lima_texture.c revision 7ec681f3 
1/*
2 * Copyright (c) 2011-2013 Luc Verhaegen <libv@skynet.be>
3 * Copyright (c) 2018-2019 Lima Project
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, sub license,
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
13 * next paragraph) shall be included in all copies or substantial portions
14 * of the 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 NON-INFRINGEMENT. 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
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 */
25
26#include "util/u_memory.h"
27#include "util/u_upload_mgr.h"
28#include "util/u_math.h"
29#include "util/u_debug.h"
30#include "util/u_transfer.h"
31
32#include "lima_bo.h"
33#include "lima_context.h"
34#include "lima_screen.h"
35#include "lima_texture.h"
36#include "lima_resource.h"
37#include "lima_job.h"
38#include "lima_util.h"
39#include "lima_format.h"
40
41#include <drm-uapi/lima_drm.h>
42
43
44#define lima_tex_list_size 64
45
46static_assert(offsetof(lima_tex_desc, va) == 24, "lima_tex_desc->va offset isn't 24");
47
48
49static void
50lima_texture_desc_set_va(lima_tex_desc *desc,
51                         int idx,
52                         uint32_t va)
53{
54   unsigned va_bit_idx = VA_BIT_OFFSET + (VA_BIT_SIZE * idx);
55   unsigned va_idx = va_bit_idx / 32;
56   va_bit_idx %= 32;
57
58   va >>= 6;
59
60   desc->va[va_idx] |= va << va_bit_idx;
61   if (va_bit_idx <= 6)
62      return;
63   desc->va[va_idx + 1] |= va >> (32 - va_bit_idx);
64}
65
66/*
67 * Note: this function is used by both draw and flush code path,
68 * make sure no lima_job_get() is called inside this.
69 */
70void
71lima_texture_desc_set_res(struct lima_context *ctx, lima_tex_desc *desc,
72                          struct pipe_resource *prsc,
73                          unsigned first_level, unsigned last_level, unsigned first_layer)
74{
75   unsigned width, height, layout, i;
76   struct lima_resource *lima_res = lima_resource(prsc);
77
78   width = prsc->width0;
79   height = prsc->height0;
80   if (first_level != 0) {
81      width = u_minify(width, first_level);
82      height = u_minify(height, first_level);
83   }
84
85   desc->format = lima_format_get_texel(prsc->format);
86   desc->swap_r_b = lima_format_get_texel_swap_rb(prsc->format);
87   desc->width  = width;
88   desc->height = height;
89   desc->unknown_3_1 = 1;
90
91   if (lima_res->tiled)
92      layout = 3;
93   else {
94      desc->stride = lima_res->levels[first_level].stride;
95      desc->has_stride = 1;
96      layout = 0;
97   }
98
99   uint32_t base_va = lima_res->bo->va;
100
101   /* attach first level */
102   uint32_t first_va = base_va + lima_res->levels[first_level].offset + first_layer * lima_res->levels[first_level].layer_stride;
103   desc->va_s.va_0 = first_va >> 6;
104   desc->va_s.layout = layout;
105
106   /* Attach remaining levels.
107    * Each subsequent mipmap address is specified using the 26 msbs.
108    * These addresses are then packed continuously in memory */
109   for (i = 1; i <= (last_level - first_level); i++) {
110      uint32_t address = base_va + lima_res->levels[first_level + i].offset;
111      lima_texture_desc_set_va(desc, i, address);
112   }
113}
114
115static void
116lima_update_tex_desc(struct lima_context *ctx, struct lima_sampler_state *sampler,
117                     struct lima_sampler_view *texture, void *pdesc,
118                     unsigned desc_size)
119{
120   /* unit is 1/16 since lod_bias is in fixed format */
121   int lod_bias_delta = 0;
122   lima_tex_desc *desc = pdesc;
123   unsigned first_level;
124   unsigned last_level;
125   unsigned first_layer;
126   float max_lod;
127
128   memset(desc, 0, desc_size);
129
130   switch (texture->base.target) {
131   case PIPE_TEXTURE_2D:
132   case PIPE_TEXTURE_RECT:
133      desc->texture_type = LIMA_TEXTURE_TYPE_2D;
134      break;
135   case PIPE_TEXTURE_CUBE:
136      desc->texture_type = LIMA_TEXTURE_TYPE_CUBE;
137      break;
138   default:
139      break;
140   }
141
142   if (!sampler->base.normalized_coords)
143      desc->unnorm_coords = 1;
144
145   first_level = texture->base.u.tex.first_level;
146   last_level = texture->base.u.tex.last_level;
147   first_layer = texture->base.u.tex.first_layer;
148   if (last_level - first_level >= LIMA_MAX_MIP_LEVELS)
149      last_level = first_level + LIMA_MAX_MIP_LEVELS - 1;
150
151   desc->min_lod = lima_float_to_fixed8(sampler->base.min_lod);
152   max_lod = MIN2(sampler->base.max_lod, sampler->base.min_lod +
153                                         (last_level - first_level));
154   desc->max_lod = lima_float_to_fixed8(max_lod);
155   desc->lod_bias = lima_float_to_fixed8(sampler->base.lod_bias);
156
157   switch (sampler->base.min_mip_filter) {
158      case PIPE_TEX_MIPFILTER_LINEAR:
159         desc->min_mipfilter_2 = 3;
160         break;
161      case PIPE_TEX_MIPFILTER_NEAREST:
162         desc->min_mipfilter_2 = 0;
163         break;
164      case PIPE_TEX_MIPFILTER_NONE:
