* DEALINGS IN THE SOFTWARE.
*/
-#include <cstdio>
+#include <stdio.h>
#include <stdlib.h>
+#include "main/core.h" /* for Elements */
#include "glsl_symbol_table.h"
#include "glsl_parser_extras.h"
#include "glsl_types.h"
-#include "builtin_types.h"
extern "C" {
#include "program/hash_table.h"
}
hash_table *glsl_type::array_types = NULL;
hash_table *glsl_type::record_types = NULL;
-void *glsl_type::ctx = NULL;
+hash_table *glsl_type::interface_types = NULL;
+void *glsl_type::mem_ctx = NULL;
void
-glsl_type::init_talloc_type_ctx(void)
+glsl_type::init_ralloc_type_ctx(void)
{
- if (glsl_type::ctx == NULL) {
- glsl_type::ctx = talloc_init("glsl_type");
- assert(glsl_type::ctx != NULL);
+ if (glsl_type::mem_ctx == NULL) {
+ glsl_type::mem_ctx = ralloc_autofree_context();
+ assert(glsl_type::mem_ctx != NULL);
}
}
glsl_type::glsl_type(GLenum gl_type,
- unsigned base_type, unsigned vector_elements,
+ glsl_base_type base_type, unsigned vector_elements,
unsigned matrix_columns, const char *name) :
gl_type(gl_type),
base_type(base_type),
sampler_dimensionality(0), sampler_shadow(0), sampler_array(0),
- sampler_type(0),
+ sampler_type(0), interface_packing(0),
vector_elements(vector_elements), matrix_columns(matrix_columns),
length(0)
{
- init_talloc_type_ctx();
- this->name = talloc_strdup(this->ctx, name);
+ init_ralloc_type_ctx();
+ assert(name != NULL);
+ this->name = ralloc_strdup(this->mem_ctx, name);
/* Neither dimension is zero or both dimensions are zero.
*/
assert((vector_elements == 0) == (matrix_columns == 0));
gl_type(gl_type),
base_type(GLSL_TYPE_SAMPLER),
sampler_dimensionality(dim), sampler_shadow(shadow),
- sampler_array(array), sampler_type(type),
+ sampler_array(array), sampler_type(type), interface_packing(0),
vector_elements(0), matrix_columns(0),
length(0)
{
- init_talloc_type_ctx();
- this->name = talloc_strdup(this->ctx, name);
+ init_ralloc_type_ctx();
+ assert(name != NULL);
+ this->name = ralloc_strdup(this->mem_ctx, name);
memset(& fields, 0, sizeof(fields));
}
glsl_type::glsl_type(const glsl_struct_field *fields, unsigned num_fields,
const char *name) :
+ gl_type(0),
base_type(GLSL_TYPE_STRUCT),
sampler_dimensionality(0), sampler_shadow(0), sampler_array(0),
- sampler_type(0),
+ sampler_type(0), interface_packing(0),
vector_elements(0), matrix_columns(0),
length(num_fields)
{
unsigned int i;
- init_talloc_type_ctx();
- this->name = talloc_strdup(this->ctx, name);
- this->fields.structure = talloc_array(this->ctx,
+ init_ralloc_type_ctx();
+ assert(name != NULL);
+ this->name = ralloc_strdup(this->mem_ctx, name);
+ this->fields.structure = ralloc_array(this->mem_ctx,
glsl_struct_field, length);
for (i = 0; i < length; i++) {
this->fields.structure[i].type = fields[i].type;
- this->fields.structure[i].name = talloc_strdup(this->fields.structure,
+ this->fields.structure[i].name = ralloc_strdup(this->fields.structure,
fields[i].name);
+ 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;
}
}
-static void
-add_types_to_symbol_table(glsl_symbol_table *symtab,
- const struct glsl_type *types,
- unsigned num_types, bool warn)
+glsl_type::glsl_type(const glsl_struct_field *fields, unsigned num_fields,
+ enum glsl_interface_packing packing, const char *name) :
+ gl_type(0),
+ base_type(GLSL_TYPE_INTERFACE),
+ sampler_dimensionality(0), sampler_shadow(0), sampler_array(0),
+ sampler_type(0), interface_packing((unsigned) packing),
