From a556b45abf18f1bd509daaf63b66b7d55e9fd291 Mon Sep 17 00:00:00 2001
From: jjesswan <jessica_wan@brown.edu>
Date: Mon, 22 Apr 2024 21:56:26 -0400
Subject: add engine version

---
 engine-ocean/Graphics/GLWrappers/texture.cpp | 91 ++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 engine-ocean/Graphics/GLWrappers/texture.cpp

(limited to 'engine-ocean/Graphics/GLWrappers/texture.cpp')

diff --git a/engine-ocean/Graphics/GLWrappers/texture.cpp b/engine-ocean/Graphics/GLWrappers/texture.cpp
new file mode 100644
index 0000000..1c76165
--- /dev/null
+++ b/engine-ocean/Graphics/GLWrappers/texture.cpp
@@ -0,0 +1,91 @@
+#include "texture.h"
+
+#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image.h"
+
+#include <iostream>
+
+#include "../debug.h"
+
+Texture::Texture(int width, int height, GLenum texUnit, GLint internalFormat, GLenum texTarget):
+    m_texTarget(texTarget),
+    m_texUnit(texUnit)
+{
+    glGenTextures(1, &m_handle);
+    bind();
+    glTexParameteri(m_texTarget, GL_TEXTURE_WRAP_S, GL_REPEAT);
+    glTexParameteri(m_texTarget, GL_TEXTURE_WRAP_T, GL_REPEAT);
+    glTexParameteri(m_texTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+    glTexParameteri(m_texTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+    glTexImage2D(m_texTarget, 0, internalFormat, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+    m_height = height;
+    m_width = width;
+    unbind();
+}
+
+Texture::Texture(std::string filepath, GLenum texUnit, GLint internalFormat, GLenum texTarget):
+    m_texTarget(texTarget),
+    m_texUnit(texUnit)
+{
+    glGenTextures(1, &m_handle);
+    bind();
+    glTexParameteri(m_texTarget, GL_TEXTURE_WRAP_S, GL_REPEAT);
+    glTexParameteri(m_texTarget, GL_TEXTURE_WRAP_T, GL_REPEAT);
+    glTexParameteri(m_texTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(m_texTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    stbi_set_flip_vertically_on_load(1);
+    int width, height, numChannels;
+    unsigned char* data = stbi_load(filepath.c_str(), &width, &height, &numChannels, 4);
+    if (stbi_failure_reason()){
+        std::cout << stbi_failure_reason() << std::endl;
+    }
+    glTexImage2D(m_texTarget, 0, internalFormat, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
+    m_height = height;
+    m_width = width;
+    stbi_image_free(data);
+    unbind();
+}
+
+Texture::~Texture(){
+    glDeleteTextures(1, &m_handle);
+}
+
+void Texture::bind(){
+    glActiveTexture(m_texUnit);
+    glBindTexture(m_texTarget, m_handle);
+}
+
+void Texture::bind(GLenum texUnit){
+    glActiveTexture(texUnit);
+    glBindTexture(m_texTarget, m_handle);
+}
+
+void Texture::unbind(){
+    glActiveTexture(m_texUnit);
+    glBindTexture(m_texTarget, 0);
+}
+
+void Texture::unbind(GLenum texUnit){
+    glActiveTexture(texUnit);
+    glBindTexture(m_texTarget, 0);
+}
+
+GLuint Texture::getHandle(){
+    return m_handle;
+}
+
+GLuint Texture::getTexUnitUint(){
+    return GLuint(m_texUnit) - GLuint(GL_TEXTURE0);
+}
+
+GLenum Texture::getTexUnitEnum(){
+    return m_texUnit;
+}
+
+int Texture::getWidth(){
+    return m_width;
+}
+
+int Texture::getHeight(){
+    return m_width;
+}
-- 
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