/**
* Clear the given buffers to the specified values.
* No masking, no scissor (clear entire buffer).
*/
void
softpipe_clear(struct pipe_context *pipe, unsigned buffers,
const union pipe_color_union *color,
double depth, unsigned stencil)
{
struct softpipe_context *softpipe = softpipe_context(pipe);
uint64_t cv;
uint i;
if (softpipe->no_rast)
return;
if (!softpipe_check_render_cond(softpipe))
return;
#if 0
softpipe_update_derived(softpipe, PIPE_PRIM_TRIANGLES); /* not needed?? */
#endif
if (buffers & PIPE_CLEAR_COLOR) {
for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
sp_tile_cache_clear(softpipe->cbuf_cache[i], color, 0);
}
}
if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {
static const union pipe_color_union zero;
struct pipe_surface *ps = softpipe->framebuffer.zsbuf;
cv = util_pack64_z_stencil(ps->format, depth, stencil);
sp_tile_cache_clear(softpipe->zsbuf_cache, &zero, cv);
}
softpipe->dirty_render_cache = TRUE;
}
static boolean
lp_setup_try_clear_zs(struct lp_setup_context *setup,
double depth,
unsigned stencil,
unsigned flags)
{
uint64_t zsmask = 0;
uint64_t zsvalue = 0;
uint32_t zmask32;
uint8_t smask8;
LP_DBG(DEBUG_SETUP, "%s state %d\n", __FUNCTION__, setup->state);
zmask32 = (flags & PIPE_CLEAR_DEPTH) ? ~0 : 0;
smask8 = (flags & PIPE_CLEAR_STENCIL) ? ~0 : 0;
zsvalue = util_pack64_z_stencil(setup->fb.zsbuf->format,
depth,
stencil);
zsmask = util_pack64_mask_z_stencil(setup->fb.zsbuf->format,
zmask32,
smask8);
zsvalue &= zsmask;
if (setup->state == SETUP_ACTIVE) {
struct lp_scene *scene = setup->scene;
/* Add the clear to existing scene. In the unusual case where
* both color and depth-stencil are being cleared when there's
* already been some rendering, we could discard the currently
* binned scene and start again, but I don't see that as being
* a common usage.
*/
if (!lp_scene_bin_everywhere(scene,
LP_RAST_OP_CLEAR_ZSTENCIL,
lp_rast_arg_clearzs(zsvalue, zsmask)))
return FALSE;
}
else {
/* Put ourselves into the 'pre-clear' state, specifically to try
* and accumulate multiple clears to color and depth_stencil
* buffers which the app or state-tracker might issue
* separately.
*/
set_scene_state( setup, SETUP_CLEARED, __FUNCTION__ );
setup->clear.flags |= flags;
setup->clear.zsmask |= zsmask;
setup->clear.zsvalue =
(setup->clear.zsvalue & ~zsmask) | (zsvalue & zsmask);
}
return TRUE;
}
/**
* Clear the given buffers to the specified values.
* No masking, no scissor (clear entire buffer).
*/
void
softpipe_clear(struct pipe_context *pipe, unsigned buffers,
const union pipe_color_union *color,
double depth, unsigned stencil)
{
struct softpipe_context *softpipe = softpipe_context(pipe);
struct pipe_surface *zsbuf = softpipe->framebuffer.zsbuf;
unsigned zs_buffers = buffers & PIPE_CLEAR_DEPTHSTENCIL;
uint64_t cv;
uint i;
if (softpipe->no_rast)
return;
if (!softpipe_check_render_cond(softpipe))
return;
#if 0
softpipe_update_derived(softpipe, PIPE_PRIM_TRIANGLES); /* not needed?? */
#endif
if (buffers & PIPE_CLEAR_COLOR) {
for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
sp_tile_cache_clear(softpipe->cbuf_cache[i], color, 0);
}
}
if (zs_buffers &&
util_format_is_depth_and_stencil(zsbuf->texture->format) &&
zs_buffers != PIPE_CLEAR_DEPTHSTENCIL) {
/* Clearing only depth or stencil in a combined depth-stencil buffer. */
util_clear_depth_stencil(pipe, zsbuf, zs_buffers, depth, stencil,
0, 0, zsbuf->width, zsbuf->height);
}
else if (zs_buffers) {
static const union pipe_color_union zero;
cv = util_pack64_z_stencil(zsbuf->format, depth, stencil);
sp_tile_cache_clear(softpipe->zsbuf_cache, &zero, cv);
}
softpipe->dirty_render_cache = TRUE;
}
/**
* Fallback for pipe->clear_stencil() function.
