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

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• Hash : d73f852f
  Author :
  Date : 2017-01-13T17:48:57
  

  Reland "Replace gl::trace logging with Chromium style logging"
  
  Removing one usage of FormatString() and its static buffer.
  And preparation for Platform logging.
  
  Fix incorrect enabling of ERR() calls in UNIMPLEMENTED() and
  UNREACHABLE(), resulting in increased code size and
  <iostream> adding 5 static initializers to chrome because of
  cerr referenced in statically linked translator.
  
  BUG=angleproject:1660
  
  Change-Id: I7caa18036118d532e0544f75278602559172ae04
  Reviewed-on: https://chromium-review.googlesource.com/431457
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/formatutils.h

• //
  // Copyright (c) 2013 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.
  //
  
  // formatutils.h: Queries for GL image formats.
  
  #ifndef LIBANGLE_FORMATUTILS_H_
  #define LIBANGLE_FORMATUTILS_H_
  
  #include <cstddef>
  #include <ostream>
  #include <stdint.h>
  
  #include "angle_gl.h"
  #include "libANGLE/Caps.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/Version.h"
  #include "libANGLE/angletypes.h"
  
  namespace gl
  {
  
  struct FormatType final
  {
      FormatType();
      FormatType(GLenum format_, GLenum type_);
      FormatType(const FormatType &other) = default;
      FormatType &operator=(const FormatType &other) = default;
  
      bool operator<(const FormatType &other) const;
  
      GLenum format;
      GLenum type;
  };
  
  struct Type
  {
      Type();
  
      GLuint bytes;
      GLuint bytesShift; // Bit shift by this value to effectively divide/multiply by "bytes" in a more optimal way
      bool specialInterpretation;
  };
  const Type &GetTypeInfo(GLenum type);
  
  struct InternalFormat
  {
      InternalFormat();
  
      GLuint computePixelBytes(GLenum formatType) const;
  
      ErrorOrResult<GLuint> computeRowPitch(GLenum formatType,
                                            GLsizei width,
                                            GLint alignment,
                                            GLint rowLength) const;
      ErrorOrResult<GLuint> computeDepthPitch(GLsizei height,
                                              GLint imageHeight,
                                              GLuint rowPitch) const;
      ErrorOrResult<GLuint> computeDepthPitch(GLenum formatType,
                                              GLsizei width,
                                              GLsizei height,
                                              GLint alignment,
                                              GLint rowLength,
                                              GLint imageHeight) const;
  
      ErrorOrResult<GLuint> computeCompressedImageSize(GLenum formatType,
                                                       const Extents &size) const;
  
      ErrorOrResult<GLuint> computeSkipBytes(GLuint rowPitch,
                                             GLuint depthPitch,
                                             const PixelStoreStateBase &state,
                                             bool is3D) const;
  
      ErrorOrResult<GLuint> computePackUnpackEndByte(GLenum formatType,
                                                         const Extents &size,
                                                         const PixelStoreStateBase &state,
                                                         bool is3D) const;
  
      bool isLUMA() const;
      GLenum getReadPixelsFormat() const;
      GLenum getReadPixelsType() const;
  
      bool operator==(const InternalFormat &other) const;
      bool operator!=(const InternalFormat &other) const;
  
      GLenum internalFormat;
  
      GLuint redBits;
      GLuint greenBits;
      GLuint blueBits;
  
      GLuint luminanceBits;
  
      GLuint alphaBits;
      GLuint sharedBits;
  
      GLuint depthBits;
      GLuint stencilBits;
  
      GLuint pixelBytes;
  
      GLuint componentCount;
  
      bool compressed;
      GLuint compressedBlockWidth;
      GLuint compressedBlockHeight;
  
      GLenum format;
      GLenum type;
  
      GLenum componentType;
      GLenum colorEncoding;
  
      typedef bool (*SupportCheckFunction)(const Version &, const Extensions &);
      SupportCheckFunction textureSupport;
      SupportCheckFunction renderSupport;
      SupportCheckFunction filterSupport;
  };
  
  // A "Format" is either a sized format, or an {unsized format, type} combination.
  struct Format
  {
      // Sized types only.
      explicit Format(GLenum internalFormat);
      explicit Format(const InternalFormat &internalFormat);
  
