i915_context.c revision a6171a9dd99713266091982215bf1008c9ac8e64 
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_range_elements(struct pipe_context *pipe,
49                         struct pipe_resource *indexBuffer,
50                         unsigned indexSize,
51                         int indexBias,
52                         unsigned min_index,
53                         unsigned max_index,
54                         unsigned prim, unsigned start, unsigned count)
55{
56   struct i915_context *i915 = i915_context(pipe);
57   struct draw_context *draw = i915->draw;
58   unsigned i;
59
60   if (i915->dirty)
61      i915_update_derived(i915);
62
63   /*
64    * Map vertex buffers
65    */
66   for (i = 0; i < i915->num_vertex_buffers; i++) {
67      void *buf = i915_buffer(i915->vertex_buffer[i].buffer)->data;
68      draw_set_mapped_vertex_buffer(draw, i, buf);
69   }
70
71   /*
72    * Map index buffer, if present
73    */
74   if (indexBuffer) {
75      void *mapped_indexes = i915_buffer(indexBuffer)->data;
76      draw_set_mapped_element_buffer_range(draw, indexSize, indexBias,
77                                           min_index,
78                                           max_index,
79                                           mapped_indexes);
80   } else {
81      draw_set_mapped_element_buffer(draw, 0, 0, NULL);
82   }
83
84
85   draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
86                                   i915->current.constants[PIPE_SHADER_VERTEX],
87                                   (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
88                                      4 * sizeof(float)));
89
90   /*
91    * Do the drawing
92    */
93   draw_arrays(i915->draw, prim, start, count);
94
95   /*
96    * unmap vertex/index buffers
97    */
98   for (i = 0; i < i915->num_vertex_buffers; i++) {
99      draw_set_mapped_vertex_buffer(draw, i, NULL);
100   }
101
102   if (indexBuffer) {
103      draw_set_mapped_element_buffer(draw, 0, 0, NULL);
104   }
105}
106
107static void
108i915_draw_elements(struct pipe_context *pipe,
109                   struct pipe_resource *indexBuffer,
110                   unsigned indexSize, int indexBias,
111                   unsigned prim, unsigned start, unsigned count)
112{
113   i915_draw_range_elements(pipe, indexBuffer,
114                            indexSize, indexBias,
115                            0, 0xffffffff,
116                            prim, start, count);
117}
118
119static void
120i915_draw_arrays(struct pipe_context *pipe,
121                 unsigned prim, unsigned start, unsigned count)
122{
123   i915_draw_elements(pipe, NULL, 0, 0, prim, start, count);
124}
125
126
127
128
129/*
130 * Generic context functions
131 */
132
133
134static void i915_destroy(struct pipe_context *pipe)
135{
136   struct i915_context *i915 = i915_context(pipe);
137   int i;
138
139   draw_destroy(i915->draw);
140
141   if(i915->batch)
142      i915->iws->batchbuffer_destroy(i915->batch);
143
144   /* unbind framebuffer */
145   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
146      pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
147   }
148   pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
149
150   FREE(i915);
151}
152
153struct pipe_context *
154i915_create_context(struct pipe_screen *screen, void *priv)
155{
156   struct i915_context *i915;
157
158   i915 = CALLOC_STRUCT(i915_context);
159   if (i915 == NULL)
160      return NULL;
161
162   i915->iws = i915_screen(screen)->iws;
163   i915->base.winsys = NULL;
164   i915->base.screen = screen;
165   i915->base.priv = priv;
166
167   i915->base.destroy = i915_destroy;
168
169   i915->base.clear = i915_clear;
170
171   i915->base.draw_arrays = i915_draw_arrays;
172   i915->base.draw_elements = i915_draw_elements;
173   i915->base.draw_range_elements = i915_draw_range_elements;
174
175   /*
176    * Create drawing context and plug our rendering stage into it.
177    */
178   i915->draw = draw_create(&i915->base);
179   assert(i915->draw);
180   if (!debug_get_bool_option("I915_NO_VBUF", FALSE)) {
181      draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
182   } else {
183      draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
184   }
185
186   i915_init_surface_functions(i915);
187   i915_init_state_functions(i915);
188   i915_init_flush_functions(i915);
189   i915_init_resource_functions(i915);
190
191   draw_install_aaline_stage(i915->draw, &i915->base);
192   draw_install_aapoint_stage(i915->draw, &i915->base);
193
194   i915->dirty = ~0;
195   i915->hardware_dirty = ~0;
196
197   /* Batch stream debugging is a bit hacked up at the moment:
198    */
199   i915->batch = i915->iws->batchbuffer_create(i915->iws);
200
201   return &i915->base;
202}
203