diff --git a/Cargo.lock b/Cargo.lock
index 5b028ce..96eaa40 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -253,12 +253,12 @@ dependencies = [
 [[package]]
 name = "hbbytecode"
 version = "0.1.0"
-source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#faa8dd2e6fabe2e0e4a375e677171856da491c61"
+source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#5b23a0661b10e9dcd492d5d97f8ad6077162a9d3"
 
 [[package]]
 name = "hblang"
 version = "0.1.0"
-source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#faa8dd2e6fabe2e0e4a375e677171856da491c61"
+source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#5b23a0661b10e9dcd492d5d97f8ad6077162a9d3"
 dependencies = [
  "hashbrown 0.15.0",
  "hbbytecode",
@@ -270,7 +270,7 @@ dependencies = [
 [[package]]
 name = "hbvm"
 version = "0.1.0"
-source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#faa8dd2e6fabe2e0e4a375e677171856da491c61"
+source = "git+https://git.ablecorp.us/AbleOS/holey-bytes.git#5b23a0661b10e9dcd492d5d97f8ad6077162a9d3"
 dependencies = [
  "hbbytecode",
 ]
diff --git a/sysdata/libraries/render/src/lib.hb b/sysdata/libraries/render/src/lib.hb
index 66a68ee..aad9e1e 100644
--- a/sysdata/libraries/render/src/lib.hb
+++ b/sysdata/libraries/render/src/lib.hb
@@ -37,12 +37,15 @@ light_cyan := Color.(255, 255, 0, 255)
 put_pixel := mode.put_pixel
 put_rect := mode.put_rect
 put_filled_rect := mode.put_filled_rect
+put_circle := mode.put_circle
+put_filled_circle := mode.put_filled_circle
+put_textured_circle := mode.put_textured_circle
 put_line := mode.put_line
 clear := mode.clear
 put_surface := mode.put_surface
 put_scaled := mode.put_scaled
 put_tri_wireframe := mode.put_tri_wireframe
-put_tri_filled := mode.put_tri_filled
+put_filled_tri := mode.put_filled_tri
 // thanks peony for these three!
 put_trirect := mode.put_trirect
 put_vline := mode.put_vline
diff --git a/sysdata/libraries/render/src/software.hb b/sysdata/libraries/render/src/software.hb
index 455d237..d205fbb 100644
--- a/sysdata/libraries/render/src/software.hb
+++ b/sysdata/libraries/render/src/software.hb
@@ -329,14 +329,14 @@ put_hline := fn(surface: Surface, y: uint, x0: uint, x1: uint, color: Color): vo
 	return
 }
 
-put_tri_wireframe := fn(surface: Surface, p0: Vec2(uint), p1: Vec2(uint), p2: Vec2(uint), color: Color): void {
+put_tri := fn(surface: Surface, p0: Vec2(uint), p1: Vec2(uint), p2: Vec2(uint), color: Color): void {
 	put_line(surface, p0, p1, color)
 	put_line(surface, p1, p2, color)
 	put_line(surface, p2, p0, color)
 	return
 }
 
-put_tri_filled := fn(surface: Surface, p0: Vec2(uint), p1: Vec2(uint), p2: Vec2(uint), color: Color): void {
+put_filled_tri := fn(surface: Surface, p0: Vec2(uint), p1: Vec2(uint), p2: Vec2(uint), color: Color): void {
 	if p2.y < p0.y {
 		tmp := p0
 		p0 = p2
@@ -357,24 +357,121 @@ put_tri_filled := fn(surface: Surface, p0: Vec2(uint), p1: Vec2(uint), p2: Vec2(
 
 	primary_dx := @as(int, @bitcast(p2.x - p0.x))
 	primary_dy := @as(int, @bitcast(p2.y - p0.y))
+	primary_x := p0.x
+	primary_step := primary_dx / primary_dy
 	primary_error := @as(int, 2) * primary_dx - primary_dy
-	
 
 	secondary_dx := @as(int, @bitcast(p1.x - p0.x))
 	secondary_dy := @as(int, @bitcast(p1.y - p0.y))
+	secondary_x := p0.x
+	secondary_step := secondary_dx / secondary_dy
 	secondary_error := @as(int, 2) * secondary_dx - secondary_dy
-	
-	y := p0.y
-	loop if y > p2.y break else {
-		if primary_error > 0 {
-			x += xi
-			primary_error += 2 * (dx - dy)
-		} else {
-			primary_error += 2 * dx
-		}
 
