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    struct cso_context *cso = ppq->p->cso;
  48
  49    if (in->width0 != ppq->p->framebuffer.width ||
  50        in->height0 != ppq->p->framebuffer.height) {
  51       pp_debug("Resizing the temp pp buffers\n");
  52       pp_free_fbos(ppq);
  53       pp_init_fbos(ppq, in->width0, in->height0);
  54    }
  55
  56    if (in == out && ppq->n_filters == 1) {
  57       /* Make a copy of in to tmp[0] in this case. */
  58       unsigned int w = ppq->p->framebuffer.width;
  59       unsigned int h = ppq->p->framebuffer.height;
  60
  61       util_blit_pixels(ppq->p->blitctx, in, 0, 0, 0,
  62                        w, h, 0, ppq->tmps[0],
  63                        0, 0, w, h, 0, PIPE_TEX_MIPFILTER_NEAREST,
  64                        TGSI_WRITEMASK_XYZW, 0);
  65
  66       in = ppq->tmp[0];
  67    }
  68
  69    /* save state (restored below) */
  70    cso_save_blend(cso);
  71    cso_save_depth_stencil_alpha(cso);
  72    cso_save_fragment_shader(cso);
  73    cso_save_framebuffer(cso);
  74    cso_save_geometry_shader(cso);
  75    cso_save_rasterizer(cso);
  76    cso_save_sample_mask(cso);
  77    cso_save_samplers(cso, PIPE_SHADER_FRAGMENT);
  78    cso_save_sampler_views(cso, PIPE_SHADER_FRAGMENT);
  79    cso_save_stencil_ref(cso);
  80    cso_save_stream_outputs(cso);
  81    cso_save_vertex_elements(cso);
  82    cso_save_vertex_shader(cso);
  83    cso_save_viewport(cso);
  84    cso_save_aux_vertex_buffer_slot(cso);
  85    cso_save_constant_buffer_slot0(cso, PIPE_SHADER_VERTEX);
  86    cso_save_constant_buffer_slot0(cso, PIPE_SHADER_FRAGMENT);
  87    cso_save_render_condition(cso);
  88
  89    /* set default state */
  90    cso_set_sample_mask(cso, ~0);
  91    cso_set_stream_outputs(cso, 0, NULL, 0);
  92    cso_set_geometry_shader_handle(cso, NULL);
  93    cso_set_render_condition(cso, NULL, 0);
  94
  95    // Kept only for this frame.
  96    pipe_resource_reference(&ppq->depth, indepth);
  97    pipe_resource_reference(&refin, in);
  98    pipe_resource_reference(&refout, out);
  99
 100    switch (ppq->n_filters) {
 101    case 1:                     /* No temp buf */
 102       ppq->pp_queue[0] (ppq, in, out, 0);
 103       break;
 104    case 2:                     /* One temp buf */
 105
 106       ppq->pp_queue[0] (ppq, in, ppq->tmp[0], 0);
 107       ppq->pp_queue[1] (ppq, ppq->tmp[0], out, 1);
 108
 109       break;
 110    default:                    /* Two temp bufs */
 111       ppq->pp_queue[0] (ppq, in, ppq->tmp[0], 0);
 112
 113       for (i = 1; i < (ppq->n_filters - 1); i++) {
 114          if (i % 2 == 0)
 115             ppq->pp_queue[i] (ppq, ppq->tmp[1], ppq->tmp[0], i);
 116
 117          else
 118             ppq->pp_queue[i] (ppq, ppq->tmp[0], ppq->tmp[1], i);
 119       }
 120
 121       if (i % 2 == 0)
 122          ppq->pp_queue[i] (ppq, ppq->tmp[1], out, i);
 123
 124       else
 125          ppq->pp_queue[i] (ppq, ppq->tmp[0], out, i);
 126
 127       break;
 128    }
 129
 130    /* restore state we changed */
 131    cso_restore_blend(cso);
 132    cso_restore_depth_stencil_alpha(cso);
 133    cso_restore_fragment_shader(cso);
 134    cso_restore_framebuffer(cso);
 135    cso_restore_geometry_shader(cso);
 136    cso_restore_rasterizer(cso);
 137    cso_restore_sample_mask(cso);
 138    cso_restore_samplers(cso, PIPE_SHADER_FRAGMENT);
 139    cso_restore_sampler_views(cso, PIPE_SHADER_FRAGMENT);
