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* glsl: Track matrix layout of structure fields using two bitsIan Romanick2014-08-046-50/+96
| | | | | | | | | v2: Rename GLSL_MATRIX_LAYOUT_DEFAULT to GLSL_MATRIX_LAYOUT_INHERITED. Add comments in glsl_types.h explaining the layouts. Suggested by Matt. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Jordan Justen <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* glsl: Correctly load columns of a row-major matrixIan Romanick2014-08-041-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For a row-major matrix, the next column starts at the next element. Fixes gles3conform failures in: ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat2 ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat3 ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat4 ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat2x3 ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat2x4 ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat3x2 ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat3x4 ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat4x2 ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat4x3 ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat2 ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat3 ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat4 ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat2x3 ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat2x4 ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat3x2 ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat3x4 ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat4x2 ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat4x3 ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat2 ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat3 ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat4 ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat2x3 ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat2x4 ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat3x2 ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat3x4 ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat4x2 ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat4x3 ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.9 Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* linker: Add padding after the last field of a structureIan Romanick2014-08-043-3/+25
| | | | | | | | | | | | This causes the thing following the structure to be vec4-aligned. Fixes gles3conform failures in: ES3-CTS.shaders.uniform_block.random.nested_structs.2 ES3-CTS.shaders.uniform_block.random.all_shared_buffer.5 Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* linker: Add a last_field parameter to various program_resource_visitor methodsIan Romanick2014-08-043-16/+30
| | | | | | | | | I also considered renaming visit_field(const glsl_struct_field *) to entry_record and adding an exit_record method. This would be more similar to the hierarchical visitor. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* glsl: Do not eliminate 'shared' or 'std140' blocks or block membersIan Romanick2014-08-043-4/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 32f32292 (glsl: Allow elimination of uniform block members) enabled elimination of unused uniform block members to fix a gles3 conformance test failure. This went too far the other way. Section 2.11.6 (Uniform Variables) of the OpenGL ES 3.0.3 spec says: "All members of a named uniform block declared with a shared or std140 layout qualifier are considered active, even if they are not referenced in any shader in the program. The uniform block itself is also considered active, even if no member of the block is referenced." Fixes gles3conform failures in: ES3-CTS.shaders.uniform_block.single_nested_struct.per_block_buffer_shared ES3-CTS.shaders.uniform_block.single_nested_struct.per_block_buffer_std140 ES3-CTS.shaders.uniform_block.single_nested_struct_array.per_block_buffer_shared ES3-CTS.shaders.uniform_block.single_nested_struct_array.per_block_buffer_std140 ES3-CTS.shaders.uniform_block.random.scalar_types.2 ES3-CTS.shaders.uniform_block.random.scalar_types.9 ES3-CTS.shaders.uniform_block.random.vector_types.1 ES3-CTS.shaders.uniform_block.random.vector_types.3 ES3-CTS.shaders.uniform_block.random.vector_types.7 ES3-CTS.shaders.uniform_block.random.vector_types.9 ES3-CTS.shaders.uniform_block.random.basic_types.5 ES3-CTS.shaders.uniform_block.random.basic_types.6 ES3-CTS.shaders.uniform_block.random.basic_arrays.0 ES3-CTS.shaders.uniform_block.random.basic_arrays.2 ES3-CTS.shaders.uniform_block.random.basic_arrays.5 ES3-CTS.shaders.uniform_block.random.basic_arrays.8 ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.0 ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.4 ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.5 ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.6 ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.9 ES3-CTS.shaders.uniform_block.random.nested_structs.0 ES3-CTS.shaders.uniform_block.random.nested_structs.1 ES3-CTS.shaders.uniform_block.random.nested_structs_arrays.4 ES3-CTS.shaders.uniform_block.random.nested_structs_instance_arrays.8 ES3-CTS.shaders.uniform_block.random.nested_structs_arrays_instance_arrays.7 ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.3 ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.6 ES3-CTS.shaders.uniform_block.random.all_shared_buffer.18 v2: Whitespace and other minor fixes suggested by Matt. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* glsl: Use the without_array predicate to simplify some codeIan Romanick2014-08-044-23/+12
| | | | | | Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]> [v1] Reviewed-by: Timothy Arceri <[email protected]>
* glsl: Add without_array type predicateIan Romanick2014-08-041-0/+12
| | | | | | | | | | | Returns the type without any arrays. This will be used in later patches in this series. Signed-off-by: Ian Romanick <[email protected]> Suggested-by: Timothy Arceri <[email protected]> Reviewed-by: Timothy Arceri <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Use constant_expression_value instead of as_constantIan Romanick2014-08-041-1/+2
| | | | | | | | | Just a few lines earlier we may have wrapped the index expression with ir_unop_i2u expression. Whenever that happens, as_constant will return NULL, and that almost always happens. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Connor Abbott <[email protected]>
* util: Gather some common macrosJason Ekstrand2014-08-041-3/+4
| | | | | | | | | | This gathers macros that have been included across components into util so that the include chain can be more vertical. In particular, this makes util stand on its own without any dependence whatsoever on the rest of mesa. Signed-off-by: "Jason Ekstrand" <[email protected]> Reviewed-by: Marek Olšák <[email protected]>
* util: Move the open-addressing linear-probing hash_table to src/util.Kenneth Graunke2014-08-046-10/+4
| | | | | | | | | | | | | | | | | This hash table is used in core Mesa, the GLSL compiler, and the i965 driver, which makes it a good candidate for the new src/util module. It's much faster than program/hash_table.[ch] (see commit 6991c2922f5 for data), and José's u_hash_table.c has a comment saying Gallium should probably consider switching to a linear probing hash table at some point. So this seems like the best candidate for a shared data structure. Signed-off-by: Kenneth Graunke <[email protected]> v2 (Jason Ekstrand): Pick up another hash_table use and patch up scons Signed-off-by: Jason Ekstrand <[email protected]> Reviewed-by: Marek Olšák <[email protected]>
* util: Move ralloc to a new src/util directory.Kenneth Graunke2014-08-0420-999/+17
| | | | | | | | | | | | | | | | | | For a long time, we've wanted a place to put utility code which isn't directly tied to Mesa or Gallium internals. This patch creates a new src/util directory for exactly that purpose, and builds the contents as libmesautil.la. ralloc seemed like a good first candidate. These days, it's directly used by mesa/main, i965, i915, and r300g, so keeping it in src/glsl didn't make much sense. Signed-off-by: Kenneth Graunke <[email protected]> v2 (Jason Ekstrand): More realloc uses and some scons fixes Signed-off-by: Jason Ekstrand <[email protected]> Reviewed-by: Marek Olšák <[email protected]>
* glsl: fix switch statement default case regressionsTapani Pälli2014-08-041-6/+6
| | | | | | | | | | | | This patch fixes regressions caused by commit 48deb4d. Regressions happened because 'run_default' var did not get initialized when default case was the last one. Now all the switch tests in es3conform suite are passing. Signed-off-by: Tapani Pälli <[email protected]> Reviewed-by: Chris Forbes <[email protected]> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81857
* define GL_OES_standard_derivatives if extension is supportedKevin Rogovin2014-08-021-0/+2
| | | | | | | | | Define the macro GL_OES_standard_derivatives as 1 if the extension GL_OES_standard_derivatives is supported. V2 [Chris]: Correct trailing whitespace Reviewed-by: Chris Forbes <[email protected]>
* glsl/glcpp: rename ERROR to ERROR_TOKEN to fix MSVC buildBrian Paul2014-07-302-4/+4
| | | | | | | ERROR is a #define in the MSVC WinGDI.h header file. Add the _TOKEN suffix as we do for a few other lexer tokens. Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Add flex options to eliminate the default ruleCarl Worth2014-07-291-10/+1
| | | | | | | | | | | | | | | | | | | | We've had bugs in the past where we have been inadvertently matching the default rule. Just as we did in the pre-processor in the previous commit, we can use: %option warn nodefault in the compiler to instruct flex to not generate the default rule, and further to warn if our set of rules could let any characters go unmatched. With this warning active, flex actually warns that the catch-all rule we recently added to the compiler could never be matched. Since that is all safely determined at compile time now, we can safely drop this run-time compiler error message, (as we do in this commit). Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Kristian Høgsberg <[email protected]>
