1 /*
2 * Copyright (C) 2016 Rob Clark <robclark@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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * 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 NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 * Rob Clark <robclark@freedesktop.org>
25 */
26
27 #include "pipe/p_state.h"
28 #include "util/u_string.h"
29 #include "util/u_memory.h"
30 #include "util/u_inlines.h"
31 #include "util/u_format.h"
32
33 #include "fd5_texture.h"
34 #include "fd5_format.h"
35
36 static enum a5xx_tex_clamp
tex_clamp(unsigned wrap,bool clamp_to_edge,bool * needs_border)37 tex_clamp(unsigned wrap, bool clamp_to_edge, bool *needs_border)
38 {
39 /* Hardware does not support _CLAMP, but we emulate it: */
40 if (wrap == PIPE_TEX_WRAP_CLAMP) {
41 wrap = (clamp_to_edge) ?
42 PIPE_TEX_WRAP_CLAMP_TO_EDGE : PIPE_TEX_WRAP_CLAMP_TO_BORDER;
43 }
44
45 switch (wrap) {
46 case PIPE_TEX_WRAP_REPEAT:
47 return A5XX_TEX_REPEAT;
48 case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
49 return A5XX_TEX_CLAMP_TO_EDGE;
50 case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
51 *needs_border = true;
52 return A5XX_TEX_CLAMP_TO_BORDER;
53 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
54 /* only works for PoT.. need to emulate otherwise! */
55 return A5XX_TEX_MIRROR_CLAMP;
56 case PIPE_TEX_WRAP_MIRROR_REPEAT:
57 return A5XX_TEX_MIRROR_REPEAT;
58 case PIPE_TEX_WRAP_MIRROR_CLAMP:
59 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
60 /* these two we could perhaps emulate, but we currently
61 * just don't advertise PIPE_CAP_TEXTURE_MIRROR_CLAMP
62 */
63 default:
64 DBG("invalid wrap: %u", wrap);
65 return 0;
66 }
67 }
68
69 static enum a5xx_tex_filter
tex_filter(unsigned filter,bool aniso)70 tex_filter(unsigned filter, bool aniso)
71 {
72 switch (filter) {
73 case PIPE_TEX_FILTER_NEAREST:
74 return A5XX_TEX_NEAREST;
75 case PIPE_TEX_FILTER_LINEAR:
76 return aniso ? A5XX_TEX_ANISO : A5XX_TEX_LINEAR;
77 default:
78 DBG("invalid filter: %u", filter);
79 return 0;
80 }
81 }
82
83 static void *
fd5_sampler_state_create(struct pipe_context * pctx,const struct pipe_sampler_state * cso)84 fd5_sampler_state_create(struct pipe_context *pctx,
85 const struct pipe_sampler_state *cso)
86 {
87 struct fd5_sampler_stateobj *so = CALLOC_STRUCT(fd5_sampler_stateobj);
88 unsigned aniso = util_last_bit(MIN2(cso->max_anisotropy >> 1, 8));
89 bool miplinear = false;
90 bool clamp_to_edge;
91
92 if (!so)
93 return NULL;
94
95 so->base = *cso;
96
97 if (cso->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
98 miplinear = true;
99
100 /*
101 * For nearest filtering, _CLAMP means _CLAMP_TO_EDGE; for linear
102 * filtering, _CLAMP means _CLAMP_TO_BORDER while additionally
103 * clamping the texture coordinates to [0.0, 1.0].
104 *
105 * The clamping will be taken care of in the shaders. There are two
106 * filters here, but let the minification one has a say.
