nuclear@4: #include <GL/gl.h>
nuclear@4: #include <X11/Xlib.h>
nuclear@4: #include "texture.h"
nuclear@4: #include "logger.h"
nuclear@4: 
nuclear@4: Texture::Texture()
nuclear@4: {
nuclear@4: 	glGenTextures(1, &tex);
nuclear@4: 	glBindTexture(GL_TEXTURE_2D, tex);
nuclear@4: 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
nuclear@4: 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
nuclear@4: 
nuclear@4: 	width = height = 0;
nuclear@4: }
nuclear@4: 
nuclear@4: Texture::~Texture()
nuclear@4: {
nuclear@4: 	if(tex) {
nuclear@4: 		glDeleteTextures(1, &tex);
nuclear@4: 	}
nuclear@4: }
nuclear@4: 
nuclear@4: void Texture::set_image(int x, int y, unsigned char *pix)
nuclear@4: {
nuclear@4: 	glBindTexture(GL_TEXTURE_2D, tex);
nuclear@4: 
nuclear@4: 	if(x == width && y == height) {
nuclear@4: 		if(pix) {
nuclear@4: 			glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, x, y, GL_BGRA, GL_UNSIGNED_BYTE, pix);
nuclear@4: 		}
nuclear@4: 
nuclear@4: 	} else {
nuclear@4: 		width = x;
nuclear@4: 		height = y;
nuclear@4: 		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, x, y, 0, GL_BGRA, GL_UNSIGNED_BYTE,
nuclear@4: 				pix ? pix : 0);
nuclear@4: 	}
nuclear@4: }
nuclear@4: 
nuclear@4: void Texture::set_image(Display *dpy, Pixmap pixmap)
nuclear@4: {
nuclear@4: 	Window root_ret;
nuclear@4: 	int x, y;
nuclear@4: 	unsigned int w, h, border, depth;
nuclear@4: 	XGetGeometry(dpy, pixmap, &root_ret, &x, &y, &w, &h, &border, &depth);
nuclear@4: 
nuclear@4: 	XImage *ximg = XGetImage(dpy, pixmap, 0, 0, w, h, 0xffffffff, ZPixmap);
nuclear@4: 	if(!ximg) {
nuclear@4: 		log_error("XGetImage failed to create an image from the window pixmap\n");
nuclear@4: 		return;
nuclear@4: 	}
nuclear@4: 
nuclear@4: 	glBindTexture(GL_TEXTURE_2D, tex);
nuclear@4: 
nuclear@4: 	if((int)w == width && (int)h == height) {
nuclear@4: 		glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, GL_BGRA, GL_UNSIGNED_BYTE, ximg->data);
nuclear@4: 	} else {
nuclear@4: 		width = w;
nuclear@4: 		height = h;
nuclear@4: 		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_BGRA, GL_UNSIGNED_BYTE, ximg->data);
nuclear@4: 	}
nuclear@4: }
nuclear@4: 
nuclear@4: int Texture::get_width() const
nuclear@4: {
nuclear@4: 	return width;
nuclear@4: }
nuclear@4: 
nuclear@4: int Texture::get_height() const
nuclear@4: {
nuclear@4: 	return height;
nuclear@4: }
nuclear@4: 
nuclear@4: unsigned int Texture::get_id() const
nuclear@4: {
nuclear@4: 	return tex;
nuclear@4: }