kc3-lang/angle/src/tests/gl_tests/ExternalBufferTest.cpp

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• Hash : 25390156
  Author :
  Date : 2025-08-21T00:13:19
  

  Suppress unsafe buffers on a file-by-file basis in src/ [1 of N]
  
  In this CL, we suppress many files but stop short of actually
  enabling the warning by not removing the line from the
  unsafe_buffers_paths.txt file. That will happen in a follow-on
  CL, along with resolving any stragglers missed here.
  
  This is mostly a manual change so as to familiarize myself with
  the kinds of issues faced by the Angle codebase when applying buffer
  safety warnings.
  
  -- Re-generate affected hashes.
  -- Clang-format applied to all changed files.
  -- Add a few missing .reserve() calls to vectors as noticed.
  -- Fix some mismatches between file names and header comments.
  -- Be more consistent with header comment format (blank lines and
     trailing //-only lines when a filename comment adjoins license
     boilerplate).
  
  Bug: b/436880895
  Change-Id: I3bde5cc2059acbe8345057289214f1a26f1c34aa
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6869022
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/tests/gl_tests/ExternalBufferTest.cpp

• //
  // Copyright 2020 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.
  //
  // ExternalBufferTest:
  //   Tests the correctness of external buffer ext extension.
  //
  
  #ifdef UNSAFE_BUFFERS_BUILD
  #    pragma allow_unsafe_buffers
  #endif
  
  #include "test_utils/ANGLETest.h"
  #include "test_utils/gl_raii.h"
  #include "util/EGLWindow.h"
  
  #include "common/android_util.h"
  
  #if defined(ANGLE_PLATFORM_ANDROID) && __ANDROID_API__ >= 26
  #    define ANGLE_AHARDWARE_BUFFER_SUPPORT
  // NDK header file for access to Android Hardware Buffers
  #    include <android/hardware_buffer.h>
  #endif
  
  namespace angle
  {
  
  class ExternalBufferTestES31 : public ANGLETest<>
  {
    protected:
      ExternalBufferTestES31()
      {
          setWindowWidth(16);
          setWindowHeight(16);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
          setConfigDepthBits(24);
      }
  
      AHardwareBuffer *createAndroidHardwareBuffer(size_t size, const GLubyte *data)
      {
  #if defined(ANGLE_AHARDWARE_BUFFER_SUPPORT)
          // The height and width are number of pixels of size format
          AHardwareBuffer_Desc aHardwareBufferDescription = {};
          aHardwareBufferDescription.width                = size;
          aHardwareBufferDescription.height               = 1;
          aHardwareBufferDescription.layers               = 1;
          aHardwareBufferDescription.format               = AHARDWAREBUFFER_FORMAT_BLOB;
          aHardwareBufferDescription.usage =
              AHARDWAREBUFFER_USAGE_CPU_READ_RARELY | AHARDWAREBUFFER_USAGE_GPU_DATA_BUFFER;
          aHardwareBufferDescription.stride = 0;
  
          // Allocate memory from Android Hardware Buffer
          AHardwareBuffer *aHardwareBuffer = nullptr;
          EXPECT_EQ(0, AHardwareBuffer_allocate(&aHardwareBufferDescription, &aHardwareBuffer));
  
          void *mappedMemory = nullptr;
          EXPECT_EQ(0, AHardwareBuffer_lock(aHardwareBuffer, AHARDWAREBUFFER_USAGE_CPU_WRITE_RARELY,
                                            -1, nullptr, &mappedMemory));
  
          // Need to grab the stride the implementation might have enforced
          AHardwareBuffer_describe(aHardwareBuffer, &aHardwareBufferDescription);
  
          if (data)
          {
              memcpy(mappedMemory, data, size);
          }
  
