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

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• Author : Jamie Madill
  Date : 2021-09-13 10:56:58
  Hash : 1ca1589f
  Message : Give GLES extension bools a vendor suffix. This is in preparation for auto-generation which will give all of these bools suffixes. Bug: angleproject:6379 Change-Id: I7e3f6c9b644c41a2165e6bf7b62d661fd352a250 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3158503 Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• 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->isWebGL())
      {
          // 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);
  
  // Validation of TexStorage*2DEXT
  bool ValidateES2TexStorageParametersBase(const Context *context,
                                           TextureType target,
                                           GLsizei levels,
                                           GLenum internalformat,
                                           GLsizei width,
                                           GLsizei height);
  
  }  // namespace gl
  
  #endif  // LIBANGLE_VALIDATION_ES2_H_