1/**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 * Copyright 2008 VMware, Inc.  All rights reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29/* Author:
30 *    Keith Whitwell <keith@tungstengraphics.com>
31 */
32
33#include "draw/draw_context.h"
34#include "draw/draw_vbuf.h"
35#include "pipe/p_defines.h"
36#include "util/u_math.h"
37#include "util/u_memory.h"
38#include "util/u_pstipple.h"
39#include "util/u_inlines.h"
40#include "tgsi/tgsi_exec.h"
41#include "vl/vl_decoder.h"
42#include "vl/vl_video_buffer.h"
43#include "sp_clear.h"
44#include "sp_context.h"
45#include "sp_flush.h"
46#include "sp_prim_vbuf.h"
47#include "sp_state.h"
48#include "sp_surface.h"
49#include "sp_tile_cache.h"
50#include "sp_tex_tile_cache.h"
51#include "sp_texture.h"
52#include "sp_query.h"
53#include "sp_screen.h"
54
55
56/**
57 * Map any drawing surfaces which aren't already mapped
58 */
59void
60softpipe_map_transfers(struct softpipe_context *sp)
61{
62   unsigned i;
63
64   for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
65      sp_tile_cache_map_transfers(sp->cbuf_cache[i]);
66   }
67
68   sp_tile_cache_map_transfers(sp->zsbuf_cache);
69}
70
71
72/**
73 * Unmap any mapped drawing surfaces
74 */
75void
76softpipe_unmap_transfers(struct softpipe_context *sp)
77{
78   uint i;
79
80   for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
81      sp_tile_cache_unmap_transfers(sp->cbuf_cache[i]);
82   }
83
84   sp_tile_cache_unmap_transfers(sp->zsbuf_cache);
85}
86
87
88static void
89softpipe_destroy( struct pipe_context *pipe )
90{
91   struct softpipe_context *softpipe = softpipe_context( pipe );
92   uint i, sh;
93
94#if DO_PSTIPPLE_IN_HELPER_MODULE
95   if (softpipe->pstipple.sampler)
96      pipe->delete_sampler_state(pipe, softpipe->pstipple.sampler);
97
98   pipe_resource_reference(&softpipe->pstipple.texture, NULL);
99   pipe_sampler_view_reference(&softpipe->pstipple.sampler_view, NULL);
100#endif
101
102   if (softpipe->draw)
103      draw_destroy( softpipe->draw );
104
105   if (softpipe->quad.shade)
106      softpipe->quad.shade->destroy( softpipe->quad.shade );
107
108   if (softpipe->quad.depth_test)
109      softpipe->quad.depth_test->destroy( softpipe->quad.depth_test );
110
111   if (softpipe->quad.blend)
112      softpipe->quad.blend->destroy( softpipe->quad.blend );
113
114   if (softpipe->quad.pstipple)
115      softpipe->quad.pstipple->destroy( softpipe->quad.pstipple );
116
117   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
118      sp_destroy_tile_cache(softpipe->cbuf_cache[i]);
119      pipe_surface_reference(&softpipe->framebuffer.cbufs[i], NULL);
120   }
121
122   sp_destroy_tile_cache(softpipe->zsbuf_cache);
123   pipe_surface_reference(&softpipe->framebuffer.zsbuf, NULL);
124
125   for (sh = 0; sh < Elements(softpipe->tex_cache); sh++) {
126      for (i = 0; i < Elements(softpipe->tex_cache[0]); i++) {
127         sp_destroy_tex_tile_cache(softpipe->tex_cache[sh][i]);
128         pipe_sampler_view_reference(&softpipe->sampler_views[sh][i], NULL);
129      }
130   }
131
132   for (sh = 0; sh < Elements(softpipe->constants); sh++) {
133      for (i = 0; i < Elements(softpipe->constants[0]); i++) {
134         if (softpipe->constants[sh][i]) {
135            pipe_resource_reference(&softpipe->constants[sh][i], NULL);
136         }
137      }
138   }
139
140   for (i = 0; i < softpipe->num_vertex_buffers; i++) {
141      pipe_resource_reference(&softpipe->vertex_buffer[i].buffer, NULL);
142   }
143
144   tgsi_exec_machine_destroy(softpipe->fs_machine);
145
146   FREE( softpipe );
147}
148
149
150/**
151 * if (the texture is being used as a framebuffer surface)
152 *    return SP_REFERENCED_FOR_WRITE
153 * else if (the texture is a bound texture source)
154 *    return SP_REFERENCED_FOR_READ
155 * else
156 *    return SP_UNREFERENCED
157 */
158unsigned int
159softpipe_is_resource_referenced( struct pipe_context *pipe,
160                                 struct pipe_resource *texture,
161                                 unsigned level, int layer)
162{
163   struct softpipe_context *softpipe = softpipe_context( pipe );
164   unsigned i, sh;
165
166   if (texture->target == PIPE_BUFFER)
167      return SP_UNREFERENCED;
168
169   /* check if any of the bound drawing surfaces are this texture */
170   if (softpipe->dirty_render_cache) {
171      for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
172         if (softpipe->framebuffer.cbufs[i] &&
173             softpipe->framebuffer.cbufs[i]->texture == texture) {
174            return SP_REFERENCED_FOR_WRITE;
175         }
176      }
177      if (softpipe->framebuffer.zsbuf &&
178          softpipe->framebuffer.zsbuf->texture == texture) {
179         return SP_REFERENCED_FOR_WRITE;
180      }
181   }
182
183   /* check if any of the tex_cache textures are this texture */
184   for (sh = 0; sh < Elements(softpipe->tex_cache); sh++) {
185      for (i = 0; i < Elements(softpipe->tex_cache[0]); i++) {
186         if (softpipe->tex_cache[sh][i] &&
187             softpipe->tex_cache[sh][i]->texture == texture)