          EXPECT_EQ(0, AHardwareBuffer_unlock(aHardwareBuffer, nullptr));
          return aHardwareBuffer;
  #else
          return nullptr;
  #endif  // ANGLE_PLATFORM_ANDROID
      }
  
      void destroyAndroidHardwareBuffer(AHardwareBuffer *aHardwareBuffer)
      {
  #if defined(ANGLE_AHARDWARE_BUFFER_SUPPORT)
          AHardwareBuffer_release(aHardwareBuffer);
  #endif
      }
  
      void *lockAndroidHardwareBuffer(AHardwareBuffer *aHardwareBuffer)
      {
          void *data = nullptr;
  #if defined(ANGLE_AHARDWARE_BUFFER_SUPPORT)
          EXPECT_EQ(0, AHardwareBuffer_lock(aHardwareBuffer, AHARDWAREBUFFER_USAGE_CPU_READ_RARELY,
                                            -1, nullptr, &data));
  #endif
          return data;
      }
  
      void unlockAndroidHardwareBuffer(AHardwareBuffer *aHardwareBuffer)
      {
  #if defined(ANGLE_AHARDWARE_BUFFER_SUPPORT)
          AHardwareBuffer_unlock(aHardwareBuffer, nullptr);
  #endif
      }
  };
  
  // Testing subdata update with external buffer from AHB
  TEST_P(ExternalBufferTestES31, BufferSubData)
  {
      ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_EXT_external_buffer") ||
                         !IsGLExtensionEnabled("GL_EXT_buffer_storage"));
      constexpr uint8_t kBufferSize = 16;
      std::vector<GLubyte> initData(kBufferSize, 0xA);
  
      // Create the Image
      AHardwareBuffer *aHardwareBuffer;
      constexpr GLbitfield kFlags = GL_DYNAMIC_STORAGE_BIT_EXT;
      aHardwareBuffer             = createAndroidHardwareBuffer(kBufferSize, initData.data());
  
      GLBuffer buffer;
      glBindBuffer(GL_SHADER_STORAGE_BUFFER, buffer);
      glBufferStorageExternalEXT(GL_SHADER_STORAGE_BUFFER, 0, kBufferSize,
                                 eglGetNativeClientBufferANDROID(aHardwareBuffer), kFlags);
      ASSERT_GL_NO_ERROR();
  
      std::vector<GLubyte> expectedData(kBufferSize, 0xFF);
  
      glBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, kBufferSize, expectedData.data());
      glFinish();
  
      ASSERT_GL_NO_ERROR();
  
      // Inspect the data written into the buffer using CPU access.
      uint8_t *data = static_cast<uint8_t *>(lockAndroidHardwareBuffer(aHardwareBuffer));
  
      for (uint32_t i = 0; i < kBufferSize; ++i)
      {
          EXPECT_EQ(data[i], 0xFF);
      }
  
      unlockAndroidHardwareBuffer(aHardwareBuffer);
  
      glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
      buffer.reset();
      // Delete the source AHB
      destroyAndroidHardwareBuffer(aHardwareBuffer);
  }
  
  // Verify that subdata updates to an external buffer backed by an AHB doesn't orphan the AHB
  TEST_P(ExternalBufferTestES31, SubDataDoesNotCauseOrphaning)
  {
      ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_EXT_external_buffer") ||
                         !IsGLExtensionEnabled("GL_EXT_buffer_storage"));
      constexpr uint8_t kBufferSize = 16;
      std::vector<GLubyte> initData(kBufferSize, 0xA);
  
      // Create the AHB
      AHardwareBuffer *aHardwareBuffer;
      constexpr GLbitfield kFlags = GL_DYNAMIC_STORAGE_BIT_EXT;
      aHardwareBuffer             = createAndroidHardwareBuffer(kBufferSize, initData.data());
  
      // Create externalBuffer
      GLBuffer externalBuffer;
      glBindBuffer(GL_SHADER_STORAGE_BUFFER, externalBuffer);
      glBufferStorageExternalEXT(GL_SHADER_STORAGE_BUFFER, 0, kBufferSize,
                                 eglGetNativeClientBufferANDROID(aHardwareBuffer), kFlags);
      ASSERT_GL_NO_ERROR();
  
      // Create a copy read buffer
      std::vector<GLubyte> copyReadBufferData(kBufferSize, 0xB);
      GLBuffer copyReadBuffer;
      glBindBuffer(GL_COPY_READ_BUFFER, copyReadBuffer);
      glBufferData(GL_COPY_READ_BUFFER, kBufferSize, copyReadBufferData.data(), GL_STATIC_READ);
      ASSERT_GL_NO_ERROR();
  
      // Copy from copyReadBuffer to externalBuffer
      glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_SHADER_STORAGE_BUFFER, 0, 0, kBufferSize);
      ASSERT_GL_NO_ERROR();
  
