static ir_rvalue *
convert_component(ir_rvalue *src, const glsl_type *desired_type);
+bool
+apply_implicit_conversion(const glsl_type *to, ir_rvalue * &from,
+ struct _mesa_glsl_parse_state *state);
+
static unsigned
process_parameters(exec_list *instructions, exec_list *actual_parameters,
exec_list *parameters,
* formal or actual parameter list. Only the type is used.
*
* \return
- * A talloced string representing the prototype of the function.
+ * A ralloced string representing the prototype of the function.
*/
char *
prototype_string(const glsl_type *return_type, const char *name,
char *str = NULL;
if (return_type != NULL)
- str = talloc_asprintf(str, "%s ", return_type->name);
+ str = ralloc_asprintf(NULL, "%s ", return_type->name);
- str = talloc_asprintf_append(str, "%s(", name);
+ ralloc_asprintf_append(&str, "%s(", name);
const char *comma = "";
foreach_list(node, parameters) {
const ir_instruction *const param = (ir_instruction *) node;
- str = talloc_asprintf_append(str, "%s%s", comma, param->type->name);
+ ralloc_asprintf_append(&str, "%s%s", comma, param->type->name);
comma = ", ";
}
- str = talloc_strdup_append(str, ")");
+ ralloc_strcat(&str, ")");
return str;
}
static ir_rvalue *
-process_call(exec_list *instructions, ir_function *f,
- YYLTYPE *loc, exec_list *actual_parameters,
- struct _mesa_glsl_parse_state *state)
+match_function_by_name(exec_list *instructions, const char *name,
+ YYLTYPE *loc, exec_list *actual_parameters,
+ struct _mesa_glsl_parse_state *state)
{
void *ctx = state;
+ ir_function *f = state->symbols->get_function(name);
+ ir_function_signature *sig;
+
+ sig = f ? f->matching_signature(actual_parameters) : NULL;
- ir_function_signature *sig = f->matching_signature(actual_parameters);
+ /* FINISHME: This doesn't handle the case where shader X contains a
+ * FINISHME: matching signature but shader X + N contains an _exact_
+ * FINISHME: matching signature.
+ */
+ if (sig == NULL
+ && (f == NULL || state->es_shader || !f->has_user_signature())
+ && state->symbols->get_type(name) == NULL
+ && (state->language_version == 110
+ || state->symbols->get_variable(name) == NULL)) {
+ /* The current shader doesn't contain a matching function or signature.
+ * Before giving up, look for the prototype in the built-in functions.
+ */
+ for (unsigned i = 0; i < state->num_builtins_to_link; i++) {
+ ir_function *builtin;
+ builtin = state->builtins_to_link[i]->symbols->get_function(name);
+ sig = builtin ? builtin->matching_signature(actual_parameters) : NULL;
+ if (sig != NULL) {
+ if (f == NULL) {
+ f = new(ctx) ir_function(name);
+ state->symbols->add_global_function(f);
+ emit_function(state, instructions, f);
+ }
- /* The instructions param will be used when the FINISHMEs below are done */
- (void) instructions;
+ f->add_signature(sig->clone_prototype(f, NULL));
+ break;
+ }
+ }
+ }
if (sig != NULL) {
/* Verify that 'out' and 'inout' actual parameters are lvalues. This
* isn't done in ir_function::matching_signature because that function
* cannot generate the necessary diagnostics.
+ *
+ * Also, validate that 'const_in' formal parameters (an extension of our
+ * IR) correspond to ir_constant actual parameters.
*/
exec_list_iterator actual_iter = actual_parameters->iterator();
exec_list_iterator formal_iter = sig->parameters.iterator();
assert(actual != NULL);
assert(formal != NULL);
+ if (formal->mode == ir_var_const_in && !actual->as_constant()) {
+ _mesa_glsl_error(loc, state,
+ "parameter `%s' must be a constant expression",
+ formal->name);
+ }
+
if ((formal->mode == ir_var_out)
|| (formal->mode == ir_var_inout)) {
- if (! actual->is_lvalue()) {
- /* FINISHME: Log a better diagnostic here. There is no way
- * FINISHME: to tell the user which parameter is invalid.
