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glsl: Add ir support for sample qualifier; adjust compiler and linker

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Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
This commit is contained in:
Chris Forbes
2013-11-29 21:26:10 +13:00
parent 51aa15aca2
commit 51c5fc85e1
13 changed files with 60 additions and 4 deletions
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15
src/glsl/ast_to_hir.cpp
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@@ -2180,6 +2180,9 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
if (qual->flags.q.centroid)
var->centroid = 1;
if (qual->flags.q.sample)
var->sample = 1;
if (qual->flags.q.attribute && state->target != vertex_shader) {
var->type = glsl_type::error_type;
_mesa_glsl_error(loc, state,
@@ -3277,6 +3280,14 @@ ast_declarator_list::hir(exec_list *instructions,
"'centroid in' cannot be used in a vertex shader");
}
if (state->target == vertex_shader
&& 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."
*
@@ -4662,6 +4673,7 @@ ast_process_structure_or_interface_block(exec_list *instructions,
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) {
@@ -4930,6 +4942,8 @@ ast_interface_block::hir(exec_list *instructions,
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;
}
}
@@ -5084,6 +5098,7 @@ ast_interface_block::hir(exec_list *instructions,
var_mode);
var->interpolation = fields[i].interpolation;
var->centroid = fields[i].centroid;
var->sample = fields[i].sample;
var->init_interface_type(block_type);
if (redeclaring_per_vertex) {

2
src/glsl/builtin_variables.cpp
View File

@@ -332,6 +332,7 @@ per_vertex_accumulator::add_field(int slot, const glsl_type *type,
this->fields[this->num_fields].location = slot;
this->fields[this->num_fields].interpolation = INTERP_QUALIFIER_NONE;
this->fields[this->num_fields].centroid = 0;
this->fields[this->num_fields].sample = 0;
this->num_fields++;
}
@@ -937,6 +938,7 @@ builtin_variable_generator::generate_varyings()
fields[i].location);
var->interpolation = fields[i].interpolation;
var->centroid = fields[i].centroid;
var->sample = fields[i].sample;
var->init_interface_type(per_vertex_out_type);
}
}

5
src/glsl/glsl_types.cpp
View File

@@ -103,6 +103,7 @@ glsl_type::glsl_type(const glsl_struct_field *fields, unsigned num_fields,
this->fields.structure[i].location = fields[i].location;
this->fields.structure[i].interpolation = fields[i].interpolation;
this->fields.structure[i].centroid = fields[i].centroid;
this->fields.structure[i].sample = fields[i].sample;
this->fields.structure[i].row_major = fields[i].row_major;
}
}
@@ -130,6 +131,7 @@ glsl_type::glsl_type(const glsl_struct_field *fields, unsigned num_fields,
this->fields.structure[i].location = fields[i].location;
this->fields.structure[i].interpolation = fields[i].interpolation;
this->fields.structure[i].centroid = fields[i].centroid;
this->fields.structure[i].sample = fields[i].sample;
this->fields.structure[i].row_major = fields[i].row_major;
}
}
@@ -483,6 +485,9 @@ glsl_type::record_key_compare(const void *a, const void *b)
if (key1->fields.structure[i].centroid
!= key2->fields.structure[i].centroid)
return 1;
if (key1->fields.structure[i].sample
!= key2->fields.structure[i].sample)
return 1;
}
return 0;

6
src/glsl/glsl_types.h
View File

@@ -634,6 +634,12 @@ struct glsl_struct_field {
* in ir_variable::centroid). 0 otherwise.
*/
unsigned centroid:1;
/**
* For interface blocks, 1 if this variable uses sample interpolation (as
* in ir_variable::sample). 0 otherwise.
*/
unsigned sample:1;
};
static inline unsigned int

5
src/glsl/ir.cpp
View File

@@ -1585,7 +1585,7 @@ ir_swizzle::variable_referenced() const
ir_variable::ir_variable(const struct glsl_type *type, const char *name,
ir_variable_mode mode)
: max_array_access(0), max_ifc_array_access(NULL),
read_only(false), centroid(false), invariant(false),
read_only(false), centroid(false), sample(false), invariant(false),
how_declared(ir_var_declared_normally), mode(mode),
interpolation(INTERP_QUALIFIER_NONE), atomic()
{
@@ -1709,7 +1709,8 @@ ir_function_signature::qualifiers_match(exec_list *params)
if (a->read_only != b->read_only ||
!modes_match(a->mode, b->mode) ||
a->interpolation != b->interpolation ||
a->centroid != b->centroid) {
a->centroid != b->centroid ||
a->sample != b->sample) {
/* parameter a's qualifiers don't match */
return a->name;

