fix: Work around a bug in the Mali T720 compiler (#10340) 59aa55b5d0

Co-authored-by: Chris Dalton <99840794+csmartdalton@users.noreply.github.com>

.rive_head

diff --git a/.rive_head b/.rive_head
index a19b195..a96f1ed 100644
--- a/.rive_head
+++ b/.rive_head
@@ -1 +1 @@
-583274d7b9361269fb90db7b080c1c3e1d71df44
+59aa55b5d066c8e82d10b5344eb40081d911b728

renderer/src/shaders/draw_path_common.glsl

diff --git a/renderer/src/shaders/draw_path_common.glsl b/renderer/src/shaders/draw_path_common.glsl
index f3b428e..0d12b40 100644
--- a/renderer/src/shaders/draw_path_common.glsl
+++ b/renderer/src/shaders/draw_path_common.glsl
@@ -779,7 +779,11 @@
         if (bool(contourIDWithFlags & MIRRORED_CONTOUR_CONTOUR_FLAG) !=
             bool(contourIDWithFlags & NEGATE_PATH_FILL_COVERAGE_FLAG))
         {
-            outCoverages.x = -outCoverages.x;
+            // Effectively: outCoverages.x = -outCoverages.x
+            //
+            // ... But don't write that because it hits a bug in the Mali T720
+            // compiler that also negates Y.
+            outCoverages *= float4(-1., +1., +1., +1.);
         }
 #endif // !RENDER_MODE_MSAA