static void
detect_conflicting_assignments(struct _mesa_glsl_parse_state *state,
exec_list *instructions);
+static void
+remove_per_vertex_blocks(exec_list *instructions,
+ _mesa_glsl_parse_state *state, ir_variable_mode mode);
+
void
_mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state)
var->remove();
instructions->push_head(var);
}
+
+ /* From section 7.1 (Built-In Language Variables) of the GLSL 4.10 spec:
+ *
+ * If multiple shaders using members of a built-in block belonging to
+ * the same interface are linked together in the same program, they
+ * must all redeclare the built-in block in the same way, as described
+ * in section 4.3.7 "Interface Blocks" for interface block matching, or
+ * a link error will result.
+ *
+ * The phrase "using members of a built-in block" implies that if two
+ * shaders are linked together and one of them *does not use* any members
+ * of the built-in block, then that shader does not need to have a matching
+ * redeclaration of the built-in block.
+ *
+ * This appears to be a clarification to the behaviour established for
+ * gl_PerVertex by GLSL 1.50, therefore implement it regardless of GLSL
+ * version.
+ *
+ * The definition of "interface" in section 4.3.7 that applies here is as
+ * follows:
+ *
+ * The boundary between adjacent programmable pipeline stages: This
+ * spans all the outputs in all compilation units of the first stage
+ * and all the inputs in all compilation units of the second stage.
+ *
+ * Therefore this rule applies to both inter- and intra-stage linking.
+ *
+ * The easiest way to implement this is to check whether the shader uses
+ * gl_PerVertex right after ast-to-ir conversion, and if it doesn't, simply
+ * remove all the relevant variable declaration from the IR, so that the
+ * linker won't see them and complain about mismatches.
+ */
+ remove_per_vertex_blocks(instructions, state, ir_var_shader_in);
+ remove_per_vertex_blocks(instructions, state, ir_var_shader_out);
}
*/
ir_rvalue *
validate_assignment(struct _mesa_glsl_parse_state *state,
- const glsl_type *lhs_type, ir_rvalue *rhs,
- bool is_initializer)
+ YYLTYPE loc, const glsl_type *lhs_type,
+ ir_rvalue *rhs, bool is_initializer)
{
/* If there is already some error in the RHS, just return it. Anything
* else will lead to an avalanche of error message back to the user.
if (rhs->type == lhs_type)
return rhs;
- /* If the array element types are the same and the size of the LHS is zero,
+ /* If the array element types are the same and the LHS is unsized,
* the assignment is okay for initializers embedded in variable
* declarations.
*
* Note: Whole-array assignments are not permitted in GLSL 1.10, but this
* is handled by ir_dereference::is_lvalue.
*/
- if (is_initializer && lhs_type->is_array() && rhs->type->is_array()
- && (lhs_type->element_type() == rhs->type->element_type())
- && (lhs_type->array_size() == 0)) {
- return rhs;
+ if (lhs_type->is_unsized_array() && rhs->type->is_array()
+ && (lhs_type->element_type() == rhs->type->element_type())) {
+ if (is_initializer) {
+ return rhs;
+ } else {
+ _mesa_glsl_error(&loc, state,
+ "implicitly sized arrays cannot be assigned");
+ return NULL;
+ }
}
/* Check for implicit conversion in GLSL 1.20 */
return rhs;
}
+ _mesa_glsl_error(&loc, state,
+ "%s of type %s cannot be assigned to "
+ "variable of type %s",
+ is_initializer ? "initializer" : "value",
+ rhs->type->name, lhs_type->name);
+
return NULL;
}
ir_dereference_variable *deref = access->as_dereference_variable();
if (deref && deref->var) {
- deref->var->max_array_access = deref->type->length - 1;
+ deref->var->data.max_array_access = deref->type->length - 1;
}
}
{
void *ctx = state;
bool error_emitted = (lhs->type->is_error() || rhs->type->is_error());
+ ir_rvalue *extract_channel = NULL;
/* If the assignment LHS comes back as an ir_binop_vector_extract
* expression, move it to the RHS as an ir_triop_vector_insert.
*/
if (lhs->ir_type == ir_type_expression) {
- ir_expression *const expr = lhs->as_expression();
+ ir_expression *const lhs_expr = lhs->as_expression();
- if (unlikely(expr->operation == ir_binop_vector_extract)) {
+ if (unlikely(lhs_expr->operation == ir_binop_vector_extract)) {
ir_rvalue *new_rhs =
- validate_assignment(state, lhs->type, rhs, is_initializer);
+ validate_assignment(state, lhs_loc, lhs->type,
+ rhs, is_initializer);
if (new_rhs == NULL) {
- _mesa_glsl_error(& lhs_loc, state, "type mismatch");
return lhs;
} else {
+ /* This converts:
+ * - LHS: (expression float vector_extract <vec> <channel>)
+ * - RHS: <scalar>
+ * into:
+ * - LHS: <vec>
+ * - RHS: (expression vec2 vector_insert <vec> <channel> <scalar>)
+ *
+ * The LHS type is now a vector instead of a scalar. Since GLSL
+ * allows assignments to be used as rvalues, we need to re-extract
+ * the channel from assignment_temp when returning the rvalue.
+ */
+ extract_channel = lhs_expr->operands[1];
rhs = new(ctx) ir_expression(ir_triop_vector_insert,
- expr->operands[0]->type,
- expr->operands[0],
+ lhs_expr->operands[0]->type,
+ lhs_expr->operands[0],
new_rhs,
- expr->operands[1]);
- lhs = expr->operands[0]->clone(ctx, NULL);
+ extract_channel);
+ lhs = lhs_expr->operands[0]->clone(ctx, NULL);
}
}
}
ir_variable *lhs_var = lhs->variable_referenced();
if (lhs_var)
- lhs_var->assigned = true;
+ lhs_var->data.assigned = true;
if (!error_emitted) {
if (non_lvalue_description != NULL) {
non_lvalue_description);
error_emitted = true;
} else if (lhs->variable_referenced() != NULL
- && lhs->variable_referenced()->read_only) {
+ && lhs->variable_referenced()->data.read_only) {
_mesa_glsl_error(&lhs_loc, state,
"assignment to read-only variable '%s'",
lhs->variable_referenced()->name);
}
ir_rvalue *new_rhs =
- validate_assignment(state, lhs->type, rhs, is_initializer);
- if (new_rhs == NULL) {
- _mesa_glsl_error(& lhs_loc, state, "type mismatch");
- } else {
+ validate_assignment(state, lhs_loc, lhs->type, rhs, is_initializer);
+ if (new_rhs != NULL) {
rhs = new_rhs;
/* If the LHS array was not declared with a size, it takes it size from
* dereference of a variable. Any other case would require that the LHS
* is either not an l-value or not a whole array.
*/
- if (lhs->type->array_size() == 0) {
+ if (lhs->type->is_unsized_array()) {
ir_dereference *const d = lhs->as_dereference();
assert(d != NULL);
assert(var != NULL);
- if (var->max_array_access >= unsigned(rhs->type->array_size())) {
+ if (var->data.max_array_access >= unsigned(rhs->type->array_size())) {
/* FINISHME: This should actually log the location of the RHS. */
_mesa_glsl_error(& lhs_loc, state, "array size must be > %u due to "
"previous access",
- var->max_array_access);
+ var->data.max_array_access);
}
var->type = glsl_type::get_array_instance(lhs->type->element_type(),
rhs->type->array_size());
d->type = var->type;
}
- mark_whole_array_access(rhs);
- mark_whole_array_access(lhs);
+ if (lhs->type->is_array()) {
+ mark_whole_array_access(rhs);
+ mark_whole_array_access(lhs);
+ }
}
/* Most callers of do_assignment (assign, add_assign, pre_inc/dec,
if (!error_emitted)
instructions->push_tail(new(ctx) ir_assignment(lhs, deref_var));
+ if (extract_channel) {
+ return new(ctx) ir_expression(ir_binop_vector_extract,
+ new(ctx) ir_dereference_variable(var),
+ extract_channel->clone(ctx, NULL));
+ }
return new(ctx) ir_dereference_variable(var);
}
var = new(ctx) ir_variable(lvalue->type, "_post_incdec_tmp",
ir_var_temporary);
instructions->push_tail(var);
- var->mode = ir_var_auto;
+ var->data.mode = ir_var_auto;
instructions->push_tail(new(ctx) ir_assignment(new(ctx) ir_dereference_variable(var),
lvalue));
case GLSL_TYPE_VOID:
case GLSL_TYPE_SAMPLER:
case GLSL_TYPE_INTERFACE:
+ case GLSL_TYPE_ATOMIC_UINT:
/* I assume a comparison of a struct containing a sampler just
* ignores the sampler present in the type.
