C++ TCacheEntryBase::CopyRectangleFromTexture方法代码示例

void TextureCacheBase::ScaleTextureCacheEntryTo(TextureCacheBase::TCacheEntryBase** entry, u32 new_width, u32 new_height)
{
	if ((*entry)->config.width == new_width && (*entry)->config.height == new_height)
	{
		return;
	}

	u32 max = g_renderer->GetMaxTextureSize();
	if (max < new_width || max < new_height)
	{
		ERROR_LOG(VIDEO, "Texture too big, width = %d, height = %d", new_width, new_height);
		return;
	}

	TextureCacheBase::TCacheEntryConfig newconfig;
	newconfig.width = new_width;
	newconfig.height = new_height;
	newconfig.layers = (*entry)->config.layers;
	newconfig.rendertarget = true;

	TCacheEntryBase* newentry = AllocateTexture(newconfig);
	if (newentry)
	{
		newentry->SetGeneralParameters((*entry)->addr, (*entry)->size_in_bytes, (*entry)->format);
		newentry->SetDimensions((*entry)->native_width, (*entry)->native_height, 1);
		newentry->SetHashes((*entry)->base_hash, (*entry)->hash);
		newentry->frameCount = frameCount;
		newentry->is_efb_copy = (*entry)->is_efb_copy;
		MathUtil::Rectangle<int> srcrect, dstrect;
		srcrect.left = 0;
		srcrect.top = 0;
		srcrect.right = (*entry)->config.width;
		srcrect.bottom = (*entry)->config.height;
		dstrect.left = 0;
		dstrect.top = 0;
		dstrect.right = new_width;
		dstrect.bottom = new_height;
		newentry->CopyRectangleFromTexture(*entry, srcrect, dstrect);

		// Keep track of the pointer for textures_by_hash
		if ((*entry)->textures_by_hash_iter != textures_by_hash.end())
		{
			newentry->textures_by_hash_iter = textures_by_hash.emplace((*entry)->hash, newentry);
		}

		InvalidateTexture(GetTexCacheIter(*entry));

		*entry = newentry;
		textures_by_address.emplace((*entry)->addr, *entry);
	}
	else
	{
		ERROR_LOG(VIDEO, "Scaling failed");
	}
}

TextureCache::TCacheEntryBase* TextureCache::DoPartialTextureUpdates(TexCache::iterator iter_t)
{
	TCacheEntryBase* entry_to_update = iter_t->second;
	const bool isPaletteTexture = (entry_to_update->format == GX_TF_C4
		|| entry_to_update->format == GX_TF_C8
		|| entry_to_update->format == GX_TF_C14X2
		|| entry_to_update->format >= 0x10000);

	// Efb copies and paletted textures are excluded from these updates, until there's an example where a game would
	// benefit from this. Both would require more work to be done.
	// TODO: Implement upscaling support for normal textures, and then remove the efb to ram and the scaled efb restrictions
	if (entry_to_update->IsEfbCopy()
		|| isPaletteTexture)
		return entry_to_update;

	u32 block_width = TexDecoder_GetBlockWidthInTexels(entry_to_update->format);
	u32 block_height = TexDecoder_GetBlockHeightInTexels(entry_to_update->format);
	u32 block_size = block_width * block_height * TexDecoder_GetTexelSizeInNibbles(entry_to_update->format) / 2;

	u32 numBlocksX = (entry_to_update->native_width + block_width - 1) / block_width;

	TexCache::iterator iter = textures_by_address.lower_bound(entry_to_update->addr);
	TexCache::iterator iterend = textures_by_address.upper_bound(entry_to_update->addr + entry_to_update->size_in_bytes);
	bool entry_need_scaling = true;
	while (iter != iterend)
	{
		TCacheEntryBase* entry = iter->second;
		if (entry != entry_to_update
			&& entry->IsEfbCopy()
			&& entry_to_update->addr <= entry->addr
			&& entry->addr + entry->size_in_bytes <= entry_to_update->addr + entry_to_update->size_in_bytes
			&& entry->frameCount == FRAMECOUNT_INVALID
			&& entry->memory_stride == numBlocksX * block_size)
		{
			u32 block_offset = (entry->addr - entry_to_update->addr) / block_size;
			u32 block_x = block_offset % numBlocksX;
			u32 block_y = block_offset / numBlocksX;

			u32 x = block_x * block_width;
			u32 y = block_y * block_height;
			MathUtil::Rectangle<int> srcrect, dstrect;
			srcrect.left = 0;
			srcrect.top = 0;
			dstrect.left = 0;
			dstrect.top = 0;
			if (entry_need_scaling)
			{
				entry_need_scaling = false;
				u32 w = entry_to_update->native_width * entry->config.width / entry->native_width;
				u32 h = entry_to_update->native_height * entry->config.height / entry->native_height;
				u32 max = g_renderer->GetMaxTextureSize();
				if (max < w || max < h)
				{
					iter++;
					continue;
				}
				if (entry_to_update->config.width != w || entry_to_update->config.height != h)
				{
					TextureCache::TCacheEntryConfig newconfig;
					newconfig.width = w;
					newconfig.height = h;
					newconfig.rendertarget = true;
					TCacheEntryBase* newentry = AllocateTexture(newconfig);
					newentry->SetGeneralParameters(entry_to_update->addr, entry_to_update->size_in_bytes, entry_to_update->format);
					newentry->SetDimensions(entry_to_update->native_width, entry_to_update->native_height, 1);
					newentry->SetHashes(entry_to_update->base_hash, entry_to_update->hash);
					newentry->frameCount = frameCount;
					newentry->is_efb_copy = false;
					srcrect.right = entry_to_update->config.width;
					srcrect.bottom = entry_to_update->config.height;
					dstrect.right = w;
					dstrect.bottom = h;
					newentry->CopyRectangleFromTexture(entry_to_update, srcrect, dstrect);
					entry_to_update = newentry;
					u64 key = iter_t->first;
					iter_t = FreeTexture(iter_t);
					textures_by_address.emplace(key, entry_to_update);
				}
			}
			srcrect.right = entry->config.width;
			srcrect.bottom = entry->config.height;
			dstrect.left = x * entry_to_update->config.width / entry_to_update->native_width;
			dstrect.top = y * entry_to_update->config.height / entry_to_update->native_height;
			dstrect.right = (x + entry->native_width) * entry_to_update->config.width / entry_to_update->native_width;
			dstrect.bottom = (y + entry->native_height) * entry_to_update->config.height / entry_to_update->native_height;
			entry_to_update->CopyRectangleFromTexture(entry, srcrect, dstrect);
			// Mark the texture update as used, so it isn't applied more than once
			entry->frameCount = frameCount;
		}
		++iter;
	}
	return entry_to_update;
}