kc3-lang/angle/src/libANGLE/validationES2.h

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• Hash : a18f4145
  Author :
  Date : 2020-02-19T22:42:12
  

  Trace/Replay: Add uniform location type.
  
  This is a large refactor that replaces instances of "GLint location"
  for uniform locations with "UniformLocation location". This boxed type
  is similar to the ResourceID types that we use to capture resource IDs
  more easily. Eventually this will give us a more portable replay.
  
  Bug: angleproject:4411
  Change-Id: I848e861c3956d95b6b953f57f8b6a2c4a676766f
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2066117
  Reviewed-by: Cody Northrop <cnorthrop@google.com>
  Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/validationES2.h

• //
  // Copyright 2018 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.
  //
  // validationES2.h:
  //  Inlined validation functions for OpenGL ES 2.0 entry points.
  
  #ifndef LIBANGLE_VALIDATION_ES2_H_
  #define LIBANGLE_VALIDATION_ES2_H_
  
  #include "libANGLE/ErrorStrings.h"
  #include "libANGLE/validationES.h"
  #include "libANGLE/validationES2_autogen.h"
  
  namespace gl
  {
  ANGLE_INLINE bool ValidateDrawArrays(const Context *context,
                                       PrimitiveMode mode,
                                       GLint first,
                                       GLsizei count)
  {
      return ValidateDrawArraysCommon(context, mode, first, count, 1);
  }
  
  ANGLE_INLINE bool ValidateUniform2f(const Context *context,
                                      UniformLocation location,
                                      GLfloat x,
                                      GLfloat y)
  {
      return ValidateUniform(context, GL_FLOAT_VEC2, location, 1);
  }
  
  ANGLE_INLINE bool ValidateBindBuffer(const Context *context, BufferBinding target, BufferID buffer)
  {
      if (!context->isValidBufferBinding(target))
      {
          context->validationError(GL_INVALID_ENUM, err::kInvalidBufferTypes);
          return false;
      }
  
      if (!context->getState().isBindGeneratesResourceEnabled() &&
          !context->isBufferGenerated(buffer))
      {
          context->validationError(GL_INVALID_OPERATION, err::kObjectNotGenerated);
          return false;
      }
  
      return true;
  }
  
  ANGLE_INLINE bool ValidateDrawElements(const Context *context,
                                         PrimitiveMode mode,
                                         GLsizei count,
                                         DrawElementsType type,
                                         const void *indices)
  {
      return ValidateDrawElementsCommon(context, mode, count, type, indices, 1);
  }
  
  ANGLE_INLINE bool ValidateVertexAttribPointer(const Context *context,
                                                GLuint index,
                                                GLint size,
                                                VertexAttribType type,
                                                GLboolean normalized,
                                                GLsizei stride,
                                                const void *ptr)
  {
      if (!ValidateFloatVertexFormat(context, index, size, type))
      {
          return false;
      }
  
      if (stride < 0)
      {
          context->validationError(GL_INVALID_VALUE, err::kNegativeStride);
          return false;
      }
  
      if (context->getClientVersion() >= ES_3_1)
      {
          const Caps &caps = context->getCaps();
          if (stride > caps.maxVertexAttribStride)
          {
              context->validationError(GL_INVALID_VALUE, err::kExceedsMaxVertexAttribStride);
              return false;
          }
  
          if (index >= static_cast<GLuint>(caps.maxVertexAttribBindings))
          {
              context->validationError(GL_INVALID_VALUE, err::kExceedsMaxVertexAttribBindings);
              return false;
          }
      }
  
      // [OpenGL ES 3.0.2] Section 2.8 page 24:
      // An INVALID_OPERATION error is generated when a non-zero vertex array object
      // is bound, zero is bound to the ARRAY_BUFFER buffer object binding point,
      // and the pointer argument is not NULL.
      bool nullBufferAllowed = context->getState().areClientArraysEnabled() &&
                               context->getState().getVertexArray()->id().value == 0;
      if (!nullBufferAllowed && context->getState().getTargetBuffer(BufferBinding::Array) == 0 &&
          ptr != nullptr)
      {
          context->validationError(GL_INVALID_OPERATION, err::kClientDataInVertexArray);
          return false;
      }
  
      if (context->getExtensions().webglCompatibility)
      {
          // WebGL 1.0 [Section 6.14] Fixed point support
          // The WebGL API does not support the GL_FIXED data type.
          if (type == VertexAttribType::Fixed)
          {
              context->validationError(GL_INVALID_ENUM, err::kFixedNotInWebGL);
              return false;
          }
  
          if (!ValidateWebGLVertexAttribPointer(context, type, normalized, stride, ptr, false))
          {
              return false;
          }
      }
  
      return true;
  }
  
  void RecordBindTextureTypeError(const Context *context, TextureType target);
  
  ANGLE_INLINE bool ValidateBindTexture(const Context *context, TextureType target, TextureID texture)
  {
      if (!context->getStateCache().isValidBindTextureType(target))
      {
          RecordBindTextureTypeError(context, target);
          return false;
      }
  
      if (texture.value == 0)
      {
          return true;
      }
  
      Texture *textureObject = context->getTexture(texture);
      if (textureObject && textureObject->getType() != target)
      {
          context->validationError(GL_INVALID_OPERATION, err::kTextureTargetMismatch);
          return false;
      }
  
      if (!context->getState().isBindGeneratesResourceEnabled() &&
          !context->isTextureGenerated(texture))
      {
          context->validationError(GL_INVALID_OPERATION, err::kObjectNotGenerated);
          return false;
      }
  
      return true;
  }
  
  // Validation of all Tex[Sub]Image2D parameters except TextureTarget.
  bool ValidateES2TexImageParametersBase(const Context *context,
                                         TextureTarget target,
                                         GLint level,
                                         GLenum internalformat,
                                         bool isCompressed,
                                         bool isSubImage,
                                         GLint xoffset,
                                         GLint yoffset,
                                         GLsizei width,
                                         GLsizei height,
                                         GLint border,
                                         GLenum format,
                                         GLenum type,
                                         GLsizei imageSize,
                                         const void *pixels);
  
  }  // namespace gl
  
  #endif  // LIBANGLE_VALIDATION_ES2_H_
  

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