107 */
108 clamp_to_edge = (cso->min_img_filter == PIPE_TEX_FILTER_NEAREST);
109 if (!clamp_to_edge) {
110 so->saturate_s = (cso->wrap_s == PIPE_TEX_WRAP_CLAMP);
111 so->saturate_t = (cso->wrap_t == PIPE_TEX_WRAP_CLAMP);
112 so->saturate_r = (cso->wrap_r == PIPE_TEX_WRAP_CLAMP);
113 }
114
115 so->needs_border = false;
116 so->texsamp0 =
117 COND(miplinear, A5XX_TEX_SAMP_0_MIPFILTER_LINEAR_NEAR) |
118 A5XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter, aniso)) |
119 A5XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter, aniso)) |
120 A5XX_TEX_SAMP_0_ANISO(aniso) |
121 A5XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s, clamp_to_edge, &so->needs_border)) |
122 A5XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t, clamp_to_edge, &so->needs_border)) |
123 A5XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r, clamp_to_edge, &so->needs_border));
124
125 so->texsamp1 =
126 COND(!cso->seamless_cube_map, A5XX_TEX_SAMP_1_CUBEMAPSEAMLESSFILTOFF) |
127 COND(!cso->normalized_coords, A5XX_TEX_SAMP_1_UNNORM_COORDS);
128
129 if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
130 so->texsamp0 |= A5XX_TEX_SAMP_0_LOD_BIAS(cso->lod_bias);
131 so->texsamp1 |=
132 A5XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) |
133 A5XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
134 }
135
136 if (cso->compare_mode)
137 so->texsamp1 |= A5XX_TEX_SAMP_1_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */
138
139 return so;
140 }
141
142 static void
fd5_sampler_states_bind(struct pipe_context * pctx,enum pipe_shader_type shader,unsigned start,unsigned nr,void ** hwcso)143 fd5_sampler_states_bind(struct pipe_context *pctx,
144 enum pipe_shader_type shader, unsigned start,
145 unsigned nr, void **hwcso)
146 {
147 struct fd_context *ctx = fd_context(pctx);
148 struct fd5_context *fd5_ctx = fd5_context(ctx);
149 uint16_t saturate_s = 0, saturate_t = 0, saturate_r = 0;
150 unsigned i;
151
152 if (!hwcso)
153 nr = 0;
154
155 for (i = 0; i < nr; i++) {
156 if (hwcso[i]) {
157 struct fd5_sampler_stateobj *sampler =
158 fd5_sampler_stateobj(hwcso[i]);
159 if (sampler->saturate_s)
160 saturate_s |= (1 << i);
161 if (sampler->saturate_t)
162 saturate_t |= (1 << i);
163 if (sampler->saturate_r)
164 saturate_r |= (1 << i);
165 }
166 }
167
168 fd_sampler_states_bind(pctx, shader, start, nr, hwcso);
169
170 if (shader == PIPE_SHADER_FRAGMENT) {
171 fd5_ctx->fsaturate =
172 (saturate_s != 0) ||
173 (saturate_t != 0) ||
174 (saturate_r != 0);
175 fd5_ctx->fsaturate_s = saturate_s;
176 fd5_ctx->fsaturate_t = saturate_t;
177 fd5_ctx->fsaturate_r = saturate_r;
178 } else if (shader == PIPE_SHADER_VERTEX) {
179 fd5_ctx->vsaturate =
180 (saturate_s != 0) ||
181 (saturate_t != 0) ||
182 (saturate_r != 0);
183 fd5_ctx->vsaturate_s = saturate_s;
184 fd5_ctx->vsaturate_t = saturate_t;
185 fd5_ctx->vsaturate_r = saturate_r;
186 }
187 }
188
189 static bool
use_astc_srgb_workaround(struct pipe_context * pctx,enum pipe_format format)190 use_astc_srgb_workaround(struct pipe_context *pctx, enum pipe_format format)
191 {
192 return false; // TODO check if this is still needed on a5xx
193 }
194
195 static struct pipe_sampler_view *
fd5_sampler_view_create(struct pipe_context * pctx,struct pipe_resource * prsc,const struct pipe_sampler_view * cso)196 fd5_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
197 const struct pipe_sampler_view *cso)
198 {
199 struct fd5_pipe_sampler_view *so = CALLOC_STRUCT(fd5_pipe_sampler_view);
200 struct fd_resource *rsc = fd_resource(prsc);
201 enum pipe_format format = cso->format;
202 unsigned lvl, layers;
203
204 if (!so)
205 return NULL;
206
207 if (format == PIPE_FORMAT_X32_S8X24_UINT) {
208 rsc = rsc->stencil;
209 format = rsc->base.format;
210 }
211
212 so->base = *cso;
213 pipe_reference(NULL, &prsc->reference);
214 so->base.texture = prsc;
215 so->base.reference.count = 1;
216 so->base.context = pctx;
217
218 so->texconst0 =
219 A5XX_TEX_CONST_0_FMT(fd5_pipe2tex(format)) |
220 fd5_tex_swiz(format, cso->swizzle_r, cso->swizzle_g,
221 cso->swizzle_b, cso->swizzle_a);
222
223 /* NOTE: since we sample z24s8 using 8888_UINT format, the swizzle
224 * we get isn't quite right. Use SWAP(XYZW) as a cheap and cheerful
225 * way to re-arrange things so stencil component is where the swiz
226 * expects.
227 *
228 * Note that gallium expects stencil sampler to return (s,s,s,s)
229 * which isn't quite true. To make that happen we'd have to massage
230 * the swizzle. But in practice only the .x component is used.