*/
!state->check_version(120, 300, &loc,
"array comparisons forbidden")) {
error_emitted = true;
+ } else if ((op[0]->type->contains_opaque() ||
+ op[1]->type->contains_opaque())) {
+ _mesa_glsl_error(&loc, state, "opaque type comparisons forbidden");
+ error_emitted = true;
}
if (error_emitted) {
state->symbols->get_variable(this->primary_expression.identifier);
if (var != NULL) {
- var->used = true;
+ var->data.used = true;
result = new(ctx) ir_dereference_variable(var);
} else {
_mesa_glsl_error(& loc, state, "`%s' undeclared",
return NULL;
}
+/**
+ * Evaluate the given exec_node (which should be an ast_node representing
+ * a single array dimension) and return its integer value.
+ */
+static const unsigned
+process_array_size(exec_node *node,
+ struct _mesa_glsl_parse_state *state)
+{
+ exec_list dummy_instructions;
+
+ ast_node *array_size = exec_node_data(ast_node, node, link);
+ ir_rvalue *const ir = array_size->hir(& dummy_instructions,
+ state);
+ YYLTYPE loc = array_size->get_location();
+
+ if (ir == NULL) {
+ _mesa_glsl_error(& loc, state,
+ "array size could not be resolved");
+ return 0;
+ }
+
+ if (!ir->type->is_integer()) {
+ _mesa_glsl_error(& loc, state,
+ "array size must be integer type");
+ return 0;
+ }
+
+ if (!ir->type->is_scalar()) {
+ _mesa_glsl_error(& loc, state,
+ "array size must be scalar type");
+ return 0;
+ }
+
+ ir_constant *const size = ir->constant_expression_value();
+ if (size == NULL) {
+ _mesa_glsl_error(& loc, state, "array size must be a "
+ "constant valued expression");
+ return 0;
+ }
+
+ if (size->value.i[0] <= 0) {
+ _mesa_glsl_error(& loc, state, "array size must be > 0");
+ return 0;
+ }
+
+ assert(size->type == ir->type);
+
+ /* If the array size is const (and we've verified that
+ * it is) then no instructions should have been emitted
+ * when we converted it to HIR. If they were emitted,
+ * then either the array size isn't const after all, or
+ * we are emitting unnecessary instructions.
+ */
+ assert(dummy_instructions.is_empty());
+
+ return size->value.u[0];
+}
static const glsl_type *
-process_array_type(YYLTYPE *loc, const glsl_type *base, ast_node *array_size,
- struct _mesa_glsl_parse_state *state)
+process_array_type(YYLTYPE *loc, const glsl_type *base,
+ ast_array_specifier *array_specifier,
+ struct _mesa_glsl_parse_state *state)
{
- unsigned length = 0;
+ const glsl_type *array_type = base;
- if (base == NULL)
- return glsl_type::error_type;
+ if (array_specifier != NULL) {
+ if (base->is_array()) {
- /* From page 19 (page 25) of the GLSL 1.20 spec:
- *
- * "Only one-dimensional arrays may be declared."
- */
- if (base->is_array()) {
- _mesa_glsl_error(loc, state,
- "invalid array of `%s' (only one-dimensional arrays "
- "may be declared)",
- base->name);
- return glsl_type::error_type;
- }
+ /* From page 19 (page 25) of the GLSL 1.20 spec:
+ *
+ * "Only one-dimensional arrays may be declared."
+ */
+ if (!state->ARB_arrays_of_arrays_enable) {
+ _mesa_glsl_error(loc, state,
+ "invalid array of `%s'"
+ "GL_ARB_arrays_of_arrays "
+ "required for defining arrays of arrays",
+ base->name);
+ return glsl_type::error_type;
+ }
- if (array_size != NULL) {
- exec_list dummy_instructions;
- ir_rvalue *const ir = array_size->hir(& dummy_instructions, state);
- YYLTYPE loc = array_size->get_location();
+ if (base->length == 0) {
+ _mesa_glsl_error(loc, state,
+ "only the outermost array dimension can "
+ "be unsized",
+ base->name);
+ return glsl_type::error_type;
+ }
+ }
- if (ir != NULL) {
- if (!ir->type->is_integer()) {
- _mesa_glsl_error(& loc, state, "array size must be integer type");
- } else if (!ir->type->is_scalar()) {
- _mesa_glsl_error(& loc, state, "array size must be scalar type");
- } else {
- ir_constant *const size = ir->constant_expression_value();
-
- if (size == NULL) {
- _mesa_glsl_error(& loc, state, "array size must be a "
- "constant valued expression");
- } else if (size->value.i[0] <= 0) {
- _mesa_glsl_error(& loc, state, "array size must be > 0");
- } else {
- assert(size->type == ir->type);
- length = size->value.u[0];
-
- /* If the array size is const (and we've verified that
- * it is) then no instructions should have been emitted
- * when we converted it to HIR. If they were emitted,
- * then either the array size isn't const after all, or
- * we are emitting unnecessary instructions.
- */
- assert(dummy_instructions.is_empty());
- }
- }
+ for (exec_node *node = array_specifier->array_dimensions.tail_pred;
+ !node->is_head_sentinel(); node = node->prev) {
+ unsigned array_size = process_array_size(node, state);
+ array_type = glsl_type::get_array_instance(array_type,
+ array_size);
}
+
+ if (array_specifier->is_unsized_array)
+ array_type = glsl_type::get_array_instance(array_type, 0);
}
- const glsl_type *array_type = glsl_type::get_array_instance(base, length);
- return array_type != NULL ? array_type : glsl_type::error_type;
+ return array_type;
}
type = state->symbols->get_type(this->type_name);
*name = this->type_name;
- if (this->is_array) {
- YYLTYPE loc = this->get_location();
- type = process_array_type(&loc, type, this->array_size, state);
- }
+ YYLTYPE loc = this->get_location();
+ type = process_array_type(&loc, type, this->array_specifier, state);
return type;
}
if (type->base_type == GLSL_TYPE_FLOAT
&& state->es_shader
- && state->target == fragment_shader
+ && state->stage == MESA_SHADER_FRAGMENT
&& this->qualifier.precision == ast_precision_none
&& state->symbols->get_variable("#default precision") == NULL) {
YYLTYPE loc = this->get_location();
* this function will produce undefined results.
*/
static bool
-is_varying_var(ir_variable *var, _mesa_glsl_parser_targets target)
+is_varying_var(ir_variable *var, gl_shader_stage target)
{
switch (target) {
- case vertex_shader:
- return var->mode == ir_var_shader_out;
- case fragment_shader:
- return var->mode == ir_var_shader_in;
+ case MESA_SHADER_VERTEX:
+ return var->data.mode == ir_var_shader_out;
+ case MESA_SHADER_FRAGMENT:
+ return var->data.mode == ir_var_shader_in;
default:
- return var->mode == ir_var_shader_out || var->mode == ir_var_shader_in;
+ return var->data.mode == ir_var_shader_out || var->data.mode == ir_var_shader_in;
}
}
ir_variable *var,
const ast_type_qualifier *qual)
{
- if (var->mode != ir_var_uniform) {
+ if (var->data.mode != ir_var_uniform) {
_mesa_glsl_error(loc, state,
"the \"binding\" qualifier only applies to uniforms");
return false;
* with an array of size N, all elements of the array from binding
* through binding + N - 1 must be within this range."