+ vector_elements(0), matrix_columns(0),
+ length(num_fields)
{
- (void) warn;
+ unsigned int i;
- for (unsigned i = 0; i < num_types; i++) {
- symtab->add_type(types[i].name, & types[i]);
+ init_ralloc_type_ctx();
+ assert(name != NULL);
+ this->name = ralloc_strdup(this->mem_ctx, name);
+ this->fields.structure = ralloc_array(this->mem_ctx,
+ glsl_struct_field, length);
+ for (i = 0; i < length; i++) {
+ this->fields.structure[i].type = fields[i].type;
+ this->fields.structure[i].name = ralloc_strdup(this->fields.structure,
+ fields[i].name);
+ 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;
}
}
-void
-glsl_type::generate_110_types(glsl_symbol_table *symtab)
+bool
+glsl_type::contains_sampler() const
{
- add_types_to_symbol_table(symtab, builtin_core_types,
- Elements(builtin_core_types),
- false);
- add_types_to_symbol_table(symtab, builtin_structure_types,
- Elements(builtin_structure_types),
- false);
- add_types_to_symbol_table(symtab, builtin_110_deprecated_structure_types,
- Elements(builtin_110_deprecated_structure_types),
- false);
- add_types_to_symbol_table(symtab, & void_type, 1, false);
+ if (this->is_array()) {
+ return this->fields.array->contains_sampler();
+ } else if (this->is_record()) {
+ for (unsigned int i = 0; i < this->length; i++) {
+ if (this->fields.structure[i].type->contains_sampler())
+ return true;
+ }
+ return false;
+ } else {
+ return this->is_sampler();
+ }
}
-void
-glsl_type::generate_120_types(glsl_symbol_table *symtab)
+bool
+glsl_type::contains_integer() const
{
- generate_110_types(symtab);
-
- add_types_to_symbol_table(symtab, builtin_120_types,
- Elements(builtin_120_types), false);
+ if (this->is_array()) {
+ return this->fields.array->contains_integer();
+ } else if (this->is_record()) {
+ for (unsigned int i = 0; i < this->length; i++) {
+ if (this->fields.structure[i].type->contains_integer())
+ return true;
+ }
+ return false;
+ } else {
+ return this->is_integer();
+ }
}
-
-void
-glsl_type::generate_130_types(glsl_symbol_table *symtab)
-{
- generate_120_types(symtab);
-
- add_types_to_symbol_table(symtab, builtin_130_types,
- Elements(builtin_130_types), false);
+bool
+glsl_type::contains_opaque() const {
+ switch (base_type) {
+ case GLSL_TYPE_SAMPLER:
+ case GLSL_TYPE_ATOMIC_UINT:
+ return true;
+ case GLSL_TYPE_ARRAY:
+ return element_type()->contains_opaque();
+ case GLSL_TYPE_STRUCT:
+ for (unsigned int i = 0; i < length; i++) {
+ if (fields.structure[i].type->contains_opaque())
+ return true;
+ }
+ return false;
+ default:
+ return false;
+ }
}
-
-void
-glsl_type::generate_ARB_texture_rectangle_types(glsl_symbol_table *symtab,
- bool warn)
+gl_texture_index
+glsl_type::sampler_index() const
{
- add_types_to_symbol_table(symtab, builtin_ARB_texture_rectangle_types,
- Elements(builtin_ARB_texture_rectangle_types),
- warn);
-}
-
-
-void
-glsl_type::generate_EXT_texture_array_types(glsl_symbol_table *symtab,
- bool warn)
-{
- add_types_to_symbol_table(symtab, builtin_EXT_texture_array_types,
- Elements(builtin_EXT_texture_array_types),
- warn);
+ const glsl_type *const t = (this->is_array()) ? this->fields.array : this;
+
+ assert(t->is_sampler());
+
+ switch (t->sampler_dimensionality) {
+ case GLSL_SAMPLER_DIM_1D:
+ return (t->sampler_array) ? TEXTURE_1D_ARRAY_INDEX : TEXTURE_1D_INDEX;
+ case GLSL_SAMPLER_DIM_2D:
+ return (t->sampler_array) ? TEXTURE_2D_ARRAY_INDEX : TEXTURE_2D_INDEX;
