152 lines
5.0 KiB
C++
152 lines
5.0 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 "VideoBackends/Software/SWTexture.h"
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#include <cstring>
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#include "Common/Assert.h"
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#include "VideoBackends/Software/CopyRegion.h"
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namespace SW
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{
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namespace
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{
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#pragma pack(push, 1)
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struct Pixel
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{
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u8 r;
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u8 g;
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u8 b;
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u8 a;
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};
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#pragma pack(pop)
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void CopyTextureData(const TextureConfig& src_config, const u8* src_ptr, u32 src_x, u32 src_y,
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u32 width, u32 height, const TextureConfig& dst_config, u8* dst_ptr, u32 dst_x,
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u32 dst_y)
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{
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size_t texel_size = AbstractTexture::GetTexelSizeForFormat(src_config.format);
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size_t src_stride = src_config.GetStride();
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size_t src_offset =
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static_cast<size_t>(src_y) * src_stride + static_cast<size_t>(src_x) * texel_size;
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size_t dst_stride = dst_config.GetStride();
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size_t dst_offset =
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static_cast<size_t>(dst_y) * dst_stride + static_cast<size_t>(dst_x) * texel_size;
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size_t copy_len = static_cast<size_t>(width) * texel_size;
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src_ptr += src_offset;
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dst_ptr += dst_offset;
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for (u32 i = 0; i < height; i++)
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{
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std::memcpy(dst_ptr, src_ptr, copy_len);
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src_ptr += src_stride;
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dst_ptr += dst_stride;
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}
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}
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}
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SWTexture::SWTexture(const TextureConfig& tex_config) : AbstractTexture(tex_config)
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{
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m_data.resize(tex_config.width * tex_config.height * 4);
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}
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void SWTexture::CopyRectangleFromTexture(const AbstractTexture* src,
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const MathUtil::Rectangle<int>& src_rect, u32 src_layer,
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u32 src_level, const MathUtil::Rectangle<int>& dst_rect,
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u32 dst_layer, u32 dst_level)
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{
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_assert_(src_level == 0 && src_layer == 0 && dst_layer == 0 && dst_level == 0);
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CopyTextureData(src->GetConfig(), static_cast<const SWTexture*>(src)->m_data.data(),
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src_rect.left, src_rect.top, src_rect.GetWidth(), src_rect.GetHeight(), m_config,
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m_data.data(), dst_rect.left, dst_rect.top);
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}
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void SWTexture::ScaleRectangleFromTexture(const AbstractTexture* source,
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const MathUtil::Rectangle<int>& srcrect,
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const MathUtil::Rectangle<int>& dstrect)
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{
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const SWTexture* software_source_texture = static_cast<const SWTexture*>(source);
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if (srcrect.GetWidth() == dstrect.GetWidth() && srcrect.GetHeight() == dstrect.GetHeight())
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{
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m_data.assign(software_source_texture->GetData(),
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software_source_texture->GetData() + m_data.size());
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}
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else
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{
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std::vector<Pixel> source_pixels;
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source_pixels.resize(srcrect.GetHeight() * srcrect.GetWidth() * 4);
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memcpy(source_pixels.data(), software_source_texture->GetData(), source_pixels.size());
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std::vector<Pixel> destination_pixels;
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destination_pixels.resize(dstrect.GetHeight() * dstrect.GetWidth() * 4);
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CopyRegion(source_pixels.data(), srcrect, destination_pixels.data(), dstrect);
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memcpy(GetData(), destination_pixels.data(), destination_pixels.size());
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}
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}
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void SWTexture::Load(u32 level, u32 width, u32 height, u32 row_length, const u8* buffer,
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size_t buffer_size)
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{
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m_data.assign(buffer, buffer + buffer_size);
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}
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const u8* SWTexture::GetData() const
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{
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return m_data.data();
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}
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u8* SWTexture::GetData()
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{
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return m_data.data();
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}
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SWStagingTexture::SWStagingTexture(StagingTextureType type, const TextureConfig& config)
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: AbstractStagingTexture(type, config)
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{
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m_data.resize(m_texel_size * config.width * config.height);
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m_map_pointer = reinterpret_cast<char*>(m_data.data());
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m_map_stride = m_texel_size * config.width;
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}
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SWStagingTexture::~SWStagingTexture() = default;
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void SWStagingTexture::CopyFromTexture(const AbstractTexture* src,
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const MathUtil::Rectangle<int>& src_rect, u32 src_layer,
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u32 src_level, const MathUtil::Rectangle<int>& dst_rect)
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{
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_assert_(src_level == 0 && src_layer == 0);
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CopyTextureData(src->GetConfig(), static_cast<const SWTexture*>(src)->GetData(), src_rect.left,
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src_rect.top, src_rect.GetWidth(), src_rect.GetHeight(), m_config, m_data.data(),
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dst_rect.left, dst_rect.top);
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m_needs_flush = true;
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}
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void SWStagingTexture::CopyToTexture(const MathUtil::Rectangle<int>& src_rect, AbstractTexture* dst,
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const MathUtil::Rectangle<int>& dst_rect, u32 dst_layer,
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u32 dst_level)
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{
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_assert_(dst_level == 0 && dst_layer == 0);
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CopyTextureData(m_config, m_data.data(), src_rect.left, src_rect.top, src_rect.GetWidth(),
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src_rect.GetHeight(), dst->GetConfig(), static_cast<SWTexture*>(dst)->GetData(),
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dst_rect.left, dst_rect.top);
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m_needs_flush = true;
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}
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bool SWStagingTexture::Map()
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{
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return true;
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}
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void SWStagingTexture::Unmap()
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{
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}
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void SWStagingTexture::Flush()
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{
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m_needs_flush = false;
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}
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} // namespace SW
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