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
pp_run(struct pp_queue_t * ppq,struct pipe_resource * in,struct pipe_resource * out,struct pipe_resource * indepth)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
pp_filter_setup_in(struct program * p,struct pipe_resource * in)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
pp_filter_setup_out(struct program * p,struct pipe_resource * out)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
pp_filter_end_pass(struct program * p)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 *
pp_tgsi_to_state(struct pipe_context * pipe,const char * text,bool isvs,const char * name)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
pp_filter_misc_state(struct program * p)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
pp_filter_draw(struct program * p)179 pp_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. */
187 void
pp_filter_set_fb(struct program * p)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
pp_filter_set_clear_fb(struct program * p)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 }
200