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 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_blit.h"
  32 #include "util/u_inlines.h"
  33 #include "util/u_sampler.h"
  34
  35 /**
  36 *       Main run function of the PP queue. Called on swapbuffers/flush.
  37 *
  38 *       Runs all requested filters in order and handles shuffling the temp
  39 *       buffers in between.
  40 */
  41 void
  42 pp_run(struct pp_queue_t *ppq, struct pipe_resource *in,
  43        struct pipe_resource *out, struct pipe_resource *indepth)
  44 {
  45    struct pipe_resource *refin = NULL, *refout = NULL;
  46    unsigned int i;
  47
  48    if (in->width0 != ppq->p->framebuffer.width ||
  49        in->height0 != ppq->p->framebuffer.height) {
  50       pp_debug("Resizing the temp pp buffers\n");
  51       pp_free_fbos(ppq);
  52       pp_init_fbos(ppq, in->width0, in->height0);
  53    }
  54
  55    if (in == out && ppq->n_filters == 1) {
  56       /* Make a copy of in to tmp[0] in this case. */
  57       unsigned int w = ppq->p->framebuffer.width;
  58       unsigned int h = ppq->p->framebuffer.height;
  59
  60       util_blit_pixels(ppq->p->blitctx, in, 0, 0, 0,
  61                        w, h, 0, ppq->tmps[0],
  62                        0, 0, w, h, 0, PIPE_TEX_MIPFILTER_NEAREST,
  63                        TGSI_WRITEMASK_XYZW, 0);
  64
  65       in = ppq->tmp[0];
  66    }
  67
  68    // Kept only for this frame.
  69    pipe_resource_reference(&ppq->depth, indepth);
  70    pipe_resource_reference(&refin, in);
  71    pipe_resource_reference(&refout, out);
  72
  73    switch (ppq->n_filters) {
  74    case 1:                     /* No temp buf */
  75       ppq->pp_queue[0] (ppq, in, out, 0);
  76       break;
  77    case 2:                     /* One temp buf */
  78
  79       ppq->pp_queue[0] (ppq, in, ppq->tmp[0], 0);
  80       ppq->pp_queue[1] (ppq, ppq->tmp[0], out, 1);
  81
  82       break;
  83    default:                    /* Two temp bufs */
  84       ppq->pp_queue[0] (ppq, in, ppq->tmp[0], 0);
  85
  86       for (i = 1; i < (ppq->n_filters - 1); i++) {
  87          if (i % 2 == 0)
  88             ppq->pp_queue[i] (ppq, ppq->tmp[1], ppq->tmp[0], i);
  89
  90          else
  91             ppq->pp_queue[i] (ppq, ppq->tmp[0], ppq->tmp[1], i);
  92       }
  93
  94       if (i % 2 == 0)
  95          ppq->pp_queue[i] (ppq, ppq->tmp[1], out, i);
  96
  97       else
  98          ppq->pp_queue[i] (ppq, ppq->tmp[0], out, i);
  99
 100       break;
 101    }
 102
 103    pipe_resource_reference(&ppq->depth, NULL);
 104    pipe_resource_reference(&refin, NULL);
 105    pipe_resource_reference(&refout, NULL);
 106 }
 107
 108
 109 /* Utility functions for the filters. You're not forced to use these if */
 110 /* your filter is more complicated. */
 111
 112 /** Setup this resource as the filter input. */
 113 void
 114 pp_filter_setup_in(struct program *p, struct pipe_resource *in)
 115 {
 116    struct pipe_sampler_view v_tmp;
 117    u_sampler_view_default_template(&v_tmp, in, in->format);
 118    p->view = p->pipe->create_sampler_view(p->pipe, in, &v_tmp);
 119 }
 120
 121 /** Setup this resource as the filter output. */
 122 void
 123 pp_filter_setup_out(struct program *p, struct pipe_resource *out)
 124 {
 125    p->surf.format = out->format;
 126    p->surf.usage = PIPE_BIND_RENDER_TARGET;
 127
 128    p->framebuffer.cbufs[0] = p->pipe->create_surface(p->pipe, out, &p->surf);
 129 }
 130
 131 /** Clean up the input and output set with the above. */
 132 void
 133 pp_filter_end_pass(struct program *p)
 134 {
 135    pipe_surface_reference(&p->framebuffer.cbufs[0], NULL);
 136    pipe_sampler_view_reference(&p->view, NULL);
 137 }
 138
 139 /**
 140 *       Convert the TGSI assembly to a runnable shader.
 141 *
 142 * We need not care about geometry shaders. All we have is screen quads.
 143 */
 144 void *
 145 pp_tgsi_to_state(struct pipe_context *pipe, const char *text, bool isvs,
 146                  const char *name)
 147 {
 148    struct pipe_shader_state state;
 149    struct tgsi_token tokens[PP_MAX_TOKENS];
 150
 151    if (tgsi_text_translate(text, tokens, Elements(tokens)) == FALSE) {
 152       pp_debug("Failed to translate %s\n", name);
 153       return NULL;
 154    }
 155
 156    state.tokens = tokens;
 157    memset(&state.stream_output, 0, sizeof(state.stream_output));
 158
 159    if (isvs)
 160       return pipe->create_vs_state(pipe, &state);
 161    else
 162       return pipe->create_fs_state(pipe, &state);
 163 }
 164
 165 /** Setup misc state for the filter. */
 166 void
 167 pp_filter_misc_state(struct program *p)
 168 {
 169    cso_set_blend(p->cso, &p->blend);
 170    cso_set_depth_stencil_alpha(p->cso, &p->depthstencil);
 171    cso_set_rasterizer(p->cso, &p->rasterizer);
 172    cso_set_viewport(p->cso, &p->viewport);
 173
 174    cso_set_vertex_elements(p->cso, 2, p->velem);
 175 }
 176
 177 /** Draw with the filter to the set output. */
 178 void
 179 pp_filter_draw(struct program *p)
 180 {
 181    util_draw_vertex_buffer(p->pipe, p->cso, p->vbuf, 0, 0,
 182                            PIPE_PRIM_QUADS, 4, 2);
 183    p->pipe->flush(p->pipe, NULL);
 184 }
 185
 186 /** Set the framebuffer as active. */
 187 void
 188 pp_filter_set_fb(struct program *p)
 189 {
 190    cso_set_framebuffer(p->cso, &p->framebuffer);
 191 }
 192
 193 /** Set the framebuffer as active and clear it. */
 194 void
 195 pp_filter_set_clear_fb(struct program *p)
 196 {
 197    cso_set_framebuffer(p->cso, &p->framebuffer);
 198    p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR, &p->clear_color, 0, 0);
 199 }