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* glsl: Use a new foreach_two_lists macro for walking two lists at once.Kenneth Graunke2014-01-131-12/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When handling function calls, we often want to walk through the list of formal parameters and list of actual parameters at the same time. (Both are guaranteed to be the same length.) Previously, we used a pattern of: exec_list_iterator 1st_iter = <1st list>.iterator(); foreach_iter(exec_list_iterator, 2nd_iter, <2nd list>) { ... 1st_iter.next(); } This was awkward, since you had to manually iterate through one of the two lists. This patch introduces a foreach_two_lists macro which safely walks through two lists at the same time, so you can simply do: foreach_two_lists(1st_node, <1st list>, 2nd_node, <2nd list>) { ... } v2: Rename macro from foreach_list2 to foreach_two_lists, as suggested by Ian Romanick. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* Report that no function found if signature lookup is emptyKevin Rogovin2013-12-201-9/+16
| | | | | | | If no function signature is found for a function name, report that the function is not found instead of printing an empty list of candidates. Reviewed-by: Ian Romanick <[email protected]>
* Use line number information from entire function expressionKevin Rogovin2013-12-201-1/+1
| | | | | | | | | | | | This patch changes the error reporting behavior for incorrect function invocation (triggered by match_function_by_name() unable to find a matching function call) from using the line number information associated to the function name term to using the line number information of the entire function expression. Fixes bug #72264. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=72264 Reviewed-by: Ian Romanick <[email protected]> Cc: "10.0" <[email protected]>
* glsl: move variables in to ir_variable::data, part ITapani Pälli2013-12-121-7/+7
| | | | | | | | | | This patch moves following bitfields in to the data structure: used, assigned, how_declared, mode, interpolation, origin_upper_left, pixel_center_integer Signed-off-by: Tapani Pälli <[email protected]> Reviewed-by: Paul Berry <[email protected]>
* glsl: introduce data section to ir_variableTapani Pälli2013-12-121-1/+1
| | | | | | | | Data section helps serialization and cloning of a ir_variable. This patch includes the helper bits used for read only ir_variables. Signed-off-by: Tapani Pälli <[email protected]> Reviewed-by: Paul Berry <[email protected]>
* glsl: Simplify the built-in function linking code.Kenneth Graunke2013-12-011-2/+2
| | | | | | | | | | | | | | | | | | Previously, we stored an array of up to 16 additional shaders to link, as well as a count of how many each shader actually needed. Since the built-in functions rewrite, all the built-ins are stored in a single shader. So all we need is a boolean indicating whether a shader needs to link against built-ins or not. During linking, we can avoid creating the temporary array if none of the shaders being linked need built-ins. Otherwise, it's simply a copy of the array that has one additional element. This is much simpler. This patch saves approximately 128 bytes of memory per gl_shader object. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glsl: Drop crazy looping from no_matching_function_error().Kenneth Graunke2013-12-011-16/+23
| | | | | | | | | | | | Since the built-in functions rewrite, num_builtins_to_link is always either 0 or 1, so we don't need tho crazy loop starting at -1 with a special case. All we need to do is print the prototypes from the current shader, and the single built-in function shader (if present). Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glsl: Merge "candidates are: " message to the previous line.Kenneth Graunke2013-12-011-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | | Previously, when we hit a "no matching function" error, it looked like: 0:0(0): error: no matching function for call to `cos()' 0:0(0): error: candidates are: float cos(float) 0:0(0): error: vec2 cos(vec2) 0:0(0): error: vec3 cos(vec3) 0:0(0): error: vec4 cos(vec4) Now it looks like: 0:0(0): error: no matching function for call to `cos()'; candidates are: 0:0(0): error: float cos(float) 0:0(0): error: vec2 cos(vec2) 0:0(0): error: vec3 cos(vec3) 0:0(0): error: vec4 cos(vec4) This is not really any worse and removes the need for the prefix variable. It will also help with the next commit's refactoring. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Chris Forbes <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glsl: Drop unused call_ir parameter from generate_call().Kenneth Graunke2013-12-011-8/+6
| | | | | Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glsl: Add check for unsized arrays to glsl typesTimothy Arceri2013-10-281-7/+7
| | | | | | | | | | | | | | | | | | | | The main purpose of this patch is to increase readability of the array code by introducing is_unsized_array() to glsl_types. Some redundent is_array() checks are also removed, and small number of other related clean ups. The introduction of is_unsized_array() should also make the ARB_arrays_of_arrays code simpler and more readable when it arrives. V2: Also replace code that checks for unsized arrays directly with the length variable Signed-off-by: Timothy Arceri <[email protected]> v3 (Paul Berry <[email protected]>): clean up formatting. Separate whitespace cleanups to their own patch. Reviewed-by: Paul Berry <[email protected]>
* glsl: Switch to the new built-in function module.Kenneth Graunke2013-09-091-27/+2
| | | | | | | | All built-ins are now handled by the new code; the old system is dead. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Paul Berry <[email protected]>
* glsl: Skip unavailable built-ins when printing out similar candidates.Kenneth Graunke2013-09-091-0/+3
| | | | | | Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Paul Berry <[email protected]>
* glsl: Pass _mesa_glsl_parse_state into matching_signature and such.Kenneth Graunke2013-09-091-2/+3
| | | | | | | | | | | | | | | | | | | | | | | During compilation, we'll use this to determine built-in availability. The plan is to have a single shader containing every built-in in every version of the language, but filter out the ones that aren't actually available to the shader being compiled. At link time, we don't actually need this filtering capability: we've already imported prototypes for every built-in that the shader actually calls, and they're flagged as is_builtin(). The linker doesn't import any additional prototypes, so it won't pull in any unavailable built-ins. When resolving prototypes to function definitions, the linker ensures the values of is_builtin() match, which means that a shader can't trick the linker into importing the body of an unavailable built-in by defining a suspiciously similar prototype. In other words, during linking, we can just pass in NULL. It will work out fine. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Paul Berry <[email protected]>
* glsl: Be consistent about '\n', '.', and capitalization in errors/warnings.Paul Berry2013-07-271-1/+1
| | | | | | | | | | | | The majority of calls to _mesa_glsl_error(), _mesa_glsl_warning(), and _mesa_glsl_parse_state::check_version() use a message that begins with a lower case letter and ends without a period. This patch makes all messages follow that convention. Also, error/warning messages shouldn't end in '\n', since _mesa_glsl_msg() automatically adds '\n' at the end of the message. Reviewed-by: Matt Turner <[email protected]>
* glsl: Reject C-style initializers with unknown types.Matt Turner2013-07-151-0/+5
| | | | | | | | | | | | | | | | | | | | | | | _mesa_ast_set_aggregate_type walks through declarations initialized with C-style aggregate initializers and stops when it runs out of LHS declarations or RHS expressions. In the example vec4 v = {{{1, 2, 3, 4}}}; _mesa_ast_set_aggregate_type would not recurse into the subexpressions (since vec4s do not contain types that can be initialized with an aggregate initializer) to set their <constructor_type>s. Later in ::hir we would dereference the NULL pointer and segfault. If <constructor_type> is NULL in ::hir we know that the LHS and RHS were unbalanced and the code is illegal. Arrays, structs, and matrices were unaffected. Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Chris Forbes <[email protected]>
* glsl: Add infrastructure for aggregate initializers.Matt Turner2013-07-111-0/+30
| | | | Reviewed-by: Ian Romanick <[email protected]>
* glsl: Add process_vec_mat_constructor() function.Matt Turner2013-07-111-0/+114
| | | | | | Based largely on process_array_constructor(). Reviewed-by: Ian Romanick <[email protected]>
* glsl: Separate code into process_record_constructor().Matt Turner2013-07-111-48/+60
| | | | Reviewed-by: Ian Romanick <[email protected]>
* glsl: Clean up and clarify comment explaining initializer rules.Matt Turner2013-07-111-7/+13
| | | | Reviewed-by: Ian Romanick <[email protected]>
* glsl: Fix inverted conditional in error message.Matt Turner2013-07-111-1/+1
| | | | | | | | | | | | The code float a[2] = float[2]( 3.4, 4.2, 5.0 ); previously generated this: error: array constructor must have at least 2 parameters when in fact it requires exactly two. Reviewed-by: Chad Versace <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glsl: Add missing return error_value(ctx) in error path.Matt Turner2013-07-111-0/+1
