lp_context.c revision 73af91e938eb27b001404f11195fb06ff9b08903 
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 "pipe/p_defines.h"
35#include "util/u_math.h"
36#include "util/u_memory.h"
37#include "lp_clear.h"
38#include "lp_context.h"
39#include "lp_flush.h"
40#include "lp_prim_setup.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   unsigned i;
59
60   for (i = 0; i < lp->framebuffer.nr_cbufs; i++) {
61      lp_tile_cache_map_transfers(lp->cbuf_cache[i]);
62   }
63
64   lp_tile_cache_map_transfers(lp->zsbuf_cache);
65}
66
67
68/**
69 * Unmap any mapped drawing surfaces
70 */
71void
72llvmpipe_unmap_transfers(struct llvmpipe_context *lp)
73{
74   uint i;
75
76   for (i = 0; i < lp->framebuffer.nr_cbufs; i++) {
77      lp_tile_cache_unmap_transfers(lp->cbuf_cache[i]);
78   }
79
80   lp_tile_cache_unmap_transfers(lp->zsbuf_cache);
81}
82
83
84static void llvmpipe_destroy( struct pipe_context *pipe )
85{
86   struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
87   uint i;
88
89   if (llvmpipe->draw)
90      draw_destroy( llvmpipe->draw );
91
92      llvmpipe->quad.shade->destroy( llvmpipe->quad.shade );
93      llvmpipe->quad.depth_test->destroy( llvmpipe->quad.depth_test );
94      llvmpipe->quad.blend->destroy( llvmpipe->quad.blend );
95
96   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
97      lp_destroy_tile_cache(llvmpipe->cbuf_cache[i]);
98   lp_destroy_tile_cache(llvmpipe->zsbuf_cache);
99
100   for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
101      lp_destroy_tex_tile_cache(llvmpipe->tex_cache[i]);
102
103   for (i = 0; i < Elements(llvmpipe->constants); i++) {
104      if (llvmpipe->constants[i].buffer) {
105         pipe_buffer_reference(&llvmpipe->constants[i].buffer, NULL);
106      }
107   }
108
109   FREE( llvmpipe );
110}
111
112static unsigned int
113llvmpipe_is_texture_referenced( struct pipe_context *pipe,
114				struct pipe_texture *texture,
115				unsigned face, unsigned level)
116{
117   struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
118   unsigned i;
119
120   if(llvmpipe->dirty_render_cache) {
121      for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
122         if(llvmpipe->framebuffer.cbufs[i] &&
123            llvmpipe->framebuffer.cbufs[i]->texture == texture)
124            return PIPE_REFERENCED_FOR_WRITE;
125      }
126      if(llvmpipe->framebuffer.zsbuf &&
127         llvmpipe->framebuffer.zsbuf->texture == texture)
128         return PIPE_REFERENCED_FOR_WRITE;
129   }
130
131   /* FIXME: we also need to do the same for the texture cache */
132
133   return PIPE_UNREFERENCED;
134}
135
136static unsigned int
137llvmpipe_is_buffer_referenced( struct pipe_context *pipe,
138			       struct pipe_buffer *buf)
139{
140   return PIPE_UNREFERENCED;
141}
142
143struct pipe_context *
144llvmpipe_create( struct pipe_screen *screen )
145{
146   struct llvmpipe_context *llvmpipe = CALLOC_STRUCT(llvmpipe_context);
147   uint i;
148
149   util_init_math();
150
151   llvmpipe->pipe.winsys = screen->winsys;
152   llvmpipe->pipe.screen = screen;
153   llvmpipe->pipe.destroy = llvmpipe_destroy;
154
155   /* state setters */
156   llvmpipe->pipe.create_blend_state = llvmpipe_create_blend_state;
157   llvmpipe->pipe.bind_blend_state   = llvmpipe_bind_blend_state;
158   llvmpipe->pipe.delete_blend_state = llvmpipe_delete_blend_state;
159
160   llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
161   llvmpipe->pipe.bind_sampler_states  = llvmpipe_bind_sampler_states;
162   llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
163
164   llvmpipe->pipe.create_depth_stencil_alpha_state = llvmpipe_create_depth_stencil_state;
165   llvmpipe->pipe.bind_depth_stencil_alpha_state   = llvmpipe_bind_depth_stencil_state;
166   llvmpipe->pipe.delete_depth_stencil_alpha_state = llvmpipe_delete_depth_stencil_state;
167
168   llvmpipe->pipe.create_rasterizer_state = llvmpipe_create_rasterizer_state;
169   llvmpipe->pipe.bind_rasterizer_state   = llvmpipe_bind_rasterizer_state;
170   llvmpipe->pipe.delete_rasterizer_state = llvmpipe_delete_rasterizer_state;
171
172   llvmpipe->pipe.create_fs_state = llvmpipe_create_fs_state;
173   llvmpipe->pipe.bind_fs_state   = llvmpipe_bind_fs_state;
174   llvmpipe->pipe.delete_fs_state = llvmpipe_delete_fs_state;
175
