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Diffstat (limited to 'src/mesa/shader/slang/slang_preprocess.c')
-rw-r--r--src/mesa/shader/slang/slang_preprocess.c160
1 files changed, 133 insertions, 27 deletions
diff --git a/src/mesa/shader/slang/slang_preprocess.c b/src/mesa/shader/slang/slang_preprocess.c
index 7d971627f5..89aaa3a621 100644
--- a/src/mesa/shader/slang/slang_preprocess.c
+++ b/src/mesa/shader/slang/slang_preprocess.c
@@ -1,8 +1,8 @@
/*
* Mesa 3-D graphics library
- * Version: 6.5.2
*
- * Copyright (C) 2005-2006 Brian Paul All Rights Reserved.
+ * Copyright (C) 2005-2008 Brian Paul All Rights Reserved.
+ * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -51,6 +51,9 @@ grammar_error_to_log (slang_info_log *log)
GLint pos;
grammar_get_last_error ((byte *) (buf), sizeof (buf), &pos);
+ if (buf[0] == 0) {
+ _mesa_snprintf(buf, sizeof(buf), "Preprocessor error");
+ }
slang_info_log_error (log, buf);
}
@@ -475,52 +478,112 @@ pp_cond_stack_reevaluate (pp_cond_stack *self)
self->top->effective = self->top->current && self->top[1].effective;
}
-/*
+
+/**
* Extension enables through #extension directive.
* NOTE: Currently, only enable/disable state is stored.
*/
-
typedef struct
{
- GLboolean MESA_shader_debug; /* GL_MESA_shader_debug enable */
- GLboolean ARB_texture_rectangle; /* GL_ARB_texture_rectangle enable */
+ GLboolean ARB_draw_buffers;
+ GLboolean ARB_texture_rectangle;
} pp_ext;
-/*
+
+/**
* Disable all extensions. Called at startup and on #extension all: disable.
*/
static GLvoid
-pp_ext_disable_all (pp_ext *self)
+pp_ext_disable_all(pp_ext *self)
{
- self->MESA_shader_debug = GL_FALSE;
+ _mesa_memset(self, 0, sizeof(self));
}
+
+/**
+ * Called during preprocessor initialization to set the initial enable/disable
+ * state of extensions.
+ */
static GLvoid
-pp_ext_init (pp_ext *self)
+pp_ext_init(pp_ext *self, const struct gl_extensions *extensions)
{
pp_ext_disable_all (self);
- self->ARB_texture_rectangle = GL_TRUE;
- /* Other initialization code goes here. */
+ self->ARB_draw_buffers = GL_TRUE;
+ if (extensions->NV_texture_rectangle)
+ self->ARB_texture_rectangle = GL_TRUE;
}
+/**
+ * Called in response to #extension directives to enable/disable
+ * the named extension.
+ */
static GLboolean
-pp_ext_set (pp_ext *self, const char *name, GLboolean enable)
+pp_ext_set(pp_ext *self, const char *name, GLboolean enable)
{
- if (_mesa_strcmp (name, "MESA_shader_debug") == 0)
- self->MESA_shader_debug = enable;
+ if (_mesa_strcmp (name, "GL_ARB_draw_buffers") == 0)
+ self->ARB_draw_buffers = enable;
else if (_mesa_strcmp (name, "GL_ARB_texture_rectangle") == 0)
self->ARB_texture_rectangle = enable;
- /* Next extension name tests go here. */
else
return GL_FALSE;
return GL_TRUE;
}
-/*
- * The state of preprocessor: current line, file and version number, list of all defined macros
- * and the #if/#endif context.
+
+static void
+pp_pragmas_init(struct gl_sl_pragmas *pragmas)
+{
+ pragmas->Optimize = GL_TRUE;
+ pragmas->Debug = GL_FALSE;
+}
+
+
+/**
+ * Called in response to #pragma. For example, "#pragma debug(on)" would
+ * call this function as pp_pragma("debug", "on").
+ * \return GL_TRUE if pragma is valid, GL_FALSE if invalid
*/
+static GLboolean
+pp_pragma(struct gl_sl_pragmas *pragmas, const char *pragma, const char *param)
+{
+#if 0
+ printf("#pragma %s %s\n", pragma, param);
+#endif
+ if (_mesa_strcmp(pragma, "optimize") == 0) {
+ if (!param)
+ return GL_FALSE; /* missing required param */
+ if (_mesa_strcmp(param, "on") == 0) {
+ pragmas->Optimize = GL_TRUE;
+ }
+ else if (_mesa_strcmp(param, "off") == 0) {
+ pragmas->Optimize = GL_FALSE;
+ }
+ else {
+ return GL_FALSE; /* invalid param */
+ }
+ }
+ else if (_mesa_strcmp(pragma, "debug") == 0) {
+ if (!param)
+ return GL_FALSE; /* missing required param */
+ if (_mesa_strcmp(param, "on") == 0) {
+ pragmas->Debug = GL_TRUE;
+ }
+ else if (_mesa_strcmp(param, "off") == 0) {
+ pragmas->Debug = GL_FALSE;
+ }
+ else {
+ return GL_FALSE; /* invalid param */
+ }
+ }
+ /* all other pragmas are silently ignored */
+ return GL_TRUE;
+}
+
+/**
+ * The state of preprocessor: current line, file and version number, list
+ * of all defined macros and the #if/#endif context.
