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#include <QImage>
#include "surface.h"
#include <stdlib.h>
#include <stdio.h>
XRenderSurf *
xrender_surf_new(Display *disp, Drawable draw, Visual *vis, int w, int h, int alpha)
{
XRenderSurf *rs;
XRenderPictFormat *fmt;
XRenderPictureAttributes att;
rs = (XRenderSurf*)calloc(1, sizeof(XRenderSurf));
if (alpha)
fmt = XRenderFindStandardFormat(disp, PictStandardARGB32);
else
fmt = XRenderFindStandardFormat(disp, PictStandardRGB24);
rs->w = w;
rs->h = h;
rs->depth = fmt->depth;
rs->vis = vis;
rs->draw = XCreatePixmap(disp, draw, w, h, fmt->depth);
att.dither = 1;
att.component_alpha = 1;
att.repeat = 0;
rs->pic = XRenderCreatePicture(disp, rs->draw, fmt,
CPRepeat | CPDither | CPComponentAlpha, &att);
rs->allocated = 1;
return rs;
}
XRenderSurf *
xrender_surf_adopt(Display *disp, Drawable draw, Visual *vis, int w, int h)
{
XRenderSurf *rs;
XRenderPictFormat *fmt;
XRenderPictureAttributes att;
rs = (XRenderSurf*)calloc(1, sizeof(XRenderSurf));
fmt = XRenderFindVisualFormat(disp, vis);
rs->w = w;
rs->h = h;
rs->depth = fmt->depth;
rs->vis = vis;
rs->draw = draw;
att.dither = 1;
att.component_alpha = 1;
att.repeat = 0;
rs->pic = XRenderCreatePicture(disp, rs->draw, fmt, CPRepeat | CPDither | CPComponentAlpha, &att);
rs->allocated = 0;
return rs;
}
void
xrender_surf_free(Display *disp, XRenderSurf *rs)
{
if (rs->allocated) XFreePixmap(disp, rs->draw);
XRenderFreePicture(disp, rs->pic);
free(rs);
}
void
xrender_surf_populate(Display *disp, XRenderSurf *rs, int w, int h, const QImage &img_data)
{
GC gc;
XGCValues gcv;
XImage *xim;
int x, y;
/* yes this isn't optimal - i know.. i just want some data for now */
gc = XCreateGC(disp, rs->draw, 0, &gcv);
xim = XCreateImage(disp, rs->vis, rs->depth, ZPixmap, 0, NULL, w, h, 32, 0);
xim->data = (char*)malloc(xim->bytes_per_line * xim->height);
for (y = 0; y < h; y++)
{
for (x = 0; x < w; x++)
{
QRgb pixel;
int a, r, g, b;
pixel = img_data.pixel(x, y);
a = (pixel >> 24) & 0xff;
r = (pixel >> 16) & 0xff;
g = (pixel >> 8 ) & 0xff;
b = (pixel ) & 0xff;
r = (r * (a + 1)) / 256;
g = (g * (a + 1)) / 256;
b = (b * (a + 1)) / 256;
XPutPixel(xim, x, y, (a << 24) | (r << 16) | (g << 8) | b);
}
}
XPutImage(disp, rs->draw, gc, xim, 0, 0, 0, 0, w, h);
free(xim->data);
xim->data = NULL;
XDestroyImage(xim);
XFreeGC(disp, gc);
}
void
xrender_surf_prepare(Display *disp, XRenderSurf *src, int w, int h,
int transformations, SurfaceFilter filter)
{
if (transformations) {
XTransform xf;
xf.matrix[0][0] = (65536 * src->w) / (w*2); xf.matrix[0][1] = 0; xf.matrix[0][2] = 0;
xf.matrix[1][0] = 0; xf.matrix[1][1] = (65536 * src->h) / h; xf.matrix[1][2] = 0;
xf.matrix[2][0] = 0; xf.matrix[2][1] = 0; xf.matrix[2][2] = 65536;
XRenderSetPictureTransform(disp, src->pic, &xf);
}
switch(filter) {
case SurfaceBilinear:
XRenderSetPictureFilter(disp, src->pic, "bilinear", NULL, 0);
break;
case SurfaceNearest:
XRenderSetPictureFilter(disp, src->pic, "nearest", NULL, 0);
break;
default:
break;
}
}
void xrender_surf_blend(Display *disp, int op, XRenderSurf *src, XRenderSurf *mask, XRenderSurf *dst,
int src_x, int src_y,
int mask_x, int mask_y,
int dst_x, int dst_y,
unsigned int width, unsigned int height)
{
XRenderComposite(disp, op, src->pic, mask ? mask->pic : None, dst->pic, src_x, src_y,
mask_x, mask_y, dst_x, dst_y, width, height);
}
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