1/**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
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 VMWARE 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 <keithw@vmware.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_inlines.h"
39#include "util/u_upload_mgr.h"
40#include "tgsi/tgsi_exec.h"
41#include "sp_buffer.h"
42#include "sp_clear.h"
43#include "sp_context.h"
44#include "sp_flush.h"
45#include "sp_prim_vbuf.h"
46#include "sp_state.h"
47#include "sp_surface.h"
48#include "sp_tile_cache.h"
49#include "sp_tex_tile_cache.h"
50#include "sp_texture.h"
51#include "sp_query.h"
52#include "sp_screen.h"
53#include "sp_tex_sample.h"
54#include "sp_image.h"
55
56static void
57softpipe_destroy( struct pipe_context *pipe )
58{
59   struct softpipe_context *softpipe = softpipe_context( pipe );
60   uint i, sh;
61
62   if (softpipe->blitter) {
63      util_blitter_destroy(softpipe->blitter);
64   }
65
66   if (softpipe->draw)
67      draw_destroy( softpipe->draw );
68
69   if (softpipe->quad.shade)
70      softpipe->quad.shade->destroy( softpipe->quad.shade );
71
72   if (softpipe->quad.depth_test)
73      softpipe->quad.depth_test->destroy( softpipe->quad.depth_test );
74
75   if (softpipe->quad.blend)
76      softpipe->quad.blend->destroy( softpipe->quad.blend );
77
78   if (softpipe->pipe.stream_uploader)
79      u_upload_destroy(softpipe->pipe.stream_uploader);
80
81   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
82      sp_destroy_tile_cache(softpipe->cbuf_cache[i]);
83      pipe_surface_reference(&softpipe->framebuffer.cbufs[i], NULL);
84   }
85
86   sp_destroy_tile_cache(softpipe->zsbuf_cache);
87   pipe_surface_reference(&softpipe->framebuffer.zsbuf, NULL);
88
89   for (sh = 0; sh < ARRAY_SIZE(softpipe->tex_cache); sh++) {
90      for (i = 0; i < ARRAY_SIZE(softpipe->tex_cache[0]); i++) {
91         sp_destroy_tex_tile_cache(softpipe->tex_cache[sh][i]);
92         pipe_sampler_view_reference(&softpipe->sampler_views[sh][i], NULL);
93      }
94   }
95
96   for (sh = 0; sh < ARRAY_SIZE(softpipe->constants); sh++) {
97      for (i = 0; i < ARRAY_SIZE(softpipe->constants[0]); i++) {
98         if (softpipe->constants[sh][i]) {
99            pipe_resource_reference(&softpipe->constants[sh][i], NULL);
100         }
101      }
102   }
103
104   for (i = 0; i < softpipe->num_vertex_buffers; i++) {
105      pipe_vertex_buffer_unreference(&softpipe->vertex_buffer[i]);
106   }
107
108   tgsi_exec_machine_destroy(softpipe->fs_machine);
109
110   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
111      FREE(softpipe->tgsi.sampler[i]);
112      FREE(softpipe->tgsi.image[i]);
113      FREE(softpipe->tgsi.buffer[i]);
114   }
115
116   FREE( softpipe );
117}
118
119
120/**
121 * if (the texture is being used as a framebuffer surface)
122 *    return SP_REFERENCED_FOR_WRITE
123 * else if (the texture is a bound texture source)
124 *    return SP_REFERENCED_FOR_READ
125 * else
126 *    return SP_UNREFERENCED
127 */
128unsigned int
129softpipe_is_resource_referenced( struct pipe_context *pipe,
130                                 struct pipe_resource *texture,
131                                 unsigned level, int layer)
132{
133   struct softpipe_context *softpipe = softpipe_context( pipe );
134   unsigned i, sh;
135
136   if (texture->target == PIPE_BUFFER)
137      return SP_UNREFERENCED;
138
139   /* check if any of the bound drawing surfaces are this texture */
140   if (softpipe->dirty_render_cache) {
141      for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
142         if (softpipe->framebuffer.cbufs[i] &&