+ case GLSL_SAMPLER_DIM_3D:
+ return TEXTURE_3D_INDEX;
+ case GLSL_SAMPLER_DIM_CUBE:
+ return (t->sampler_array) ? TEXTURE_CUBE_ARRAY_INDEX : TEXTURE_CUBE_INDEX;
+ case GLSL_SAMPLER_DIM_RECT:
+ return TEXTURE_RECT_INDEX;
+ case GLSL_SAMPLER_DIM_BUF:
+ return TEXTURE_BUFFER_INDEX;
+ case GLSL_SAMPLER_DIM_EXTERNAL:
+ return TEXTURE_EXTERNAL_INDEX;
+ case GLSL_SAMPLER_DIM_MS:
+ return (t->sampler_array) ? TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX : TEXTURE_2D_MULTISAMPLE_INDEX;
+ default:
+ assert(!"Should not get here.");
+ return TEXTURE_BUFFER_INDEX;
+ }
}
-void
-_mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state)
+const glsl_type *glsl_type::get_base_type() const
{
- switch (state->language_version) {
- case 110:
- glsl_type::generate_110_types(state->symbols);
- break;
- case 120:
- glsl_type::generate_120_types(state->symbols);
- break;
- case 130:
- glsl_type::generate_130_types(state->symbols);
- break;
+ switch (base_type) {
+ case GLSL_TYPE_UINT:
+ return uint_type;
+ case GLSL_TYPE_INT:
+ return int_type;
+ case GLSL_TYPE_FLOAT:
+ return float_type;
+ case GLSL_TYPE_BOOL:
+ return bool_type;
default:
- /* error */
- break;
- }
-
- if (state->ARB_texture_rectangle_enable) {
- glsl_type::generate_ARB_texture_rectangle_types(state->symbols,
- state->ARB_texture_rectangle_warn);
- }
-
- if (state->EXT_texture_array_enable && state->language_version < 130) {
- // These are already included in 130; don't create twice.
- glsl_type::generate_EXT_texture_array_types(state->symbols,
- state->EXT_texture_array_warn);
+ return error_type;
}
}
-const glsl_type *glsl_type::get_base_type() const
+const glsl_type *glsl_type::get_scalar_type() const
{
- switch (base_type) {
+ const glsl_type *type = this;
+
+ /* Handle arrays */
+ while (type->base_type == GLSL_TYPE_ARRAY)
+ type = type->fields.array;
+
+ /* Handle vectors and matrices */
+ switch (type->base_type) {
case GLSL_TYPE_UINT:
return uint_type;
case GLSL_TYPE_INT:
case GLSL_TYPE_BOOL:
return bool_type;
default:
- return error_type;
+ /* Handle everything else */
+ return type;
}
}
hash_table_dtor(glsl_type::record_types);
glsl_type::record_types = NULL;
}
-
- if (glsl_type::ctx != NULL) {
- talloc_free(glsl_type::ctx);
- glsl_type::ctx = NULL;
- }
-}
-
-
-ir_function *
-glsl_type::generate_constructor(glsl_symbol_table *symtab) const
-{
- void *ctx = symtab;
-
- /* Generate the function name and add it to the symbol table.
- */
- ir_function *const f = new(ctx) ir_function(name);
-
- bool added = symtab->add_function(name, f);
- assert(added);
-
- ir_function_signature *const sig = new(ctx) ir_function_signature(this);
- f->add_signature(sig);
-
- ir_variable **declarations =
- (ir_variable **) malloc(sizeof(ir_variable *) * this->length);
- for (unsigned i = 0; i < length; i++) {
- char *const param_name = (char *) malloc(10);
-
- snprintf(param_name, 10, "p%08X", i);
-
- ir_variable *var = (this->base_type == GLSL_TYPE_ARRAY)
- ? new(ctx) ir_variable(fields.array, param_name, ir_var_in)
- : new(ctx) ir_variable(fields.structure[i].type, param_name, ir_var_in);
-
- declarations[i] = var;
- sig->parameters.push_tail(var);
- }
-
- /* Generate the body of the constructor. The body assigns each of the
- * parameters to a portion of a local variable called __retval that has
- * the same type as the constructor. After initializing __retval,
- * __retval is returned.
