static void
intel_update_image_buffer(struct brw_context *intel,
__DRIdrawable *drawable,
struct intel_renderbuffer *rb,
__DRIimage *buffer,
enum __DRIimageBufferMask buffer_type)
{
struct intel_region *region = buffer->region;
struct gl_framebuffer *fb = drawable->driverPrivate;
if (!rb || !region)
return;
unsigned num_samples = rb->Base.Base.NumSamples;
/* Check and see if we're already bound to the right
* buffer object
*/
if (num_samples == 0) {
if (rb->mt &&
rb->mt->region &&
rb->mt->region->bo == region->bo)
return;
} else {
if (rb->singlesample_mt &&
rb->singlesample_mt->region &&
rb->singlesample_mt->region->bo == region->bo)
return;
}
intel_update_winsys_renderbuffer_miptree(intel, rb, region);
if (brw_is_front_buffer_drawing(fb) &&
buffer_type == __DRI_IMAGE_BUFFER_FRONT &&
rb->Base.Base.NumSamples > 1) {
intel_renderbuffer_upsample(intel, rb);
}
}
static void
intel_update_image_buffer(struct brw_context *intel,
__DRIdrawable *drawable,
struct intel_renderbuffer *rb,
__DRIimage *buffer,
enum __DRIimageBufferMask buffer_type)
{
struct gl_framebuffer *fb = drawable->driverPrivate;
if (!rb || !buffer->bo)
return;
unsigned num_samples = rb->Base.Base.NumSamples;
/* Check and see if we're already bound to the right
* buffer object
*/
struct intel_mipmap_tree *last_mt;
if (num_samples == 0)
last_mt = rb->mt;
else
last_mt = rb->singlesample_mt;
if (last_mt && last_mt->bo == buffer->bo)
return;
intel_update_winsys_renderbuffer_miptree(intel, rb, buffer->bo,
buffer->width, buffer->height,
buffer->pitch);
if (brw_is_front_buffer_drawing(fb) &&
buffer_type == __DRI_IMAGE_BUFFER_FRONT &&
rb->Base.Base.NumSamples > 1) {
intel_renderbuffer_upsample(intel, rb);
}
}
/**
* \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 drm_intel_bo_gem_create_from_name().
*
* \see intel_update_renderbuffers()
*/
static void
intel_process_dri2_buffer(struct brw_context *brw,
__DRIdrawable *drawable,
__DRIbuffer *buffer,
struct intel_renderbuffer *rb,
const char *buffer_name)
{
struct gl_framebuffer *fb = drawable->driverPrivate;
drm_intel_bo *bo;
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.
*/
struct intel_mipmap_tree *last_mt;
if (num_samples == 0)
last_mt = rb->mt;
else
last_mt = rb->singlesample_mt;
uint32_t old_name = 0;
if (last_mt) {
/* The bo already has a name because the miptree was created by a
* previous call to intel_process_dri2_buffer(). If a bo already has a
* name, then drm_intel_bo_flink() is a low-cost getter. It does not
* create a new name.
*/
drm_intel_bo_flink(last_mt->bo, &old_name);
}
if (old_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);
bo = drm_intel_bo_gem_create_from_name(brw->bufmgr, buffer_name,
buffer->name);
if (!bo) {
fprintf(stderr,
"Failed to open BO for returned DRI2 buffer "
"(%dx%d, %s, 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, buffer->name);
return;
}
intel_update_winsys_renderbuffer_miptree(brw, rb, bo,
drawable->w, drawable->h,
buffer->pitch);
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);
drm_intel_bo_unreference(bo);
}
/**
* \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);
}
