51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
#include "texture.h"
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Texture::Texture(const char* filename) : path(filename)
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{
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int widthImg, heightImg, nrComponents;
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stbi_set_flip_vertically_on_load(true);
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unsigned char* bytes = stbi_load(filename, &widthImg, &heightImg, &nrComponents, 0);
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if (not bytes)
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{
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std::cout << "Failed to load texture" << std::endl;
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throw;
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}
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glGenTextures(1, &ID);
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glBindTexture(GL_TEXTURE_2D, ID);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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GLenum format;
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if (nrComponents == 1)
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format = GL_RED;
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else if (nrComponents == 3)
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format = GL_RGB;
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else if (nrComponents == 4)
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format = GL_RGBA;
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glTexImage2D(GL_TEXTURE_2D, 0, format, widthImg, heightImg, 0, format, GL_UNSIGNED_BYTE, bytes);
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glGenerateMipmap(GL_TEXTURE_2D);
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stbi_image_free(bytes);
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glBindTexture(GL_TEXTURE_2D, 0);
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}
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void Texture::texUnit(Shader shader, const char* uniform, GLuint unit) {
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shader.SetInt(uniform,unit);
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}
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void Texture::Bind() {
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glBindTexture(GL_TEXTURE_2D, ID);
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}
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void Texture::Unbind() {
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glBindTexture(GL_TEXTURE_2D, 0);
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}
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void Texture::Delete() {
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glDeleteTextures(1, &ID);
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} |