      // Sized or unsized types.
      Format(GLenum internalFormat, GLenum format, GLenum type);
  
      Format(const Format &other);
      Format &operator=(const Format &other);
  
      GLenum asSized() const;
      bool valid() const;
  
      static Format Invalid();
      static bool SameSized(const Format &a, const Format &b);
  
      friend std::ostream &operator<<(std::ostream &os, const Format &fmt);
  
      // This is the sized info.
      const InternalFormat *info;
      GLenum format;
      GLenum type;
      bool sized;
  };
  
  const InternalFormat &GetInternalFormatInfo(GLenum internalFormat);
  
  GLenum GetSizedInternalFormat(GLenum internalFormat, GLenum type);
  
  typedef std::set<GLenum> FormatSet;
  const FormatSet &GetAllSizedInternalFormats();
  
  // From the ESSL 3.00.4 spec:
  // Vertex shader inputs can only be float, floating-point vectors, matrices, signed and unsigned
  // integers and integer vectors. Vertex shader inputs cannot be arrays or structures.
  
  enum AttributeType
  {
      ATTRIBUTE_FLOAT,
      ATTRIBUTE_VEC2,
      ATTRIBUTE_VEC3,
      ATTRIBUTE_VEC4,
      ATTRIBUTE_INT,
      ATTRIBUTE_IVEC2,
      ATTRIBUTE_IVEC3,
      ATTRIBUTE_IVEC4,
      ATTRIBUTE_UINT,
      ATTRIBUTE_UVEC2,
      ATTRIBUTE_UVEC3,
      ATTRIBUTE_UVEC4,
      ATTRIBUTE_MAT2,
      ATTRIBUTE_MAT3,
      ATTRIBUTE_MAT4,
      ATTRIBUTE_MAT2x3,
      ATTRIBUTE_MAT2x4,
      ATTRIBUTE_MAT3x2,
      ATTRIBUTE_MAT3x4,
      ATTRIBUTE_MAT4x2,
      ATTRIBUTE_MAT4x3,
  };
  
  AttributeType GetAttributeType(GLenum enumValue);
  