* glsl/glcpp: Add flex options to eliminate the default rule.Carl Worth2014-07-291-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | We've had multiple bugs in the past where we have been inadvertently matching the default rule, (which we never want to do). We recently added a catch-all rule to avoid this, (and made this rule robust for future start conditions). Kristian pointed out that flex allows us to go one step better. This syntax: %option warn nodefault instructs flex to not generate the default rule at all. Further, flex will generate a warning at compile time if the set of rules we provide are inadequate, (such that it would be possible for the default rule to be matched). With this warning in place, I found that the catch-all rule was in fact missing something. The catch-all rule uses a pattern of "." which doesn't match newlines. So here we extend the newline-matching rule to all start conditions. That is enough to convince flex that it really doesn't need any default rule. Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Kristian Høgsberg <[email protected]>
* glsl/glcpp: Combine the two rules matching any characterCarl Worth2014-07-291-6/+6
| | | | | | | | | | Using a single rule here means that we can use the <*> syntax to match all start conditions. This makes the catch-all rule more robust against the addition of future start conditions, (no need to maintain an ever- growing list of start conditions for this rul). Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Kristian Høgsberg <[email protected]>
* glsl/glcpp: Alphabetize lists of start conditionsCarl Worth2014-07-291-3/+3
| | | | | | | | | | | | There is no behavioral change here. It's just easier to verify that lists of start conditions include all expected conditions when they appear in a consistent order. The <INITIAL> state is special, so it appears first in all lists. All others appear in alphabetical order. Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Kristian Høgsberg <[email protected]>
* glsl/glcpp: Add a catch-all rule for unexpected characters.Carl Worth2014-07-291-0/+13
| | | | | | | | | | | | | | | | | | In some of the recent glcpp bug-fixing, we found that glcpp was emitting unrecognized characters from the input source file to stdout, and dropping them from the source passed onto the compiler proper. This was obviously confusing, and totally undesired. The bogus behavior comes from an implicit default rule in flex, which is that any unmatched character is implicitly matched and printed to stdout. To avoid this implicit matching and printing, here we add an explicit catch-all rule. If this rule ever matches it prints an internal compiler error. The correct response for any such error is fixing glcpp to handle the unexpected character in the correct way. Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Treat carriage return as equivalent to line feed.Carl Worth2014-07-291-9/+8
| | | | | | | | | | | | | | | | | | | Previously, the '\r' character was not explicitly matched by any lexer rule. This means that glcpp would have been using the default flex rule to match '\r' characters, (where they would have been printed to stdout rather than actually correctly handled). With this commit, we treat '\r' as equivalent to '\n'. This is clearly an improvement the bogus printing to stdout. The resulting behavior is compliant with the GLSL specification for any source file that uses exclusively '\r' or '\n' to separate lines. For shaders that use a multiple-character line separator, (such as "\r\n"), glcpp won't be precisely compliant with the specification, (treating these as two newline characters rather than one), but this should not introduce any semantic changes to the shader programs. Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Add test for a multi-line comment within an #if 0 blockCarl Worth2014-07-292-0/+14
| | | | | | | | | | | | | | | | | | | This test is written to exercise a bug which I recently wrote, (but fortunately caught and fixed before ever committing it). For the curious: The bug happened when the NEWLINE_CATCHUP code didn't actually return the NEWLINE token (due to the skipping). This resulted in the lexer continuing on through all the subsequent rules while still in the NEWLINE_CATCHUP start condition, (which then triggered the internal-compiler-error catch-all rule). What is intended is for the return of the NEWLINE token to start a new iteration of the lexer loop, at which time the NEWLINE_CATCHUP-handling code will reset from the <NEWLINE_CATCHUP> to the <INITIAL> start condition. Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Test that macro parameters substitute immediately after periodsCarl Worth2014-07-292-0/+8
