#include "ast.h"
#include "glsl_types.h"
#include "ir.h"
+#include "main/core.h" /* for MIN2 */
-inline unsigned min(unsigned a, unsigned b)
-{
- return (a < b) ? a : b;
-}
+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,
}
+/**
+ * Generate a source prototype for a function signature
+ *
+ * \param return_type Return type of the function. May be \c NULL.
+ * \param name Name of the function.
+ * \param parameters Parameter list for the function. This may be either a
+ * formal or actual parameter list. Only the type is used.
+ *
+ * \return
+ * A ralloced string representing the prototype of the function.
+ */
+char *
+prototype_string(const glsl_type *return_type, const char *name,
+ exec_list *parameters)
+{
+ char *str = NULL;
+
+ if (return_type != NULL)
+ str = ralloc_asprintf(NULL, "%s ", return_type->name);
+
+ ralloc_asprintf_append(&str, "%s(", name);
+
+ const char *comma = "";
+ foreach_list(node, parameters) {
+ const ir_instruction *const param = (ir_instruction *) node;
+
+ ralloc_asprintf_append(&str, "%s%s", comma, param->type->name);
+ comma = ", ";
+ }
+
+ 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 = talloc_parent(state);
+ void *ctx = state;
+ ir_function *f = state->symbols->get_function(name);
+ ir_function_signature *sig;
- const ir_function_signature *sig =
- f->matching_signature(actual_parameters);
+ sig = f ? f->matching_signature(actual_parameters) : NULL;
- /* The instructions param will be used when the FINISHMEs below are done */
- (void) instructions;
+ /* 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);
+ }
+
+ 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);
+ }
+ }
+
+ if (formal->type->is_numeric() || formal->type->is_boolean()) {
+ ir_rvalue *converted = convert_component(actual, formal->type);
+ actual->replace_with(converted);
}
actual_iter.next();
formal_iter.next();
}
- /* FINISHME: The list of actual parameters needs to be modified to
- * FINISHME: include any necessary conversions.
+ /* Always insert the call in the instruction stream, and return a deref
+ * of its return val if it returns a value, since we don't know if
+ * the rvalue is going to be assigned to anything or not.
*/
- return new(ctx) ir_call(sig, actual_parameters);
+ ir_call *call = new(ctx) ir_call(sig, actual_parameters);
+ if (!sig->return_type->is_void()) {
+ ir_variable *var;
+ ir_dereference_variable *deref;
+
+ var = new(ctx) ir_variable(sig->return_type,
+ ralloc_asprintf(ctx, "%s_retval",
+ sig->function_name()),
+ ir_var_temporary);
+ instructions->push_tail(var);
+
+ deref = new(ctx) ir_dereference_variable(var);
+ ir_assignment *assign = new(ctx) ir_assignment(deref, call, NULL);
+ instructions->push_tail(assign);
+ if (state->language_version >= 120)
+ var->constant_value = call->constant_expression_value();
+
+ deref = new(ctx) ir_dereference_variable(var);
+ return deref;
+ } else {
+ instructions->push_tail(call);
+ return NULL;
+ }
} else {
- /* FINISHME: Log a better error message here. G++ will show the types
- * FINISHME: of the actual parameters and the set of candidate
- * FINISHME: functions. A different error should also be logged when
- * FINISHME: multiple functions match.
- */
+ char *str = prototype_string(NULL, name, actual_parameters);
+
_mesa_glsl_error(loc, state, "no matching function for call to `%s'",
- f->name);
- return ir_call::get_error_instruction(ctx);
- }
-}
+ str);
+ ralloc_free(str);
+ const char *prefix = "candidates are: ";
-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 = talloc_parent(state);
- ir_function *f = state->symbols->get_function(name);
+ 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;
+
+ 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);
+ ralloc_free(str);
+
+ prefix = " ";
+ }
+
+ }
- 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);
}
/**
* Perform automatic type conversion of constructor parameters
+ *
+ * This implements the rules in the "Conversion and Scalar Constructors"
+ * section (GLSL 1.10 section 5.4.1), not the "Implicit Conversions" rules.
