lp_context.c revision 4a49301e 
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 "lp_clear.h"
39#include "lp_context.h"
40#include "lp_flush.h"
41#include "lp_prim_vbuf.h"
42#include "lp_state.h"
43#include "lp_surface.h"
44#include "lp_tile_cache.h"
45#include "lp_tex_cache.h"
46#include "lp_texture.h"
47#include "lp_winsys.h"
48#include "lp_query.h"
49
50
51
52/**
53 * Map any drawing surfaces which aren't already mapped
54 */
55void
56llvmpipe_map_transfers(struct llvmpipe_context *lp)
57{
58   struct pipe_screen *screen = lp->pipe.screen;
59   struct pipe_surface *zsbuf = lp->framebuffer.zsbuf;
60   unsigned i;
61
62   for (i = 0; i < lp->framebuffer.nr_cbufs; i++) {
63      lp_tile_cache_map_transfers(lp->cbuf_cache[i]);
64   }
65
66   if(zsbuf) {
67      if(!lp->zsbuf_transfer)
68         lp->zsbuf_transfer = screen->get_tex_transfer(screen, zsbuf->texture,
69                                                       zsbuf->face, zsbuf->level, zsbuf->zslice,
70                                                       PIPE_TRANSFER_READ_WRITE,
71                                                       0, 0, zsbuf->width, zsbuf->height);
72      if(lp->zsbuf_transfer && !lp->zsbuf_map)
73         lp->zsbuf_map = screen->transfer_map(screen, lp->zsbuf_transfer);
74
75   }
76}
77
78
79/**
80 * Unmap any mapped drawing surfaces
81 */
82void
83llvmpipe_unmap_transfers(struct llvmpipe_context *lp)
84{
85   uint i;
86
87   for (i = 0; i < lp->framebuffer.nr_cbufs; i++) {
88      lp_tile_cache_unmap_transfers(lp->cbuf_cache[i]);
89   }
90
91   if(lp->zsbuf_transfer) {
92      struct pipe_screen *screen = lp->pipe.screen;
93
94      if(lp->zsbuf_map) {
95         screen->transfer_unmap(screen, lp->zsbuf_transfer);
96         lp->zsbuf_map = NULL;
97      }
98   }
99}
100
101
102static void llvmpipe_destroy( struct pipe_context *pipe )
103{
104   struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
105   uint i;
106
107   if (llvmpipe->draw)
108      draw_destroy( llvmpipe->draw );
109
110   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
111      lp_destroy_tile_cache(llvmpipe->cbuf_cache[i]);
112      pipe_surface_reference(&llvmpipe->framebuffer.cbufs[i], NULL);
113   }
114   pipe_surface_reference(&llvmpipe->framebuffer.zsbuf, NULL);
115
116   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
117      lp_destroy_tex_tile_cache(llvmpipe->tex_cache[i]);
118      pipe_texture_reference(&llvmpipe->texture[i], NULL);
119   }
120
121   for (i = 0; i < Elements(llvmpipe->constants); i++) {
122      if (llvmpipe->constants[i].buffer) {
123         pipe_buffer_reference(&llvmpipe->constants[i].buffer, NULL);
124      }
125   }
126
127   align_free( llvmpipe );
128}
129
130static unsigned int
131llvmpipe_is_texture_referenced( struct pipe_context *pipe,
132				struct pipe_texture *texture,
133				unsigned face, unsigned level)
134{
135   struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
136   unsigned i;
137
138   if(llvmpipe->dirty_render_cache) {
139      for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
140         if(llvmpipe->framebuffer.cbufs[i] &&
141            llvmpipe->framebuffer.cbufs[i]->texture == texture)
142            return PIPE_REFERENCED_FOR_WRITE;
143      }
144      if(llvmpipe->framebuffer.zsbuf &&
145         llvmpipe->framebuffer.zsbuf->texture == texture)
146         return PIPE_REFERENCED_FOR_WRITE;
147   }
148
149   return PIPE_UNREFERENCED;
150}
151
152static unsigned int
153llvmpipe_is_buffer_referenced( struct pipe_context *pipe,
154			       struct pipe_buffer *buf)
155{
156   return PIPE_UNREFERENCED;
157}
158
159struct pipe_context *
160llvmpipe_create( struct pipe_screen *screen )
161{
162   struct llvmpipe_context *llvmpipe;
163   uint i;
164
165   llvmpipe = align_malloc(sizeof(struct llvmpipe_context), 16);
166   if (!llvmpipe)
167      return NULL;
168
169   util_init_math();
170
171   memset(llvmpipe, 0, sizeof *llvmpipe);
172
173   llvmpipe->pipe.winsys = screen->winsys;
174   llvmpipe->pipe.screen = screen;
175   llvmpipe->pipe.destroy = llvmpipe_destroy;
176
177   /* state setters */
178   llvmpipe->pipe.create_blend_state = llvmpipe_create_blend_state;
179   llvmpipe->pipe.bind_blend_state   = llvmpipe_bind_blend_state;
180   llvmpipe->pipe.delete_blend_state = llvmpipe_delete_blend_state;
181
182   llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
183   llvmpipe->pipe.bind_sampler_states  = llvmpipe_bind_sampler_states;
184   llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
185
186   llvmpipe->pipe.create_depth_stencil_alpha_state = llvmpipe_create_depth_stencil_state;
