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

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• Hash : 4cbe8548
  Author :
  Date : 2023-02-28T21:12:17
  

  Expose shader extensions based on ESSL version
  
  Previously, all suported extensions were always exposed in the
  preprocessor. This broke some games which relied on ESSL1-only extension
  macros not being defined in ESSL3 shaders. This change adds min/max
  version information to list of extensions so the preprocessor can
  conditionally expose extensions based on the shader language version,
  both via the extension name macros and the #extension directive.
  
  Test: angle_unittests --gtest_filter="VersionTest.*"
  Test: angle_end2end_tests --gtest_filter="*ESSL*ExtensionMacros*"
  Test: Run com.gameloft.android.ANMP.GloftGGHM on Pixel 6
  
  Bug: b/268091452
  Change-Id: I2332a6cb964f54c47d23e2ef6b24e99a0b5c8202
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4304907
  Reviewed-by: Cody Northrop <cnorthrop@google.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Mike Schuchardt <mikes@lunarg.com>
  

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• src/compiler/translator/ExtensionBehavior.cpp

• //
  // 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>
  
  // clang-format off
  // Extension Name, Min ESSL Version, Max ESSL Version
  #define LIST_EXTENSIONS(OP)                                      \
      OP(ANDROID_extension_pack_es31a,                   310, 320) \
      OP(ANGLE_base_vertex_base_instance_shader_builtin, 300, 320) \
      OP(ANGLE_clip_cull_distance,                       300, 320) \
      OP(ANGLE_multi_draw,                               100, 320) \
      OP(ANGLE_shader_pixel_local_storage,               300, 320) \
      OP(ANGLE_texture_multisample,                      300, 320) \
      OP(APPLE_clip_distance,                            100, 320) \
      OP(ARB_texture_rectangle,                          100, 320) \
      OP(ARM_shader_framebuffer_fetch,                   100, 320) \
      OP(EXT_blend_func_extended,                        100, 320) \
      OP(EXT_clip_cull_distance,                         300, 320) \
      OP(EXT_draw_buffers,                               100, 100) \
      OP(EXT_frag_depth,                                 100, 100) \
      OP(EXT_geometry_shader,                            310, 320) \
      OP(OES_geometry_shader,                            310, 320) \
      OP(OES_shader_io_blocks,                           310, 320) \
      OP(EXT_shader_io_blocks,                           310, 320) \
      OP(EXT_gpu_shader5,                                310, 320) \
      OP(EXT_primitive_bounding_box,                     310, 320) \
      OP(OES_primitive_bounding_box,                     310, 320) \
      OP(EXT_separate_shader_objects,                    100, 320) \
      OP(EXT_shader_framebuffer_fetch,                   100, 320) \
      OP(EXT_shader_framebuffer_fetch_non_coherent,      100, 320) \
      OP(EXT_shader_non_constant_global_initializers,    100, 320) \
      OP(EXT_shader_texture_lod,                         100, 100) \
      OP(EXT_shadow_samplers,                            100, 100) \
      OP(EXT_tessellation_shader,                        310, 320) \
      OP(EXT_texture_buffer,                             310, 320) \
      OP(EXT_texture_cube_map_array,                     310, 320) \
      OP(EXT_YUV_target,                                 300, 320) \
      OP(KHR_blend_equation_advanced,                    100, 320) \
      OP(NV_EGL_stream_consumer_external,                100, 320) \
      OP(NV_shader_framebuffer_fetch,                    100, 100) \
      OP(NV_shader_noperspective_interpolation,          300, 320) \
      OP(OES_EGL_image_external,                         100, 100) \
      OP(OES_EGL_image_external_essl3,                   300, 320) \
      OP(OES_sample_variables,                           300, 320) \
      OP(OES_shader_multisample_interpolation,           300, 320) \
      OP(OES_shader_image_atomic,                        310, 320) \
      OP(OES_standard_derivatives,                       100, 100) \
      OP(OES_texture_3D,                                 100, 100) \
      OP(OES_texture_buffer,                             310, 320) \
      OP(OES_texture_cube_map_array,                     310, 320) \
      OP(OES_texture_storage_multisample_2d_array,       310, 320) \
      OP(OVR_multiview,                                  300, 320) \
      OP(OVR_multiview2,                                 300, 320) \
      OP(WEBGL_video_texture,                            100, 320)
  // clang-format on
  
  namespace sh
  {
  
  #define RETURN_EXTENSION_NAME_CASE(ext, min_version, max_version) \
      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, min_version, max_version) \
      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;
  }
  
  #define RETURN_VERSION_CHECK(ext, min_version, max_version) \
      case TExtension::ext:                                   \
          return (version >= min_version) && (version <= max_version);
  
  bool CheckExtensionVersion(TExtension extension, int version)
  {
      switch (extension)
      {
          LIST_EXTENSIONS(RETURN_VERSION_CHECK)
          default:
              UNREACHABLE();
              return false;
      }
  }
  
  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
  

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