Catcrafts/Crafter.Asset
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opaque texture check

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This commit is contained in:
Jorijn van der Graaf 2026-03-10 19:01:01 +01:00
commit fc85c5318b
1 changed files with 28 additions and 10 deletions
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38
interfaces/Crafter.Asset-Texture.cppm
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@ -26,11 +26,17 @@ import Crafter.Math;
namespace fs = std::filesystem; namespace fs = std::filesystem;
export namespace Crafter { export namespace Crafter {
enum class OpaqueType : std::uint8_t {
FullyOpaque, // All pixels have A of 255
SemiOpaque, // All pixels have A of 0 or 255 (no blending needed)
Transparent // Color blending is used
};
template <typename T> template <typename T>
struct TextureAsset { struct TextureAsset {
std::uint32_t sizeX; std::uint16_t sizeX;
std::uint32_t sizeY; std::uint16_t sizeY;
std::uint32_t sizeZ; OpaqueType opaque;
std::vector<T> pixels; std::vector<T> pixels;
void Save(fs::path path) { void Save(fs::path path) {
@ -38,8 +44,7 @@ export namespace Crafter {
file.write(reinterpret_cast<char*>(&sizeX), sizeof(sizeX)); file.write(reinterpret_cast<char*>(&sizeX), sizeof(sizeX));
file.write(reinterpret_cast<char*>(&sizeY), sizeof(sizeY)); file.write(reinterpret_cast<char*>(&sizeY), sizeof(sizeY));
file.write(reinterpret_cast<char*>(&sizeZ), sizeof(sizeZ)); file.write(reinterpret_cast<char*>(&opaque), sizeof(opaque));
file.write(reinterpret_cast<char*>(pixels.data()), pixels.size() * sizeof(T)); file.write(reinterpret_cast<char*>(pixels.data()), pixels.size() * sizeof(T));
} }
@ -50,11 +55,10 @@ export namespace Crafter {
file.read(reinterpret_cast<char*>(&tex.sizeX), sizeof(tex.sizeX)); file.read(reinterpret_cast<char*>(&tex.sizeX), sizeof(tex.sizeX));
file.read(reinterpret_cast<char*>(&tex.sizeY), sizeof(tex.sizeY)); file.read(reinterpret_cast<char*>(&tex.sizeY), sizeof(tex.sizeY));
file.read(reinterpret_cast<char*>(&tex.sizeZ), sizeof(tex.sizeZ)); file.read(reinterpret_cast<char*>(&tex.opaque), sizeof(tex.opaque));
tex.pixels.resize(tex.sizeX * tex.sizeY);
tex.pixels.resize(tex.sizeX * tex.sizeY * tex.sizeZ); file.read(reinterpret_cast<char*>(tex.pixels.data()), tex.sizeX * tex.sizeY * sizeof(T));
file.read(reinterpret_cast<char*>(tex.pixels.data()), tex.sizeX * tex.sizeY * tex.sizeZ * sizeof(T));
return tex; return tex;
} }
@ -70,12 +74,26 @@ export namespace Crafter {
tex.sizeX = sizeX; tex.sizeX = sizeX;
tex.sizeY = sizeY; tex.sizeY = sizeY;
tex.sizeZ = 1;
tex.pixels.resize(tex.sizeX*tex.sizeY); tex.pixels.resize(tex.sizeX*tex.sizeY);
std::memcpy(tex.pixels.data(), data, tex.sizeX * tex.sizeY * 4); std::memcpy(tex.pixels.data(), data, tex.sizeX * tex.sizeY * 4);
tex.opaque = OpaqueType::FullyOpaque;
for(std::uint32_t i = 0; i < tex.sizeX* tex.sizeY; i++) {
if(tex.pixels[i].a != 255) {
tex.opaque = OpaqueType::SemiOpaque;
for(std::uint32_t i2 = i; i2 < tex.sizeX* tex.sizeY; i2++) {
if(tex.pixels[i].a != 0 && tex.pixels[i].a != 255) {
tex.opaque = OpaqueType::Transparent;
return tex;
}
}
return tex;
}
}
return tex; return tex;
} }
}; };