* DEALINGS IN THE SOFTWARE.
*/
-#include <cstdarg>
-
-extern "C" {
-#include <talloc.h>
-}
-
#include "ir_reader.h"
#include "glsl_parser_extras.h"
#include "glsl_types.h"
const static bool debug = false;
-static void ir_read_error(_mesa_glsl_parse_state *, s_expression *,
- const char *fmt, ...);
-static const glsl_type *read_type(_mesa_glsl_parse_state *, s_expression *);
-
-static void scan_for_prototypes(_mesa_glsl_parse_state *, exec_list *,
- s_expression *);
-static ir_function *read_function(_mesa_glsl_parse_state *, s_list *,
- bool skip_body);
-static void read_function_sig(_mesa_glsl_parse_state *, ir_function *,
- s_list *, bool skip_body);
-
-static void read_instructions(_mesa_glsl_parse_state *, exec_list *,
- s_expression *, ir_loop *);
-static ir_instruction *read_instruction(_mesa_glsl_parse_state *,
- s_expression *, ir_loop *);
-static ir_variable *read_declaration(_mesa_glsl_parse_state *, s_list *);
-static ir_if *read_if(_mesa_glsl_parse_state *, s_list *, ir_loop *);
-static ir_loop *read_loop(_mesa_glsl_parse_state *st, s_list *list);
-static ir_return *read_return(_mesa_glsl_parse_state *, s_list *);
-
-static ir_rvalue *read_rvalue(_mesa_glsl_parse_state *, s_expression *);
-static ir_assignment *read_assignment(_mesa_glsl_parse_state *, s_list *);
-static ir_expression *read_expression(_mesa_glsl_parse_state *, s_list *);
-static ir_call *read_call(_mesa_glsl_parse_state *, s_list *);
-static ir_swizzle *read_swizzle(_mesa_glsl_parse_state *, s_list *);
-static ir_constant *read_constant(_mesa_glsl_parse_state *, s_list *);
-static ir_texture *read_texture(_mesa_glsl_parse_state *, s_list *);
-
-static ir_dereference *read_dereference(_mesa_glsl_parse_state *,
- s_expression *);
-static ir_dereference_variable *
-read_var_ref(_mesa_glsl_parse_state *, s_list *);
-static ir_dereference_array *
-read_array_ref(_mesa_glsl_parse_state *, s_list *);
-static ir_dereference_record *
-read_record_ref(_mesa_glsl_parse_state *, s_list *);
+class ir_reader {
+public:
+ ir_reader(_mesa_glsl_parse_state *);
+
+ void read(exec_list *instructions, const char *src, bool scan_for_protos);
+
+private:
+ void *mem_ctx;
+ _mesa_glsl_parse_state *state;
+
+ void ir_read_error(s_expression *, const char *fmt, ...);
+
+ const glsl_type *read_type(s_expression *);
+
+ void scan_for_prototypes(exec_list *, s_expression *);
+ ir_function *read_function(s_expression *, bool skip_body);
+ void read_function_sig(ir_function *, s_expression *, bool skip_body);
+
+ void read_instructions(exec_list *, s_expression *, ir_loop *);
+ ir_instruction *read_instruction(s_expression *, ir_loop *);
+ ir_variable *read_declaration(s_expression *);
+ ir_if *read_if(s_expression *, ir_loop *);
+ ir_loop *read_loop(s_expression *);
+ ir_return *read_return(s_expression *);
+ ir_rvalue *read_rvalue(s_expression *);
+ ir_assignment *read_assignment(s_expression *);
+ ir_expression *read_expression(s_expression *);
+ ir_call *read_call(s_expression *);
+ ir_swizzle *read_swizzle(s_expression *);
+ ir_constant *read_constant(s_expression *);
+ ir_texture *read_texture(s_expression *);
+
+ ir_dereference *read_dereference(s_expression *);
+};
+
+ir_reader::ir_reader(_mesa_glsl_parse_state *state) : state(state)
+{
+ this->mem_ctx = state;
+}
void
_mesa_glsl_read_ir(_mesa_glsl_parse_state *state, exec_list *instructions,
const char *src, bool scan_for_protos)
{
- s_expression *expr = s_expression::read_expression(state, src);
+ ir_reader r(state);
+ r.read(instructions, src, scan_for_protos);
+}
+
+void
+ir_reader::read(exec_list *instructions, const char *src, bool scan_for_protos)
+{
+ s_expression *expr = s_expression::read_expression(mem_ctx, src);
if (expr == NULL) {
- ir_read_error(state, NULL, "couldn't parse S-Expression.");
+ ir_read_error(NULL, "couldn't parse S-Expression.");
return;
}
if (scan_for_protos) {
- scan_for_prototypes(state, instructions, expr);
+ scan_for_prototypes(instructions, expr);
if (state->error)
return;
}
- read_instructions(state, instructions, expr, NULL);
- talloc_free(expr);
+ read_instructions(instructions, expr, NULL);
+ ralloc_free(expr);
if (debug)
validate_ir_tree(instructions);
}
-static void
-ir_read_error(_mesa_glsl_parse_state *state, s_expression *expr,
- const char *fmt, ...)
+void
+ir_reader::ir_read_error(s_expression *expr, const char *fmt, ...)