| | | | | Reviewed-by: Chad Versace <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glsl: Generate correct ir_binop_vector_extract code for out and inout parametersIan Romanick2013-05-131-47/+102
| | | | | | | | | | | | | | Like with type conversions on out parameters, some extra copies need to occur to handle these cases. The fundamental problem is that ir_binop_vector_extract is not an lvalue, but out and inout parameters must be lvalues. A previous patch delt with a similar problem in the LHS of ir_assignment. v2: Convert tabs to spaces. Suggested by Eric. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Eliminate ambiguity between function ins/outs and shader ins/outsPaul Berry2013-01-241-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch replaces the three ir_variable_mode enums: - ir_var_in - ir_var_out - ir_var_inout with the following five: - ir_var_shader_in - ir_var_shader_out - ir_var_function_in - ir_var_function_out - ir_var_function_inout This eliminates a frustrating ambiguity: it used to be impossible to tell whether an ir_var_{in,out} variable was a shader in/out or a function in/out without seeing where the variable was declared in the IR. This complicated some optimization and lowering passes, and would have become a problem for implementing varying structs. In the lisp-style serialization of GLSL IR to strings performed by ir_print_visitor.cpp and ir_reader.cpp, I've retained the names "in", "out", and "inout" for function parameters, to avoid introducing code churn to the src/glsl/builtins/ir/ directory. Note: a couple of comments in the code seemed to indicate that we were planning for a possible future in which geometry shaders could have shader-scope inout variables. Our GLSL grammar rejects shader-scope inout variables, and I've been unable to find any evidence in the GLSL standards documents (or extensions) that this will ever be allowed, so I've eliminated these comments. Reviewed-by: Carl Worth <[email protected]> Reviewed-by: Jordan Justen <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
* glsl: Remove unused loc parameter from generate_callIan Romanick2013-01-181-2/+2
| | | | | Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Enable GLSL ES 3.00 features inherited from desktop GLSL.Paul Berry2012-12-061-3/+4
| | | | | | | | | | | | | | | | | | | | This patch turns on the following features for GLSL ES 3.00: - Array constructors, whole array assignment, and array comparisons. - Second and third operands of ?: may be arrays. - Use of "in" and "out" qualifiers on globals. - Bitwise and modulus operators. - Integral vertex shader inputs. - Range-checking of literal integers. - array.length method. - Function calls may be constant expressions. - Integral varyings must be qualified with "flat". - Interpolation and centroid qualifiers may not be applied to vertex shader inputs. Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Acked-by: Carl Worth <[email protected]>
* glsl: Make use of new _mesa_glsl_parse_state::check_version() function.Paul Berry2012-12-061-8/+7
| | | | | | | | | | | | | | | | | | Previous to this patch, we were not very consistent about the errors we generate when a shader tried to use a feature that is prohibited in the current GLSL version. Some error messages failed to mention the GLSL version currently in use (or did so inaccurately), and some error messages failed to mention the first GLSL version in which the given feature is allowed. This patch reworks all of the error checks to use the check_version() function, which produces error messages in a standard form (approximately "$FEATURE forbidden in $CURRENT_GLSL_VERSION ($REQUIRED_GLSL_VERSION required)."). Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Acked-by: Carl Worth <[email protected]>
* glsl: Make use of new _mesa_glsl_parse_state::is_version() function.Paul Berry2012-12-061-1/+1
| | | | | | Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Acked-by: Carl Worth <[email protected]>
* glsl: Simplify symbol table version checking.Paul Berry2012-12-061-1/+2
| | | | | | | | | | | Previously, we stored the GLSL language version in the glsl_symbol_table struct. But this was unnecessary--all glsl_symbol_table needs to know is whether functions and variables have separate namespaces (they do in GLSL 1.10 only). Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Acked-by: Carl Worth <[email protected]>
* glsl: Use ir_unop_f2u to convert floats to uints.Paul Berry2012-06-151-2/+1
| | | | | | | Fixes piglit tests spec/glsl-1.30/execution/{vs,fs}-float-uint-conversion on i965. Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Add a variable context to constant_expression_value().Olivier Galibert2012-05-081-1/+1