176   llvmpipe->pipe.create_vs_state = llvmpipe_create_vs_state;
177   llvmpipe->pipe.bind_vs_state   = llvmpipe_bind_vs_state;
178   llvmpipe->pipe.delete_vs_state = llvmpipe_delete_vs_state;
179
180   llvmpipe->pipe.set_blend_color = llvmpipe_set_blend_color;
181   llvmpipe->pipe.set_clip_state = llvmpipe_set_clip_state;
182   llvmpipe->pipe.set_constant_buffer = llvmpipe_set_constant_buffer;
183   llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
184   llvmpipe->pipe.set_polygon_stipple = llvmpipe_set_polygon_stipple;
185   llvmpipe->pipe.set_scissor_state = llvmpipe_set_scissor_state;
186   llvmpipe->pipe.set_sampler_textures = llvmpipe_set_sampler_textures;
187   llvmpipe->pipe.set_viewport_state = llvmpipe_set_viewport_state;
188
189   llvmpipe->pipe.set_vertex_buffers = llvmpipe_set_vertex_buffers;
190   llvmpipe->pipe.set_vertex_elements = llvmpipe_set_vertex_elements;
191
192   llvmpipe->pipe.draw_arrays = llvmpipe_draw_arrays;
193   llvmpipe->pipe.draw_elements = llvmpipe_draw_elements;
194   llvmpipe->pipe.draw_range_elements = llvmpipe_draw_range_elements;
195   llvmpipe->pipe.set_edgeflags = llvmpipe_set_edgeflags;
196
197
198   llvmpipe->pipe.clear = llvmpipe_clear;
199   llvmpipe->pipe.flush = llvmpipe_flush;
200
201   llvmpipe->pipe.is_texture_referenced = llvmpipe_is_texture_referenced;
202   llvmpipe->pipe.is_buffer_referenced = llvmpipe_is_buffer_referenced;
203
204   llvmpipe_init_query_funcs( llvmpipe );
205   llvmpipe_init_texture_funcs( llvmpipe );
206
207   /*
208    * Alloc caches for accessing drawing surfaces and textures.
209    * Must be before quad stage setup!
210    */
211   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
212      llvmpipe->cbuf_cache[i] = lp_create_tile_cache( screen );
213   llvmpipe->zsbuf_cache = lp_create_tile_cache( screen );
214
215   for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
216      llvmpipe->tex_cache[i] = lp_create_tex_tile_cache( screen );
217
218
219   /* setup quad rendering stages */
220      llvmpipe->quad.shade = lp_quad_shade_stage(llvmpipe);
221      llvmpipe->quad.depth_test = lp_quad_depth_test_stage(llvmpipe);
222      llvmpipe->quad.blend = lp_quad_blend_stage(llvmpipe);
223
224   /* vertex shader samplers */
225   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
226      llvmpipe->tgsi.vert_samplers[i].base.get_samples = lp_get_samples_vertex;
227      llvmpipe->tgsi.vert_samplers[i].cache = llvmpipe->tex_cache[i];
228      llvmpipe->tgsi.vert_samplers_list[i] = &llvmpipe->tgsi.vert_samplers[i];
229   }
230
231   /* fragment shader samplers */
232   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
233      llvmpipe->tgsi.frag_samplers[i].base.get_samples = lp_get_samples_fragment;
234      llvmpipe->tgsi.frag_samplers[i].cache = llvmpipe->tex_cache[i];
235      llvmpipe->tgsi.frag_samplers_list[i] = &llvmpipe->tgsi.frag_samplers[i];
236   }
237
238   /*
239    * Create drawing context and plug our rendering stage into it.
240    */
241   llvmpipe->draw = draw_create();
242   if (!llvmpipe->draw)
243      goto fail;
244
245   draw_texture_samplers(llvmpipe->draw,
246                         PIPE_MAX_SAMPLERS,
247                         (struct tgsi_sampler **)
248                            llvmpipe->tgsi.vert_samplers_list);
249
250   llvmpipe->setup = lp_draw_render_stage(llvmpipe);
251   if (!llvmpipe->setup)
252      goto fail;
253
254   if (debug_get_bool_option( "LP_NO_RAST", FALSE ))
255      llvmpipe->no_rast = TRUE;
256
257   if (debug_get_bool_option( "LP_NO_VBUF", FALSE )) {
258      /* Deprecated path -- vbuf is the intended interface to the draw module:
259       */
260      draw_set_rasterize_stage(llvmpipe->draw, llvmpipe->setup);
261   }
262   else {
263      lp_init_vbuf(llvmpipe);
264   }
265
266   /* plug in AA line/point stages */
267   draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
268   draw_install_aapoint_stage(llvmpipe->draw, &llvmpipe->pipe);
269
270#if USE_DRAW_STAGE_PSTIPPLE
271   /* Do polygon stipple w/ texture map + frag prog? */
272   draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);
273#endif
274
275   lp_init_surface_functions(llvmpipe);
276
277   return &llvmpipe->pipe;
278
279 fail:
280   llvmpipe_destroy(&llvmpipe->pipe);
281   return NULL;
282}
283
284