{
va_list ap;
state->error = true;
if (state->current_function != NULL)
- state->info_log = talloc_asprintf_append(state->info_log,
- "In function %s:\n",
- state->current_function->function_name());
- state->info_log = talloc_strdup_append(state->info_log, "error: ");
+ ralloc_asprintf_append(&state->info_log, "In function %s:\n",
+ state->current_function->function_name());
+ ralloc_strcat(&state->info_log, "error: ");
va_start(ap, fmt);
- state->info_log = talloc_vasprintf_append(state->info_log, fmt, ap);
+ ralloc_vasprintf_append(&state->info_log, fmt, ap);
va_end(ap);
- state->info_log = talloc_strdup_append(state->info_log, "\n");
+ ralloc_strcat(&state->info_log, "\n");
if (expr != NULL) {
- state->info_log = talloc_strdup_append(state->info_log,
- "...in this context:\n ");
+ ralloc_strcat(&state->info_log, "...in this context:\n ");
expr->print();
- state->info_log = talloc_strdup_append(state->info_log, "\n\n");
+ ralloc_strcat(&state->info_log, "\n\n");
}
}
-static const glsl_type *
-read_type(_mesa_glsl_parse_state *st, s_expression *expr)
+const glsl_type *
+ir_reader::read_type(s_expression *expr)
{
- s_list *list = SX_AS_LIST(expr);
- if (list != NULL) {
- s_symbol *type_sym = SX_AS_SYMBOL(list->subexpressions.get_head());
- if (type_sym == NULL) {
- ir_read_error(st, expr, "expected type (array ...) or (struct ...)");
+ s_expression *s_base_type;
+ s_int *s_size;
+
+ s_pattern pat[] = { "array", s_base_type, s_size };
+ if (MATCH(expr, pat)) {
+ const glsl_type *base_type = read_type(s_base_type);
+ if (base_type == NULL) {
+ ir_read_error(NULL, "when reading base type of array type");
return NULL;
}
- if (strcmp(type_sym->value(), "array") == 0) {
- if (list->length() != 3) {
- ir_read_error(st, expr, "expected type (array <type> <int>)");
- return NULL;
- }
-
- // Read base type
- s_expression *base_expr = (s_expression*) type_sym->next;
- const glsl_type *base_type = read_type(st, base_expr);
- if (base_type == NULL) {
- ir_read_error(st, NULL, "when reading base type of array");
- return NULL;
- }
- // Read array size
- s_int *size = SX_AS_INT(base_expr->next);
- if (size == NULL) {
- ir_read_error(st, expr, "found non-integer array size");
- return NULL;
- }
-
- return glsl_type::get_array_instance(base_type, size->value());
- } else if (strcmp(type_sym->value(), "struct") == 0) {
- assert(false); // FINISHME
- } else {
- ir_read_error(st, expr, "expected (array ...) or (struct ...); "
- "found (%s ...)", type_sym->value());
- return NULL;
- }
+ return glsl_type::get_array_instance(base_type, s_size->value());
}
s_symbol *type_sym = SX_AS_SYMBOL(expr);
if (type_sym == NULL) {
- ir_read_error(st, expr, "expected <type> (symbol or list)");
+ ir_read_error(expr, "expected <type>");
return NULL;
}
- const glsl_type *type = st->symbols->get_type(type_sym->value());
+ const glsl_type *type = state->symbols->get_type(type_sym->value());
if (type == NULL)
- ir_read_error(st, expr, "invalid type: %s", type_sym->value());
+ ir_read_error(expr, "invalid type: %s", type_sym->value());
return type;
}
-static void
-scan_for_prototypes(_mesa_glsl_parse_state *st, exec_list *instructions,
- s_expression *expr)
+void
+ir_reader::scan_for_prototypes(exec_list *instructions, s_expression *expr)
{
s_list *list = SX_AS_LIST(expr);
if (list == NULL) {
- ir_read_error(st, expr, "Expected (<instruction> ...); found an atom.");
+ ir_read_error(expr, "Expected (<instruction> ...); found an atom.");
return;
}
if (tag == NULL || strcmp(tag->value(), "function") != 0)
continue; // not a (function ...); ignore it.
- ir_function *f = read_function(st, sub, true);
+ ir_function *f = read_function(sub, true);
if (f == NULL)
return;
instructions->push_tail(f);
}
}
-static ir_function *
-read_function(_mesa_glsl_parse_state *st, s_list *list, bool skip_body)
+ir_function *
+ir_reader::read_function(s_expression *expr, bool skip_body)
{
- void *ctx = st;
bool added = false;
- if (list->length() < 3) {
- ir_read_error(st, list, "Expected (function <name> (signature ...) ...)");
- return NULL;
- }
+ s_symbol *name;
- s_symbol *name = SX_AS_SYMBOL(list->subexpressions.head->next);
- if (name == NULL) {
- ir_read_error(st, list, "Expected (function <name> ...)");
+ s_pattern pat[] = { "function", name };
+ if (!PARTIAL_MATCH(expr, pat)) {
+ ir_read_error(expr, "Expected (function <name> (signature ...) ...)");
return NULL;
}
- ir_function *f = st->symbols->get_function(name->value());
+ ir_function *f = state->symbols->get_function(name->value());
if (f == NULL) {
- f = new(ctx) ir_function(name->value());
- added = st->symbols->add_function(f);
+ f = new(mem_ctx) ir_function(name->value());
+ added = state->symbols->add_function(f);
assert(added);
}
- exec_list_iterator it = list->subexpressions.iterator();
+ exec_list_iterator it = ((s_list *) expr)->subexpressions.iterator();
it.next(); // skip "function" tag
it.next(); // skip function name
for (/* nothing */; it.has_next(); it.next()) {
- s_list *siglist = SX_AS_LIST(it.get());
- if (siglist == NULL) {
- ir_read_error(st, list, "Expected (function (signature ...) ...)");
- return NULL;
- }
-
- s_symbol *tag = SX_AS_SYMBOL(siglist->subexpressions.get_head());
- if (tag == NULL || strcmp(tag->value(), "signature") != 0) {
- ir_read_error(st, siglist, "Expected (signature ...)");
- return NULL;
- }
-
- read_function_sig(st, f, siglist, skip_body);
+ s_expression *s_sig = (s_expression *) it.get();
+ read_function_sig(f, s_sig, skip_body);
}
return added ? f : NULL;
}
-static void
-read_function_sig(_mesa_glsl_parse_state *st, ir_function *f, s_list *list,
- bool skip_body)
+void
+ir_reader::read_function_sig(ir_function *f, s_expression *expr, bool skip_body)
{
- void *ctx = st;
- if (list->length() != 4) {
- ir_read_error(st, list, "Expected (signature <type> (parameters ...) "
- "(<instruction> ...))");
+ s_expression *type_expr;
+ s_list *paramlist;
+ s_list *body_list;
+
+ s_pattern pat[] = { "signature", type_expr, paramlist, body_list };
+ if (!MATCH(expr, pat)) {
+ ir_read_error(expr, "Expected (signature <type> (parameters ...) "
+ "(<instruction> ...))");
return;
}
- s_expression *type_expr = (s_expression*) list->subexpressions.head->next;
- const glsl_type *return_type = read_type(st, type_expr);
+ const glsl_type *return_type = read_type(type_expr);
if (return_type == NULL)
return;
- s_list *paramlist = SX_AS_LIST(type_expr->next);
- s_list *body_list = SX_AS_LIST(type_expr->next->next);
- if (paramlist == NULL || body_list == NULL) {
- ir_read_error(st, list, "Expected (signature <type> (parameters ...) "
- "(<instruction> ...))");
- return;
- }
s_symbol *paramtag = SX_AS_SYMBOL(paramlist->subexpressions.get_head());
if (paramtag == NULL || strcmp(paramtag->value(), "parameters") != 0) {
- ir_read_error(st, paramlist, "Expected (parameters ...)");
+ ir_read_error(paramlist, "Expected (parameters ...)");
return;
}
// Read the parameters list into a temporary place.