188            return SP_REFERENCED_FOR_READ;
189      }
190   }
191
192   return SP_UNREFERENCED;
193}
194
195
196
197
198static void
199softpipe_render_condition( struct pipe_context *pipe,
200                           struct pipe_query *query,
201                           uint mode )
202{
203   struct softpipe_context *softpipe = softpipe_context( pipe );
204
205   softpipe->render_cond_query = query;
206   softpipe->render_cond_mode = mode;
207}
208
209
210
211struct pipe_context *
212softpipe_create_context( struct pipe_screen *screen,
213			 void *priv )
214{
215   struct softpipe_screen *sp_screen = softpipe_screen(screen);
216   struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
217   uint i, sh;
218
219   util_init_math();
220
221   softpipe->dump_fs = debug_get_bool_option( "SOFTPIPE_DUMP_FS", FALSE );
222   softpipe->dump_gs = debug_get_bool_option( "SOFTPIPE_DUMP_GS", FALSE );
223
224   softpipe->pipe.screen = screen;
225   softpipe->pipe.destroy = softpipe_destroy;
226   softpipe->pipe.priv = priv;
227
228   /* state setters */
229   softpipe_init_blend_funcs(&softpipe->pipe);
230   softpipe_init_clip_funcs(&softpipe->pipe);
231   softpipe_init_query_funcs( softpipe );
232   softpipe_init_rasterizer_funcs(&softpipe->pipe);
233   softpipe_init_sampler_funcs(&softpipe->pipe);
234   softpipe_init_shader_funcs(&softpipe->pipe);
235   softpipe_init_streamout_funcs(&softpipe->pipe);
236   softpipe_init_texture_funcs( &softpipe->pipe );
237   softpipe_init_vertex_funcs(&softpipe->pipe);
238
239   softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
240
241   softpipe->pipe.draw_vbo = softpipe_draw_vbo;
242
243   softpipe->pipe.clear = softpipe_clear;
244   softpipe->pipe.flush = softpipe_flush_wrapped;
245
246   softpipe->pipe.render_condition = softpipe_render_condition;
247
248   softpipe->pipe.create_video_decoder = vl_create_decoder;
249   softpipe->pipe.create_video_buffer = vl_video_buffer_create;
250
251   /*
252    * Alloc caches for accessing drawing surfaces and textures.
253    * Must be before quad stage setup!
254    */
255   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
256      softpipe->cbuf_cache[i] = sp_create_tile_cache( &softpipe->pipe );
257   softpipe->zsbuf_cache = sp_create_tile_cache( &softpipe->pipe );
258
259   /* Allocate texture caches */
260   for (sh = 0; sh < Elements(softpipe->tex_cache); sh++) {
261      for (i = 0; i < Elements(softpipe->tex_cache[0]); i++) {
262         softpipe->tex_cache[sh][i] = sp_create_tex_tile_cache(&softpipe->pipe);
263         if (!softpipe->tex_cache[sh][i])
264            goto fail;
265      }
266   }
267
268   softpipe->fs_machine = tgsi_exec_machine_create();
269
270   /* setup quad rendering stages */
271   softpipe->quad.shade = sp_quad_shade_stage(softpipe);
272   softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
273   softpipe->quad.blend = sp_quad_blend_stage(softpipe);
274   softpipe->quad.pstipple = sp_quad_polygon_stipple_stage(softpipe);
275
276
277   /*
278    * Create drawing context and plug our rendering stage into it.
279    */
280   if (sp_screen->use_llvm)
281      softpipe->draw = draw_create(&softpipe->pipe);
282   else
283      softpipe->draw = draw_create_no_llvm(&softpipe->pipe);
284   if (!softpipe->draw)
285      goto fail;
286
287   draw_texture_samplers(softpipe->draw,
288                         PIPE_SHADER_VERTEX,
289                         PIPE_MAX_SAMPLERS,
290                         (struct tgsi_sampler **)
291                            softpipe->tgsi.samplers_list[PIPE_SHADER_VERTEX]);
292
293   draw_texture_samplers(softpipe->draw,
294                         PIPE_SHADER_GEOMETRY,
295                         PIPE_MAX_SAMPLERS,
296                         (struct tgsi_sampler **)
297                            softpipe->tgsi.samplers_list[PIPE_SHADER_GEOMETRY]);
298
299   if (debug_get_bool_option( "SOFTPIPE_NO_RAST", FALSE ))
300      softpipe->no_rast = TRUE;
301
302   softpipe->vbuf_backend = sp_create_vbuf_backend(softpipe);
303   if (!softpipe->vbuf_backend)
304      goto fail;
305
306   softpipe->vbuf = draw_vbuf_stage(softpipe->draw, softpipe->vbuf_backend);
307   if (!softpipe->vbuf)
308      goto fail;
309
310   draw_set_rasterize_stage(softpipe->draw, softpipe->vbuf);
311   draw_set_render(softpipe->draw, softpipe->vbuf_backend);
312
313
314   /* plug in AA line/point stages */
315   draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
316   draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
317
318   /* Do polygon stipple w/ texture map + frag prog? */
319#if DO_PSTIPPLE_IN_DRAW_MODULE
320   draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
321#endif
322
323   draw_wide_point_sprites(softpipe->draw, TRUE);
324
325   sp_init_surface_functions(softpipe);
326
327#if DO_PSTIPPLE_IN_HELPER_MODULE
328   /* create the polgon stipple sampler */
329   softpipe->pstipple.sampler = util_pstipple_create_sampler(&softpipe->pipe);
330#endif
331
332   return &softpipe->pipe;
333
334 fail:
335   softpipe_destroy(&softpipe->pipe);
336   return NULL;
337}
338