i915_context.c revision a2caf952a150a8da395f4cf1fd30e8c867b0064e 
1/**************************************************************************
2 *
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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 "pipe/p_screen.h"
41
42
43DEBUG_GET_ONCE_BOOL_OPTION(i915_no_vbuf, "I915_NO_VBUF", FALSE)
44
45
46/*
47 * Draw functions
48 */
49
50
51static void
52i915_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
53{
54   struct i915_context *i915 = i915_context(pipe);
55   struct draw_context *draw = i915->draw;
56   void *mapped_indices = NULL;
57
58
59   /*
60    * Ack vs contants here, helps ipers a lot.
61    */
62   i915->dirty &= ~I915_NEW_VS_CONSTANTS;
63
64   if (i915->dirty)
65      i915_update_derived(i915);
66
67   /*
68    * Map index buffer, if present
69    */
70   if (info->indexed && i915->index_buffer.buffer)
71      mapped_indices = i915_buffer(i915->index_buffer.buffer)->data;
72   draw_set_mapped_index_buffer(draw, mapped_indices);
73
74   if (i915->constants[PIPE_SHADER_VERTEX])
75      draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
76                                      i915_buffer(i915->constants[PIPE_SHADER_VERTEX])->data,
77                                      (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
78                                      4 * sizeof(float)));
79   else
80      draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0, NULL, 0);
81
82   if (i915->num_vertex_sampler_views > 0)
83      i915_prepare_vertex_sampling(i915);
84
85   /*
86    * Do the drawing
87    */
88   draw_vbo(i915->draw, info);
89
90   if (mapped_indices)
91      draw_set_mapped_index_buffer(draw, NULL);
92
93   if (i915->num_vertex_sampler_views > 0)
94      i915_cleanup_vertex_sampling(i915);
95
96   /*
97    * Instead of flushing on every state change, we flush once here
98    * when we fire the vbo.
99    */
100   draw_flush(i915->draw);
101}
102
103
104/*
105 * Generic context functions
106 */
107
108
109static void i915_destroy(struct pipe_context *pipe)
110{
111   struct i915_context *i915 = i915_context(pipe);
112   int i;
113
114   if (i915->blitter)
115      util_blitter_destroy(i915->blitter);
116
117   draw_destroy(i915->draw);
118
119   if(i915->batch)
120      i915->iws->batchbuffer_destroy(i915->batch);
121
122   /* unbind framebuffer */
123   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
124      pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
125   }
126   pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
127
128   /* unbind constant buffers */
129   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
130      pipe_resource_reference(&i915->constants[i], NULL);
131   }
132
133   FREE(i915);
134}
135
136struct pipe_context *
137i915_create_context(struct pipe_screen *screen, void *priv)
138{
139   struct i915_context *i915;
140
141   i915 = CALLOC_STRUCT(i915_context);
142   if (i915 == NULL)
143      return NULL;
144
145   i915->iws = i915_screen(screen)->iws;
146   i915->base.winsys = NULL;
147   i915->base.screen = screen;
148   i915->base.priv = priv;
149
150   i915->base.destroy = i915_destroy;
151
152   if (i915_screen(screen)->debug.use_blitter)
153      i915->base.clear = i915_clear_blitter;
154   else
155      i915->base.clear = i915_clear_render;
156
157   i915->base.draw_vbo = i915_draw_vbo;
158
159   /* init this before draw */
160   util_slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer),
161                    16, UTIL_SLAB_SINGLETHREADED);
162   util_slab_create(&i915->texture_transfer_pool, sizeof(struct i915_transfer),
163                    16, UTIL_SLAB_SINGLETHREADED);
164
165   /* Batch stream debugging is a bit hacked up at the moment:
166    */
167   i915->batch = i915->iws->batchbuffer_create(i915->iws);
168
169   /*
170    * Create drawing context and plug our rendering stage into it.
171    */
172   i915->draw = draw_create(&i915->base);
173   assert(i915->draw);
174   if (!debug_get_option_i915_no_vbuf()) {
175      draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
176   } else {
177      draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
178   }
179
180   i915_init_surface_functions(i915);
181   i915_init_state_functions(i915);
182   i915_init_flush_functions(i915);
183   i915_init_resource_functions(i915);
184   i915_init_query_functions(i915);
185
186   draw_install_aaline_stage(i915->draw, &i915->base);
187   draw_install_aapoint_stage(i915->draw, &i915->base);
188   draw_install_pstipple_stage(i915->draw, &i915->base);
189   draw_enable_point_sprites(i915->draw, TRUE);
190
191   /* augmented draw pipeline clobbers state functions */
192   i915_init_fixup_state_functions(i915);
193
194   /* Create blitter last - calls state creation functions. */
195   i915->blitter = util_blitter_create(&i915->base);
196   assert(i915->blitter);
197
198   i915->dirty = ~0;
199   i915->hardware_dirty = ~0;
200   i915->immediate_dirty = ~0;
201   i915->dynamic_dirty = ~0;
202   i915->static_dirty = ~0;
203   i915->flush_dirty = 0;
204
205   return &i915->base;
206}
207