i915_context.c revision 052122a8cd759e8749fee3412bae5d905ee0d965 
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_batch.h"
33#include "i915_resource.h"
34
35#include "draw/draw_context.h"
36#include "pipe/p_defines.h"
37#include "util/u_inlines.h"
38#include "util/u_memory.h"
39#include "pipe/p_screen.h"
40
41
42DEBUG_GET_ONCE_BOOL_OPTION(i915_no_vbuf, "I915_NO_VBUF", FALSE);
43
44
45/*
46 * Draw functions
47 */
48
49
50static void
51i915_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
52{
53   struct i915_context *i915 = i915_context(pipe);
54   struct draw_context *draw = i915->draw;
55   void *mapped_indices = NULL;
56   unsigned cbuf_dirty;
57
58
59   /*
60    * Ack vs contants here, helps ipers a lot.
61    */
62   cbuf_dirty = i915->dirty & I915_NEW_VS_CONSTANTS;
63   i915->dirty &= ~I915_NEW_VS_CONSTANTS;
64
65   if (i915->dirty)
66      i915_update_derived(i915);
67
68   /*
69    * Map index buffer, if present
70    */
71   if (info->indexed && i915->index_buffer.buffer)
72      mapped_indices = i915_buffer(i915->index_buffer.buffer)->data;
73   draw_set_mapped_index_buffer(draw, mapped_indices);
74
75   if (cbuf_dirty) {
76      if (i915->constants[PIPE_SHADER_VERTEX])
77         draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
78                                         i915_buffer(i915->constants[PIPE_SHADER_VERTEX])->data,
79                                         (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
80                                         4 * sizeof(float)));
81      else
82         draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0, NULL, 0);
83   }
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
94
95/*
96 * Generic context functions
97 */
98
99
100static void i915_destroy(struct pipe_context *pipe)
101{
102   struct i915_context *i915 = i915_context(pipe);
103   int i;
104
105   draw_destroy(i915->draw);
106
107   if(i915->batch)
108      i915->iws->batchbuffer_destroy(i915->batch);
109
110   /* unbind framebuffer */
111   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
112      pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
113   }
114   pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
115
116   /* unbind constant buffers */
117   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
118      pipe_resource_reference(&i915->constants[i], NULL);
119   }
120
121   FREE(i915);
122}
123
124struct pipe_context *
125i915_create_context(struct pipe_screen *screen, void *priv)
126{
127   struct i915_context *i915;
128
129   i915 = CALLOC_STRUCT(i915_context);
130   if (i915 == NULL)
131      return NULL;
132
133   i915->iws = i915_screen(screen)->iws;
134   i915->base.winsys = NULL;
135   i915->base.screen = screen;
136   i915->base.priv = priv;
137
138   i915->base.destroy = i915_destroy;
139
140   i915->base.clear = i915_clear;
141
142   i915->base.draw_vbo = i915_draw_vbo;
143
144   /* init this before draw */
145   util_slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer),
146                    16, UTIL_SLAB_SINGLETHREADED);
147
148   /*
149    * Create drawing context and plug our rendering stage into it.
150    */
151   i915->draw = draw_create(&i915->base);
152   assert(i915->draw);
153   if (!debug_get_option_i915_no_vbuf()) {
154      draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
155   } else {
156      draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
157   }
158
159   i915_init_surface_functions(i915);
160   i915_init_state_functions(i915);
161   i915_init_flush_functions(i915);
162   i915_init_resource_functions(i915);
163
164   draw_install_aaline_stage(i915->draw, &i915->base);
165   draw_install_aapoint_stage(i915->draw, &i915->base);
166
167   i915->dirty = ~0;
168   i915->hardware_dirty = ~0;
169   i915->immediate_dirty = ~0;
170   i915->dynamic_dirty = ~0;
171
172   /* Batch stream debugging is a bit hacked up at the moment:
173    */
174   i915->batch = i915->iws->batchbuffer_create(i915->iws);
175
176   return &i915->base;
177}
178