/*
* Mesa 3-D graphics library
*
* Copyright (C) 2012-2013 LunarG, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Chia-I Wu <olv@lunarg.com>
*/
#include "util/u_surface.h"
#include "ilo_blitter.h"
#include "ilo_context.h"
#include "ilo_blit.h"
static void
ilo_resource_copy_region(struct pipe_context *pipe,
struct pipe_resource *dst,
unsigned dst_level,
unsigned dstx, unsigned dsty, unsigned dstz,
struct pipe_resource *src,
unsigned src_level,
const struct pipe_box *src_box)
{
struct ilo_context *ilo = ilo_context(pipe);
if (ilo_blitter_blt_copy_resource(ilo->blitter,
dst, dst_level, dstx, dsty, dstz,
src, src_level, src_box))
return;
if (ilo_blitter_pipe_copy_resource(ilo->blitter,
dst, dst_level, dstx, dsty, dstz,
src, src_level, src_box))
return;
util_resource_copy_region(&ilo->base, dst, dst_level,
dstx, dsty, dstz, src, src_level, src_box);
}
static void
ilo_clear(struct pipe_context *pipe,
unsigned buffers,
const union pipe_color_union *color,
double depth,
unsigned stencil)
{
struct ilo_context *ilo = ilo_context(pipe);
struct ilo_state_vector *vec = &ilo->state_vector;
if ((buffers & PIPE_CLEAR_DEPTHSTENCIL) && vec->fb.state.zsbuf) {
if (ilo_blitter_rectlist_clear_zs(ilo->blitter, vec->fb.state.zsbuf,
buffers & PIPE_CLEAR_DEPTHSTENCIL, depth, stencil))
buffers &= ~PIPE_CLEAR_DEPTHSTENCIL;
if (!buffers)
return;
}
ilo_blitter_pipe_clear_fb(ilo->blitter, buffers, color, depth, stencil);
}
static void
ilo_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 ilo_context *ilo = ilo_context(pipe);
if (!width || !height || dstx >= dst->width || dsty >= dst->height)
return;
if (dstx + width > dst->width)
width = dst->width - dstx;
if (dsty + height > dst->height)
height = dst->height - dsty;
if (ilo_blitter_blt_clear_rt(ilo->blitter,
dst, color, dstx, dsty, width, height))
return;
ilo_blitter_pipe_clear_rt(ilo->blitter,
dst, color, dstx, dsty, width, height);
}
static void
ilo_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 ilo_context *ilo = ilo_context(pipe);
if (!width || !height || dstx >= dst->width || dsty >= dst->height)
return;
if (dstx + width > dst->width)
width = dst->width - dstx;
if (dsty + height > dst->height)
height = dst->height - dsty;
if (ilo_blitter_blt_clear_zs(ilo->blitter,
dst, clear_flags, depth, stencil, dstx, dsty, width, height))
return;
ilo_blitter_pipe_clear_zs(ilo->blitter,
dst, clear_flags, depth, stencil, dstx, dsty, width, height);
}
static void
ilo_blit(struct pipe_context *pipe, const struct pipe_blit_info *info)
{
struct ilo_context *ilo = ilo_context(pipe);
ilo_blitter_pipe_blit(ilo->blitter, info);
}
static void
ilo_flush_resource(struct pipe_context *pipe, struct pipe_resource *res)
{
struct ilo_context *ilo = ilo_context(pipe);
const unsigned flags = ILO_TEXTURE_CPU_READ |
ILO_TEXTURE_BLT_READ |
ILO_TEXTURE_RENDER_READ;
ilo_blit_resolve_resource(ilo, res, flags);
}
void
ilo_blit_resolve_slices_for_hiz(struct ilo_context *ilo,
struct pipe_resource *res, unsigned level,
unsigned first_slice, unsigned num_slices,
unsigned resolve_flags)
{
struct ilo_texture *tex = ilo_texture(res);
const unsigned any_reader =
ILO_TEXTURE_RENDER_READ |
ILO_TEXTURE_BLT_READ |
ILO_TEXTURE_CPU_READ;
const unsigned other_writers =
ILO_TEXTURE_BLT_WRITE |
ILO_TEXTURE_CPU_WRITE;
unsigned i;
assert(tex->base.target != PIPE_BUFFER &&
ilo_texture_can_enable_hiz(tex, level, first_slice, num_slices));
if (resolve_flags & ILO_TEXTURE_RENDER_WRITE) {
/*
* When ILO_TEXTURE_RENDER_WRITE is set, there can be no reader. We
* need to perform a HiZ Buffer Resolve in case the resource was
* previously written by another writer, unless this is a clear.
*
* When slices have different clear values, we perform a Depth Buffer
* Resolve on all slices not sharing the clear value of the first slice.
* After resolving, those slices do not use 3DSTATE_CLEAR_PARAMS and can
* be made to have the same clear value as the first slice does. This
* way,
*
* - 3DSTATE_CLEAR_PARAMS can be set to the clear value of any slice
* - we will not resolve unnecessarily next time this function is
* called
*
* Since slice clear value is the value the slice is cleared to when
* ILO_TEXTURE_CLEAR is set, the bit needs to be unset.
*/
assert(!(resolve_flags & (other_writers | any_reader)));
if (!(resolve_flags & ILO_TEXTURE_CLEAR)) {
const uint32_t first_clear_value = ilo_texture_get_slice(tex,
level, first_slice)->clear_value;
bool set_clear_value = false;
for (i = 0; i < num_slices; i++) {
const struct ilo_texture_slice *slice =
ilo_texture_get_slice(tex, level, first_slice + i);
if (slice->flags & other_writers) {
ilo_blitter_rectlist_resolve_hiz(ilo->blitter,
res, level, first_slice + i);
} else if (slice->clear_value != first_clear_value &&
(slice->flags & ILO_TEXTURE_RENDER_WRITE)) {
ilo_blitter_rectlist_resolve_z(ilo->blitter,
res, level, first_slice + i);
set_clear_value = true;
}
}
if (set_clear_value) {
/* ILO_TEXTURE_CLEAR will be cleared later */
ilo_texture_set_slice_clear_value(tex, level,
first_slice, num_slices, first_clear_value);
}
}
}
else if ((resolve_flags & any_reader) ||
((resolve_flags & other_writers) &&
!(resolve_flags & ILO_TEXTURE_CLEAR))) {
/*
* When there is at least a reader or writer, we need to perform a
* Depth Buffer Resolve in case the resource was previously written
* by ILO_TEXTURE_RENDER_WRITE.
*/
for (i = 0; i < num_slices; i++) {
const struct ilo_texture_slice *slice =
ilo_texture_get_slice(tex, level, first_slice + i);
if (slice->flags & ILO_TEXTURE_RENDER_WRITE) {
ilo_blitter_rectlist_resolve_z(ilo->blitter,
&tex->base, level, first_slice + i);
}
}
}
}
/**
* Initialize blit-related functions.
*/
void
ilo_init_blit_functions(struct ilo_context *ilo)
{
ilo->base.resource_copy_region = ilo_resource_copy_region;
ilo->base.blit = ilo_blit;
ilo->base.flush_resource = ilo_flush_resource;
ilo->base.clear = ilo_clear;
ilo->base.clear_render_target = ilo_clear_render_target;
ilo->base.clear_depth_stencil = ilo_clear_depth_stencil;
}