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462972f7ea
This is used by several games to render to the alpha channel of RGBA4444 images, which cannot normally be done directly on the PSP. Can be used as a far more efficient replacement for ReinterpretFramebuffers/ShaderColorBitmask
104 lines
3.5 KiB
C++
104 lines
3.5 KiB
C++
// Copyright (c) 2015- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#include <string>
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#include <cstdint>
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// Compatibility flags are controlled by assets/compat.ini.
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// Alternatively, if PSP/SYSTEM/compat.ini exists, it is merged on top, to enable editing
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// the file on Android for tests.
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//
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// This file is not meant to be user-editable, although is kept as a separate ini
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// file instead of compiled into the code for debugging purposes.
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//
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// The uses cases are strict:
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// * Enable fixes for things we can't reasonably emulate without completely ruining
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// performance for other games, such as the screen copies in Dangan Ronpa
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// * Disabling accuracy features like 16-bit depth rounding, when we can't seem to
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// implement them at all in a 100% compatible way
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// * Emergency game-specific compatibility fixes before releases, such as the GTA
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// music problem where every attempted fix has reduced compatibility with other games
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// * Enable "unsafe" performance optimizations that some games can tolerate and
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// others cannot. We do not currently have any of those.
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//
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// This functionality should NOT be used for any of the following:
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// * Cheats
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// * Fun hacks, like enlarged heads or whatever
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// * Fixing general compatibility issues. First try to find a general solution. Try hard.
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//
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// We already have the Action Replay-based cheat system for such use cases.
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// TODO: Turn into bitfield for smaller mem footprint. Though I think it still fits in a cacheline...
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struct CompatFlags {
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bool VertexDepthRounding;
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bool PixelDepthRounding;
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bool DepthRangeHack;
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bool ClearToRAM;
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bool Force04154000Download;
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bool DrawSyncEatCycles;
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bool FakeMipmapChange;
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bool RequireBufferedRendering;
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bool RequireBlockTransfer;
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bool RequireDefaultCPUClock;
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bool DisableReadbacks;
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bool DisableAccurateDepth;
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bool MGS2AcidHack;
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bool SonicRivalsHack;
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bool BlockTransferAllowCreateFB;
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bool IntraVRAMBlockTransferAllowCreateFB;
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bool YugiohSaveFix;
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bool ForceUMDDelay;
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bool ForceMax60FPS;
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bool JitInvalidationHack;
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bool HideISOFiles;
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bool MoreAccurateVMMUL;
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bool ForceSoftwareRenderer;
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bool DarkStalkersPresentHack;
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bool ReportSmallMemstick;
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bool MemstickFixedFree;
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bool DateLimited;
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bool ReinterpretFramebuffers;
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bool ShaderColorBitmask;
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bool DisableFirstFrameReadback;
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bool DisableRangeCulling;
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bool MpegAvcWarmUp;
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bool BlueToAlpha;
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};
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class IniFile;
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class Compatibility {
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public:
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Compatibility() {
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Clear();
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}
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// Flags enforced read-only through const. Only way to change them is to load assets/compat.ini.
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const CompatFlags &flags() const { return flags_; }
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void Load(const std::string &gameID);
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private:
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void Clear();
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void CheckSettings(IniFile &iniFile, const std::string &gameID);
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void CheckSetting(IniFile &iniFile, const std::string &gameID, const char *option, bool *flag);
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CompatFlags flags_{};
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};
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