/**
* Clear the rasterizer's current color tile.
* This is a bin command called during bin processing.
* Clear commands always clear all bound layers.
*/
static void
lp_rast_clear_color(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
const struct lp_scene *scene = task->scene;
unsigned cbuf = arg.clear_rb->cbuf;
union util_color uc;
enum pipe_format format;
/* we never bin clear commands for non-existing buffers */
assert(cbuf < scene->fb.nr_cbufs);
assert(scene->fb.cbufs[cbuf]);
format = scene->fb.cbufs[cbuf]->format;
uc = arg.clear_rb->color_val;
/*
* this is pretty rough since we have target format (bunch of bytes...) here.
* dump it as raw 4 dwords.
*/
LP_DBG(DEBUG_RAST, "%s clear value (target format %d) raw 0x%x,0x%x,0x%x,0x%x\n",
__FUNCTION__, format, uc.ui[0], uc.ui[1], uc.ui[2], uc.ui[3]);
util_fill_box(scene->cbufs[cbuf].map,
format,
scene->cbufs[cbuf].stride,
scene->cbufs[cbuf].layer_stride,
task->x,
task->y,
0,
task->width,
task->height,
scene->fb_max_layer + 1,
&uc);
/* this will increase for each rb which probably doesn't mean much */
LP_COUNT(nr_color_tile_clear);
}
/**
* Fallback for pipe->clear_render_target() function.
* XXX this looks too hackish to be really useful.
* cpp > 4 looks like a gross hack at best...
* Plus can't use these transfer fallbacks when clearing
* multisampled surfaces for instance.
* Clears all bound layers.
*/
void
util_clear_render_target(struct pipe_context *pipe,
struct pipe_surface *dst,
const union pipe_color_union *color,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height)
{
struct pipe_transfer *dst_trans;
ubyte *dst_map;
union util_color uc;
unsigned max_layer;
assert(dst->texture);
if (!dst->texture)
return;
if (dst->texture->target == PIPE_BUFFER) {
/*
* The fill naturally works on the surface format, however
* the transfer uses resource format which is just bytes for buffers.
*/
unsigned dx, w;
unsigned pixstride = util_format_get_blocksize(dst->format);
dx = (dst->u.buf.first_element + dstx) * pixstride;
w = width * pixstride;
max_layer = 0;
dst_map = pipe_transfer_map(pipe,
dst->texture,
0, 0,
PIPE_TRANSFER_WRITE,
dx, 0, w, 1,
&dst_trans);
}
else {
max_layer = dst->u.tex.last_layer - dst->u.tex.first_layer;
dst_map = pipe_transfer_map_3d(pipe,
dst->texture,
dst->u.tex.level,
PIPE_TRANSFER_WRITE,
dstx, dsty, dst->u.tex.first_layer,
width, height, max_layer + 1, &dst_trans);
}
assert(dst_map);
if (dst_map) {
enum pipe_format format = dst->format;
assert(dst_trans->stride > 0);
if (util_format_is_pure_integer(format)) {
/*
* We expect int/uint clear values here, though some APIs
* might disagree (but in any case util_pack_color()
* couldn't handle it)...
*/
if (util_format_is_pure_sint(format)) {
util_format_write_4i(format, color->i, 0, &uc, 0, 0, 0, 1, 1);
}
else {
assert(util_format_is_pure_uint(format));
util_format_write_4ui(format, color->ui, 0, &uc, 0, 0, 0, 1, 1);
}
}
else {
util_pack_color(color->f, format, &uc);
}
util_fill_box(dst_map, dst->format,
dst_trans->stride, dst_trans->layer_stride,
0, 0, 0, width, height, max_layer + 1, &uc);
pipe->transfer_unmap(pipe, dst_trans);
}
}