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authormarha <marha@users.sourceforge.net>2014-10-01 23:12:13 +0200
committermarha <marha@users.sourceforge.net>2014-10-01 23:12:13 +0200
commit88236adfe3eb41b8368b4c9ecf3e09a7199dc474 (patch)
tree6acb3f7ad3c60c4605551245df9c321b5fb22c3b /mesalib/src/glsl/lower_ubo_reference.cpp
parente4086b3defb6186a2fb8a5845968c97e613fb493 (diff)
parent30eb28e89e513ba7c04e8424be0cba326a01882b (diff)
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Merge remote-tracking branch 'origin/released'
Conflicts: xorg-server/hw/xwin/InitOutput.c xorg-server/hw/xwin/win.h xorg-server/hw/xwin/winclipboard/internal.h xorg-server/hw/xwin/winclipboard/thread.c xorg-server/hw/xwin/winclipboard/wndproc.c xorg-server/hw/xwin/winclipboard/xevents.c xorg-server/hw/xwin/winclipboardinit.c xorg-server/hw/xwin/winclipboardwrappers.c xorg-server/hw/xwin/winglobals.c
Diffstat (limited to 'mesalib/src/glsl/lower_ubo_reference.cpp')
-rw-r--r--mesalib/src/glsl/lower_ubo_reference.cpp33
1 files changed, 31 insertions, 2 deletions
diff --git a/mesalib/src/glsl/lower_ubo_reference.cpp b/mesalib/src/glsl/lower_ubo_reference.cpp
index 3cdfc04ac..43dd067fa 100644
--- a/mesalib/src/glsl/lower_ubo_reference.cpp
+++ b/mesalib/src/glsl/lower_ubo_reference.cpp
@@ -111,7 +111,7 @@ is_dereferenced_thing_row_major(const ir_dereference *deref)
case GLSL_MATRIX_LAYOUT_COLUMN_MAJOR:
return false;
case GLSL_MATRIX_LAYOUT_ROW_MAJOR:
- return matrix || deref->type->is_record();
+ return matrix || deref->type->without_array()->is_record();
}
unreachable("invalid matrix layout");
@@ -301,7 +301,14 @@ lower_ubo_reference_visitor::handle_rvalue(ir_rvalue **rvalue)
deref = deref_array->array->as_dereference();
break;
} else {
- array_stride = deref_array->type->std140_size(row_major);
+ /* Whether or not the field is row-major (because it might be a
+ * bvec2 or something) does not affect the array itself. We need
+ * to know whether an array element in its entirety is row-major.
+ */
+ const bool array_row_major =
+ is_dereferenced_thing_row_major(deref_array);
+
+ array_stride = deref_array->type->std140_size(array_row_major);
array_stride = glsl_align(array_stride, 16);
}
@@ -327,6 +334,15 @@ lower_ubo_reference_visitor::handle_rvalue(ir_rvalue **rvalue)
const glsl_type *struct_type = deref_record->record->type;
unsigned intra_struct_offset = 0;
+ /* glsl_type::std140_base_alignment doesn't grok interfaces. Use
+ * 16-bytes for the alignment because that is the general minimum of
+ * std140.
+ */
+ const unsigned struct_alignment = struct_type->is_interface()
+ ? 16
+ : struct_type->std140_base_alignment(row_major);
+
+
for (unsigned int i = 0; i < struct_type->length; i++) {
const glsl_type *type = struct_type->fields.structure[i].type;
@@ -346,6 +362,19 @@ lower_ubo_reference_visitor::handle_rvalue(ir_rvalue **rvalue)
deref_record->field) == 0)
break;
intra_struct_offset += type->std140_size(field_row_major);
+
+ /* If the field just examined was itself a structure, apply rule
+ * #9:
+ *
+ * "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 (type->without_array()->is_record()) {
+ intra_struct_offset = glsl_align(intra_struct_offset,
+ struct_alignment);
+
+ }
}
const_offset += intra_struct_offset;