1/**
2 * Copyright (C) 2010 Jorge Jimenez (jorge@iryoku.com)
3 * Copyright (C) 2010 Belen Masia (bmasia@unizar.es)
4 * Copyright (C) 2010 Jose I. Echevarria (joseignacioechevarria@gmail.com)
5 * Copyright (C) 2010 Fernando Navarro (fernandn@microsoft.com)
6 * Copyright (C) 2010 Diego Gutierrez (diegog@unizar.es)
7 * Copyright (C) 2011 Lauri Kasanen (cand@gmx.com)
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions are met:
12 *
13 *    1. Redistributions of source code must retain the above copyright notice,
14 *       this list of conditions and the following disclaimer.
15 *
16 *    2. Redistributions in binary form must reproduce the following statement:
17 *
18 *       "Uses Jimenez's MLAA. Copyright (C) 2010 by Jorge Jimenez, Belen Masia,
19 *        Jose I. Echevarria, Fernando Navarro and Diego Gutierrez."
20 *
21 *       Only for use in the Mesa project, this point 2 is filled by naming the
22 *       technique Jimenez's MLAA in the Mesa config options.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
25 * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
26 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS OR CONTRIBUTORS
28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 *
36 * The views and conclusions contained in the software and documentation are
37 * those of the authors and should not be interpreted as representing official
38 * policies, either expressed or implied, of the copyright holders.
39 */
40
41#include "pipe/p_compiler.h"
42
43#include "postprocess/postprocess.h"
44#include "postprocess/pp_mlaa.h"
45#include "postprocess/pp_filters.h"
46#include "postprocess/pp_private.h"
47
48#include "util/u_box.h"
49#include "util/u_sampler.h"
50#include "util/u_inlines.h"
51#include "util/u_memory.h"
52#include "util/u_string.h"
53#include "pipe/p_screen.h"
54
55#define IMM_SPACE 80
56
57static float constants[] = { 1, 1, 0, 0 };
58static unsigned int dimensions[2] = { 0, 0 };
59
60/** Run function of the MLAA filter. */
61static void
62pp_jimenezmlaa_run(struct pp_queue_t *ppq, struct pipe_resource *in,
63                   struct pipe_resource *out, unsigned int n, bool iscolor)
64{
65
66   struct pp_program *p = ppq->p;
67
68   struct pipe_depth_stencil_alpha_state mstencil;
69   struct pipe_sampler_view v_tmp, *arr[3];
70
71   unsigned int w = 0;
72   unsigned int h = 0;
73
74   const struct pipe_stencil_ref ref = { {1} };
75
76   /* Insufficient initialization checks. */
77   assert(p);
78   assert(ppq);
79   assert(ppq->areamaptex);
80   assert(ppq->inner_tmp);
81   assert(ppq->shaders[n]);
82
83   w = p->framebuffer.width;
84   h = p->framebuffer.height;
85
86   memset(&mstencil, 0, sizeof(mstencil));
87
88   cso_set_stencil_ref(p->cso, &ref);
89
90   /* Init the pixel size constant */
91   if (dimensions[0] != p->framebuffer.width ||
92       dimensions[1] != p->framebuffer.height) {
93      constants[0] = 1.0f / p->framebuffer.width;
94      constants[1] = 1.0f / p->framebuffer.height;
95
96      dimensions[0] = p->framebuffer.width;
97      dimensions[1] = p->framebuffer.height;
98   }
99
100   cso_set_constant_user_buffer(p->cso, PIPE_SHADER_VERTEX,
101                                0, constants, sizeof(constants));
102   cso_set_constant_user_buffer(p->cso, PIPE_SHADER_FRAGMENT,
103                                0, constants, sizeof(constants));
104
105   mstencil.stencil[0].enabled = 1;
106   mstencil.stencil[0].valuemask = mstencil.stencil[0].writemask = ~0;
107   mstencil.stencil[0].func = PIPE_FUNC_ALWAYS;
108   mstencil.stencil[0].fail_op = PIPE_STENCIL_OP_KEEP;
109   mstencil.stencil[0].zfail_op = PIPE_STENCIL_OP_KEEP;
110   mstencil.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE;
111