+	y := p0.y
+	loop if y > p1.y break else {
+		put_pixel(surface, .(primary_x, y), color)
+		put_pixel(surface, .(secondary_x, y), color)
+		primary_x = @as(uint, @bitcast(@as(int, @bitcast(primary_x)) + primary_step))
+		secondary_x = @as(uint, @bitcast(@as(int, @bitcast(secondary_x)) + secondary_step))
+		y += 1
+	}
+
+	secondary_dx = @as(int, @bitcast(p2.x - p1.x))
+	secondary_dy = @as(int, @bitcast(p2.y - p1.y))
+	secondary_x = p1.x
+	secondary_step = secondary_dx / secondary_dy
+	secondary_error = @as(int, 2) * secondary_dx - secondary_dy
+
+	loop if y > p2.y break else {
+		put_pixel(surface, .(primary_x, y), color)
+		put_pixel(surface, .(secondary_x, y), color)
+		primary_x = @as(uint, @bitcast(@as(int, @bitcast(primary_x)) + primary_step))
+		secondary_x = @as(uint, @bitcast(@as(int, @bitcast(secondary_x)) + secondary_step))
 		y += 1
 	}
 
+	return
+}
+
+put_circle := fn(surface: Surface, pos: Vec2(uint), radius: uint, color: Color): void {
+	x := 0
+	y := radius
+	error := @as(int, 3) - @as(int, @intcast(2 * radius));
+	*@inline(indexptr, surface, pos.x + radius, pos.y) = color;
+	*@inline(indexptr, surface, pos.x - radius, pos.y) = color;
+	*@inline(indexptr, surface, pos.x, pos.y + radius) = color;
+	*@inline(indexptr, surface, pos.x, pos.y - radius) = color
+
+	loop if y < x break else {
+		x += 1
+
+		if error > 0 {
+			y -= 1
+			error += 4 * (@as(int, @intcast(x)) - @as(int, @intcast(y))) + 10
+		} else {
+			error += 4 * @intcast(x) + 6
+		};
+		*@inline(indexptr, surface, pos.x + x, pos.y + y) = color;
+		*@inline(indexptr, surface, pos.x + y, pos.y + x) = color;
+		*@inline(indexptr, surface, pos.x - x, pos.y + y) = color;
+		*@inline(indexptr, surface, pos.x - y, pos.y + x) = color;
+		*@inline(indexptr, surface, pos.x + x, pos.y - y) = color;
+		*@inline(indexptr, surface, pos.x + y, pos.y - x) = color;
+		*@inline(indexptr, surface, pos.x - x, pos.y - y) = color;
+		*@inline(indexptr, surface, pos.x - y, pos.y - x) = color
+	}
+
+	return
+}
+
+put_filled_circle := fn(surface: Surface, pos: Vec2(uint), radius: uint, color: Color): void {
+	x := 0
+	y := radius
+	error := @as(int, 3) - @as(int, @intcast(2 * radius))
+	@inline(put_hline, surface, pos.y - x, pos.x - radius, pos.x + radius, color);
+	*@inline(indexptr, surface, pos.x, pos.y + radius) = color;
+	*@inline(indexptr, surface, pos.x, pos.y - radius) = color
+
+	loop if y < x break else {
+		x += 1
+
+		if error > 0 {
+			@inline(put_hline, surface, pos.y + y, pos.x - x, pos.x + x, color)
+			@inline(put_hline, surface, pos.y - y, pos.x - x, pos.x + x, color)
+			y -= 1
+			error += 4 * (@as(int, @intcast(x)) - @as(int, @intcast(y))) + 10
+		} else {
+			error += 4 * @intcast(x) + 6
+		}
+		@inline(put_hline, surface, pos.y + x, pos.x - y, pos.x + y, color)
+		@inline(put_hline, surface, pos.y - x, pos.x - y, pos.x + y, color)
+	}
+
+	return
+}
+
+put_textured_circle := fn(surface: Surface, source: Surface, source_pos: Vec2(uint), pos: Vec2(uint), radius: uint): void {
+	x := 0
+	y := radius
+	error := @as(int, 3) - @as(int, @intcast(2 * radius))
+	@inline(memory.copy, Color, @inline(indexptr, source, source_pos.x - y, source_pos.y), @inline(indexptr, surface, pos.x - y, pos.y), 2 * y);
+	*@inline(indexptr, surface, pos.x, pos.y + y) = *@inline(indexptr, source, source_pos.x, source_pos.y + y);
+	*@inline(indexptr, surface, pos.x, pos.y - y) = *@inline(indexptr, source, source_pos.x, source_pos.y - y)
+
+	loop if y < x break else {
+		x += 1
+
+		if error > 0 {
+			@inline(memory.copy, Color, @inline(indexptr, source, source_pos.x - x, source_pos.y + y), @inline(indexptr, surface, pos.x - x, pos.y + y), 2 * x)
+			@inline(memory.copy, Color, @inline(indexptr, source, source_pos.x - x, source_pos.y - y), @inline(indexptr, surface, pos.x - x, pos.y - y), 2 * x)
+			y -= 1
+			error += 4 * (@as(int, @intcast(x)) - @as(int, @intcast(y))) + 10
+		} else {
+			error += 4 * @intcast(x) + 6
+		}
+		@inline(memory.copy, Color, @inline(indexptr, source, source_pos.x - y, source_pos.y + x), @inline(indexptr, surface, pos.x - y, pos.y + x), 2 * y)
+		@inline(memory.copy, Color, @inline(indexptr, source, source_pos.x - y, source_pos.y - x), @inline(indexptr, surface, pos.x - y, pos.y - x), 2 * y)
+	}
+
 	return
 }
\ No newline at end of file
diff --git a/sysdata/libraries/stn/src/math.hb b/sysdata/libraries/stn/src/math.hb
index 563e9c3..7835cae 100644
--- a/sysdata/libraries/stn/src/math.hb
+++ b/sysdata/libraries/stn/src/math.hb
@@ -41,11 +41,11 @@ sin_i := fn(theta_deg: int, amplitude: int): int {
 	quadrant := theta / 90
 	theta = theta % 90
 