*/
- unsigned limit = 0;
- switch (state->target) {
- case vertex_shader:
- limit = ctx->Const.VertexProgram.MaxTextureImageUnits;
- break;
- case geometry_shader:
- limit = ctx->Const.GeometryProgram.MaxTextureImageUnits;
- break;
- case fragment_shader:
- limit = ctx->Const.FragmentProgram.MaxTextureImageUnits;
- break;
- }
+ unsigned limit = ctx->Const.Program[state->stage].MaxTextureImageUnits;
if (max_index >= limit) {
_mesa_glsl_error(loc, state, "layout(binding = %d) for %d samplers "
"exceeds the maximum number of texture image units "
"(%d)", qual->binding, elements, limit);
+ return false;
+ }
+ } else if (var->type->contains_atomic()) {
+ assert(ctx->Const.MaxAtomicBufferBindings <= MAX_COMBINED_ATOMIC_BUFFERS);
+ if (unsigned(qual->binding) >= ctx->Const.MaxAtomicBufferBindings) {
+ _mesa_glsl_error(loc, state, "layout(binding = %d) exceeds the "
+ " maximum number of atomic counter buffer bindings"
+ "(%d)", qual->binding,
+ ctx->Const.MaxAtomicBufferBindings);
+
return false;
}
} else {
_mesa_glsl_error(loc, state,
"the \"binding\" qualifier only applies to uniform "
- "blocks, samplers, or arrays of samplers");
+ "blocks, samplers, atomic counters, or arrays thereof");
return false;
}
}
- if ((state->target == vertex_shader && mode == ir_var_shader_in) ||
- (state->target == fragment_shader && mode == ir_var_shader_out)) {
+ if ((state->stage == MESA_SHADER_VERTEX && mode == ir_var_shader_in) ||
+ (state->stage == MESA_SHADER_FRAGMENT && mode == ir_var_shader_out)) {
_mesa_glsl_error(loc, state,
"interpolation qualifier `%s' cannot be applied to "
"vertex shader inputs or fragment shader outputs",
}
+static void
+validate_explicit_location(const struct ast_type_qualifier *qual,
+ ir_variable *var,
+ struct _mesa_glsl_parse_state *state,
+ YYLTYPE *loc)
+{
+ bool fail = false;
+
+ /* In the vertex shader only shader inputs can be given explicit
+ * locations.
+ *
+ * In the fragment shader only shader outputs can be given explicit
+ * locations.
+ */
+ switch (state->stage) {
+ case MESA_SHADER_VERTEX:
+ if (var->data.mode == ir_var_shader_in) {
+ if (!state->check_explicit_attrib_location_allowed(loc, var))
+ return;
+
+ break;
+ }
+
+ fail = true;
+ break;
+
+ case MESA_SHADER_GEOMETRY:
+ _mesa_glsl_error(loc, state,
+ "geometry shader variables cannot be given "
+ "explicit locations");
+ return;
+
+ case MESA_SHADER_FRAGMENT:
+ if (var->data.mode == ir_var_shader_out) {
+ if (!state->check_explicit_attrib_location_allowed(loc, var))
+ return;
+
+ break;
+ }
+
+ fail = true;
+ break;
+
+ case MESA_SHADER_COMPUTE:
+ _mesa_glsl_error(loc, state,
+ "compute shader variables cannot be given "
+ "explicit locations");
+ return;
+ };
+
+ if (fail) {
+ _mesa_glsl_error(loc, state,
+ "%s cannot be given an explicit location in %s shader",
+ mode_string(var),
+ _mesa_shader_stage_to_string(state->stage));
+ } else {
+ var->data.explicit_location = true;
+
+ /* This bit of silliness is needed because invalid explicit locations
+ * are supposed to be flagged during linking. Small negative values
+ * biased by VERT_ATTRIB_GENERIC0 or FRAG_RESULT_DATA0 could alias
+ * built-in values (e.g., -16+VERT_ATTRIB_GENERIC0 = VERT_ATTRIB_POS).
+ * The linker needs to be able to differentiate these cases. This
+ * ensures that negative values stay negative.
+ */
+ if (qual->location >= 0) {
+ var->data.location = (state->stage == MESA_SHADER_VERTEX)
+ ? (qual->location + VERT_ATTRIB_GENERIC0)
+ : (qual->location + FRAG_RESULT_DATA0);
+ } else {
+ var->data.location = qual->location;
+ }
+
+ if (qual->flags.q.explicit_index) {
+ /* From the GLSL 4.30 specification, section 4.4.2 (Output
+ * Layout Qualifiers):
+ *
+ * "It is also a compile-time error if a fragment shader
+ * sets a layout index to less than 0 or greater than 1."
+ *
+ * Older specifications don't mandate a behavior; we take
+ * this as a clarification and always generate the error.
+ */
+ if (qual->index < 0 || qual->index > 1) {
+ _mesa_glsl_error(loc, state,
+ "explicit index may only be 0 or 1");
+ } else {
+ var->data.explicit_index = true;
+ var->data.index = qual->index;
+ }
+ }
+ }
+
+ return;
+}
+
static void
apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
ir_variable *var,
STATIC_ASSERT(sizeof(qual->flags.q) <= sizeof(qual->flags.i));
if (qual->flags.q.invariant) {
- if (var->used) {
+ if (var->data.used) {
_mesa_glsl_error(loc, state,
"variable `%s' may not be redeclared "
"`invariant' after being used",
var->name);
} else {
- var->invariant = 1;
+ var->data.invariant = 1;
}
}
if (qual->flags.q.constant || qual->flags.q.attribute
|| qual->flags.q.uniform
- || (qual->flags.q.varying && (state->target == fragment_shader)))
- var->read_only = 1;
+ || (qual->flags.q.varying && (state->stage == MESA_SHADER_FRAGMENT)))
+ var->data.read_only = 1;
if (qual->flags.q.centroid)
- var->centroid = 1;
+ var->data.centroid = 1;
- if (qual->flags.q.attribute && state->target != vertex_shader) {
+ if (qual->flags.q.sample)
+ var->data.sample = 1;
+
+ if (qual->flags.q.attribute && state->stage != MESA_SHADER_VERTEX) {
var->type = glsl_type::error_type;
_mesa_glsl_error(loc, state,
"`attribute' variables may not be declared in the "
"%s shader",
- _mesa_glsl_shader_target_name(state->target));
+ _mesa_shader_stage_to_string(state->stage));
}
/* Section 6.1.1 (Function Calling Conventions) of the GLSL 1.10 spec says:
* the setting alone.
*/
if (qual->flags.q.in && qual->flags.q.out)
- var->mode = ir_var_function_inout;
+ var->data.mode = ir_var_function_inout;
else if (qual->flags.q.in)
- var->mode = is_parameter ? ir_var_function_in : ir_var_shader_in;
+ var->data.mode = is_parameter ? ir_var_function_in : ir_var_shader_in;
else if (qual->flags.q.attribute
- || (qual->flags.q.varying && (state->target == fragment_shader)))
- var->mode = ir_var_shader_in;
+ || (qual->flags.q.varying && (state->stage == MESA_SHADER_FRAGMENT)))
+ var->data.mode = ir_var_shader_in;
else if (qual->flags.q.out)
- var->mode = is_parameter ? ir_var_function_out : ir_var_shader_out;
- else if (qual->flags.q.varying && (state->target == vertex_shader))
- var->mode = ir_var_shader_out;
+ var->data.mode = is_parameter ? ir_var_function_out : ir_var_shader_out;
+ else if (qual->flags.q.varying && (state->stage == MESA_SHADER_VERTEX))
+ var->data.mode = ir_var_shader_out;
else if (qual->flags.q.uniform)
- var->mode = ir_var_uniform;
+ var->data.mode = ir_var_uniform;
- if (!is_parameter && is_varying_var(var, state->target)) {
+ if (!is_parameter && is_varying_var(var, state->stage)) {
/* This variable is being used to link data between shader stages (in
* pre-glsl-1.30 parlance, it's a "varying"). Check that it has a type
* that is allowed for such purposes.