112   p->framebuffer.zsbuf = ppq->stencils;
113
114   /* First pass: depth edge detection */
115   if (iscolor)
116      pp_filter_setup_in(p, in);
117   else
118      pp_filter_setup_in(p, ppq->depth);
119
120   pp_filter_setup_out(p, ppq->inner_tmp[0]);
121
122   pp_filter_set_fb(p);
123   pp_filter_misc_state(p);
124   cso_set_depth_stencil_alpha(p->cso, &mstencil);
125   p->pipe->clear(p->pipe, PIPE_CLEAR_STENCIL | PIPE_CLEAR_COLOR0,
126                  &p->clear_color, 0, 0);
127
128   {
129      const struct pipe_sampler_state *samplers[] = {&p->sampler_point};
130      cso_set_samplers(p->cso, PIPE_SHADER_FRAGMENT, 1, samplers);
131   }
132   cso_set_sampler_views(p->cso, PIPE_SHADER_FRAGMENT, 1, &p->view);
133
134   cso_set_vertex_shader_handle(p->cso, ppq->shaders[n][1]);    /* offsetvs */
135   cso_set_fragment_shader_handle(p->cso, ppq->shaders[n][2]);
136
137   pp_filter_draw(p);
138   pp_filter_end_pass(p);
139
140
141   /* Second pass: blend weights */
142   /* Sampler order: areamap, edgesmap, edgesmapL (reversed, thx compiler) */
143   mstencil.stencil[0].func = PIPE_FUNC_EQUAL;
144   mstencil.stencil[0].zpass_op = PIPE_STENCIL_OP_KEEP;
145   cso_set_depth_stencil_alpha(p->cso, &mstencil);
146
147   pp_filter_setup_in(p, ppq->areamaptex);
148   pp_filter_setup_out(p, ppq->inner_tmp[1]);
149
150   u_sampler_view_default_template(&v_tmp, ppq->inner_tmp[0],
151                                   ppq->inner_tmp[0]->format);
152   arr[1] = arr[2] = p->pipe->create_sampler_view(p->pipe,
153                                                  ppq->inner_tmp[0], &v_tmp);
154
155   pp_filter_set_clear_fb(p);
156
157   {
158      const struct pipe_sampler_state *samplers[] =
159         {&p->sampler_point, &p->sampler_point, &p->sampler};
160      cso_set_samplers(p->cso, PIPE_SHADER_FRAGMENT, 3, samplers);
161   }
162
163   arr[0] = p->view;
164   cso_set_sampler_views(p->cso, PIPE_SHADER_FRAGMENT, 3, arr);
165
166   cso_set_vertex_shader_handle(p->cso, ppq->shaders[n][0]);    /* passvs */
167   cso_set_fragment_shader_handle(p->cso, ppq->shaders[n][3]);
168
169   pp_filter_draw(p);
170   pp_filter_end_pass(p);
171   pipe_sampler_view_reference(&arr[1], NULL);
172
173
174   /* Third pass: smoothed edges */
175   /* Sampler order: colormap, blendmap (wtf compiler) */
176   pp_filter_setup_in(p, ppq->inner_tmp[1]);
177   pp_filter_setup_out(p, out);
178
179   pp_filter_set_fb(p);
180
181   /* Blit the input to the output */
182   pp_blit(p->pipe, in, 0, 0,
183           w, h, 0, p->framebuffer.cbufs[0],
184           0, 0, w, h);
185
186   u_sampler_view_default_template(&v_tmp, in, in->format);
187   arr[0] = p->pipe->create_sampler_view(p->pipe, in, &v_tmp);
188
189   {
190      const struct pipe_sampler_state *samplers[] =
191         {&p->sampler_point, &p->sampler_point};
192      cso_set_samplers(p->cso, PIPE_SHADER_FRAGMENT, 2, samplers);
193   }
194
195   arr[1] = p->view;
196   cso_set_sampler_views(p->cso, PIPE_SHADER_FRAGMENT, 2, arr);
197
198   cso_set_vertex_shader_handle(p->cso, ppq->shaders[n][1]);    /* offsetvs */
199   cso_set_fragment_shader_handle(p->cso, ppq->shaders[n][4]);
200
201   p->blend.rt[0].blend_enable = 1;
202   cso_set_blend(p->cso, &p->blend);
203
204   pp_filter_draw(p);
205   pp_filter_end_pass(p);
206   pipe_sampler_view_reference(&arr[0], NULL);
207
208   p->blend.rt[0].blend_enable = 0;
209   p->framebuffer.zsbuf = NULL;
210}
211
212/** The init function of the MLAA filter. */
213static bool
214pp_jimenezmlaa_init_run(struct pp_queue_t *ppq, unsigned int n,
215                        unsigned int val, bool iscolor)
216{
217
218   struct pipe_box box;
219   struct pipe_resource res;
220   char *tmp_text = NULL;
221
