src/gallium/auxiliary/postprocess/pp_run.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2011 Lauri Kasanen
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "postprocess.h"
  29
  30 #include "postprocess/pp_filters.h"
  31 #include "util/u_inlines.h"
  32 #include "util/u_sampler.h"
  33
  34 #include "tgsi/tgsi_parse.h"
  35
  36 void
  37 pp_blit(struct pipe_context *pipe,
  38         struct pipe_resource *src_tex,
  39         int srcX0, int srcY0,
  40         int srcX1, int srcY1,
  41         int srcZ0,
  42         struct pipe_surface *dst,
  43         int dstX0, int dstY0,
  44         int dstX1, int dstY1)
  45 {
  46    struct pipe_blit_info blit;
  47
  48    memset(&blit, 0, sizeof(blit));
  49
  50    blit.src.resource = src_tex;
  51    blit.src.level = 0;
  52    blit.src.format = src_tex->format;
  53    blit.src.box.x = srcX0;
  54    blit.src.box.y = srcY0;
  55    blit.src.box.z = srcZ0;
  56    blit.src.box.width = srcX1 - srcX0;
  57    blit.src.box.height = srcY1 - srcY0;
  58    blit.src.box.depth = 1;
  59
  60    blit.dst.resource = dst->texture;
  61    blit.dst.level = dst->u.tex.level;
  62    blit.dst.format = dst->format;
  63    blit.dst.box.x = dstX0;
  64    blit.dst.box.y = dstY0;
  65    blit.dst.box.z = 0;
  66    blit.dst.box.width = dstX1 - dstX0;
  67    blit.dst.box.height = dstY1 - dstY0;
  68    blit.dst.box.depth = 1;
  69
  70    blit.mask = PIPE_MASK_RGBA;
  71
  72    pipe->blit(pipe, &blit);
  73 }
  74
  75 /**
  76 *       Main run function of the PP queue. Called on swapbuffers/flush.
  77 *
  78 *       Runs all requested filters in order and handles shuffling the temp
  79 *       buffers in between.
  80 */
  81 void
  82 pp_run(struct pp_queue_t *ppq, struct pipe_resource *in,
  83        struct pipe_resource *out, struct pipe_resource *indepth)
  84 {
  85    struct pipe_resource *refin = NULL, *refout = NULL;
  86    unsigned int i;
  87    struct cso_context *cso = ppq->p->cso;
  88
  89    if (ppq->n_filters == 0)
  90       return;
  91
  92    assert(ppq->pp_queue);
  93    assert(ppq->tmp[0]);
  94
  95    if (in->width0 != ppq->p->framebuffer.width ||
  96        in->height0 != ppq->p->framebuffer.height) {
  97       pp_debug("Resizing the temp pp buffers\n");
  98       pp_free_fbos(ppq);
  99       pp_init_fbos(ppq, in->width0, in->height0);
 100    }
 101
 102    if (in == out && ppq->n_filters == 1) {
 103       /* Make a copy of in to tmp[0] in this case. */
 104       unsigned int w = ppq->p->framebuffer.width;
 105       unsigned int h = ppq->p->framebuffer.height;
 106
 107
 108       pp_blit(ppq->p->pipe, in, 0, 0,
 109               w, h, 0, ppq->tmps[0],
 110               0, 0, w, h);
 111
 112       in = ppq->tmp[0];
 113    }
 114
 115    /* save state (restored below) */
 116    cso_save_blend(cso);
 117    cso_save_depth_stencil_alpha(cso);
 118    cso_save_fragment_shader(cso);
 119    cso_save_framebuffer(cso);
 120    cso_save_geometry_shader(cso);
 121    cso_save_rasterizer(cso);
 122    cso_save_sample_mask(cso);
 123    cso_save_samplers(cso, PIPE_SHADER_FRAGMENT);
 124    cso_save_sampler_views(cso, PIPE_SHADER_FRAGMENT);
 125    cso_save_stencil_ref(cso);
 126    cso_save_stream_outputs(cso);
 127    cso_save_vertex_elements(cso);
 128    cso_save_vertex_shader(cso);
 129    cso_save_viewport(cso);
 130    cso_save_aux_vertex_buffer_slot(cso);
 131    cso_save_constant_buffer_slot0(cso, PIPE_SHADER_VERTEX);
 132    cso_save_constant_buffer_slot0(cso, PIPE_SHADER_FRAGMENT);
 133    cso_save_render_condition(cso);
 134
 135    /* set default state */
 136    cso_set_sample_mask(cso, ~0);
 137    cso_set_stream_outputs(cso, 0, NULL, 0);
 138    cso_set_geometry_shader_handle(cso, NULL);
 139    cso_set_render_condition(cso, NULL, FALSE, 0);
 140
 141    // Kept only for this frame.
