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[Fix] (MG_State/GL_Texture): take GL_UNPACK_SKIP_PIXELS and GL_UNPACK_SKIP_ROWS into account

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swung0x48
2025-10-28 12:13:46 +08:00
parent 7151080a67
commit de78e423fd
1 changed files with 21 additions and 6 deletions
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MobileGL/MG_Impl/GLImpl/Texture/GL_Texture.cpp
+21 -6
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@@ -58,22 +58,29 @@ namespace MobileGL {
if (!TextureImpl::ValidateTextureSubImageOffsets(textureObject, xoffset, width, yoffset, height)) return;
// ======================= Processing ================================
SizeT imageSize =
MG_Util::CalculateInputTextureImageSize(textureInternalFormat,
texturePixelDataType,
{width, height, 1});
// SizeT imageSize =
// MG_Util::CalculateInputTextureImageSize(textureInternalFormat,
// texturePixelDataType,
// {width, height, 1});
auto& mipmap = textureObject->GetMipmap(level);
Vector<Uint8>& data = mipmap.data;
SizeT bytesPerPixel =
MG_Util::GetInputBytesPerPixel(textureInternalFormat, texturePixelDataType);
SizeT rowStride = mipmap.size.x() * bytesPerPixel;
// SizeT rowStride = mipmap.size.x() * bytesPerPixel;
const Uint8* srcData = reinterpret_cast<const Uint8*>(pixels);
if (!srcData) {
return;
}
if (pixels != nullptr) {
auto rowsToSkip = MG_State::pGLContext->GetPixelStoreParam(PixelStoreParam::UnpackSkipRows);
auto pixelsToSkip = MG_State::pGLContext->GetPixelStoreParam(PixelStoreParam::UnpackSkipPixels);
srcData += (rowsToSkip * width + pixelsToSkip);
}
for (GLint row = 0; row < height; ++row) {
SizeT dstOffset = ((yoffset + row) * mipmap.size.x() + xoffset) * bytesPerPixel;
// Should take states from glPixelStorei/glPixelStoref into account
@@ -306,9 +313,17 @@ namespace MobileGL {
texturePixelDataType,
{width, height, 1});
Uint8* skippedPixels = (Uint8 *) pixels;
if (pixels != nullptr) {
auto rowsToSkip = MG_State::pGLContext->GetPixelStoreParam(PixelStoreParam::UnpackSkipRows);
auto pixelsToSkip = MG_State::pGLContext->GetPixelStoreParam(PixelStoreParam::UnpackSkipPixels);
skippedPixels += (rowsToSkip * width + pixelsToSkip);
}
textureObject->SetInternalFormat(textureInternalFormat);
MG_State::GLState::MipmapLevelInput mipmap = MG_State::GLState::MipmapLevelInput(
{width, height, 1}, level, false, 0, {const_cast<void*>(isProxy ? pixels : nullptr), imageSize});
{width, height, 1}, level, false, 0, {const_cast<void*>(isProxy ? (void*)skippedPixels : nullptr), imageSize});
textureObject->SetMipmapLevel(mipmap);
}