*/
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;
assert(result != NULL);
+ /* Try constant folding; it may fold in the conversion we just added. */
ir_constant *const constant = result->constant_expression_value();
return (constant != NULL) ? (ir_rvalue *) constant : (ir_rvalue *) result;
}
-
/**
* Dereference a specific component from a scalar, vector, or matrix
*/
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
YYLTYPE *loc, exec_list *parameters,
struct _mesa_glsl_parse_state *state)
{
- void *ctx = talloc_parent(state);
+ void *ctx = state;
/* Array constructors come in two forms: sized and unsized. Sized array
* constructors look like 'vec4[2](a, b)', where 'a' and 'b' are vec4
* variables. In this case the number of parameters must exactly match the
if (constructor_type->length == 0) {
constructor_type =
- glsl_type::get_array_instance(state,
- constructor_type->element_type(),
+ glsl_type::get_array_instance(constructor_type->element_type(),
parameter_count);
assert(constructor_type != NULL);
assert(constructor_type->length == parameter_count);
}
- ir_function *f = state->symbols->get_function(constructor_type->name);
-
- /* If the constructor for this type of array does not exist, generate the
- * prototype and add it to the symbol table.
- */
- if (f == NULL) {
- f = constructor_type->generate_constructor(state->symbols);
- }
-
- ir_rvalue *const r =
- process_call(instructions, f, loc, &actual_parameters, state);
-
- assert(r != NULL);
- assert(r->type->is_error() || (r->type == constructor_type));
-
- return r;
-}
-
-
-/**
- * Try to convert a record constructor to a constant expression
- */
-static ir_constant *
-constant_record_constructor(const glsl_type *constructor_type,
- YYLTYPE *loc, exec_list *parameters,
- struct _mesa_glsl_parse_state *state)
-{
- void *ctx = talloc_parent(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_sentinal()) {
- _mesa_glsl_error(loc, state,
- "insufficient parameters to constructor for `%s'",
- constructor_type->name);
- return NULL;
+ /* Type cast each parameter and, if possible, fold constants. */
+ foreach_list_safe(n, &actual_parameters) {
+ ir_rvalue *ir = (ir_rvalue *) n;
+ ir_rvalue *result = ir;
+
+ /* Apply implicit conversions (not the scalar constructor rules!) */
+ if (constructor_type->element_type()->is_float()) {
+ const glsl_type *desired_type =
+ glsl_type::get_instance(GLSL_TYPE_FLOAT,
+ ir->type->vector_elements,
+ ir->type->matrix_columns);
+ result = convert_component(ir, desired_type);
}
- 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);
- return NULL;
+ if (result->type != constructor_type->element_type()) {
+ _mesa_glsl_error(loc, state, "type error in array constructor: "
+ "expected: %s, found %s",
+ constructor_type->element_type()->name,
+ result->type->name);
}
- if (ir->as_constant() == NULL)
- all_parameters_are_constant = false;
-
- node = node->next;
- }
-
- if (!all_parameters_are_constant)
- return NULL;
-
- return new(ctx) ir_constant(constructor_type, parameters);
-}
-
+ /* Attempt to convert the parameter to a constant valued expression.
+ * After doing so, track whether or not all the parameters to the
+ * constructor are trivially constant valued expressions.
+ */
+ ir_rvalue *const constant = result->constant_expression_value();
-/**
- * Generate data for a constant matrix constructor w/a single scalar parameter
- *
- * Matrix constructors in GLSL can be passed a single scalar of the
- * approriate type. In these cases, the resulting matrix is the identity
- * matrix multipled by the specified scalar. This function generates data for
- * that matrix.
- *
- * \param type Type of the desired matrix.
- * \param initializer Scalar value used to initialize the matrix diagonal.
- * \param data Location to store the resulting matrix.
- */
-void
-generate_constructor_matrix(const glsl_type *type, ir_constant *initializer,
- ir_constant_data *data)
-{
- switch (type->base_type) {
- case GLSL_TYPE_UINT:
- case GLSL_TYPE_INT:
- for (unsigned i = 0; i < type->components(); i++)
- data->u[i] = 0;
+ if (constant != NULL)
+ result = constant;
+ else
+ all_parameters_are_constant = false;
- for (unsigned i = 0; i < type->matrix_columns; i++) {
- /* The array offset of the ith row and column of the matrix.
