r300_debug.c revision 1f630fa0167ed799556a764178772c096a3ddeba 
1/*
2 * Copyright 2009 Nicolai Haehnle <nhaehnle@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 "r300_context.h"
24
25#include <ctype.h>
26
27
28struct debug_option {
29    const char * name;
30    unsigned flag;
31    const char * description;
32};
33
34static struct debug_option debug_options[] = {
35    { "help", DBG_HELP, "Helpful meta-information about the driver" },
36    { "fp", DBG_FP, "Fragment program handling" },
37    { "vp", DBG_VP, "Vertex program handling" },
38    { "cs", DBG_CS, "Command submissions" },
39    { "draw", DBG_DRAW, "Draw and emit" },
40    { "tex", DBG_TEX, "Textures" },
41    { "fall", DBG_FALL, "Fallbacks" },
42
43    { "all", ~0, "Convenience option that enables all debug flags" },
44
45    /* must be last */
46    { 0, 0, 0 }
47};
48
49void r300_init_debug(struct r300_context * ctx)
50{
51    const char * options = debug_get_option("RADEON_DEBUG", 0);
52    boolean printhint = FALSE;
53    size_t length;
54    struct debug_option * opt;
55
56    if (options) {
57        while(*options) {
58            if (*options == ' ' || *options == ',') {
59                options++;
60                continue;
61            }
62
63            length = strcspn(options, " ,");
64
65            for(opt = debug_options; opt->name; ++opt) {
66                if (!strncmp(options, opt->name, length)) {
67                    ctx->debug |= opt->flag;
68                    break;
69                }
70            }
71
72            if (!opt->name) {
73                debug_printf("Unknown debug option: %s\n", options);
74                printhint = TRUE;
75            }
76
77            options += length;
78        }
79
80        if (!ctx->debug)
81            printhint = TRUE;
82    }
83
84    if (printhint || ctx->debug & DBG_HELP) {
85        debug_printf("You can enable debug output by setting the RADEON_DEBUG environment variable\n"
86                     "to a comma-separated list of debug options. Available options are:\n");
87        for(opt = debug_options; opt->name; ++opt) {
88            debug_printf("    %s: %s\n", opt->name, opt->description);
89        }
90    }
91}
92