/**
* Retrieve __DRIbuffer from the DRI loader.
*/
static __DRIbuffer *
dri2_drawable_get_buffers(struct dri_drawable *drawable,
const enum st_attachment_type *atts,
unsigned *count)
{
__DRIdrawable *dri_drawable = drawable->dPriv;
const __DRIdri2LoaderExtension *loader = drawable->sPriv->dri2.loader;
boolean with_format;
__DRIbuffer *buffers;
int num_buffers;
unsigned attachments[10];
unsigned num_attachments, i;
assert(loader);
with_format = dri_with_format(drawable->sPriv);
num_attachments = 0;
/* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
if (!with_format)
attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
for (i = 0; i < *count; i++) {
enum pipe_format format;
unsigned bind;
int att, depth;
dri_drawable_get_format(drawable, atts[i], &format, &bind);
if (format == PIPE_FORMAT_NONE)
continue;
switch (atts[i]) {
case ST_ATTACHMENT_FRONT_LEFT:
/* already added */
if (!with_format)
continue;
att = __DRI_BUFFER_FRONT_LEFT;
break;
case ST_ATTACHMENT_BACK_LEFT:
att = __DRI_BUFFER_BACK_LEFT;
break;
case ST_ATTACHMENT_FRONT_RIGHT:
att = __DRI_BUFFER_FRONT_RIGHT;
break;
case ST_ATTACHMENT_BACK_RIGHT:
att = __DRI_BUFFER_BACK_RIGHT;
break;
default:
continue;
}
/*
* In this switch statement we must support all formats that
* may occur as the stvis->color_format.
*/
switch(format) {
case PIPE_FORMAT_B8G8R8A8_UNORM:
depth = 32;
break;
case PIPE_FORMAT_B8G8R8X8_UNORM:
depth = 24;
break;
case PIPE_FORMAT_B5G6R5_UNORM:
depth = 16;
break;
default:
depth = util_format_get_blocksizebits(format);
assert(!"Unexpected format in dri2_drawable_get_buffers()");
}
attachments[num_attachments++] = att;
if (with_format) {
attachments[num_attachments++] = depth;
}
}
if (with_format) {
num_attachments /= 2;
buffers = loader->getBuffersWithFormat(dri_drawable,
&dri_drawable->w, &dri_drawable->h,
attachments, num_attachments,
&num_buffers, dri_drawable->loaderPrivate);
}
else {
buffers = loader->getBuffers(dri_drawable,
&dri_drawable->w, &dri_drawable->h,
attachments, num_attachments,
&num_buffers, dri_drawable->loaderPrivate);
}
if (buffers)
*count = num_buffers;
return buffers;
}
/**
* Retrieve __DRIbuffer from the DRI loader.
*/
static __DRIbuffer *
dri2_drawable_get_buffers(struct dri_drawable *drawable,
const enum st_attachment_type *statts,
unsigned *count)
{
__DRIdrawable *dri_drawable = drawable->dPriv;
struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
boolean with_format;
__DRIbuffer *buffers;
int num_buffers;
unsigned attachments[10];
unsigned num_attachments, i;
assert(loader);
with_format = dri_with_format(drawable->sPriv);
num_attachments = 0;
/* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
if (!with_format)
attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
for (i = 0; i < *count; i++) {
enum pipe_format format;
unsigned bind;
int att, bpp;
dri_drawable_get_format(drawable, statts[i], &format, &bind);
if (format == PIPE_FORMAT_NONE)
continue;
switch (statts[i]) {
case ST_ATTACHMENT_FRONT_LEFT:
/* already added */
if (!with_format)
continue;
att = __DRI_BUFFER_FRONT_LEFT;
break;
case ST_ATTACHMENT_BACK_LEFT:
att = __DRI_BUFFER_BACK_LEFT;
break;
case ST_ATTACHMENT_FRONT_RIGHT:
att = __DRI_BUFFER_FRONT_RIGHT;
break;
case ST_ATTACHMENT_BACK_RIGHT:
att = __DRI_BUFFER_BACK_RIGHT;
break;
case ST_ATTACHMENT_DEPTH_STENCIL:
att = __DRI_BUFFER_DEPTH_STENCIL;
break;
default:
att = -1;
break;
}
bpp = util_format_get_blocksizebits(format);
if (att >= 0) {
attachments[num_attachments++] = att;
if (with_format) {
attachments[num_attachments++] = bpp;
}
}
}
if (with_format) {
num_attachments /= 2;
buffers = loader->getBuffersWithFormat(dri_drawable,
&dri_drawable->w, &dri_drawable->h,
attachments, num_attachments,
&num_buffers, dri_drawable->loaderPrivate);
}
else {
buffers = loader->getBuffers(dri_drawable,
&dri_drawable->w, &dri_drawable->h,
attachments, num_attachments,
&num_buffers, dri_drawable->loaderPrivate);
}
if (buffers) {
/* set one cliprect to cover the whole dri_drawable */
dri_drawable->x = 0;
dri_drawable->y = 0;
dri_drawable->backX = 0;
dri_drawable->backY = 0;
dri_drawable->numClipRects = 1;
dri_drawable->pClipRects[0].x1 = 0;
dri_drawable->pClipRects[0].y1 = 0;
dri_drawable->pClipRects[0].x2 = dri_drawable->w;
dri_drawable->pClipRects[0].y2 = dri_drawable->h;
dri_drawable->numBackClipRects = 1;
dri_drawable->pBackClipRects[0].x1 = 0;
dri_drawable->pBackClipRects[0].y1 = 0;
dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
*count = num_buffers;
}
return buffers;
}