- */
- ir_variable *retval = new(ctx) ir_variable(this, "__retval", ir_var_auto);
- sig->body.push_tail(retval);
-
- for (unsigned i = 0; i < length; i++) {
- ir_dereference *const lhs = (this->base_type == GLSL_TYPE_ARRAY)
- ? (ir_dereference *) new(ctx) ir_dereference_array(retval,
- new(ctx) ir_constant(i))
- : (ir_dereference *) new(ctx) ir_dereference_record(retval,
- fields.structure[i].name);
-
- ir_dereference *const rhs = new(ctx) ir_dereference_variable(declarations[i]);
- ir_instruction *const assign = new(ctx) ir_assignment(lhs, rhs, NULL);
-
- sig->body.push_tail(assign);
- }
-
- free(declarations);
-
- ir_dereference *const retref = new(ctx) ir_dereference_variable(retval);
- ir_instruction *const inst = new(ctx) ir_return(retref);
- sig->body.push_tail(inst);
-
- return f;
}
glsl_type::glsl_type(const glsl_type *array, unsigned length) :
base_type(GLSL_TYPE_ARRAY),
sampler_dimensionality(0), sampler_shadow(0), sampler_array(0),
- sampler_type(0),
+ sampler_type(0), interface_packing(0),
vector_elements(0), matrix_columns(0),
name(NULL), length(length)
{
* NUL.
*/
const unsigned name_length = strlen(array->name) + 10 + 3;
- char *const n = (char *) talloc_size(this->ctx, name_length);
+ char *const n = (char *) ralloc_size(this->mem_ctx, name_length);
if (length == 0)
snprintf(n, name_length, "%s[]", array->name);
}
+const glsl_type *
+glsl_type::vec(unsigned components)
+{
+ if (components == 0 || components > 4)
+ return error_type;
+
+ static const glsl_type *const ts[] = {
+ float_type, vec2_type, vec3_type, vec4_type
+ };
+ return ts[components - 1];
+}
+
+
+const glsl_type *
+glsl_type::ivec(unsigned components)
+{
+ if (components == 0 || components > 4)
+ return error_type;
+
+ static const glsl_type *const ts[] = {
+ int_type, ivec2_type, ivec3_type, ivec4_type
+ };
+ return ts[components - 1];
+}
+
+
+const glsl_type *
+glsl_type::uvec(unsigned components)
+{
+ if (components == 0 || components > 4)
+ return error_type;
+
+ static const glsl_type *const ts[] = {
+ uint_type, uvec2_type, uvec3_type, uvec4_type
+ };
+ return ts[components - 1];
+}
+
+
+const glsl_type *
+glsl_type::bvec(unsigned components)
+{
+ if (components == 0 || components > 4)
+ return error_type;
+
+ static const glsl_type *const ts[] = {
+ bool_type, bvec2_type, bvec3_type, bvec4_type
+ };
+ return ts[components - 1];
+}
+
+
const glsl_type *
glsl_type::get_instance(unsigned base_type, unsigned rows, unsigned columns)
{
if (base_type == GLSL_TYPE_VOID)
- return &void_type;
+ return void_type;
if ((rows < 1) || (rows > 4) || (columns < 1) || (columns > 4))
return error_type;
if (columns == 1) {
switch (base_type) {
case GLSL_TYPE_UINT:
- return uint_type + (rows - 1);
+ return uvec(rows);
case GLSL_TYPE_INT:
- return int_type + (rows - 1);
+ return ivec(rows);
case GLSL_TYPE_FLOAT:
- return float_type + (rows - 1);
+ return vec(rows);
case GLSL_TYPE_BOOL:
- return bool_type + (rows - 1);
+ return bvec(rows);
default:
return error_type;
}
}
-int
-glsl_type::array_key_compare(const void *a, const void *b)
-{
- const glsl_type *const key1 = (glsl_type *) a;
- const glsl_type *const key2 = (glsl_type *) b;
-
- /* Return zero is the types match (there is zero difference) or non-zero
- * otherwise.