| | | | | | | | | | | | At one point while rewriting the lexing rule for pre-processing numbers, I made it a bit too aggressive and within a replacement list sucked up a parameter name that appeared immediately after a period. This caused the parameter name to be unreplaced when the macro was expanded. It was in some piglit tests that I originally found this issue. Here, I'm adding a test to "make check" to ensure that this behavior remains correct. Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Add (non)-support for ++ and -- operatorsCarl Worth2014-07-294-1/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | These operators aren't defined for preprocessor expressions, so we never implemented them. This led them to be misinterpreted as strings of unary '+' or '-' operators. In fact, what is actually desired is to generate an error if these operators appear in any preprocessor condition. So this commit looks like it is strictly adding support for these operators. And it is supporting them as far as passing them through to the subsequent compiler, (which was already happening anyway). What's less apparent in the commit is that with these tokens now being lexed, but with no change to the grammar for preprocessor expressions, these operators will now trigger errors there. A new "make check" test is added to verify the desired behavior. This commit fixes the following Khronos GLES3 CTS test: invalid_op_1_vertex invalid_op_1_fragment invalid_op_2_vertex invalid_op_2_fragment Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Emit error for duplicate parameter name in function-like macroCarl Worth2014-07-293-0/+35
| | | | | | | | | | | | | | | | | This will emit an error for something like: #define FOO(x,x) ... Obviously, it's not a legal thing to do, and it's easy to check. Add a "make check" test for this as well. This fixes the following Khronos GLES3 CTS tests: invalid_function_definitions.unique_param_name_vertex invalid_function_definitions.unique_param_name_fragment Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Add an explanatory comment for "loc != NULL" checkCarl Worth2014-07-291-0/+4
| | | | | | | | | | | Just reading the code, it looked like a bug that _define_object_macro had this check, but _define_function_macro did not. Upon further reading, that's because the check is to allow for our builtins to be defined, (and there are no builtin function-like macros). Add my new understanding as a comment to help the next reader. Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Drop the HASH_ prefix from token names like HASH_IFCarl Worth2014-07-292-38/+39
| | | | | | | | | | | | | | | | | | | Previously, we had a single token for "#if" but now that we have two separate tokens, it looks much better to see: HASH_TOKEN IF than: HASH_TOKEN HASH_IF (Note, that for the same reason we use HASH_TOKEN instead of HASH, we also use DEFINE_TOKEN instead of DEFINE to avoid a conflict with the <DEFINE> start condition in the lexer.) There should be no behavioral change from this commit. Reviewed-by: Jordan Justen <[email protected]>
* glsl: Properly lex extra tokens when handling # directives.Kenneth Graunke2014-07-291-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without this, in the <PP> state, we would hit Flex's default rule, which prints tokens to stdout, rather than returning them as tokens. (Or, after the previous commit, we would hit the new catch-all rule and generate an internal compiler error.) With this commit in place, we generate the desired syntax error. This manifested as a weird bug where shaders with semicolons after extension directives, such as: #extension GL_foo_bar : enable; would print semicolons to the screen, but otherwise compile just fine (even though this is illegal). Fixes Piglit's extension-semicolon.frag test. This also fixes the following Khronos GLES3 conformance tests, (and for real this time): invalid_char_in_name_vertex invalid_char_in_name_fragment Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Carl Worth <[email protected]> Reviewed-by: Jordan Justen <[email protected]>
* glsl: Add an internal-error catch-all ruleCarl Worth2014-07-291-0/+13
| | | | | | | | | | | | | | | | This is to avoid the default, silent flex rule which simply prints the character to stdout. For the following Khronos GLES3 conformance tests: invalid_char_in_name_vertex invalid_char_in_name_fragment With this commit, these tests now report Pass where they previously reported Fail, but Mesa isn't behaving correctly yet. It's now reporting the internal error where what is really desired is a syntax error. Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Correctly parse directives with intervening commentsCarl Worth2014-07-2916-110/+242
