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Use XDamage to optimise drawing operations.
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@sunnyps
sunnyps committed Jul 19, 2010
1 parent 7aef911 commit 3b5100f
Showing 1 changed file with 34 additions and 8 deletions.
42 changes: 34 additions & 8 deletions src/video/x11/SDL_x11render.c
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Expand Up @@ -31,6 +31,9 @@
#include "../SDL_pixels_c.h"
#include "../SDL_yuv_sw_c.h"

#include <X11/extensions/Xdamage.h>
#include <X11/extensions/Xfixes.h>

/* X11 renderer implementation */

static SDL_Renderer *X11_CreateRenderer(SDL_Window * window, Uint32 flags);
Expand Down Expand Up @@ -108,6 +111,8 @@ typedef struct
XRenderPictFormat* xwindow_pict_fmt;
GC stencil_gc;
SDL_bool use_xrender;
Damage stencil_damage;
XserverRegion stencil_parts;
#endif
int current_pixmap;
Drawable drawable;
Expand Down Expand Up @@ -295,12 +300,18 @@ X11_CreateRenderer(SDL_Window * window, Uint32 flags)
data->stencil_gc = XCreateGC(data->display, data->stencil,
GCGraphicsExposures, &gcv);
XSetBackground(data->display, data->stencil_gc, 0x00);
XSetForeground(data->display, data->stencil_gc, 0x00);
XFillRectangle(data->display, data->stencil, data->stencil_gc,
0, 0, window->w, window->h);
XSetForeground(data->display, data->stencil_gc, 0xFF);
data->stencil_pict =
XRenderCreatePicture(data->display, data->stencil,
XRenderFindStandardFormat(data->display,
PictStandardA8),
0, NULL);
data->stencil_damage =
XDamageCreate(data->display, data->stencil, XDamageReportNonEmpty);
XDamageSubtract(data->display, data->stencil_damage, None, data->stencil_parts);
data->brush =
XCreatePixmap(data->display, data->xwindow, 1, 1, 32);
XRenderPictureAttributes brush_attr;
Expand Down Expand Up @@ -1001,6 +1012,8 @@ X11_RenderDrawPoints(SDL_Renderer * renderer, const SDL_Point * points,
XPoint *xpoints, *xpoint;
int i, xcount;
SDL_Rect clip, rect;
/*Damage damage;
XserverRegion parts;*/

clip.x = 0;
clip.y = 0;
Expand Down Expand Up @@ -1033,32 +1046,39 @@ X11_RenderDrawPoints(SDL_Renderer * renderer, const SDL_Point * points,
++xpoint;
++xcount;
}
/*

#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
if (data->use_xrender) {
XSetForeground(data->display, data->stencil_gc, 0x00);
XFixesSetGCClipRegion(data->display, data->stencil_gc, 0, 0, data->stencil_parts);
XFillRectangle(data->display, data->stencil, data->stencil_gc,
rect.x, rect.y, rect.w, rect.h);
XFixesSetGCClipRegion(data->display, data->stencil_gc, 0, 0, None);
XSetForeground(data->display, data->stencil_gc, 0xFF);
/*damage =
XDamageCreate(data->display, data->stencil, XDamageReportRawRectangles);*/
XDrawPoints(data->display, data->stencil, data->stencil_gc, xpoints, xcount,
CoordModeOrigin);
XDamageSubtract(data->display, data->stencil_damage, None, data->stencil_parts);
}
#endif*/
#endif
}
/*

#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
if (data->use_xrender) {
XRenderColor foreground;
foreground = xrenderdrawcolor(renderer);
XRenderFillRectangle(data->display, PictOpSrc, data->brush_pict,
&foreground, 0, 0, 1, 1);
XFixesSetPictureClipRegion(data->display, data->drawable_pict, 0, 0, data->stencil_parts);
XRenderComposite(data->display, data->blend_op, data->brush_pict,
data->stencil_pict, data->drawable_pict,
rect.x, rect.y, rect.x, rect.y, rect.x, rect.y, rect.w, rect.h);
XFixesSetPictureClipRegion(data->display, data->drawable_pict, 0, 0, None);
//XDamageDestroy(data->display, damage);
}
else
#endif
*/
{
unsigned long foreground = renderdrawcolor(renderer, 1);
XSetForeground(data->display, data->gc, foreground);
Expand Down Expand Up @@ -1087,6 +1107,8 @@ X11_RenderDrawLines(SDL_Renderer * renderer, const SDL_Point * points,
int i, xcount;
int minx, miny;
int maxx, maxy;
XserverRegion parts;
Damage damage;

clip.x = 0;
clip.y = 0;
Expand All @@ -1095,19 +1117,21 @@ X11_RenderDrawLines(SDL_Renderer * renderer, const SDL_Point * points,
{
Pixmap drawable;
GC gc;
/*
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
if (data->use_xrender) {
drawable = data->stencil;
gc = data->stencil_gc;
XSetForeground(data->display, data->stencil_gc, 0x00);
XFixesSetGCClipRegion(data->display, data->stencil_gc, 0, 0, data->stencil_parts);
XFillRectangle(data->display, data->stencil, data->stencil_gc,
0, 0, window->w, window->h);
XFixesSetGCClipRegion(data->display, data->stencil_gc, 0, 0, None);
XSetForeground(data->display, data->stencil_gc, 0xFF);
/*damage =
XDamageCreate(data->display, data->stencil, XDamageReportRawRectangles);*/
}
else
#endif
*/
{
drawable = data->drawable;
gc = data->gc;
Expand Down Expand Up @@ -1230,18 +1254,20 @@ X11_RenderDrawLines(SDL_Renderer * renderer, const SDL_Point * points,
}
}
}
/*
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
if (data->use_xrender) {
XRenderColor xrforeground = xrenderdrawcolor(renderer);
XRenderFillRectangle(data->display, PictOpSrc, data->brush_pict,
&xrforeground, 0, 0, 1, 1);
XDamageSubtract(data->display, data->stencil_damage, None, data->stencil_parts);
XFixesSetPictureClipRegion(data->display, data->drawable_pict, 0, 0, data->stencil_parts);
XRenderComposite(data->display, data->blend_op, data->brush_pict,
data->stencil_pict, data->drawable_pict,
0, 0, 0, 0, 0, 0, window->w, window->h);
XFixesSetPictureClipRegion(data->display, data->drawable_pict, 0, 0, None);
//XDamageDestroy(data->display, damage);
}
#endif
*/
SDL_stack_free(xpoints);

return 0;
Expand Down

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