lp_context.c revision 4486012245c5f526059d3872ac3561f53705d1cf 
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_texture.h"
46#include "lp_winsys.h"
47#include "lp_query.h"
48
49
50
51/**
52 * Map any drawing surfaces which aren't already mapped
53 */
54void
55llvmpipe_map_transfers(struct llvmpipe_context *lp)
56{
57   unsigned i;
58
59   for (i = 0; i < lp->framebuffer.nr_cbufs; i++) {
60      lp_tile_cache_map_transfers(lp->cbuf_cache[i]);
61   }
62
63   lp_tile_cache_map_transfers(lp->zsbuf_cache);
64}
65
66
67/**
68 * Unmap any mapped drawing surfaces
69 */
70void
71llvmpipe_unmap_transfers(struct llvmpipe_context *lp)
72{
73   uint i;
74
75   for (i = 0; i < lp->framebuffer.nr_cbufs; i++) {
76      lp_tile_cache_unmap_transfers(lp->cbuf_cache[i]);
77   }
78
79   lp_tile_cache_unmap_transfers(lp->zsbuf_cache);
80}
81
82
83static void llvmpipe_destroy( struct pipe_context *pipe )
84{
85   struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
86   uint i;
87
88   if (llvmpipe->draw)
89      draw_destroy( llvmpipe->draw );
90
91      llvmpipe->quad.polygon_stipple->destroy( llvmpipe->quad.polygon_stipple );
92      llvmpipe->quad.earlyz->destroy( llvmpipe->quad.earlyz );
93      llvmpipe->quad.shade->destroy( llvmpipe->quad.shade );
94      llvmpipe->quad.alpha_test->destroy( llvmpipe->quad.alpha_test );
95      llvmpipe->quad.depth_test->destroy( llvmpipe->quad.depth_test );
96      llvmpipe->quad.stencil_test->destroy( llvmpipe->quad.stencil_test );
97      llvmpipe->quad.occlusion->destroy( llvmpipe->quad.occlusion );
98      llvmpipe->quad.coverage->destroy( llvmpipe->quad.coverage );
99      llvmpipe->quad.blend->destroy( llvmpipe->quad.blend );
100      llvmpipe->quad.colormask->destroy( llvmpipe->quad.colormask );
101      llvmpipe->quad.output->destroy( llvmpipe->quad.output );
102
103   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
104      lp_destroy_tile_cache(llvmpipe->cbuf_cache[i]);
105   lp_destroy_tile_cache(llvmpipe->zsbuf_cache);
106
107   for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
108      lp_destroy_tile_cache(llvmpipe->tex_cache[i]);
109
110   for (i = 0; i < Elements(llvmpipe->constants); i++) {
111      if (llvmpipe->constants[i].buffer) {
112         pipe_buffer_reference(&llvmpipe->constants[i].buffer, NULL);
113      }
114   }
115
116   FREE( llvmpipe );
117}
118
119static unsigned int
120llvmpipe_is_texture_referenced( struct pipe_context *pipe,
121				struct pipe_texture *texture,
122				unsigned face, unsigned level)
123{
124   struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
125   unsigned i;
126
127   if(llvmpipe->dirty_render_cache) {
128      for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
129         if(llvmpipe->framebuffer.cbufs[i] &&
130            llvmpipe->framebuffer.cbufs[i]->texture == texture)
131            return PIPE_REFERENCED_FOR_WRITE;
132      }
133      if(llvmpipe->framebuffer.zsbuf &&
134         llvmpipe->framebuffer.zsbuf->texture == texture)
135         return PIPE_REFERENCED_FOR_WRITE;
136   }
137
138   /* FIXME: we also need to do the same for the texture cache */
139
140   return PIPE_UNREFERENCED;
141}
142
143static unsigned int
144llvmpipe_is_buffer_referenced( struct pipe_context *pipe,
145			       struct pipe_buffer *buf)
146{
147   return PIPE_UNREFERENCED;
