Compute Library
 21.02
GCBufferAllocator.cpp
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1 /*
2  * Copyright (c) 2018-2020 Arm Limited.
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4  * SPDX-License-Identifier: MIT
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25 
26 #include "arm_compute/core/Error.h"
29 
30 #include <cstddef>
31 
32 namespace arm_compute
33 {
34 void *GCBufferAllocator::allocate(size_t size, size_t alignment)
35 {
36  ARM_COMPUTE_UNUSED(alignment);
37 
38  auto *gl_ssbo_name = new GLuint;
39  ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, *gl_ssbo_name));
40  ARM_COMPUTE_GL_CHECK(glBufferData(GL_SHADER_STORAGE_BUFFER, static_cast<GLsizeiptr>(size), nullptr, GL_STATIC_DRAW));
41  ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0));
42 
43  return reinterpret_cast<void *>(gl_ssbo_name);
44 }
45 
46 void GCBufferAllocator::free(void *ptr)
47 {
48  ARM_COMPUTE_ERROR_ON(ptr == nullptr);
49  auto *gl_ssbo_name = reinterpret_cast<GLuint *>(ptr);
50  ARM_COMPUTE_GL_CHECK(glDeleteBuffers(1, gl_ssbo_name));
51  delete gl_ssbo_name;
52 }
53 
54 std::unique_ptr<IMemoryRegion> GCBufferAllocator::make_region(size_t size, size_t alignment)
55 {
56  ARM_COMPUTE_UNUSED(alignment);
57  return std::make_unique<GCBufferMemoryRegion>(size);
58 }
59 } // namespace arm_compute
#define ARM_COMPUTE_GL_CHECK(x)
Definition: OpenGLES.h:45
void GL_APIENTRY glDeleteBuffers(GLsizei n, const GLuint *buffers)
Definition: OpenGLES.cpp:529
void * allocate(size_t size, size_t alignment) override
Interface to be implemented by the child class to allocate bytes.
#define ARM_COMPUTE_ERROR_ON(cond)
If the condition is true then an error message is printed and an exception thrown.
Definition: Error.h:466
Copyright (c) 2017-2021 Arm Limited.
void GL_APIENTRY glBindBuffer(GLenum target, GLuint buffer)
Definition: OpenGLES.cpp:490
#define ARM_COMPUTE_UNUSED(...)
To avoid unused variables warnings.
Definition: Error.h:152
std::unique_ptr< IMemoryRegion > make_region(size_t size, size_t alignment) override
Create self-managed memory region.
void free(void *ptr) override
Interface to be implemented by the child class to free the allocated tensor.
Wrapper to configure the Khronos EGL and OpenGL ES C header.
void GL_APIENTRY glBufferData(GLenum target, GLsizeiptr size, const GLvoid *data, GLenum usage)
Definition: OpenGLES.cpp:516