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

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• Hash : 857880e5
  Author :
  Date : 2019-05-27T13:39:15
  

  GL: Add extensions to enable hardware video decode on Android.
  
  The Android SurfaceTexture API has to be initialized with a texture id
  which Chrome has to query from an ANGLE external texture. It also
  rebinds and sets the texture dimensions on calls to
  SurfaceTexture.updateTexImage so ANGLE must be notified about these
  changes so that state tracking and validation continue to function.
  
  BUG=967410
  
  Change-Id: I92e9077f75835b088da3a8caffb3ff40e9ad0361
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1630293
  Commit-Queue: Geoff Lang <geofflang@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, GLuint 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() == 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, GLuint texture)
  {
      if (!context->getStateCache().isValidBindTextureType(target))
      {
          RecordBindTextureTypeError(context, target);
          return false;
      }
  
      if (texture == 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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