}
if (state->all_invariant && (state->current_function == NULL)) {
- switch (state->target) {
- case vertex_shader:
- if (var->mode == ir_var_shader_out)
- var->invariant = true;
+ switch (state->stage) {
+ case MESA_SHADER_VERTEX:
+ if (var->data.mode == ir_var_shader_out)
+ var->data.invariant = true;
break;
- case geometry_shader:
- if ((var->mode == ir_var_shader_in)
- || (var->mode == ir_var_shader_out))
- var->invariant = true;
+ case MESA_SHADER_GEOMETRY:
+ if ((var->data.mode == ir_var_shader_in)
+ || (var->data.mode == ir_var_shader_out))
+ var->data.invariant = true;
break;
- case fragment_shader:
- if (var->mode == ir_var_shader_in)
- var->invariant = true;
+ case MESA_SHADER_FRAGMENT:
+ if (var->data.mode == ir_var_shader_in)
+ var->data.invariant = true;
break;
+ case MESA_SHADER_COMPUTE:
+ /* Invariance isn't meaningful in compute shaders. */
+ break;
}
}
- var->interpolation =
- interpret_interpolation_qualifier(qual, (ir_variable_mode) var->mode,
+ var->data.interpolation =
+ interpret_interpolation_qualifier(qual, (ir_variable_mode) var->data.mode,
state, loc);
- var->pixel_center_integer = qual->flags.q.pixel_center_integer;
- var->origin_upper_left = qual->flags.q.origin_upper_left;
+ var->data.pixel_center_integer = qual->flags.q.pixel_center_integer;
+ var->data.origin_upper_left = qual->flags.q.origin_upper_left;
if ((qual->flags.q.origin_upper_left || qual->flags.q.pixel_center_integer)
&& (strcmp(var->name, "gl_FragCoord") != 0)) {
const char *const qual_string = (qual->flags.q.origin_upper_left)
}
if (qual->flags.q.explicit_location) {
- const bool global_scope = (state->current_function == NULL);
- bool fail = false;
- const char *string = "";
-
- /* In the vertex shader only shader inputs can be given explicit
- * locations.
- *
- * In the fragment shader only shader outputs can be given explicit
- * locations.
- */
- switch (state->target) {
- case vertex_shader:
- if (!global_scope || (var->mode != ir_var_shader_in)) {
- fail = true;
- string = "input";
- }
- break;
-
- case geometry_shader:
- _mesa_glsl_error(loc, state,
- "geometry shader variables cannot be given "
- "explicit locations");
- break;
-
- case fragment_shader:
- if (!global_scope || (var->mode != ir_var_shader_out)) {
- fail = true;
- string = "output";
- }
- break;
- };
-
- if (fail) {
- _mesa_glsl_error(loc, state,
- "only %s shader %s variables can be given an "
- "explicit location",
- _mesa_glsl_shader_target_name(state->target),
- string);
- } else {
- var->explicit_location = true;
-
- /* This bit of silliness is needed because invalid explicit locations
- * are supposed to be flagged during linking. Small negative values
- * biased by VERT_ATTRIB_GENERIC0 or FRAG_RESULT_DATA0 could alias
- * built-in values (e.g., -16+VERT_ATTRIB_GENERIC0 = VERT_ATTRIB_POS).
- * The linker needs to be able to differentiate these cases. This
- * ensures that negative values stay negative.
- */
- if (qual->location >= 0) {
- var->location = (state->target == vertex_shader)
- ? (qual->location + VERT_ATTRIB_GENERIC0)
- : (qual->location + FRAG_RESULT_DATA0);
- } else {
- var->location = qual->location;
- }
-
- if (qual->flags.q.explicit_index) {
- /* From the GLSL 4.30 specification, section 4.4.2 (Output
- * Layout Qualifiers):
- *
- * "It is also a compile-time error if a fragment shader
- * sets a layout index to less than 0 or greater than 1."
- *
- * Older specifications don't mandate a behavior; we take
- * this as a clarification and always generate the error.
- */
- if (qual->index < 0 || qual->index > 1) {
- _mesa_glsl_error(loc, state,
- "explicit index may only be 0 or 1");
- } else {
- var->explicit_index = true;
- var->index = qual->index;
- }
- }
- }
+ validate_explicit_location(qual, var, state, loc);
} else if (qual->flags.q.explicit_index) {
_mesa_glsl_error(loc, state,
"explicit index requires explicit location");
if (qual->flags.q.explicit_binding &&
validate_binding_qualifier(state, loc, var, qual)) {
- var->explicit_binding = true;
- var->binding = qual->binding;
+ var->data.explicit_binding = true;
+ var->data.binding = qual->binding;
+ }
+
+ if (var->type->contains_atomic()) {
+ if (var->data.mode == ir_var_uniform) {
+ if (var->data.explicit_binding) {
+ unsigned *offset =
+ &state->atomic_counter_offsets[var->data.binding];
+
+ if (*offset % ATOMIC_COUNTER_SIZE)
+ _mesa_glsl_error(loc, state,
+ "misaligned atomic counter offset");
+
+ var->data.atomic.offset = *offset;
+ *offset += var->type->atomic_size();
+
+ } else {
+ _mesa_glsl_error(loc, state,
+ "atomic counters require explicit binding point");
+ }
+ } else if (var->data.mode != ir_var_function_in) {
+ _mesa_glsl_error(loc, state, "atomic counters may only be declared as "
+ "function parameters or uniform-qualified "
+ "global variables");
+ }
}
/* Does the declaration use the deprecated 'attribute' or 'varying'
"gl_FragDepth");
}
if (qual->flags.q.depth_any)
- var->depth_layout = ir_depth_layout_any;
+ var->data.depth_layout = ir_depth_layout_any;
else if (qual->flags.q.depth_greater)
- var->depth_layout = ir_depth_layout_greater;
+ var->data.depth_layout = ir_depth_layout_greater;
else if (qual->flags.q.depth_less)
- var->depth_layout = ir_depth_layout_less;
+ var->data.depth_layout = ir_depth_layout_less;
else if (qual->flags.q.depth_unchanged)
- var->depth_layout = ir_depth_layout_unchanged;
+ var->data.depth_layout = ir_depth_layout_unchanged;
else
- var->depth_layout = ir_depth_layout_none;
+ var->data.depth_layout = ir_depth_layout_none;
if (qual->flags.q.std140 ||
qual->flags.q.packed ||
* later re-declare the same name as an array of the same
* type and specify a size."
*/
- if ((earlier->type->array_size() == 0)
- && var->type->is_array()
+ if (earlier->type->is_unsized_array() && var->type->is_array()
&& (var->type->element_type() == earlier->type->element_type())) {
/* FINISHME: This doesn't match the qualifiers on the two
* FINISHME: declarations. It's not 100% clear whether this is
const unsigned size = unsigned(var->type->array_size());
check_builtin_array_max_size(var->name, size, loc, state);
- if ((size > 0) && (size <= earlier->max_array_access)) {
+ if ((size > 0) && (size <= earlier->data.max_array_access)) {
_mesa_glsl_error(& loc, state, "array size must be > %u due to "
"previous access",
- earlier->max_array_access);
+ earlier->data.max_array_access);
}
earlier->type = var->type;
state->is_version(150, 0))
&& strcmp(var->name, "gl_FragCoord") == 0
&& earlier->type == var->type
- && earlier->mode == var->mode) {
+ && earlier->data.mode == var->data.mode) {
/* Allow redeclaration of gl_FragCoord for ARB_fcc layout
* qualifiers.
