#include "glheader.h"
-#include "imports.h"
+
#include "context.h"
#include "extensions.h"
#include "macros.h"
struct gl_extensions _mesa_extension_override_enables;
struct gl_extensions _mesa_extension_override_disables;
-static char *extra_extensions = NULL;
+#define MAX_UNRECOGNIZED_EXTENSIONS 16
+static struct {
+ char *env;
+ const char *names[MAX_UNRECOGNIZED_EXTENSIONS];
+} unrecognized_extensions;
/**
* Given a member \c x of struct gl_extensions, return offset of
*/
#define o(x) offsetof(struct gl_extensions, x)
+static int
+extension_name_compare(const void *name, const void *elem)
+{
+ const struct mesa_extension *entry = elem;
+ return strcmp(name, entry->name);
+}
+
/**
* Given an extension name, lookup up the corresponding member of struct
* gl_extensions and return that member's index. If the name is
static int
name_to_index(const char* name)
{
- unsigned i;
+ const struct mesa_extension *entry;
- if (name == 0)
+ if (!name)
return -1;
- for (i = 0; i < MESA_EXTENSION_COUNT; ++i) {
- if (strcmp(name, _mesa_extension_table[i].name) == 0)
- return i;
- }
+ entry = bsearch(name,
+ _mesa_extension_table, MESA_EXTENSION_COUNT,
+ sizeof(_mesa_extension_table[0]),
+ extension_name_compare);
+
+ if (entry)
+ return entry - _mesa_extension_table;
return -1;
}
ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
ctx->Extensions.ARB_texture_filter_anisotropic = GL_TRUE;
-#ifdef TEXTURE_FLOAT_ENABLED
ctx->Extensions.ARB_texture_float = GL_TRUE;
-#endif
ctx->Extensions.ARB_texture_mirror_clamp_to_edge = GL_TRUE;
ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
ctx->Extensions.ARB_texture_rg = GL_TRUE;
ctx->Extensions.ATI_texture_compression_3dc = GL_TRUE;
ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;
ctx->Extensions.ATI_texture_mirror_once = GL_TRUE;
- ctx->Extensions.ATI_separate_stencil = GL_TRUE;
ctx->Extensions.EXT_blend_color = GL_TRUE;
ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
return offset;
}
-/**
- * The unrecognized extensions from \c MESA_EXTENSION_OVERRIDE.
- * Returns \c NULL if empty.
- */
-static const char *
-get_extension_override( struct gl_context *ctx )
-{
- if (extra_extensions)
- _mesa_problem(ctx, "Trying to enable unknown extensions: %s",
- extra_extensions);
-
- return extra_extensions;
-}
-
/**
- * \brief Free extra_extensions string
+ * \brief Free string pointed by unrecognized_extensions
*
- * These strings are allocated early during the first context creation by
+ * This string is allocated early during the first context creation by
* _mesa_one_time_init_extension_overrides.
*/
static void
free_unknown_extensions_strings(void)
{
- free(extra_extensions);
+ free(unrecognized_extensions.env);
+ for (int i = 0; i < MAX_UNRECOGNIZED_EXTENSIONS; ++i)
+ unrecognized_extensions.names[i] = NULL;
}
const char *env_const = getenv("MESA_EXTENSION_OVERRIDE");
char *env;
char *ext;
- int len;
size_t offset;
-
- atexit(free_unknown_extensions_strings);
+ unsigned unknown_ext = 0;
memset(&_mesa_extension_override_enables, 0, sizeof(struct gl_extensions));
memset(&_mesa_extension_override_disables, 0, sizeof(struct gl_extensions));
return;
}
- /* extra_exts: List of unrecognized extensions. */
- extra_extensions = calloc(ALIGN(strlen(env_const) + 2, 4), sizeof(char));
-
/* Copy env_const because strtok() is destructive. */
env = strdup(env_const);
- if (env == NULL ||
- extra_extensions == NULL) {
- free(env);
- free(extra_extensions);
+ if (env == NULL)
return;
- }
for (ext = strtok(env, " "); ext != NULL; ext = strtok(NULL, " ")) {
int enable;
recognized = false;
if (!recognized && enable) {
- strcat(extra_extensions, ext);
- strcat(extra_extensions, " ");
+ if (unknown_ext >= MAX_UNRECOGNIZED_EXTENSIONS) {
+ static bool warned;
+
+ if (!warned) {
+ warned = true;
+ _mesa_problem(NULL, "Trying to enable too many unknown extension. "
+ "Only the first %d will be honoured",
+ MAX_UNRECOGNIZED_EXTENSIONS);
+ }
+ } else {
+ unrecognized_extensions.names[unknown_ext] = ext;
+ unknown_ext++;
+ _mesa_problem(NULL, "Trying to enable unknown extension: %s", ext);
+ }
}
}
- free(env);
-
- /* Remove trailing space, and free if unused. */
- len = strlen(extra_extensions);
- if (len == 0) {
- free(extra_extensions);
- extra_extensions = NULL;
- } else if (extra_extensions[len - 1] == ' ') {
- extra_extensions[len - 1] = '\0';
+ if (!unknown_ext) {
+ free(env);
+ } else {
+ unrecognized_extensions.env = env;
+ atexit(free_unknown_extensions_strings);
}
}
return (ctx->Version >= ext->version[ctx->API]) && base[ext->offset];
}
+/**
+ * Compare two entries of the extensions table. Sorts first by year,
+ * then by name.
