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glsl/pp: Support GL_ARB_draw_buffers and GL_ARB_texture_rectangle.

This commit is contained in:
Michal Krol 2009-09-14 13:09:36 +02:00
parent cd26ccf6fe
commit 0f302b60fd
1 changed files with 49 additions and 34 deletions
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83
src/glsl/pp/sl_pp_extension.c
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@ -36,86 +36,101 @@ sl_pp_process_extension(struct sl_pp_context *context,
unsigned int last,
struct sl_pp_process_state *state)
{
int all_extensions = -1;
const char *extension_name = NULL;
const char *behavior = NULL;
int extensions[] = {
context->dict.all,
context->dict._GL_ARB_draw_buffers,
context->dict._GL_ARB_texture_rectangle,
-1
};
int extension_name = -1;
int *ext;
int behavior = -1;
struct sl_pp_token_info out;
all_extensions = sl_pp_context_add_unique_str(context, "all");
if (all_extensions == -1) {
return -1;
}
/* Grab the extension name. */
if (first < last && input[first].token == SL_PP_IDENTIFIER) {
extension_name = sl_pp_context_cstr(context, input[first].data.identifier);
extension_name = input[first].data.identifier;
first++;
}
if (!extension_name) {
if (extension_name == -1) {
strcpy(context->error_msg, "expected identifier after `#extension'");
return -1;
}
if (!strcmp(extension_name, "all")) {
out.data.extension = all_extensions;
} else {
out.data.extension = -1;
/* Make sure the extension is supported. */
out.data.extension = -1;
for (ext = extensions; *ext != -1; ext++) {
if (extension_name == *ext) {
out.data.extension = extension_name;
break;
}
}
/* Grab the colon separating the extension name and behavior. */
while (first < last && input[first].token == SL_PP_WHITESPACE) {
first++;
}
if (first < last && input[first].token == SL_PP_COLON) {
first++;
} else {
strcpy(context->error_msg, "expected `:' after extension name");
return -1;
}
while (first < last && input[first].token == SL_PP_WHITESPACE) {
first++;
}
/* Grab the behavior name. */
if (first < last && input[first].token == SL_PP_IDENTIFIER) {
behavior = sl_pp_context_cstr(context, input[first].data.identifier);
behavior = input[first].data.identifier;
first++;
}
if (!behavior) {
if (behavior == -1) {
strcpy(context->error_msg, "expected identifier after `:'");
return -1;
}
if (!strcmp(behavior, "require")) {
strcpy(context->error_msg, "unable to enable required extension");
return -1;
} else if (!strcmp(behavior, "enable")) {
if (out.data.extension == all_extensions) {
strcpy(context->error_msg, "unable to enable all extensions");
if (behavior == context->dict.require) {
if (out.data.extension == -1) {
strcpy(context->error_msg, "the required extension is not supported");
return -1;
} else {
}
if (out.data.extension == context->dict.all) {
strcpy(context->error_msg, "invalid behavior for `all' extension: `require'");
return -1;
}
out.token = SL_PP_EXTENSION_REQUIRE;
} else if (behavior == context->dict.enable) {
if (out.data.extension == -1) {
/* Warning: the extension cannot be enabled. */
return 0;
}
} else if (!strcmp(behavior, "warn")) {
if (out.data.extension == all_extensions) {
out.token = SL_PP_EXTENSION_WARN;
} else {
if (out.data.extension == context->dict.all) {
strcpy(context->error_msg, "invalid behavior for `all' extension: `enable'");
return -1;
}
out.token = SL_PP_EXTENSION_ENABLE;
} else if (behavior == context->dict.warn) {
if (out.data.extension == -1) {
/* Warning: the extension is not supported. */
return 0;
}
} else if (!strcmp(behavior, "disable")) {
if (out.data.extension == all_extensions) {
out.token = SL_PP_EXTENSION_DISABLE;
} else {
out.token = SL_PP_EXTENSION_WARN;
} else if (behavior == context->dict.disable) {
if (out.data.extension == -1) {
/* Warning: the extension is not supported. */
return 0;
}
out.token = SL_PP_EXTENSION_DISABLE;
} else {
strcpy(context->error_msg, "unrecognised behavior name");
return -1;
}
/* Grab the end of line. */
while (first < last && input[first].token == SL_PP_WHITESPACE) {
first++;
}
if (first < last) {
strcpy(context->error_msg, "expected end of line after behavior name");
return -1;