From 0777afb85f900d86e34027aa9c2bc33323316e6d Mon Sep 17 00:00:00 2001
From: Egon Elbre <egonelbre@gmail.com>
Date: Sun, 3 Jul 2022 15:40:43 +0300
Subject: [PATCH] gpu: avoid bounds checks in decode

Signed-off-by: Egon Elbre <egonelbre@gmail.com>
---
 gpu/gpu.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gpu/gpu.go b/gpu/gpu.go
index 0977415b..cb566edb 100644
--- a/gpu/gpu.go
+++ b/gpu/gpu.go
@@ -186,6 +186,7 @@ func decodeImageOp(data []byte, refs []interface{}) imageOpData {
 }
 
 func decodeColorOp(data []byte) color.NRGBA {
+	data = data[:ops.TypeColorLen]
 	return color.NRGBA{
 		R: data[1],
 		G: data[2],
@@ -195,6 +196,7 @@ func decodeColorOp(data []byte) color.NRGBA {
 }
 
 func decodeLinearGradientOp(data []byte) linearGradientOpData {
+	data = data[:ops.TypeLinearGradientLen]
 	bo := binary.LittleEndian
 	return linearGradientOpData{
 		stop1: f32.Point{