Merge remote-tracking branch 'origin/released'

* origin/released:
  libxtrans xwininfo libX11 libXau libXmu libXdmcp mesa mkfontscale xkeyboard-config git update 14 jan 2013

Conflicts:
	mesalib/src/glsl/glcpp/.gitignore

6 files changed, 134 insertions, 84 deletions

diff --git a/mesalib/src/glsl/glcpp/.gitignore b/mesalib/src/glsl/glcpp/.gitignore
index fc93edb36..9f7e0cc3e 100755
--- a/mesalib/src/glsl/glcpp/.gitignore
+++ b/mesalib/src/glsl/glcpp/.gitignore
@@ -3,3 +3,4 @@ glcpp-lex.c
 glcpp-parse.output

 glcpp-parse.c

 glcpp-parse.h

+tests/*.out

diff --git a/mesalib/src/glsl/glcpp/glcpp-lex.l b/mesalib/src/glsl/glcpp/glcpp-lex.l
index fd28711d1..a029f6203 100644
--- a/mesalib/src/glsl/glcpp/glcpp-lex.l
+++ b/mesalib/src/glsl/glcpp/glcpp-lex.l
@@ -260,6 +260,8 @@ HEXADECIMAL_INTEGER	0[xX][0-9a-fA-F]+[uU]?
 }
 
 "##" {
+	if (parser->is_gles)
+		glcpp_error(yylloc, yyextra, "Token pasting (##) is illegal in GLES");
 	return PASTE;
 }
 
diff --git a/mesalib/src/glsl/glcpp/glcpp-parse.y b/mesalib/src/glsl/glcpp/glcpp-parse.y
index 380a1d99c..8fba923a2 100644
--- a/mesalib/src/glsl/glcpp/glcpp-parse.y
+++ b/mesalib/src/glsl/glcpp/glcpp-parse.y
@@ -363,6 +363,8 @@ integer_constant:
 expression:
 	integer_constant
 |	IDENTIFIER {
+		if (parser->is_gles)
+			glcpp_error(& @1, parser, "undefined macro %s in expression (illegal in GLES)", $1);
 		$$ = 0;
 	}
 |	expression OR expression {
@@ -1179,15 +1181,18 @@ glcpp_parser_create (const struct gl_extensions *extensions, int api)
 	parser->has_new_source_number = 0;
 	parser->new_source_number = 0;
 
+	parser->is_gles = false;
+
 	/* Add pre-defined macros. */
 	if (extensions != NULL) {
 	   if (extensions->OES_EGL_image_external)
 	      add_builtin_define(parser, "GL_OES_EGL_image_external", 1);
 	}
 
-	if (api == API_OPENGLES2)
+	if (api == API_OPENGLES2) {
+		parser->is_gles = true;
 		add_builtin_define(parser, "GL_ES", 1);
-	else {
+	} else {
 	   add_builtin_define(parser, "GL_ARB_draw_buffers", 1);
 	   add_builtin_define(parser, "GL_ARB_texture_rectangle", 1);
 
@@ -2026,11 +2031,6 @@ static void
 _glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, intmax_t version,
                                          const char *es_identifier)
 {
-	/* Note: We assume that if any identifier is present, it means ES.
-         * The GLSL parser will double-check that the identifier is correct.
-	 */
-	bool is_es = es_identifier != NULL;
-
 	macro_t *macro = hash_table_find (parser->defines, "__VERSION__");
 	if (macro) {
 		hash_table_remove (parser->defines, "__VERSION__");
@@ -2038,17 +2038,23 @@ _glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, intmax_t versio
 	}
 	add_builtin_define (parser, "__VERSION__", version);
 
-	if (version == 100)
-		is_es = true;
-	if (is_es)
+	/* If we didn't have a GLES context to begin with, (indicated
+	 * by parser->api), then the version declaration here might
+	 * indicate GLES. */
+	if (! parser->is_gles &&
+	    (version == 100 ||
+	     (es_identifier && (strcmp(es_identifier, "es") == 0))))
+	{
+		parser->is_gles = true;
 		add_builtin_define (parser, "GL_ES", 1);
+	}
 
 	/* Currently, all ES2/ES3 implementations support highp in the
 	 * fragment shader, so we always define this macro in ES2/ES3.
 	 * If we ever get a driver that doesn't support highp, we'll
 	 * need to add a flag to the gl_context and check that here.
 	 */
-	if (version >= 130 || is_es)
+	if (version >= 130 || parser->is_gles)
 		add_builtin_define (parser, "GL_FRAGMENT_PRECISION_HIGH", 1);
 
 	ralloc_asprintf_rewrite_tail (&parser->output, &parser->output_length,
diff --git a/mesalib/src/glsl/glcpp/glcpp.c b/mesalib/src/glsl/glcpp/glcpp.c
index bef9fd08e..13a32fd7d 100644
--- a/mesalib/src/glsl/glcpp/glcpp.c
+++ b/mesalib/src/glsl/glcpp/glcpp.c
@@ -24,6 +24,8 @@
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
+#include <getopt.h>
+
 #include "glcpp.h"
 #include "main/mtypes.h"
 #include "main/shaderobj.h"
@@ -102,6 +104,37 @@ load_text_file(void *ctx, const char *filename)
 	return text;
 }
 
