lp_context.c revision 7ec681f3 
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_inlines.h"
37#include "util/u_math.h"
38#include "util/u_memory.h"
39#include "util/simple_list.h"
40#include "util/u_upload_mgr.h"
41#include "lp_clear.h"
42#include "lp_context.h"
43#include "lp_flush.h"
44#include "lp_perf.h"
45#include "lp_state.h"
46#include "lp_surface.h"
47#include "lp_query.h"
48#include "lp_setup.h"
49#include "lp_screen.h"
50
51/* This is only safe if there's just one concurrent context */
52#ifdef EMBEDDED_DEVICE
53#define USE_GLOBAL_LLVM_CONTEXT
54#endif
55
56static void llvmpipe_destroy( struct pipe_context *pipe )
57{
58   struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
59   uint i;
60
61   lp_print_counters();
62
63   if (llvmpipe->csctx) {
64      lp_csctx_destroy(llvmpipe->csctx);
65   }
66   if (llvmpipe->blitter) {
67      util_blitter_destroy(llvmpipe->blitter);
68   }
69
70   if (llvmpipe->pipe.stream_uploader)
71      u_upload_destroy(llvmpipe->pipe.stream_uploader);
72
73   /* This will also destroy llvmpipe->setup:
74    */
75   if (llvmpipe->draw)
76      draw_destroy( llvmpipe->draw );
77
78   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
79      pipe_surface_reference(&llvmpipe->framebuffer.cbufs[i], NULL);
80   }
81
82   pipe_surface_reference(&llvmpipe->framebuffer.zsbuf, NULL);
83
84   for (enum pipe_shader_type s = PIPE_SHADER_VERTEX; s < PIPE_SHADER_TYPES; s++) {
85      for (i = 0; i < ARRAY_SIZE(llvmpipe->sampler_views[0]); i++) {
86         pipe_sampler_view_reference(&llvmpipe->sampler_views[s][i], NULL);
87      }
88      for (i = 0; i < LP_MAX_TGSI_SHADER_IMAGES; i++) {
89         pipe_resource_reference(&llvmpipe->images[s][i].resource, NULL);
90      }
91      for (i = 0; i < LP_MAX_TGSI_SHADER_BUFFERS; i++) {
92         pipe_resource_reference(&llvmpipe->ssbos[s][i].buffer, NULL);
93      }
94      for (i = 0; i < ARRAY_SIZE(llvmpipe->constants[s]); i++) {
95         pipe_resource_reference(&llvmpipe->constants[s][i].buffer, NULL);
96      }
97   }
98
99   for (i = 0; i < llvmpipe->num_vertex_buffers; i++) {
100      pipe_vertex_buffer_unreference(&llvmpipe->vertex_buffer[i]);
101   }
102
103   lp_delete_setup_variants(llvmpipe);
104
105#ifndef USE_GLOBAL_LLVM_CONTEXT
106   LLVMContextDispose(llvmpipe->context);
107#endif
108   llvmpipe->context = NULL;
109
110   align_free( llvmpipe );
111}
112
113static void
114do_flush( struct pipe_context *pipe,
115          struct pipe_fence_handle **fence,
116          unsigned flags)
117{
118   llvmpipe_flush(pipe, fence, __FUNCTION__);
119}
120
121
122static void
123llvmpipe_render_condition(struct pipe_context *pipe,
124                          struct pipe_query *query,
125                          bool condition,
126                          enum pipe_render_cond_flag mode)
127{
128   struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
129
130   llvmpipe->render_cond_query = query;
131   llvmpipe->render_cond_mode = mode;
132   llvmpipe->render_cond_cond = condition;
133}
134
135static void
136llvmpipe_render_condition_mem(struct pipe_context *pipe,
137                              struct pipe_resource *buffer,
138                              unsigned offset,
139                              bool condition)
140{
141   struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
142
143   llvmpipe->render_cond_buffer = llvmpipe_resource(buffer);
144   llvmpipe->render_cond_offset = offset;
145   llvmpipe->render_cond_cond = condition;
146}
147
148static void
149llvmpipe_texture_barrier(struct pipe_context *pipe, unsigned flags)
150{
151   llvmpipe_flush(pipe, NULL, __FUNCTION__);
152}
153
154static void lp_draw_disk_cache_find_shader(void *cookie,
155                                           struct lp_cached_code *cache,
156                                           unsigned char ir_sha1_cache_key[20])
157{
158   struct llvmpipe_screen *screen = cookie;
159   lp_disk_cache_find_shader(screen, cache, ir_sha1_cache_key);
160}
161
162static void lp_draw_disk_cache_insert_shader(void *cookie,
163                                             struct lp_cached_code *cache,
164                                             unsigned char ir_sha1_cache_key[20])
165{
166   struct llvmpipe_screen *screen = cookie;
167   lp_disk_cache_insert_shader(screen, cache, ir_sha1_cache_key);
168}
169
170static enum pipe_reset_status
171llvmpipe_get_device_reset_status(struct pipe_context *pipe)
172{
173   return PIPE_NO_RESET;
174}
175
176struct pipe_context *
177llvmpipe_create_context(struct pipe_screen *screen, void *priv,
