diff --git a/include/gp/bitops.hpp b/include/gp/bitops.hpp
index b6a62ec..142a58c 100644
--- a/include/gp/bitops.hpp
+++ b/include/gp/bitops.hpp
@@ -62,8 +62,8 @@ namespace gp{
 			v.value
 		}{}
 
-		endian_wrapper& operator=(T value) {
-			mode == endian::native ? value : swap_endian(value);
+		endian_wrapper& operator=(T p) {
+			value = mode == endian::native ? p : swap_endian(p);
 			return *this;
 		}
 
diff --git a/include/gp/rendering/bmp_viewport.hpp b/include/gp/rendering/bmp_viewport.hpp
index 571b1bb..16c8c69 100644
--- a/include/gp/rendering/bmp_viewport.hpp
+++ b/include/gp/rendering/bmp_viewport.hpp
@@ -34,10 +34,10 @@ namespace gp{
 		{}
 
 		gp::buffer<char>::associated_iterator write(gp::buffer<char> destination) {
-			using sle16 = /*gp::endian_wrapper<*/int16_t/*, gp::endian::little>*/;
-			using sbe16 = /*gp::endian_wrapper<*/int16_t/*, gp::endian::big>*/;
-			using sle32 = /*gp::endian_wrapper<*/int32_t/*, gp::endian::little>*/;
-			using sbe32 = /*gp::endian_wrapper<*/int32_t/*, gp::endian::big>*/;
+			using sle16 = gp::endian_wrapper<int16_t, gp::endian::little>;
+			using sbe16 = gp::endian_wrapper<int16_t, gp::endian::big>;
+			using sle32 = gp::endian_wrapper<int32_t, gp::endian::little>;
+			using sbe32 = gp::endian_wrapper<int32_t, gp::endian::big>;
 
 			auto it = destination.begin();
 			*(it++) = 'B';
@@ -105,10 +105,10 @@ namespace gp{
 						if constexpr (std::is_same<color_type, gp::vec4_g<uint8_t>>::value)
 						{
 							auto color = get(row, line);
-							*(it++) = color.x;
-							*(it++) = color.y;
-							*(it++) = color.z;
-							*(it++) = color.w;
+							*(it++) = color.b();
+							*(it++) = color.g();
+							*(it++) = color.r();
+							*(it++) = color.a();
 						} else {
 							it = it + sizeof(color_type);
 						}
diff --git a/tests/math.cpp b/tests/math.cpp
index 537d077..7639ae3 100644
--- a/tests/math.cpp
+++ b/tests/math.cpp
@@ -45,29 +45,19 @@ struct render_test : public test_scaffold {
 	virtual int run() {
 		int res = 0;
 		renderer a;
-		a._resolution = vec2{1000,500};
+		a._resolution = vec2{128,64};
+		a.passes = 6;
+		a.projection_end = 4;
 
 		a.sky_box = [](vec3) -> color_t {return {0,0,0,0};};
 		auto v = a.materials.push(
 			[&](vec3 p) -> color_t {
-				//return color_t{0,0,1,1};
-				const float EPSILON = 0.001;
-				/*vec3(
-        			a.sdf(vec3(p.x + EPSILON, p.y, p.z)).distance - a.sdf(vec3(p.x - EPSILON, p.y, p.z)).distance,
-        			a.sdf(vec3(p.x, p.y + EPSILON, p.z)).distance - a.sdf(vec3(p.x, p.y - EPSILON, p.z)).distance,
-        			a.sdf(vec3(p.x, p.y, p.z  + EPSILON)).distance - a.sdf(vec3(p.x, p.y, p.z - EPSILON)).distance
-    			)*/
-				auto normals = p.normalize();
-				
-				auto light = vec3(1,1,1).normalize();
-				
-				auto tmp = light*p;
-				auto color = tmp.x+tmp.y+tmp.z;
-
-
-
-				return vec4(vec3(color, color, color), 1.0);
-				//return {v.normalize(), 1.0};
+				color_t ret;
+				ret.r() = 1;
+				ret.g() = 1;
+				ret.b() = 0;
+				ret.a() = 1;
+				return ret;
 			}
 		);
 
@@ -86,7 +76,7 @@ struct render_test : public test_scaffold {
 		using pic_color = gp::vec4_g<uint8_t>;
 
 		gp::bmp_viewport<true, pic_color> vp{
-			{1000,500},
+			{128,64},
 			[&](gp::vec2_g<int32_t> p) -> pic_color {
 				auto orig = a.render({(float)p.x,(float)p.y});
 				pic_color ret{};
@@ -98,7 +88,7 @@ struct render_test : public test_scaffold {
 			}
 		};
 
-		gp::array<char, 400000000>* buff = new gp::array<char, 400000000>();
+		gp::array<char, 300000>* buff = new gp::array<char, 300000>();
 
 		auto begin = std::chrono::steady_clock::now();