222   tmp_text = CALLOC(sizeof(blend2fs_1) + sizeof(blend2fs_2) +
223                     IMM_SPACE, sizeof(char));
224
225   if (!tmp_text) {
226      pp_debug("Failed to allocate shader space\n");
227      return FALSE;
228   }
229
230   pp_debug("mlaa: using %u max search steps\n", val);
231
232   util_sprintf(tmp_text, "%s"
233                "IMM FLT32 {    %.8f,     0.0000,     0.0000,     0.0000}\n"
234                "%s\n", blend2fs_1, (float) val, blend2fs_2);
235
236   memset(&res, 0, sizeof(res));
237
238   res.target = PIPE_TEXTURE_2D;
239   res.format = PIPE_FORMAT_R8G8_UNORM;
240   res.width0 = res.height0 = 165;
241   res.bind = PIPE_BIND_SAMPLER_VIEW;
242   res.usage = PIPE_USAGE_DEFAULT;
243   res.depth0 = res.array_size = res.nr_samples = res.nr_storage_samples = 1;
244
245   if (!ppq->p->screen->is_format_supported(ppq->p->screen, res.format,
246                                            res.target, 1, 1, res.bind))
247      pp_debug("Areamap format not supported\n");
248
249   ppq->areamaptex = ppq->p->screen->resource_create(ppq->p->screen, &res);
250
251   if (ppq->areamaptex == NULL) {
252      pp_debug("Failed to allocate area map texture\n");
253      goto fail;
254   }
255
256   u_box_2d(0, 0, 165, 165, &box);
257
258   ppq->p->pipe->texture_subdata(ppq->p->pipe, ppq->areamaptex, 0,
259                                 PIPE_TRANSFER_WRITE, &box,
260                                 areamap, 165 * 2, sizeof(areamap));
261
262   ppq->shaders[n][1] = pp_tgsi_to_state(ppq->p->pipe, offsetvs, true,
263                                         "offsetvs");
264   if (iscolor)
265      ppq->shaders[n][2] = pp_tgsi_to_state(ppq->p->pipe, color1fs,
266                                            false, "color1fs");
267   else
268      ppq->shaders[n][2] = pp_tgsi_to_state(ppq->p->pipe, depth1fs,
269                                            false, "depth1fs");
270   ppq->shaders[n][3] = pp_tgsi_to_state(ppq->p->pipe, tmp_text, false,
271                                         "blend2fs");
272   ppq->shaders[n][4] = pp_tgsi_to_state(ppq->p->pipe, neigh3fs, false,
273                                         "neigh3fs");
274
275   FREE(tmp_text);
276
277   return TRUE;
278
279 fail:
280
281   FREE(tmp_text);
282
283   /*
284    * Call the common free function for destruction of partially initialized
285    * resources.
286    */
287   pp_jimenezmlaa_free(ppq, n);
288
289   return FALSE;
290}
291
292/** Short wrapper to init the depth version. */
293bool
294pp_jimenezmlaa_init(struct pp_queue_t *ppq, unsigned int n, unsigned int val)
295{
296   return pp_jimenezmlaa_init_run(ppq, n, val, false);
297}
298
299/** Short wrapper to init the color version. */
300bool
301pp_jimenezmlaa_init_color(struct pp_queue_t *ppq, unsigned int n,
302                          unsigned int val)
303{
304   return pp_jimenezmlaa_init_run(ppq, n, val, true);
305}
306
307/** Short wrapper to run the depth version. */
308void
309pp_jimenezmlaa(struct pp_queue_t *ppq, struct pipe_resource *in,
310               struct pipe_resource *out, unsigned int n)
311{
312   if (!ppq->depth) {
313      return;
314   }
315   pp_jimenezmlaa_run(ppq, in, out, n, false);
316}
317
318/** Short wrapper to run the color version. */
319void
320pp_jimenezmlaa_color(struct pp_queue_t *ppq, struct pipe_resource *in,
321                     struct pipe_resource *out, unsigned int n)
322{
323   pp_jimenezmlaa_run(ppq, in, out, n, true);
324}
325
326
327/**
328 * Short wrapper to free the mlaa filter resources. Shaders are freed in
329 * the common code in pp_free.
330 */
331void
332pp_jimenezmlaa_free(struct pp_queue_t *ppq, unsigned int n)
333{
334   pipe_resource_reference(&ppq->areamaptex, NULL);
335}
336
337