+ *
+ * Arguments are indices into _mesa_extension_table.
+ */
+static int
+extension_compare(const void *p1, const void *p2)
+{
+ extension_index i1 = * (const extension_index *) p1;
+ extension_index i2 = * (const extension_index *) p2;
+ const struct mesa_extension *e1 = &_mesa_extension_table[i1];
+ const struct mesa_extension *e2 = &_mesa_extension_table[i2];
+ int res;
+
+ res = (int)e1->year - (int)e2->year;
+
+ if (res == 0) {
+ res = strcmp(e1->name, e2->name);
+ }
+
+ return res;
+}
+
/**
* Construct the GL_EXTENSIONS string. Called the first time that
unsigned count;
/* Indices of the extensions sorted by year */
extension_index extension_indices[MESA_EXTENSION_COUNT];
- /* String of extra extensions. */
- const char *extra_extensions = get_extension_override(ctx);
unsigned k;
unsigned j;
unsigned maxYear = ~0;
if (i->year <= maxYear &&
_mesa_extension_supported(ctx, k)) {
- length += strlen(i->name) + 1; /* +1 for space */
- extension_indices[count++] = k;
+ length += strlen(i->name) + 1; /* +1 for space */
+ ++count;
}
}
- if (extra_extensions != NULL)
- length += 1 + strlen(extra_extensions); /* +1 for space */
+ for (k = 0; k < MAX_UNRECOGNIZED_EXTENSIONS; k++)
+ if (unrecognized_extensions.names[k])
+ length += 1 + strlen(unrecognized_extensions.names[k]); /* +1 for space */
exts = calloc(ALIGN(length + 1, 4), sizeof(char));
if (exts == NULL) {
return NULL;
}
+ /* Sort extensions in chronological order because idTech 2/3 games
+ * (e.g., Quake3 demo) store the extension list in a fixed size buffer.
+ * Some cases truncate, while others overflow the buffer. Resulting in
+ * misrendering and crashes, respectively.
+ * Address the former here, while the latter will be addressed by setting
+ * the MESA_EXTENSION_MAX_YEAR environment variable.
+ */
+ j = 0;
+ for (k = 0; k < MESA_EXTENSION_COUNT; ++k) {
+ if (_mesa_extension_table[k].year <= maxYear &&
+ _mesa_extension_supported(ctx, k)) {
+ extension_indices[j++] = k;
+ }
+ }
+ assert(j == count);
+ qsort(extension_indices, count,
+ sizeof *extension_indices, extension_compare);
+
/* Build the extension string.*/
for (j = 0; j < count; ++j) {
const struct mesa_extension *i = &_mesa_extension_table[extension_indices[j]];
strcat(exts, i->name);
strcat(exts, " ");
}
- if (extra_extensions != 0) {
- strcat(exts, extra_extensions);
+ for (j = 0; j < MAX_UNRECOGNIZED_EXTENSIONS; j++) {
+ if (unrecognized_extensions.names[j]) {
+ strcat(exts, unrecognized_extensions.names[j]);
+ strcat(exts, " ");
+ }
}
return (GLubyte *) exts;
if (_mesa_extension_supported(ctx, k))
ctx->Extensions.Count++;
}
+
+ for (k = 0; k < MAX_UNRECOGNIZED_EXTENSIONS; ++k) {
+ if (unrecognized_extensions.names[k])
+ ctx->Extensions.Count++;
+ }
return ctx->Extensions.Count;
}
}
}
+ for (i = 0; i < MAX_UNRECOGNIZED_EXTENSIONS; ++i) {
+ if (unrecognized_extensions.names[i]) {
+ if (n == index)
+ return (const GLubyte*) unrecognized_extensions.names[i];
+ else
+ ++n;
+ }
+ }
return NULL;
}
projects / mesa.git / blobdiff