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's legal (though highly bizarre) for a pre-processor directive to look like this: # /* why? */ define FOO bar This behavior comes about since the specification defines separate logical phases in a precise order, and comment-removal occurs in a phase before the identification of directives. Our implementation does not use an actual separate phase for comment removal, so some extra care is necessary to correctly parse this. What we want is for '#' to introduce a directive iff it is the first token on a line, (ignoring whitespace and comments). Previously, we had a lexical rule that worked only for whitespace (not comments) with the following regular expression to find a directive-introducing '#' at the beginning of a line: HASH ^{HSPACE}*#{HSPACE}* In this commit, we switch to instead use a simple literal match of '#' to return a HASH_TOKEN token and add a new <HASH> start condition for whenever the HASH_TOKEN is the first non-space token of a line. This requires the addition of the new bit of state: first_non_space_token_this_line. This approach has a couple of implications on the glcpp parser: 1. The parser now sees two separate tokens, (such as HASH_TOKEN and HASH_DEFINE) where it previously saw one token (HASH_DEFINE) for the sequence "#define". This is a straightforward change throughout the grammar. 2. The parser may now see a SPACE token before the HASH_TOKEN token of a directive. Previously the lexical regular expression for {HASH} would eat up the space and there would be no SPACE token. This second implication is a bit of a nuisance for the parser. It causes a SPACE token to appear in a production of the grammar with the following two definitions of a control_line: control_line SPACE control_line This is really ugly, since normally a space would simply be a token separator, so it wouldn't appear in the tokens of a production. This leads to a further problem with interleaved spaces and comments: /* ... */ /* ... */ #define /* ..*/ For this, we must not return several consecutive SPACE tokens, or else we would need an arbitrary number of new productions: SPACE SPACE control_line SPACE SPACE SPACE control_line ad nauseam To avoid this problem, in this commit we also change the lexer to emit only a single SPACE token for any series of consecutive spaces, (whether from actual whitespace or comments). For this compression, we add a new bit of parser state: last_token_was_space. And we also update the expected results of all necessary test cases for the new compression of space tokens. Fortunately, the compression of spaces should not lead to any semantic changes in terms of what the eventual GLSL compiler sees. So there's a lot happening in this commit, (particularly for such a tiny feature). But fortunately, the lexer itself is looking cleaner than ever. The only ugly bit is all the state updating, but it is at least isolated to a single shared function. Of course, a new "make check" test is added for the new feature, (directives with comments and whitespace interleaved in many combinations). And this commit fixes the following Khronos GLES3 CTS tests: function_definition_with_comments_vertex function_definition_with_comments_fragment Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Rename HASH token to HASH_TOKENCarl Worth2014-07-292-5/+8
| | | | | | | | | | | This is in preparation for the planned addition of a new <HASH> start condition to the lexer. Both start conditions and token types are, of course, in the same default C namespace, so a start condition and a token type with the same name will collide. (And unfortunately, they are both apparently implemented as equivalent numeric types so the collision is undetected at compile time and simply leads to unpredictable behavior at run time.) Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Don't use start-condition stack when switching to/from <DEFINE>Carl Worth2014-07-291-3/+3
| | | | | | | | | | | | | | | | | | | | | This commit does not cause any behavioral change for any valid program. Prior to entering the <DEFINE> start condition, the only valid start condition is <INITIAL>, so whether pushing/popping <DEFINE> onto the stack or explicit returning to <INITIAL> is equivalent. The reason for this change is that we are planning to soon add a start condition for <HASH> with the following semantics: <HASH>: We just saw a directive-introducing '#' <DEFINE>: We just saw "#define" starting a directive With these two start conditions in place, the only correct behavior is to leave <DEFINE> by returning to <INITIAL>. But the old push/pop code would have returned to the <HASH> start condition which would then cause an error when the next directive-introducing '#' would be encountered. Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Add a -d/--debug option to the standalone glcpp programCarl Worth2014-07-292-1/+7
| | | | | | | | | The verbose debug output from the parser is quite useful when debugging, and having this available as a command-line option is much more convenient than manually forcing this into the code when needed, (which is what I had been doing for too long previously). Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Fix off-by-one error in column in first-line error messagesCarl Worth2014-07-2917-19/+19
