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Add reduceHash option, to hash 50% of texture when it's otherwise unreliable.

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This commit is contained in:
LunaMoo 2017-05-07 06:03:21 +02:00
parent 36d7933c24
commit 0e44c3b9fe
2 changed files with 11 additions and 2 deletions
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12
Core/TextureReplacer.cpp
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@ -93,6 +93,11 @@ bool TextureReplacer::LoadIni() {
options->Get("video", &allowVideo_, false);
options->Get("ignoreAddress", &ignoreAddress_, false);
options->Get("reduceHash", &reduceHash_, false); // Multiplies sizeInRAM/bytesPerLine in XXHASH by 0.5
if (reduceHash_ && hash_ == ReplacedTextureHash::QUICK) {
reduceHash_ = false;
ERROR_LOG(G3D, "Texture Replacement: reduceHash option requires safer hash, use xxh32 or xxh64 instead.");
}
if (ignoreAddress_ && hash_ == ReplacedTextureHash::QUICK) {
ignoreAddress_ = false;
@ -181,10 +186,13 @@ u32 TextureReplacer::ComputeHash(u32 addr, int bufw, int w, int h, GETextureForm
}
const u8 *checkp = Memory::GetPointer(addr);
float reduceHashSize = 1.0;
if (reduceHash_)
reduceHashSize = 0.5;
if (bufw <= w) {
// We can assume the data is contiguous. These are the total used pixels.
const u32 totalPixels = bufw * h + (w - bufw);
const u32 sizeInRAM = (textureBitsPerPixel[fmt] * totalPixels) / 8;
const u32 sizeInRAM = (textureBitsPerPixel[fmt] * totalPixels) / 8 * reduceHashSize;
switch (hash_) {
case ReplacedTextureHash::QUICK:
@ -198,7 +206,7 @@ u32 TextureReplacer::ComputeHash(u32 addr, int bufw, int w, int h, GETextureForm
}
} else {
// We have gaps. Let's hash each row and sum.
const u32 bytesPerLine = (textureBitsPerPixel[fmt] * w) / 8;
const u32 bytesPerLine = (textureBitsPerPixel[fmt] * w) / 8 * reduceHashSize;
const u32 stride = (textureBitsPerPixel[fmt] * bufw) / 8;
u32 result = 0;

1
Core/TextureReplacer.h
View file

@ -199,6 +199,7 @@ protected:
bool enabled_;
bool allowVideo_;
bool ignoreAddress_;
bool reduceHash_;
std::string gameID_;
std::string basePath_;
ReplacedTextureHash hash_;