lauchmelder/OpenGL-utility
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Added support for PNG

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This commit is contained in:
Robert 2021-01-21 16:11:41 +01:00
parent 7571b3943d
commit 8174ebaee4
5 changed files with 27 additions and 6 deletions
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14
src/texture.cpp
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@ -1,4 +1,5 @@
#include "texture.hpp"
#include <iostream>
#define STB_IMAGE_IMPLEMENTATION
#include <stb/stb_image.h>
@ -40,7 +41,18 @@ namespace oglu
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
GLenum pixelFormat;
switch (nrChannels)
{
case 3: pixelFormat = GL_RGB; break;
case 4: pixelFormat = GL_RGBA; break;
default:
glDeleteTextures(1, &texture);
stbi_image_free(data);
throw std::runtime_error(std::string("Texture has unsupported pixel format: " + std::string(filename)));
}
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, pixelFormat, GL_UNSIGNED_BYTE, data);
glGenerateMipmap(GL_TEXTURE_2D);
stbi_image_free(data);