_out_misc_write;
  81         boolean                 vs_out_point_size;
  82         boolean                 vs_out_layer;
  83         boolean                 vs_out_viewport;
  84         boolean                 vs_out_edgeflag;
  85         boolean                 has_txq_cube_array_z_comp;
  86         boolean                 uses_tex_buffers;
  87         boolean                 gs_prim_id_input;
  88
  89         uint8_t                 ps_conservative_z;
  90
  91         /* Size in bytes of a data item in the ring(s) (single vertex data).
  92            Stages with only one ring items 123 will be set to 0. */
  93         unsigned                ring_item_sizes[4];
  94
  95         unsigned                indirect_files;
  96         unsigned                max_arrays;
  97         unsigned                num_arrays;
  98         unsigned                vs_as_es;
  99         unsigned                vs_as_ls;
 100         unsigned                vs_as_gs_a;
 101         unsigned                tes_as_es;
 102         unsigned                tcs_prim_mode;
 103         unsigned                ps_prim_id_input;
 104         struct r600_shader_array * arrays;
 105
 106         boolean                 uses_doubles;
 107 };
 108
 109 union r600_shader_key {
 110         struct {
 111                 unsigned        nr_cbufs:4;
 112                 unsigned        color_two_side:1;
 113                 unsigned        alpha_to_one:1;
 114         } ps;
 115         struct {
 116                 unsigned        prim_id_out:8;
 117                 unsigned        as_es:1; /* export shader */
 118                 unsigned        as_ls:1; /* local shader */
 119                 unsigned        as_gs_a:1;
 120         } vs;
 121         struct {
 122                 unsigned        as_es:1;
 123         } tes;
 124         struct {
 125                 unsigned        prim_mode:3;
 126         } tcs;
 127 };
 128
 129 struct r600_shader_array {
 130         unsigned gpr_start;
 131         unsigned gpr_count;
 132         unsigned comp_mask;
 133 };
 134
 135 struct r600_pipe_shader {
 136         struct r600_pipe_shader_selector *selector;
 137         struct r600_pipe_shader *next_variant;
 138         /* for GS - corresponding copy shader (installed as VS) */
 139         struct r600_pipe_shader *gs_copy_shader;
 140         struct r600_shader      shader;
 141         struct r600_command_buffer command_buffer; /* register writes */
 142         struct r600_resource    *bo;
 143         unsigned                sprite_coord_enable;
 144         unsigned                flatshade;
 145         unsigned                pa_cl_vs_out_cntl;
 146         unsigned                nr_ps_color_outputs;
 147         union r600_shader_key   key;
 148         unsigned                db_shader_control;
 149         unsigned                ps_depth_export;
 150         unsigned                enabled_stream_buffers_mask;
 151 };
 152
 153 /* return the table index 0-5 for TGSI_INTERPOLATE_LINEAR/PERSPECTIVE and
 154  TGSI_INTERPOLATE_LOC_CENTER/SAMPLE/COUNT. Other input values return -1. */
 155 int eg_get_interpolator_index(unsigned interpolate, unsigned location);
 156
 157 int r600_get_lds_unique_index(unsigned semantic_name, unsigned index);
 158
 159 #ifdef __cplusplus
 160 }  // extern "C"
 161 #endif
 162
 163
 164 #endif