 142    pipe_resource_reference(&ppq->depth, indepth);
 143    pipe_resource_reference(&refin, in);
 144    pipe_resource_reference(&refout, out);
 145
 146    switch (ppq->n_filters) {
 147    case 0:
 148       /* Failsafe, but never reached. */
 149       break;
 150    case 1:                     /* No temp buf */
 151       ppq->pp_queue[0] (ppq, in, out, 0);
 152       break;
 153    case 2:                     /* One temp buf */
 154
 155       ppq->pp_queue[0] (ppq, in, ppq->tmp[0], 0);
 156       ppq->pp_queue[1] (ppq, ppq->tmp[0], out, 1);
 157
 158       break;
 159    default:                    /* Two temp bufs */
 160       assert(ppq->tmp[1]);
 161       ppq->pp_queue[0] (ppq, in, ppq->tmp[0], 0);
 162
 163       for (i = 1; i < (ppq->n_filters - 1); i++) {
 164          if (i % 2 == 0)
 165             ppq->pp_queue[i] (ppq, ppq->tmp[1], ppq->tmp[0], i);
 166
 167          else
 168             ppq->pp_queue[i] (ppq, ppq->tmp[0], ppq->tmp[1], i);
 169       }
 170
 171       if (i % 2 == 0)
 172          ppq->pp_queue[i] (ppq, ppq->tmp[1], out, i);
 173
 174       else
 175          ppq->pp_queue[i] (ppq, ppq->tmp[0], out, i);
 176
 177       break;
 178    }
 179
 180    /* restore state we changed */
 181    cso_restore_blend(cso);
 182    cso_restore_depth_stencil_alpha(cso);
 183    cso_restore_fragment_shader(cso);
 184    cso_restore_framebuffer(cso);
 185    cso_restore_geometry_shader(cso);
 186    cso_restore_rasterizer(cso);
 187    cso_restore_sample_mask(cso);
 188    cso_restore_samplers(cso, PIPE_SHADER_FRAGMENT);
 189    cso_restore_sampler_views(cso, PIPE_SHADER_FRAGMENT);
 190    cso_restore_stencil_ref(cso);
 191    cso_restore_stream_outputs(cso);
 192    cso_restore_vertex_elements(cso);
 193    cso_restore_vertex_shader(cso);
 194    cso_restore_viewport(cso);
 195    cso_restore_aux_vertex_buffer_slot(cso);
 196    cso_restore_constant_buffer_slot0(cso, PIPE_SHADER_VERTEX);
 197    cso_restore_constant_buffer_slot0(cso, PIPE_SHADER_FRAGMENT);
 198    cso_restore_render_condition(cso);
 199
 200    pipe_resource_reference(&ppq->depth, NULL);
 201    pipe_resource_reference(&refin, NULL);
 202    pipe_resource_reference(&refout, NULL);
 203 }
 204
 205
 206 /* Utility functions for the filters. You're not forced to use these if */
 207 /* your filter is more complicated. */
 208
 209 /** Setup this resource as the filter input. */
 210 void
 211 pp_filter_setup_in(struct pp_program *p, struct pipe_resource *in)
 212 {
 213    struct pipe_sampler_view v_tmp;
 214    u_sampler_view_default_template(&v_tmp, in, in->format);
 215    p->view = p->pipe->create_sampler_view(p->pipe, in, &v_tmp);
 216 }
 217
 218 /** Setup this resource as the filter output. */
 219 void
 220 pp_filter_setup_out(struct pp_program *p, struct pipe_resource *out)
 221 {
 222    p->surf.format = out->format;
 223
 224    p->framebuffer.cbufs[0] = p->pipe->create_surface(p->pipe, out, &p->surf);
 225 }
 226
 227 /** Clean up the input and output set with the above. */
 228 void
 229 pp_filter_end_pass(struct pp_program *p)
 230 {
 231    pipe_surface_reference(&p->framebuffer.cbufs[0], NULL);
 232    pipe_sampler_view_reference(&p->view, NULL);
 233 }
 234
 235 /**
 236 *       Convert the TGSI assembly to a runnable shader.
