58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
#include "pch.h"
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#include "texture.hpp"
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#include "image.hpp"
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bool Texture2D::create(int width, int height, GLint format, const uint8_t* data)
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{
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m_width = width;
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m_height = height;
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m_format = format;
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glGenTextures(1, &m_tex);
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bind();
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glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, GL_UNSIGNED_BYTE, data);
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unbind();
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return true;
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}
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bool Texture2D::create(const Image& img)
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{
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static GLint formats[] = { GL_RED, GL_RG, GL_RGB, GL_RGBA };
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return create(img.width, img.height, formats[img.comp - 1], img.data());
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}
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bool Texture2D::load(std::string filename)
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{
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Image img;
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if (!img.load(filename))
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return false;
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return create(img);
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}
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void Texture2D::update(const uint8_t* data)
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{
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bind();
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glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, m_width, m_height, m_format, GL_UNSIGNED_BYTE, data);
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}
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bool Sampler::create(GLint filter /*= GL_LINEAR*/, GLint wrap /*= GL_CLAMP_TO_EDGE*/)
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{
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glGenSamplers(1, &id);
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if (id == 0)
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return false;
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set(filter, wrap);
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return true;
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}
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void Sampler::set(GLint filter /*= GL_LINEAR*/, GLint wrap /*= GL_CLAMP_TO_EDGE*/)
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{
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glSamplerParameteri(id, GL_TEXTURE_WRAP_S, wrap);
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glSamplerParameteri(id, GL_TEXTURE_WRAP_T, wrap);
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glSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, filter);
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glSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, filter);
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}
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void Sampler::bind(int unit)
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{
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current_unit = unit;
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glBindSampler(unit, id);
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}
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void Sampler::unbind()
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{
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glBindSampler(current_unit, 0);
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}
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