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MobileGL/MobileGL/MG_Util/Converters/MGToMG/TextureEnumConverter.cpp
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// MobileGL - MobileGL/MG_Util/Converters/MGToMG/TextureEnumConverter.cpp
// Copyright (c) 2025-2026 MobileGL-Dev
// Licensed under the GNU Lesser General Public License v3.0:
// https://www.gnu.org/licenses/gpl-3.0.txt
// https://www.gnu.org/licenses/lgpl-3.0.txt
// SPDX-License-Identifier: LGPL-3.0-only
// End of Source File Header
#include "TextureEnumConverter.h"
#include "MG_Util/Converters/MGToStr/TextureEnumConverter.h"
namespace MobileGL {
namespace MG_Util {
TextureTarget ConvertTextureUploadTargetToTextureTarget(TextureUploadTarget target) {
switch (target) {
case TextureUploadTarget::Texture2D:
case TextureUploadTarget::ProxyTexture2D:
return TextureTarget::Texture2D;
case TextureUploadTarget::Texture1DArray:
case TextureUploadTarget::ProxyTexture1DArray:
return TextureTarget::Texture1DArray;
case TextureUploadTarget::TextureRectangle:
case TextureUploadTarget::ProxyTextureRectangle:
return TextureTarget::TextureRectangle;
case TextureUploadTarget::CubeMapPositiveX:
case TextureUploadTarget::CubeMapNegativeX:
case TextureUploadTarget::CubeMapPositiveY:
case TextureUploadTarget::CubeMapNegativeY:
case TextureUploadTarget::CubeMapPositiveZ:
case TextureUploadTarget::CubeMapNegativeZ:
case TextureUploadTarget::ProxyCubeMap:
return TextureTarget::TextureCubeMap;
case TextureUploadTarget::CubeMapArray:
case TextureUploadTarget::ProxyCubeMapArray:
return TextureTarget::TextureCubeMapArray;
case TextureUploadTarget::Texture2DMultisample:
case TextureUploadTarget::ProxyTexture2DMultisample:
return TextureTarget::Texture2DMultisample;
case TextureUploadTarget::Texture2DMultisampleArray:
case TextureUploadTarget::ProxyTexture2DMultisampleArray:
return TextureTarget::Texture2DMultisampleArray;
case TextureUploadTarget::Texture3D:
case TextureUploadTarget::ProxyTexture3D:
return TextureTarget::Texture3D;
case TextureUploadTarget::Texture1D:
case TextureUploadTarget::ProxyTexture1D:
return TextureTarget::Texture1D;
case TextureUploadTarget::Texture2DArray:
case TextureUploadTarget::ProxyTexture2DArray:
return TextureTarget::Texture2DArray;
default:
return TextureTarget::Unknown;
}
}
TextureInternalFormat ConvertInternalFormatToSized(TextureInternalFormat internalformat,
TextureInputFormat format, TexturePixelDataType type) {
switch (internalformat) {
case TextureInternalFormat::R8:
case TextureInternalFormat::R8Snorm:
case TextureInternalFormat::R16:
case TextureInternalFormat::R16Snorm:
case TextureInternalFormat::RG8:
case TextureInternalFormat::RG8Snorm:
case TextureInternalFormat::RG16:
case TextureInternalFormat::RG16Snorm:
case TextureInternalFormat::R3G3B2:
case TextureInternalFormat::RGB4:
case TextureInternalFormat::RGB5:
case TextureInternalFormat::RGB8:
case TextureInternalFormat::RGB8Snorm:
case TextureInternalFormat::RGB10:
case TextureInternalFormat::RGB12:
case TextureInternalFormat::RGB16Snorm:
case TextureInternalFormat::RGBA2:
case TextureInternalFormat::RGBA4:
case TextureInternalFormat::RGB5A1:
case TextureInternalFormat::RGBA8:
case TextureInternalFormat::RGBA8Snorm:
case TextureInternalFormat::RGB10A2:
case TextureInternalFormat::RGB10A2UI:
case TextureInternalFormat::RGBA12:
case TextureInternalFormat::RGBA16:
case TextureInternalFormat::RGBA16Snorm:
case TextureInternalFormat::SRGB8:
case TextureInternalFormat::SRGB8Alpha8:
case TextureInternalFormat::R16F:
case TextureInternalFormat::RG16F:
case TextureInternalFormat::RGB16F:
case TextureInternalFormat::RGBA16F:
case TextureInternalFormat::R32F:
case TextureInternalFormat::RG32F:
case TextureInternalFormat::RGB32F:
case TextureInternalFormat::RGBA32F:
case TextureInternalFormat::R11FG11FB10F:
case TextureInternalFormat::RGB9E5:
case TextureInternalFormat::R8I:
case TextureInternalFormat::R8UI:
case TextureInternalFormat::R16I:
case TextureInternalFormat::R16UI:
case TextureInternalFormat::R32I:
case TextureInternalFormat::R32UI:
case TextureInternalFormat::RG8I:
case TextureInternalFormat::RG8UI:
case TextureInternalFormat::RG16I:
case TextureInternalFormat::RG16UI:
case TextureInternalFormat::RG32I:
case TextureInternalFormat::RG32UI:
case TextureInternalFormat::RGB8I:
case TextureInternalFormat::RGB8UI:
case TextureInternalFormat::RGB16I:
case TextureInternalFormat::RGB16UI:
case TextureInternalFormat::RGB32I:
case TextureInternalFormat::RGB32UI:
case TextureInternalFormat::RGBA8I:
case TextureInternalFormat::RGBA8UI:
case TextureInternalFormat::RGBA16I:
case TextureInternalFormat::RGBA16UI:
case TextureInternalFormat::RGBA32I:
case TextureInternalFormat::RGBA32UI:
case TextureInternalFormat::DepthComponent16:
case TextureInternalFormat::DepthComponent24:
case TextureInternalFormat::DepthComponent32: // not a standard format in OpenGL core profile
case TextureInternalFormat::DepthComponent32F:
case TextureInternalFormat::Depth24Stencil8:
case TextureInternalFormat::Depth32FStencil8:
// Already sized: both GL_STENCIL_INDEX8 and the unsized GL_STENCIL_INDEX resolve here,
// and there is only one stencil storage to infer.