exec_list hir_parameters;
- st->symbols->push_scope();
+ state->symbols->push_scope();
exec_list_iterator it = paramlist->subexpressions.iterator();
for (it.next() /* skip "parameters" */; it.has_next(); it.next()) {
- s_list *decl = SX_AS_LIST(it.get());
- ir_variable *var = read_declaration(st, decl);
+ ir_variable *var = read_declaration((s_expression *) it.get());
if (var == NULL)
return;
ir_function_signature *sig = f->exact_matching_signature(&hir_parameters);
if (sig == NULL && skip_body) {
/* If scanning for prototypes, generate a new signature. */
- sig = new(ctx) ir_function_signature(return_type);
+ sig = new(mem_ctx) ir_function_signature(return_type);
sig->is_builtin = true;
f->add_signature(sig);
} else if (sig != NULL) {
const char *badvar = sig->qualifiers_match(&hir_parameters);
if (badvar != NULL) {
- ir_read_error(st, list, "function `%s' parameter `%s' qualifiers "
+ ir_read_error(expr, "function `%s' parameter `%s' qualifiers "
"don't match prototype", f->name, badvar);
return;
}
if (sig->return_type != return_type) {
- ir_read_error(st, list, "function `%s' return type doesn't "
+ ir_read_error(expr, "function `%s' return type doesn't "
"match prototype", f->name);
return;
}
} else {
/* No prototype for this body exists - skip it. */
- st->symbols->pop_scope();
+ state->symbols->pop_scope();
return;
}
assert(sig != NULL);
if (!skip_body && !body_list->subexpressions.is_empty()) {
if (sig->is_defined) {
- ir_read_error(st, list, "function %s redefined", f->name);
+ ir_read_error(expr, "function %s redefined", f->name);
return;
}
- st->current_function = sig;
- read_instructions(st, &sig->body, body_list, NULL);
- st->current_function = NULL;
+ state->current_function = sig;
+ read_instructions(&sig->body, body_list, NULL);
+ state->current_function = NULL;
sig->is_defined = true;
}
- st->symbols->pop_scope();
+ state->symbols->pop_scope();
}
-static void
-read_instructions(_mesa_glsl_parse_state *st, exec_list *instructions,
- s_expression *expr, ir_loop *loop_ctx)
+void
+ir_reader::read_instructions(exec_list *instructions, s_expression *expr,
+ ir_loop *loop_ctx)
{
// Read in a list of instructions
s_list *list = SX_AS_LIST(expr);
if (list == NULL) {
- ir_read_error(st, expr, "Expected (<instruction> ...); found an atom.");
+ ir_read_error(expr, "Expected (<instruction> ...); found an atom.");
return;
}
foreach_iter(exec_list_iterator, it, list->subexpressions) {
s_expression *sub = (s_expression*) it.get();
- ir_instruction *ir = read_instruction(st, sub, loop_ctx);
+ ir_instruction *ir = read_instruction(sub, loop_ctx);
if (ir != NULL) {
/* Global variable declarations should be moved to the top, before
* any functions that might use them. Functions are added to the
* instruction stream when scanning for prototypes, so without this
* hack, they always appear before variable declarations.
*/
- if (st->current_function == NULL && ir->as_variable() != NULL)
+ if (state->current_function == NULL && ir->as_variable() != NULL)
instructions->push_head(ir);
else
instructions->push_tail(ir);
}
-static ir_instruction *
-read_instruction(_mesa_glsl_parse_state *st, s_expression *expr,
- ir_loop *loop_ctx)
+ir_instruction *
+ir_reader::read_instruction(s_expression *expr, ir_loop *loop_ctx)
{
- void *ctx = st;
s_symbol *symbol = SX_AS_SYMBOL(expr);
if (symbol != NULL) {
if (strcmp(symbol->value(), "break") == 0 && loop_ctx != NULL)
- return new(ctx) ir_loop_jump(ir_loop_jump::jump_break);
+ return new(mem_ctx) ir_loop_jump(ir_loop_jump::jump_break);
if (strcmp(symbol->value(), "continue") == 0 && loop_ctx != NULL)
- return new(ctx) ir_loop_jump(ir_loop_jump::jump_continue);
+ return new(mem_ctx) ir_loop_jump(ir_loop_jump::jump_continue);
}
s_list *list = SX_AS_LIST(expr);
if (list == NULL || list->subexpressions.is_empty()) {
- ir_read_error(st, expr, "Invalid instruction.\n");
+ ir_read_error(expr, "Invalid instruction.\n");
return NULL;
}
s_symbol *tag = SX_AS_SYMBOL(list->subexpressions.get_head());
if (tag == NULL) {
- ir_read_error(st, expr, "expected instruction tag");
+ ir_read_error(expr, "expected instruction tag");
return NULL;
}
ir_instruction *inst = NULL;
if (strcmp(tag->value(), "declare") == 0) {
- inst = read_declaration(st, list);
+ inst = read_declaration(list);
} else if (strcmp(tag->value(), "assign") == 0) {
- inst = read_assignment(st, list);
+ inst = read_assignment(list);
} else if (strcmp(tag->value(), "if") == 0) {
- inst = read_if(st, list, loop_ctx);
+ inst = read_if(list, loop_ctx);
} else if (strcmp(tag->value(), "loop") == 0) {
- inst = read_loop(st, list);
+ inst = read_loop(list);
} else if (strcmp(tag->value(), "return") == 0) {
- inst = read_return(st, list);
+ inst = read_return(list);
} else if (strcmp(tag->value(), "function") == 0) {
- inst = read_function(st, list, false);
+ inst = read_function(list, false);
} else {
- inst = read_rvalue(st, list);
+ inst = read_rvalue(list);
if (inst == NULL)
- ir_read_error(st, NULL, "when reading instruction");
+ ir_read_error(NULL, "when reading instruction");
}
return inst;
}
-
-static ir_variable *
-read_declaration(_mesa_glsl_parse_state *st, s_list *list)
+ir_variable *
+ir_reader::read_declaration(s_expression *expr)
{
- void *ctx = st;
- if (list->length() != 4) {
- ir_read_error(st, list, "expected (declare (<qualifiers>) <type> "
- "<name>)");
- return NULL;
- }
+ s_list *s_quals;
+ s_expression *s_type;
+ s_symbol *s_name;
- s_list *quals = SX_AS_LIST(list->subexpressions.head->next);
- if (quals == NULL) {
- ir_read_error(st, list, "expected a list of variable qualifiers");
+ s_pattern pat[] = { "declare", s_quals, s_type, s_name };
+ if (!MATCH(expr, pat)) {
+ ir_read_error(expr, "expected (declare (<qualifiers>) <type> <name>)");
return NULL;
}
- s_expression *type_expr = (s_expression*) quals->next;
- const glsl_type *type = read_type(st, type_expr);
+ const glsl_type *type = read_type(s_type);
if (type == NULL)
return NULL;
- s_symbol *var_name = SX_AS_SYMBOL(type_expr->next);
- if (var_name == NULL) {
- ir_read_error(st, list, "expected variable name, found non-symbol");
- return NULL;
- }
-
- ir_variable *var = new(ctx) ir_variable(type, var_name->value(),
- ir_var_auto);
+ ir_variable *var = new(mem_ctx) ir_variable(type, s_name->value(),
+ ir_var_auto);
- foreach_iter(exec_list_iterator, it, quals->subexpressions) {
+ foreach_iter(exec_list_iterator, it, s_quals->subexpressions) {
s_symbol *qualifier = SX_AS_SYMBOL(it.get());