| | | | | | | | | | | | | | For the first line we were initializing the column to 1, but for all subsequent lines we were initializing the column to 0. The column number is advanced for each token read before any error message is printed. So the 0 value is the correct initialization, (so that the first column is reported as column 1). With this extremely minor change, many of the .expected files are updated such that error messages for the first line now have the correct column number in them. Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Minor tweak to wording of error messageCarl Worth2014-07-293-3/+3
| | | | | | It makes more sense to print the directive name with the preceding '#'. Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Stop using a lexer start condition (<SKIP>) for token skipping.Carl Worth2014-07-293-63/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here, "skipping" refers to the lexer not emitting any tokens for portions of the file within an #if condition (or similar) that evaluates to false. Previously, the lexer had a special <SKIP> start condition used to control this skipping. This start condition was not handled like a normal start condition. Instead, there was a particularly ugly block of code set to be included at the top of the generated lexing loop that would change from <INITIAL> to <SKIP> or from <SKIP> to <INITIAL> depending on various pieces of parser state, (such as parser->skip_state and parser->lexing_directive). Not only was that an ugly approach, but the <SKIP> start condition was complicating several glcpp bug fixes I attempted recently that want to use start conditions for other purposes, (such as a new <HASH> start condition). The recently added RETURN_TOKEN macro gives us a convenient way to implement skipping without using a lexer start condition. Now, at the top of the generated lexer, we examine all the necessary parser state and set a new parser->skipping bit. Then, in RETURN_TOKEN, we examine parser->skipping to determine whether to actually emit the token or not. Besides this, there are only a couple of other places where we need to examine the skipping bit (other than when returning a token): * To avoid emitting an error for #error if skipped. * To avoid entering the <DEFINE> start condition for a #define that is skipped. With all of this in place in the present commit, there are hopefully no behavioral changes with this patch, ("make check" still passes all of the glcpp tests at least). Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Abstract a bit of common code for returning string tokensCarl Worth2014-07-291-22/+18
| | | | | | | Now that we have a common macro for returning tokens, it makes sense to perform some of the common work there, (such as copying string values). Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Drop extra, final newline from most outputCarl Worth2014-07-29130-165/+51
| | | | | | | | | | | | | | | | | | | | The glcpp parser is line-based, so it needs to see a NEWLINE token at the end of each line. This causes a trick for files that end without a final newline. Previously, the lexer for glcpp punted in this case by unconditionally returning a NEWLINE token at end-of-file, (causing most files to have an extra blank line at the end). Here, we refine this by lexing end-of-file as a NEWLINE token only if the immediately preceding token was not a NEWLINE token. The patch is a minor change that only looks huge for two reasons: 1. Almost all glcpp test result ".expected" files are updated to drop the extra newline. 2. All return statements from the lexer are adjusted to use a new RETURN_TOKEN macro that tracks the last-token-was-a-newline state. Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Add testing for EOF sans newline (and fix for <DEFINE>, <COMMENT>)Carl Worth2014-07-297-2/+13
| | | | | | | | | | | | | | | | The glcpp implementation has long had code to support a file that ends without a final newline. But we didn't have a "make check" test for this. Additionally, the <EOF> action was restricted only to the <INITIAL> state so it would fail to get invoked if the EOF was encountered in the <COMMENT> or the <DEFINE> case. Neither of these was a bug, per se, since EOF in either of these cases is an error anyway, (either "unterminated comment" or "missing macro name for #define"). But with the new explicit support for these cases, we not generate clean error messages in these cases, (rather than "unexpected $end" from before). Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Remove some un-needed calls to NEWLINE_CATCHUPCarl Worth2014-07-291-4/+0
| | | | | | | | | | | | | | | | | The NEWLINE_CATCHUP code is only intended to be invoked after we lex an actual newline character ('\n'). The two extra calls here were apparently added accidentally because the pattern happened to contain a (negated) '\n', (see commit 6005e9cb283214cd57038c7c5e7758ba72ec6ac2). I don't think either case could have caused any actual bug. (In the first case, the pattern matched right up to the next newline, so the NEWLINE_CATCHUP code was just about to be called. In the second case, I don't think it's possible to actually enter the <SKIP> start condition after commented newlines without any intervening newline.) But, if nothing else, the code is cleaner without these extra calls. Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Add support for comments between #define and macro identifierCarl Worth2014-07-293-2/+41