- */
- const unsigned idx = (i * type->vector_elements) + i;
+ ir->replace_with(result);
+ }
- data->u[idx] = initializer->value.u[0];
- }
- break;
+ if (all_parameters_are_constant)
+ return new(ctx) ir_constant(constructor_type, &actual_parameters);
- case GLSL_TYPE_FLOAT:
- for (unsigned i = 0; i < type->components(); i++)
- data->f[i] = 0;
+ ir_variable *var = new(ctx) ir_variable(constructor_type, "array_ctor",
+ ir_var_temporary);
+ instructions->push_tail(var);
- for (unsigned i = 0; i < type->matrix_columns; i++) {
- /* The array offset of the ith row and column of the matrix.
- */
- const unsigned idx = (i * type->vector_elements) + i;
+ int i = 0;
+ foreach_list(node, &actual_parameters) {
+ ir_rvalue *rhs = (ir_rvalue *) node;
+ ir_rvalue *lhs = new(ctx) ir_dereference_array(var,
+ new(ctx) ir_constant(i));
- data->f[idx] = initializer->value.f[0];
- }
-
- break;
+ ir_instruction *assignment = new(ctx) ir_assignment(lhs, rhs, NULL);
+ instructions->push_tail(assignment);
- default:
- assert(!"Should not get here.");
- break;
+ i++;
}
+
+ return new(ctx) ir_dereference_variable(var);
}
/**
- * Generate data for a constant vector constructor w/a single scalar parameter
- *
- * Vector constructors in GLSL can be passed a single scalar of the
- * approriate type. In these cases, the resulting vector contains the specified
- * value in all components. This function generates data for that vector.
- *
- * \param type Type of the desired vector.
- * \param initializer Scalar value used to initialize the vector.
- * \param data Location to store the resulting vector data.
+ * Try to convert a record constructor to a constant expression
*/
-void
-generate_constructor_vector(const glsl_type *type, ir_constant *initializer,
- ir_constant_data *data)
+static ir_constant *
+constant_record_constructor(const glsl_type *constructor_type,
+ exec_list *parameters, void *mem_ctx)
{
- switch (type->base_type) {
- case GLSL_TYPE_UINT:
- case GLSL_TYPE_INT:
- for (unsigned i = 0; i < type->components(); i++)
- data->u[i] = initializer->value.u[0];
-
- break;
-
- case GLSL_TYPE_FLOAT:
- for (unsigned i = 0; i < type->components(); i++)
- data->f[i] = initializer->value.f[0];
-
- break;
-
- case GLSL_TYPE_BOOL:
- for (unsigned i = 0; i < type->components(); i++)
- data->b[i] = initializer->value.b[0];
-
- break;
-
- default:
- assert(!"Should not get here.");
- break;
+ foreach_list(node, parameters) {
+ ir_constant *constant = ((ir_instruction *) node)->as_constant();
+ if (constant == NULL)
+ return NULL;
+ node->replace_with(constant);
}
+
+ return new(mem_ctx) ir_constant(constructor_type, parameters);
}
const ir_rvalue *const p = (ir_rvalue *) parameters->head;
assert(((ir_rvalue *)p)->as_rvalue() != NULL);
- return (p->type->is_scalar() && p->next->is_tail_sentinal());
+ return (p->type->is_scalar() && p->next->is_tail_sentinel());
}
{
assert(!parameters->is_empty());
- ir_variable *var = new(ctx) ir_variable(type,
- talloc_strdup(ctx, "vec_ctor"));
+ ir_variable *var = new(ctx) ir_variable(type, "vec_ctor", ir_var_temporary);
instructions->push_tail(var);
/* There are two kinds of vector constructors.
ir_rvalue *rhs = new(ctx) ir_swizzle(first_param, 0, 0, 0, 0,
lhs_components);
ir_dereference_variable *lhs = new(ctx) ir_dereference_variable(var);
+ const unsigned mask = (1U << lhs_components) - 1;
assert(rhs->type == lhs->type);
- ir_instruction *inst = new(ctx) ir_assignment(lhs, rhs, NULL);
+ ir_instruction *inst = new(ctx) ir_assignment(lhs, rhs, NULL, mask);
instructions->push_tail(inst);
} else {
unsigned base_component = 0;
+ unsigned base_lhs_component = 0;
+ ir_constant_data data;
+ unsigned constant_mask = 0, constant_components = 0;
+
+ memset(&data, 0, sizeof(data));
+
foreach_list(node, parameters) {
- ir_rvalue *rhs = (ir_rvalue *) node;
- unsigned rhs_components = rhs->type->components();
+ ir_rvalue *param = (ir_rvalue *) node;
+ unsigned rhs_components = param->type->components();
/* 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;
}
- /* Emit an assignment of the constructor parameter to the next set of
- * components in the temporary variable.