165         desc->max_lod = desc->min_lod;
166         break;
167      default:
168         break;
169   }
170
171   switch (sampler->base.mag_img_filter) {
172   case PIPE_TEX_FILTER_LINEAR:
173      desc->mag_img_filter_nearest = 0;
174      break;
175   case PIPE_TEX_FILTER_NEAREST:
176   default:
177      desc->mag_img_filter_nearest = 1;
178      break;
179   }
180
181   switch (sampler->base.min_img_filter) {
182      break;
183   case PIPE_TEX_FILTER_LINEAR:
184      desc->min_img_filter_nearest = 0;
185      break;
186   case PIPE_TEX_FILTER_NEAREST:
187   default:
188      lod_bias_delta = 8;
189      desc->min_img_filter_nearest = 1;
190      break;
191   }
192
193   /* Only clamp, clamp to edge, repeat and mirror repeat are supported */
194   switch (sampler->base.wrap_s) {
195   case PIPE_TEX_WRAP_CLAMP:
196      desc->wrap_s_clamp = 1;
197      break;
198   case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
199   case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
200      desc->wrap_s_clamp_to_edge = 1;
201      break;
202   case PIPE_TEX_WRAP_MIRROR_REPEAT:
203      desc->wrap_s_mirror_repeat = 1;
204      break;
205   case PIPE_TEX_WRAP_REPEAT:
206   default:
207      break;
208   }
209
210   /* Only clamp, clamp to edge, repeat and mirror repeat are supported */
211   switch (sampler->base.wrap_t) {
212   case PIPE_TEX_WRAP_CLAMP:
213      desc->wrap_t_clamp = 1;
214      break;
215   case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
216   case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
217      desc->wrap_t_clamp_to_edge = 1;
218      break;
219   case PIPE_TEX_WRAP_MIRROR_REPEAT:
220      desc->wrap_t_mirror_repeat = 1;
221      break;
222   case PIPE_TEX_WRAP_REPEAT:
223   default:
224      break;
225   }
226
227   if (desc->min_img_filter_nearest && desc->mag_img_filter_nearest &&
228       desc->min_mipfilter_2 == 0 &&
229       (desc->min_lod != desc->max_lod))
230     lod_bias_delta = -1;
231
232   desc->lod_bias += lod_bias_delta;
233
234   lima_texture_desc_set_res(ctx, desc, texture->base.texture,
235                             first_level, last_level, first_layer);
236}
237
238static unsigned
239lima_calc_tex_desc_size(struct lima_sampler_view *texture)
240{
241   unsigned size = offsetof(lima_tex_desc, va);
242   unsigned va_bit_size;
243   unsigned first_level = texture->base.u.tex.first_level;
244   unsigned last_level = texture->base.u.tex.last_level;
245
246   if (last_level - first_level >= LIMA_MAX_MIP_LEVELS)
247      last_level = first_level + LIMA_MAX_MIP_LEVELS - 1;
248
249   va_bit_size = VA_BIT_OFFSET + VA_BIT_SIZE * (last_level - first_level + 1);
250   size += (va_bit_size + 7) >> 3;
251   size = align(size, lima_min_tex_desc_size);
252
253   return size;
254}
255
256void
257lima_update_textures(struct lima_context *ctx)
258{
259   struct lima_job *job = lima_job_get(ctx);
260   struct lima_texture_stateobj *lima_tex = &ctx->tex_stateobj;
261
262   assert (lima_tex->num_samplers <= 16);
263
264   /* Nothing to do - we have no samplers or textures */
265   if (!lima_tex->num_samplers || !lima_tex->num_textures)
266      return;
267
268   /* we always need to add texture bo to job */
269   for (int i = 0; i < lima_tex->num_samplers; i++) {
270      struct lima_sampler_view *texture = lima_sampler_view(lima_tex->textures[i]);
271      struct lima_resource *rsc = lima_resource(texture->base.texture);
272      lima_flush_previous_job_writing_resource(ctx, texture->base.texture);
273      lima_job_add_bo(job, LIMA_PIPE_PP, rsc->bo, LIMA_SUBMIT_BO_READ);
274   }
275
276   /* do not regenerate texture desc if no change */
277   if (!(ctx->dirty & LIMA_CONTEXT_DIRTY_TEXTURES))
278      return;
279
280   unsigned size = lima_tex_list_size;
281   for (int i = 0; i < lima_tex->num_samplers; i++) {
282      struct lima_sampler_view *texture = lima_sampler_view(lima_tex->textures[i]);
283      size += lima_calc_tex_desc_size(texture);
284   }
285
286   uint32_t *descs =
287      lima_ctx_buff_alloc(ctx, lima_ctx_buff_pp_tex_desc, size);
288
289   off_t offset = lima_tex_list_size;
290   for (int i = 0; i < lima_tex->num_samplers; i++) {
291      struct lima_sampler_state *sampler = lima_sampler_state(lima_tex->samplers[i]);
292      struct lima_sampler_view *texture = lima_sampler_view(lima_tex->textures[i]);
293      unsigned desc_size = lima_calc_tex_desc_size(texture);
294
295      descs[i] = lima_ctx_buff_va(ctx, lima_ctx_buff_pp_tex_desc) + offset;
296      lima_update_tex_desc(ctx, sampler, texture, (void *)descs + offset, desc_size);
297      offset += desc_size;
298   }
299
300   lima_dump_command_stream_print(
301      job->dump, descs, size, false, "add textures_desc at va %x\n",
302      lima_ctx_buff_va(ctx, lima_ctx_buff_pp_tex_desc));
303
304   lima_dump_texture_descriptor(
305      job->dump, descs, size,
306      lima_ctx_buff_va(ctx, lima_ctx_buff_pp_tex_desc) + lima_tex_list_size,
307      lima_tex_list_size);
308}
309