*/
- earlier->origin_upper_left = var->origin_upper_left;
- earlier->pixel_center_integer = var->pixel_center_integer;
+ earlier->data.origin_upper_left = var->data.origin_upper_left;
+ earlier->data.pixel_center_integer = var->data.pixel_center_integer;
/* According to section 4.3.7 of the GLSL 1.30 spec,
* the following built-in varaibles can be redeclared with an
|| strcmp(var->name, "gl_Color") == 0
|| strcmp(var->name, "gl_SecondaryColor") == 0)
&& earlier->type == var->type
- && earlier->mode == var->mode) {
- earlier->interpolation = var->interpolation;
+ && earlier->data.mode == var->data.mode) {
+ earlier->data.interpolation = var->data.interpolation;
/* Layout qualifiers for gl_FragDepth. */
} else if ((state->AMD_conservative_depth_enable ||
state->ARB_conservative_depth_enable)
&& strcmp(var->name, "gl_FragDepth") == 0
&& earlier->type == var->type
- && earlier->mode == var->mode) {
+ && earlier->data.mode == var->data.mode) {
/** From the AMD_conservative_depth spec:
* Within any shader, the first redeclarations of gl_FragDepth
* must appear before any use of gl_FragDepth.
*/
- if (earlier->used) {
+ if (earlier->data.used) {
_mesa_glsl_error(&loc, state,
"the first redeclaration of gl_FragDepth "
"must appear before any use of gl_FragDepth");
}
/* Prevent inconsistent redeclaration of depth layout qualifier. */
- if (earlier->depth_layout != ir_depth_layout_none
- && earlier->depth_layout != var->depth_layout) {
+ if (earlier->data.depth_layout != ir_depth_layout_none
+ && earlier->data.depth_layout != var->data.depth_layout) {
_mesa_glsl_error(&loc, state,
"gl_FragDepth: depth layout is declared here "
"as '%s, but it was previously declared as "
"'%s'",
- depth_layout_string(var->depth_layout),
- depth_layout_string(earlier->depth_layout));
+ depth_layout_string(var->data.depth_layout),
+ depth_layout_string(earlier->data.depth_layout));
}
- earlier->depth_layout = var->depth_layout;
+ earlier->data.depth_layout = var->data.depth_layout;
} else if (allow_all_redeclarations) {
- if (earlier->mode != var->mode) {
+ if (earlier->data.mode != var->data.mode) {
_mesa_glsl_error(&loc, state,
"redeclaration of `%s' with incorrect qualifiers",
var->name);
* directly by an application via API commands, or indirectly by
* OpenGL."
*/
- if (var->mode == ir_var_uniform) {
+ if (var->data.mode == ir_var_uniform) {
state->check_version(120, 0, &initializer_loc,
"cannot initialize uniforms");
}
"cannot initialize samplers");
}
- if ((var->mode == ir_var_shader_in) && (state->current_function == NULL)) {
+ if ((var->data.mode == ir_var_shader_in) && (state->current_function == NULL)) {
_mesa_glsl_error(& initializer_loc, state,
"cannot initialize %s shader input / %s",
- _mesa_glsl_shader_target_name(state->target),
- (state->target == vertex_shader)
+ _mesa_shader_stage_to_string(state->stage),
+ (state->stage == MESA_SHADER_VERTEX)
? "attribute" : "varying");
}
+ /* If the initializer is an ast_aggregate_initializer, recursively store
+ * type information from the LHS into it, so that its hir() function can do
+ * type checking.
+ */
+ if (decl->initializer->oper == ast_aggregate)
+ _mesa_ast_set_aggregate_type(var->type, decl->initializer);
+
ir_dereference *const lhs = new(state) ir_dereference_variable(var);
ir_rvalue *rhs = decl->initializer->hir(initializer_instructions,
state);
*/
if (type->qualifier.flags.q.constant
|| type->qualifier.flags.q.uniform) {
- ir_rvalue *new_rhs = validate_assignment(state, var->type, rhs, true);
+ ir_rvalue *new_rhs = validate_assignment(state, initializer_loc,
+ var->type, rhs, true);
if (new_rhs != NULL) {
rhs = new_rhs;
var->constant_value = constant_value;
}
} else {
- _mesa_glsl_error(&initializer_loc, state,
- "initializer of type %s cannot be assigned to "
- "variable of type %s",
- rhs->type->name, var->type->name);
if (var->type->is_numeric()) {
/* Reduce cascading errors. */
var->constant_value = ir_constant::zero(state, var->type);
}
if (rhs && !rhs->type->is_error()) {
- bool temp = var->read_only;
+ bool temp = var->data.read_only;
if (type->qualifier.flags.q.constant)
- var->read_only = false;
+ var->data.read_only = false;
/* Never emit code to initialize a uniform.
*/
initializer_type = rhs->type;
var->constant_initializer = rhs->constant_expression_value();
- var->has_initializer = true;
+ var->data.has_initializer = true;
/* If the declared variable is an unsized array, it must inherrit
* its full type from the initializer. A declaration such as
*/
var->type = initializer_type;
- var->read_only = temp;
+ var->data.read_only = temp;
}
return result;
return;
}
- if (var->type->length == 0) {
+ if (var->type->is_unsized_array()) {
/* Section 4.3.8.1 (Input Layout Qualifiers) of the GLSL 1.50 spec says:
*
* All geometry shader input unsized array declarations will be
}
foreach_list_typed (ast_declaration, decl, link, &this->declarations) {
- assert(!decl->is_array);
- assert(decl->array_size == NULL);
+ assert(decl->array_specifier == NULL);
assert(decl->initializer == NULL);
ir_variable *const earlier =
_mesa_glsl_error(& loc, state,
"undeclared variable `%s' cannot be marked "
"invariant", decl->identifier);
- } else if ((state->target == vertex_shader)
- && (earlier->mode != ir_var_shader_out)) {
+ } else if ((state->stage == MESA_SHADER_VERTEX)
+ && (earlier->data.mode != ir_var_shader_out)) {
_mesa_glsl_error(& loc, state,
"`%s' cannot be marked invariant, vertex shader "
"outputs only", decl->identifier);
- } else if ((state->target == fragment_shader)
- && (earlier->mode != ir_var_shader_in)) {
+ } else if ((state->stage == MESA_SHADER_FRAGMENT)
+ && (earlier->data.mode != ir_var_shader_in)) {
_mesa_glsl_error(& loc, state,
"`%s' cannot be marked invariant, fragment shader "
"inputs only", decl->identifier);
- } else if (earlier->used) {
+ } else if (earlier->data.used) {
_mesa_glsl_error(& loc, state,
"variable `%s' may not be redeclared "
"`invariant' after being used",
earlier->name);
} else {
- earlier->invariant = true;
+ earlier->data.invariant = true;
}
}
(void) this->type->specifier->hir(instructions, state);
decl_type = this->type->glsl_type(& type_name, state);
+
+ /* An offset-qualified atomic counter declaration sets the default
+ * offset for the next declaration within the same atomic counter
+ * buffer.
+ */
+ if (decl_type && decl_type->contains_atomic()) {
+ if (type->qualifier.flags.q.explicit_binding &&
+ type->qualifier.flags.q.explicit_offset)
+ state->atomic_counter_offsets[type->qualifier.binding] =
+ type->qualifier.offset;
+ }
+
if (this->declarations.is_empty()) {
/* If there is no structure involved in the program text, there are two
* possible scenarios:
_mesa_glsl_error(&loc, state,
"invalid type `%s' in empty declaration",
type_name);
+ } else if (decl_type->base_type == GLSL_TYPE_ATOMIC_UINT) {
+ /* Empty atomic counter declarations are allowed and useful
+ * to set the default offset qualifier.