231 */
232 if (format == PIPE_FORMAT_X24S8_UINT) {
233 so->texconst0 |= A5XX_TEX_CONST_0_SWAP(XYZW);
234 }
235
236 if (util_format_is_srgb(format)) {
237 if (use_astc_srgb_workaround(pctx, format))
238 so->astc_srgb = true;
239 so->texconst0 |= A5XX_TEX_CONST_0_SRGB;
240 }
241
242 if (cso->target == PIPE_BUFFER) {
243 unsigned elements = cso->u.buf.size / util_format_get_blocksize(format);
244
245 lvl = 0;
246 so->texconst1 =
247 A5XX_TEX_CONST_1_WIDTH(elements) |
248 A5XX_TEX_CONST_1_HEIGHT(1);
249 so->texconst2 =
250 A5XX_TEX_CONST_2_FETCHSIZE(fd5_pipe2fetchsize(format)) |
251 A5XX_TEX_CONST_2_PITCH(elements * rsc->cpp);
252 so->offset = cso->u.buf.offset;
253 } else {
254 unsigned miplevels;
255
256 lvl = fd_sampler_first_level(cso);
257 miplevels = fd_sampler_last_level(cso) - lvl;
258 layers = cso->u.tex.last_layer - cso->u.tex.first_layer + 1;
259
260 so->texconst0 |= A5XX_TEX_CONST_0_MIPLVLS(miplevels);
261 so->texconst1 =
262 A5XX_TEX_CONST_1_WIDTH(u_minify(prsc->width0, lvl)) |
263 A5XX_TEX_CONST_1_HEIGHT(u_minify(prsc->height0, lvl));
264 so->texconst2 =
265 A5XX_TEX_CONST_2_FETCHSIZE(fd5_pipe2fetchsize(format)) |
266 A5XX_TEX_CONST_2_PITCH(
267 util_format_get_nblocksx(
268 format, rsc->slices[lvl].pitch) * rsc->cpp);
269 so->offset = fd_resource_offset(rsc, lvl, cso->u.tex.first_layer);
270 }
271
272 so->texconst2 |= A5XX_TEX_CONST_2_TYPE(fd5_tex_type(cso->target));
273
274 switch (cso->target) {
275 case PIPE_TEXTURE_RECT:
276 case PIPE_TEXTURE_1D:
277 case PIPE_TEXTURE_2D:
278 so->texconst3 =
279 A5XX_TEX_CONST_3_ARRAY_PITCH(rsc->layer_size);
280 so->texconst5 =
281 A5XX_TEX_CONST_5_DEPTH(1);
282 break;
283 case PIPE_TEXTURE_1D_ARRAY:
284 case PIPE_TEXTURE_2D_ARRAY:
285 so->texconst3 =
286 A5XX_TEX_CONST_3_ARRAY_PITCH(rsc->layer_size);
287 so->texconst5 =
288 A5XX_TEX_CONST_5_DEPTH(layers);
289 break;
290 case PIPE_TEXTURE_CUBE:
291 case PIPE_TEXTURE_CUBE_ARRAY:
292 so->texconst3 =
293 A5XX_TEX_CONST_3_ARRAY_PITCH(rsc->layer_size);
294 so->texconst5 =
295 A5XX_TEX_CONST_5_DEPTH(layers / 6);
296 break;
297 case PIPE_TEXTURE_3D:
298 so->texconst3 =
299 A5XX_TEX_CONST_3_ARRAY_PITCH(rsc->slices[lvl].size0);
300 so->texconst5 =
301 A5XX_TEX_CONST_5_DEPTH(u_minify(prsc->depth0, lvl));
302 break;
303 default:
304 so->texconst3 = 0x00000000;
305 break;
306 }
307
308 return &so->base;
309 }
310
311 static void
fd5_set_sampler_views(struct pipe_context * pctx,enum pipe_shader_type shader,unsigned start,unsigned nr,struct pipe_sampler_view ** views)312 fd5_set_sampler_views(struct pipe_context *pctx, enum pipe_shader_type shader,
313 unsigned start, unsigned nr,
314 struct pipe_sampler_view **views)
315 {
316 struct fd_context *ctx = fd_context(pctx);
317 struct fd5_context *fd5_ctx = fd5_context(ctx);
318 uint16_t astc_srgb = 0;
319 unsigned i;
320
321 for (i = 0; i < nr; i++) {
322 if (views[i]) {
323 struct fd5_pipe_sampler_view *view =
324 fd5_pipe_sampler_view(views[i]);
325 if (view->astc_srgb)
326 astc_srgb |= (1 << i);
327 }
328 }
329
330 fd_set_sampler_views(pctx, shader, start, nr, views);
331
332 if (shader == PIPE_SHADER_FRAGMENT) {
333 fd5_ctx->fastc_srgb = astc_srgb;
334 } else if (shader == PIPE_SHADER_VERTEX) {
335 fd5_ctx->vastc_srgb = astc_srgb;
336 }
337 }
338
339 void
fd5_texture_init(struct pipe_context * pctx)340 fd5_texture_init(struct pipe_context *pctx)
341 {
342 pctx->create_sampler_state = fd5_sampler_state_create;
343 pctx->bind_sampler_states = fd5_sampler_states_bind;
344 pctx->create_sampler_view = fd5_sampler_view_create;
345 pctx->set_sampler_views = fd5_set_sampler_views;
346 }
347