178                        unsigned flags)
179{
180   struct llvmpipe_context *llvmpipe;
181
182   if (!llvmpipe_screen_late_init(llvmpipe_screen(screen)))
183      return NULL;
184
185   llvmpipe = align_malloc(sizeof(struct llvmpipe_context), 16);
186   if (!llvmpipe)
187      return NULL;
188
189   memset(llvmpipe, 0, sizeof *llvmpipe);
190
191   make_empty_list(&llvmpipe->fs_variants_list);
192
193   make_empty_list(&llvmpipe->setup_variants_list);
194
195   make_empty_list(&llvmpipe->cs_variants_list);
196
197   llvmpipe->pipe.screen = screen;
198   llvmpipe->pipe.priv = priv;
199
200   /* Init the pipe context methods */
201   llvmpipe->pipe.destroy = llvmpipe_destroy;
202   llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
203   llvmpipe->pipe.clear = llvmpipe_clear;
204   llvmpipe->pipe.flush = do_flush;
205   llvmpipe->pipe.texture_barrier = llvmpipe_texture_barrier;
206
207   llvmpipe->pipe.render_condition = llvmpipe_render_condition;
208   llvmpipe->pipe.render_condition_mem = llvmpipe_render_condition_mem;
209
210   llvmpipe->pipe.get_device_reset_status = llvmpipe_get_device_reset_status;
211   llvmpipe_init_blend_funcs(llvmpipe);
212   llvmpipe_init_clip_funcs(llvmpipe);
213   llvmpipe_init_draw_funcs(llvmpipe);
214   llvmpipe_init_compute_funcs(llvmpipe);
215   llvmpipe_init_sampler_funcs(llvmpipe);
216   llvmpipe_init_query_funcs( llvmpipe );
217   llvmpipe_init_vertex_funcs(llvmpipe);
218   llvmpipe_init_so_funcs(llvmpipe);
219   llvmpipe_init_fs_funcs(llvmpipe);
220   llvmpipe_init_vs_funcs(llvmpipe);
221   llvmpipe_init_gs_funcs(llvmpipe);
222   llvmpipe_init_tess_funcs(llvmpipe);
223   llvmpipe_init_rasterizer_funcs(llvmpipe);
224   llvmpipe_init_context_resource_funcs( &llvmpipe->pipe );
225   llvmpipe_init_surface_functions(llvmpipe);
226
227#ifdef USE_GLOBAL_LLVM_CONTEXT
228   llvmpipe->context = LLVMGetGlobalContext();
229#else
230   llvmpipe->context = LLVMContextCreate();
231#endif
232
233   if (!llvmpipe->context)
234      goto fail;
235
236   /*
237    * Create drawing context and plug our rendering stage into it.
238    */
239   llvmpipe->draw = draw_create_with_llvm_context(&llvmpipe->pipe,
240                                                  llvmpipe->context);
241   if (!llvmpipe->draw)
242      goto fail;
243
244   draw_set_disk_cache_callbacks(llvmpipe->draw,
245                                 llvmpipe_screen(screen),
246                                 lp_draw_disk_cache_find_shader,
247                                 lp_draw_disk_cache_insert_shader);
248
249   draw_set_constant_buffer_stride(llvmpipe->draw, lp_get_constant_buffer_stride(screen));
250
251   /* FIXME: devise alternative to draw_texture_samplers */
252
253   llvmpipe->setup = lp_setup_create( &llvmpipe->pipe,
254                                      llvmpipe->draw );
255   if (!llvmpipe->setup)
256      goto fail;
257
258   llvmpipe->csctx = lp_csctx_create( &llvmpipe->pipe );
259   if (!llvmpipe->csctx)
260      goto fail;
261   llvmpipe->pipe.stream_uploader = u_upload_create_default(&llvmpipe->pipe);
262   if (!llvmpipe->pipe.stream_uploader)
263      goto fail;
264   llvmpipe->pipe.const_uploader = llvmpipe->pipe.stream_uploader;
265
266   llvmpipe->blitter = util_blitter_create(&llvmpipe->pipe);
267   if (!llvmpipe->blitter) {
268      goto fail;
269   }
270
271   /* must be done before installing Draw stages */
272   util_blitter_cache_all_shaders(llvmpipe->blitter);
273
274   /* plug in AA line/point stages */
275   draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
276   draw_install_aapoint_stage(llvmpipe->draw, &llvmpipe->pipe);
277   draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);
278
279   /* convert points and lines into triangles:
280    * (otherwise, draw points and lines natively)
281    */
282   draw_wide_point_sprites(llvmpipe->draw, FALSE);
283   draw_enable_point_sprites(llvmpipe->draw, FALSE);
284   draw_wide_point_threshold(llvmpipe->draw, 10000.0);
285   draw_wide_line_threshold(llvmpipe->draw, 10000.0);
286
287   /* initial state for clipping - enabled, with no guardband */
288   draw_set_driver_clipping(llvmpipe->draw, FALSE, FALSE, FALSE, TRUE);
289
290   lp_reset_counters();
291
292   /* If llvmpipe_set_scissor_states() is never called, we still need to
293    * make sure that derived scissor state is computed.
294    * See https://bugs.freedesktop.org/show_bug.cgi?id=101709
295    */
296   llvmpipe->dirty |= LP_NEW_SCISSOR;
297
298   return &llvmpipe->pipe;
299
300 fail:
301   llvmpipe_destroy(&llvmpipe->pipe);
302   return NULL;
303}
304
305