- */
- _mesa_glsl_error(loc, state, "`%s' parameter is not lvalue",
- (formal->mode == ir_var_out) ? "out" : "inout");
+ const char *mode = NULL;
+ switch (formal->mode) {
+ case ir_var_out: mode = "out"; break;
+ case ir_var_inout: mode = "inout"; break;
+ default: assert(false); break;
+ }
+ /* FIXME: 'loc' is incorrect (as of 2011-01-21). It is always
+ * FIXME: 0:0(0).
+ */
+ if (actual->variable_referenced()
+ && actual->variable_referenced()->read_only) {
+ _mesa_glsl_error(loc, state,
+ "function parameter '%s %s' references the "
+ "read-only variable '%s'",
+ mode, formal->name,
+ actual->variable_referenced()->name);
+
+ } else if (!actual->is_lvalue()) {
+ _mesa_glsl_error(loc, state,
+ "function parameter '%s %s' is not an lvalue",
+ mode, formal->name);
}
}
ir_dereference_variable *deref;
var = new(ctx) ir_variable(sig->return_type,
- talloc_asprintf(ctx, "%s_retval",
+ ralloc_asprintf(ctx, "%s_retval",
sig->function_name()),
ir_var_temporary);
instructions->push_tail(var);
return NULL;
}
} else {
- char *str = prototype_string(NULL, f->name, actual_parameters);
+ char *str = prototype_string(NULL, name, actual_parameters);
_mesa_glsl_error(loc, state, "no matching function for call to `%s'",
str);
- talloc_free(str);
+ ralloc_free(str);
const char *prefix = "candidates are: ";
- foreach_list (node, &f->signatures) {
- ir_function_signature *sig = (ir_function_signature *) node;
- str = prototype_string(sig->return_type, f->name, &sig->parameters);
- _mesa_glsl_error(loc, state, "%s%s\n", prefix, str);
- talloc_free(str);
+ for (int i = -1; i < (int) state->num_builtins_to_link; i++) {
+ glsl_symbol_table *syms = i >= 0 ? state->builtins_to_link[i]->symbols
+ : state->symbols;
+ f = syms->get_function(name);
+ if (f == NULL)
+ continue;
- prefix = " ";
- }
+ foreach_list (node, &f->signatures) {
+ ir_function_signature *sig = (ir_function_signature *) node;
- return ir_call::get_error_instruction(ctx);
- }
-}
+ str = prototype_string(sig->return_type, f->name, &sig->parameters);
+ _mesa_glsl_error(loc, state, "%s%s\n", prefix, str);
+ ralloc_free(str);
+ prefix = " ";
+ }
-static ir_rvalue *
-match_function_by_name(exec_list *instructions, const char *name,
- YYLTYPE *loc, exec_list *actual_parameters,
- struct _mesa_glsl_parse_state *state)
-{
- void *ctx = state;
- ir_function *f = state->symbols->get_function(name);
+ }
- if (f == NULL) {
- _mesa_glsl_error(loc, state, "function `%s' undeclared", name);
return ir_call::get_error_instruction(ctx);
}
-
- /* Once we've determined that the function being called might exist, try
- * to find an overload of the function that matches the parameters.