* sw fallback doesn't look terribly useful here.
* Plus can't use these transfer fallbacks when clearing
* multisampled surfaces for instance.
*/
void
util_clear_depth_stencil(struct pipe_context *pipe,
struct pipe_surface *dst,
unsigned clear_flags,
double depth,
unsigned stencil,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height)
{
struct pipe_transfer *dst_trans;
ubyte *dst_map;
boolean need_rmw = FALSE;
if ((clear_flags & PIPE_CLEAR_DEPTHSTENCIL) &&
((clear_flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
util_format_is_depth_and_stencil(dst->format))
need_rmw = TRUE;
assert(dst->texture);
if (!dst->texture)
return;
dst_map = pipe_transfer_map(pipe,
dst->texture,
dst->u.tex.level,
dst->u.tex.first_layer,
(need_rmw ? PIPE_TRANSFER_READ_WRITE :
PIPE_TRANSFER_WRITE),
dstx, dsty, width, height, &dst_trans);
assert(dst_map);
if (dst_map) {
unsigned dst_stride = dst_trans->stride;
uint64_t zstencil = util_pack64_z_stencil(dst->texture->format,
depth, stencil);
unsigned i, j;
assert(dst_trans->stride > 0);
switch (util_format_get_blocksize(dst->format)) {
case 1:
assert(dst->format == PIPE_FORMAT_S8_UINT);
if(dst_stride == width)
memset(dst_map, (uint8_t) zstencil, height * width);
else {
for (i = 0; i < height; i++) {
memset(dst_map, (uint8_t) zstencil, width);
dst_map += dst_stride;
}
}
break;
case 2:
assert(dst->format == PIPE_FORMAT_Z16_UNORM);
for (i = 0; i < height; i++) {
uint16_t *row = (uint16_t *)dst_map;
for (j = 0; j < width; j++)
*row++ = (uint16_t) zstencil;
dst_map += dst_stride;
}
break;
case 4:
if (!need_rmw) {
for (i = 0; i < height; i++) {
uint32_t *row = (uint32_t *)dst_map;
for (j = 0; j < width; j++)
*row++ = (uint32_t) zstencil;
dst_map += dst_stride;
}
}
else {
uint32_t dst_mask;
if (dst->format == PIPE_FORMAT_Z24_UNORM_S8_UINT)
dst_mask = 0xffffff00;
else {
assert(dst->format == PIPE_FORMAT_S8_UINT_Z24_UNORM);
dst_mask = 0xffffff;
}
if (clear_flags & PIPE_CLEAR_DEPTH)
dst_mask = ~dst_mask;
for (i = 0; i < height; i++) {
uint32_t *row = (uint32_t *)dst_map;
for (j = 0; j < width; j++) {
uint32_t tmp = *row & dst_mask;
*row++ = tmp | ((uint32_t) zstencil & ~dst_mask);
}
dst_map += dst_stride;
}
}
break;
case 8:
if (!need_rmw) {
for (i = 0; i < height; i++) {
uint64_t *row = (uint64_t *)dst_map;
for (j = 0; j < width; j++)
*row++ = zstencil;
dst_map += dst_stride;
}
}
else {
uint64_t src_mask;
if (clear_flags & PIPE_CLEAR_DEPTH)
src_mask = 0x00000000ffffffffull;
else
src_mask = 0x000000ff00000000ull;
for (i = 0; i < height; i++) {
uint64_t *row = (uint64_t *)dst_map;
for (j = 0; j < width; j++) {
uint64_t tmp = *row & ~src_mask;
*row++ = tmp | (zstencil & src_mask);
}
dst_map += dst_stride;
}
}
break;
default:
assert(0);
break;
}
pipe->transfer_unmap(pipe, dst_trans);
}
}
