kc3-lang/angle/src/libANGLE/format_map_desktop.cpp

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• Hash : f2412bca
  Author :
  Date : 2019-07-16T15:47:34
  

  Get rendering to texture working
  
  Other small fixes for desktop compatibility
  
  Bug: angleproject:3620
  Change-Id: I8e75bce1f850fb891c8bb6e16f79302a6d59276c
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1707932
  Commit-Queue: Clemen Deng <clemendeng@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/format_map_desktop.cpp

• // Copyright 2019 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.
  //
  // format_map_desktop:
  //   Determining the sized internal format from a (format,type) pair.
  //   Also check DesktopGL format combinations for validity.
  
  #include "angle_gl.h"
  #include "common/debug.h"
  #include "formatutils.h"
  #include "renderer/gl/functionsgl_enums.h"
  
  // TODO(http://anglebug.com/3730): switch ANGLE to generate its own GL enum types from gl.xml
  
  namespace gl
  {
  
  bool ValidDesktopFormat(GLenum format)
  {
      switch (format)
      {
          case GL_STENCIL_INDEX:
          case GL_DEPTH_COMPONENT:
          case GL_DEPTH_STENCIL:
          case GL_RED:
          case GL_GREEN:
          case GL_BLUE:
          case GL_RG:
          case GL_RGB:
          case GL_RGBA:
          case GL_BGR:
          case GL_BGRA:
          case GL_RED_INTEGER:
          case GL_GREEN_INTEGER:
          case GL_BLUE_INTEGER:
          case GL_RG_INTEGER:
          case GL_RGB_INTEGER:
          case GL_RGBA_INTEGER:
          case GL_BGR_INTEGER:
          case GL_BGRA_INTEGER:
              return true;
  
          default:
              return false;
      }
  }
  
  bool ValidDesktopType(GLenum type)
  {
      switch (type)
      {
          case GL_UNSIGNED_BYTE:
          case GL_BYTE:
          case GL_UNSIGNED_SHORT:
          case GL_SHORT:
          case GL_UNSIGNED_INT:
          case GL_INT:
          case GL_HALF_FLOAT:
          case GL_FLOAT:
          case GL_UNSIGNED_BYTE_3_3_2:
          case GL_UNSIGNED_BYTE_2_3_3_REV:
          case GL_UNSIGNED_SHORT_5_6_5:
          case GL_UNSIGNED_SHORT_5_6_5_REV:
          case GL_UNSIGNED_SHORT_4_4_4_4:
          case GL_UNSIGNED_SHORT_4_4_4_4_REV:
          case GL_UNSIGNED_SHORT_5_5_5_1:
          case GL_UNSIGNED_SHORT_1_5_5_5_REV:
          case GL_UNSIGNED_INT_10_10_10_2:
          case GL_UNSIGNED_INT_2_10_10_10_REV:
          case GL_UNSIGNED_INT_24_8:
          case GL_UNSIGNED_INT_10F_11F_11F_REV:
          case GL_UNSIGNED_INT_5_9_9_9_REV:
          case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
              return true;
  
          default:
              return false;
      }
  }
  
  // From OpenGL 4.6 spec section 8.4
  bool ValidDesktopFormatCombination(GLenum format, GLenum type, GLenum internalFormat)
  {
      ASSERT(ValidDesktopFormat(format) && ValidDesktopType(type));
      const InternalFormat &internalFormatInfo = GetInternalFormatInfo(internalFormat, type);
      const InternalFormat &formatInfo         = GetInternalFormatInfo(format, type);
  
      switch (format)
      {
          case GL_RED_INTEGER:
          case GL_GREEN_INTEGER:
          case GL_BLUE_INTEGER:
          case GL_RG_INTEGER:
          case GL_RGB_INTEGER:
          case GL_RGBA_INTEGER:
          case GL_BGR_INTEGER:
          case GL_BGRA_INTEGER:
              switch (type)
              {
                  case GL_HALF_FLOAT:
                  case GL_FLOAT:
                  case GL_UNSIGNED_INT_10F_11F_11F_REV:
                  case GL_UNSIGNED_INT_5_9_9_9_REV:
                      return false;
                  default:
                      break;
              }
              if (!internalFormatInfo.isInt())
                  return false;
              break;
          default:
              // format is not an integer
              if (internalFormatInfo.isInt())
                  return false;
  
              if (formatInfo.isDepthOrStencil() != internalFormatInfo.isDepthOrStencil())
                  return false;
  
              if (format == GL_STENCIL_INDEX && internalFormat != GL_STENCIL_INDEX)
                  return false;
              break;
      }
  
      return true;
  }
  
  }  // namespace gl
  

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