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Replace black with transparent, increase atlas size

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This commit is contained in:
Dan Paulat 2023-08-02 00:04:00 -05:00
parent bc1bf8cef6
commit f0bdeb09b1
2 changed files with 19 additions and 5 deletions
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4
scwx-qt/source/scwx/qt/manager/resource_manager.cpp
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@ -92,7 +92,7 @@ void LoadImageResources(const std::vector<std::string>& urlStrings)
if (textureCached)
{
util::TextureAtlas& textureAtlas = util::TextureAtlas::Instance();
textureAtlas.BuildAtlas(1024, 1024);
textureAtlas.BuildAtlas(2048, 2048);
}
}
@ -119,7 +119,7 @@ static void LoadTextures()
":/res/textures/lines/default-1x7.png");
textureAtlas.RegisterTexture("lines/test-pattern",
":/res/textures/lines/test-pattern.png");
textureAtlas.BuildAtlas(1024, 1024);
textureAtlas.BuildAtlas(2048, 2048);
}
} // namespace ResourceManager

20
scwx-qt/source/scwx/qt/util/texture_atlas.cpp
View file

@ -3,6 +3,7 @@
#include <scwx/network/cpr.hpp>
#include <scwx/util/logger.hpp>
#include <execution>
#include <shared_mutex>
#include <unordered_map>
#include <variant>
@ -404,18 +405,31 @@ TextureAtlas::Impl::LoadImage(const std::string& imagePath)
}
// Create a view pointing to the STB image data
auto imageView = boost::gil::interleaved_view(
auto stbView = boost::gil::interleaved_view(
width,
height,
reinterpret_cast<boost::gil::rgba8_pixel_t*>(pixelData),
width * desiredChannels);
// Copy the view to the destination image
image = boost::gil::rgba8_image_t(imageView);
image = boost::gil::rgba8_image_t(stbView);
auto& view = boost::gil::view(image);
// If no alpha channel, replace black with transparent
if (numChannels == 3)
{
// TODO: If no alpha channel, replace black with transparent
std::for_each(
std::execution::par_unseq,
view.begin(),
view.end(),
[](boost::gil::rgba8_pixel_t& pixel)
{
static const boost::gil::rgba8_pixel_t kBlack {0, 0, 0, 255};
if (pixel == kBlack)
{
pixel[3] = 0;
}
});
}
stbi_image_free(pixelData);