  enum VertexFormatType
  {
      VERTEX_FORMAT_INVALID,
      VERTEX_FORMAT_SBYTE1,
      VERTEX_FORMAT_SBYTE1_NORM,
      VERTEX_FORMAT_SBYTE2,
      VERTEX_FORMAT_SBYTE2_NORM,
      VERTEX_FORMAT_SBYTE3,
      VERTEX_FORMAT_SBYTE3_NORM,
      VERTEX_FORMAT_SBYTE4,
      VERTEX_FORMAT_SBYTE4_NORM,
      VERTEX_FORMAT_UBYTE1,
      VERTEX_FORMAT_UBYTE1_NORM,
      VERTEX_FORMAT_UBYTE2,
      VERTEX_FORMAT_UBYTE2_NORM,
      VERTEX_FORMAT_UBYTE3,
      VERTEX_FORMAT_UBYTE3_NORM,
      VERTEX_FORMAT_UBYTE4,
      VERTEX_FORMAT_UBYTE4_NORM,
      VERTEX_FORMAT_SSHORT1,
      VERTEX_FORMAT_SSHORT1_NORM,
      VERTEX_FORMAT_SSHORT2,
      VERTEX_FORMAT_SSHORT2_NORM,
      VERTEX_FORMAT_SSHORT3,
      VERTEX_FORMAT_SSHORT3_NORM,
      VERTEX_FORMAT_SSHORT4,
      VERTEX_FORMAT_SSHORT4_NORM,
      VERTEX_FORMAT_USHORT1,
      VERTEX_FORMAT_USHORT1_NORM,
      VERTEX_FORMAT_USHORT2,
      VERTEX_FORMAT_USHORT2_NORM,
      VERTEX_FORMAT_USHORT3,
      VERTEX_FORMAT_USHORT3_NORM,
      VERTEX_FORMAT_USHORT4,
      VERTEX_FORMAT_USHORT4_NORM,
      VERTEX_FORMAT_SINT1,
      VERTEX_FORMAT_SINT1_NORM,
      VERTEX_FORMAT_SINT2,
      VERTEX_FORMAT_SINT2_NORM,
      VERTEX_FORMAT_SINT3,
      VERTEX_FORMAT_SINT3_NORM,
      VERTEX_FORMAT_SINT4,
      VERTEX_FORMAT_SINT4_NORM,
      VERTEX_FORMAT_UINT1,
      VERTEX_FORMAT_UINT1_NORM,
      VERTEX_FORMAT_UINT2,
      VERTEX_FORMAT_UINT2_NORM,
      VERTEX_FORMAT_UINT3,
      VERTEX_FORMAT_UINT3_NORM,
      VERTEX_FORMAT_UINT4,
      VERTEX_FORMAT_UINT4_NORM,
      VERTEX_FORMAT_SBYTE1_INT,
      VERTEX_FORMAT_SBYTE2_INT,
      VERTEX_FORMAT_SBYTE3_INT,
      VERTEX_FORMAT_SBYTE4_INT,
      VERTEX_FORMAT_UBYTE1_INT,
      VERTEX_FORMAT_UBYTE2_INT,
      VERTEX_FORMAT_UBYTE3_INT,
      VERTEX_FORMAT_UBYTE4_INT,
      VERTEX_FORMAT_SSHORT1_INT,
      VERTEX_FORMAT_SSHORT2_INT,
      VERTEX_FORMAT_SSHORT3_INT,
      VERTEX_FORMAT_SSHORT4_INT,
      VERTEX_FORMAT_USHORT1_INT,
      VERTEX_FORMAT_USHORT2_INT,
      VERTEX_FORMAT_USHORT3_INT,
      VERTEX_FORMAT_USHORT4_INT,
      VERTEX_FORMAT_SINT1_INT,
      VERTEX_FORMAT_SINT2_INT,
      VERTEX_FORMAT_SINT3_INT,
      VERTEX_FORMAT_SINT4_INT,
      VERTEX_FORMAT_UINT1_INT,
      VERTEX_FORMAT_UINT2_INT,
      VERTEX_FORMAT_UINT3_INT,
      VERTEX_FORMAT_UINT4_INT,
      VERTEX_FORMAT_FIXED1,
      VERTEX_FORMAT_FIXED2,
      VERTEX_FORMAT_FIXED3,
      VERTEX_FORMAT_FIXED4,
      VERTEX_FORMAT_HALF1,
      VERTEX_FORMAT_HALF2,
      VERTEX_FORMAT_HALF3,
      VERTEX_FORMAT_HALF4,
      VERTEX_FORMAT_FLOAT1,
      VERTEX_FORMAT_FLOAT2,
      VERTEX_FORMAT_FLOAT3,
      VERTEX_FORMAT_FLOAT4,
      VERTEX_FORMAT_SINT210,
      VERTEX_FORMAT_UINT210,
      VERTEX_FORMAT_SINT210_NORM,
      VERTEX_FORMAT_UINT210_NORM,
      VERTEX_FORMAT_SINT210_INT,
      VERTEX_FORMAT_UINT210_INT,
  };
  
  typedef std::vector<VertexFormatType> InputLayout;
  
  struct VertexFormat : angle::NonCopyable
  {
      VertexFormat(GLenum typeIn, GLboolean normalizedIn, GLuint componentsIn, bool pureIntegerIn);
  
      GLenum type;
      GLboolean normalized;
      GLuint components;
      bool pureInteger;
  };
  
  VertexFormatType GetVertexFormatType(GLenum type, GLboolean normalized, GLuint components, bool pureInteger);
  VertexFormatType GetVertexFormatType(const VertexAttribute &attrib);
  VertexFormatType GetVertexFormatType(const VertexAttribute &attrib, GLenum currentValueType);
  const VertexFormat &GetVertexFormatFromType(VertexFormatType vertexFormatType);
  size_t GetVertexFormatTypeSize(VertexFormatType vertexFormatType);
  
  // Implemented in format_map_autogen.cpp
  bool ValidES3Format(GLenum format);
  bool ValidES3Type(GLenum type);
  bool ValidES3FormatCombination(GLenum format, GLenum type, GLenum internalFormat);
  
  // Implemented in es3_copy_conversion_table_autogen.cpp
  bool ValidES3CopyConversion(GLenum textureFormat, GLenum framebufferFormat);
  
  }  // namespace gl
  
  #endif // LIBANGLE_FORMATUTILS_H_
  

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