- */
- return ((key1->fields.array == key2->fields.array)
- && (key1->length == key2->length)) ? 0 : 1;
-}
-
-
-unsigned
-glsl_type::array_key_hash(const void *a)
-{
- const glsl_type *const key = (glsl_type *) a;
-
- const struct {
- const glsl_type *t;
- unsigned l;
- char nul;
- } hash_key = {
- key->fields.array,
- key->length,
- '\0'
- };
-
- return hash_table_string_hash(& hash_key);
-}
-
-
const glsl_type *
glsl_type::get_array_instance(const glsl_type *base, unsigned array_size)
{
- const glsl_type key(base, array_size);
if (array_types == NULL) {
- array_types = hash_table_ctor(64, array_key_hash, array_key_compare);
+ array_types = hash_table_ctor(64, hash_table_string_hash,
+ hash_table_string_compare);
}
- const glsl_type *t = (glsl_type *) hash_table_find(array_types, & key);
+ /* Generate a name using the base type pointer in the key. This is
+ * done because the name of the base type may not be unique across
+ * shaders. For example, two shaders may have different record types
+ * named 'foo'.
+ */
+ char key[128];
+ snprintf(key, sizeof(key), "%p[%u]", (void *) base, array_size);
+
+ const glsl_type *t = (glsl_type *) hash_table_find(array_types, key);
if (t == NULL) {
t = new glsl_type(base, array_size);
- hash_table_insert(array_types, (void *) t, t);
+ hash_table_insert(array_types, (void *) t, ralloc_strdup(mem_ctx, key));
}
assert(t->base_type == GLSL_TYPE_ARRAY);
if (key1->length != key2->length)
return 1;
+ if (key1->interface_packing != key2->interface_packing)
+ return 1;
+
for (unsigned i = 0; i < key1->length; i++) {
if (key1->fields.structure[i].type != key2->fields.structure[i].type)
return 1;
if (strcmp(key1->fields.structure[i].name,
key2->fields.structure[i].name) != 0)
return 1;
+ if (key1->fields.structure[i].row_major
+ != key2->fields.structure[i].row_major)
+ return 1;
+ if (key1->fields.structure[i].location
+ != key2->fields.structure[i].location)
+ return 1;
+ if (key1->fields.structure[i].interpolation
+ != key2->fields.structure[i].interpolation)
+ return 1;
+ 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;
break;
size += snprintf(& hash_key[size], sizeof(hash_key) - size,
- "%p", key->fields.structure[i].type);
+ "%p", (void *) key->fields.structure[i].type);
}
return hash_table_string_hash(& hash_key);
}
+const glsl_type *
+glsl_type::get_interface_instance(const glsl_struct_field *fields,
+ unsigned num_fields,
+ enum glsl_interface_packing packing,
+ const char *block_name)
+{
+ const glsl_type key(fields, num_fields, packing, block_name);
+
+ if (interface_types == NULL) {
+ interface_types = hash_table_ctor(64, record_key_hash, record_key_compare);
+ }
+
+ const glsl_type *t = (glsl_type *) hash_table_find(interface_types, & key);
+ if (t == NULL) {
+ t = new glsl_type(fields, num_fields, packing, block_name);
+
+ hash_table_insert(interface_types, (void *) t, t);
+ }
+
+ assert(t->base_type == GLSL_TYPE_INTERFACE);
+ assert(t->length == num_fields);
+ assert(strcmp(t->name, block_name) == 0);
+
+ return t;
+}
+
+
const glsl_type *
glsl_type::field_type(const char *name) const
{
- if (this->base_type != GLSL_TYPE_STRUCT)
+ if (this->base_type != GLSL_TYPE_STRUCT
+ && this->base_type != GLSL_TYPE_INTERFACE)
return error_type;
for (unsigned i = 0; i < this->length; i++) {
int
glsl_type::field_index(const char *name) const
{
- if (this->base_type != GLSL_TYPE_STRUCT)