if (qualifier == NULL) {
- ir_read_error(st, list, "qualifier list must contain only symbols");
- delete var;
+ ir_read_error(expr, "qualifier list must contain only symbols");
return NULL;
}
var->mode = ir_var_auto;
} else if (strcmp(qualifier->value(), "in") == 0) {
var->mode = ir_var_in;
+ } else if (strcmp(qualifier->value(), "const_in") == 0) {
+ var->mode = ir_var_const_in;
} else if (strcmp(qualifier->value(), "out") == 0) {
var->mode = ir_var_out;
} else if (strcmp(qualifier->value(), "inout") == 0) {
} else if (strcmp(qualifier->value(), "noperspective") == 0) {
var->interpolation = ir_var_noperspective;
} else {
- ir_read_error(st, list, "unknown qualifier: %s", qualifier->value());
- delete var;
+ ir_read_error(expr, "unknown qualifier: %s", qualifier->value());
return NULL;
}
}
// Add the variable to the symbol table
- st->symbols->add_variable(var);
+ state->symbols->add_variable(var);
return var;
}
-static ir_if *
-read_if(_mesa_glsl_parse_state *st, s_list *list, ir_loop *loop_ctx)
+ir_if *
+ir_reader::read_if(s_expression *expr, ir_loop *loop_ctx)
{
- void *ctx = st;
- if (list->length() != 4) {
- ir_read_error(st, list, "expected (if <condition> (<then> ...) "
- "(<else> ...))");
+ s_expression *s_cond;
+ s_expression *s_then;
+ s_expression *s_else;
+
+ s_pattern pat[] = { "if", s_cond, s_then, s_else };
+ if (!MATCH(expr, pat)) {
+ ir_read_error(expr, "expected (if <condition> (<then>...) (<else>...))");
return NULL;
}
- s_expression *cond_expr = (s_expression*) list->subexpressions.head->next;
- ir_rvalue *condition = read_rvalue(st, cond_expr);
+ ir_rvalue *condition = read_rvalue(s_cond);
if (condition == NULL) {
- ir_read_error(st, NULL, "when reading condition of (if ...)");
+ ir_read_error(NULL, "when reading condition of (if ...)");
return NULL;
}
- s_expression *then_expr = (s_expression*) cond_expr->next;
- s_expression *else_expr = (s_expression*) then_expr->next;
+ ir_if *iff = new(mem_ctx) ir_if(condition);
- ir_if *iff = new(ctx) ir_if(condition);
-
- read_instructions(st, &iff->then_instructions, then_expr, loop_ctx);
- read_instructions(st, &iff->else_instructions, else_expr, loop_ctx);
- if (st->error) {
+ read_instructions(&iff->then_instructions, s_then, loop_ctx);
+ read_instructions(&iff->else_instructions, s_else, loop_ctx);
+ if (state->error) {
delete iff;
iff = NULL;
}
}
-static ir_loop *
-read_loop(_mesa_glsl_parse_state *st, s_list *list)
+ir_loop *
+ir_reader::read_loop(s_expression *expr)
{
- void *ctx = st;
- if (list->length() != 6) {
- ir_read_error(st, list, "expected (loop <counter> <from> <to> "
- "<increment> <body>)");
+ s_expression *s_counter, *s_from, *s_to, *s_inc, *s_body;
+
+ s_pattern pat[] = { "loop", s_counter, s_from, s_to, s_inc, s_body };
+ if (!MATCH(expr, pat)) {
+ ir_read_error(expr, "expected (loop <counter> <from> <to> "
+ "<increment> <body>)");
return NULL;
}
- s_expression *count_expr = (s_expression*) list->subexpressions.head->next;
- s_expression *from_expr = (s_expression*) count_expr->next;
- s_expression *to_expr = (s_expression*) from_expr->next;
- s_expression *inc_expr = (s_expression*) to_expr->next;
- s_expression *body_expr = (s_expression*) inc_expr->next;
-
// FINISHME: actually read the count/from/to fields.
- ir_loop *loop = new(ctx) ir_loop;
- read_instructions(st, &loop->body_instructions, body_expr, loop);
- if (st->error) {
+ ir_loop *loop = new(mem_ctx) ir_loop;
+ read_instructions(&loop->body_instructions, s_body, loop);
+ if (state->error) {
delete loop;
loop = NULL;
}
}
-static ir_return *
-read_return(_mesa_glsl_parse_state *st, s_list *list)
+ir_return *
+ir_reader::read_return(s_expression *expr)
{
- void *ctx = st;
- if (list->length() != 2) {
- ir_read_error(st, list, "expected (return <rvalue>)");
- return NULL;
- }
-
- s_expression *expr = (s_expression*) list->subexpressions.head->next;
-
- ir_rvalue *retval = read_rvalue(st, expr);
- if (retval == NULL) {
- ir_read_error(st, NULL, "when reading return value");
+ s_expression *s_retval;
+
+ s_pattern return_value_pat[] = { "return", s_retval};
+ s_pattern return_void_pat[] = { "return" };
+ if (MATCH(expr, return_value_pat)) {
+ ir_rvalue *retval = read_rvalue(s_retval);
+ if (retval == NULL) {
+ ir_read_error(NULL, "when reading return value");
+ return NULL;
+ }
+ return new(mem_ctx) ir_return(retval);
+ } else if (MATCH(expr, return_void_pat)) {
+ return new(mem_ctx) ir_return;
+ } else {
+ ir_read_error(expr, "expected (return <rvalue>) or (return)");
return NULL;
}
-
- return new(ctx) ir_return(retval);
}
-static ir_rvalue *
-read_rvalue(_mesa_glsl_parse_state *st, s_expression *expr)
+ir_rvalue *
+ir_reader::read_rvalue(s_expression *expr)
{
s_list *list = SX_AS_LIST(expr);
if (list == NULL || list->subexpressions.is_empty())
s_symbol *tag = SX_AS_SYMBOL(list->subexpressions.get_head());
if (tag == NULL) {
- ir_read_error(st, expr, "expected rvalue tag");
+ ir_read_error(expr, "expected rvalue tag");
return NULL;
}
- ir_rvalue *rvalue = read_dereference(st, list);
- if (rvalue != NULL || st->error)
+ ir_rvalue *rvalue = read_dereference(list);
+ if (rvalue != NULL || state->error)
return rvalue;
else if (strcmp(tag->value(), "swiz") == 0) {
- rvalue = read_swizzle(st, list);
+ rvalue = read_swizzle(list);
} else if (strcmp(tag->value(), "expression") == 0) {
- rvalue = read_expression(st, list);
+ rvalue = read_expression(list);
} else if (strcmp(tag->value(), "call") == 0) {
- rvalue = read_call(st, list);
+ rvalue = read_call(list);
} else if (strcmp(tag->value(), "constant") == 0) {
- rvalue = read_constant(st, list);
+ rvalue = read_constant(list);
} else {
- rvalue = read_texture(st, list);
- if (rvalue == NULL && !st->error)
- ir_read_error(st, expr, "unrecognized rvalue tag: %s", tag->value());
+ rvalue = read_texture(list);
+ if (rvalue == NULL && !state->error)
+ ir_read_error(expr, "unrecognized rvalue tag: %s", tag->value());
}
return rvalue;
}
-static ir_assignment *
-read_assignment(_mesa_glsl_parse_state *st, s_list *list)
+ir_assignment *
+ir_reader::read_assignment(s_expression *expr)
{
- void *ctx = st;
- if (list->length() != 5) {
- ir_read_error(st, list, "expected (assign <condition> (<write mask>) "
- "<lhs> <rhs>)");
- return NULL;
- }
+ s_expression *cond_expr = NULL;
+ s_expression *lhs_expr, *rhs_expr;
+ s_list *mask_list;
- s_expression *cond_expr = (s_expression*) list->subexpressions.head->next;
- s_list *mask_list = SX_AS_LIST(cond_expr->next);
