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 "util/u_blit.h"
47#include "util/u_box.h"
48#include "util/u_sampler.h"
49#include "util/u_inlines.h"
50#include "util/u_memory.h"
51#include "util/u_string.h"
52#include "pipe/p_screen.h"
53
54#define IMM_SPACE 80
55
56static float constants[] = { 1, 1, 0, 0 };
57static unsigned int dimensions[2] = { 0, 0 };
58
59static struct pipe_resource *constbuf, *areamaptex;
60
61/** Upload the constants. */
62static void
63up_consts(struct pipe_context *pipe)
64{
65   struct pipe_box box;
66
67   u_box_2d(0, 0, sizeof(constants), 1, &box);
68   pipe->transfer_inline_write(pipe, constbuf, 0, PIPE_TRANSFER_WRITE,
69                               &box, constants, sizeof(constants),
70                               sizeof(constants));
71}
72
73/** Run function of the MLAA filter. */
74static void
75pp_jimenezmlaa_run(struct pp_queue_t *ppq, struct pipe_resource *in,
76                   struct pipe_resource *out, unsigned int n, bool iscolor)
77{
78
79   struct program *p = ppq->p;
80
81   struct pipe_depth_stencil_alpha_state mstencil;
82   struct pipe_sampler_view v_tmp, *arr[3];
83
84   unsigned int w = p->framebuffer.width;
85   unsigned int h = p->framebuffer.height;
86
87   const struct pipe_stencil_ref ref = { {1} };
88   memset(&mstencil, 0, sizeof(mstencil));
89   cso_set_stencil_ref(p->cso, &ref);
90
91   /* Init the pixel size constant */
92   if (dimensions[0] != p->framebuffer.width ||
93       dimensions[1] != p->framebuffer.height) {
94      constants[0] = 1.0 / p->framebuffer.width;
95      constants[1] = 1.0 / p->framebuffer.height;
96
97      up_consts(p->pipe);
98      dimensions[0] = p->framebuffer.width;
99      dimensions[1] = p->framebuffer.height;
100   }
101
102   pipe_set_constant_buffer(p->pipe, PIPE_SHADER_VERTEX, 0, constbuf);
103   pipe_set_constant_buffer(p->pipe, PIPE_SHADER_FRAGMENT, 0, constbuf);
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_COLOR,
126                  &p->clear_color, 0, 0);
127
128   cso_single_sampler(p->cso, PIPE_SHADER_FRAGMENT, 0, &p->sampler_point);
129   cso_single_sampler_done(p->cso, PIPE_SHADER_FRAGMENT);
130   cso_set_sampler_views(p->cso, PIPE_SHADER_FRAGMENT, 1, &p->view);
131
132   cso_set_vertex_shader_handle(p->cso, ppq->shaders[n][1]);    /* offsetvs */
133   cso_set_fragment_shader_handle(p->cso, ppq->shaders[n][2]);
134
135   pp_filter_draw(p);
136   pp_filter_end_pass(p);
137
138
139   /* Second pass: blend weights */
140   /* Sampler order: areamap, edgesmap, edgesmapL (reversed, thx compiler) */
141   mstencil.stencil[0].func = PIPE_FUNC_EQUAL;
142   mstencil.stencil[0].zpass_op = PIPE_STENCIL_OP_KEEP;
143   cso_set_depth_stencil_alpha(p->cso, &mstencil);
144
145   pp_filter_setup_in(p, areamaptex);
146   pp_filter_setup_out(p, ppq->inner_tmp[1]);
147
148   u_sampler_view_default_template(&v_tmp, ppq->inner_tmp[0],
149                                   ppq->inner_tmp[0]->format);
150   arr[1] = arr[2] = p->pipe->create_sampler_view(p->pipe,
151                                                  ppq->inner_tmp[0], &v_tmp);
152
153   pp_filter_set_clear_fb(p);
154
155   cso_single_sampler(p->cso, PIPE_SHADER_FRAGMENT, 0, &p->sampler_point);
156   cso_single_sampler(p->cso, PIPE_SHADER_FRAGMENT, 1, &p->sampler_point);
157   cso_single_sampler(p->cso, PIPE_SHADER_FRAGMENT, 2, &p->sampler);
158   cso_single_sampler_done(p->cso, PIPE_SHADER_FRAGMENT);
159
160   arr[0] = p->view;
161   cso_set_sampler_views(p->cso, PIPE_SHADER_FRAGMENT, 3, arr);
162
163   cso_set_vertex_shader_handle(p->cso, ppq->shaders[n][0]);    /* passvs */
164   cso_set_fragment_shader_handle(p->cso, ppq->shaders[n][3]);
165
166   pp_filter_draw(p);
167   pp_filter_end_pass(p);
168   pipe_sampler_view_reference(&arr[1], NULL);
169
170
171   /* Third pass: smoothed edges */
172   /* Sampler order: colormap, blendmap (wtf compiler) */
173   pp_filter_setup_in(p, ppq->inner_tmp[1]);
174   pp_filter_setup_out(p, out);
175
176   pp_filter_set_fb(p);
177
178   /* Blit the input to the output */
179   util_blit_pixels(p->blitctx, in, 0, 0, 0,
180                    w, h, 0, p->framebuffer.cbufs[0],
181                    0, 0, w, h, 0, PIPE_TEX_MIPFILTER_NEAREST,
182                    TGSI_WRITEMASK_XYZW, 0);
183
184   u_sampler_view_default_template(&v_tmp, in, in->format);