1
src/glsl/ir.h
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@@ -529,6 +529,7 @@ public:
*/
unsigned read_only:1;
unsigned centroid:1;
unsigned sample:1;
unsigned invariant:1;
/**

1
src/glsl/ir_clone.cpp
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@@ -52,6 +52,7 @@ ir_variable::clone(void *mem_ctx, struct hash_table *ht) const
}
var->read_only = this->read_only;
var->centroid = this->centroid;
var->sample = this->sample;
var->invariant = this->invariant;
var->interpolation = this->interpolation;
var->location = this->location;

5
src/glsl/ir_print_visitor.cpp
View File

@@ -149,6 +149,7 @@ void ir_print_visitor::visit(ir_variable *ir)
printf("(declare ");
const char *const cent = (ir->centroid) ? "centroid " : "";
const char *const samp = (ir->sample) ? "sample " : "";
const char *const inv = (ir->invariant) ? "invariant " : "";
const char *const mode[] = { "", "uniform ", "shader_in ", "shader_out ",
"in ", "out ", "inout ",
@@ -157,8 +158,8 @@ void ir_print_visitor::visit(ir_variable *ir)
const char *const interp[] = { "", "smooth", "flat", "noperspective" };
STATIC_ASSERT(ARRAY_SIZE(interp) == INTERP_QUALIFIER_COUNT);
printf("(%s%s%s%s) ",
cent, inv, mode[ir->mode], interp[ir->interpolation]);
printf("(%s%s%s%s%s) ",
cent, samp, inv, mode[ir->mode], interp[ir->interpolation]);
print_type(ir->type);
printf(" %s)", unique_name(ir));

2
src/glsl/ir_reader.cpp
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@@ -413,6 +413,8 @@ ir_reader::read_declaration(s_expression *expr)
// FINISHME: Check for duplicate/conflicting qualifiers.
if (strcmp(qualifier->value(), "centroid") == 0) {
var->centroid = 1;
} else if (strcmp(qualifier->value(), "sample") == 0) {
var->sample = 1;
} else if (strcmp(qualifier->value(), "invariant") == 0) {
var->invariant = 1;
} else if (strcmp(qualifier->value(), "uniform") == 0) {

14
src/glsl/link_varyings.cpp
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@@ -105,6 +105,18 @@ cross_validate_types_and_qualifiers(struct gl_shader_program *prog,
return;
}
if (input->sample != output->sample) {
linker_error(prog,
"%s shader output `%s' %s sample qualifier, "
"but %s shader input %s sample qualifier\n",
_mesa_glsl_shader_target_name(producer_type),
output->name,
(output->sample) ? "has" : "lacks",
_mesa_glsl_shader_target_name(consumer_type),
(input->sample) ? "has" : "lacks");
return;
}
if (input->invariant != output->invariant) {
linker_error(prog,
"%s shader output `%s' %s invariant qualifier, "
@@ -753,10 +765,12 @@ varying_matches::record(ir_variable *producer_var, ir_variable *consumer_var)
* requirement by changing the interpolation type to flat here.
*/
producer_var->centroid = false;
producer_var->sample = false;
producer_var->interpolation = INTERP_QUALIFIER_FLAT;
if (consumer_var) {
consumer_var->centroid = false;
consumer_var->sample = false;
consumer_var->interpolation = INTERP_QUALIFIER_FLAT;
}
}

6
src/glsl/linker.cpp
View File

@@ -765,6 +765,12 @@ cross_validate_globals(struct gl_shader_program *prog,
mode_string(var), var->name);
return;
}
if (existing->sample != var->sample) {
linker_error(prog, "declarations for %s `%s` have "
"mismatching sample qualifiers\n",
mode_string(var), var->name);
return;
}
} else
variables.add_variable(var);
}

1
src/glsl/lower_named_interface_blocks.cpp
View File

@@ -157,6 +157,7 @@ flatten_named_interface_blocks_declarations::run(exec_list *instructions)
new_var->interpolation =
iface_t->fields.structure[i].interpolation;
new_var->centroid = iface_t->fields.structure[i].centroid;
new_var->sample = iface_t->fields.structure[i].sample;
new_var->init_interface_type(iface_t);
hash_table_insert(interface_namespace, new_var,

1
src/glsl/lower_packed_varyings.cpp
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@@ -565,6 +565,7 @@ lower_packed_varyings_visitor::get_packed_varying_deref(
packed_var->max_array_access = this->gs_input_vertices - 1;
}
packed_var->centroid = unpacked_var->centroid;
packed_var->sample = unpacked_var->sample;
packed_var->interpolation = unpacked_var->interpolation;
packed_var->location = location;
unpacked_var->insert_before(packed_var);