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         unsigned                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         unsigned                uses_interpolate_at_centroid;
  58 };
  59
  60 struct r600_shader_atomic {
  61         unsigned start, end;
  62         unsigned buffer_id;
  63         unsigned hw_idx;
  64         unsigned array_id;
  65 };
  66
  67 struct r600_shader {
  68         unsigned                processor_type;
  69         struct r600_bytecode            bc;
  70         unsigned                ninput;
  71         unsigned                noutput;
  72         unsigned                nhwatomic;
  73         unsigned                nlds;
  74         unsigned                nsys_inputs;
  75         struct r600_shader_io   input[PIPE_MAX_SHADER_INPUTS];
  76         struct r600_shader_io   output[PIPE_MAX_SHADER_OUTPUTS];
  77         struct r600_shader_atomic atomics[8];
  78         unsigned                nhwatomic_ranges;
  79         boolean                 uses_kill;
  80         boolean                 fs_write_all;
  81         boolean                 two_side;
  82         boolean                 needs_scratch_space;
  83         /* Number of color outputs in the TGSI shader,
  84          * sometimes it could be higher than nr_cbufs (bug?).
  85          * Also with writes_all property on eg+ it will be set to max CB number */
  86         unsigned                nr_ps_max_color_exports;
  87         /* Real number of ps color exports compiled in the bytecode */
  88         unsigned                nr_ps_color_exports;
  89         unsigned                ps_color_export_mask;
  90         unsigned                ps_export_highest;
  91         /* bit n is set if the shader writes gl_ClipDistance[n] */
  92         unsigned                cc_dist_mask;
  93         unsigned                clip_dist_write;
  94         unsigned                cull_dist_write;
  95         boolean                 vs_position_window_space;
  96         /* flag is set if the shader writes VS_OUT_MISC_VEC (e.g. for PSIZE) */
  97         boolean                 vs_out_misc_write;
  98         boolean                 vs_out_point_size;
  99         boolean                 vs_out_layer;
 100         boolean                 vs_out_viewport;
 101         boolean                 vs_out_edgeflag;
 102         boolean                 has_txq_cube_array_z_comp;
 103         boolean                 uses_tex_buffers;
 104         boolean                 gs_prim_id_input;
 105         boolean                 gs_tri_strip_adj_fix;
 106         uint8_t                 ps_conservative_z;
 107
 108         /* Size in bytes of a data item in the ring(s) (single vertex data).
 109            Stages with only one ring items 123 will be set to 0. */
 110         unsigned                ring_item_sizes[4];
 111
 112         unsigned                indirect_files;
 113         unsigned                max_arrays;
 114         unsigned                num_arrays;
 115         unsigned                vs_as_es;
 116         unsigned                vs_as_ls;
 117         unsigned                vs_as_gs_a;
 118         unsigned                tes_as_es;
 119         unsigned                tcs_prim_mode;
 120         unsigned                ps_prim_id_input;
 121         struct r600_shader_array * arrays;
 122
 123         boolean                 uses_doubles;
 124         boolean                 uses_atomics;
 125         boolean                 uses_images;
 126         boolean                 uses_helper_invocation;
 127         uint8_t                 atomic_base;
 128         uint8_t                 rat_base;
 129         uint8_t                 image_size_const_offset;
 130 };
 131
 132 union r600_shader_key {
 133         struct {
 134                 unsigned        nr_cbufs:4;
 135                 unsigned        first_atomic_counter:4;
 136                 unsigned        image_size_const_offset:5;
 137                 unsigned        color_two_side:1;
 138                 unsigned        alpha_to_one:1;
 139                 unsigned        apply_sample_id_mask:1;
 140         } ps;
 141         struct {
 142                 unsigned        prim_id_out:8;
 143                 unsigned        first_atomic_counter:4;
 144                 unsigned        as_es:1; /* export shader */
 145                 unsigned        as_ls:1; /* local shader */
 146                 unsigned        as_gs_a:1;
 147         } vs;
 148         struct {
 149                 unsigned        first_atomic_counter:4;
 150                 unsigned        as_es:1;
 151         } tes;
 152         struct {
 153                 unsigned        first_atomic_counter:4;
 154                 unsigned        prim_mode:3;
 155         } tcs;
 156         struct {
 157                 unsigned        first_atomic_counter:4;
 158                 unsigned        tri_strip_adj_fix:1;
 159         } gs;
 160 };
 161
 162 struct r600_shader_array {
 163         unsigned gpr_start;
 164         unsigned gpr_count;
 165         unsigned comp_mask;
 166 };
 167
 168 struct r600_pipe_shader {
 169         struct r600_pipe_shader_selector *selector;
 170         struct r600_pipe_shader *next_variant;
 171         /* for GS - corresponding copy shader (installed as VS) */
 172         struct r600_pipe_shader *gs_copy_shader;
 173         struct r600_shader      shader;
 174         struct r600_command_buffer command_buffer; /* register writes */
 175         struct r600_resource    *bo;
 176         unsigned                sprite_coord_enable;
 177         unsigned                flatshade;
 178         unsigned                pa_cl_vs_out_cntl;
 179         unsigned                nr_ps_color_outputs;
 180         unsigned                ps_color_export_mask;
 181
 182         union r600_shader_key   key;
 183         unsigned                db_shader_control;
 184         unsigned                ps_depth_export;
 185         unsigned                enabled_stream_buffers_mask;
 186         unsigned                scratch_space_needed; /* size of scratch space (if > 0) counted in vec4 */
 187 };
 188
 189 /* return the table index 0-5 for TGSI_INTERPOLATE_LINEAR/PERSPECTIVE and
 190  TGSI_INTERPOLATE_LOC_CENTER/SAMPLE/COUNT. Other input values return -1. */
 191 int eg_get_interpolator_index(unsigned interpolate, unsigned location);
 192
 193 int r600_get_lds_unique_index(unsigned semantic_name, unsigned index);
 194
 195 int generate_gs_copy_shader(struct r600_context *rctx,
 196                             struct r600_pipe_shader *gs,
 197                             struct pipe_stream_output_info *so);
 198
 199 #ifdef __cplusplus
 200 }  // extern "C"
 201 #endif
 202
 203
 204 #endif