1/**************************************************************************
2 *
3 * Copyright 2003 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include "i915_context.h"
29#include "i915_state.h"
30#include "i915_screen.h"
31#include "i915_surface.h"
32#include "i915_query.h"
33#include "i915_batch.h"
34#include "i915_resource.h"
35
36#include "draw/draw_context.h"
37#include "pipe/p_defines.h"
38#include "util/u_inlines.h"
39#include "util/u_memory.h"
40#include "util/u_prim.h"
41#include "util/u_upload_mgr.h"
42#include "pipe/p_screen.h"
43
44
45DEBUG_GET_ONCE_BOOL_OPTION(i915_no_vbuf, "I915_NO_VBUF", FALSE)
46
47
48/*
49 * Draw functions
50 */
51
52
53static void
54i915_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
55{
56   struct i915_context *i915 = i915_context(pipe);
57   struct draw_context *draw = i915->draw;
58   const void *mapped_indices = NULL;
59   unsigned i;
60
61   if (!u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
62      return;
63
64   /*
65    * Ack vs contants here, helps ipers a lot.
66    */
67   i915->dirty &= ~I915_NEW_VS_CONSTANTS;
68
69   if (i915->dirty)
70      i915_update_derived(i915);
71
72   /*
73    * Map vertex buffers
74    */
75   for (i = 0; i < i915->nr_vertex_buffers; i++) {
76      const void *buf = i915->vertex_buffers[i].is_user_buffer ?
77                           i915->vertex_buffers[i].buffer.user : NULL;
78      if (!buf) {
79         if (!i915->vertex_buffers[i].buffer.resource)
80            continue;
81         buf = i915_buffer(i915->vertex_buffers[i].buffer.resource)->data;
82      }
83      draw_set_mapped_vertex_buffer(draw, i, buf, ~0);
84   }
85
86   /*
87    * Map index buffer, if present
88    */
89   if (info->index_size) {
90      mapped_indices = info->has_user_indices ? info->index.user : NULL;
91      if (!mapped_indices)
92         mapped_indices = i915_buffer(info->index.resource)->data;
93      draw_set_indexes(draw,
94                       (ubyte *) mapped_indices,
95                       info->index_size, ~0);
96   }
97
98   if (i915->constants[PIPE_SHADER_VERTEX])
99      draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
100                                      i915_buffer(i915->constants[PIPE_SHADER_VERTEX])->data,
101                                      (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
102                                      4 * sizeof(float)));
103   else
104      draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0, NULL, 0);
105
106   if (i915->num_vertex_sampler_views > 0)
107      i915_prepare_vertex_sampling(i915);
108
109   /*
110    * Do the drawing
111    */
112   draw_vbo(i915->draw, info);
113
114   /*
115    * unmap vertex/index buffers
116    */
117   for (i = 0; i < i915->nr_vertex_buffers; i++) {
118      draw_set_mapped_vertex_buffer(i915->draw, i, NULL, 0);
119   }
120   if (mapped_indices)
121      draw_set_indexes(draw, NULL, 0, 0);
122
123   if (i915->num_vertex_sampler_views > 0)
124      i915_cleanup_vertex_sampling(i915);
125
126   /*
127    * Instead of flushing on every state change, we flush once here
128    * when we fire the vbo.
129    */
130   draw_flush(i915->draw);
131}
132
133
134/*
135 * Generic context functions
136 */
137
138
139static void i915_destroy(struct pipe_context *pipe)
140{
141   struct i915_context *i915 = i915_context(pipe);
142   int i;
143
144   if (i915->blitter)
145      util_blitter_destroy(i915->blitter);
146
147   draw_destroy(i915->draw);
148
149   if (i915->base.stream_uploader)
150      u_upload_destroy(i915->base.stream_uploader);
151
152   if(i915->batch)
153      i915->iws->batchbuffer_destroy(i915->batch);
154
155   /* unbind framebuffer */
156   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
157      pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
158   }
159   pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
160
161   /* unbind constant buffers */
162   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
163      pipe_resource_reference(&i915->constants[i], NULL);
164   }
165
166   FREE(i915);
167}
168
169struct pipe_context *
170i915_create_context(struct pipe_screen *screen, void *priv, unsigned flags)
171{
172   struct i915_context *i915;
173
174   i915 = CALLOC_STRUCT(i915_context);
175   if (!i915)
176      return NULL;
177
178   i915->iws = i915_screen(screen)->iws;
179   i915->base.screen = screen;
180   i915->base.priv = priv;
181   i915->base.stream_uploader = u_upload_create_default(&i915->base);
182   i915->base.const_uploader = i915->base.stream_uploader;
183
184   i915->base.destroy = i915_destroy;
185
186   if (i915_screen(screen)->debug.use_blitter)
187      i915->base.clear = i915_clear_blitter;
188   else
189      i915->base.clear = i915_clear_render;
190
191   i915->base.draw_vbo = i915_draw_vbo;
192
193   /* init this before draw */
194   slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer),
195                    16);
196   slab_create(&i915->texture_transfer_pool, sizeof(struct i915_transfer),
197                    16);
198
199   /* Batch stream debugging is a bit hacked up at the moment:
200    */
201   i915->batch = i915->iws->batchbuffer_create(i915->iws);
202
203   /*
204    * Create drawing context and plug our rendering stage into it.
205    */
206   i915->draw = draw_create(&i915->base);
207   assert(i915->draw);
208   if (!debug_get_option_i915_no_vbuf()) {
209      draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
210   } else {
211      draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
212   }
213
214   i915_init_surface_functions(i915);
215   i915_init_state_functions(i915);
216   i915_init_flush_functions(i915);
217   i915_init_resource_functions(i915);
218   i915_init_query_functions(i915);
219
220   /* Create blitter. */
221   i915->blitter = util_blitter_create(&i915->base);
222   assert(i915->blitter);
223
224   /* must be done before installing Draw stages */
225   util_blitter_cache_all_shaders(i915->blitter);
226
227   draw_install_aaline_stage(i915->draw, &i915->base);
228   draw_install_aapoint_stage(i915->draw, &i915->base);
229   draw_enable_point_sprites(i915->draw, TRUE);
230
231   i915->dirty = ~0;
232   i915->hardware_dirty = ~0;
233   i915->immediate_dirty = ~0;
234   i915->dynamic_dirty = ~0;
235   i915->static_dirty = ~0;
236   i915->flush_dirty = 0;
237
238   return &i915->base;
239}
240