+/* Initialize only those things that glcpp cares about.
+ */
+static void
+init_fake_gl_context (struct gl_context *gl_ctx)
+{
+	gl_ctx->API = API_OPENGL_COMPAT;
+	gl_ctx->Const.DisableGLSLLineContinuations = false;
+}
+
+static void
+usage (void)
+{
+	fprintf (stderr,
+		 "Usage: glcpp [OPTIONS] [--] [<filename>]\n"
+		 "\n"
+		 "Pre-process the given filename (stdin if no filename given).\n"
+		 "The following options are supported:\n"
+		 "    --disable-line-continuations      Do not interpret lines ending with a\n"
+		 "                                      backslash ('\\') as a line continuation.\n");
+}
+
+enum {
+	DISABLE_LINE_CONTINUATIONS_OPT = CHAR_MAX + 1
+};
+
+const static struct option
+long_options[] = {
+	{"disable-line-continuations", no_argument, 0, DISABLE_LINE_CONTINUATIONS_OPT },
+	{0,                            0,           0, 0 }
+};
+
 int
 main (int argc, char *argv[])
 {
@@ -110,16 +143,36 @@ main (int argc, char *argv[])
 	char *info_log = ralloc_strdup(ctx, "");
 	const char *shader;
 	int ret;
+	struct gl_context gl_ctx;
+	int c;
+
+	init_fake_gl_context (&gl_ctx);
+
+	while ((c = getopt_long(argc, argv, "", long_options, NULL)) != -1) {
+		switch (c) {
+		case DISABLE_LINE_CONTINUATIONS_OPT:
+			gl_ctx.Const.DisableGLSLLineContinuations = true;
+			break;
+		default:
+			usage ();
+			exit (1);
+		}
+	}
 
-	if (argc) {
-		filename = argv[1];
+	if (optind + 1 < argc) {
+		printf ("Unexpected argument: %s\n", argv[optind+1]);
+		usage ();
+		exit (1);
+	}
+	if (optind < argc) {
+		filename = argv[optind];
 	}
 
 	shader = load_text_file (ctx, filename);
 	if (shader == NULL)
 	   return 1;
 
-	ret = glcpp_preprocess(ctx, &shader, &info_log, NULL, API_OPENGL_COMPAT);
+	ret = glcpp_preprocess(ctx, &shader, &info_log, NULL, &gl_ctx);
 
 	printf("%s", shader);
 	fprintf(stderr, "%s", info_log);
diff --git a/mesalib/src/glsl/glcpp/glcpp.h b/mesalib/src/glsl/glcpp/glcpp.h
index a459289b2..8aaa551d1 100644
--- a/mesalib/src/glsl/glcpp/glcpp.h
+++ b/mesalib/src/glsl/glcpp/glcpp.h
@@ -27,6 +27,8 @@
 #include <stdint.h>
 #include <stdbool.h>
 
+#include "main/mtypes.h"
+
 #include "../ralloc.h"
 
 #include "program/hash_table.h"
@@ -182,6 +184,7 @@ struct glcpp_parser {
 	int new_line_number;
 	bool has_new_source_number;
 	int new_source_number;
+	bool is_gles;
 };
 
 struct gl_extensions;
@@ -197,7 +200,7 @@ glcpp_parser_destroy (glcpp_parser_t *parser);
 
 int
 glcpp_preprocess(void *ralloc_ctx, const char **shader, char **info_log,
-	   const struct gl_extensions *extensions, int api);
+	   const struct gl_extensions *extensions, struct gl_context *g_ctx);
 
 /* Functions for writing to the info log */
 
diff --git a/mesalib/src/glsl/glcpp/pp.c b/mesalib/src/glsl/glcpp/pp.c
index 11b29417b..789f7f941 100644
--- a/mesalib/src/glsl/glcpp/pp.c
+++ b/mesalib/src/glsl/glcpp/pp.c
@@ -70,92 +70,77 @@ glcpp_warning (YYLTYPE *locp, glcpp_parser_t *parser, const char *fmt, ...)
 				     &parser->info_log_length, "\n");
 }
 
