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/*
* Copyright (C) 2024 Jani Hautakangas <jani@kodegood.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "TextureMapperGPUBuffer.h"
namespace WebCore {
TextureMapperGPUBuffer::TextureMapperGPUBuffer(size_t size, Type type, Usage usage)
: m_size(size)
, m_target((type == Type::Vertex) ? GL_ARRAY_BUFFER : GL_ELEMENT_ARRAY_BUFFER)
, m_usage((usage == Usage::Dynamic) ? GL_DYNAMIC_DRAW : GL_STATIC_DRAW)
{
if (!size)
return;
glGenBuffers(1, &m_id);
if (m_id) {
glBindBuffer(m_target, m_id);
glBufferData(m_target, m_size, nullptr, m_usage);
if (glGetError() != GL_NO_ERROR) {
glDeleteBuffers(1, &m_id);
m_id = 0;
}
}
}
TextureMapperGPUBuffer::~TextureMapperGPUBuffer()
{
if (m_id) {
glDeleteBuffers(1, &m_id);
m_id = 0;
}
}
bool TextureMapperGPUBuffer::updateData(const void* data, size_t offset, size_t size)
{
if (m_id) {
glBindBuffer(m_target, m_id);
glBufferData(m_target, m_size, nullptr, m_usage); // Invalidate. No need to preserve previous content
if (glGetError() != GL_NO_ERROR)
return false;
glBufferSubData(m_target, offset, size, data);
return true;
}
return false;
}
} // namespace WebCore
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