/**
* \brief Assign a DRI buffer's DRM region to a renderbuffer.
*
* This is called from intel_update_renderbuffers().
*
* \par Note:
* DRI buffers whose attachment point is DRI2BufferStencil or
* DRI2BufferDepthStencil are handled as special cases.
*
* \param buffer_name is a human readable name, such as "dri2 front buffer",
* that is passed to intel_region_alloc_for_handle().
*
* \see intel_update_renderbuffers()
* \see intel_region_alloc_for_handle()
*/
static void
intel_process_dri2_buffer(struct brw_context *brw,
__DRIdrawable *drawable,
__DRIbuffer *buffer,
struct intel_renderbuffer *rb,
const char *buffer_name)
{
struct intel_region *region = NULL;
if (!rb)
return;
unsigned num_samples = rb->Base.Base.NumSamples;
/* We try to avoid closing and reopening the same BO name, because the first
* use of a mapping of the buffer involves a bunch of page faulting which is
* moderately expensive.
*/
if (num_samples == 0) {
if (rb->mt &&
rb->mt->region &&
rb->mt->region->name == buffer->name)
return;
} else {
if (rb->mt &&
rb->mt->singlesample_mt &&
rb->mt->singlesample_mt->region &&
rb->mt->singlesample_mt->region->name == buffer->name)
return;
}
if (unlikely(INTEL_DEBUG & DEBUG_DRI)) {
fprintf(stderr,
"attaching buffer %d, at %d, cpp %d, pitch %d\n",
buffer->name, buffer->attachment,
buffer->cpp, buffer->pitch);
}
intel_miptree_release(&rb->mt);
region = intel_region_alloc_for_handle(brw->intelScreen,
buffer->cpp,
drawable->w,
drawable->h,
buffer->pitch,
buffer->name,
buffer_name);
if (!region)
return;
rb->mt = intel_miptree_create_for_dri2_buffer(brw,
buffer->attachment,
intel_rb_format(rb),
num_samples,
region);
intel_region_release(®ion);
}
static __DRIimage *
intel_create_image_from_name(__DRIscreen *screen,
int width, int height, int format,
int name, int pitch, void *loaderPrivate)
{
struct intel_screen *intelScreen = screen->driverPrivate;
__DRIimage *image;
int cpp;
image = intel_allocate_image(format, loaderPrivate);
if (image->format == MESA_FORMAT_NONE)
cpp = 1;
else
cpp = _mesa_get_format_bytes(image->format);
image->region = intel_region_alloc_for_handle(intelScreen,
cpp, width, height,
pitch, name, "image");
if (image->region == NULL) {
free(image);
return NULL;
}
return image;
}
void
intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
{
struct gl_framebuffer *fb = drawable->driverPrivate;
struct intel_renderbuffer *rb;
struct intel_region *region, *depth_region;
struct intel_context *intel = context->driverPrivate;
struct intel_renderbuffer *front_rb, *back_rb, *depth_rb, *stencil_rb;
__DRIbuffer *buffers = NULL;
__DRIscreen *screen;
int i, count;
unsigned int attachments[10];
const char *region_name;
/* If we're rendering to the fake front buffer, make sure all the
* pending drawing has landed on the real front buffer. Otherwise
* when we eventually get to DRI2GetBuffersWithFormat the stale
* real front buffer contents will get copied to the new fake front
* buffer.
*/
if (intel->is_front_buffer_rendering)
intel_flush(&intel->ctx, GL_FALSE);
/* Set this up front, so that in case our buffers get invalidated
* while we're getting new buffers, we don't clobber the stamp and
* thus ignore the invalidate. */
drawable->lastStamp = drawable->dri2.stamp;
if (INTEL_DEBUG & DEBUG_DRI)
fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
screen = intel->intelScreen->driScrnPriv;
if (screen->dri2.loader
&& (screen->dri2.loader->base.version > 2)
&& (screen->dri2.loader->getBuffersWithFormat != NULL)) {
front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
i = 0;
if ((intel->is_front_buffer_rendering ||
intel->is_front_buffer_reading ||
!back_rb) && front_rb) {
attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
attachments[i++] = intel_bits_per_pixel(front_rb);
}
if (back_rb) {
attachments[i++] = __DRI_BUFFER_BACK_LEFT;
attachments[i++] = intel_bits_per_pixel(back_rb);
}
if ((depth_rb != NULL) && (stencil_rb != NULL)) {
attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
attachments[i++] = intel_bits_per_pixel(depth_rb);
} else if (depth_rb != NULL) {
attachments[i++] = __DRI_BUFFER_DEPTH;
attachments[i++] = intel_bits_per_pixel(depth_rb);
} else if (stencil_rb != NULL) {
attachments[i++] = __DRI_BUFFER_STENCIL;
attachments[i++] = intel_bits_per_pixel(stencil_rb);
}
buffers =
(*screen->dri2.loader->getBuffersWithFormat)(drawable,
&drawable->w,
&drawable->h,
attachments, i / 2,
&count,
drawable->loaderPrivate);
} else if (screen->dri2.loader) {
i = 0;
if (intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT))
attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
if (intel_get_renderbuffer(fb, BUFFER_BACK_LEFT))
attachments[i++] = __DRI_BUFFER_BACK_LEFT;
if (intel_get_renderbuffer(fb, BUFFER_DEPTH))
attachments[i++] = __DRI_BUFFER_DEPTH;
if (intel_get_renderbuffer(fb, BUFFER_STENCIL))
attachments[i++] = __DRI_BUFFER_STENCIL;
