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57 lines
2.6 KiB
C++
57 lines
2.6 KiB
C++
#pragma once
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#include "d3d8_include.h"
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#include "../d3d9/d3d9_bridge.h"
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#include "../util/config/config.h"
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namespace dxvk {
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struct D3D8Options {
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/// Some games rely on undefined behavior by using undeclared vertex shader inputs.
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/// The simplest way to fix them is to simply modify their vertex shader decl.
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///
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/// This option takes a comma-separated list of colon-separated number pairs, where
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/// the first number is a D3DVSDE_REGISTER value, the second is a D3DVSDT_TYPE value.
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/// e.g. "0:2,3:2,7:1" for float3 position : v0, float3 normal : v3, float2 uv : v7
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std::vector<std::pair<D3DVSDE_REGISTER, D3DVSDT_TYPE>> forceVsDecl;
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/// Specialized drawcall batcher, typically for games that draw a lot of similar
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/// geometry in separate drawcalls (sometimes even one triangle at a time).
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///
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/// May hurt performance outside of specifc games that benefit from it.
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bool batching = false;
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/// The Lord of the Rings: The Fellowship of the Ring tries to create a P8 texture
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/// in D3DPOOL_MANAGED on Nvidia and Intel, which fails, but has a separate code
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/// path for ATI/AMD that creates it in D3DPOOL_SCRATCH instead, which works.
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///
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/// The internal logic determining this path doesn't seem to be d3d-related, but
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/// the game works universally if we mimic its own ATI/AMD workaround during P8
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/// texture creation.
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///
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/// Early Nvidia GPUs, such as the GeForce 4 generation cards, included and exposed
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/// P8 texture support. However, it was no longer advertised with cards in the FX series
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/// and above. Most likely ATI/AMD drivers never supported P8 in the first place.
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bool placeP8InScratch = false;
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/// Rayman 3 relies on D3DLOCK_DISCARD being ignored for everything except D3DUSAGE_DYNAMIC +
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/// D3DUSAGE_WRITEONLY buffers, however this approach incurs a performance penalty.
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///
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/// Some titles might abuse this early D3D8 quirk, however at some point in its history
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/// it was brought in line with standard D3D9 behavior.
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bool forceLegacyDiscard = false;
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D3D8Options() {}
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D3D8Options(const Config& config) {
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auto forceVsDeclStr = config.getOption<std::string>("d3d8.forceVsDecl", "");
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batching = config.getOption<bool> ("d3d8.batching", batching);
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placeP8InScratch = config.getOption<bool> ("d3d8.placeP8InScratch", placeP8InScratch);
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forceLegacyDiscard = config.getOption<bool> ("d3d8.forceLegacyDiscard", forceLegacyDiscard);
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parseVsDecl(forceVsDeclStr);
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}
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void parseVsDecl(const std::string& decl);
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};
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}
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