| | | | | | Signed-off-by: Olivier Galibert <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Eric Anholt <[email protected]> [v1]
* glsl: Fix regression in function out-parameter lvalue detection.Eric Anholt2012-05-041-14/+14
| | | | | | | | | | When doing the var->assigned change in f2475ca424f7e001be50f64dafa5700f6603d684, I overzealously indented the second block of code into the "if (var)" test. Revert these blocks to the way they were before, just taking advantage of "var" to avoid re-calling variable_referenced(). Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49066
* glsl: Track in each ir_variable whether it was ever assigned.Eric Anholt2012-04-191-13/+16
| | | | | | | This will be used for some compile-and-link-time error checking, where currently we've been doing error checking only at link time. Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Demote 'type' from ir_instruction to ir_rvalue and ir_variable.Kenneth Graunke2012-04-021-1/+1
| | | | | | | | | | | | | Variables have types, expression trees have types, but statements don't. Rather than have a nonsensical field that stays NULL in the base class, just move it to where it makes sense. Fix up a few places that lazily used ir_instruction even though they actually knew the particular subclass. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glsl: Convert ir_call to be a statement rather than a value.Kenneth Graunke2012-04-021-29/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Aside from ir_call, our IR is cleanly split into two classes: - Statements (typeless; used for side effects, control flow) - Values (deeply nestable, pure, typed expression trees) Unfortunately, ir_call confused all this: - For void functions, we placed ir_call directly in the instruction stream, treating it as an untyped statement. Yet, it was a subclass of ir_rvalue, and no other ir_rvalue could be used in this way. - For functions with a return value, ir_call could be placed in arbitrary expression trees. While this fit naturally with the source language, it meant that expressions might not be pure, making it difficult to transform and optimize them. To combat this, we always emitted ir_call directly in the RHS of an ir_assignment, only using a temporary variable in expression trees. Many passes relied on this assumption; the acos and atan built-ins violated it. This patch makes ir_call a statement (ir_instruction) rather than a value (ir_rvalue). Non-void calls now take a ir_dereference of a variable, and store the return value there---effectively a call and assignment rolled into one. They cannot be embedded in expressions. All expression trees are now pure, without exception. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glsl: Use ir_rvalue to represent generic error_type values.Kenneth Graunke2012-04-021-16/+16
| | | | | | | | | | | | | | | | | | | | | | Currently, ir_call can be used as either a statement (for void functions) or a value (for non-void functions). This is rather awkward, as it's the only class that can be used in both forms. A number of places use ir_call::get_error_instruction() to construct a generic value of error_type. If ir_call is to become a statement, it can no longer serve this purpose. Unfortunately, none of our classes are particularly well suited for this, and creating a new one would be rather aggrandizing. So, this patch introduces ir_rvalue::error_value(), a static method that creates an instance of the base class, ir_rvalue. This has the nice property that you can't accidentally try and access uninitialized fields (as it doesn't have any). The downside is that the base class is no longer abstract. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glsl: Combine AST-level and IR-level parameter mode checking loops.Kenneth Graunke2012-04-021-82/+85
| | | | | | | | | | | | | generate_call() and ast_function_expression::hir() both tried to verify that 'out' and 'inout' parameters used l-values. Irritatingly, it turned out that this was not redundant; both checks caught -some- cases. This patch combines the two into a single "complete" function that does all the parameter mode checking. It also adds a comment clarifying why AST-level checking is necessary in the first place. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glsl: Split up function matching and call generation a bit more.Kenneth Graunke2012-04-021-35/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We used to have one big function, match_signature_by_name, which found a matching signature, performed out-parameter conversions, and generated the ir_call. As the code for matching against built-in functions became more complicated, I split it internally, creating generate_call(). However, I left the same awkward interface. This patch splits it into three functions: 1. match_signature_by_name() This now takes a name, a list of parameters, the symbol table, and returns an ir_function_signature. Simple and one purpose: matching. 