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Merge pull request #2080 from SFML/feature/backmerge

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2.6.x -> master backmerge
This commit is contained in:
Lukas Dürrenberger 2022-04-23 12:12:17 +02:00 committed by GitHub
commit 3ae85854e4
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 52 additions and 19 deletions
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12
include/SFML/Graphics/Font.hpp
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@ -355,7 +355,7 @@ private:
////////////////////////////////////////////////////////////
struct Page
{
Page();
explicit Page(bool smooth);
GlyphTable glyphs; //!< Table mapping code points to their corresponding glyph
Texture texture; //!< Texture containing the pixels of the glyphs
@ -369,6 +369,16 @@ private:
////////////////////////////////////////////////////////////
void cleanup();
////////////////////////////////////////////////////////////
/// \brief Find or create the glyphs page corresponding to the given character size
///
/// \param characterSize Reference character size
///
/// \return The glyphs page corresponding to \a characterSize
///
////////////////////////////////////////////////////////////
Page& loadPage(unsigned int characterSize) const;
////////////////////////////////////////////////////////////
/// \brief Load a new glyph and store it in the cache
///

10
include/SFML/Graphics/Image.hpp
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@ -228,9 +228,13 @@ public:
/// kind of feature in real-time you'd better use sf::RenderTexture.
///
/// If \a sourceRect is empty, the whole image is copied.
/// If \a applyAlpha is set to true, the transparency of
/// source pixels is applied. If it is false, the pixels are
/// copied unchanged with their alpha value.
/// If \a applyAlpha is set to true, alpha blending is
/// applied from the source pixels to the destination pixels
/// using the \b over operator. If it is false, the source
/// pixels are copied unchanged with their alpha value.
///
/// See https://en.wikipedia.org/wiki/Alpha_compositing for
/// details on the \b over operator.
///
/// \param source Source image to copy
/// \param destX X coordinate of the destination position

22
src/SFML/Graphics/Font.cpp
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@ -349,7 +349,7 @@ const Font::Info& Font::getInfo() const
const Glyph& Font::getGlyph(Uint32 codePoint, unsigned int characterSize, bool bold, float outlineThickness) const
{
// Get the page corresponding to the character size
GlyphTable& glyphs = m_pages[characterSize].glyphs;
GlyphTable& glyphs = loadPage(characterSize).glyphs;
// Build the key by combining the glyph index (based on code point), bold flag, and outline thickness
Uint64 key = combine(outlineThickness, bold, FT_Get_Char_Index(m_fontHandles ? m_fontHandles->face.get() : nullptr, codePoint));
@ -476,7 +476,7 @@ float Font::getUnderlineThickness(unsigned int characterSize) const
////////////////////////////////////////////////////////////
const Texture& Font::getTexture(unsigned int characterSize) const
{
return m_pages[characterSize].texture;
return loadPage(characterSize).texture;
}
////////////////////////////////////////////////////////////
@ -531,6 +531,18 @@ void Font::cleanup()
}
////////////////////////////////////////////////////////////
Font::Page& Font::loadPage(unsigned int characterSize) const
{
// TODO: Remove this method and use try_emplace instead when updating to C++17
PageTable::iterator pageIterator = m_pages.find(characterSize);
if (pageIterator == m_pages.end())
pageIterator = m_pages.insert(std::make_pair(characterSize, Page(m_isSmooth))).first;
return pageIterator->second;
}
////////////////////////////////////////////////////////////
Glyph Font::loadGlyph(Uint32 codePoint, unsigned int characterSize, bool bold, float outlineThickness) const
{
@ -620,7 +632,7 @@ Glyph Font::loadGlyph(Uint32 codePoint, unsigned int characterSize, bool bold, f
height += 2 * padding;
// Get the glyphs page corresponding to the character size
Page& page = m_pages[characterSize];
Page& page = loadPage(characterSize);
// Find a good position for the new glyph into the texture
glyph.textureRect = findGlyphRect(page, width, height);
@ -816,7 +828,7 @@ bool Font::setCurrentSize(unsigned int characterSize) const
////////////////////////////////////////////////////////////
Font::Page::Page() :
Font::Page::Page(bool smooth) :
nextRow(3)
{
// Make sure that the texture is initialized by default
@ -834,7 +846,7 @@ nextRow(3)
err() << "Failed to load font page texture" << std::endl;
}
texture.setSmooth(true);
texture.setSmooth(smooth);
}
} // namespace sf

19
src/SFML/Graphics/Image.cpp
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@ -257,12 +257,19 @@ void Image::copy(const Image& source, unsigned int destX, unsigned int destY, co
const Uint8* src = srcPixels + j * 4;
Uint8* dst = dstPixels + j * 4;
// Interpolate RGBA components using the alpha value of the source pixel
Uint8 alpha = src[3];
dst[0] = static_cast<Uint8>((src[0] * alpha + dst[0] * (255 - alpha)) / 255);
dst[1] = static_cast<Uint8>((src[1] * alpha + dst[1] * (255 - alpha)) / 255);
dst[2] = static_cast<Uint8>((src[2] * alpha + dst[2] * (255 - alpha)) / 255);
dst[3] = static_cast<Uint8>(alpha + dst[3] * (255 - alpha) / 255);
// Interpolate RGBA components using the alpha values of the destination and source pixels
Uint8 src_alpha = src[3];
Uint8 dst_alpha = dst[3];
Uint8 out_alpha = static_cast<Uint8>(src_alpha + dst_alpha - src_alpha * dst_alpha / 255);
dst[3] = out_alpha;
if (out_alpha)
for (int k = 0; k < 3; k++)
dst[k] = static_cast<Uint8>((src[k] * src_alpha + dst[k] * (out_alpha - src_alpha)) / out_alpha);
else
for (int k = 0; k < 3; k++)
dst[k] = src[k];
}
srcPixels += srcStride;

2
src/SFML/Window/Unix/CursorImpl.cpp
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@ -80,7 +80,7 @@ bool CursorImpl::loadFromPixelsARGB(const Uint8* pixels, Vector2u size, Vector2u
const std::size_t numPixels = static_cast<std::size_t>(size.x) * static_cast<std::size_t>(size.y);
for (std::size_t pixelIndex = 0; pixelIndex < numPixels; ++pixelIndex)
{
cursorImage->pixels[pixelIndex] = static_cast<Uint8>(pixels[pixelIndex * 4 + 2] +
cursorImage->pixels[pixelIndex] = static_cast<Uint32>(pixels[pixelIndex * 4 + 2] +
(pixels[pixelIndex * 4 + 1] << 8) +
(pixels[pixelIndex * 4 + 0] << 16) +
(pixels[pixelIndex * 4 + 3] << 24));