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Completed work on X11_CreateTexture. Added lots of safety features.

Browse source 
These include support for drawing a texture using the core protocol
while other textures are drawn using Xrender if Xrender does not support
the color format of the said texture or any other fault with Xrender.
This commit is contained in:
Sunny Sachanandani 2010-05-28 20:40:09 +05:30
parent aef216819f
commit 7373f666db
1 changed files with 72 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

87
src/video/x11/SDL_x11render.c
View file

@ -122,6 +122,7 @@ typedef struct
XRenderPictFormat* picture_fmt;
XRenderPictureAttributes picture_attr;
unsigned int picture_attr_valuemask;
SDL_bool xrender_available;
#endif
XImage *image;
#ifndef NO_SHARED_MEMORY
@ -218,10 +219,16 @@ X11_CreateRenderer(SDL_Window * window, Uint32 flags)
if(XRenderQueryExtension(data->display, &event_basep, &error_basep) == True) {
data->xrender_available = SDL_TRUE;
data->xwindow_pict_fmt = XRenderFindVisualFormat(data->display, data->visual);
if(!xwindow_pict_fmt) {
data->xrender_available = SDL_FALSE;
}
data->xwindow_pict_attr.graphics_exposures = False;
data->xwindow_pict_attr_valuemask = CPGraphicsExposure;
data->xwindow_pict = XRenderCreatePicture(data->display, data->xwindow, data->xwindow_pict_fmt,
data->xwindow_pict_attr_valuemask, &data->xwindow_pict_attr);
if(!data->xwindow_pict) {
data->xrender_available = SDL_FALSE;
}
}
else {
data->xrender_available = SDL_FALSE;
@ -275,9 +282,16 @@ X11_CreateRenderer(SDL_Window * window, Uint32 flags)
SDL_SetError("XCreatePixmap() failed");
return NULL;
}
data->pixmap_picts[i] =
XCreatePicture(data->display, data->pixmap[i], data->xwindow_pict_fmt,
data->xwindow_pict_attr_valuemask, &xwindow_pict_attr);
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
if(data->xrender_available == SDL_TRUE) {
data->pixmap_picts[i] =
XCreatePicture(data->display, data->pixmap[i], data->xwindow_pict_fmt,
data->xwindow_pict_attr_valuemask, &xwindow_pict_attr);
if(!data->pixmap_picts[i]) {
data->xrender_available = SDL_FALSE;
}
}
#endif
}
if (n > 0) {
data->drawable = data->pixmaps[0];
@ -353,9 +367,14 @@ X11_DisplayModeChanged(SDL_Renderer * renderer)
return -1;
}
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
data->pictures[i] =
XCreatePicture(data->display, data->pixmap[i], data->xwindow_pict_fmt,
data->xwindow_pict_attr_valuemask, &data->xwindow_pict_attr);
if(data->xrender_available == SDL_TRUE) {
data->pictures[i] =
XCreatePicture(data->display, data->pixmap[i], data->xwindow_pict_fmt,
data->xwindow_pict_attr_valuemask, &data->xwindow_pict_attr);
if(!data->pictures[i]) {
data->xrender_available = SDL_FALSE;
}
}
#endif
}
if (n > 0) {
@ -378,6 +397,7 @@ X11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
X11_TextureData *data;
int pitch_alignmask = ((renderdata->scanline_pad / 8) - 1);
data = (X11_TextureData *) SDL_calloc(1, sizeof(*data));
if (!data) {
SDL_OutOfMemory();
@ -393,10 +413,10 @@ X11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
}
data->format = display->current_mode.format;
} else {
/* The image/pixmap depth must be the same as the window or you
get a BadMatch error when trying to putimage or copyarea.
This BadMatch error
*/
/* If Xrender support is builtin we only need to check whether
Xrender is available at runtime. If it is available there
can be no BadMatch error since Xrender takes care of that.
*/
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
if(renderdata->xrender_available == SDL_False) {
if (texture->format != display->current_mode.format) {
@ -405,6 +425,10 @@ X11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
}
}
#else
/* The image/pixmap depth must be the same as the window or you
get a BadMatch error when trying to putimage or copyarea.
This BadMatch error
*/
if (texture->format != display->current_mode.format) {
SDL_SetError("Texture format doesn't match window format");
return -1;
@ -491,11 +515,44 @@ X11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
}
#ifdef SDL_VIDEO_DRIVER_X11_XRENDER
data->picture_fmt =
XRenderFindVisualFormat(renderdata->display,
data->picture =
XCreatePicture(renderdata->display, data->pixmap,
if(renderdata->xrender_available) {
data->xrender_available = SDL_TRUE;
unsigned long x11_fmt_mask; // Format mask
XRenderPictFormat x11_templ_fmt; // Format template
x11_fmt_mask =
(PictFormatDepth | PictFormatRedMask | PictFormatGreenMask
| PictFormatBlueMask);
x11_templ_fmt.depth = (data->format).BitsPerPixel;
x11_temp_fmt.direct.redMask = (data->format).Rmask;
x11_temp_fmt.direct.greenMask = (data->format).Gmask;
x11_temp_fmt.direct.blueMask = (data->format).Bmask;
x11_temp_fmt.direct.alphaMask = (data->format).Amask;
/* Return one matching XRenderPictFormat */
data->pict_fmt =
XRenderFindFormat(renderdata->display, x11_fmt_mask, &x11_templ_fmt, 1);
if(!data->pict_fmt) {
data->xrender_available = SDL_FALSE;
}
data->picture_attr_valuemask = CPGraphicsExposure;
(data->picture_attr).graphics_exposures = False;
data->picture =
XCreatePicture(renderdata->display, data->pixmap, data->picture_fmt,
data->picture_attr_valuemask, &(data->picture_attr));
if(!data->picture) {
data->xrender_available = SDL_FALSE;
}
}
/* We thought we could render the texture with Xrender but this was
not possible for some reason. Now we must ensure that texture
format and window format match to avoid a BadMatch error.
*/
if(data->xrender_available == SDL_FALSE) {
if (texture->format != display->current_mode.format) {
SDL_SetError("Texture format doesn't match window format");
return -1;
}
}
#endif
data->image =
XCreateImage(renderdata->display, renderdata->visual,
renderdata->depth, ZPixmap, 0, NULL, texture->w,