case TextureInternalFormat::StencilIndex8:
return internalformat;
// probably we should assume unorm here?
case TextureInternalFormat::RGBA: {
switch (type) {
case TexturePixelDataType::UnsignedByte:
case TexturePixelDataType::UnsignedInt8888:
case TexturePixelDataType::UnsignedInt8888Rev:
return TextureInternalFormat::RGBA8;
case TexturePixelDataType::UnsignedShort:
return TextureInternalFormat::RGBA16;
default:
MGLOG_W_ONCE("%s: Can't infer sized internal format from internalformat=%s, format=%s, type=%s, "
"returning original.",
__func__, MG_Util::ConvertTextureInternalFormatToString(internalformat).c_str(),
MG_Util::ConvertTextureInputFormatToString(format).c_str(),
MG_Util::ConvertTexturePixelDataTypeToString(type).c_str());
return internalformat;
}
}
case TextureInternalFormat::RGB: {
switch (type) {
case TexturePixelDataType::UnsignedByte:
return TextureInternalFormat::RGB8;
default:
MGLOG_W_ONCE("%s: Can't infer sized internal format from internalformat=%s, format=%s, type=%s, "
"returning original.",
__func__, MG_Util::ConvertTextureInternalFormatToString(internalformat).c_str(),
MG_Util::ConvertTextureInputFormatToString(format).c_str(),
MG_Util::ConvertTexturePixelDataTypeToString(type).c_str());
return internalformat;
}
}
case TextureInternalFormat::RG: {
switch (type) {
case TexturePixelDataType::UnsignedByte:
return TextureInternalFormat::RG8;
case TexturePixelDataType::UnsignedShort:
return TextureInternalFormat::RG16;
default:
MGLOG_W_ONCE("%s: Can't infer sized internal format from internalformat=%s, format=%s, type=%s, "
"returning original.",
__func__, MG_Util::ConvertTextureInternalFormatToString(internalformat).c_str(),
MG_Util::ConvertTextureInputFormatToString(format).c_str(),
MG_Util::ConvertTexturePixelDataTypeToString(type).c_str());
return internalformat;
}
}
case TextureInternalFormat::Red: {
switch (type) {
case TexturePixelDataType::UnsignedByte:
return TextureInternalFormat::R8;
case TexturePixelDataType::UnsignedShort:
return TextureInternalFormat::R16;
default:
MGLOG_W_ONCE("%s: Can't infer sized internal format from internalformat=%s, format=%s, type=%s, "
"returning original.",
__func__, MG_Util::ConvertTextureInternalFormatToString(internalformat).c_str(),
MG_Util::ConvertTextureInputFormatToString(format).c_str(),
MG_Util::ConvertTexturePixelDataTypeToString(type).c_str());
return internalformat;
}
}
case TextureInternalFormat::DepthComponent: {
switch (type) {
case TexturePixelDataType::UnsignedShort:
return TextureInternalFormat::DepthComponent16;
case TexturePixelDataType::UnsignedInt:
return TextureInternalFormat::DepthComponent32;
case TexturePixelDataType::Float:
return TextureInternalFormat::DepthComponent32F;
default:
MGLOG_W_ONCE("%s: Can't infer sized internal format from internalformat=%s, format=%s, type=%s, "
"returning original.",
__func__, MG_Util::ConvertTextureInternalFormatToString(internalformat).c_str(),
MG_Util::ConvertTextureInputFormatToString(format).c_str(),
MG_Util::ConvertTexturePixelDataTypeToString(type).c_str());
return internalformat;
}
}
case TextureInternalFormat::DepthStencil: {
switch (type) {
case TexturePixelDataType::UnsignedInt248:
return TextureInternalFormat::Depth24Stencil8;
default:
MGLOG_W_ONCE("%s: Can't infer sized internal format from internalformat=%s, format=%s, type=%s, "
"returning original.",
__func__, MG_Util::ConvertTextureInternalFormatToString(internalformat).c_str(),
MG_Util::ConvertTextureInputFormatToString(format).c_str(),
MG_Util::ConvertTexturePixelDataTypeToString(type).c_str());
return internalformat;
}
}
default: {
MGLOG_W_ONCE("%s: Can't infer sized internal format from internalformat=%s, format=%s, type=%s, returning "