+ */
+ return NULL;
} else if (this->type->qualifier.precision != ast_precision_none) {
if (this->type->specifier->structure != NULL) {
_mesa_glsl_error(&loc, state,
precision_names[this->type->qualifier.precision],
type_name);
}
- } else {
+ } else if (this->type->specifier->structure == NULL) {
_mesa_glsl_warning(&loc, state, "empty declaration");
}
}
continue;
}
- if (decl->is_array) {
- var_type = process_array_type(&loc, decl_type, decl->array_size,
- state);
- if (var_type->is_error())
- continue;
- } else {
- var_type = decl_type;
- }
+ var_type = process_array_type(&loc, decl_type, decl->array_specifier,
+ state);
var = new(ctx) ir_variable(var_type, decl->identifier, ir_var_auto);
& loc, false);
if (this->type->qualifier.flags.q.invariant) {
- if ((state->target == vertex_shader) &&
- var->mode != ir_var_shader_out) {
+ if ((state->stage == MESA_SHADER_VERTEX) &&
+ var->data.mode != ir_var_shader_out) {
_mesa_glsl_error(& loc, state,
"`%s' cannot be marked invariant, vertex shader "
"outputs only", var->name);
- } else if ((state->target == fragment_shader) &&
- var->mode != ir_var_shader_in) {
+ } else if ((state->stage == MESA_SHADER_FRAGMENT) &&
+ var->data.mode != ir_var_shader_in) {
/* FINISHME: Note that this doesn't work for invariant on
* a function signature inval
*/
"global scope%s",
mode, var->name, extra);
}
- } else if (var->mode == ir_var_shader_in) {
- var->read_only = true;
+ } else if (var->data.mode == ir_var_shader_in) {
+ var->data.read_only = true;
- if (state->target == vertex_shader) {
+ if (state->stage == MESA_SHADER_VERTEX) {
bool error_emitted = false;
/* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec:
* vectors. Vertex shader inputs cannot be arrays or
* structures."
*/
- const glsl_type *check_type = var->type->is_array()
- ? var->type->fields.array : var->type;
+ const glsl_type *check_type = var->type;
+ while (check_type->is_array())
+ check_type = check_type->element_type();
switch (check_type->base_type) {
case GLSL_TYPE_FLOAT:
"cannot have array type")) {
error_emitted = true;
}
- } else if (state->target == geometry_shader) {
+ } else if (state->stage == MESA_SHADER_GEOMETRY) {
/* From section 4.3.4 (Inputs) of the GLSL 1.50 spec:
*
* Geometry shader input variables get the per-vertex values
*/
if (state->is_version(130, 300) &&
var->type->contains_integer() &&
- var->interpolation != INTERP_QUALIFIER_FLAT &&
- ((state->target == fragment_shader && var->mode == ir_var_shader_in)
- || (state->target == vertex_shader && var->mode == ir_var_shader_out
+ var->data.interpolation != INTERP_QUALIFIER_FLAT &&
+ ((state->stage == MESA_SHADER_FRAGMENT && var->data.mode == ir_var_shader_in)
+ || (state->stage == MESA_SHADER_VERTEX && var->data.mode == ir_var_shader_out
&& state->es_shader))) {
- const char *var_type = (state->target == vertex_shader) ?
+ const char *var_type = (state->stage == MESA_SHADER_VERTEX) ?
"vertex output" : "fragment input";
_mesa_glsl_error(&loc, state, "if a %s is (or contains) "
"an integer, then it must be qualified with 'flat'",
const char *i = this->type->qualifier.interpolation_string();
assert(i != NULL);
- switch (state->target) {
- case vertex_shader:
+ switch (state->stage) {
+ case MESA_SHADER_VERTEX:
if (this->type->qualifier.flags.q.in) {
_mesa_glsl_error(&loc, state,
"qualifier '%s' cannot be applied to vertex "
"shader inputs", i);
}
break;
- case fragment_shader:
+ case MESA_SHADER_FRAGMENT:
if (this->type->qualifier.flags.q.out) {
_mesa_glsl_error(&loc, state,
"qualifier '%s' cannot be applied to fragment "
if (state->is_version(130, 300)
&& this->type->qualifier.flags.q.centroid
&& this->type->qualifier.flags.q.in
- && state->target == vertex_shader) {
+ && state->stage == MESA_SHADER_VERTEX) {
_mesa_glsl_error(&loc, state,
"'centroid in' cannot be used in a vertex shader");
}
+ if (state->stage == MESA_SHADER_VERTEX
+ && this->type->qualifier.flags.q.sample
+ && this->type->qualifier.flags.q.in) {
+
+ _mesa_glsl_error(&loc, state,
+ "'sample in' cannot be used in a vertex shader");
+ }
+
/* Section 4.3.6 of the GLSL 1.30 specification states:
* "It is an error to use centroid out in a fragment shader."
*
* "It is an error to use auxiliary storage qualifiers or interpolation
* qualifiers on an output in a fragment shader."
*/
- if (state->target == fragment_shader &&
+ if (state->stage == MESA_SHADER_FRAGMENT &&
this->type->qualifier.flags.q.out &&
this->type->qualifier.has_auxiliary_storage()) {
_mesa_glsl_error(&loc, state,
ir_variable *earlier =
get_variable_being_redeclared(var, decl->get_location(), state,
false /* allow_all_redeclarations */);
+ if (earlier != NULL) {
+ if (strncmp(var->name, "gl_", 3) == 0 &&
+ earlier->data.how_declared == ir_var_declared_in_block) {
+ _mesa_glsl_error(&loc, state,
+ "`%s' has already been redeclared using "
+ "gl_PerVertex", var->name);
+ }
+ earlier->data.how_declared = ir_var_declared_normally;
+ }
if (decl->initializer != NULL) {
result = process_initializer((earlier == NULL) ? var : earlier,
const glsl_type *const t = (earlier == NULL)
? var->type : earlier->type;
- if (t->is_array() && t->length == 0)
+ if (t->is_unsized_array())
/* Section 10.17 of the GLSL ES 1.00 specification states that
* unsized array declarations have been removed from the language.
* Arrays that are sized using an initializer are still explicitly
/* This only handles "vec4 foo[..]". The earlier specifier->glsl_type(...)
* call already handled the "vec4[..] foo" case.
*/
- if (this->is_array) {
- type = process_array_type(&loc, type, this->array_size, state);
- }
+ type = process_array_type(&loc, type, this->array_specifier, state);
- if (!type->is_error() && type->array_size() == 0) {
+ if (!type->is_error() && type->is_unsized_array()) {
_mesa_glsl_error(&loc, state, "arrays passed as parameters must have "
"a declared size");
type = glsl_type::error_type;
* as out or inout function parameters, nor can they be assigned
* into."
*/
- if ((var->mode == ir_var_function_inout || var->mode == ir_var_function_out)
+ if ((var->data.mode == ir_var_function_inout || var->data.mode == ir_var_function_out)
&& type->contains_sampler()) {
_mesa_glsl_error(&loc, state, "out and inout parameters cannot contain samplers");
type = glsl_type::error_type;
* So for GLSL 1.10, passing an array as an out or inout parameter is not
* allowed. This restriction is removed in GLSL 1.20, and in GLSL ES.
*/
- if ((var->mode == ir_var_function_inout || var->mode == ir_var_function_out)
+ if ((var->data.mode == ir_var_function_inout || var->data.mode == ir_var_function_out)
&& type->is_array()
&& !state->check_version(120, 100, &loc,
"arrays cannot be out or inout parameters")) {
* "Arrays are allowed as arguments and as the return type. In both
* cases, the array must be explicitly sized."
*/
- if (return_type->is_array() && return_type->length == 0) {
+ if (return_type->is_unsized_array()) {
YYLTYPE loc = this->get_location();
_mesa_glsl_error(& loc, state,
"function `%s' return type array must be explicitly "
* Add these to the symbol table.
*/
state->symbols->push_scope();
- foreach_iter(exec_list_iterator, iter, signature->parameters) {
- ir_variable *const var = ((ir_instruction *) iter.get())->as_variable();
+ foreach_list(n, &signature->parameters) {
+ ir_variable *const var = ((ir_instruction *) n)->as_variable();
assert(var != NULL);
}
case ast_discard:
- if (state->target != fragment_shader) {
+ if (state->stage != MESA_SHADER_FRAGMENT) {
YYLTYPE loc = this->get_location();
_mesa_glsl_error(& loc, state,
_mesa_glsl_error(& loc, state,
"break may only appear in a loop or a switch");
} else {
- /* For a loop, inline the for loop expression again,
- * since we don't know where near the end of
- * the loop body the normal copy of it
- * is going to be placed.
