i915_context.c revision 0c3352b6df7972fd530a901396b392d0293d27ae 
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
42/*
43 * Draw functions
44 */
45
46
47static void
48i915_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
49{
50   struct i915_context *i915 = i915_context(pipe);
51   struct draw_context *draw = i915->draw;
52   void *mapped_indices = NULL;
53   unsigned i;
54   unsigned cbuf_dirty;
55
56
57   /*
58    * Ack vs contants here, helps ipers a lot.
59    */
60   cbuf_dirty = i915->dirty & I915_NEW_VS_CONSTANTS;
61   i915->dirty &= ~I915_NEW_VS_CONSTANTS;
62
63   if (i915->dirty)
64      i915_update_derived(i915);
65
66   /*
67    * Map vertex buffers
68    */
69   for (i = 0; i < i915->num_vertex_buffers; i++) {
70      void *buf = i915_buffer(i915->vertex_buffer[i].buffer)->data;
71      draw_set_mapped_vertex_buffer(draw, i, buf);
72   }
73
74   /*
75    * Map index buffer, if present
76    */
77   if (info->indexed && i915->index_buffer.buffer)
78      mapped_indices = i915_buffer(i915->index_buffer.buffer)->data;
79   draw_set_mapped_index_buffer(draw, mapped_indices);
80
81   if (cbuf_dirty) {
82      draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
83                                      i915_buffer(i915->constants[PIPE_SHADER_VERTEX])->data,
84                                      (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
85                                         4 * sizeof(float)));
86   }
87
88   /*
89    * Do the drawing
90    */
91   draw_vbo(i915->draw, info);
92
93   /*
94    * unmap vertex/index buffers
95    */
96   for (i = 0; i < i915->num_vertex_buffers; i++) {
97      draw_set_mapped_vertex_buffer(draw, i, NULL);
98   }
99
100   if (mapped_indices)
101      draw_set_mapped_index_buffer(draw, NULL);
102}
103
104
105/*
106 * Generic context functions
107 */
108
109
110static void i915_destroy(struct pipe_context *pipe)
111{
112   struct i915_context *i915 = i915_context(pipe);
113   int i;
114
115   draw_destroy(i915->draw);
116
117   if(i915->batch)
118      i915->iws->batchbuffer_destroy(i915->batch);
119
120   for (i = 0; i < i915->num_vertex_buffers; i++) {
121      pipe_resource_reference(&i915->vertex_buffer[i].buffer, NULL);
122   }
123
124   /* unbind framebuffer */
125   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
126      pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
127   }
128   pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
129
130   /* unbind constant buffers */
131   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
132      pipe_resource_reference(&i915->constants[i], NULL);
133   }
134
135   FREE(i915);
136}
137
138struct pipe_context *
139i915_create_context(struct pipe_screen *screen, void *priv)
140{
141   struct i915_context *i915;
142
143   i915 = CALLOC_STRUCT(i915_context);
144   if (i915 == NULL)
145      return NULL;
146
147   i915->iws = i915_screen(screen)->iws;
148   i915->base.winsys = NULL;
149   i915->base.screen = screen;
150   i915->base.priv = priv;
151
152   i915->base.destroy = i915_destroy;
153
154   i915->base.clear = i915_clear;
155
156   i915->base.draw_vbo = i915_draw_vbo;
157
158   /* init this before draw */
159   util_slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer),
160                    16, UTIL_SLAB_SINGLETHREADED);
161
162   /*
163    * Create drawing context and plug our rendering stage into it.
164    */
165   i915->draw = draw_create(&i915->base);
166   assert(i915->draw);
167   if (!debug_get_bool_option("I915_NO_VBUF", FALSE)) {
168      draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
169   } else {
170      draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
171   }
172
173   i915_init_surface_functions(i915);
174   i915_init_state_functions(i915);
175   i915_init_flush_functions(i915);
176   i915_init_resource_functions(i915);
177
178   draw_install_aaline_stage(i915->draw, &i915->base);
179   draw_install_aapoint_stage(i915->draw, &i915->base);
180
181   i915->dirty = ~0;
182   i915->hardware_dirty = ~0;
183
184   /* Batch stream debugging is a bit hacked up at the moment:
185    */
186   i915->batch = i915->iws->batchbuffer_create(i915->iws);
187
188   return &i915->base;
189}
190