+ const ir_constant *const c = param->as_constant();
+ if (c != NULL) {
+ for (unsigned i = 0; i < rhs_components; i++) {
+ switch (c->type->base_type) {
+ case GLSL_TYPE_UINT:
+ data.u[i + base_component] = c->get_uint_component(i);
+ break;
+ case GLSL_TYPE_INT:
+ data.i[i + base_component] = c->get_int_component(i);
+ break;
+ case GLSL_TYPE_FLOAT:
+ data.f[i + base_component] = c->get_float_component(i);
+ break;
+ case GLSL_TYPE_BOOL:
+ data.b[i + base_component] = c->get_bool_component(i);
+ break;
+ default:
+ assert(!"Should not get here.");
+ break;
+ }
+ }
+
+ /* Mask of fields to be written in the assignment.
+ */
+ constant_mask |= ((1U << rhs_components) - 1) << base_lhs_component;
+ constant_components += rhs_components;
+
+ base_component += rhs_components;
+ }
+ /* Advance the component index by the number of components
+ * that were just assigned.
*/
- unsigned mask[4] = { 0, 0, 0, 0 };
- for (unsigned i = 0; i < rhs_components; i++) {
- mask[i] = i + base_component;
+ base_lhs_component += rhs_components;
+ }
+
+ if (constant_mask != 0) {
+ ir_dereference *lhs = new(ctx) ir_dereference_variable(var);
+ 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);
+ instructions->push_tail(inst);
+ }
+
+ base_component = 0;
+ foreach_list(node, parameters) {
+ ir_rvalue *param = (ir_rvalue *) node;
+ unsigned rhs_components = param->type->components();
+
+ /* 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;
}
+ const ir_constant *const c = param->as_constant();
+ if (c == NULL) {
+ /* Mask of fields to be written in the assignment.
+ */
+ const unsigned write_mask = ((1U << rhs_components) - 1)
+ << base_component;
- ir_rvalue *lhs_ref = new(ctx) ir_dereference_variable(var);
- ir_swizzle *lhs = new(ctx) ir_swizzle(lhs_ref, mask, rhs_components);
+ ir_dereference *lhs = new(ctx) ir_dereference_variable(var);
- ir_instruction *inst = new(ctx) ir_assignment(lhs, rhs, NULL);
- instructions->push_tail(inst);
+ /* 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);
+ instructions->push_tail(inst);
+ }
/* Advance the component index by the number of components that were
* just assigned.
ir_instruction *
assign_to_matrix_column(ir_variable *var, unsigned column, unsigned row_base,
ir_rvalue *src, unsigned src_base, unsigned count,
- TALLOC_CTX *ctx)
+ void *mem_ctx)
{
- const unsigned mask[8] = { 0, 1, 2, 3, 0, 0, 0, 0 };
-
- ir_constant *col_idx = new(ctx) ir_constant(column);
- ir_rvalue *column_ref = new(ctx) ir_dereference_array(var, col_idx);
+ ir_constant *col_idx = new(mem_ctx) ir_constant(column);
+ ir_dereference *column_ref = new(mem_ctx) ir_dereference_array(var, col_idx);
assert(column_ref->type->components() >= (row_base + count));
- ir_rvalue *lhs = new(ctx) ir_swizzle(column_ref, &mask[row_base], count);
-
assert(src->type->components() >= (src_base + count));
- ir_rvalue *rhs = new(ctx) ir_swizzle(src, &mask[src_base], count);
- return new(ctx) ir_assignment(lhs, rhs, NULL);
+ /* Generate a swizzle that extracts the number of components from the source
+ * that are to be assigned to the column of the matrix.
