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

Branch : - branch - main - tag -

• Show log

  Commit

• Author : Kimmo Kinnunen
  Date : 2015-07-16 14:13:11
  Hash : b18609b9
  Message : Implement ES 2,3 parts of EXT_blend_func_extended for shader translation Exposes gl_SecondaryFragColor, glSecondaryFragData[] and gl_MaxDualSourceDrawBuffers to GLES SL 1.0. Relaxes rules for undefined output locations for GLES SL 3.0 and exposes gl_MaxDualSourceDrawBuffers. If the output GL context is GL ES 2.0 or 3.0: The emulation layer is expected to turn on EXT_blend_func_extended if the output GL context supports it. If the output GL context is GL: The emulation layer is expected to turn on EXT_blend_func_extended if the output GL context supports ARB_blend_func_extended or if GL context is 3.2 or later. If the source shader spec is GLES SL 2.0: The emulation layer is expected to inspect the shader compilation output variables upon linking. If output target is GL SL, the emulation layer should bind color location 0, index 1 to "angle_SecondaryFragColor" if variable "gl_SecondaryFragColorEXT" is used. Alternatively, emulation layer should bind "angle_SecondaryFragData" to locations 0,1,2,3,..., all color index 1, if "gl_SecondaryFragData" array is used. (The caller can not bind the locations or specify output variables.) If the source shader spec is GLES SL 3.0: The emulation layer is expected to do location auto-resolve of the the output variables that have undefined output locations that have not been bound by the caller. (The caller can not use gl_ built-ins, so nothing to do with those.) BUG=angleproject:1085 TEST=angle_unittest Change-Id: I5cafe205b0c29478b0dcd24aa89a7b0000f5d046 Reviewed-on: https://chromium-review.googlesource.com/287580 Reviewed-by: Zhenyao Mo <zmo@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Kimmo Kinnunen <kkinnunen@nvidia.com>

• src/compiler/translator/ExtensionBehavior.h

• //
  // Copyright (c) 2002-2010 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.
  //
  
  #ifndef COMPILER_TRANSLATOR_EXTENSIONBEHAVIOR_H_
  #define COMPILER_TRANSLATOR_EXTENSIONBEHAVIOR_H_
  
  #include <map>
  #include <string>
  
  typedef enum
  {
      EBhRequire,
      EBhEnable,
      EBhWarn,
      EBhDisable,
      EBhUndefined
  } TBehavior;
  
  inline 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 NULL;
      }
  }
  
  // Mapping between extension name and behavior.
  typedef std::map<std::string, TBehavior> TExtensionBehavior;
  
  inline bool IsExtensionEnabled(const TExtensionBehavior &extBehavior, const char *extension)
  {
      auto iter = extBehavior.find(extension);
      return iter != extBehavior.end() && (iter->second == EBhEnable || iter->second == EBhRequire);
  }
  
  #endif // COMPILER_TRANSLATOR_EXTENSIONBEHAVIOR_H_