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

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• Hash : feb8507f
  Author :
  Date : 2019-09-03T13:22:04
  

  Use VertexArrayID in place of GLuint handle
  
  Bug: angleproject:3804
  Change-Id: I0454533eff13218a6aa1e1672ffcd0e76aedb399
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1769716
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: 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(Context *context,
                                       PrimitiveMode mode,
                                       GLint first,
                                       GLsizei count)
  {
      return ValidateDrawArraysCommon(context, mode, first, count, 1);
  }
  
  ANGLE_INLINE bool ValidateUniform2f(Context *context, GLint location, GLfloat x, GLfloat y)
  {
      return ValidateUniform(context, GL_FLOAT_VEC2, location, 1);
  }
  
  ANGLE_INLINE bool ValidateBindBuffer(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(Context *context,
                                         PrimitiveMode mode,
                                         GLsizei count,
                                         DrawElementsType type,
                                         const void *indices)
  {
      return ValidateDrawElementsCommon(context, mode, count, type, indices, 1);
  }
  
  ANGLE_INLINE bool ValidateVertexAttribPointer(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 >= 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(Context *context, TextureType target);
  
  ANGLE_INLINE bool ValidateBindTexture(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(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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