143             softpipe->framebuffer.cbufs[i]->texture == texture) {
144            return SP_REFERENCED_FOR_WRITE;
145         }
146      }
147      if (softpipe->framebuffer.zsbuf &&
148          softpipe->framebuffer.zsbuf->texture == texture) {
149         return SP_REFERENCED_FOR_WRITE;
150      }
151   }
152
153   /* check if any of the tex_cache textures are this texture */
154   for (sh = 0; sh < ARRAY_SIZE(softpipe->tex_cache); sh++) {
155      for (i = 0; i < ARRAY_SIZE(softpipe->tex_cache[0]); i++) {
156         if (softpipe->tex_cache[sh][i] &&
157             softpipe->tex_cache[sh][i]->texture == texture)
158            return SP_REFERENCED_FOR_READ;
159      }
160   }
161
162   return SP_UNREFERENCED;
163}
164
165
166
167
168static void
169softpipe_render_condition(struct pipe_context *pipe,
170                          struct pipe_query *query,
171                          bool condition,
172                          enum pipe_render_cond_flag mode)
173{
174   struct softpipe_context *softpipe = softpipe_context( pipe );
175
176   softpipe->render_cond_query = query;
177   softpipe->render_cond_mode = mode;
178   softpipe->render_cond_cond = condition;
179}
180
181
182static void
183softpipe_set_debug_callback(struct pipe_context *pipe,
184                            const struct util_debug_callback *cb)
185{
186   struct softpipe_context *softpipe = softpipe_context(pipe);
187
188   if (cb)
189      softpipe->debug = *cb;
190   else
191      memset(&softpipe->debug, 0, sizeof(softpipe->debug));
192}
193
194
195struct pipe_context *
196softpipe_create_context(struct pipe_screen *screen,
197			void *priv, unsigned flags)
198{
199   struct softpipe_screen *sp_screen = softpipe_screen(screen);
200   struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
201   uint i, sh;
202
203   util_init_math();
204
205   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
206      softpipe->tgsi.sampler[i] = sp_create_tgsi_sampler();
207   }
208
209   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
210      softpipe->tgsi.image[i] = sp_create_tgsi_image();
211   }
212
213   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
214      softpipe->tgsi.buffer[i] = sp_create_tgsi_buffer();
215   }
216
217   softpipe->pipe.screen = screen;
218   softpipe->pipe.destroy = softpipe_destroy;
219   softpipe->pipe.priv = priv;
220
221   /* state setters */
222   softpipe_init_blend_funcs(&softpipe->pipe);
223   softpipe_init_clip_funcs(&softpipe->pipe);
224   softpipe_init_query_funcs( softpipe );
225   softpipe_init_rasterizer_funcs(&softpipe->pipe);
226   softpipe_init_sampler_funcs(&softpipe->pipe);
227   softpipe_init_shader_funcs(&softpipe->pipe);
228   softpipe_init_streamout_funcs(&softpipe->pipe);
229   softpipe_init_texture_funcs( &softpipe->pipe );
230   softpipe_init_vertex_funcs(&softpipe->pipe);
231   softpipe_init_image_funcs(&softpipe->pipe);
232
233   softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
234   softpipe->pipe.set_debug_callback = softpipe_set_debug_callback;
235
236   softpipe->pipe.draw_vbo = softpipe_draw_vbo;
237
238   softpipe->pipe.launch_grid = softpipe_launch_grid;
239
240   softpipe->pipe.clear = softpipe_clear;
241   softpipe->pipe.flush = softpipe_flush_wrapped;
242   softpipe->pipe.texture_barrier = softpipe_texture_barrier;
243   softpipe->pipe.memory_barrier = softpipe_memory_barrier;
244   softpipe->pipe.render_condition = softpipe_render_condition;
245
246   /*
247    * Alloc caches for accessing drawing surfaces and textures.
248    * Must be before quad stage setup!
