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authorTimothy Arceri <[email protected]>2015-02-22 22:52:48 +1100
committerTimothy Arceri <[email protected]>2015-03-06 07:26:50 +1100
commitc5a56a63f9fe94eaddea358b2fd67a1b7abe9ab0 (patch)
tree727fe6454547e6bc1a6a66827594753d139028c6
parent50859c688c15bd0e98ce20fb1563e61e90aca169 (diff)
glsl: use common intrastage array validation
Use common intrastage array validation for interface blocks. This change also allows us to support interface blocks that are arrays of arrays. V2: Reinsert unsized array asserts in interstage_match() Reviewed-by: Mark Janes <[email protected]>
-rw-r--r--src/glsl/link_interface_blocks.cpp74
1 files changed, 37 insertions, 37 deletions
diff --git a/src/glsl/link_interface_blocks.cpp b/src/glsl/link_interface_blocks.cpp
index 0ce502d4fdd..07f5b4223a8 100644
--- a/src/glsl/link_interface_blocks.cpp
+++ b/src/glsl/link_interface_blocks.cpp
@@ -50,18 +50,20 @@ struct interface_block_definition
* represents either the interface instance (for named interfaces), or a
* member of the interface (for unnamed interfaces).
*/
- explicit interface_block_definition(const ir_variable *var)
- : type(var->get_interface_type()),
- instance_name(NULL),
- array_size(-1)
+ explicit interface_block_definition(ir_variable *var)
+ : var(var),
+ type(var->get_interface_type()),
+ instance_name(NULL)
{
if (var->is_interface_instance()) {
instance_name = var->name;
- if (var->type->is_array())
- array_size = var->type->length;
}
explicitly_declared = (var->data.how_declared != ir_var_declared_implicitly);
}
+ /**
+ * Interface block ir_variable
+ */
+ ir_variable *var;
/**
* Interface block type
@@ -74,12 +76,6 @@ struct interface_block_definition
const char *instance_name;
/**
- * For an interface block array, the array size (or 0 if unsized).
- * Otherwise -1.
- */
- int array_size;
-
- /**
* True if this interface block was explicitly declared in the shader;
* false if it was an implicitly declared built-in interface block.
*/
@@ -95,7 +91,8 @@ struct interface_block_definition
bool
intrastage_match(interface_block_definition *a,
const interface_block_definition *b,
- ir_variable_mode mode)
+ ir_variable_mode mode,
+ struct gl_shader_program *prog)
{
/* Types must match. */
if (a->type != b->type) {
@@ -120,18 +117,13 @@ intrastage_match(interface_block_definition *a,
return false;
}
- /* Array vs. nonarray must be consistent, and sizes must be
- * consistent, with the exception that unsized arrays match sized
- * arrays.
+ /* If a block is an array then it must match across the shader.
+ * Unsized arrays are also processed and matched agaist sized arrays.
*/
- if ((a->array_size == -1) != (b->array_size == -1))
+ if (b->var->type != a->var->type &&
+ (b->instance_name != NULL || a->instance_name != NULL) &&
+ !validate_intrastage_arrays(prog, b->var, a->var))
return false;
- if (b->array_size != 0) {
- if (a->array_size == 0)
- a->array_size = b->array_size;
- else if (a->array_size != b->array_size)
- return false;
- }
return true;
}
@@ -153,8 +145,8 @@ interstage_match(const interface_block_definition *producer,
/* Unsized arrays should not occur during interstage linking. They
* should have all been assigned a size by link_intrastage_shaders.
*/
- assert(consumer->array_size != 0);
- assert(producer->array_size != 0);
+ assert(!consumer->var->type->is_unsized_array());
+ assert(!producer->var->type->is_unsized_array());
/* Types must match. */
if (consumer->type != producer->type) {
@@ -165,20 +157,27 @@ interstage_match(const interface_block_definition *producer,
if (consumer->explicitly_declared || producer->explicitly_declared)
return false;
}
+
+ /* Ignore outermost array if geom shader */
+ const glsl_type *consumer_instance_type;
if (extra_array_level) {
- /* Consumer must be an array, and producer must not. */
- if (consumer->array_size == -1)
- return false;
- if (producer->array_size != -1)
- return false;
+ consumer_instance_type = consumer->var->type->fields.array;
} else {
- /* Array vs. nonarray must be consistent, and sizes must be consistent.
- * Since unsized arrays have been ruled out, we can check this by just
- * making sure the sizes are equal.
- */
- if (consumer->array_size != producer->array_size)
+ consumer_instance_type = consumer->var->type;
+ }
+
+ /* If a block is an array then it must match across shaders.
+ * Since unsized arrays have been ruled out, we can check this by just
+ * making sure the types are equal.
+ */
+ if ((consumer->instance_name != NULL &&
+ consumer_instance_type->is_array()) ||
+ (producer->instance_name != NULL &&
+ producer->var->type->is_array())) {
+ if (consumer_instance_type != producer->var->type)
return false;
}
+
return true;
}
@@ -298,7 +297,8 @@ validate_intrastage_interface_blocks(struct gl_shader_program *prog,
*/
definitions->store(def);
} else if (!intrastage_match(prev_def, &def,
- (ir_variable_mode) var->data.mode)) {
+ (ir_variable_mode) var->data.mode,
+ prog)) {
linker_error(prog, "definitions of interface block `%s' do not"
" match\n", iface_type->name);
return;
@@ -374,7 +374,7 @@ validate_interstage_uniform_blocks(struct gl_shader_program *prog,
* uniform matchin rules (for uniforms, it is as though all
* shaders are in the same shader stage).
*/
- if (!intrastage_match(old_def, &new_def, ir_var_uniform)) {
+ if (!intrastage_match(old_def, &new_def, ir_var_uniform, prog)) {
linker_error(prog, "definitions of interface block `%s' do not "
"match\n", var->get_interface_type()->name);
return;