+ */
+ 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, src, NULL, write_mask);
}
{
assert(!parameters->is_empty());
- ir_variable *var = new(ctx) ir_variable(type,
- talloc_strdup(ctx, "mat_ctor"));
+ ir_variable *var = new(ctx) ir_variable(type, "mat_ctor", ir_var_temporary);
instructions->push_tail(var);
/* There are three kinds of matrix constructors.
* components with zero.
*/
ir_variable *rhs_var =
- new(ctx) ir_variable(glsl_type::vec4_type,
- talloc_strdup(ctx, "mat_ctor_vec"));
+ new(ctx) ir_variable(glsl_type::vec4_type, "mat_ctor_vec",
+ ir_var_temporary);
instructions->push_tail(rhs_var);
ir_constant_data zero;
NULL);
instructions->push_tail(inst);
- ir_rvalue *const rhs_ref = new(ctx) ir_dereference_variable(rhs_var);
- ir_rvalue *const x_of_rhs = new(ctx) ir_swizzle(rhs_ref, 0, 0, 0, 0, 1);
+ ir_dereference *const rhs_ref = new(ctx) ir_dereference_variable(rhs_var);
- inst = new(ctx) ir_assignment(x_of_rhs, first_param, NULL);
+ inst = new(ctx) ir_assignment(rhs_ref, first_param, NULL, 0x01);
instructions->push_tail(inst);
/* Assign the temporary vector to each column of the destination matrix
{ 1, 1, 1, 0 }
};
- const unsigned cols_to_init = min(type->matrix_columns,
- type->vector_elements);
+ const unsigned cols_to_init = MIN2(type->matrix_columns,
+ type->vector_elements);
for (unsigned i = 0; i < cols_to_init; i++) {
ir_constant *const col_idx = new(ctx) ir_constant(i);
ir_rvalue *const col_ref = new(ctx) ir_dereference_array(var, col_idx);
* identity matrix. If a matrix argument is given to a matrix
* constructor, it is an error to have any other arguments."
*/
- assert(first_param->next->is_tail_sentinal());
+ assert(first_param->next->is_tail_sentinel());
ir_rvalue *const src_matrix = first_param;
/* If the source matrix is smaller, pre-initialize the relavent parts of
* generate a temporary and copy the paramter there.
*/
ir_variable *const rhs_var =
- new(ctx) ir_variable(first_param->type,
- talloc_strdup(ctx, "mat_ctor_mat"));
+ new(ctx) ir_variable(first_param->type, "mat_ctor_mat",
+ ir_var_temporary);
instructions->push_tail(rhs_var);
ir_dereference *const rhs_var_ref =
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 < last_row; i++)
+ swiz[i] = i;
+
+ const unsigned write_mask = (1U << last_row) - 1;
- const unsigned swiz[4] = { 0, 1, 2, 3 };
- const unsigned last_col = min(src_matrix->type->matrix_columns,
- var->type->matrix_columns);
for (unsigned i = 0; i < last_col; i++) {
- ir_rvalue *const lhs_col =
+ ir_dereference *const lhs =
new(ctx) ir_dereference_array(var, new(ctx) ir_constant(i));
ir_rvalue *const rhs_col =
new(ctx) ir_dereference_array(rhs_var, new(ctx) ir_constant(i));
* It would be perfectly valid to unconditionally generate the
* swizzles, this this will typically result in a more compact IR tree.
*/
- ir_rvalue *lhs;
ir_rvalue *rhs;
- if (lhs_col->type->vector_elements < rhs_col->type->vector_elements) {
- lhs = lhs_col;
-
- rhs = new(ctx) ir_swizzle(rhs_col, swiz,
- lhs_col->type->vector_elements);
- } else if (lhs_col->type->vector_elements
- > rhs_col->type->vector_elements) {
- lhs = new(ctx) ir_swizzle(lhs_col, swiz,
- rhs_col->type->vector_elements);
- rhs = rhs_col;
+ if (lhs->type->vector_elements != rhs_col->type->vector_elements) {
+ rhs = new(ctx) ir_swizzle(rhs_col, swiz, last_row);
} else {
- lhs = lhs_col;
rhs = rhs_col;
}
- assert(lhs->type == rhs->type);
-
- ir_instruction *inst = new(ctx) ir_assignment(lhs, rhs, NULL);
+ ir_instruction *inst =
+ new(ctx) ir_assignment(lhs, rhs, NULL, write_mask);
instructions->push_tail(inst);
}
} else {
- const unsigned rows = type->matrix_columns;
- const unsigned cols = type->vector_elements;
+ const unsigned cols = type->matrix_columns;
+ const unsigned rows = type->vector_elements;
unsigned col_idx = 0;
unsigned row_idx = 0;
* generate a temporary and copy the paramter there.