+ if (this->base_type != GLSL_TYPE_STRUCT
+ && this->base_type != GLSL_TYPE_INTERFACE)
return -1;
for (unsigned i = 0; i < this->length; i++) {
case GLSL_TYPE_BOOL:
return this->components();
- case GLSL_TYPE_STRUCT: {
+ case GLSL_TYPE_STRUCT:
+ case GLSL_TYPE_INTERFACE: {
unsigned size = 0;
for (unsigned i = 0; i < this->length; i++)
case GLSL_TYPE_ARRAY:
return this->length * this->fields.array->component_slots();
+ case GLSL_TYPE_SAMPLER:
+ case GLSL_TYPE_ATOMIC_UINT:
+ case GLSL_TYPE_VOID:
+ case GLSL_TYPE_ERROR:
+ break;
+ }
+
+ return 0;
+}
+
+bool
+glsl_type::can_implicitly_convert_to(const glsl_type *desired) const
+{
+ if (this == desired)
+ return true;
+
+ /* There is no conversion among matrix types. */
+ if (this->matrix_columns > 1 || desired->matrix_columns > 1)
+ return false;
+
+ /* int and uint can be converted to float. */
+ return desired->is_float()
+ && this->is_integer()
+ && this->vector_elements == desired->vector_elements;
+}
+
+unsigned
+glsl_type::std140_base_alignment(bool row_major) const
+{
+ /* (1) If the member is a scalar consuming <N> basic machine units, the
+ * base alignment is <N>.
+ *
+ * (2) If the member is a two- or four-component vector with components
+ * consuming <N> basic machine units, the base alignment is 2<N> or
+ * 4<N>, respectively.
+ *
+ * (3) If the member is a three-component vector with components consuming
+ * <N> basic machine units, the base alignment is 4<N>.
+ */
+ if (this->is_scalar() || this->is_vector()) {
+ switch (this->vector_elements) {
+ case 1:
+ return 4;
+ case 2:
+ return 8;
+ case 3:
+ case 4:
+ return 16;
+ }
+ }
+
+ /* (4) If the member is an array of scalars or vectors, the base alignment
+ * and array stride are set to match the base alignment of a single
+ * array element, according to rules (1), (2), and (3), and rounded up
+ * to the base alignment of a vec4. The array may have padding at the
+ * end; the base offset of the member following the array is rounded up
+ * to the next multiple of the base alignment.
+ *
+ * (6) If the member is an array of <S> column-major matrices with <C>
+ * columns and <R> rows, the matrix is stored identically to a row of
+ * <S>*<C> column vectors with <R> components each, according to rule
+ * (4).
+ *
+ * (8) If the member is an array of <S> row-major matrices with <C> columns
+ * and <R> rows, the matrix is stored identically to a row of <S>*<R>
+ * row vectors with <C> components each, according to rule (4).
+ *
+ * (10) If the member is an array of <S> structures, the <S> elements of
+ * the array are laid out in order, according to rule (9).
+ */
+ if (this->is_array()) {
+ if (this->fields.array->is_scalar() ||
+ this->fields.array->is_vector() ||
+ this->fields.array->is_matrix()) {
+ return MAX2(this->fields.array->std140_base_alignment(row_major), 16);
+ } else {
+ assert(this->fields.array->is_record());
+ return this->fields.array->std140_base_alignment(row_major);
+ }
+ }
+
+ /* (5) If the member is a column-major matrix with <C> columns and
+ * <R> rows, the matrix is stored identically to an array of
+ * <C> column vectors with <R> components each, according to
+ * rule (4).
+ *
+ * (7) If the member is a row-major matrix with <C> columns and <R>
+ * rows, the matrix is stored identically to an array of <R>
+ * row vectors with <C> components each, according to rule (4).
