src/gallium/auxiliary/postprocess/pp_mlaa.c

   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
  57 static float constants[] = { 1, 1, 0, 0 };
  58 static unsigned int dimensions[2] = { 0, 0 };
  59
  60 /** Run function of the MLAA filter. */
  61 static void
  62 pp_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. */
 213 static bool
 214 pp_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    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. */
 293 bool
 294 pp_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. */
 300 bool
 301 pp_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. */
 308 void
 309 pp_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. */
 319 void
 320 pp_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  */
 331 void
 332 pp_jimenezmlaa_free(struct pp_queue_t *ppq, unsigned int n)
 333 {
 334    pipe_resource_reference(&ppq->areamaptex, NULL);
 335 }
 336