148}
149
150struct pipe_context *
151llvmpipe_create( struct pipe_screen *screen )
152{
153   struct llvmpipe_context *llvmpipe = CALLOC_STRUCT(llvmpipe_context);
154   uint i;
155
156   util_init_math();
157
158#ifdef PIPE_ARCH_X86
159   llvmpipe->use_sse = !debug_get_bool_option( "GALLIUM_NOSSE", FALSE );
160#else
161   llvmpipe->use_sse = FALSE;
162#endif
163
164   llvmpipe->dump_fs = debug_get_bool_option( "GALLIUM_DUMP_FS", FALSE );
165
166   llvmpipe->pipe.winsys = screen->winsys;
167   llvmpipe->pipe.screen = screen;
168   llvmpipe->pipe.destroy = llvmpipe_destroy;
169
170   /* state setters */
171   llvmpipe->pipe.create_blend_state = llvmpipe_create_blend_state;
172   llvmpipe->pipe.bind_blend_state   = llvmpipe_bind_blend_state;
173   llvmpipe->pipe.delete_blend_state = llvmpipe_delete_blend_state;
174
175   llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
176   llvmpipe->pipe.bind_sampler_states  = llvmpipe_bind_sampler_states;
177   llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
178
179   llvmpipe->pipe.create_depth_stencil_alpha_state = llvmpipe_create_depth_stencil_state;
180   llvmpipe->pipe.bind_depth_stencil_alpha_state   = llvmpipe_bind_depth_stencil_state;
181   llvmpipe->pipe.delete_depth_stencil_alpha_state = llvmpipe_delete_depth_stencil_state;
182
183   llvmpipe->pipe.create_rasterizer_state = llvmpipe_create_rasterizer_state;
184   llvmpipe->pipe.bind_rasterizer_state   = llvmpipe_bind_rasterizer_state;
185   llvmpipe->pipe.delete_rasterizer_state = llvmpipe_delete_rasterizer_state;
186
187   llvmpipe->pipe.create_fs_state = llvmpipe_create_fs_state;
188   llvmpipe->pipe.bind_fs_state   = llvmpipe_bind_fs_state;
189   llvmpipe->pipe.delete_fs_state = llvmpipe_delete_fs_state;
190
191   llvmpipe->pipe.create_vs_state = llvmpipe_create_vs_state;
192   llvmpipe->pipe.bind_vs_state   = llvmpipe_bind_vs_state;
193   llvmpipe->pipe.delete_vs_state = llvmpipe_delete_vs_state;
194
195   llvmpipe->pipe.set_blend_color = llvmpipe_set_blend_color;
196   llvmpipe->pipe.set_clip_state = llvmpipe_set_clip_state;
197   llvmpipe->pipe.set_constant_buffer = llvmpipe_set_constant_buffer;
198   llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
199   llvmpipe->pipe.set_polygon_stipple = llvmpipe_set_polygon_stipple;
200   llvmpipe->pipe.set_scissor_state = llvmpipe_set_scissor_state;
201   llvmpipe->pipe.set_sampler_textures = llvmpipe_set_sampler_textures;
202   llvmpipe->pipe.set_viewport_state = llvmpipe_set_viewport_state;
203
204   llvmpipe->pipe.set_vertex_buffers = llvmpipe_set_vertex_buffers;
205   llvmpipe->pipe.set_vertex_elements = llvmpipe_set_vertex_elements;
206
207   llvmpipe->pipe.draw_arrays = llvmpipe_draw_arrays;
208   llvmpipe->pipe.draw_elements = llvmpipe_draw_elements;
209   llvmpipe->pipe.draw_range_elements = llvmpipe_draw_range_elements;
210   llvmpipe->pipe.set_edgeflags = llvmpipe_set_edgeflags;
211
212
213   llvmpipe->pipe.clear = llvmpipe_clear;
214   llvmpipe->pipe.flush = llvmpipe_flush;
215
216   llvmpipe->pipe.is_texture_referenced = llvmpipe_is_texture_referenced;
217   llvmpipe->pipe.is_buffer_referenced = llvmpipe_is_buffer_referenced;
218
219   llvmpipe_init_query_funcs( llvmpipe );
220   llvmpipe_init_texture_funcs( llvmpipe );
221
222   /*
223    * Alloc caches for accessing drawing surfaces and textures.