+ */
typedef struct
{
GLint line;
@@ -533,7 +596,8 @@ typedef struct
} pp_state;
static GLvoid
-pp_state_init (pp_state *self, slang_info_log *elog)
+pp_state_init (pp_state *self, slang_info_log *elog,
+ const struct gl_extensions *extensions)
{
self->line = 0;
self->file = 1;
@@ -543,7 +607,7 @@ pp_state_init (pp_state *self, slang_info_log *elog)
self->version = 110;
#endif
pp_symbols_init (&self->symbols);
- pp_ext_init (&self->ext);
+ pp_ext_init (&self->ext, extensions);
self->elog = elog;
/* Initialize condition stack and create the global context. */
@@ -850,9 +914,16 @@ parse_if (slang_string *output, const byte *prod, GLuint *pi, GLint *result, pp_
#define BEHAVIOR_WARN 3
#define BEHAVIOR_DISABLE 4
+#define PRAGMA_NO_PARAM 0
+#define PRAGMA_PARAM 1
+
+
static GLboolean
-preprocess_source (slang_string *output, const char *source, grammar pid, grammar eid,
- slang_info_log *elog)
+preprocess_source (slang_string *output, const char *source,
+ grammar pid, grammar eid,
+ slang_info_log *elog,
+ const struct gl_extensions *extensions,
+ struct gl_sl_pragmas *pragmas)
{
static const char *predefined[] = {
"__FILE__",
@@ -873,7 +944,8 @@ preprocess_source (slang_string *output, const char *source, grammar pid, gramma
return GL_FALSE;
}
- pp_state_init (&state, elog);
+ pp_state_init (&state, elog, extensions);
+ pp_pragmas_init (pragmas);
/* add the predefined symbols to the symbol table */
for (i = 0; predefined[i]; i++) {
@@ -926,9 +998,11 @@ preprocess_source (slang_string *output, const char *source, grammar pid, gramma
else {
const char *id;
GLuint idlen;
+ GLubyte token;
i++;
- switch (prod[i++]) {
+ token = prod[i++];
+ switch (token) {
case TOKEN_END:
/* End of source string.
@@ -1145,6 +1219,25 @@ preprocess_source (slang_string *output, const char *source, grammar pid, gramma
}
break;
+ case TOKEN_PRAGMA:
+ {
+ GLint have_param;
+ const char *pragma, *param;
+
+ pragma = (const char *) (&prod[i]);
+ i += _mesa_strlen(pragma) + 1;
+ have_param = (prod[i++] == PRAGMA_PARAM);
+ if (have_param) {
+ param = (const char *) (&prod[i]);
+ i += _mesa_strlen(param) + 1;
+ }
+ else {
+ param = NULL;
+ }
+ pp_pragma(pragmas, pragma, param);
+ }
+ break;
+
case TOKEN_LINE:
id = (const char *) (&prod[i]);
i += _mesa_strlen (id) + 1;
@@ -1196,8 +1289,21 @@ error:
return GL_FALSE;
}
+
+/**
+ * Run preprocessor on source code.
+ * \param extensions indicates which GL extensions are enabled
+ * \param output the post-process results
+ * \param input the input text
+ * \param elog log to record warnings, errors
+ * \return GL_TRUE for success, GL_FALSE for error
+ */
GLboolean
-_slang_preprocess_directives (slang_string *output, const char *input, slang_info_log *elog)
+_slang_preprocess_directives(slang_string *output,
+ const char *input,
+ slang_info_log *elog,
+ const struct gl_extensions *extensions,
+ struct gl_sl_pragmas *pragmas)
{
grammar pid, eid;
GLboolean success;
@@ -1213,7 +1319,7 @@ _slang_preprocess_directives (slang_string *output, const char *input, slang_inf
grammar_destroy (pid);
return GL_FALSE;
}
- success = preprocess_source (output, input, pid, eid, elog);
+ success = preprocess_source (output, input, pid, eid, elog, extensions, pragmas);
grammar_destroy (eid);
grammar_destroy (pid);
return success;
generated by cgit v1.2.3 (git 2.39.1) at 2025-03-31 21:55:45 +0000