kc3-lang/angle/src/libANGLE/queryconversions.h

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• Author : Corentin Wallez
  Date : 2016-09-13 10:30:57
  Hash : 95738972
  Message : Specialize GLTypeToGLEnum in headers BUG=angleproject:1514 Change-Id: I1f95e985471ea7a2ea0242d8b48ceccca68edf42 Reviewed-on: https://chromium-review.googlesource.com/384891 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Corentin Wallez <cwallez@chromium.org>

• src/libANGLE/queryconversions.h

• //
  // Copyright (c) 2014 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.
  //
  
  // queryconversions.h: Declaration of state query cast conversions
  
  #ifndef LIBANGLE_QUERY_CONVERSIONS_H_
  #define LIBANGLE_QUERY_CONVERSIONS_H_
  
  #include "angle_gl.h"
  #include "common/angleutils.h"
  
  namespace gl
  {
  class Context;
  
  // Helper class for converting a GL type to a GLenum:
  // We can't use CastStateValueEnum generally, because of GLboolean + GLubyte overlap.
  // We restrict our use to CastStateValue, where it eliminates duplicate parameters.
  
  template <typename GLType>
  struct GLTypeToGLenum
  {
      // static constexpr GLenum value;
  };
  
  template <>
  struct GLTypeToGLenum<GLint>
  {
      static constexpr GLenum value = GL_INT;
  };
  template <>
  struct GLTypeToGLenum<GLuint>
  {
      static constexpr GLenum value = GL_UNSIGNED_INT;
  };
  template <>
  struct GLTypeToGLenum<GLboolean>
  {
      static constexpr GLenum value = GL_BOOL;
  };
  template <>
  struct GLTypeToGLenum<GLint64>
  {
      static constexpr GLenum value = GL_INT_64_ANGLEX;
  };
  template <>
  struct GLTypeToGLenum<GLfloat>
  {
      static constexpr GLenum value = GL_FLOAT;
  };
  
  // The GL state query API types are: bool, int, uint, float, int64
  template <typename QueryT>
  void CastStateValues(Context *context, GLenum nativeType, GLenum pname,
                       unsigned int numParams, QueryT *outParams);
  
  // The GL state query API types are: bool, int, uint, float, int64
  template <typename QueryT>
  void CastIndexedStateValues(Context *context,
                              GLenum nativeType,
                              GLenum pname,
                              GLuint index,
                              unsigned int numParams,
                              QueryT *outParams);
  }
  
  #endif  // LIBANGLE_QUERY_CONVERSIONS_H_