- s_expression *lhs_expr = (s_expression*) cond_expr->next->next;
- s_expression *rhs_expr = (s_expression*) lhs_expr->next;
-
- ir_rvalue *condition = read_rvalue(st, cond_expr);
- if (condition == NULL) {
- ir_read_error(st, NULL, "when reading condition of assignment");
+ s_pattern pat4[] = { "assign", mask_list, lhs_expr, rhs_expr };
+ s_pattern pat5[] = { "assign", cond_expr, mask_list, lhs_expr, rhs_expr };
+ if (!MATCH(expr, pat4) && !MATCH(expr, pat5)) {
+ ir_read_error(expr, "expected (assign [<condition>] (<write mask>) "
+ "<lhs> <rhs>)");
return NULL;
}
- if (mask_list == NULL || mask_list->length() > 1) {
- ir_read_error(st, mask_list, "expected () or (<write mask>)");
- return NULL;
+ ir_rvalue *condition = NULL;
+ if (cond_expr != NULL) {
+ condition = read_rvalue(cond_expr);
+ if (condition == NULL) {
+ ir_read_error(NULL, "when reading condition of assignment");
+ return NULL;
+ }
}
unsigned mask = 0;
- if (mask_list->length() == 1) {
- s_symbol *mask_symbol = SX_AS_SYMBOL(mask_list->subexpressions.head);
- if (mask_symbol == NULL) {
- ir_read_error(st, list, "expected a write mask; found non-symbol");
- return NULL;
- }
+ s_symbol *mask_symbol;
+ s_pattern mask_pat[] = { mask_symbol };
+ if (MATCH(mask_list, mask_pat)) {
const char *mask_str = mask_symbol->value();
unsigned mask_length = strlen(mask_str);
if (mask_length > 4) {
- ir_read_error(st, list, "invalid write mask: %s", mask_str);
+ ir_read_error(expr, "invalid write mask: %s", mask_str);
return NULL;
}
for (unsigned i = 0; i < mask_length; i++) {
if (mask_str[i] < 'w' || mask_str[i] > 'z') {
- ir_read_error(st, list, "write mask contains invalid character: %c",
+ ir_read_error(expr, "write mask contains invalid character: %c",
mask_str[i]);
return NULL;
}
mask |= 1 << idx_map[mask_str[i] - 'w'];
}
+ } else if (!mask_list->subexpressions.is_empty()) {
+ ir_read_error(mask_list, "expected () or (<write mask>)");
+ return NULL;
}
- ir_dereference *lhs = read_dereference(st, lhs_expr);
+ ir_dereference *lhs = read_dereference(lhs_expr);
if (lhs == NULL) {
- ir_read_error(st, NULL, "when reading left-hand side of assignment");
+ ir_read_error(NULL, "when reading left-hand side of assignment");
return NULL;
}
- ir_rvalue *rhs = read_rvalue(st, rhs_expr);
+ ir_rvalue *rhs = read_rvalue(rhs_expr);
if (rhs == NULL) {
- ir_read_error(st, NULL, "when reading right-hand side of assignment");
+ ir_read_error(NULL, "when reading right-hand side of assignment");
return NULL;
}
if (mask == 0 && (lhs->type->is_vector() || lhs->type->is_scalar())) {
- ir_read_error(st, list, "non-zero write mask required.");
+ ir_read_error(expr, "non-zero write mask required.");
return NULL;
}
- return new(ctx) ir_assignment(lhs, rhs, condition, mask);
+ return new(mem_ctx) ir_assignment(lhs, rhs, condition, mask);
}
-static ir_call *
-read_call(_mesa_glsl_parse_state *st, s_list *list)
+ir_call *
+ir_reader::read_call(s_expression *expr)
{
- void *ctx = st;
- if (list->length() != 3) {
- ir_read_error(st, list, "expected (call <name> (<param> ...))");
- return NULL;
- }
+ s_symbol *name;
+ s_list *params;
- s_symbol *name = SX_AS_SYMBOL(list->subexpressions.head->next);
- s_list *params = SX_AS_LIST(list->subexpressions.head->next->next);
- if (name == NULL || params == NULL) {
- ir_read_error(st, list, "expected (call <name> (<param> ...))");
+ s_pattern pat[] = { "call", name, params };
+ if (!MATCH(expr, pat)) {
+ ir_read_error(expr, "expected (call <name> (<param> ...))");
return NULL;
}
foreach_iter(exec_list_iterator, it, params->subexpressions) {
s_expression *expr = (s_expression*) it.get();
- ir_rvalue *param = read_rvalue(st, expr);
+ ir_rvalue *param = read_rvalue(expr);
if (param == NULL) {
- ir_read_error(st, list, "when reading parameter to function call");
+ ir_read_error(expr, "when reading parameter to function call");
return NULL;
}
parameters.push_tail(param);
}
- ir_function *f = st->symbols->get_function(name->value());
+ ir_function *f = state->symbols->get_function(name->value());
if (f == NULL) {
- ir_read_error(st, list, "found call to undefined function %s",
+ ir_read_error(expr, "found call to undefined function %s",
name->value());
return NULL;
}
ir_function_signature *callee = f->matching_signature(¶meters);
if (callee == NULL) {
- ir_read_error(st, list, "couldn't find matching signature for function "
+ ir_read_error(expr, "couldn't find matching signature for function "
"%s", name->value());
return NULL;
}
- return new(ctx) ir_call(callee, ¶meters);
+ return new(mem_ctx) ir_call(callee, ¶meters);
}
-static ir_expression *
-read_expression(_mesa_glsl_parse_state *st, s_list *list)
+ir_expression *
+ir_reader::read_expression(s_expression *expr)
{
- void *ctx = st;
- const unsigned list_length = list->length();
- if (list_length < 4) {
- ir_read_error(st, list, "expected (expression <type> <operator> "
- "<operand> [<operand>])");
+ s_expression *s_type;
+ s_symbol *s_op;
+ s_expression *s_arg1;
+
+ s_pattern pat[] = { "expression", s_type, s_op, s_arg1 };
+ if (!PARTIAL_MATCH(expr, pat)) {
+ ir_read_error(expr, "expected (expression <type> <operator> "
+ "<operand> [<operand>])");
return NULL;
}
+ s_expression *s_arg2 = (s_expression *) s_arg1->next; // may be tail sentinel
- s_expression *type_expr = (s_expression*) list->subexpressions.head->next;
- const glsl_type *type = read_type(st, type_expr);
+ const glsl_type *type = read_type(s_type);
if (type == NULL)
return NULL;
/* Read the operator */
- s_symbol *op_sym = SX_AS_SYMBOL(type_expr->next);
- if (op_sym == NULL) {
- ir_read_error(st, list, "expected operator, found non-symbol");
- return NULL;
- }
-
- ir_expression_operation op = ir_expression::get_operator(op_sym->value());
+ ir_expression_operation op = ir_expression::get_operator(s_op->value());
if (op == (ir_expression_operation) -1) {
- ir_read_error(st, list, "invalid operator: %s", op_sym->value());
+ ir_read_error(expr, "invalid operator: %s", s_op->value());
return NULL;
}
- /* Now that we know the operator, check for the right number of operands */
- if (ir_expression::get_num_operands(op) == 2) {
- if (list_length != 5) {
- ir_read_error(st, list, "expected (expression <type> %s <operand> "
- " <operand>)", op_sym->value());
- return NULL;
- }
- } else {
- if (list_length != 4) {
- ir_read_error(st, list, "expected (expression <type> %s <operand>)",
- op_sym->value());
- return NULL;
- }
+ unsigned num_operands = ir_expression::get_num_operands(op);