+ */
+ if (this->is_matrix()) {
+ const struct glsl_type *vec_type, *array_type;
+ int c = this->matrix_columns;
+ int r = this->vector_elements;
+
+ if (row_major) {
+ vec_type = get_instance(GLSL_TYPE_FLOAT, c, 1);
+ array_type = glsl_type::get_array_instance(vec_type, r);
+ } else {
+ vec_type = get_instance(GLSL_TYPE_FLOAT, r, 1);
+ array_type = glsl_type::get_array_instance(vec_type, c);
+ }
+
+ return array_type->std140_base_alignment(false);
+ }
+
+ /* (9) If the member is a structure, the base alignment of the
+ * structure is <N>, where <N> is the largest base alignment
+ * value of any of its members, and rounded up to the base
+ * alignment of a vec4. The individual members of this
+ * sub-structure are then assigned offsets by applying this set
+ * of rules recursively, where the base offset of the first
+ * member of the sub-structure is equal to the aligned offset
+ * of the structure. The structure may have padding at the end;
+ * the base offset of the member following the sub-structure is
+ * rounded up to the next multiple of the base alignment of the
+ * structure.
+ */
+ if (this->is_record()) {
+ unsigned base_alignment = 16;
+ for (unsigned i = 0; i < this->length; i++) {
+ const struct glsl_type *field_type = this->fields.structure[i].type;
+ base_alignment = MAX2(base_alignment,
+ field_type->std140_base_alignment(row_major));
+ }
+ return base_alignment;
+ }
+
+ assert(!"not reached");
+ return -1;
+}
+
+unsigned
+glsl_type::std140_size(bool row_major) const
+{
+ /* (1) If the member is a scalar consuming <N> basic machine units, the
+ * base alignment is <N>.
+ *
+ * (2) If the member is a two- or four-component vector with components
+ * consuming <N> basic machine units, the base alignment is 2<N> or
+ * 4<N>, respectively.
+ *
+ * (3) If the member is a three-component vector with components consuming
+ * <N> basic machine units, the base alignment is 4<N>.
+ */
+ if (this->is_scalar() || this->is_vector()) {
+ return this->vector_elements * 4;
+ }
+
+ /* (5) If the member is a column-major matrix with <C> columns and
+ * <R> rows, the matrix is stored identically to an array of
+ * <C> column vectors with <R> components each, according to
+ * rule (4).
+ *
+ * (6) If the member is an array of <S> column-major matrices with <C>
+ * columns and <R> rows, the matrix is stored identically to a row of
+ * <S>*<C> column vectors with <R> components each, according to rule
+ * (4).
+ *
+ * (7) If the member is a row-major matrix with <C> columns and <R>
+ * rows, the matrix is stored identically to an array of <R>
+ * row vectors with <C> components each, according to rule (4).
+ *
+ * (8) If the member is an array of <S> row-major matrices with <C> columns
+ * and <R> rows, the matrix is stored identically to a row of <S>*<R>
+ * row vectors with <C> components each, according to rule (4).
+ */
+ if (this->is_matrix() || (this->is_array() &&
+ this->fields.array->is_matrix())) {
+ const struct glsl_type *element_type;
+ const struct glsl_type *vec_type;
+ unsigned int array_len;
+
+ if (this->is_array()) {
+ element_type = this->fields.array;
+ array_len = this->length;
+ } else {
+ element_type = this;
+ array_len = 1;
+ }
+
+ if (row_major) {
+ vec_type = get_instance(GLSL_TYPE_FLOAT,
+ element_type->matrix_columns, 1);
+ array_len *= element_type->vector_elements;
+ } else {
+ vec_type = get_instance(GLSL_TYPE_FLOAT,
+ element_type->vector_elements, 1);
+ array_len *= element_type->matrix_columns;
+ }
+ const glsl_type *array_type = glsl_type::get_array_instance(vec_type,
+ array_len);
+
+ return array_type->std140_size(false);
+ }
+
+ /* (4) If the member is an array of scalars or vectors, the base alignment
+ * and array stride are set to match the base alignment of a single
+ * array element, according to rules (1), (2), and (3), and rounded up
+ * to the base alignment of a vec4. The array may have padding at the
+ * end; the base offset of the member following the array is rounded up
+ * to the next multiple of the base alignment.
+ *
+ * (10) If the member is an array of <S> structures, the <S> elements of
+ * the array are laid out in order, according to rule (9).
