kc3-lang/angle/src/compiler/translator/ExtensionBehavior.cpp

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• Author : Geoff Lang
  Date : 2017-09-12 15:19:44
  Hash : 9df395c8
  Message : Include string.h for strncmp in ExtensionBehavior.cpp BUG=angleproject:2147 Change-Id: I53062a84d48e1c106901a8c32fa49b0148baa344 Reviewed-on: https://chromium-review.googlesource.com/664059 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>

• src/compiler/translator/ExtensionBehavior.cpp

• //
  // Copyright (c) 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(ARB_texture_rectangle)           \
      OP(ARM_shader_framebuffer_fetch)    \
      OP(EXT_blend_func_extended)         \
      OP(EXT_draw_buffers)                \
      OP(EXT_frag_depth)                  \
      OP(EXT_shader_framebuffer_fetch)    \
      OP(EXT_shader_texture_lod)          \
      OP(EXT_YUV_target)                  \
      OP(NV_EGL_stream_consumer_external) \
      OP(NV_shader_framebuffer_fetch)     \
      OP(OES_EGL_image_external)          \
      OP(OES_EGL_image_external_essl3)    \
      OP(OES_geometry_shader)             \
      OP(OES_standard_derivatives)        \
      OP(OVR_multiview)
  
  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);
  }
  
  }  // namespace sh