diff --git a/src/gba/renderers/gl.c b/src/gba/renderers/gl.c
index 3969b4b05..283d602f0 100644
--- a/src/gba/renderers/gl.c
+++ b/src/gba/renderers/gl.c
@@ -309,10 +309,10 @@ static const char* const _renderMode35 =
 	"	ivec2 offset[4];\n"
 	"	vec2 incoord = texCoord;\n"
 	"	if (mosaic.x > 1) {\n"
-	"		incoord.x = floor(MOSAIC(incoord.x, mosaic.x));\n"
+	"		incoord.x = float(MOSAIC(incoord.x, mosaic.x));\n"
 	"	}\n"
 	"	if (mosaic.y > 1) {\n"
-	"		incoord.y = floor(MOSAIC(incoord.y, mosaic.y));\n"
+	"		incoord.y = float(MOSAIC(incoord.y, mosaic.y));\n"
 	"	}\n"
 	"	loadAffine(int(incoord.y), mat, offset);\n"
 	"	float y = fract(incoord.y);\n"
@@ -370,10 +370,10 @@ static const char* const _renderMode4 =
 	"	ivec2 offset[4];\n"
 	"	vec2 incoord = texCoord;\n"
 	"	if (mosaic.x > 1) {\n"
-	"		incoord.x = floor(MOSAIC(incoord.x, mosaic.x));\n"
+	"		incoord.x = float(MOSAIC(incoord.x, mosaic.x));\n"
 	"	}\n"
 	"	if (mosaic.y > 1) {\n"
-	"		incoord.y = floor(MOSAIC(incoord.y, mosaic.y));\n"
+	"		incoord.y = float(MOSAIC(incoord.y, mosaic.y));\n"
 	"	}\n"
 	"	loadAffine(int(incoord.y), mat, offset);\n"
 	"	float y = fract(incoord.y);\n"