      // Update externalBuffer
      std::vector<GLubyte> expectedData(kBufferSize, 0xFF);
      glBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, kBufferSize, expectedData.data());
      glFinish();
      ASSERT_GL_NO_ERROR();
  
      // Inspect the data written into the AHB, through externalBuffer, using CPU access.
      uint8_t *data = static_cast<uint8_t *>(lockAndroidHardwareBuffer(aHardwareBuffer));
  
      for (uint32_t i = 0; i < kBufferSize; ++i)
      {
          EXPECT_EQ(data[i], 0xFF);
      }
  
      unlockAndroidHardwareBuffer(aHardwareBuffer);
  
      glBindBuffer(GL_COPY_READ_BUFFER, 0);
      glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
      copyReadBuffer.reset();
      externalBuffer.reset();
      // Delete the source AHB
      destroyAndroidHardwareBuffer(aHardwareBuffer);
  }
  
  // Testing dispatch compute shader external from source AHB
  TEST_P(ExternalBufferTestES31, DispatchCompute)
  {
      ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_EXT_external_buffer") ||
                         !IsGLExtensionEnabled("GL_EXT_buffer_storage"));
      constexpr char kCS[] = R"(#version 310 es
      layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
      layout(std430, binding=0) buffer Output {
          uint data[];
      } bOutput;
      void main() {
          bOutput.data[gl_GlobalInvocationID.x] =
              gl_GlobalInvocationID.x * 3u;
      }
  )";
  
      constexpr uint8_t kBufferSize = 16 * 4;
      std::vector<GLubyte> initData(kBufferSize, 0xA);
  
      // Create the Image
      AHardwareBuffer *aHardwareBuffer;
      constexpr GLbitfield kFlags = GL_MAP_READ_BIT;
      aHardwareBuffer             = createAndroidHardwareBuffer(kBufferSize, initData.data());
  
      GLBuffer buffer;
      glBindBuffer(GL_SHADER_STORAGE_BUFFER, buffer);
      glBufferStorageExternalEXT(GL_SHADER_STORAGE_BUFFER, 0, kBufferSize,
                                 eglGetNativeClientBufferANDROID(aHardwareBuffer), kFlags);
  
      ASSERT_GL_NO_ERROR();
  
      GLProgram program;
      program.makeCompute(kCS);
      ASSERT_NE(program, 0U);
      ASSERT_GL_NO_ERROR();
  
      glUseProgram(program);
      glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, buffer);
      glDispatchCompute(kBufferSize, 1, 1);
      glFinish();
      ASSERT_GL_NO_ERROR();
  
      // Inspect the data written into the buffer using CPU access.
      uint32_t *data = static_cast<uint32_t *>(lockAndroidHardwareBuffer(aHardwareBuffer));
  
      for (uint32_t i = 0; i < (kBufferSize / sizeof(uint32_t)); ++i)
      {
          EXPECT_EQ(data[i], static_cast<uint32_t>(i * 3));
      }
  
      unlockAndroidHardwareBuffer(aHardwareBuffer);
  
      glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
      buffer.reset();
      // Delete the source AHB
      destroyAndroidHardwareBuffer(aHardwareBuffer);
  }
  
  // Test interaction between GL_OES_mapbuffer and GL_EXT_external_buffer extensions.
  TEST_P(ExternalBufferTestES31, MapBuffer)
  {
      ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_EXT_external_buffer") ||
                         !IsGLExtensionEnabled("GL_EXT_buffer_storage") ||
                         !IsGLExtensionEnabled("GL_EXT_map_buffer_range"));
      constexpr uint8_t kBufferSize = 16;
      std::vector<GLubyte> initData(kBufferSize, 0xFF);
  
      // Create the AHB
      AHardwareBuffer *aHardwareBuffer;
      constexpr GLbitfield kFlags = (GL_MAP_READ_BIT_EXT | GL_MAP_WRITE_BIT_EXT);
      aHardwareBuffer             = createAndroidHardwareBuffer(kBufferSize, initData.data());
  
      GLBuffer buffer;
      glBindBuffer(GL_SHADER_STORAGE_BUFFER, buffer);
      glBufferStorageExternalEXT(GL_SHADER_STORAGE_BUFFER, 0, kBufferSize,
                                 eglGetNativeClientBufferANDROID(aHardwareBuffer), kFlags);
  
