r300_context.c revision 4a49301e 
1/*
2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
22
23#include "draw/draw_context.h"
24
25#include "tgsi/tgsi_scan.h"
26
27#include "util/u_hash_table.h"
28#include "util/u_memory.h"
29#include "util/u_simple_list.h"
30
31#include "r300_clear.h"
32#include "r300_context.h"
33#include "r300_flush.h"
34#include "r300_query.h"
35#include "r300_render.h"
36#include "r300_screen.h"
37#include "r300_state_derived.h"
38#include "r300_state_invariant.h"
39#include "r300_winsys.h"
40
41static enum pipe_error r300_clear_hash_table(void* key, void* value,
42                                             void* data)
43{
44    FREE(key);
45    FREE(value);
46    return PIPE_OK;
47}
48
49static void r300_destroy_context(struct pipe_context* context)
50{
51    struct r300_context* r300 = r300_context(context);
52    struct r300_query* query, * temp;
53
54    util_hash_table_foreach(r300->shader_hash_table, r300_clear_hash_table,
55        NULL);
56    util_hash_table_destroy(r300->shader_hash_table);
57
58    draw_destroy(r300->draw);
59
60    /* Free the OQ BO. */
61    context->screen->buffer_destroy(r300->oqbo);
62
63    /* If there are any queries pending or not destroyed, remove them now. */
64    foreach_s(query, temp, &r300->query_list) {
65        remove_from_list(query);
66        FREE(query);
67    }
68
69    FREE(r300->blend_color_state);
70    FREE(r300->rs_block);
71    FREE(r300->scissor_state);
72    FREE(r300->viewport_state);
73    FREE(r300);
74}
75
76static unsigned int
77r300_is_texture_referenced(struct pipe_context *pipe,
78                           struct pipe_texture *texture,
79                           unsigned face, unsigned level)
80{
81    struct pipe_buffer* buf = 0;
82
83    r300_get_texture_buffer(texture, &buf, NULL);
84
85    return pipe->is_buffer_referenced(pipe, buf);
86}
87
88static unsigned int
89r300_is_buffer_referenced(struct pipe_context *pipe,
90                          struct pipe_buffer *buf)
91{
92    /* This only checks to see whether actual hardware buffers are
93     * referenced. Since we use managed BOs and transfers, it's actually not
94     * possible for pipe_buffers to ever reference the actual hardware, so
95     * buffers are never referenced. */
96    return 0;
97}
98
99static void r300_flush_cb(void *data)
100{
101    struct r300_context* const cs_context_copy = data;
102
103    cs_context_copy->context.flush(&cs_context_copy->context, 0, NULL);
104}
105
106struct pipe_context* r300_create_context(struct pipe_screen* screen,
107                                         struct r300_winsys* r300_winsys)
108{
109    struct r300_context* r300 = CALLOC_STRUCT(r300_context);
110    struct r300_screen* r300screen = r300_screen(screen);
111
112    if (!r300)
113        return NULL;
114
115    r300->winsys = r300_winsys;
116
117    r300->context.winsys = (struct pipe_winsys*)r300_winsys;
118    r300->context.screen = screen;
119
120    r300_init_debug(r300);
121
122    r300->context.destroy = r300_destroy_context;
123
124    r300->context.clear = r300_clear;
125
126    if (r300screen->caps->has_tcl)
127    {
128        r300->context.draw_arrays = r300_draw_arrays;
129        r300->context.draw_elements = r300_draw_elements;
130        r300->context.draw_range_elements = r300_draw_range_elements;
131    }
132    else
133    {
134        assert(0);
135    }
136
137    r300->context.is_texture_referenced = r300_is_texture_referenced;
138    r300->context.is_buffer_referenced = r300_is_buffer_referenced;
139
140    r300->shader_hash_table = util_hash_table_create(r300_shader_key_hash,
141        r300_shader_key_compare);
142
143    r300->blend_color_state = CALLOC_STRUCT(r300_blend_color_state);
144    r300->rs_block = CALLOC_STRUCT(r300_rs_block);
145    r300->scissor_state = CALLOC_STRUCT(r300_scissor_state);
146    r300->viewport_state = CALLOC_STRUCT(r300_viewport_state);
147
148    /* Create a Draw. This is used for vert collation and SW TCL. */
149    r300->draw = draw_create();
150    /* Enable our renderer. */
151    draw_set_rasterize_stage(r300->draw, r300_draw_stage(r300));
152    /* Disable Draw's clipping if TCL is present. */
153    draw_set_driver_clipping(r300->draw, r300_screen(screen)->caps->has_tcl);
154    /* Force Draw to never do viewport transform, since (again) we can do
155     * transform in hardware, always. */
156    draw_set_viewport_state(r300->draw, &r300_viewport_identity);
157
158    /* Open up the OQ BO. */
159    r300->oqbo = screen->buffer_create(screen, 4096,
160            PIPE_BUFFER_USAGE_VERTEX, 4096);
161    make_empty_list(&r300->query_list);
162
163    r300_init_flush_functions(r300);
164
165    r300_init_query_functions(r300);
166
167    /* r300_init_surface_functions(r300); */
168
169    r300_init_state_functions(r300);
170
171    r300_emit_invariant_state(r300);
172
173    r300->winsys->set_flush_cb(r300->winsys, r300_flush_cb, r300);
174    r300->dirty_state = R300_NEW_KITCHEN_SINK;
175    r300->dirty_hw++;
176    return &r300->context;
177}
178