 237 *
 238 * We need not care about geometry shaders. All we have is screen quads.
 239 */
 240 void *
 241 pp_tgsi_to_state(struct pipe_context *pipe, const char *text, bool isvs,
 242                  const char *name)
 243 {
 244    struct pipe_shader_state state;
 245    struct tgsi_token *tokens = NULL;
 246    void *ret_state = NULL;
 247
 248    /*
 249     * Allocate temporary token storage. State creation will duplicate
 250     * tokens so we must free them on exit.
 251     */
 252    tokens = tgsi_alloc_tokens(PP_MAX_TOKENS);
 253
 254    if (tokens == NULL) {
 255       pp_debug("Failed to allocate temporary token storage.\n");
 256       return NULL;
 257    }
 258
 259    if (tgsi_text_translate(text, tokens, PP_MAX_TOKENS) == FALSE) {
 260       _debug_printf("pp: Failed to translate a shader for %s\n", name);
 261       return NULL;
 262    }
 263
 264    state.tokens = tokens;
 265    memset(&state.stream_output, 0, sizeof(state.stream_output));
 266
 267    if (isvs) {
 268       ret_state = pipe->create_vs_state(pipe, &state);
 269       FREE(tokens);
 270    } else {
 271       ret_state = pipe->create_fs_state(pipe, &state);
 272       FREE(tokens);
 273    }
 274
 275    return ret_state;
 276 }
 277
 278 /** Setup misc state for the filter. */
 279 void
 280 pp_filter_misc_state(struct pp_program *p)
 281 {
 282    cso_set_blend(p->cso, &p->blend);
 283    cso_set_depth_stencil_alpha(p->cso, &p->depthstencil);
 284    cso_set_rasterizer(p->cso, &p->rasterizer);
 285    cso_set_viewport(p->cso, &p->viewport);
 286
 287    cso_set_vertex_elements(p->cso, 2, p->velem);
 288 }
 289
 290 /** Draw with the filter to the set output. */
 291 void
 292 pp_filter_draw(struct pp_program *p)
 293 {
 294    util_draw_vertex_buffer(p->pipe, p->cso, p->vbuf, 0, 0,
 295                            PIPE_PRIM_QUADS, 4, 2);
 296 }
 297
 298 /** Set the framebuffer as active. */
 299 void
 300 pp_filter_set_fb(struct pp_program *p)
 301 {
 302    cso_set_framebuffer(p->cso, &p->framebuffer);
 303 }
 304
 305 /** Set the framebuffer as active and clear it. */
 306 void
 307 pp_filter_set_clear_fb(struct pp_program *p)
 308 {
 309    cso_set_framebuffer(p->cso, &p->framebuffer);
 310    p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR, &p->clear_color, 0, 0);
 311 }