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rsx: Implement cross-aspect slice gathering

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- Fixes a data leak that can happen when a surface is rejected due to aspect mismatch.
- Mismatch can lead to rejection due to area covered excluding the RTT and inevitable upload a texture from CPU at the same location.
- Overlapping fbo/shader_read resources are not allowed.
This commit is contained in:
kd-11 2020-03-14 22:42:24 +03:00 committed by kd-11
parent 377e06a4a2
commit a756c0679e
1 changed files with 38 additions and 16 deletions
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54
rpcs3/Emu/RSX/Common/texture_cache_helpers.h
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@ -276,12 +276,6 @@ namespace rsx
auto add_rtt_resource = [&](auto& section, u16 slice)
{
if (section.is_depth != is_depth)
{
// TODO
return;
}
const u32 slice_begin = (slice * attr.slice_h);
const u32 slice_end = (slice_begin + attr.height);
@ -332,12 +326,6 @@ namespace rsx
auto add_local_resource = [&](auto& section, u32 address, u16 slice, bool scaling = true)
{
if (section->is_depth_texture() != is_depth)
{
// TODO
return;
}
// Intersect this resource with the original one
const auto section_bpp = get_format_block_size_in_bytes(section->get_gcm_format());
const auto normalized_width = (section->get_width() * section_bpp) / attr.bpp;
@ -600,20 +588,54 @@ namespace rsx
{
verify(HERE), (select_hint & 0x1) == select_hint;
bool is_depth;
bool is_depth = (select_hint == 0) ? fbos.back().is_depth : local.back()->is_depth_texture();
bool aspect_mismatch = false;
auto attr2 = attr;
if (is_depth = (select_hint == 0) ? fbos.back().is_depth : local.back()->is_depth_texture();
is_depth)
// Check for mixed sources with aspect mismatch
// NOTE: If the last texture is a perfect match, this method would not have been called which means at least one transfer has to occur
if ((fbos.size() + local.size()) > 1) [[unlikely]]
{
for (const auto& tex : local)
{
if (tex->is_depth_texture() != is_depth)
{
aspect_mismatch = true;
break;
}
}
if (!aspect_mismatch) [[likely]]
{
for (const auto& surface : fbos)
{
if (surface.is_depth != is_depth)
{
aspect_mismatch = true;
break;
}
}
}
}
if (aspect_mismatch)
{
// Override with the requested format
is_depth = is_gcm_depth_format(attr.gcm_format);
}
else if (is_depth)
{
// Depth format textures were found. Check if the data can be bitcast without conversion.
if (const auto suggested_format = get_compatible_depth_format(attr.gcm_format);
!is_gcm_depth_format(suggested_format))
{
// Failed!
// Requested format cannot be directly read from a depth texture.
// Typeless conversion will be performed to make data accessible.
is_depth = false;
}
else
{
// Replace request format with one that is compatible with existing data.
attr2.gcm_format = suggested_format;
}
}