| | | | | | | | | | | | | | | The recent adddition of an error for "#define followed by a non-identifier" was a bit to aggressive since it used a regular expression in the lexer to flag any character that's not legal as the first character of an identifier. But we need to allow comments to appear here, (since we aren't removing comments in a preliminary pass). So we refine the error here to only flag characters that could not be an identifier, nor a comment, nor whitespace. We also augment the existing comment support to be active in the <DEFINE> state as well. Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Emit proper error for #define with a non-identifierCarl Worth2014-07-293-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, if the preprocessor encountered a #define with a non-identifier, such as: #define 123 456 The lexer had no explicit rules to match non-identifiers in the <DEFINE> start state. Because of this, flex's default rule was being invoked, (printing characters to stdout), and all text was being discarded by the compiler until the next identifier. As one can imagine, this led to all sorts of interesting and surprising results. Fix this by adding an explicit rule complementing the existing identifier-based rules that should catch all non-identifiers after #define and reliably give a well-formatted error message. A new test is added to "make check" to ensure this bug stays fixed. This commit also fixes the following Khronos GLES3 CTS test: define_non_identifier_vertex (The "fragment" variant was passing earlier only because the preprocessor was behaving so randomly and causing the compilation to fail. It's lucky, in fact, that the "vertex" version succesfully compiled so we could find and fix this bug.) Reviewed-by: Jordan Justen <[email protected]>
* glsl/glcpp: Add testing for directives preceded by a spaceCarl Worth2014-07-292-0/+43
| | | | | This test simply has one of each directive, all of which are preceded by a single space character.
* glsl/glcpp: Fix to emit spaces following directivesCarl Worth2014-07-292-2/+3
| | | | | | | | | | | | | The glcpp lexer and parser use the space_tokens state bit to avoid emitting tokens for spaces while parsing a directive. Previously, this bit was only being set again by the first non-space token following a directive. This led to a bug where a space, (or a comment that should emit a space), immediately following a directive, (optionally searated by newlines), would be omitted from the output. Here we fix the bug by also setting the space_tokens bit whenever we lex a newline in the standard start conditions.
* glsl/cs: Add several GLSL compute shader variablesJordan Justen2014-07-271-0/+6
| | | | | | | | With MESA_EXTENSION_OVERRIDE=GL_ARB_compute_shader, this fixes piglit: built-in-constants tests/spec/arb_compute_shader/minimum-maximums.txt Signed-off-by: Jordan Justen <[email protected]> Reviewed-by: Chris Forbes <[email protected]>
* glsl: No longer require ubo block index to be constant in ir_validateChris Forbes2014-07-261-1/+0
| | | | | | Signed-off-by: Chris Forbes <[email protected]> Reviewed-by: Ilia Mirkin <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Accept nonconstant array references in lower_ubo_referenceChris Forbes2014-07-261-11/+32
| | | | | | | | | | | | Instead of falling back to just the block name (which we won't find), look for the first element of the block array. We'll deal with the rest in the backend by arranging for the blocks to be laid out contiguously. V2: Squashed together patches 3, 5 of V1, plus a naming tweak. Signed-off-by: Chris Forbes <[email protected]> Reviewed-by: Ilia Mirkin <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Convert uniform_block in lower_ubo_reference to ir_rvalue.Chris Forbes2014-07-261-7/+8
| | | | | | | | | | Previously this was a block index with special semantics for -1. With ARB_gpu_shader5, this need not be a compile-time constant, so allow any rvalue here and convert the -1 to a NULL pointer. Signed-off-by: Chris Forbes <[email protected]> Reviewed-by: Ilia Mirkin <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Mark entire UBO array active if indexed with non-constant.Chris Forbes2014-07-261-19/+31
| | | | | | | | | Without doing a lot more work, we have no idea which indices may be used at runtime, so just mark them all. Signed-off-by: Chris Forbes <[email protected]> Reviewed-by: Ilia Mirkin <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Allow non-constant UBO array indexing with GLSL4/ARB_gpu_shader5.Chris Forbes2014-07-261-1/+2
| | | | | | Signed-off-by: Chris Forbes <[email protected]> Reviewed-by: Ilia Mirkin <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Fix some bad indentationIan Romanick2014-07-231-3/+3
| | | | | Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
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