1 files changed, 96 insertions, 0 deletions
diff --git a/src/runtime/GLES_COMPUTE/GCMemoryRegion.cpp b/src/runtime/GLES_COMPUTE/GCMemoryRegion.cpp
new file mode 100644
index 0000000000..45fd6e8944
--- /dev/null
+++ b/src/runtime/GLES_COMPUTE/GCMemoryRegion.cpp
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "arm_compute/runtime/GLES_COMPUTE/GCMemoryRegion.h"
+
+#include "arm_compute/core/Error.h"
+
+namespace arm_compute
+{
+IGCMemoryRegion::IGCMemoryRegion(size_t size)
+    : IMemoryRegion(size), _mapping(nullptr), _ssbo_name(0)
+{
+}
+
+const GLuint &IGCMemoryRegion::gc_ssbo_name() const
+{
+    return _ssbo_name;
+}
+
+void *IGCMemoryRegion::buffer()
+{
+    return _mapping;
+}
+
+void *IGCMemoryRegion::buffer() const
+{
+    return _mapping;
+}
+
+GCBufferMemoryRegion::GCBufferMemoryRegion(size_t size)
+    : IGCMemoryRegion(size)
+{
+    ARM_COMPUTE_GL_CHECK(glGenBuffers(1, &_ssbo_name));
+    ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, _ssbo_name));
+    ARM_COMPUTE_GL_CHECK(glBufferData(GL_SHADER_STORAGE_BUFFER, static_cast<GLsizeiptr>(size), nullptr, GL_STATIC_DRAW));
+    ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0));
+}
+
+GCBufferMemoryRegion::~GCBufferMemoryRegion()
+{
+    ARM_COMPUTE_GL_CHECK(glDeleteBuffers(1, &_ssbo_name));
+}
+
+void *GCBufferMemoryRegion::ptr()
+{
+    return nullptr;
+}
+
+void *GCBufferMemoryRegion::map(bool blocking)
+{
+    ARM_COMPUTE_ERROR_ON(_mapping != nullptr);
+    ARM_COMPUTE_UNUSED(blocking);
+
+    ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, _ssbo_name));
+    void *p  = ARM_COMPUTE_GL_CHECK(glMapBufferRange(GL_SHADER_STORAGE_BUFFER, 0, static_cast<GLsizeiptr>(size()), GL_MAP_READ_BIT | GL_MAP_WRITE_BIT));
+    _mapping = reinterpret_cast<uint8_t *>(p);
+
+    return _mapping;
+}
+
+void GCBufferMemoryRegion::unmap()
+{
+    ARM_COMPUTE_ERROR_ON(_mapping == nullptr);
+
+    ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, _ssbo_name));
+    ARM_COMPUTE_GL_CHECK(glUnmapBuffer(GL_SHADER_STORAGE_BUFFER));
+    ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0));
+    _mapping = nullptr;
+}
+
+std::unique_ptr<IMemoryRegion> GCBufferMemoryRegion::extract_subregion(size_t offset, size_t size)
+{
+    ARM_COMPUTE_UNUSED(offset, size);
+    return nullptr;
+}
+} // namespace arm_compute
+\ No newline at end of file