*/
ir_variable *rhs_var =
- new(ctx) ir_variable(rhs->type,
- talloc_strdup(ctx, "mat_ctor_vec"));
+ new(ctx) ir_variable(rhs->type, "mat_ctor_vec", ir_var_temporary);
instructions->push_tail(rhs_var);
ir_dereference *rhs_var_ref =
* single vec4, for example, can completely fill a mat2.
*/
if (rhs_components >= components_remaining_this_column) {
- const unsigned count = min(rhs_components,
- components_remaining_this_column);
+ const unsigned count = MIN2(rhs_components,
+ components_remaining_this_column);
rhs_var_ref = new(ctx) ir_dereference_variable(rhs_var);
}
+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)
{
- void *ctx = talloc_parent(state);
+ void *ctx = state;
/* There are three sorts of function calls.
*
- * 1. contstructors - The first subexpression is an ast_type_specifier.
+ * 1. constructors - The first subexpression is an ast_type_specifier.
* 2. methods - Only the .length() method of array types.
* 3. functions - Calls to regular old functions.
*
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_numeric() || constructor_type->is_boolean()) {
- /* Total number of components of the type being constructed.
- */
- const unsigned type_components = constructor_type->components();
-
- /* Number of components from parameters that have actually been
- * consumed. This is used to perform several kinds of error checking.
- */
- unsigned components_used = 0;
-
- unsigned matrix_parameters = 0;
- unsigned nonmatrix_parameters = 0;
+ if (constructor_type->is_record()) {
exec_list actual_parameters;
- bool all_parameters_are_constant = true;
-
- /* This handles invalid constructor calls such as 'vec4 v = vec4();'
- */
- if (this->expressions.is_empty()) {
- _mesa_glsl_error(& loc, state, "too few components to construct "
- "`%s'",
- constructor_type->name);
- return ir_call::get_error_instruction(ctx);
- }
+ process_parameters(instructions, &actual_parameters,
+ &this->expressions, state);
- foreach_list (n, &this->expressions) {
- ast_node *ast = exec_node_data(ast_node, n, link);
- ir_rvalue *result =
- ast->hir(instructions, state)->as_rvalue();
+ exec_node *node = actual_parameters.head;
+ for (unsigned i = 0; i < constructor_type->length; i++) {
+ ir_rvalue *ir = (ir_rvalue *) node;
- /* From page 50 (page 56 of the PDF) of the GLSL 1.50 spec:
- *
- * "It is an error to provide extra arguments beyond this
- * last used argument."
- */
- if (components_used >= type_components) {
- _mesa_glsl_error(& loc, state, "too many parameters to `%s' "
- "constructor",
+ 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 (!result->type->is_numeric() && !result->type->is_boolean()) {
- _mesa_glsl_error(& loc, state, "cannot construct `%s' from a "
- "non-numeric data type",
- 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);;
}
- /* Count the number of matrix and nonmatrix parameters. This
- * is used below to enforce some of the constructor rules.
- */
- if (result->type->is_matrix())
- matrix_parameters++;
- else
- nonmatrix_parameters++;
+ node = node->next;
+ }
- /* Type cast the parameter and add it to the parameter list for
- * the constructor.
- */
- const glsl_type *desired_type =
- glsl_type::get_instance(constructor_type->base_type,
- result->type->vector_elements,
- result->type->matrix_columns);
- result = convert_component(result, desired_type);
-
- /* Attempt to convert the parameter to a constant valued expression.
- * After doing so, track whether or not all the parameters to the
- * constructor are trivially constant valued expressions.
- */
- ir_rvalue *const constant = result->constant_expression_value();
+ 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);
+ }
- if (constant != NULL)
- result = constant;
- else
- all_parameters_are_constant = false;
+ ir_rvalue *const constant =
+ constant_record_constructor(constructor_type, &actual_parameters,
+ state);
- actual_parameters.push_tail(result);
- components_used += result->type->components();
- }
+ 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);
+
+ /* Total number of components of the type being constructed. */
+ const unsigned type_components = constructor_type->components();
+
+ /* Number of components from parameters that have actually been
+ * consumed. This is used to perform several kinds of error checking.
