1 /*
2 * Copyright (C) 2013 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/format/u_format.h"
32
33 #include "fd3_texture.h"
34 #include "fd3_format.h"
35
36 static enum a3xx_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 A3XX_TEX_REPEAT;
48 case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
49 return A3XX_TEX_CLAMP_TO_EDGE;
50 case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
51 *needs_border = true;
52 return A3XX_TEX_CLAMP_TO_BORDER;
53 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
54 /* only works for PoT.. need to emulate otherwise! */
55 return A3XX_TEX_MIRROR_CLAMP;
56 case PIPE_TEX_WRAP_MIRROR_REPEAT:
57 return A3XX_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 a3xx_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 A3XX_TEX_NEAREST;
75 case PIPE_TEX_FILTER_LINEAR:
76 return aniso ? A3XX_TEX_ANISO : A3XX_TEX_LINEAR;
77 default:
78 DBG("invalid filter: %u", filter);
79 return 0;
80 }
81 }
82
83 static void *
fd3_sampler_state_create(struct pipe_context * pctx,const struct pipe_sampler_state * cso)84 fd3_sampler_state_create(struct pipe_context *pctx,
85 const struct pipe_sampler_state *cso)
86 {
87 struct fd3_sampler_stateobj *so = CALLOC_STRUCT(fd3_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 if (cso->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
96 miplinear = true;
97
98 so->base = *cso;
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(!cso->normalized_coords, A3XX_TEX_SAMP_0_UNNORM_COORDS) |
118 COND(!cso->seamless_cube_map, A3XX_TEX_SAMP_0_CUBEMAPSEAMLESSFILTOFF) |
119 COND(miplinear, A3XX_TEX_SAMP_0_MIPFILTER_LINEAR) |
120 A3XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter, aniso)) |
121 A3XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter, aniso)) |
122 A3XX_TEX_SAMP_0_ANISO(aniso) |
123 A3XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s, clamp_to_edge, &so->needs_border)) |
124 A3XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t, clamp_to_edge, &so->needs_border)) |
125 A3XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r, clamp_to_edge, &so->needs_border));
126
127 if (cso->compare_mode)
128 so->texsamp0 |= A3XX_TEX_SAMP_0_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */
129
130 so->texsamp1 = A3XX_TEX_SAMP_1_LOD_BIAS(cso->lod_bias);
131
132 if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
133 so->texsamp1 |=
134 A3XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) |
135 A3XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
136 } else {
137 /* If we're not doing mipmap filtering, we still need a slightly > 0
138 * LOD clamp so the HW can decide between min and mag filtering of
139 * level 0.
140 */
141 so->texsamp1 |=
142 A3XX_TEX_SAMP_1_MIN_LOD(MIN2(cso->min_lod, 0.125)) |
143 A3XX_TEX_SAMP_1_MAX_LOD(MIN2(cso->max_lod, 0.125));
144 }
145
146 return so;
147 }
148
149 static void
fd3_sampler_states_bind(struct pipe_context * pctx,enum pipe_shader_type shader,unsigned start,unsigned nr,void ** hwcso)150 fd3_sampler_states_bind(struct pipe_context *pctx,
151 enum pipe_shader_type shader, unsigned start,
152 unsigned nr, void **hwcso)
153 {
154 struct fd_context *ctx = fd_context(pctx);
155 struct fd3_context *fd3_ctx = fd3_context(ctx);
156 uint16_t saturate_s = 0, saturate_t = 0, saturate_r = 0;
157 unsigned i;
158
159 if (!hwcso)
160 nr = 0;
161
162 for (i = 0; i < nr; i++) {
163 if (hwcso[i]) {
164 struct fd3_sampler_stateobj *sampler =
165 fd3_sampler_stateobj(hwcso[i]);
166 if (sampler->saturate_s)
167 saturate_s |= (1 << i);
168 if (sampler->saturate_t)
169 saturate_t |= (1 << i);
170 if (sampler->saturate_r)
171 saturate_r |= (1 << i);
172 }
173 }
174
175 fd_sampler_states_bind(pctx, shader, start, nr, hwcso);
176
177 if (shader == PIPE_SHADER_FRAGMENT) {
178 fd3_ctx->fsaturate =