185   arr[0] = p->pipe->create_sampler_view(p->pipe, in, &v_tmp);
186
187   cso_single_sampler(p->cso, PIPE_SHADER_FRAGMENT, 0, &p->sampler_point);
188   cso_single_sampler(p->cso, PIPE_SHADER_FRAGMENT, 1, &p->sampler_point);
189   cso_single_sampler_done(p->cso, PIPE_SHADER_FRAGMENT);
190
191   arr[1] = p->view;
192   cso_set_sampler_views(p->cso, PIPE_SHADER_FRAGMENT, 2, arr);
193
194   cso_set_vertex_shader_handle(p->cso, ppq->shaders[n][1]);    /* offsetvs */
195   cso_set_fragment_shader_handle(p->cso, ppq->shaders[n][4]);
196
197   p->blend.rt[0].blend_enable = 1;
198   cso_set_blend(p->cso, &p->blend);
199
200   pp_filter_draw(p);
201   pp_filter_end_pass(p);
202   pipe_sampler_view_reference(&arr[0], NULL);
203
204   p->blend.rt[0].blend_enable = 0;
205   p->framebuffer.zsbuf = NULL;
206}
207
208/** The init function of the MLAA filter. */
209static void
210pp_jimenezmlaa_init_run(struct pp_queue_t *ppq, unsigned int n,
211                        unsigned int val, bool iscolor)
212{
213
214   struct pipe_box box;
215   struct pipe_resource res;
216   char *tmp_text;
217
218   constbuf = pipe_buffer_create(ppq->p->screen, PIPE_BIND_CONSTANT_BUFFER,
219                                 PIPE_USAGE_STATIC, sizeof(constants));
220   if (!constbuf) {
221      pp_debug("Failed to allocate constant buffer\n");
222      return;
223   }
224
225
226   pp_debug("mlaa: using %u max search steps\n", val);
227
228   tmp_text = CALLOC(sizeof(blend2fs_1) + sizeof(blend2fs_2) +
229                     IMM_SPACE, sizeof(char));
230
231   if (!tmp_text) {
232      pp_debug("Failed to allocate shader space\n");
233      return;
234   }
235   util_sprintf(tmp_text, "%s"
236                "IMM FLT32 {    %.8f,     0.0000,     0.0000,     0.0000}\n"
237                "%s\n", blend2fs_1, (float) val, blend2fs_2);
238
239   memset(&res, 0, sizeof(res));
240
241   res.target = PIPE_TEXTURE_2D;
242   res.format = PIPE_FORMAT_R8G8_UNORM;
243   res.width0 = res.height0 = 165;
244   res.bind = PIPE_BIND_SAMPLER_VIEW;
245   res.usage = PIPE_USAGE_STATIC;
246   res.depth0 = res.array_size = res.nr_samples = 1;
247
248   if (!ppq->p->screen->is_format_supported(ppq->p->screen, res.format,
249                                            res.target, 1, res.bind))
250      pp_debug("Areamap format not supported\n");
251
252   areamaptex = ppq->p->screen->resource_create(ppq->p->screen, &res);
253   u_box_2d(0, 0, 165, 165, &box);
254
255   ppq->p->pipe->transfer_inline_write(ppq->p->pipe, areamaptex, 0,
256                                       PIPE_TRANSFER_WRITE, &box,
257                                       areamap, 165 * 2, sizeof(areamap));
258
259
260
261   ppq->shaders[n][1] = pp_tgsi_to_state(ppq->p->pipe, offsetvs, true,
262                                         "offsetvs");
263   if (iscolor)
264      ppq->shaders[n][2] = pp_tgsi_to_state(ppq->p->pipe, color1fs,
265                                            false, "color1fs");
266   else
267      ppq->shaders[n][2] = pp_tgsi_to_state(ppq->p->pipe, depth1fs,
268                                            false, "depth1fs");
269   ppq->shaders[n][3] = pp_tgsi_to_state(ppq->p->pipe, tmp_text, false,
270                                         "blend2fs");
271   ppq->shaders[n][4] = pp_tgsi_to_state(ppq->p->pipe, neigh3fs, false,
272                                         "neigh3fs");
273
274   FREE(tmp_text);
275}
276
277/** Short wrapper to init the depth version. */
278void
279pp_jimenezmlaa_init(struct pp_queue_t *ppq, unsigned int n, unsigned int val)
280{
281
282   pp_jimenezmlaa_init_run(ppq, n, val, false);
283}
284
285/** Short wrapper to init the color version. */
286void
287pp_jimenezmlaa_init_color(struct pp_queue_t *ppq, unsigned int n,
288                          unsigned int val)
289{
290
291   pp_jimenezmlaa_init_run(ppq, n, val, true);
292}
293
294/** Short wrapper to run the depth version. */
295void
296pp_jimenezmlaa(struct pp_queue_t *ppq, struct pipe_resource *in,
297               struct pipe_resource *out, unsigned int n)
298{
299   pp_jimenezmlaa_run(ppq, in, out, n, false);
300}
301
302/** Short wrapper to run the color version. */
303void
304pp_jimenezmlaa_color(struct pp_queue_t *ppq, struct pipe_resource *in,
305                     struct pipe_resource *out, unsigned int n)
306{
307   pp_jimenezmlaa_run(ppq, in, out, n, true);
308}
309