+ */
+ unsigned components_used = 0;
+
+ unsigned matrix_parameters = 0;
+ unsigned nonmatrix_parameters = 0;
+ exec_list actual_parameters;
+
+ foreach_list (n, &this->expressions) {
+ ast_node *ast = exec_node_data(ast_node, n, link);
+ ir_rvalue *result = ast->hir(instructions, state)->as_rvalue();
- /* From page 28 (page 34 of the PDF) of the GLSL 1.10 spec:
+ /* From page 50 (page 56 of the PDF) of the GLSL 1.50 spec:
*
- * "It is an error to construct matrices from other matrices. This
- * is reserved for future use."
+ * "It is an error to provide extra arguments beyond this
+ * last used argument."
*/
- 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",
+ if (components_used >= type_components) {
+ _mesa_glsl_error(& loc, state, "too many parameters to `%s' "
+ "constructor",
constructor_type->name);
return ir_call::get_error_instruction(ctx);
}
- /* From page 50 (page 56 of the PDF) of the GLSL 1.50 spec:
- *
- * "If a matrix argument is given to a matrix constructor, it is
- * an error to have any other arguments."
- */
- if ((matrix_parameters > 0)
- && ((matrix_parameters + nonmatrix_parameters) > 1)
- && constructor_type->is_matrix()) {
- _mesa_glsl_error(& loc, state, "for matrix `%s' constructor, "
- "matrix must be only parameter",
+ if (!result->type->is_numeric() && !result->type->is_boolean()) {
+ _mesa_glsl_error(& loc, state, "cannot construct `%s' from a "
+ "non-numeric data type",
constructor_type->name);
return ir_call::get_error_instruction(ctx);
}
- /* From page 28 (page 34 of the PDF) of the GLSL 1.10 spec:
- *
- * "In these cases, there must be enough components provided in the
- * arguments to provide an initializer for every component in the
- * constructed value."
+ /* Count the number of matrix and nonmatrix parameters. This
+ * is used below to enforce some of the constructor rules.
*/
- if ((components_used < type_components) && (components_used != 1)) {
- _mesa_glsl_error(& loc, state, "too few components to construct "
- "`%s'",
- constructor_type->name);
- return ir_call::get_error_instruction(ctx);
+ if (result->type->is_matrix())
+ matrix_parameters++;
+ else
+ nonmatrix_parameters++;
+
+ actual_parameters.push_tail(result);
+ components_used += result->type->components();
+ }
+
+ /* From page 28 (page 34 of the PDF) of the GLSL 1.10 spec:
+ *
+ * "It is an error to construct matrices from other matrices. This
+ * is reserved for future use."
+ */
+ 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",
+ constructor_type->name);
+ return ir_call::get_error_instruction(ctx);
+ }
+
+ /* From page 50 (page 56 of the PDF) of the GLSL 1.50 spec:
+ *
+ * "If a matrix argument is given to a matrix constructor, it is
+ * an error to have any other arguments."
+ */
+ if ((matrix_parameters > 0)
+ && ((matrix_parameters + nonmatrix_parameters) > 1)
+ && constructor_type->is_matrix()) {
+ _mesa_glsl_error(& loc, state, "for matrix `%s' constructor, "
+ "matrix must be only parameter",
+ constructor_type->name);
+ return ir_call::get_error_instruction(ctx);
+ }
+
+ /* From page 28 (page 34 of the PDF) of the GLSL 1.10 spec:
+ *
+ * "In these cases, there must be enough components provided in the
+ * arguments to provide an initializer for every component in the
+ * constructed value."
+ */
+ if (components_used < type_components && components_used != 1
+ && matrix_parameters == 0) {
+ _mesa_glsl_error(& loc, state, "too few components to construct "
+ "`%s'",
+ constructor_type->name);
+ return ir_call::get_error_instruction(ctx);
+ }
+
+ /* Later, we cast each parameter to the same base type as the
+ * constructor. Since there are no non-floating point matrices, we
+ * need to break them up into a series of column vectors.
