add __fixed_input and __fixed_output qualifier support;

fix for_init_statement output;

diff --git a/src/mesa/shader/slang/library/slang_shader.syn b/src/mesa/shader/slang/library/slang_shader.syn
index 4aa0339..65d7fe3 100644 (file)
--- a/src/mesa/shader/slang/library/slang_shader.syn
+++ b/src/mesa/shader/slang/library/slang_shader.syn
@@ -2,7 +2,7 @@
  * Mesa 3-D graphics library\r
  * Version:  6.2\r
  *\r
- * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.\r
+ * Copyright (C) 2004-2005  Brian Paul   All Rights Reserved.\r
  *\r
  * Permission is hereby granted, free of charge, to any person obtaining a\r
  * copy of this software and associated documentation files (the "Software"),\r
@@ -24,7 +24,7 @@
 \r
 /*\r
  * \file slang_shader.syn\r
- * slang shader syntax\r
+ * slang vertex/fragment shader syntax\r
  * \author Michal Krol\r
  */\r
 \r
@@ -49,7 +49,7 @@
 .syntax translation_unit;\r
 \r
 /* revision number - increment after each change affecting emitted output */\r
-.emtcode REVISION                                   1\r
+.emtcode REVISION                                   2\r
 \r
 /* external declaration */\r
 .emtcode EXTERNAL_NULL                              0\r
@@ -116,6 +116,8 @@
 .emtcode TYPE_QUALIFIER_ATTRIBUTE                   2\r
 .emtcode TYPE_QUALIFIER_VARYING                     3\r
 .emtcode TYPE_QUALIFIER_UNIFORM                     4\r
+.emtcode TYPE_QUALIFIER_FIXEDOUTPUT                 5\r
+.emtcode TYPE_QUALIFIER_FIXEDINPUT                  6\r
 \r
 /* type specifier */\r
 .emtcode TYPE_SPECIFIER_VOID                        0\r
@@ -237,7 +239,7 @@
 /* the implementation will set it to 1 when compiling internal built-in shaders */\r
 .regbyte parsing_builtin                            0\r
 \r
-/* holds the type of shader that is being parsed, possible values are listed below */\r
+/* holds the type of the shader being parsed; possible values are listed below */\r
 /*   FRAGMENT_SHADER            1 */\r
 /*   VERTEX_SHADER              2 */\r
 /* shader type is set by the caller before parsing */\r
@@ -846,12 +848,19 @@ fully_specified_type_2
                                           | "attribute" // Vertex only.\r
                                           | "varying"\r
                                           | "uniform"\r
+                                                                                 | "__fixed_output"\r
+                                                                                 | "__fixed_input"\r
+\r
+note: this is an extension to the standard language specification - normally slang disallows\r
+      __fixed_output and __fixed_input type qualifiers\r
 */\r
 type_qualifier\r
     "const" .emit TYPE_QUALIFIER_CONST .or\r
     .if (shader_type == 2) "attribute" .emit TYPE_QUALIFIER_ATTRIBUTE .or\r
     "varying" .emit TYPE_QUALIFIER_VARYING .or\r
-    "uniform" .emit TYPE_QUALIFIER_UNIFORM;\r
+    "uniform" .emit TYPE_QUALIFIER_UNIFORM .or\r
+       .if (parsing_builtin != 0) "__fixed_output" .emit TYPE_QUALIFIER_FIXEDOUTPUT .or\r
+       .if (parsing_builtin != 0) "__fixed_input" .emit TYPE_QUALIFIER_FIXEDINPUT;\r
 \r
 /*\r
     <type_specifier>                    ::= "void"\r
@@ -1110,7 +1119,7 @@ iteration_statement_3
                                           | <declaration_statement>\r
 */\r
 for_init_statement\r
-    expression_statement .or declaration_statement;\r
+    expression_statement .emit OP_EXPRESSION .or declaration_statement .emit OP_DECLARE;\r
 \r
 /*\r
     <conditionopt>                      ::= <condition>\r

diff --git a/src/mesa/shader/slang/library/slang_shader_syn.h b/src/mesa/shader/slang/library/slang_shader_syn.h
index d3415cf..dece1e9 100644 (file)
--- a/src/mesa/shader/slang/library/slang_shader_syn.h
+++ b/src/mesa/shader/slang/library/slang_shader_syn.h
@@ -1,5 +1,5 @@
 ".syntax translation_unit;\n"\r
-".emtcode REVISION 1\n"\r
+".emtcode REVISION 2\n"\r
 ".emtcode EXTERNAL_NULL 0\n"\r
 ".emtcode EXTERNAL_FUNCTION_DEFINITION 1\n"\r
 ".emtcode EXTERNAL_DECLARATION 2\n"\r
@@ -39,6 +39,8 @@
 ".emtcode TYPE_QUALIFIER_ATTRIBUTE 2\n"\r
 ".emtcode TYPE_QUALIFIER_VARYING 3\n"\r
 ".emtcode TYPE_QUALIFIER_UNIFORM 4\n"\r
+".emtcode TYPE_QUALIFIER_FIXEDOUTPUT 5\n"\r
+".emtcode TYPE_QUALIFIER_FIXEDINPUT 6\n"\r
 ".emtcode TYPE_SPECIFIER_VOID 0\n"\r
 ".emtcode TYPE_SPECIFIER_BOOL 1\n"\r
 ".emtcode TYPE_SPECIFIER_BVEC2 2\n"\r
@@ -406,7 +408,9 @@
 " \"const\" .emit TYPE_QUALIFIER_CONST .or\n"\r
 " .if (shader_type == 2) \"attribute\" .emit TYPE_QUALIFIER_ATTRIBUTE .or\n"\r
 " \"varying\" .emit TYPE_QUALIFIER_VARYING .or\n"\r
-" \"uniform\" .emit TYPE_QUALIFIER_UNIFORM;\n"\r
+" \"uniform\" .emit TYPE_QUALIFIER_UNIFORM .or\n"\r
+"      .if (parsing_builtin != 0) \"__fixed_output\" .emit TYPE_QUALIFIER_FIXEDOUTPUT .or\n"\r
+"      .if (parsing_builtin != 0) \"__fixed_input\" .emit TYPE_QUALIFIER_FIXEDINPUT;\n"\r
 "type_specifier_space\n"\r
 " \"void\" .emit TYPE_SPECIFIER_VOID .or\n"\r
 " \"float\" .emit TYPE_SPECIFIER_FLOAT .or\n"\r
@@ -536,7 +540,7 @@
 " \"for\" .emit OP_FOR .and lparen .error LPAREN_EXPECTED .and for_init_statement .and\n"\r
 " for_rest_statement .and rparen .error RPAREN_EXPECTED .and statement_no_new_scope;\n"\r
 "for_init_statement\n"\r
-" expression_statement .or declaration_statement;\n"\r
+" expression_statement .emit OP_EXPRESSION .or declaration_statement .emit OP_DECLARE;\n"\r
 "conditionopt\n"\r
 " condition .or\n"\r
 " .true .emit OP_EXPRESSION .emit OP_PUSH_BOOL .emit 2 .emit '1' .emit '\\0' .emit OP_END;\n"\r