+ if (num_operands == 1 && !s_arg1->next->is_tail_sentinel()) {
+ ir_read_error(expr, "expected (expression <type> %s <operand>)",
+ s_op->value());
+ return NULL;
}
- s_expression *exp1 = (s_expression*) (op_sym->next);
- ir_rvalue *arg1 = read_rvalue(st, exp1);
+ ir_rvalue *arg1 = read_rvalue(s_arg1);
+ ir_rvalue *arg2 = NULL;
if (arg1 == NULL) {
- ir_read_error(st, NULL, "when reading first operand of %s",
- op_sym->value());
+ ir_read_error(NULL, "when reading first operand of %s", s_op->value());
return NULL;
}
- ir_rvalue *arg2 = NULL;
- if (ir_expression::get_num_operands(op) == 2) {
- s_expression *exp2 = (s_expression*) (exp1->next);
- arg2 = read_rvalue(st, exp2);
+ if (num_operands == 2) {
+ if (s_arg2->is_tail_sentinel() || !s_arg2->next->is_tail_sentinel()) {
+ ir_read_error(expr, "expected (expression <type> %s <operand> "
+ "<operand>)", s_op->value());
+ return NULL;
+ }
+ arg2 = read_rvalue(s_arg2);
if (arg2 == NULL) {
- ir_read_error(st, NULL, "when reading second operand of %s",
- op_sym->value());
+ ir_read_error(NULL, "when reading second operand of %s",
+ s_op->value());
return NULL;
}
}
- return new(ctx) ir_expression(op, type, arg1, arg2);
+ return new(mem_ctx) ir_expression(op, type, arg1, arg2);
}
-static ir_swizzle *
-read_swizzle(_mesa_glsl_parse_state *st, s_list *list)
+ir_swizzle *
+ir_reader::read_swizzle(s_expression *expr)
{
- if (list->length() != 3) {
- ir_read_error(st, list, "expected (swiz <swizzle> <rvalue>)");
- return NULL;
- }
+ s_symbol *swiz;
+ s_expression *sub;
- s_symbol *swiz = SX_AS_SYMBOL(list->subexpressions.head->next);
- if (swiz == NULL) {
- ir_read_error(st, list, "expected a valid swizzle; found non-symbol");
+ s_pattern pat[] = { "swiz", swiz, sub };
+ if (!MATCH(expr, pat)) {
+ ir_read_error(expr, "expected (swiz <swizzle> <rvalue>)");
return NULL;
}
if (strlen(swiz->value()) > 4) {
- ir_read_error(st, list, "expected a valid swizzle; found %s",
- swiz->value());
+ ir_read_error(expr, "expected a valid swizzle; found %s", swiz->value());
return NULL;
}
- s_expression *sub = (s_expression*) swiz->next;
- ir_rvalue *rvalue = read_rvalue(st, sub);
+ ir_rvalue *rvalue = read_rvalue(sub);
if (rvalue == NULL)
return NULL;
ir_swizzle *ir = ir_swizzle::create(rvalue, swiz->value(),
rvalue->type->vector_elements);
if (ir == NULL)
- ir_read_error(st, list, "invalid swizzle");
+ ir_read_error(expr, "invalid swizzle");
return ir;
}
-static ir_constant *
-read_constant(_mesa_glsl_parse_state *st, s_list *list)
+ir_constant *
+ir_reader::read_constant(s_expression *expr)
{
- void *ctx = st;
- if (list->length() != 3) {
- ir_read_error(st, list, "expected (constant <type> (...))");
+ s_expression *type_expr;
+ s_list *values;
+
+ s_pattern pat[] = { "constant", type_expr, values };
+ if (!MATCH(expr, pat)) {
+ ir_read_error(expr, "expected (constant <type> (...))");
return NULL;
}
- s_expression *type_expr = (s_expression*) list->subexpressions.head->next;
- const glsl_type *type = read_type(st, type_expr);
+ const glsl_type *type = read_type(type_expr);
if (type == NULL)
return NULL;
- s_list *values = SX_AS_LIST(type_expr->next);
if (values == NULL) {
- ir_read_error(st, list, "expected (constant <type> (...))");
+ ir_read_error(expr, "expected (constant <type> (...))");
return NULL;
}
if (type->is_array()) {
- const unsigned elements_supplied = values->length();
- if (elements_supplied != type->length) {
- ir_read_error(st, values, "expected exactly %u array elements, "
- "given %u", type->length, elements_supplied);
- return NULL;
- }
-
+ unsigned elements_supplied = 0;
exec_list elements;
foreach_iter(exec_list_iterator, it, values->subexpressions) {
- s_expression *expr = (s_expression *) it.get();
- s_list *elt = SX_AS_LIST(expr);
- if (elt == NULL) {
- ir_read_error(st, expr, "expected (constant ...) array element");
- return NULL;
- }
-
- ir_constant *ir_elt = read_constant(st, elt);
+ s_expression *elt = (s_expression *) it.get();
+ ir_constant *ir_elt = read_constant(elt);
if (ir_elt == NULL)
return NULL;
elements.push_tail(ir_elt);
+ elements_supplied++;
+ }
+
+ if (elements_supplied != type->length) {
+ ir_read_error(values, "expected exactly %u array elements, "
+ "given %u", type->length, elements_supplied);
+ return NULL;
}
- return new(ctx) ir_constant(type, &elements);
+ return new(mem_ctx) ir_constant(type, &elements);
}
const glsl_type *const base_type = type->get_base_type();
int k = 0;
foreach_iter(exec_list_iterator, it, values->subexpressions) {
if (k >= 16) {
- ir_read_error(st, values, "expected at most 16 numbers");
+ ir_read_error(values, "expected at most 16 numbers");
return NULL;
}
if (base_type->base_type == GLSL_TYPE_FLOAT) {
s_number *value = SX_AS_NUMBER(expr);
if (value == NULL) {
- ir_read_error(st, values, "expected numbers");
+ ir_read_error(values, "expected numbers");
return NULL;
}
data.f[k] = value->fvalue();
} else {
s_int *value = SX_AS_INT(expr);
if (value == NULL) {
- ir_read_error(st, values, "expected integers");
+ ir_read_error(values, "expected integers");
return NULL;
}
break;
}
default:
- ir_read_error(st, values, "unsupported constant type");
+ ir_read_error(values, "unsupported constant type");
return NULL;
}
}
++k;
}
- return new(ctx) ir_constant(type, &data);
-}
-
-static ir_dereference *
-read_dereference(_mesa_glsl_parse_state *st, s_expression *expr)
-{
- s_list *list = SX_AS_LIST(expr);
- if (list == NULL || list->subexpressions.is_empty())
- return NULL;
-
- s_symbol *tag = SX_AS_SYMBOL(list->subexpressions.head);
- assert(tag != NULL);
-
- if (strcmp(tag->value(), "var_ref") == 0)
- return read_var_ref(st, list);
- if (strcmp(tag->value(), "array_ref") == 0)
- return read_array_ref(st, list);
- if (strcmp(tag->value(), "record_ref") == 0)
- return read_record_ref(st, list);
- return NULL;
-}
-
-static ir_dereference_variable *
-read_var_ref(_mesa_glsl_parse_state *st, s_list *list)
-{
- void *ctx = st;
- if (list->length() != 2) {
- ir_read_error(st, list, "expected (var_ref <variable name>)");
- return NULL;
- }
- s_symbol *var_name = SX_AS_SYMBOL(list->subexpressions.head->next);
- if (var_name == NULL) {
- ir_read_error(st, list, "expected (var_ref <variable name>)");
- return NULL;
- }
-
- ir_variable *var = st->symbols->get_variable(var_name->value());
- if (var == NULL) {
- ir_read_error(st, list, "undeclared variable: %s", var_name->value());
- return NULL;
- }
-
- return new(ctx) ir_dereference_variable(var);