buffers = (*screen->dri2.loader->getBuffers)(drawable,
&drawable->w,
&drawable->h,
attachments, i,
&count,
drawable->loaderPrivate);
}
if (buffers == NULL)
return;
drawable->x = 0;
drawable->y = 0;
drawable->backX = 0;
drawable->backY = 0;
drawable->numClipRects = 1;
drawable->pClipRects[0].x1 = 0;
drawable->pClipRects[0].y1 = 0;
drawable->pClipRects[0].x2 = drawable->w;
drawable->pClipRects[0].y2 = drawable->h;
drawable->numBackClipRects = 1;
drawable->pBackClipRects[0].x1 = 0;
drawable->pBackClipRects[0].y1 = 0;
drawable->pBackClipRects[0].x2 = drawable->w;
drawable->pBackClipRects[0].y2 = drawable->h;
depth_region = NULL;
for (i = 0; i < count; i++) {
switch (buffers[i].attachment) {
case __DRI_BUFFER_FRONT_LEFT:
rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
region_name = "dri2 front buffer";
break;
case __DRI_BUFFER_FAKE_FRONT_LEFT:
rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
region_name = "dri2 fake front buffer";
break;
case __DRI_BUFFER_BACK_LEFT:
rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
region_name = "dri2 back buffer";
break;
case __DRI_BUFFER_DEPTH:
rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
region_name = "dri2 depth buffer";
break;
case __DRI_BUFFER_DEPTH_STENCIL:
rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
region_name = "dri2 depth / stencil buffer";
break;
case __DRI_BUFFER_STENCIL:
rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
region_name = "dri2 stencil buffer";
break;
case __DRI_BUFFER_ACCUM:
default:
fprintf(stderr,
"unhandled buffer attach event, attacment type %d\n",
buffers[i].attachment);
return;
}
if (rb == NULL)
continue;
if (rb->region && rb->region->name == buffers[i].name)
continue;
if (INTEL_DEBUG & DEBUG_DRI)
fprintf(stderr,
"attaching buffer %d, at %d, cpp %d, pitch %d\n",
buffers[i].name, buffers[i].attachment,
buffers[i].cpp, buffers[i].pitch);
if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
if (INTEL_DEBUG & DEBUG_DRI)
fprintf(stderr, "(reusing depth buffer as stencil)\n");
intel_region_reference(®ion, depth_region);
}
else
region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
drawable->w,
drawable->h,
buffers[i].pitch / buffers[i].cpp,
buffers[i].name,
region_name);
if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
depth_region = region;
intel_renderbuffer_set_region(intel, rb, region);
intel_region_release(®ion);
if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
if (rb != NULL) {
struct intel_region *stencil_region = NULL;
if (rb->region && rb->region->name == buffers[i].name)
continue;
intel_region_reference(&stencil_region, region);
intel_renderbuffer_set_region(intel, rb, stencil_region);
intel_region_release(&stencil_region);
}
}
}
driUpdateFramebufferSize(&intel->ctx, drawable);
}
/**
* \brief Assign a DRI buffer's DRM region to a renderbuffer.
*
* This is called from intel_update_renderbuffers().
*
* \par Note:
* DRI buffers whose attachment point is DRI2BufferStencil or
* DRI2BufferDepthStencil are handled as special cases.
*
* \param buffer_name is a human readable name, such as "dri2 front buffer",
* that is passed to intel_region_alloc_for_handle().
*
* \see intel_update_renderbuffers()
* \see intel_region_alloc_for_handle()
*/
static void
intel_process_dri2_buffer(struct brw_context *brw,
__DRIdrawable *drawable,
__DRIbuffer *buffer,
struct intel_renderbuffer *rb,
const char *buffer_name)
{
struct intel_region *region = NULL;
struct gl_framebuffer *fb = drawable->driverPrivate;
if (!rb)
return;
unsigned num_samples = rb->Base.Base.NumSamples;
/* We try to avoid closing and reopening the same BO name, because the first
* use of a mapping of the buffer involves a bunch of page faulting which is
* moderately expensive.
*/
if (num_samples == 0) {
if (rb->mt &&
rb->mt->region &&
rb->mt->region->name == buffer->name)
return;
} else {
if (rb->singlesample_mt &&
rb->singlesample_mt->region &&
rb->singlesample_mt->region->name == buffer->name)
return;
}
if (unlikely(INTEL_DEBUG & DEBUG_DRI)) {
fprintf(stderr,
"attaching buffer %d, at %d, cpp %d, pitch %d\n",
buffer->name, buffer->attachment,
buffer->cpp, buffer->pitch);
}
intel_miptree_release(&rb->mt);
region = intel_region_alloc_for_handle(brw->intelScreen,
buffer->cpp,
drawable->w,
drawable->h,
buffer->pitch,
buffer->name,
buffer_name);
if (!region) {
fprintf(stderr,
"Failed to make region for returned DRI2 buffer "
"(%dx%d, named %d).\n"
"This is likely a bug in the X Server that will lead to a "
"crash soon.\n",
drawable->w, drawable->h, buffer->name);
return;
}
intel_update_winsys_renderbuffer_miptree(brw, rb, region);
if (brw_is_front_buffer_drawing(fb) &&
(buffer->attachment == __DRI_BUFFER_FRONT_LEFT ||
buffer->attachment == __DRI_BUFFER_FAKE_FRONT_LEFT) &&
rb->Base.Base.NumSamples > 1) {
intel_renderbuffer_upsample(brw, rb);
}
assert(rb->mt);
intel_region_release(®ion);
}
