src/gallium/drivers/freedreno/a6xx/fd6_texture.h

   1 /*
   2  * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
   3  * Copyright © 2018 Google, Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  * Authors:
  25  *    Rob Clark <robclark@freedesktop.org>
  26  */
  27
  28 #ifndef FD6_TEXTURE_H_
  29 #define FD6_TEXTURE_H_
  30
  31 #include "pipe/p_context.h"
  32
  33 #include "freedreno_texture.h"
  34 #include "freedreno_resource.h"
  35
  36 #include "fd6_context.h"
  37 #include "fd6_format.h"
  38
  39 struct fd6_sampler_stateobj {
  40         struct pipe_sampler_state base;
  41         uint32_t texsamp0, texsamp1, texsamp2, texsamp3;
  42         bool saturate_s, saturate_t, saturate_r;
  43         bool needs_border;
  44         uint16_t seqno;
  45 };
  46
  47 static inline struct fd6_sampler_stateobj *
  48 fd6_sampler_stateobj(struct pipe_sampler_state *samp)
  49 {
  50         return (struct fd6_sampler_stateobj *)samp;
  51 }
  52
  53 struct fd6_pipe_sampler_view {
  54         struct pipe_sampler_view base;
  55         uint32_t texconst0, texconst1, texconst2, texconst3, texconst5;
  56         uint32_t texconst6, texconst7, texconst8, texconst9, texconst10, texconst11;
  57         uint32_t offset, ubwc_offset;
  58         uint16_t seqno;
  59         bool ubwc_enabled;
  60 };
  61
  62 static inline struct fd6_pipe_sampler_view *
  63 fd6_pipe_sampler_view(struct pipe_sampler_view *pview)
  64 {
  65         return (struct fd6_pipe_sampler_view *)pview;
  66 }
  67
  68 void fd6_texture_init(struct pipe_context *pctx);
  69 void fd6_texture_fini(struct pipe_context *pctx);
  70
  71 static inline enum a6xx_tex_type
  72 fd6_tex_type(unsigned target)
  73 {
  74         switch (target) {
  75         default:
  76                 assert(0);
  77         case PIPE_BUFFER:
  78         case PIPE_TEXTURE_1D:
  79         case PIPE_TEXTURE_1D_ARRAY:
  80                 return A6XX_TEX_1D;
  81         case PIPE_TEXTURE_RECT:
  82         case PIPE_TEXTURE_2D:
  83         case PIPE_TEXTURE_2D_ARRAY:
  84                 return A6XX_TEX_2D;
  85         case PIPE_TEXTURE_3D:
  86                 return A6XX_TEX_3D;
  87         case PIPE_TEXTURE_CUBE:
  88         case PIPE_TEXTURE_CUBE_ARRAY:
  89                 return A6XX_TEX_CUBE;
  90         }
  91 }
  92
  93 static inline unsigned
  94 fd6_border_color_offset(struct fd_context *ctx, enum pipe_shader_type type,
  95                 struct fd_texture_stateobj *tex)
  96 {
  97         /* Currently we put the FS border-color state after VS.  Possibly
  98          * we could swap the order.
  99          *
 100          * This will need update for HS/DS/GS
 101          */
 102         if (type != PIPE_SHADER_FRAGMENT)
 103                 return 0;
 104
 105         unsigned needs_border = false;
 106
 107         for (unsigned i = 0; i < tex->num_samplers; i++) {
 108                 if (!tex->samplers[i])
 109                         continue;
 110
 111                 struct fd6_sampler_stateobj *sampler =
 112                         fd6_sampler_stateobj(tex->samplers[i]);
 113
 114                 needs_border |= sampler->needs_border;
 115         }
 116
 117         if (!needs_border)
 118                 return 0;
 119
 120         return ctx->tex[PIPE_SHADER_VERTEX].num_samplers;
 121 }
 122
 123 /*
 124  * Texture stateobj:
 125  *
 126  * The sampler and sampler-view state is mapped to a single hardware
 127  * stateobj which can be emit'd as a pointer in a CP_SET_DRAW_STATE
 128  * packet, to avoid the overhead of re-generating the entire cmdstream
 129  * when application toggles thru multiple different texture states.
 130  */
 131
 132 struct fd6_texture_key {
 133         struct {
 134                 /* We need to track the seqno of the rsc as well as of the
 135                  * sampler view, because resource shadowing/etc can result
 136                  * that the underlying bo changes (which means the previous
 137                  * state was no longer valid.
 138                  */
 139                 uint16_t rsc_seqno;
 140                 uint16_t seqno;
 141         } view[16];
 142         struct {
 143                 uint16_t seqno;
 144         } samp[16];
 145         uint8_t type;
 146         uint8_t bcolor_offset;
 147 };
 148
 149 struct fd6_texture_state {
 150         struct fd6_texture_key key;
 151         struct fd_ringbuffer *stateobj;
 152         bool needs_border;
 153 };
 154
 155 struct fd6_texture_state * fd6_texture_state(struct fd_context *ctx,
 156                 enum pipe_shader_type type, struct fd_texture_stateobj *tex);
 157
 158 #endif /* FD6_TEXTURE_H_ */