- */
- return process_call(instructions, f, loc, actual_parameters, state);
}
static ir_rvalue *
convert_component(ir_rvalue *src, const glsl_type *desired_type)
{
- void *ctx = talloc_parent(src);
+ void *ctx = ralloc_parent(src);
const unsigned a = desired_type->base_type;
const unsigned b = src->type->base_type;
ir_expression *result = NULL;
static ir_rvalue *
dereference_component(ir_rvalue *src, unsigned component)
{
- void *ctx = talloc_parent(src);
+ void *ctx = ralloc_parent(src);
assert(component < src->type->components());
/* If the source is a constant, just create a new constant instead of a
*/
static ir_constant *
constant_record_constructor(const glsl_type *constructor_type,
- YYLTYPE *loc, exec_list *parameters,
- struct _mesa_glsl_parse_state *state)
+ exec_list *parameters, void *mem_ctx)
{
- void *ctx = state;
- bool all_parameters_are_constant = true;
-
- exec_node *node = parameters->head;
- for (unsigned i = 0; i < constructor_type->length; i++) {
- ir_instruction *ir = (ir_instruction *) node;
-
- if (node->is_tail_sentinel()) {
- _mesa_glsl_error(loc, state,
- "insufficient parameters to constructor for `%s'",
- constructor_type->name);
- return NULL;
- }
-
- if (ir->type != constructor_type->fields.structure[i].type) {
- _mesa_glsl_error(loc, state,
- "parameter type mismatch in constructor for `%s' "
- " (%s vs %s)",
- constructor_type->name,
- ir->type->name,
- constructor_type->fields.structure[i].type->name);
+ foreach_list(node, parameters) {
+ ir_constant *constant = ((ir_instruction *) node)->as_constant();
+ if (constant == NULL)
return NULL;
- }
-
- if (ir->as_constant() == NULL)
- all_parameters_are_constant = false;
-
- node = node->next;
+ node->replace_with(constant);
}
- if (!all_parameters_are_constant)
- return NULL;
-
- return new(ctx) ir_constant(constructor_type, parameters);
+ return new(mem_ctx) ir_constant(constructor_type, parameters);
}
instructions->push_tail(inst);
} else {
unsigned base_component = 0;
+ unsigned base_lhs_component = 0;
ir_constant_data data;
- unsigned constant_mask = 0;
+ unsigned constant_mask = 0, constant_components = 0;
memset(&data, 0, sizeof(data));
/* Do not try to assign more components to the vector than it has!
*/
- if ((rhs_components + base_component) > lhs_components) {
- rhs_components = lhs_components - base_component;
+ if ((rhs_components + base_lhs_component) > lhs_components) {
+ rhs_components = lhs_components - base_lhs_component;
}
const ir_constant *const c = param->as_constant();
/* Mask of fields to be written in the assignment.
*/
- constant_mask |= ((1U << rhs_components) - 1) << base_component;
- }
+ constant_mask |= ((1U << rhs_components) - 1) << base_lhs_component;
+ constant_components += rhs_components;
- /* Advance the component index by the number of components that were
- * just assigned.
+ base_component += rhs_components;
+ }
+ /* Advance the component index by the number of components
+ * that were just assigned.
*/
- base_component += rhs_components;
+ base_lhs_component += rhs_components;
}
if (constant_mask != 0) {
ir_dereference *lhs = new(ctx) ir_dereference_variable(var);
- ir_rvalue *rhs = new(ctx) ir_constant(var->type, &data);
+ const glsl_type *rhs_type = glsl_type::get_instance(var->type->base_type,
+ constant_components,
+ 1);
+ ir_rvalue *rhs = new(ctx) ir_constant(rhs_type, &data);
ir_instruction *inst =
new(ctx) ir_assignment(lhs, rhs, NULL, constant_mask);
const ir_constant *const c = param->as_constant();
if (c == NULL) {
- /* Generate a swizzle that puts the first element of the source at
- * the location of the first element of the destination.
- */
- unsigned swiz[4] = { 0, 0, 0, 0 };
- for (unsigned i = 0; i < rhs_components; i++)
- swiz[i + base_component] = i;
-
/* Mask of fields to be written in the assignment.