      ASSERT_GL_NO_ERROR();
  
      // Inspect the data written into the buffer using CPU access.
      uint8_t *data = static_cast<uint8_t *>(
          glMapBufferRangeEXT(GL_SHADER_STORAGE_BUFFER, 0, kBufferSize, GL_MAP_READ_BIT_EXT));
      ASSERT_GL_NO_ERROR();
  
      for (uint32_t i = 0; i < kBufferSize; ++i)
      {
          EXPECT_EQ(data[i], 0xFF);
      }
  
      glUnmapBufferOES(GL_SHADER_STORAGE_BUFFER);
  
      glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
      buffer.reset();
      // Delete the source AHB
      destroyAndroidHardwareBuffer(aHardwareBuffer);
  }
  
  // Verify that mapping an external buffer backed by an AHB doesn't orphan the AHB
  TEST_P(ExternalBufferTestES31, MapBufferDoesNotCauseOrphaning)
  {
      ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_EXT_external_buffer") ||
                         !IsGLExtensionEnabled("GL_EXT_buffer_storage") ||
                         !IsGLExtensionEnabled("GL_EXT_map_buffer_range"));
      constexpr uint8_t kBufferSize = 16;
      std::vector<GLubyte> initData(kBufferSize, 0xA);
  
      // Create the AHB
      AHardwareBuffer *aHardwareBuffer;
      constexpr GLbitfield kFlags =
          (GL_MAP_READ_BIT_EXT | GL_MAP_WRITE_BIT_EXT | GL_DYNAMIC_STORAGE_BIT_EXT);
      aHardwareBuffer = createAndroidHardwareBuffer(kBufferSize, initData.data());
  
      GLBuffer buffer;
      glBindBuffer(GL_SHADER_STORAGE_BUFFER, buffer);
      glBufferStorageExternalEXT(GL_SHADER_STORAGE_BUFFER, 0, kBufferSize,
                                 eglGetNativeClientBufferANDROID(aHardwareBuffer), kFlags);
      ASSERT_GL_NO_ERROR();
  
      // Create a copy read buffer
      std::vector<GLubyte> copyReadBufferData(kBufferSize, 0xB);
      GLBuffer copyReadBuffer;
      glBindBuffer(GL_COPY_READ_BUFFER, copyReadBuffer);
      glBufferData(GL_COPY_READ_BUFFER, kBufferSize, copyReadBufferData.data(), GL_STATIC_READ);
      ASSERT_GL_NO_ERROR();
  
      // Copy from copyReadBuffer to externalBuffer
      glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_SHADER_STORAGE_BUFFER, 0, 0, kBufferSize);
      ASSERT_GL_NO_ERROR();
  
      // Inspect the data written into the buffer using map buffer API.
      constexpr GLbitfield kMapFlags = (GL_MAP_WRITE_BIT_EXT | GL_MAP_INVALIDATE_BUFFER_BIT);
      uint8_t *mapData               = static_cast<uint8_t *>(
          glMapBufferRangeEXT(GL_SHADER_STORAGE_BUFFER, 0, kBufferSize, kMapFlags));
      ASSERT_GL_NO_ERROR();
      EXPECT_NE(mapData, nullptr);
      glUnmapBufferOES(GL_SHADER_STORAGE_BUFFER);
  
      // Update externalBuffer
      std::vector<GLubyte> expectedData(kBufferSize, 0xFF);
      glBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, kBufferSize, expectedData.data());
      glFinish();
      ASSERT_GL_NO_ERROR();
  
      // Inspect the data written into the AHB, through externalBuffer, using CPU access.
      uint8_t *data = static_cast<uint8_t *>(lockAndroidHardwareBuffer(aHardwareBuffer));
  
      for (uint32_t i = 0; i < kBufferSize; ++i)
      {
          EXPECT_EQ(data[i], 0xFF);
      }
  
      unlockAndroidHardwareBuffer(aHardwareBuffer);
  
      glBindBuffer(GL_COPY_READ_BUFFER, 0);
      glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
      copyReadBuffer.reset();
      buffer.reset();
      // Delete the source AHB
      destroyAndroidHardwareBuffer(aHardwareBuffer);
  }
  
