1 files changed, 125 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/compiler/translator/ExtensionBehavior.cpp b/gfx/angle/checkout/src/compiler/translator/ExtensionBehavior.cpp
new file mode 100644
index 0000000000..9c16393272
--- /dev/null
+++ b/gfx/angle/checkout/src/compiler/translator/ExtensionBehavior.cpp
@@ -0,0 +1,125 @@
+//
+// Copyright 2017 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// ExtensionBehavior.cpp: Extension name enumeration and data structures for storing extension
+// behavior.
+
+#include "compiler/translator/ExtensionBehavior.h"
+
+#include "common/debug.h"
+
+#include <string.h>
+
+#define LIST_EXTENSIONS(OP)                            \
+    OP(ANDROID_extension_pack_es31a)                   \
+    OP(ANGLE_base_vertex_base_instance_shader_builtin) \
+    OP(ANGLE_multi_draw)                               \
+    OP(ANGLE_shader_pixel_local_storage)               \
+    OP(ANGLE_texture_multisample)                      \
+    OP(APPLE_clip_distance)                            \
+    OP(ARB_texture_rectangle)                          \
+    OP(ARM_shader_framebuffer_fetch)                   \
+    OP(EXT_blend_func_extended)                        \
+    OP(EXT_clip_cull_distance)                         \
+    OP(EXT_draw_buffers)                               \
+    OP(EXT_frag_depth)                                 \
+    OP(EXT_geometry_shader)                            \
+    OP(OES_geometry_shader)                            \
+    OP(OES_shader_io_blocks)                           \
+    OP(EXT_shader_io_blocks)                           \
+    OP(EXT_gpu_shader5)                                \
+    OP(EXT_primitive_bounding_box)                     \
+    OP(OES_primitive_bounding_box)                     \
+    OP(EXT_shader_framebuffer_fetch)                   \
+    OP(EXT_shader_framebuffer_fetch_non_coherent)      \
+    OP(EXT_shader_non_constant_global_initializers)    \
+    OP(EXT_shader_texture_lod)                         \
+    OP(EXT_shadow_samplers)                            \
+    OP(EXT_tessellation_shader)                        \
+    OP(EXT_texture_buffer)                             \
+    OP(EXT_texture_cube_map_array)                     \
+    OP(EXT_YUV_target)                                 \
+    OP(KHR_blend_equation_advanced)                    \
+    OP(NV_EGL_stream_consumer_external)                \
+    OP(NV_shader_framebuffer_fetch)                    \
+    OP(NV_shader_noperspective_interpolation)          \
+    OP(OES_EGL_image_external)                         \
+    OP(OES_EGL_image_external_essl3)                   \
+    OP(OES_sample_variables)                           \
+    OP(OES_shader_multisample_interpolation)           \
+    OP(OES_shader_image_atomic)                        \
+    OP(OES_standard_derivatives)                       \
+    OP(OES_texture_3D)                                 \
+    OP(OES_texture_buffer)                             \
+    OP(OES_texture_cube_map_array)                     \
+    OP(OES_texture_storage_multisample_2d_array)       \
+    OP(OVR_multiview)                                  \
+    OP(OVR_multiview2)                                 \
+    OP(WEBGL_video_texture)
+
+namespace sh
+{
+
+#define RETURN_EXTENSION_NAME_CASE(ext) \
+    case TExtension::ext:               \
+        return "GL_" #ext;
+
+const char *GetExtensionNameString(TExtension extension)
+{
+    switch (extension)
+    {
+        LIST_EXTENSIONS(RETURN_EXTENSION_NAME_CASE)
+        default:
+            UNREACHABLE();
+            return "";
+    }
+}
+
+#define RETURN_EXTENSION_IF_NAME_MATCHES(ext)  \
+    if (strcmp(extWithoutGLPrefix, #ext) == 0) \
+    {                                          \
+        return TExtension::ext;                \
+    }
+
+TExtension GetExtensionByName(const char *extension)
+{
+    // If first characters of the extension don't equal "GL_", early out.
+    if (strncmp(extension, "GL_", 3) != 0)
+    {
+        return TExtension::UNDEFINED;
+    }
+    const char *extWithoutGLPrefix = extension + 3;
+
+    LIST_EXTENSIONS(RETURN_EXTENSION_IF_NAME_MATCHES)
+
+    return TExtension::UNDEFINED;
+}
+
+const char *GetBehaviorString(TBehavior b)
+{
+    switch (b)
+    {
+        case EBhRequire:
+            return "require";
+        case EBhEnable:
+            return "enable";
+        case EBhWarn:
+            return "warn";
+        case EBhDisable:
+            return "disable";
+        default:
+            return nullptr;
+    }
+}
+
+bool IsExtensionEnabled(const TExtensionBehavior &extBehavior, TExtension extension)
+{
+    ASSERT(extension != TExtension::UNDEFINED);
+    auto iter = extBehavior.find(extension);
+    return iter != extBehavior.end() &&
+           (iter->second == EBhEnable || iter->second == EBhRequire || iter->second == EBhWarn);
+}
+
+}  // namespace sh