249    */
250   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
251      softpipe->cbuf_cache[i] = sp_create_tile_cache( &softpipe->pipe );
252   softpipe->zsbuf_cache = sp_create_tile_cache( &softpipe->pipe );
253
254   /* Allocate texture caches */
255   for (sh = 0; sh < ARRAY_SIZE(softpipe->tex_cache); sh++) {
256      for (i = 0; i < ARRAY_SIZE(softpipe->tex_cache[0]); i++) {
257         softpipe->tex_cache[sh][i] = sp_create_tex_tile_cache(&softpipe->pipe);
258         if (!softpipe->tex_cache[sh][i])
259            goto fail;
260      }
261   }
262
263   softpipe->fs_machine = tgsi_exec_machine_create(PIPE_SHADER_FRAGMENT);
264
265   /* setup quad rendering stages */
266   softpipe->quad.shade = sp_quad_shade_stage(softpipe);
267   softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
268   softpipe->quad.blend = sp_quad_blend_stage(softpipe);
269
270   softpipe->pipe.stream_uploader = u_upload_create_default(&softpipe->pipe);
271   if (!softpipe->pipe.stream_uploader)
272      goto fail;
273   softpipe->pipe.const_uploader = softpipe->pipe.stream_uploader;
274
275   /*
276    * Create drawing context and plug our rendering stage into it.
277    */
278   if (sp_screen->use_llvm)
279      softpipe->draw = draw_create(&softpipe->pipe);
280   else
281      softpipe->draw = draw_create_no_llvm(&softpipe->pipe);
282   if (!softpipe->draw)
283      goto fail;
284
285   draw_texture_sampler(softpipe->draw,
286                        PIPE_SHADER_VERTEX,
287                        (struct tgsi_sampler *)
288                           softpipe->tgsi.sampler[PIPE_SHADER_VERTEX]);
289
290   draw_texture_sampler(softpipe->draw,
291                        PIPE_SHADER_GEOMETRY,
292                        (struct tgsi_sampler *)
293                           softpipe->tgsi.sampler[PIPE_SHADER_GEOMETRY]);
294
295   draw_image(softpipe->draw,
296              PIPE_SHADER_VERTEX,
297              (struct tgsi_image *)
298              softpipe->tgsi.image[PIPE_SHADER_VERTEX]);
299
300   draw_image(softpipe->draw,
301              PIPE_SHADER_GEOMETRY,
302              (struct tgsi_image *)
303              softpipe->tgsi.image[PIPE_SHADER_GEOMETRY]);
304
305   draw_buffer(softpipe->draw,
306              PIPE_SHADER_VERTEX,
307              (struct tgsi_buffer *)
308              softpipe->tgsi.buffer[PIPE_SHADER_VERTEX]);
309
310   draw_buffer(softpipe->draw,
311              PIPE_SHADER_GEOMETRY,
312              (struct tgsi_buffer *)
313              softpipe->tgsi.buffer[PIPE_SHADER_GEOMETRY]);
314
315   softpipe->vbuf_backend = sp_create_vbuf_backend(softpipe);
316   if (!softpipe->vbuf_backend)
317      goto fail;
318
319   softpipe->vbuf = draw_vbuf_stage(softpipe->draw, softpipe->vbuf_backend);
320   if (!softpipe->vbuf)
321      goto fail;
322
323   draw_set_rasterize_stage(softpipe->draw, softpipe->vbuf);
324   draw_set_render(softpipe->draw, softpipe->vbuf_backend);
325
326   softpipe->blitter = util_blitter_create(&softpipe->pipe);
327   if (!softpipe->blitter) {
328      goto fail;
329   }
330
331   /* must be done before installing Draw stages */
332   util_blitter_cache_all_shaders(softpipe->blitter);
333
334   /* plug in AA line/point stages */
335   draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
336   draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
337
338   /* Do polygon stipple w/ texture map + frag prog. */
339   draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
340
341   draw_wide_point_sprites(softpipe->draw, TRUE);
342
343   sp_init_surface_functions(softpipe);
344
345   return &softpipe->pipe;
346
347 fail:
348   softpipe_destroy(&softpipe->pipe);
349   return NULL;
350}
351