Remove OpenGL ES support

Remove the following:
 - Relevant backend kernels
 - Relevant backend functions
 - Relevant backend validation tests
 - Relevant backend specific examples
 - Remove backend support from Graph API
 - Remove backend support from build system

Update documentation

Resolves: COMPMID-4149

Change-Id: Id0621d6ee35169754de458103907aaba4ef770c0
Signed-off-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5097
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>

4 files changed, 0 insertions, 245 deletions

diff --git a/arm_compute/graph/backends/GLES/GCDeviceBackend.h b/arm_compute/graph/backends/GLES/GCDeviceBackend.h
deleted file mode 100644
index 41805cdbfa..0000000000
--- a/arm_compute/graph/backends/GLES/GCDeviceBackend.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (c) 2018-2019 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.
- */
-#ifndef ARM_COMPUTE_GRAPH_GCDEVICEBACKEND_H
-#define ARM_COMPUTE_GRAPH_GCDEVICEBACKEND_H
-
-#include "arm_compute/graph/IDeviceBackend.h"
-
-#include "arm_compute/runtime/GLES_COMPUTE/GCBufferAllocator.h"
-
-namespace arm_compute
-{
-namespace graph
-{
-namespace backends
-{
-/** GLES Compute device backend */
-class GCDeviceBackend final : public IDeviceBackend
-{
-public:
-    /** Default Constructor */
-    GCDeviceBackend();
-
-    // Inherited overridden methods
-    void initialize_backend() override;
-    void setup_backend_context(GraphContext &ctx) override;
-    void release_backend_context(GraphContext &ctx) override;
-    bool                           is_backend_supported() override;
-    IAllocator                    *backend_allocator() override;
-    std::unique_ptr<ITensorHandle> create_tensor(const Tensor &tensor) override;
-    std::unique_ptr<ITensorHandle> create_subtensor(ITensorHandle *parent, TensorShape shape, Coordinates coords, bool extend_parent) override;
-    std::unique_ptr<arm_compute::IFunction> configure_node(INode &node, GraphContext &ctx) override;
-    Status validate_node(INode &node) override;
-    std::shared_ptr<arm_compute::IMemoryManager> create_memory_manager(MemoryManagerAffinity affinity) override;
-    std::shared_ptr<arm_compute::IWeightsManager> create_weights_manager() override;
-
-private:
-    bool              _initialized; /**< Flag that specifies if the backend has been default initialized */
-    GCBufferAllocator _allocator;   /**< GLES buffer affinity allocator */
-};
-} // namespace backends
-} // namespace graph
-} // namespace arm_compute
-#endif //ARM_COMPUTE_GRAPH_GCDEVICEBACKEND_H
diff --git a/arm_compute/graph/backends/GLES/GCFunctionFactory.h b/arm_compute/graph/backends/GLES/GCFunctionFactory.h
deleted file mode 100644
index e5c00e5b29..0000000000
--- a/arm_compute/graph/backends/GLES/GCFunctionFactory.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (c) 2018-2019 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.
- */
-#ifndef ARM_COMPUTE_GRAPH_GCFUNCTIONFACTORY_H
-#define ARM_COMPUTE_GRAPH_GCFUNCTIONFACTORY_H
-
-#include "arm_compute/runtime/IFunction.h"
-
-#include <memory>
-
-namespace arm_compute
-{
-namespace graph
-{
-// Forward declarations
-class INode;
-class GraphContext;
-
-namespace backends
-{
-/** Factory for generating GLES compute backend functions **/
-class GCFunctionFactory final
-{
-public:
-    /** Create a backend execution function depending on the node type
-     *
-     * @param[in] node Node to create the backend function for
-     * @param[in] ctx  Context to use
-     *
-     * @return Backend function
-     */
-    static std::unique_ptr<arm_compute::IFunction> create(INode *node, GraphContext &ctx);
-};
-} // namespace backends
-} // namespace graph
-} // namespace arm_compute
-#endif //ARM_COMPUTE_GRAPH_GCFUNCTIONFACTORY_H
diff --git a/arm_compute/graph/backends/GLES/GCNodeValidator.h b/arm_compute/graph/backends/GLES/GCNodeValidator.h
deleted file mode 100644
index ab3864acf7..0000000000
--- a/arm_compute/graph/backends/GLES/GCNodeValidator.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (c) 2018-2019 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.
- */
-#ifndef ARM_COMPUTE_GRAPH_GCNODEVALIDATOR_H
-#define ARM_COMPUTE_GRAPH_GCNODEVALIDATOR_H
-
-#include "arm_compute/core/Error.h"
-
-namespace arm_compute
-{
-namespace graph
-{
-// Forward declarations
-class INode;
-
-namespace backends
-{
-class GCNodeValidator final
-{
-public:
-    /** Validate a node
-     *
-     * @param[in] node Node to validate
-     *
-     * @return An error status
-     */
-    static Status validate(INode *node);
-};
-} // namespace backends
-} // namespace graph
-} // namespace arm_compute
-#endif //ARM_COMPUTE_GRAPH_GCNODEVALIDATOR_H
diff --git a/arm_compute/graph/backends/GLES/GCTensorHandle.h b/arm_compute/graph/backends/GLES/GCTensorHandle.h
deleted file mode 100644
index bf4897a3b9..0000000000
--- a/arm_compute/graph/backends/GLES/GCTensorHandle.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Copyright (c) 2018-2019 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.
- */
-#ifndef ARM_COMPUTE_GRAPH_GCTENSORHANDLE_H
-#define ARM_COMPUTE_GRAPH_GCTENSORHANDLE_H
-
-#include "arm_compute/graph/ITensorHandle.h"
-
-#include "arm_compute/runtime/GLES_COMPUTE/GCTensor.h"
-
-namespace arm_compute
-{
-namespace graph
-{
-namespace backends
-{
-/** GLES compute tensor handle interface object **/
-class GCTensorHandle final : public ITensorHandle
-{
-public:
-    /** Default Constructor
-     *
-     * @param[in] info Tensor metadata
-     */
-    GCTensorHandle(const ITensorInfo &info);
-    /** Destructor: free the tensor's memory */
-    ~GCTensorHandle() = default;
-    /** Allow instances of this class to be move constructed */
-    GCTensorHandle(GCTensorHandle &&) = default;
-    /** Allow instances of this class to be moved */
-    GCTensorHandle &operator=(GCTensorHandle &&) = default;
-
-    // Inherited overridden methods
-    void allocate() override;
-    void free() override;
-    void manage(IMemoryGroup *mg) override;
-    void map(bool blocking) override;
-    void                        unmap() override;
-    void                        release_if_unused() override;
-    arm_compute::ITensor       &tensor() override;
-    const arm_compute::ITensor &tensor() const override;
-    ITensorHandle              *parent_handle() override;
-    bool                        is_subtensor() const override;
-    Target                      target() const override;
-
-private:
-    arm_compute::GCTensor _tensor; /**< Backend Tensor */
-};
-} // namespace backends
-} // namespace graph
-} // namespace arm_compute
-#endif /* ARM_COMPUTE_GRAPH_GCTENSORHANDLE_H */