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/*
* Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
* Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Vector.h>
#include <LibGL/GL/gl.h>
#include <LibGfx/Vector4.h>
namespace GL {
class MipMap {
public:
MipMap() = default;
~MipMap() = default;
void set_width(GLsizei width) { m_width = width; }
void set_height(GLsizei height) { m_height = height; }
GLsizei width() const { return m_width; }
GLsizei height() const { return m_height; }
Vector<u32>& pixel_data() { return m_pixel_data; }
const Vector<u32>& pixel_data() const { return m_pixel_data; }
FloatVector4 texel(unsigned x, unsigned y) const
{
if (x >= (unsigned)m_width || y >= (unsigned)m_height)
return { 0, 0, 0, 0 };
u32 texel = m_pixel_data.at(y * m_width + x);
return {
((texel >> 16) & 0xff) / 255.f,
((texel >> 8) & 0xff) / 255.f,
(texel & 0xff) / 255.f,
((texel >> 24) & 0xff) / 255.f
};
}
private:
GLsizei m_width { 0 };
GLsizei m_height { 0 };
Vector<u32> m_pixel_data;
};
}
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