+ return new(mem_ctx) ir_constant(type, &data);
}
-static ir_dereference_array *
-read_array_ref(_mesa_glsl_parse_state *st, s_list *list)
+ir_dereference *
+ir_reader::read_dereference(s_expression *expr)
{
- void *ctx = st;
- if (list->length() != 3) {
- ir_read_error(st, list, "expected (array_ref <rvalue> <index>)");
- return NULL;
- }
+ s_symbol *s_var;
+ s_expression *s_subject;
+ s_expression *s_index;
+ s_symbol *s_field;
+
+ s_pattern var_pat[] = { "var_ref", s_var };
+ s_pattern array_pat[] = { "array_ref", s_subject, s_index };
+ s_pattern record_pat[] = { "record_ref", s_subject, s_field };
+
+ if (MATCH(expr, var_pat)) {
+ ir_variable *var = state->symbols->get_variable(s_var->value());
+ if (var == NULL) {
+ ir_read_error(expr, "undeclared variable: %s", s_var->value());
+ return NULL;
+ }
+ return new(mem_ctx) ir_dereference_variable(var);
+ } else if (MATCH(expr, array_pat)) {
+ ir_rvalue *subject = read_rvalue(s_subject);
+ if (subject == NULL) {
+ ir_read_error(NULL, "when reading the subject of an array_ref");
+ return NULL;
+ }
- s_expression *subj_expr = (s_expression*) list->subexpressions.head->next;
- ir_rvalue *subject = read_rvalue(st, subj_expr);
- if (subject == NULL) {
- ir_read_error(st, NULL, "when reading the subject of an array_ref");
- return NULL;
+ ir_rvalue *idx = read_rvalue(s_index);
+ if (subject == NULL) {
+ ir_read_error(NULL, "when reading the index of an array_ref");
+ return NULL;
+ }
+ return new(mem_ctx) ir_dereference_array(subject, idx);
+ } else if (MATCH(expr, record_pat)) {
+ ir_rvalue *subject = read_rvalue(s_subject);
+ if (subject == NULL) {
+ ir_read_error(NULL, "when reading the subject of a record_ref");
+ return NULL;
+ }
+ return new(mem_ctx) ir_dereference_record(subject, s_field->value());
}
-
- s_expression *idx_expr = (s_expression*) subj_expr->next;
- ir_rvalue *idx = read_rvalue(st, idx_expr);
- return new(ctx) ir_dereference_array(subject, idx);
+ return NULL;
}
-static ir_dereference_record *
-read_record_ref(_mesa_glsl_parse_state *st, s_list *list)
+ir_texture *
+ir_reader::read_texture(s_expression *expr)
{
- void *ctx = st;
- if (list->length() != 3) {
- ir_read_error(st, list, "expected (record_ref <rvalue> <field>)");
- return NULL;
- }
-
- s_expression *subj_expr = (s_expression*) list->subexpressions.head->next;
- ir_rvalue *subject = read_rvalue(st, subj_expr);
- if (subject == NULL) {
- ir_read_error(st, NULL, "when reading the subject of a record_ref");
- return NULL;
- }
-
- s_symbol *field = SX_AS_SYMBOL(subj_expr->next);
- if (field == NULL) {
- ir_read_error(st, list, "expected (record_ref ... <field name>)");
+ s_symbol *tag = NULL;
+ s_expression *s_type = NULL;
+ s_expression *s_sampler = NULL;
+ s_expression *s_coord = NULL;
+ s_expression *s_offset = NULL;
+ s_expression *s_proj = NULL;
+ s_list *s_shadow = NULL;
+ s_expression *s_lod = NULL;
+
+ ir_texture_opcode op = ir_tex; /* silence warning */
+
+ s_pattern tex_pattern[] =
+ { "tex", s_type, s_sampler, s_coord, s_offset, s_proj, s_shadow };
+ s_pattern txf_pattern[] =
+ { "txf", s_type, s_sampler, s_coord, s_offset, s_lod };
+ s_pattern other_pattern[] =
+ { tag, s_type, s_sampler, s_coord, s_offset, s_proj, s_shadow, s_lod };
+
+ if (MATCH(expr, tex_pattern)) {
+ op = ir_tex;
+ } else if (MATCH(expr, txf_pattern)) {
+ op = ir_txf;
+ } else if (MATCH(expr, other_pattern)) {
+ op = ir_texture::get_opcode(tag->value());
+ if (op == -1)
+ return NULL;
+ } else {
+ ir_read_error(NULL, "unexpected texture pattern");
return NULL;
}
- return new(ctx) ir_dereference_record(subject, field->value());
-}
-
-static bool
-valid_texture_list_length(ir_texture_opcode op, s_list *list)
-{
- unsigned required_length = 7;
- if (op == ir_txf)
- required_length = 5;
- else if (op == ir_tex)
- required_length = 6;
-
- return list->length() == required_length;
-}
-static ir_texture *
-read_texture(_mesa_glsl_parse_state *st, s_list *list)
-{
- void *ctx = st;
- s_symbol *tag = SX_AS_SYMBOL(list->subexpressions.head);
- assert(tag != NULL);
-
- ir_texture_opcode op = ir_texture::get_opcode(tag->value());
- if (op == (ir_texture_opcode) -1)
- return NULL;
+ ir_texture *tex = new(mem_ctx) ir_texture(op);
- if (!valid_texture_list_length(op, list)) {
- ir_read_error(st, NULL, "invalid list size in (%s ...)", tag->value());
+ // Read return type
+ const glsl_type *type = read_type(s_type);
+ if (type == NULL) {
+ ir_read_error(NULL, "when reading type in (%s ...)",
+ tex->opcode_string());
return NULL;
}
- ir_texture *tex = new(ctx) ir_texture(op);
-
// Read sampler (must be a deref)
- s_expression *sampler_expr = (s_expression *) tag->next;
- ir_dereference *sampler = read_dereference(st, sampler_expr);
+ ir_dereference *sampler = read_dereference(s_sampler);
if (sampler == NULL) {
- ir_read_error(st, NULL, "when reading sampler in (%s ...)", tag->value());
+ ir_read_error(NULL, "when reading sampler in (%s ...)",
+ tex->opcode_string());
return NULL;
}
- tex->set_sampler(sampler);
+ tex->set_sampler(sampler, type);
// Read coordinate (any rvalue)
- s_expression *coordinate_expr = (s_expression *) sampler_expr->next;
- tex->coordinate = read_rvalue(st, coordinate_expr);
+ tex->coordinate = read_rvalue(s_coord);
if (tex->coordinate == NULL) {
- ir_read_error(st, NULL, "when reading coordinate in (%s ...)",
- tag->value());
- return NULL;
- }
-
- // Read texel offset, i.e. (0 0 0)
- s_list *offset_list = SX_AS_LIST(coordinate_expr->next);
- if (offset_list == NULL || offset_list->length() != 3) {
- ir_read_error(st, offset_list, "expected (<int> <int> <int>)");
- return NULL;
- }
- s_int *offset_x = SX_AS_INT(offset_list->subexpressions.head);
- s_int *offset_y = SX_AS_INT(offset_list->subexpressions.head->next);
- s_int *offset_z = SX_AS_INT(offset_list->subexpressions.head->next->next);
- if (offset_x == NULL || offset_y == NULL || offset_z == NULL) {
- ir_read_error(st, offset_list, "expected (<int> <int> <int>)");
+ ir_read_error(NULL, "when reading coordinate in (%s ...)",
+ tex->opcode_string());
return NULL;
}
- tex->offsets[0] = offset_x->value();
- tex->offsets[1] = offset_y->value();
- tex->offsets[2] = offset_z->value();
- if (op == ir_txf) {
- s_expression *lod_expr = (s_expression *) offset_list->next;
- tex->lod_info.lod = read_rvalue(st, lod_expr);
- if (tex->lod_info.lod == NULL) {
- ir_read_error(st, NULL, "when reading LOD in (txf ...)");
+ // Read texel offset - either 0 or an rvalue.