224    * Must be before quad stage setup!
225    */
226   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
227      llvmpipe->cbuf_cache[i] = lp_create_tile_cache( screen );
228   llvmpipe->zsbuf_cache = lp_create_tile_cache( screen );
229
230   for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
231      llvmpipe->tex_cache[i] = lp_create_tile_cache( screen );
232
233
234   /* setup quad rendering stages */
235      llvmpipe->quad.polygon_stipple = lp_quad_polygon_stipple_stage(llvmpipe);
236      llvmpipe->quad.earlyz = lp_quad_earlyz_stage(llvmpipe);
237      llvmpipe->quad.shade = lp_quad_shade_stage(llvmpipe);
238      llvmpipe->quad.alpha_test = lp_quad_alpha_test_stage(llvmpipe);
239      llvmpipe->quad.depth_test = lp_quad_depth_test_stage(llvmpipe);
240      llvmpipe->quad.stencil_test = lp_quad_stencil_test_stage(llvmpipe);
241      llvmpipe->quad.occlusion = lp_quad_occlusion_stage(llvmpipe);
242      llvmpipe->quad.coverage = lp_quad_coverage_stage(llvmpipe);
243      llvmpipe->quad.blend = lp_quad_blend_stage(llvmpipe);
244      llvmpipe->quad.colormask = lp_quad_colormask_stage(llvmpipe);
245      llvmpipe->quad.output = lp_quad_output_stage(llvmpipe);
246
247   /* vertex shader samplers */
248   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
249      llvmpipe->tgsi.vert_samplers[i].base.get_samples = lp_get_samples_vertex;
250      llvmpipe->tgsi.vert_samplers[i].cache = llvmpipe->tex_cache[i];
251      llvmpipe->tgsi.vert_samplers_list[i] = &llvmpipe->tgsi.vert_samplers[i];
252   }
253
254   /* fragment shader samplers */
255   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
256      llvmpipe->tgsi.frag_samplers[i].base.get_samples = lp_get_samples_fragment;
257      llvmpipe->tgsi.frag_samplers[i].cache = llvmpipe->tex_cache[i];
258      llvmpipe->tgsi.frag_samplers_list[i] = &llvmpipe->tgsi.frag_samplers[i];
259   }
260
261   /*
262    * Create drawing context and plug our rendering stage into it.
263    */
264   llvmpipe->draw = draw_create();
265   if (!llvmpipe->draw)
266      goto fail;
267
268   draw_texture_samplers(llvmpipe->draw,
269                         PIPE_MAX_SAMPLERS,
270                         (struct tgsi_sampler **)
271                            llvmpipe->tgsi.vert_samplers_list);
272
273   llvmpipe->setup = lp_draw_render_stage(llvmpipe);
274   if (!llvmpipe->setup)
275      goto fail;
276
277   if (debug_get_bool_option( "LP_NO_RAST", FALSE ))
278      llvmpipe->no_rast = TRUE;
279
280   if (debug_get_bool_option( "LP_NO_VBUF", FALSE )) {
281      /* Deprecated path -- vbuf is the intended interface to the draw module:
282       */
283      draw_set_rasterize_stage(llvmpipe->draw, llvmpipe->setup);
284   }
285   else {
286      lp_init_vbuf(llvmpipe);
287   }
288
289   /* plug in AA line/point stages */
290   draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
291   draw_install_aapoint_stage(llvmpipe->draw, &llvmpipe->pipe);
292
293#if USE_DRAW_STAGE_PSTIPPLE
294   /* Do polygon stipple w/ texture map + frag prog? */
295   draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);
296#endif
297
298   lp_init_surface_functions(llvmpipe);
299
300   return &llvmpipe->pipe;
301
302 fail:
303   llvmpipe_destroy(&llvmpipe->pipe);
304   return NULL;
305}
306
307