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Reimplement overlapping fbo "hack"

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To avoid the need (and performance hit) of Read Color/Depth Buffers, we
may not invalidate overlapping fbos inside lock_memory_region unless
they are guaranteed to be superseded by the new one.

This avoids e.g. issues with overblooming, among others.
This commit is contained in:
Rui Pinheiro 2018-12-09 23:22:02 +00:00 • committed by kd-11
parent 5ab7296665
commit 18b9ee4541
1 changed files with 22 additions and 12 deletions
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34
rpcs3/Emu/RSX/Common/texture_cache.h
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@ -272,7 +272,7 @@ namespace rsx
std::atomic<u32> m_misses_this_frame = { 0 };
std::atomic<u32> m_speculations_this_frame = { 0 };
std::atomic<u32> m_unavoidable_hard_faults_this_frame = { 0 };
static const u32 m_predict_max_flushes_per_frame = 100; // Above this number the predictions are disabled
static const u32 m_predict_max_flushes_per_frame = 50; // Above this number the predictions are disabled
// Invalidation
static const bool invalidation_ignore_unsynchronized = true; // If true, unsynchronized sections don't get forcefully flushed unless they overlap the fault range
@ -502,7 +502,7 @@ namespace rsx
// Sanity checks
AUDIT(exclusion_range.is_page_range());
AUDIT(data.cause.is_read() && !excluded->is_flushable() || !exclusion_range.overlaps(data.fault_range));
AUDIT(data.cause.is_read() && !excluded->is_flushable() || data.cause == invalidation_cause::superseded_by_fbo || !exclusion_range.overlaps(data.fault_range));
// Apply exclusion
ranges_to_unprotect.exclude(exclusion_range);
@ -691,14 +691,21 @@ namespace rsx
for (auto &obj : trampled_set.sections)
{
auto &tex = *obj;
if (tex.inside(fault_range, section_bounds::locked_range))
if (tex.overlaps(fault_range, section_bounds::locked_range))
{
// Discard - this section won't be needed any more
tex.discard(/* set_dirty */ true);
}
else if (tex.overlaps(fault_range, section_bounds::locked_range))
{
if (g_cfg.video.strict_texture_flushing && tex.is_flushable())
if (cause == invalidation_cause::superseded_by_fbo &&
tex.get_context() == texture_upload_context::framebuffer_storage &&
tex.get_section_base() != fault_range_in.start)
{
// HACK: When being superseded by an fbo, we preserve other overlapped fbos unless the start addresses match
continue;
}
else if (tex.inside(fault_range, section_bounds::locked_range))
{
// Discard - this section won't be needed any more
tex.discard(/* set_dirty */ true);
}
else if (g_cfg.video.strict_texture_flushing && tex.is_flushable())
{
tex.add_flush_exclusion(fault_range);
}
@ -742,6 +749,7 @@ namespace rsx
continue;
const rsx::section_bounds bounds = tex.get_overlap_test_bounds();
const bool overlaps_fault_range = tex.overlaps(fault_range, bounds);
if (
// RO sections during a read invalidation can be ignored (unless there are flushables in trampled_set, since those could overwrite RO data)
@ -749,7 +757,9 @@ namespace rsx
// Sections that are not fully contained in invalidate_range can be ignored
!tex.inside(trampled_set.invalidate_range, bounds) ||
// Unsynchronized sections (or any flushable when skipping flushes) that do not overlap the fault range directly can also be ignored
(invalidation_ignore_unsynchronized && tex.is_flushable() && (cause.skip_flush() || !tex.is_synchronized()) && !tex.overlaps(fault_range, bounds))
(invalidation_ignore_unsynchronized && tex.is_flushable() && (cause.skip_flush() || !tex.is_synchronized()) && !overlaps_fault_range) ||
// HACK: When being superseded by an fbo, we preserve other overlapped fbos unless the start addresses match
(overlaps_fault_range && cause == invalidation_cause::superseded_by_fbo && tex.get_context() == texture_upload_context::framebuffer_storage && tex.get_section_base() != fault_range_in.start)
)
{
// False positive
@ -830,8 +840,8 @@ namespace rsx
}
else
{
// This is a read and all overlapping sections were RO and were excluded
AUDIT(cause.is_read() && !result.sections_to_exclude.empty());
// This is a read and all overlapping sections were RO and were excluded (except for cause == superseded_by_fbo)
AUDIT(cause == invalidation_cause::superseded_by_fbo || cause.is_read() && !result.sections_to_exclude.empty());
// We did not handle this violation
result.clear_sections();