*/
const unsigned write_mask = ((1U << rhs_components) - 1)
<< base_component;
ir_dereference *lhs = new(ctx) ir_dereference_variable(var);
- ir_rvalue *rhs = new(ctx) ir_swizzle(param, swiz, lhs_components);
+
+ /* Generate a swizzle so that LHS and RHS sizes match.
+ */
+ ir_rvalue *rhs =
+ new(ctx) ir_swizzle(param, 0, 1, 2, 3, rhs_components);
ir_instruction *inst =
new(ctx) ir_assignment(lhs, rhs, NULL, write_mask);
assert(column_ref->type->components() >= (row_base + count));
assert(src->type->components() >= (src_base + count));
- /* Generate a swizzle that puts the first element of the source at the
- * location of the first element of the destination.
+ /* Generate a swizzle that extracts the number of components from the source
+ * that are to be assigned to the column of the matrix.
*/
- unsigned swiz[4] = { src_base, src_base, src_base, src_base };
- for (unsigned i = 0; i < count; i++)
- swiz[i + row_base] = src_base + i;
-
- ir_rvalue *const rhs =
- new(mem_ctx) ir_swizzle(src, swiz, column_ref->type->components());
+ if (count < src->type->vector_elements) {
+ src = new(mem_ctx) ir_swizzle(src,
+ src_base + 0, src_base + 1,
+ src_base + 2, src_base + 3,
+ count);
+ }
/* Mask of fields to be written in the assignment.
*/
const unsigned write_mask = ((1U << count) - 1) << row_base;
- return new(mem_ctx) ir_assignment(column_ref, rhs, NULL, write_mask);
+ return new(mem_ctx) ir_assignment(column_ref, src, NULL, write_mask);
}
new(ctx) ir_assignment(rhs_var_ref, first_param, NULL);
instructions->push_tail(inst);
+ const unsigned last_row = MIN2(src_matrix->type->vector_elements,
+ var->type->vector_elements);
+ const unsigned last_col = MIN2(src_matrix->type->matrix_columns,
+ var->type->matrix_columns);
unsigned swiz[4] = { 0, 0, 0, 0 };
- for (unsigned i = 1; i < src_matrix->type->vector_elements; i++)
+ for (unsigned i = 1; i < last_row; i++)
swiz[i] = i;
- const unsigned last_col = MIN2(src_matrix->type->matrix_columns,
- var->type->matrix_columns);
- const unsigned write_mask = (1U << var->type->vector_elements) - 1;
+ const unsigned write_mask = (1U << last_row) - 1;
for (unsigned i = 0; i < last_col; i++) {
ir_dereference *const lhs =
*/
ir_rvalue *rhs;
if (lhs->type->vector_elements != rhs_col->type->vector_elements) {
- rhs = new(ctx) ir_swizzle(rhs_col, swiz,
- lhs->type->vector_elements);
+ rhs = new(ctx) ir_swizzle(rhs_col, swiz, last_row);
} else {
rhs = rhs_col;
}
- assert(lhs->type == rhs->type);
-
ir_instruction *inst =
new(ctx) ir_assignment(lhs, rhs, NULL, write_mask);
instructions->push_tail(inst);
}
+ir_rvalue *
+emit_inline_record_constructor(const glsl_type *type,
+ exec_list *instructions,
+ exec_list *parameters,
+ void *mem_ctx)
+{
+ ir_variable *const var =
+ new(mem_ctx) ir_variable(type, "record_ctor", ir_var_temporary);
+ ir_dereference_variable *const d = new(mem_ctx) ir_dereference_variable(var);
+
+ instructions->push_tail(var);
+
+ exec_node *node = parameters->head;
+ for (unsigned i = 0; i < type->length; i++) {
+ assert(!node->is_tail_sentinel());
+
+ ir_dereference *const lhs =
+ new(mem_ctx) ir_dereference_record(d->clone(mem_ctx, NULL),
+ type->fields.structure[i].name);
+
+ ir_rvalue *const rhs = ((ir_instruction *) node)->as_rvalue();
+ assert(rhs != NULL);
+
+ ir_instruction *const assign = new(mem_ctx) ir_assignment(lhs, rhs, NULL);
+
+ instructions->push_tail(assign);
+ node = node->next;
+ }
+
+ return d;
+}
+
+
ir_rvalue *
ast_function_expression::hir(exec_list *instructions,
struct _mesa_glsl_parse_state *state)
const glsl_type *const constructor_type = type->glsl_type(& name, state);
+ /* constructor_type can be NULL if a variable with the same name as the
+ * structure has come into scope.