-/* Searches backwards for '^ *#' from a given starting point. */
-static int
-in_directive(const char *shader, const char *ptr)
-{
-	assert(ptr >= shader);
-
-	/* Search backwards for '#'. If we find a \n first, it doesn't count */
-	for (; ptr >= shader && *ptr != '#'; ptr--) {
-		if (*ptr == '\n')
-			return 0;
-	}
-	if (ptr >= shader) {
-		/* Found '#'...look for spaces preceded by a newline */
-		for (ptr--; ptr >= shader && isblank(*ptr); ptr--);
-		// FIXME: I don't think the '\n' case can happen
-		if (ptr < shader || *ptr == '\n')
-			return 1;
-	}
-	return 0;
-}
-
-/* Remove any line continuation characters in preprocessing directives.
- * However, ignore any in GLSL code, as "There is no line continuation
- * character" (1.30 page 9) in GLSL.
+/* Remove any line continuation characters in the shader, (whether in
+ * preprocessing directives or in GLSL code).
  */
 static char *
 remove_line_continuations(glcpp_parser_t *ctx, const char *shader)
 {
-	int in_continued_line = 0;
-	int extra_newlines = 0;
 	char *clean = ralloc_strdup(ctx, "");
-	const char *search_start = shader;
-	const char *newline;
-	while ((newline = strchr(search_start, '\n')) != NULL) {
-		const char *backslash = NULL;
-
-		/* # of characters preceding the newline. */
-		int n = newline - shader;
-
-		/* Find the preceding '\', if it exists */
-		if (n >= 1 && newline[-1] == '\\')
-			backslash = newline - 1;
-		else if (n >= 2 && newline[-1] == '\r' && newline[-2] == '\\')
-			backslash = newline - 2;
-
-		/* Double backslashes don't count (the backslash is escaped) */
-		if (backslash != NULL && backslash[-1] == '\\') {
-			backslash = NULL;
-		}
-
-		if (backslash != NULL) {
-			/* We found a line continuation, but do we care? */
-			if (!in_continued_line) {
-				if (in_directive(shader, backslash)) {
-					in_continued_line = 1;
-					extra_newlines = 0;
-				}
-			}
-			if (in_continued_line) {
-				/* Copy everything before the \ */
-				ralloc_strncat(&clean, shader, backslash - shader);
+	const char *backslash, *newline, *search_start;
+	int collapsed_newlines = 0;
+
+	search_start = shader;
+
+	while (true) {
+		backslash = strchr(search_start, '\\');
+
+		/* If we have previously collapsed any line-continuations,
+		 * then we want to insert additional newlines at the next
+		 * occurrence of a newline character to avoid changing any
+		 * line numbers.
+		 */
+		if (collapsed_newlines) {
+			newline = strchr(search_start, '\n');
+			if (newline &&
+			    (backslash == NULL || newline < backslash))
+			{
+				ralloc_strncat(&clean, shader,
+					       newline - shader + 1);
+				while (collapsed_newlines--)
+					ralloc_strcat(&clean, "\n");
 				shader = newline + 1;
-				extra_newlines++;
+				search_start = shader;
 			}
-		} else if (in_continued_line) {
-			/* Copy everything up to and including the \n */
-			ralloc_strncat(&clean, shader, newline - shader + 1);
-			shader = newline + 1;
-			/* Output extra newlines to make line numbers match */
-			for (; extra_newlines > 0; extra_newlines--)
-				ralloc_strcat(&clean, "\n");
-			in_continued_line = 0;
 		}
-		search_start = newline + 1;
+
+		search_start = backslash + 1;
+
+		if (backslash == NULL)
+			break;
+
+		/* At each line continuation, (backslash followed by a
+		 * newline), copy all preceding text to the output, then
+		 * advance the shader pointer to the character after the
+		 * newline.
+		 */
+		if (backslash[1] == '\n' ||
+		    (backslash[1] == '\r' && backslash[2] == '\n'))
+		{
+			collapsed_newlines++;
+			ralloc_strncat(&clean, shader, backslash - shader);
+			if (backslash[1] == '\n')
+				shader = backslash + 2;
+			else
+				shader = backslash + 3;
+			search_start = shader;
+		}
 	}
+
 	ralloc_strcat(&clean, shader);
+
 	return clean;
 }
 
 int
 glcpp_preprocess(void *ralloc_ctx, const char **shader, char **info_log,
-	   const struct gl_extensions *extensions, int api)
+	   const struct gl_extensions *extensions, struct gl_context *gl_ctx)
 {
 	int errors;
-	glcpp_parser_t *parser = glcpp_parser_create (extensions, api);
-	*shader = remove_line_continuations(parser, *shader);
+	glcpp_parser_t *parser = glcpp_parser_create (extensions, gl_ctx->API);
+
+	if (! gl_ctx->Const.DisableGLSLLineContinuations)
+		*shader = remove_line_continuations(parser, *shader);
 
 	glcpp_lex_set_source_string (parser, *shader);