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TextureCacheBase: De-uglify texcache entry lookup even more + documentation

This commit is contained in:
NeoBrainX 2011-12-26 19:45:13 +01:00 committed by NeoBrainX
parent dcf18fbaaf
commit f68ee87e0e
1 changed files with 29 additions and 19 deletions
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48
Source/Core/VideoCommon/Src/TextureCacheBase.cpp
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@ -235,6 +235,9 @@ TextureCache::TCacheEntryBase* TextureCache::Load(unsigned int stage,
TCacheEntryBase *entry = textures[texID];
if (entry)
{
// 1. Adjust reference hash:
// safe texcache: reference hash was calculated above for normal textures. 0 for virtual EFB copies.
// unsafe texcache: 0 for virtual EFB copies. Safe hash for dynamic EFB copies. First pixel for normal textures.
if (g_ActiveConfig.bSafeTextureCache)
{
if (g_ActiveConfig.bCopyEFBToTexture && (entry->isRenderTarget || entry->isDynamic))
@ -255,31 +258,38 @@ TextureCache::TCacheEntryBase* TextureCache::Load(unsigned int stage,
}
}
if (((entry->isRenderTarget || entry->isDynamic) && hash_value == entry->hash && address == entry->addr)
|| ((address == entry->addr) && (hash_value == entry->hash) && full_format == entry->format && entry->num_mipmaps == maxlevel))
// 2. a) For EFB copies, only the hash and the texture address need to match
if ((entry->isRenderTarget || entry->isDynamic) && hash_value == entry->hash && address == entry->addr)
{
// TODO: Print a warning if the format changes! In this case, we could reinterpret the internal texture object data to the new pixel format (similiar to what is already being done in Renderer::ReinterpretPixelFormat())
entry->isDynamic = false;
goto return_entry;
}
// 2. b) For normal textures, all texture parameters need to match
if (address == entry->addr && hash_value == entry->hash && full_format == entry->format &&
entry->num_mipmaps == maxlevel && entry->native_width == nativeW && entry->native_height == nativeH)
{
goto return_entry;
}
// 3. If we reach this line, we'll have to upload the new texture data to VRAM.
// If we're lucky, the texture parameters didn't change and we can reuse the internal texture object instead of destroying and recreating it.
texture_is_dynamic = (entry->isRenderTarget || entry->isDynamic) && !g_ActiveConfig.bCopyEFBToTexture;
// TODO: Don't we need to force texture decoding to RGBA8 for dynamic EFB copies?
// TODO: Actually, it should be enough if the internal texture format matches...
if (!entry->isRenderTarget &&
((!entry->isDynamic && width == entry->native_width && height == entry->native_height && full_format == entry->format && entry->num_mipmaps == maxlevel)
|| (entry->isDynamic && entry->native_width == width && entry->native_height == height)))
{
// reuse the texture
}
else
{
// Let's reload the new texture data into the same texture,
// instead of destroying it and having to create a new one.
// Might speed up movie playback very, very slightly.
texture_is_dynamic = (entry->isRenderTarget || entry->isDynamic) && !g_ActiveConfig.bCopyEFBToTexture;
if (!entry->isRenderTarget &&
((!entry->isDynamic && width == entry->native_width && height == entry->native_height && full_format == entry->format && entry->num_mipmaps == maxlevel)
|| (entry->isDynamic && entry->native_width == width && entry->native_height == height)))
{
// reuse the texture
}
else
{
// delete the texture and make a new one
delete entry;
entry = NULL;
}
// delete the texture and make a new one
delete entry;
entry = NULL;
}
}