 140    cso_restore_stencil_ref(cso);
 141    cso_restore_stream_outputs(cso);
 142    cso_restore_vertex_elements(cso);
 143    cso_restore_vertex_shader(cso);
 144    cso_restore_viewport(cso);
 145    cso_restore_aux_vertex_buffer_slot(cso);
 146    cso_restore_constant_buffer_slot0(cso, PIPE_SHADER_VERTEX);
 147    cso_restore_constant_buffer_slot0(cso, PIPE_SHADER_FRAGMENT);
 148    cso_restore_render_condition(cso);
 149
 150    pipe_resource_reference(&ppq->depth, NULL);
 151    pipe_resource_reference(&refin, NULL);
 152    pipe_resource_reference(&refout, NULL);
 153 }
 154
 155
 156 /* Utility functions for the filters. You're not forced to use these if */
 157 /* your filter is more complicated. */
 158
 159 /** Setup this resource as the filter input. */
 160 void
 161 pp_filter_setup_in(struct program *p, struct pipe_resource *in)
 162 {
 163    struct pipe_sampler_view v_tmp;
 164    u_sampler_view_default_template(&v_tmp, in, in->format);
 165    p->view = p->pipe->create_sampler_view(p->pipe, in, &v_tmp);
 166 }
 167
 168 /** Setup this resource as the filter output. */
 169 void
 170 pp_filter_setup_out(struct program *p, struct pipe_resource *out)
 171 {
 172    p->surf.format = out->format;
 173
 174    p->framebuffer.cbufs[0] = p->pipe->create_surface(p->pipe, out, &p->surf);
 175 }
 176
 177 /** Clean up the input and output set with the above. */
 178 void
 179 pp_filter_end_pass(struct program *p)
 180 {
 181    pipe_surface_reference(&p->framebuffer.cbufs[0], NULL);
 182    pipe_sampler_view_reference(&p->view, NULL);
 183 }
 184
 185 /**
 186 *       Convert the TGSI assembly to a runnable shader.
 187 *
 188 * We need not care about geometry shaders. All we have is screen quads.
 189 */
 190 void *
 191 pp_tgsi_to_state(struct pipe_context *pipe, const char *text, bool isvs,
 192                  const char *name)
 193 {
 194    struct pipe_shader_state state;
 195    struct tgsi_token tokens[PP_MAX_TOKENS];
 196
 197    if (tgsi_text_translate(text, tokens, Elements(tokens)) == FALSE) {
 198       pp_debug("Failed to translate %s\n", name);
 199       return NULL;
 200    }
 201
 202    state.tokens = tokens;
 203    memset(&state.stream_output, 0, sizeof(state.stream_output));
 204
 205    if (isvs)
 206       return pipe->create_vs_state(pipe, &state);
 207    else
 208       return pipe->create_fs_state(pipe, &state);
 209 }
 210
 211 /** Setup misc state for the filter. */
 212 void
 213 pp_filter_misc_state(struct program *p)
 214 {
 215    cso_set_blend(p->cso, &p->blend);
 216    cso_set_depth_stencil_alpha(p->cso, &p->depthstencil);
 217    cso_set_rasterizer(p->cso, &p->rasterizer);
 218    cso_set_viewport(p->cso, &p->viewport);
 219
 220    cso_set_vertex_elements(p->cso, 2, p->velem);
 221 }
 222
 223 /** Draw with the filter to the set output. */
 224 void
 225 pp_filter_draw(struct program *p)
 226 {
 227    util_draw_vertex_buffer(p->pipe, p->cso, p->vbuf, 0, 0,
 228                            PIPE_PRIM_QUADS, 4, 2);
 229 }
 230
 231 /** Set the framebuffer as active. */
 232 void
 233 pp_filter_set_fb(struct program *p)
 234 {
 235    cso_set_framebuffer(p->cso, &p->framebuffer);
 236 }
 237
 238 /** Set the framebuffer as active and clear it. */
 239 void
 240 pp_filter_set_clear_fb(struct program *p)
 241 {
 242    cso_set_framebuffer(p->cso, &p->framebuffer);
 243    p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR, &p->clear_color, 0, 0);
 244 }