+ */
+ if (this->is_array()) {
+ if (this->fields.array->is_record()) {
+ return this->length * this->fields.array->std140_size(row_major);
+ } else {
+ unsigned element_base_align =
+ this->fields.array->std140_base_alignment(row_major);
+ return this->length * MAX2(element_base_align, 16);
+ }
+ }
+
+ /* (9) If the member is a structure, the base alignment of the
+ * structure is <N>, where <N> is the largest base alignment
+ * value of any of its members, and rounded up to the base
+ * alignment of a vec4. The individual members of this
+ * sub-structure are then assigned offsets by applying this set
+ * of rules recursively, where the base offset of the first
+ * member of the sub-structure is equal to the aligned offset
+ * of the structure. The structure may have padding at the end;
+ * the base offset of the member following the sub-structure is
+ * rounded up to the next multiple of the base alignment of the
+ * structure.
+ */
+ if (this->is_record()) {
+ unsigned size = 0;
+ for (unsigned i = 0; i < this->length; i++) {
+ const struct glsl_type *field_type = this->fields.structure[i].type;
+ unsigned align = field_type->std140_base_alignment(row_major);
+ size = glsl_align(size, align);
+ size += field_type->std140_size(row_major);
+ }
+ size = glsl_align(size,
+ this->fields.structure[0].type->std140_base_alignment(row_major));
+ return size;
+ }
+
+ assert(!"not reached");
+ return -1;
+}
+
+
+unsigned
+glsl_type::count_attribute_slots() const
+{
+ /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec:
+ *
+ * "A scalar input counts the same amount against this limit as a vec4,
+ * so applications may want to consider packing groups of four
+ * unrelated float inputs together into a vector to better utilize the
+ * capabilities of the underlying hardware. A matrix input will use up
+ * multiple locations. The number of locations used will equal the
+ * number of columns in the matrix."
+ *
+ * The spec does not explicitly say how arrays are counted. However, it
+ * should be safe to assume the total number of slots consumed by an array
+ * is the number of entries in the array multiplied by the number of slots
+ * consumed by a single element of the array.
+ *
+ * The spec says nothing about how structs are counted, because vertex
+ * attributes are not allowed to be (or contain) structs. However, Mesa
+ * allows varying structs, the number of varying slots taken up by a
+ * varying struct is simply equal to the sum of the number of slots taken
+ * up by each element.
+ */
+ switch (this->base_type) {
+ case GLSL_TYPE_UINT:
+ case GLSL_TYPE_INT:
+ case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_BOOL:
+ return this->matrix_columns;
+
+ case GLSL_TYPE_STRUCT:
+ case GLSL_TYPE_INTERFACE: {
+ unsigned size = 0;
+
+ for (unsigned i = 0; i < this->length; i++)
+ size += this->fields.structure[i].type->count_attribute_slots();
+
+ return size;
+ }
+
+ case GLSL_TYPE_ARRAY:
+ return this->length * this->fields.array->count_attribute_slots();
+
+ case GLSL_TYPE_SAMPLER:
+ case GLSL_TYPE_ATOMIC_UINT:
+ case GLSL_TYPE_VOID:
+ case GLSL_TYPE_ERROR:
+ break;
+ }
+
+ assert(!"Unexpected type in count_attribute_slots()");
+
+ return 0;
+}
+
+int
+glsl_type::sampler_coordinate_components() const
+{
+ assert(is_sampler());
+
+ int size;
+
+ switch (sampler_dimensionality) {
+ case GLSL_SAMPLER_DIM_1D:
+ case GLSL_SAMPLER_DIM_BUF:
+ size = 1;
+ break;
+ case GLSL_SAMPLER_DIM_2D:
+ case GLSL_SAMPLER_DIM_RECT:
+ case GLSL_SAMPLER_DIM_MS:
+ case GLSL_SAMPLER_DIM_EXTERNAL:
+ size = 2;
+ break;
+ case GLSL_SAMPLER_DIM_3D:
+ case GLSL_SAMPLER_DIM_CUBE:
+ size = 3;
+ break;
default:
- return 0;
+ assert(!"Should not get here.");
+ size = 1;
+ break;
}
+
+ /* Array textures need an additional component for the array index. */
+ if (sampler_array)
+ size += 1;
+
+ return size;
}
projects / mesa.git / blobdiff