+ */
+ if (constructor_type->base_type != GLSL_TYPE_FLOAT) {
+ foreach_list_safe(n, &actual_parameters) {
+ ir_rvalue *matrix = (ir_rvalue *) n;
+
+ if (!matrix->type->is_matrix())
+ continue;
+
+ /* Create a temporary containing the matrix. */
+ ir_variable *var = new(ctx) ir_variable(matrix->type, "matrix_tmp",
+ ir_var_temporary);
+ instructions->push_tail(var);
+ instructions->push_tail(new(ctx) ir_assignment(new(ctx)
+ ir_dereference_variable(var), matrix, NULL));
+ var->constant_value = matrix->constant_expression_value();
+
+ /* Replace the matrix with dereferences of its columns. */
+ for (int i = 0; i < matrix->type->matrix_columns; i++) {
+ matrix->insert_before(new (ctx) ir_dereference_array(var,
+ new(ctx) ir_constant(i)));
+ }
+ matrix->remove();
}
+ }
+
+ bool all_parameters_are_constant = true;
+ /* Type cast each parameter and, if possible, fold constants.*/
+ foreach_list_safe(n, &actual_parameters) {
+ ir_rvalue *ir = (ir_rvalue *) n;
- /* If all of the parameters are trivially constant, create a
- * constant representing the complete collection of parameters.
+ const glsl_type *desired_type =
+ glsl_type::get_instance(constructor_type->base_type,
+ ir->type->vector_elements,
+ ir->type->matrix_columns);
+ ir_rvalue *result = convert_component(ir, desired_type);
+
+ /* Attempt to convert the parameter to a constant valued expression.
+ * After doing so, track whether or not all the parameters to the
+ * constructor are trivially constant valued expressions.
*/
- if (all_parameters_are_constant) {
- if (components_used >= type_components)
- return new(ctx) ir_constant(constructor_type,
- & actual_parameters);
+ ir_rvalue *const constant = result->constant_expression_value();
- /* The above case must handle all scalar constructors.
- */
- assert(constructor_type->is_vector()
- || constructor_type->is_matrix());
-
- /* Constructors with exactly one component are special for
- * vectors and matrices. For vectors it causes all elements of
- * the vector to be filled with the value. For matrices it
- * causes the matrix to be filled with 0 and the diagonal to be
- * filled with the value.
- */
- ir_constant_data data;
- ir_constant *const initializer =
- (ir_constant *) actual_parameters.head;
- if (constructor_type->is_matrix())
- generate_constructor_matrix(constructor_type, initializer,
- &data);
- else
- generate_constructor_vector(constructor_type, initializer,
- &data);
-
- return new(ctx) ir_constant(constructor_type, &data);
- } else if (constructor_type->is_scalar()) {
- return dereference_component((ir_rvalue *) actual_parameters.head,
- 0);
- } else if (constructor_type->is_vector()) {
- return emit_inline_vector_constructor(constructor_type,
- instructions,
- &actual_parameters,
- ctx);
- } else {
- assert(constructor_type->is_matrix());
- return emit_inline_matrix_constructor(constructor_type,
- instructions,
- &actual_parameters,
- ctx);
+ if (constant != NULL)
+ result = constant;
+ else
+ all_parameters_are_constant = false;
+
+ if (result != ir) {
+ ir->replace_with(result);
}
}
- return ir_call::get_error_instruction(ctx);
+ /* If all of the parameters are trivially constant, create a
+ * constant representing the complete collection of parameters.
+ */
+ if (all_parameters_are_constant) {
+ return new(ctx) ir_constant(constructor_type, &actual_parameters);
+ } else if (constructor_type->is_scalar()) {
+ return dereference_component((ir_rvalue *) actual_parameters.head,
+ 0);
+ } else if (constructor_type->is_vector()) {
+ return emit_inline_vector_constructor(constructor_type,
+ instructions,
+ &actual_parameters,
+ ctx);
+ } else {
+ assert(constructor_type->is_matrix());
+ return emit_inline_matrix_constructor(constructor_type,
+ instructions,
+ &actual_parameters,
+ ctx);
+ }
} else {
const ast_expression *id = subexpressions[0];
YYLTYPE loc = id->get_location();
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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