179 (saturate_s != 0) ||
180 (saturate_t != 0) ||
181 (saturate_r != 0);
182 fd3_ctx->fsaturate_s = saturate_s;
183 fd3_ctx->fsaturate_t = saturate_t;
184 fd3_ctx->fsaturate_r = saturate_r;
185 } else if (shader == PIPE_SHADER_VERTEX) {
186 fd3_ctx->vsaturate =
187 (saturate_s != 0) ||
188 (saturate_t != 0) ||
189 (saturate_r != 0);
190 fd3_ctx->vsaturate_s = saturate_s;
191 fd3_ctx->vsaturate_t = saturate_t;
192 fd3_ctx->vsaturate_r = saturate_r;
193 }
194 }
195
196 static enum a3xx_tex_type
tex_type(unsigned target)197 tex_type(unsigned target)
198 {
199 switch (target) {
200 default:
201 assert(0);
202 case PIPE_BUFFER:
203 case PIPE_TEXTURE_1D:
204 case PIPE_TEXTURE_1D_ARRAY:
205 return A3XX_TEX_1D;
206 case PIPE_TEXTURE_RECT:
207 case PIPE_TEXTURE_2D:
208 case PIPE_TEXTURE_2D_ARRAY:
209 return A3XX_TEX_2D;
210 case PIPE_TEXTURE_3D:
211 return A3XX_TEX_3D;
212 case PIPE_TEXTURE_CUBE:
213 case PIPE_TEXTURE_CUBE_ARRAY:
214 return A3XX_TEX_CUBE;
215 }
216 }
217
218 static struct pipe_sampler_view *
fd3_sampler_view_create(struct pipe_context * pctx,struct pipe_resource * prsc,const struct pipe_sampler_view * cso)219 fd3_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
220 const struct pipe_sampler_view *cso)
221 {
222 struct fd3_pipe_sampler_view *so = CALLOC_STRUCT(fd3_pipe_sampler_view);
223 struct fd_resource *rsc = fd_resource(prsc);
224 unsigned lvl;
225
226 if (!so)
227 return NULL;
228
229 so->base = *cso;
230 pipe_reference(NULL, &prsc->reference);
231 so->base.texture = prsc;
232 so->base.reference.count = 1;
233 so->base.context = pctx;
234
235 so->texconst0 =
236 A3XX_TEX_CONST_0_TILE_MODE(rsc->layout.tile_mode) |
237 A3XX_TEX_CONST_0_TYPE(tex_type(prsc->target)) |
238 A3XX_TEX_CONST_0_FMT(fd3_pipe2tex(cso->format)) |
239 fd3_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
240 cso->swizzle_b, cso->swizzle_a);
241
242 if (prsc->target == PIPE_BUFFER || util_format_is_pure_integer(cso->format))
243 so->texconst0 |= A3XX_TEX_CONST_0_NOCONVERT;
244 if (util_format_is_srgb(cso->format))
245 so->texconst0 |= A3XX_TEX_CONST_0_SRGB;
246
247 if (prsc->target == PIPE_BUFFER) {
248 lvl = 0;
249 so->texconst1 =
250 A3XX_TEX_CONST_1_WIDTH(cso->u.buf.size / util_format_get_blocksize(cso->format)) |
251 A3XX_TEX_CONST_1_HEIGHT(1);
252 } else {
253 unsigned miplevels;
254
255 lvl = fd_sampler_first_level(cso);
256 miplevels = fd_sampler_last_level(cso) - lvl;
257
258 so->texconst0 |= A3XX_TEX_CONST_0_MIPLVLS(miplevels);
259 so->texconst1 =
260 A3XX_TEX_CONST_1_PITCHALIGN(rsc->layout.pitchalign - 4) |
261 A3XX_TEX_CONST_1_WIDTH(u_minify(prsc->width0, lvl)) |
262 A3XX_TEX_CONST_1_HEIGHT(u_minify(prsc->height0, lvl));
263 }
264 /* when emitted, A3XX_TEX_CONST_2_INDX() must be OR'd in: */
265 struct fdl_slice *slice = fd_resource_slice(rsc, lvl);
266 so->texconst2 =
267 A3XX_TEX_CONST_2_PITCH(fd_resource_pitch(rsc, lvl));
268 switch (prsc->target) {
269 case PIPE_TEXTURE_1D_ARRAY:
270 case PIPE_TEXTURE_2D_ARRAY:
271 so->texconst3 =
272 A3XX_TEX_CONST_3_DEPTH(prsc->array_size - 1) |
273 A3XX_TEX_CONST_3_LAYERSZ1(slice->size0);
274 break;
275 case PIPE_TEXTURE_3D:
276 so->texconst3 =
277 A3XX_TEX_CONST_3_DEPTH(u_minify(prsc->depth0, lvl)) |
278 A3XX_TEX_CONST_3_LAYERSZ1(slice->size0);
279 so->texconst3 |= A3XX_TEX_CONST_3_LAYERSZ2(
280 fd_resource_slice(rsc, prsc->last_level)->size0);
281 break;
282 default:
283 so->texconst3 = 0x00000000;
284 break;
285 }
286
287 return &so->base;
288 }
289
290 void
fd3_texture_init(struct pipe_context * pctx)291 fd3_texture_init(struct pipe_context *pctx)
292 {
293 pctx->create_sampler_state = fd3_sampler_state_create;
294 pctx->bind_sampler_states = fd3_sampler_states_bind;
295 pctx->create_sampler_view = fd3_sampler_view_create;
296 pctx->set_sampler_views = fd_set_sampler_views;
297 }
298