+ /* For a loop, inline the for loop expression again, since we don't
+ * know where near the end of the loop body the normal copy of it is
+ * going to be placed. Same goes for the condition for a do-while
+ * loop.
*/
if (state->loop_nesting_ast != NULL &&
- mode == ast_continue &&
- state->loop_nesting_ast->rest_expression) {
- state->loop_nesting_ast->rest_expression->hir(instructions,
- state);
- }
+ mode == ast_continue) {
+ if (state->loop_nesting_ast->rest_expression) {
+ state->loop_nesting_ast->rest_expression->hir(instructions,
+ state);
+ }
+ if (state->loop_nesting_ast->mode ==
+ ast_iteration_statement::ast_do_while) {
+ state->loop_nesting_ast->condition_to_hir(instructions, state);
+ }
+ }
if (state->switch_state.is_switch_innermost &&
mode == ast_break) {
}
void
-ast_iteration_statement::condition_to_hir(ir_loop *stmt,
+ast_iteration_statement::condition_to_hir(exec_list *instructions,
struct _mesa_glsl_parse_state *state)
{
void *ctx = state;
if (condition != NULL) {
ir_rvalue *const cond =
- condition->hir(& stmt->body_instructions, state);
+ condition->hir(instructions, state);
if ((cond == NULL)
|| !cond->type->is_boolean() || !cond->type->is_scalar()) {
new(ctx) ir_loop_jump(ir_loop_jump::jump_break);
if_stmt->then_instructions.push_tail(break_stmt);
- stmt->body_instructions.push_tail(if_stmt);
+ instructions->push_tail(if_stmt);
}
}
}
state->switch_state.is_switch_innermost = false;
if (mode != ast_do_while)
- condition_to_hir(stmt, state);
+ condition_to_hir(&stmt->body_instructions, state);
if (body != NULL)
body->hir(& stmt->body_instructions, state);
rest_expression->hir(& stmt->body_instructions, state);
if (mode == ast_do_while)
- condition_to_hir(stmt, state);
+ condition_to_hir(&stmt->body_instructions, state);
if (mode != ast_do_while)
state->symbols->pop_scope();
return NULL;
}
- if (this->is_array) {
+ if (this->array_specifier != NULL) {
_mesa_glsl_error(&loc, state,
"default precision statements do not apply to "
"arrays");
if (type->base_type == GLSL_TYPE_FLOAT
&& state->es_shader
- && state->target == fragment_shader) {
+ && state->stage == MESA_SHADER_FRAGMENT) {
/* Section 4.5.3 (Default Precision Qualifiers) of the GLSL ES 1.00
* spec says:
*
* AST for each can be processed the same way into a set of
* \c glsl_struct_field to describe the members.
*
+ * If we're processing an interface block, var_mode should be the type of the
+ * interface block (ir_var_shader_in, ir_var_shader_out, or ir_var_uniform).
+ * If we're processing a structure, var_mode should be ir_var_auto.
+ *
* \return
* The number of fields processed. A pointer to the array structure fields is
* stored in \c *fields_ret.
glsl_struct_field **fields_ret,
bool is_interface,
bool block_row_major,
- bool allow_reserved_names)
+ bool allow_reserved_names,
+ ir_variable_mode var_mode)
{
unsigned decl_count = 0;
"uniform in non-default uniform block contains sampler");
}
+ if (field_type->contains_atomic()) {
+ /* FINISHME: Add a spec quotation here once updated spec
+ * FINISHME: language is available. See Khronos bug #10903
+ * FINISHME: on whether atomic counters are allowed in
+ * FINISHME: structures.
+ */
+ YYLTYPE loc = decl_list->get_location();
+ _mesa_glsl_error(&loc, state, "atomic counter in structure or "
+ "uniform block");
+ }
+
const struct ast_type_qualifier *const qual =
& decl_list->type->qualifier;
if (qual->flags.q.std140 ||
"members");
}
- if (decl->is_array) {
- field_type = process_array_type(&loc, decl_type, decl->array_size,
- state);
- }
+ field_type = process_array_type(&loc, decl_type,
+ decl->array_specifier, state);
fields[i].type = field_type;
fields[i].name = decl->identifier;
fields[i].location = -1;
+ fields[i].interpolation =
+ interpret_interpolation_qualifier(qual, var_mode, state, &loc);
+ fields[i].centroid = qual->flags.q.centroid ? 1 : 0;
+ fields[i].sample = qual->flags.q.sample ? 1 : 0;
if (qual->flags.q.row_major || qual->flags.q.column_major) {
if (!qual->flags.q.uniform) {
&fields,
false,
false,
- false /* allow_reserved_names */);
+ false /* allow_reserved_names */,
+ ir_var_auto);
validate_identifier(this->name, loc, state);
virtual ir_visitor_status visit(ir_dereference_variable *ir)
{
- if (ir->var->mode == mode && ir->var->get_interface_type() == block) {
+ if (ir->var->data.mode == mode && ir->var->get_interface_type() == block) {
found = true;
return visit_stop;
}
packing = GLSL_INTERFACE_PACKING_STD140;
}
- bool redeclaring_per_vertex = strcmp(this->block_name, "gl_PerVertex") == 0;
- bool block_row_major = this->layout.flags.q.row_major;
- exec_list declared_variables;
- glsl_struct_field *fields;
- unsigned int num_variables =
- ast_process_structure_or_interface_block(&declared_variables,
- state,
- &this->declarations,
- loc,
- &fields,
- true,
- block_row_major,
- redeclaring_per_vertex);
-
ir_variable_mode var_mode;
const char *iface_type_name;
if (this->layout.flags.q.in) {
assert(!"interface block layout qualifier not found!");
}
+ bool redeclaring_per_vertex = strcmp(this->block_name, "gl_PerVertex") == 0;
+ bool block_row_major = this->layout.flags.q.row_major;
+ exec_list declared_variables;
+ glsl_struct_field *fields;
+ unsigned int num_variables =
+ ast_process_structure_or_interface_block(&declared_variables,
+ state,
+ &this->declarations,
+ loc,
+ &fields,
+ true,
+ block_row_major,
+ redeclaring_per_vertex,
+ var_mode);
+
if (!redeclaring_per_vertex)
validate_identifier(this->block_name, loc, state);
_mesa_glsl_error(&loc, state,
"redeclaration of gl_PerVertex input not allowed "
"in the %s shader",
- _mesa_glsl_shader_target_name(state->target));
+ _mesa_shader_stage_to_string(state->stage));
}
if (this->instance_name == NULL ||
- strcmp(this->instance_name, "gl_in") != 0 || !this->is_array) {
+ strcmp(this->instance_name, "gl_in") != 0 || this->array_specifier == NULL) {
_mesa_glsl_error(&loc, state,
"gl_PerVertex input must be redeclared as "
"gl_in[]");
_mesa_glsl_error(&loc, state,
"redeclaration of gl_PerVertex output not "
"allowed in the %s shader",
- _mesa_glsl_shader_target_name(state->target));
+ _mesa_shader_stage_to_string(state->stage));
}
if (this->instance_name != NULL) {
_mesa_glsl_error(&loc, state,
} else {
fields[i].location =
earlier_per_vertex->fields.structure[j].location;
+ fields[i].interpolation =
+ earlier_per_vertex->fields.structure[j].interpolation;
+ fields[i].centroid =
+ earlier_per_vertex->fields.structure[j].centroid;
+ fields[i].sample =
+ earlier_per_vertex->fields.structure[j].sample;
}
}
* variable (or input block, see interface blocks below) needs to be
* declared as an array.