+ s_int *si_offset = SX_AS_INT(s_offset);
+ if (si_offset == NULL || si_offset->value() != 0) {
+ tex->offset = read_rvalue(s_offset);
+ if (tex->offset == NULL) {
+ ir_read_error(s_offset, "expected 0 or an expression");
return NULL;
}
- } else {
- s_expression *proj_expr = (s_expression *) offset_list->next;
- s_int *proj_as_int = SX_AS_INT(proj_expr);
+ }
+
+ if (op != ir_txf) {
+ s_int *proj_as_int = SX_AS_INT(s_proj);
if (proj_as_int && proj_as_int->value() == 1) {
tex->projector = NULL;
} else {
- tex->projector = read_rvalue(st, proj_expr);
+ tex->projector = read_rvalue(s_proj);
if (tex->projector == NULL) {
- ir_read_error(st, NULL, "when reading projective divide in (%s ..)",
- tag->value());
+ ir_read_error(NULL, "when reading projective divide in (%s ..)",
+ tex->opcode_string());
return NULL;
}
}
- s_list *shadow_list = SX_AS_LIST(proj_expr->next);
- if (shadow_list == NULL) {
- ir_read_error(st, NULL, "shadow comparitor must be a list");
- return NULL;
- }
- if (shadow_list->subexpressions.is_empty()) {
- tex->shadow_comparitor= NULL;
+ if (s_shadow->subexpressions.is_empty()) {
+ tex->shadow_comparitor = NULL;
} else {
- tex->shadow_comparitor = read_rvalue(st, shadow_list);
+ tex->shadow_comparitor = read_rvalue(s_shadow);
if (tex->shadow_comparitor == NULL) {
- ir_read_error(st, NULL, "when reading shadow comparitor in (%s ..)",
- tag->value());
+ ir_read_error(NULL, "when reading shadow comparitor in (%s ..)",
+ tex->opcode_string());
return NULL;
}
}
- s_expression *lod_expr = (s_expression *) shadow_list->next;
-
- switch (op) {
- case ir_txb:
- tex->lod_info.bias = read_rvalue(st, lod_expr);
- if (tex->lod_info.bias == NULL) {
- ir_read_error(st, NULL, "when reading LOD bias in (txb ...)");
- return NULL;
- }
- break;
- case ir_txl:
- tex->lod_info.lod = read_rvalue(st, lod_expr);
- if (tex->lod_info.lod == NULL) {
- ir_read_error(st, NULL, "when reading LOD in (txl ...)");
- return NULL;
- }
- break;
- case ir_txd: {
- s_list *lod_list = SX_AS_LIST(lod_expr);
- if (lod_list->length() != 2) {
- ir_read_error(st, lod_expr, "expected (dPdx dPdy) in (txd ...)");
- return NULL;
- }
- s_expression *dx_expr = (s_expression *) lod_list->subexpressions.head;
- s_expression *dy_expr = (s_expression *) dx_expr->next;
+ }
- tex->lod_info.grad.dPdx = read_rvalue(st, dx_expr);
- if (tex->lod_info.grad.dPdx == NULL) {
- ir_read_error(st, NULL, "when reading dPdx in (txd ...)");
- return NULL;
- }
- tex->lod_info.grad.dPdy = read_rvalue(st, dy_expr);
- if (tex->lod_info.grad.dPdy == NULL) {
- ir_read_error(st, NULL, "when reading dPdy in (txd ...)");
- return NULL;
- }
- break;
+ switch (op) {
+ case ir_txb:
+ tex->lod_info.bias = read_rvalue(s_lod);
+ if (tex->lod_info.bias == NULL) {
+ ir_read_error(NULL, "when reading LOD bias in (txb ...)");
+ return NULL;
+ }
+ break;
+ case ir_txl:
+ case ir_txf:
+ tex->lod_info.lod = read_rvalue(s_lod);
+ if (tex->lod_info.lod == NULL) {
+ ir_read_error(NULL, "when reading LOD in (%s ...)",
+ tex->opcode_string());
+ return NULL;
+ }
+ break;
+ case ir_txd: {
+ s_expression *s_dx, *s_dy;
+ s_pattern dxdy_pat[] = { s_dx, s_dy };
+ if (!MATCH(s_lod, dxdy_pat)) {
+ ir_read_error(s_lod, "expected (dPdx dPdy) in (txd ...)");
+ return NULL;
+ }
+ tex->lod_info.grad.dPdx = read_rvalue(s_dx);
+ if (tex->lod_info.grad.dPdx == NULL) {
+ ir_read_error(NULL, "when reading dPdx in (txd ...)");
+ return NULL;
+ }
+ tex->lod_info.grad.dPdy = read_rvalue(s_dy);
+ if (tex->lod_info.grad.dPdy == NULL) {
+ ir_read_error(NULL, "when reading dPdy in (txd ...)");
+ return NULL;
}
- default:
- // tex doesn't have any extra parameters and txf was handled earlier.
- break;
- };
+ break;
}
+ default:
+ // tex doesn't have any extra parameters.
+ break;
+ };
return tex;
}
projects / mesa.git / blobdiff