Revert: Remove minimum scale clamping for pattern rendering #248

This reverts the change that clamped pattern scale values to a minimum of 1.0.
While the fix ensured correct rendering for extremely small pattern scales,
it caused large intermediate canvas allocations, leading to high memory usage
and performance issues in some cases.

The visible and practical rendering improvements remain, but the part of the
fix that affected tiny sub-pixel scale cases has been reverted to avoid
excessive canvas sizes.

Author: sammycage

source/svgpaintelement.cpp

@@ -289,8 +289,8 @@ bool SVGPatternElement::applyPaint(SVGRenderState& state, float opacity) const
     }
 
     auto currentTransform = attributes.patternTransform() * state.currentTransform();
-    auto xScale = std::max(1.f, currentTransform.xScale());
-    auto yScale = std::max(1.f, currentTransform.yScale());
+    auto xScale = currentTransform.xScale();
+    auto yScale = currentTransform.yScale();
 
     auto patternImage = Canvas::create(0, 0, patternRect.w * xScale, patternRect.h * yScale);
     auto patternImageTransform = Transform::scaled(xScale, yScale);
@@ -309,7 +309,7 @@ bool SVGPatternElement::applyPaint(SVGRenderState& state, float opacity) const
 
     auto patternTransform = attributes.patternTransform();
     patternTransform.translate(patternRect.x, patternRect.y);
-    patternTransform.scale(1.f / xScale, 1.f / yScale);
+    patternTransform.scale(patternRect.w / patternImage->width(), patternRect.h / patternImage->height());
     state->setTexture(*patternImage, TextureType::Tiled, opacity, patternTransform);
     return true;
 }