*/
- if (state->target == geometry_shader && !this->is_array &&
+ if (state->stage == MESA_SHADER_GEOMETRY && this->array_specifier == NULL &&
var_mode == ir_var_shader_in) {
_mesa_glsl_error(&loc, state, "geometry shader inputs must be arrays");
}
* field selector ( . ) operator (analogously to structures)."
*/
if (this->instance_name) {
- if (!redeclaring_per_vertex)
+ if (redeclaring_per_vertex) {
+ /* When a built-in in an unnamed interface block is redeclared,
+ * get_variable_being_redeclared() calls
+ * check_builtin_array_max_size() to make sure that built-in array
+ * variables aren't redeclared to illegal sizes. But we're looking
+ * at a redeclaration of a named built-in interface block. So we
+ * have to manually call check_builtin_array_max_size() for all parts
+ * of the interface that are arrays.
+ */
+ for (unsigned i = 0; i < num_variables; i++) {
+ if (fields[i].type->is_array()) {
+ const unsigned size = fields[i].type->array_size();
+ check_builtin_array_max_size(fields[i].name, size, loc, state);
+ }
+ }
+ } else {
validate_identifier(this->instance_name, loc, state);
+ }
ir_variable *var;
- if (this->is_array) {
+ if (this->array_specifier != NULL) {
/* Section 4.3.7 (Interface Blocks) of the GLSL 1.50 spec says:
*
* For uniform blocks declared an array, each individual array
* interface array size *doesn't* need to be specified is on a
* geometry shader input.
*/
- if (this->array_size == NULL &&
- (state->target != geometry_shader || !this->layout.flags.q.in)) {
+ if (this->array_specifier->is_unsized_array &&
+ (state->stage != MESA_SHADER_GEOMETRY || !this->layout.flags.q.in)) {
_mesa_glsl_error(&loc, state,
"only geometry shader inputs may be unsized "
"instance block arrays");
}
const glsl_type *block_array_type =
- process_array_type(&loc, block_type, this->array_size, state);
+ process_array_type(&loc, block_type, this->array_specifier, state);
var = new(state) ir_variable(block_array_type,
this->instance_name,
var_mode);
}
- if (state->target == geometry_shader && var_mode == ir_var_shader_in)
+ if (state->stage == MESA_SHADER_GEOMETRY && var_mode == ir_var_shader_in)
handle_geometry_shader_input_decl(state, loc, var);
if (ir_variable *earlier =
_mesa_glsl_error(&loc, state, "`%s' redeclared",
this->instance_name);
}
+ earlier->data.how_declared = ir_var_declared_normally;
earlier->type = var->type;
earlier->reinit_interface_type(block_type);
delete var;
/* In order to have an array size, the block must also be declared with
* an instane name.
*/
- assert(!this->is_array);
+ assert(this->array_specifier == NULL);
for (unsigned i = 0; i < num_variables; i++) {
ir_variable *var =
new(state) ir_variable(fields[i].type,
ralloc_strdup(state, fields[i].name),
var_mode);
+ var->data.interpolation = fields[i].interpolation;
+ var->data.centroid = fields[i].centroid;
+ var->data.sample = fields[i].sample;
var->init_interface_type(block_type);
if (redeclaring_per_vertex) {
_mesa_glsl_error(&loc, state,
"redeclaration of gl_PerVertex can only "
"include built-in variables");
+ } else if (earlier->data.how_declared == ir_var_declared_normally) {
+ _mesa_glsl_error(&loc, state,
+ "`%s' has already been redeclared", var->name);
} else {
+ earlier->data.how_declared = ir_var_declared_in_block;
earlier->reinit_interface_type(block_type);
}
continue;
* the UBO declaration itself doesn't get an ir_variable unless it
* has an instance name. This is ugly.
*/
- var->explicit_binding = this->layout.flags.q.explicit_binding;
- var->binding = this->layout.binding;
+ var->data.explicit_binding = this->layout.flags.q.explicit_binding;
+ var->data.binding = this->layout.binding;
state->symbols->add_variable(var);
instructions->push_tail(var);
foreach_list_safe(node, instructions) {
ir_variable *const var = ((ir_instruction *) node)->as_variable();
if (var != NULL &&
- var->get_interface_type() == earlier_per_vertex) {
+ var->get_interface_type() == earlier_per_vertex &&
+ var->data.mode == var_mode) {
+ if (var->data.how_declared == ir_var_declared_normally) {
+ _mesa_glsl_error(&loc, state,
+ "redeclaration of gl_PerVertex cannot "
+ "follow a redeclaration of `%s'",
+ var->name);
+ }
state->symbols->disable_variable(var->name);
var->remove();
}
*/
foreach_list (node, instructions) {
ir_variable *var = ((ir_instruction *) node)->as_variable();
- if (var == NULL || var->mode != ir_var_shader_in)
+ if (var == NULL || var->data.mode != ir_var_shader_in)
continue;
/* Note: gl_PrimitiveIDIn has mode ir_var_shader_in, but it's not an
* array; skip it.
*/
- if (!var->type->is_array())
- continue;
- if (var->type->length == 0) {
- if (var->max_array_access >= num_vertices) {
+ if (var->type->is_unsized_array()) {
+ if (var->data.max_array_access >= num_vertices) {
_mesa_glsl_error(&loc, state,
"this geometry shader input layout implies %u"
" vertices, but an access to element %u of input"
" `%s' already exists", num_vertices,
- var->max_array_access, var->name);
+ var->data.max_array_access, var->name);
} else {
var->type = glsl_type::get_array_instance(var->type->fields.array,
num_vertices);
foreach_list(node, instructions) {
ir_variable *var = ((ir_instruction *)node)->as_variable();
- if (!var || !var->assigned)
+ if (!var || !var->data.assigned)
continue;
if (strcmp(var->name, "gl_FragColor") == 0)
else if (strcmp(var->name, "gl_FragData") == 0)
gl_FragData_assigned = true;
else if (strncmp(var->name, "gl_", 3) != 0) {
- if (state->target == fragment_shader &&
- var->mode == ir_var_shader_out) {
+ if (state->stage == MESA_SHADER_FRAGMENT &&
+ var->data.mode == ir_var_shader_out) {
user_defined_fs_output_assigned = true;
user_defined_fs_output = var;
}
user_defined_fs_output->name);
}
}
+
+
+static void
+remove_per_vertex_blocks(exec_list *instructions,
+ _mesa_glsl_parse_state *state, ir_variable_mode mode)
+{
+ /* Find the gl_PerVertex interface block of the appropriate (in/out) mode,
+ * if it exists in this shader type.
+ */
+ const glsl_type *per_vertex = NULL;
+ switch (mode) {
+ case ir_var_shader_in:
+ if (ir_variable *gl_in = state->symbols->get_variable("gl_in"))
+ per_vertex = gl_in->get_interface_type();
+ break;
+ case ir_var_shader_out:
+ if (ir_variable *gl_Position =
+ state->symbols->get_variable("gl_Position")) {
+ per_vertex = gl_Position->get_interface_type();
+ }
+ break;
+ default:
+ assert(!"Unexpected mode");
+ break;
+ }
+
+ /* If we didn't find a built-in gl_PerVertex interface block, then we don't
+ * need to do anything.
+ */
+ if (per_vertex == NULL)
+ return;
+
+ /* If the interface block is used by the shader, then we don't need to do
+ * anything.
+ */
+ interface_block_usage_visitor v(mode, per_vertex);
+ v.run(instructions);
+ if (v.usage_found())
+ return;
+
+ /* Remove any ir_variable declarations that refer to the interface block
+ * we're removing.
+ */
+ foreach_list_safe(node, instructions) {
+ ir_variable *const var = ((ir_instruction *) node)->as_variable();
+ if (var != NULL && var->get_interface_type() == per_vertex &&
+ var->data.mode == mode) {
+ state->symbols->disable_variable(var->name);
+ var->remove();
+ }
+ }
+}
projects / mesa.git / blobdiff