"original.",
__func__, MG_Util::ConvertTextureInternalFormatToString(internalformat).c_str(),
MG_Util::ConvertTextureInputFormatToString(format).c_str(),
MG_Util::ConvertTexturePixelDataTypeToString(type).c_str());
return internalformat;
}
}
}
TextureInternalFormat ConvertInternalFormatToUnsized(TextureInternalFormat internalformat) {
switch (internalformat) {
case TextureInternalFormat::R8:
case TextureInternalFormat::R8Snorm:
case TextureInternalFormat::R16:
case TextureInternalFormat::R16Snorm:
case TextureInternalFormat::R16F:
case TextureInternalFormat::R32F:
case TextureInternalFormat::R8I:
case TextureInternalFormat::R8UI:
case TextureInternalFormat::R16I:
case TextureInternalFormat::R16UI:
case TextureInternalFormat::R32I:
case TextureInternalFormat::R32UI:
case TextureInternalFormat::Red:
return TextureInternalFormat::Red;
case TextureInternalFormat::RG8:
case TextureInternalFormat::RG8Snorm:
case TextureInternalFormat::RG16:
case TextureInternalFormat::RG16Snorm:
case TextureInternalFormat::RG16F:
case TextureInternalFormat::RG32F:
case TextureInternalFormat::RG8I:
case TextureInternalFormat::RG8UI:
case TextureInternalFormat::RG16I:
case TextureInternalFormat::RG16UI:
case TextureInternalFormat::RG32I:
case TextureInternalFormat::RG32UI:
case TextureInternalFormat::RG:
return TextureInternalFormat::RG;
case TextureInternalFormat::R3G3B2:
case TextureInternalFormat::RGB4:
case TextureInternalFormat::RGB5:
case TextureInternalFormat::RGB8:
case TextureInternalFormat::RGB8Snorm:
case TextureInternalFormat::RGB10:
case TextureInternalFormat::RGB12:
case TextureInternalFormat::RGB16Snorm:
case TextureInternalFormat::RGB16F:
case TextureInternalFormat::RGB32F:
case TextureInternalFormat::R11FG11FB10F:
case TextureInternalFormat::RGB9E5:
case TextureInternalFormat::SRGB8:
case TextureInternalFormat::RGB8I:
case TextureInternalFormat::RGB8UI:
case TextureInternalFormat::RGB16I:
case TextureInternalFormat::RGB16UI:
case TextureInternalFormat::RGB32I:
case TextureInternalFormat::RGB32UI:
case TextureInternalFormat::RGB:
return TextureInternalFormat::RGB;
case TextureInternalFormat::RGBA2:
case TextureInternalFormat::RGBA4:
case TextureInternalFormat::RGB5A1:
case TextureInternalFormat::RGBA8:
case TextureInternalFormat::RGBA8Snorm:
case TextureInternalFormat::RGB10A2:
case TextureInternalFormat::RGB10A2UI:
case TextureInternalFormat::RGBA12:
case TextureInternalFormat::RGBA16:
case TextureInternalFormat::RGBA16Snorm:
case TextureInternalFormat::SRGB8Alpha8:
case TextureInternalFormat::RGBA16F:
case TextureInternalFormat::RGBA32F:
case TextureInternalFormat::RGBA8I:
case TextureInternalFormat::RGBA8UI:
case TextureInternalFormat::RGBA16I:
case TextureInternalFormat::RGBA16UI:
case TextureInternalFormat::RGBA32I:
case TextureInternalFormat::RGBA32UI:
case TextureInternalFormat::RGBA:
return TextureInternalFormat::RGBA;
case TextureInternalFormat::DepthComponent16:
case TextureInternalFormat::DepthComponent24:
case TextureInternalFormat::DepthComponent32:
case TextureInternalFormat::DepthComponent32F:
case TextureInternalFormat::DepthComponent:
return TextureInternalFormat::DepthComponent;
case TextureInternalFormat::Depth24Stencil8:
case TextureInternalFormat::Depth32FStencil8:
case TextureInternalFormat::DepthStencil:
return TextureInternalFormat::DepthStencil;
default:
MGLOG_W_ONCE("%s: Unknown or unhandled internal format %s, returning original.", __func__,
MG_Util::ConvertTextureInternalFormatToString(internalformat).c_str());
return internalformat;
}
}
} // namespace MG_Util
} // namespace MobileGL
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