+ */
+ if (constructor_type == NULL) {
+ _mesa_glsl_error(& loc, state, "unknown type `%s' (structure name "
+ "may be shadowed by a variable with the same name)",
+ type->type_name);
+ return ir_call::get_error_instruction(ctx);
+ }
+
/* Constructors for samplers are illegal.
*/
& loc, &this->expressions, state);
}
+
/* There are two kinds of constructor call. Constructors for built-in
* language types, such as mat4 and vec2, are free form. The only
* requirement is that the parameters must provide enough values of the
* correct order. These constructors follow essentially the same type
* matching rules as functions.
*/
+ if (constructor_type->is_record()) {
+ exec_list actual_parameters;
+
+ process_parameters(instructions, &actual_parameters,
+ &this->expressions, state);
+
+ exec_node *node = actual_parameters.head;
+ for (unsigned i = 0; i < constructor_type->length; i++) {
+ ir_rvalue *ir = (ir_rvalue *) node;
+
+ if (node->is_tail_sentinel()) {
+ _mesa_glsl_error(&loc, state,
+ "insufficient parameters to constructor "
+ "for `%s'",
+ constructor_type->name);
+ return ir_call::get_error_instruction(ctx);
+ }
+
+ if (apply_implicit_conversion(constructor_type->fields.structure[i].type,
+ ir, state)) {
+ node->replace_with(ir);
+ } else {
+ _mesa_glsl_error(&loc, state,
+ "parameter type mismatch in constructor "
+ "for `%s.%s' (%s vs %s)",
+ constructor_type->name,
+ constructor_type->fields.structure[i].name,
+ ir->type->name,
+ constructor_type->fields.structure[i].type->name);
+ return ir_call::get_error_instruction(ctx);;
+ }
+
+ node = node->next;
+ }
+
+ if (!node->is_tail_sentinel()) {
+ _mesa_glsl_error(&loc, state, "too many parameters in constructor "
+ "for `%s'", constructor_type->name);
+ return ir_call::get_error_instruction(ctx);
+ }
+
+ ir_rvalue *const constant =
+ constant_record_constructor(constructor_type, &actual_parameters,
+ state);
+
+ return (constant != NULL)
+ ? constant
+ : emit_inline_record_constructor(constructor_type, instructions,
+ &actual_parameters, state);
+ }
+
if (!constructor_type->is_numeric() && !constructor_type->is_boolean())
return ir_call::get_error_instruction(ctx);
* "It is an error to construct matrices from other matrices. This
* is reserved for future use."
*/
- if ((state->language_version <= 110) && (matrix_parameters > 0)
+ if (state->language_version == 110 && matrix_parameters > 0
&& constructor_type->is_matrix()) {
_mesa_glsl_error(& loc, state, "cannot construct `%s' from a "
"matrix in GLSL 1.10",
process_parameters(instructions, &actual_parameters, &this->expressions,
state);
- const glsl_type *const type =
- state->symbols->get_type(id->primary_expression.identifier);
-
- if ((type != NULL) && type->is_record()) {
- ir_constant *constant =
- constant_record_constructor(type, &loc, &actual_parameters, state);
-
- if (constant != NULL)
- return constant;
- }
-
return match_function_by_name(instructions,
id->primary_expression.identifier, & loc,
&actual_parameters, state);
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