2. no_matching_function_error() Generate the "no matching function" error and list of prototypes. This was complex enough that I felt it deserved its own function. 3. generate_call() Do the out-parameter conversion and generate the ir_call. This could probably use more splitting. The caller now has a more natural workflow: find a matching signature, then either generate an error or a call. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* glsl: Emit extra errors for l-value violations in 'out' or 'inout' parametersIan Romanick2012-01-061-4/+59
| | | | | | | | | | Somethings, like pre-increment operations, were not previously caught. After the 8.0 release, this code needs some major refactoring and clean-up. It's a mess. :( Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Paul Berry <[email protected]> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=42755
* glsl: Always search for an exact function signature match.Kenneth Graunke2011-11-141-29/+63
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, we would fail to compile the following shader due to a bug in lazy built-in importing: #version 130 void main() { float f = abs(5.0); int i = abs(5); } The first call, abs(5.0), would fail to find a local signature, look through the built-ins, and import "float abs(float)". The second call, abs(5), would find the newly imported float signature in the local shader, and settle for that. Unfortunately, it failed to search the built-ins for the correct/exact signature, "int abs(int)". Thus, abs(5) ended up being a float, causing a bizarre type error when we tried to assign it to an int. Fixes piglit test builtin-overload-matching.frag. This is /not/ a candidate for stable branches, as it should only be possible to trigger this bug using GLSL 1.30's built-in functions that take integer arguments. Plus, the changes are fairly invasive. Signed-off-by: Kenneth Graunke <[email protected]>
* glsl: Split code to generate an ir_call out from match_function_by_name.Kenneth Graunke2011-11-141-165/+173
| | | | | | | | | | | | | | | | | | | | | | match_function_by_name performs two fairly separate tasks: 1. Hunt down the appropriate ir_function_signature for the callee. 2. Generate the actual ir_call (assuming we found the callee). Both of these are complicated. The first has to handle exact/inexact matches, lazy importing of built-in prototypes, different scoping rules for 1.10, 1.20+, and ES. Not to mention printing a user-friendly error message with pretty-printed "maybe you meant this" candidate signatures. The second has to deal with void/non-void functions, pre-call implicit conversions for "in" parmeters, and post-call "out" call conversions. Trying to do both in one function is just too unwieldy. Time to split. This patch purely moves the code to generate an ir_call into a separate function and reindents it. Otherwise, the code is identical. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Paul Berry <[email protected]>
* glsl: Defer initialization of built-in functions until they're needed.Kenneth Graunke2011-09-231-0/+1
| | | | | | | | | | | | | | | Very simple shaders don't actually use GLSL built-ins. For example: - gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; - gl_FragColor = vec4(0.0); Both of the shaders used by _mesa_meta_glsl_Clear() also qualify. By waiting to initialize the built-ins until the first time we need to look for a signature, we can avoid the overhead entirely in these cases. Makes piglit run roughly 18% faster (255 vs. 312 seconds). Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
* glsl: fix crash when a const is passed to texelFetchOffsetDave Airlie2011-08-251-0/+1
| | | | | | | while debugging texelFetchOffset we kept hitting the assert. Signed-off-by: Dave Airlie <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Bail after reporting an error for non-constant const_in parameters.Kenneth Graunke2011-08-251-0/+1
| | | | | | | | | | Otherwise we continue and hit the "Illegal formal parameter mode" assertion. Fixes negative compile test texelFetchOffset.frag in piglit. Signed-off-by: Kenneth Graunke <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
