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-rw-r--r--texture.cpp27
1 files changed, 26 insertions, 1 deletions
diff --git a/texture.cpp b/texture.cpp
index 4c9cb6d..ba7d9c7 100644
--- a/texture.cpp
+++ b/texture.cpp
@@ -1,7 +1,33 @@
#include <stdexcept>
#include "texture.h"
+#include "stb_image.h"
#include "gl.h"
+Texture::Texture() {
+ glGenTextures(1, &texture);
+}
+
+Texture::Texture(const std::string& filename) {
+ glGenTextures(1, &texture);
+ load(filename);
+}
+
+void Texture::load(const std::string& filename) {
+ int w, h, ch;
+ uint8_t* data = stbi_load(filename.c_str(), &w, &h, &ch, 4);
+
+ unsigned int format;
+ if(ch == 4) {
+ format = GL_RGBA;
+ } else {
+ format = GL_RGB;
+ }
+
+ build(data, format, w, h);
+
+ stbi_image_free(data);
+}
+
void Texture::bind() const {
glBindTexture(GL_TEXTURE_2D, texture);
}
@@ -26,7 +52,6 @@ void Texture::build(void* data, unsigned int format, unsigned int w, unsigned in
width = w;
height = h;
- glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);