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// Copyright 2017 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <algorithm>
#include "Common/Assert.h"
#include "VideoCommon/AbstractTexture.h"
#include "VideoCommon/ImageWrite.h"
AbstractTexture::AbstractTexture(const TextureConfig& c) : m_config(c)
{
}
AbstractTexture::~AbstractTexture() = default;
bool AbstractTexture::Save(const std::string& filename, unsigned int level)
{
// We can't dump compressed textures currently (it would mean drawing them to a RGBA8
// framebuffer, and saving that). TextureCache does not call Save for custom textures
// anyway, so this is fine for now.
_assert_(m_config.format == AbstractTextureFormat::RGBA8);
auto result = level == 0 ? Map() : Map(level);
if (!result.has_value())
{
return false;
}
auto raw_data = result.value();
return TextureToPng(raw_data.data, raw_data.stride, filename, raw_data.width, raw_data.height);
}
std::optional<AbstractTexture::RawTextureInfo> AbstractTexture::Map()
{
if (m_currently_mapped)
{
Unmap();
m_currently_mapped = false;
}
auto result = MapFullImpl();
if (!result.has_value())
{
m_currently_mapped = false;
return {};
}
m_currently_mapped = true;
return result;
}
std::optional<AbstractTexture::RawTextureInfo> AbstractTexture::Map(u32 level, u32 x, u32 y,
u32 width, u32 height)
{
_assert_(level < m_config.levels);
u32 max_level_width = std::max(m_config.width >> level, 1u);
u32 max_level_height = std::max(m_config.height >> level, 1u);
_assert_(width < max_level_width);
_assert_(height < max_level_height);
auto result = MapRegionImpl(level, x, y, width, height);
if (!result.has_value())
{
m_currently_mapped = false;
return {};
}
m_currently_mapped = true;
return result;
}
std::optional<AbstractTexture::RawTextureInfo> AbstractTexture::Map(u32 level)
{
_assert_(level < m_config.levels);
u32 level_width = std::max(m_config.width >> level, 1u);
u32 level_height = std::max(m_config.height >> level, 1u);
return Map(level, 0, 0, level_width, level_height);
}
void AbstractTexture::Unmap()
{
}
std::optional<AbstractTexture::RawTextureInfo> AbstractTexture::MapFullImpl()
{
return {};
}
std::optional<AbstractTexture::RawTextureInfo>
AbstractTexture::MapRegionImpl(u32 level, u32 x, u32 y, u32 width, u32 height)
{
return {};
}
bool AbstractTexture::IsCompressedHostTextureFormat(AbstractTextureFormat format)
{
// This will need to be changed if we add any other uncompressed formats.
return format != AbstractTextureFormat::RGBA8;
}
size_t AbstractTexture::CalculateHostTextureLevelPitch(AbstractTextureFormat format, u32 row_length)
{
switch (format)
{
case AbstractTextureFormat::DXT1:
return static_cast<size_t>(std::max(1u, row_length / 4)) * 8;
case AbstractTextureFormat::DXT3:
case AbstractTextureFormat::DXT5:
case AbstractTextureFormat::BPTC:
return static_cast<size_t>(std::max(1u, row_length / 4)) * 16;
case AbstractTextureFormat::RGBA8:
default:
return static_cast<size_t>(row_length) * 4;
}
}
const TextureConfig& AbstractTexture::GetConfig() const
{
return m_config;
}
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