pp_run.c revision 5ba15d8d38d98cb7b625fa55e7d818ef9c6629ce 
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*/
41void
42pp_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. */
113void
114pp_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. */
122void
123pp_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. */
132void
133pp_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*/
144void *
145pp_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. */
166void
167pp_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. */
178void
179pp_filter_draw(struct program *p)
180{
181   util_draw_vertex_buffer(p->pipe, p->cso, p->vbuf, 0,
182                           PIPE_PRIM_QUADS, 4, 2);
183   p->pipe->flush(p->pipe, NULL);
184}
185
186/** Set the framebuffer as active. */
187void
188pp_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. */
194void
195pp_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}
200