* glsl: Perform implicit type conversions on function call out parameters.Paul Berry2011-08-151-5/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When an out parameter undergoes an implicit type conversion, we need to store it in a temporary, and then after the call completes, convert the resulting value. In other words, we convert code like the following: void f(out int x); float value; f(value); Into IR that's equivalent to this: void f(out int x); float value; int out_parameter_conversion; f(out_parameter_conversion); value = float(out_parameter_conversion); This transformation needs to happen during ast-to-IR convertion (as opposed to, say, a lowering pass), because it is invalid IR for formal and actual parameters to have types that don't match. Fixes piglit tests spec/glsl-1.20/compiler/qualifiers/out-conversion-int-to-float.vert and spec/glsl-1.20/execution/qualifiers/vs-out-conversion-*.shader_test, and bug 39651. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=39651 Reviewed-by: Chad Versace <[email protected]>
* glsl: Constant-fold built-in functions before outputting IRPaul Berry2011-08-081-2/+14
| | | | | | | | | | | | | | Rearranged the logic for converting the ast for a function call to hir, so that we constant fold before emitting any IR. Previously we would emit some IR, and then only later detect whether we could constant fold. The unnecessary IR would usually get cleaned up by a later optimization step, however in the case of a builtin function being used to compute an array size, it was causing an assertion. Fixes Piglit test array-size-constant-relational.vert. Reviewed-by: Kenneth Graunke <[email protected]> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38625
* glsl: Emit function signatures at toplevel, even for built-ins.Paul Berry2011-08-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ast-to-hir conversion needs to emit function signatures in two circumstances: when a function declaration (or definition) is encountered, and when a built-in function is encountered. To avoid emitting a function signature in an illegal place (such as inside a function), emit_function() checked whether we were inside a function definition, and if so, emitted the signature before the function definition. However, this didn't cover the case of emitting function signatures for built-in functions when those built-in functions are called from inside the constant integer expression that specifies the length of a global array. This failed because when processing an array length, we are emitting IR into a dummy exec_list (see process_array_type() in ast_to_hir.cpp). process_array_type() later checks (via an assertion) that no instructions were emitted to the dummy exec_list, based on the reasonable assumption that we shouldn't need to emit instructions to calculate the value of a constant. This patch changes emit_function() so that it emits function signatures at toplevel in all cases. This partially fixes bug 38625 (https://bugs.freedesktop.org/show_bug.cgi?id=38625). The remainder of the fix is in the patch that follows. Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Fix conversions in array constructorsChad Versace2011-07-301-2/+10
| | | | | | | | | | | | | | | | | | | | | | Array constructors obey narrower conversion rules than other constructors [1] --- they use the implicit conversion rules [2] instead of the scalar constructor conversions [3]. But process_array_constructor() was incorrectly applying the broader rules. [1] GLSL 1.50 spec, Section 5.4.4 Array Constructors, page 52 (58 of pdf) [2] GLSL 1.50 spec, Section 4.1.10 Implicit Conversions, page 25 (31 of pdf) [3] GLSL 1.50 spec, Section 5.4.1 Conversion, page 48 (54 of pdf) To fix this, first check (with glsl_type::can_be_implicitly_converted_to) if an implicit conversion is legal before performing the conversion. Fixes: piglit:spec/glsl-1.20/compiler/structure-and-array-operations/array-ctor-implicit-conversion-bool-float.vert piglit:spec/glsl-1.20/compiler/structure-and-array-operations/array-ctor-implicit-conversion-bvec*-vec*.vert Note: This is a candidate for the 7.10 and 7.11 branches. Reviewed-by: Kenneth Graunke <[email protected]> Signed-off-by: Chad Versace <[email protected]>
* glsl: Make prototype_string publicly availableIan Romanick2011-07-201-2/+4
| | | | | | | | Also clarify the documentation for one of the parameters. Reviewed-by: Paul Berry <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Use i2u and u2i to implement constructor conversions.Kenneth Graunke2011-06-291-6/+29
| | | | | | | | | | | | | | Inspired by a patch from Bryan Cain <[email protected]>. Fixes piglit tests: - ctor-int-uint.vert - ctor-ivec4-uvec4.vert - ctor-uint-int.vert - ctor-uvec4-ivec4.vert Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
* glsl: Remove extra newline from error messageIan Romanick2011-05-031-1/+1
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