187   llvmpipe->pipe.bind_depth_stencil_alpha_state   = llvmpipe_bind_depth_stencil_state;
188   llvmpipe->pipe.delete_depth_stencil_alpha_state = llvmpipe_delete_depth_stencil_state;
189
190   llvmpipe->pipe.create_rasterizer_state = llvmpipe_create_rasterizer_state;
191   llvmpipe->pipe.bind_rasterizer_state   = llvmpipe_bind_rasterizer_state;
192   llvmpipe->pipe.delete_rasterizer_state = llvmpipe_delete_rasterizer_state;
193
194   llvmpipe->pipe.create_fs_state = llvmpipe_create_fs_state;
195   llvmpipe->pipe.bind_fs_state   = llvmpipe_bind_fs_state;
196   llvmpipe->pipe.delete_fs_state = llvmpipe_delete_fs_state;
197
198   llvmpipe->pipe.create_vs_state = llvmpipe_create_vs_state;
199   llvmpipe->pipe.bind_vs_state   = llvmpipe_bind_vs_state;
200   llvmpipe->pipe.delete_vs_state = llvmpipe_delete_vs_state;
201
202   llvmpipe->pipe.set_blend_color = llvmpipe_set_blend_color;
203   llvmpipe->pipe.set_clip_state = llvmpipe_set_clip_state;
204   llvmpipe->pipe.set_constant_buffer = llvmpipe_set_constant_buffer;
205   llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
206   llvmpipe->pipe.set_polygon_stipple = llvmpipe_set_polygon_stipple;
207   llvmpipe->pipe.set_scissor_state = llvmpipe_set_scissor_state;
208   llvmpipe->pipe.set_sampler_textures = llvmpipe_set_sampler_textures;
209   llvmpipe->pipe.set_viewport_state = llvmpipe_set_viewport_state;
210
211   llvmpipe->pipe.set_vertex_buffers = llvmpipe_set_vertex_buffers;
212   llvmpipe->pipe.set_vertex_elements = llvmpipe_set_vertex_elements;
213
214   llvmpipe->pipe.draw_arrays = llvmpipe_draw_arrays;
215   llvmpipe->pipe.draw_elements = llvmpipe_draw_elements;
216   llvmpipe->pipe.draw_range_elements = llvmpipe_draw_range_elements;
217   llvmpipe->pipe.set_edgeflags = llvmpipe_set_edgeflags;
218
219
220   llvmpipe->pipe.clear = llvmpipe_clear;
221   llvmpipe->pipe.flush = llvmpipe_flush;
222
223   llvmpipe->pipe.is_texture_referenced = llvmpipe_is_texture_referenced;
224   llvmpipe->pipe.is_buffer_referenced = llvmpipe_is_buffer_referenced;
225
226   llvmpipe_init_query_funcs( llvmpipe );
227   llvmpipe_init_texture_funcs( llvmpipe );
228
229   /*
230    * Alloc caches for accessing drawing surfaces and textures.
231    */
232   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
233      llvmpipe->cbuf_cache[i] = lp_create_tile_cache( screen );
234
235   for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
236      llvmpipe->tex_cache[i] = lp_create_tex_tile_cache( screen );
237
238
239   /* vertex shader samplers */
240   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
241      llvmpipe->tgsi.vert_samplers[i].base.get_samples = lp_get_samples;
242      llvmpipe->tgsi.vert_samplers[i].processor = TGSI_PROCESSOR_VERTEX;
243      llvmpipe->tgsi.vert_samplers[i].cache = llvmpipe->tex_cache[i];
244      llvmpipe->tgsi.vert_samplers_list[i] = &llvmpipe->tgsi.vert_samplers[i];
245   }
246
247   /* fragment shader samplers */
248   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
249      llvmpipe->tgsi.frag_samplers[i].base.get_samples = lp_get_samples;
250      llvmpipe->tgsi.frag_samplers[i].processor = TGSI_PROCESSOR_FRAGMENT;
251      llvmpipe->tgsi.frag_samplers[i].cache = llvmpipe->tex_cache[i];
252      llvmpipe->tgsi.frag_samplers_list[i] = &llvmpipe->tgsi.frag_samplers[i];
253   }
254
255   /*
256    * Create drawing context and plug our rendering stage into it.
257    */
258   llvmpipe->draw = draw_create();
259   if (!llvmpipe->draw)
260      goto fail;
261
262   draw_texture_samplers(llvmpipe->draw,
263                         PIPE_MAX_SAMPLERS,
264                         (struct tgsi_sampler **)
265                            llvmpipe->tgsi.vert_samplers_list);
266
267   if (debug_get_bool_option( "LP_NO_RAST", FALSE ))
268      llvmpipe->no_rast = TRUE;
269
270   llvmpipe->vbuf_backend = lp_create_vbuf_backend(llvmpipe);
271   if (!llvmpipe->vbuf_backend)
272      goto fail;
273
274   llvmpipe->vbuf = draw_vbuf_stage(llvmpipe->draw, llvmpipe->vbuf_backend);
275   if (!llvmpipe->vbuf)
276      goto fail;
277
278   draw_set_rasterize_stage(llvmpipe->draw, llvmpipe->vbuf);
279   draw_set_render(llvmpipe->draw, llvmpipe->vbuf_backend);
280
281
282
283   /* plug in AA line/point stages */
284   draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
285   draw_install_aapoint_stage(llvmpipe->draw, &llvmpipe->pipe);
286
287#if USE_DRAW_STAGE_PSTIPPLE
288   /* Do polygon stipple w/ texture map + frag prog? */
289   draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);
290#endif
291
292   lp_init_surface_functions(llvmpipe);
293
294   return &llvmpipe->pipe;
295
296 fail:
297   llvmpipe_destroy(&llvmpipe->pipe);
298   return NULL;
299}
300
301