[Mesa-dev] [PATCH v2 14/15] glsl linker: compare interface blocks during intrastage linking
Jordan Justen
jordan.l.justen at intel.com
Mon Mar 18 16:35:11 PDT 2013
Verify that interface blocks match when combining compilation
units at the same stage. (For example, when merging all vertex
shaders.)
Fixes piglit glsl-1.50 test:
* linker/interface-blocks-multiple-vs-member-count-mismatch.shader_test
Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
---
src/glsl/Makefile.sources | 1 +
src/glsl/interface_blocks.cpp | 90 +++++++++++++++++++++++++++++++++++++++++
src/glsl/interface_blocks.h | 32 +++++++++++++++
src/glsl/linker.cpp | 6 +++
4 files changed, 129 insertions(+)
create mode 100644 src/glsl/interface_blocks.cpp
create mode 100644 src/glsl/interface_blocks.h
diff --git a/src/glsl/Makefile.sources b/src/glsl/Makefile.sources
index 86ae43e..ba37ad2 100644
--- a/src/glsl/Makefile.sources
+++ b/src/glsl/Makefile.sources
@@ -25,6 +25,7 @@ LIBGLSL_FILES = \
$(GLSL_SRCDIR)/glsl_types.cpp \
$(GLSL_SRCDIR)/glsl_symbol_table.cpp \
$(GLSL_SRCDIR)/hir_field_selection.cpp \
+ $(GLSL_SRCDIR)/interface_blocks.cpp \
$(GLSL_SRCDIR)/ir_basic_block.cpp \
$(GLSL_SRCDIR)/ir_builder.cpp \
$(GLSL_SRCDIR)/ir_clone.cpp \
diff --git a/src/glsl/interface_blocks.cpp b/src/glsl/interface_blocks.cpp
new file mode 100644
index 0000000..f3daccf
--- /dev/null
+++ b/src/glsl/interface_blocks.cpp
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file interface_blocks.cpp
+ * GLSL interface blocks support
+ */
+
+#include "ir.h"
+#include "program/hash_table.h"
+
+bool
+cross_validate_interface_blocks(struct gl_shader **shader_list,
+ unsigned num_shaders)
+{
+ bool ok = true;
+
+ assert(num_shaders >= 1);
+
+ hash_table *ifaces
+ = hash_table_ctor(0, hash_table_string_hash, hash_table_string_compare);
+ const char *iface_name = NULL;
+
+ for (unsigned int i = 0; ok && i < num_shaders; i++) {
+ if (shader_list[i] == NULL)
+ continue;
+
+ foreach_list(node, shader_list[i]->ir) {
+ ir_variable *var = ((ir_instruction *) node)->as_variable();
+ if (!var)
+ continue;
+
+ const glsl_type *iface_type = var->interface_type;
+
+ if (iface_type == NULL)
+ continue;
+
+ /* We've already looked at this interface within this shader
+ * compilation unit, so there is no need to check it again.
+ */
+ if (iface_name != NULL &&
+ strcmp(iface_name, iface_type->name) == 0)
+ continue;
+
+ iface_name = iface_type->name;
+
+ const glsl_type *old_iface_type =
+ (glsl_type *) hash_table_find(ifaces, iface_name);
+
+ /* This is the first time we've seen the interface, so save
+ * it into our hash table.
+ */
+ if (old_iface_type == NULL) {
+ hash_table_insert(ifaces, (void*) iface_type, iface_name);
+ continue;
+ }
+
+ ok &= old_iface_type == iface_type;
+ if (!ok)
+ break;
+ }
+
+ iface_name = NULL;
+ }
+
+ hash_table_dtor(ifaces);
+
+ return ok;
+}
+
diff --git a/src/glsl/interface_blocks.h b/src/glsl/interface_blocks.h
new file mode 100644
index 0000000..76ab725
--- /dev/null
+++ b/src/glsl/interface_blocks.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#pragma once
+#ifndef GLSL_INTERFACE_BLOCKS_H
+#define GLSL_INTERFACE_BLOCKS_H
+
+bool
+cross_validate_interface_blocks(struct gl_shader **shader_list,
+ unsigned num_shaders);
+
+#endif /* GLSL_INTERFACE_BLOCKS_H */
diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp
index 003a331..5bc5132 100644
--- a/src/glsl/linker.cpp
+++ b/src/glsl/linker.cpp
@@ -66,6 +66,7 @@
#include "main/core.h"
#include "glsl_symbol_table.h"
+#include "interface_blocks.h"
#include "ir.h"
#include "program.h"
#include "program/hash_table.h"
@@ -951,6 +952,11 @@ link_intrastage_shaders(void *mem_ctx,
if (!cross_validate_globals(prog, shader_list, num_shaders, false))
return NULL;
+ /* Check that interface blocks defined in multiple shaders are consistent.
+ */
+ if (!cross_validate_interface_blocks(shader_list, num_shaders))
+ return NULL;
+
/* Check that uniform blocks between shaders for a stage agree. */
const int num_uniform_blocks =
link_uniform_blocks(mem_ctx, prog, shader_list, num_shaders,
--
1.7.10.4
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