  // Verify that create and destroy external buffer backed by an AHB doesn't leak AHB
  TEST_P(ExternalBufferTestES31, BufferDoesNotLeakAHB)
  {
      ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_EXT_external_buffer") ||
                         !IsGLExtensionEnabled("GL_EXT_buffer_storage"));
  
      // Create and destroy 128M AHB backed buffer in a loop. If we leak AHB, it will fail due to AHB
      // allocation failure before loop ends.
      constexpr size_t kBufferSize = 128 * 1024 * 1024;
      for (int loop = 0; loop < 1000; loop++)
      {
          // Create the AHB
          AHardwareBuffer *aHardwareBuffer;
          constexpr GLbitfield kFlags = GL_DYNAMIC_STORAGE_BIT_EXT;
          aHardwareBuffer             = createAndroidHardwareBuffer(kBufferSize, nullptr);
          GLBuffer buffer;
          glBindBuffer(GL_SHADER_STORAGE_BUFFER, buffer);
          glBufferStorageExternalEXT(GL_SHADER_STORAGE_BUFFER, 0, kBufferSize,
                                     eglGetNativeClientBufferANDROID(aHardwareBuffer), kFlags);
          ASSERT_GL_NO_ERROR();
          buffer.reset();
          // Delete the source AHB
          destroyAndroidHardwareBuffer(aHardwareBuffer);
      }
  }
  
  // Test that checks buffer object state after calling glBufferStorageExternalEXT
  TEST_P(ExternalBufferTestES31, getBufferParameter)
  {
      ANGLE_SKIP_TEST_IF(!IsGLExtensionEnabled("GL_EXT_external_buffer") ||
                         !IsGLExtensionEnabled("GL_EXT_buffer_storage"));
  
      GLint64 value = -1;
  
      constexpr uint8_t kBufferSize = 3;
      std::vector<GLubyte> initData(kBufferSize, 0xA);
  
      // Create the Image
      AHardwareBuffer *aHardwareBuffer;
      constexpr GLbitfield kFlags = GL_MAP_WRITE_BIT;
      aHardwareBuffer             = createAndroidHardwareBuffer(kBufferSize, initData.data());
  
      GLBuffer buffer;
      glBindBuffer(GL_COPY_READ_BUFFER, buffer);
      glBufferStorageExternalEXT(GL_COPY_READ_BUFFER, 0, kBufferSize,
                                 eglGetNativeClientBufferANDROID(aHardwareBuffer), kFlags);
      ASSERT_GL_NO_ERROR();
  
      /* Check the value of GL_BUFFER_SIZE. */
      glGetBufferParameteri64v(GL_COPY_READ_BUFFER, GL_BUFFER_SIZE, &value);
      ASSERT_GL_NO_ERROR();
      ASSERT_EQ(kBufferSize, static_cast<GLint>(value));
  
      /* Check the value of GL_BUFFER_USAGE. */
      value = -1;
      glGetBufferParameteri64v(GL_COPY_READ_BUFFER, GL_BUFFER_USAGE, &value);
      ASSERT_GL_NO_ERROR();
      ASSERT_EQ(GL_DYNAMIC_DRAW, value);
  
      /* Check the value of GL_BUFFER_IMMUTABLE_STORAGE_EXT. */
      value = -1;
      glGetBufferParameteri64v(GL_COPY_READ_BUFFER, GL_BUFFER_IMMUTABLE_STORAGE_EXT, &value);
      ASSERT_GL_NO_ERROR();
      ASSERT_EQ(GL_TRUE, value);
  
      /* Check the value of GL_BUFFER_STORAGE_FLAGS_EXT. */
      value = -1;
      glGetBufferParameteri64v(GL_COPY_READ_BUFFER, GL_BUFFER_STORAGE_FLAGS_EXT, &value);
      ASSERT_GL_NO_ERROR();
      ASSERT_EQ(kFlags, value);
  
      /* Clean up. */
      glUnmapBuffer(GL_COPY_READ_BUFFER);
      glBindBuffer(GL_COPY_READ_BUFFER, 0);
  }
  
  GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(ExternalBufferTestES31);
  ANGLE_INSTANTIATE_TEST_ES31(ExternalBufferTestES31);
  }  // namespace angle
  

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