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