-	sign := 1 - ((quadrant & 2) >> 1) * 2
+	sign := @as(int, 1) - ((quadrant & 2) >> 1) * 2
 	complement := quadrant & 1
 
 	index := theta * (1 - complement) + (90 - theta) * complement
-	sin_value := SIN_TABLE[index] * sign
+	sin_value := SIN_TABLE[@intcast(index)] * sign
 
 	return (sin_value * amplitude + 5000) / 10000
 }
diff --git a/sysdata/programs/render_example/src/examples/cube.hb b/sysdata/programs/render_example/src/examples/cube.hb
index 0318b98..20e5e6d 100644
--- a/sysdata/programs/render_example/src/examples/cube.hb
+++ b/sysdata/programs/render_example/src/examples/cube.hb
@@ -5,7 +5,7 @@ example := fn(): void {
 	screen := render.init(true)
 	loop {
 		render.clear(screen, render.black)
-		render.put_tri_filled(screen, .(128, 256), .(512, 512), .(10, 10), .(255, 255, 255, 255))
+		render.put_filled_tri(screen, .(128, 256), .(512, 512), .(10, 10), .(255, 255, 255, 255))
 		render.sync(screen)
 	}
 	return
diff --git a/sysdata/programs/render_example/src/examples/gravity.hb b/sysdata/programs/render_example/src/examples/gravity.hb
new file mode 100644
index 0000000..c213762
--- /dev/null
+++ b/sysdata/programs/render_example/src/examples/gravity.hb
@@ -0,0 +1,26 @@
+.{Vec2, sin_i, cos_i} := @use("../../../../libraries/stn/src/lib.hb").math
+render := @use("../../../../libraries/render/src/lib.hb")
+
+able_bmp := @embed("./assets/able.bmp")
+mini_bmp := @embed("./assets/mini.bmp")
+
+example := fn(): void {
+	able := render.image.surface_from_bmp(@bitcast(&able_bmp))
+	mini := render.image.surface_from_bmp(@bitcast(&mini_bmp))
+
+	angle := @as(int, 0)
+
+	screen := render.init(true)
+
+	loop {
+		render.clear(screen, render.black)
+		render.put_filled_circle(screen, .(screen.width / 2, screen.height / 2), 128, render.light_yellow)
+		render.put_circle(screen, .(screen.width / 2, screen.height / 2), 256, render.light_blue)
+		render.put_textured_circle(screen, able, .(able.width / 2, able.height / 2), .(screen.width / 2 + @intcast(sin_i(angle, @as(int, 256))), screen.height / 2 + @intcast(cos_i(angle, @as(int, 256)))), able.width / 2 - 1)
+		render.put_textured_circle(screen, mini, .(mini.width / 2, mini.height / 2), .(screen.width / 2 + @intcast(sin_i(angle + 180, @as(int, 256))), screen.height / 2 + @intcast(cos_i(angle + 180, @as(int, 256)))), mini.width / 2 - 1)
+		render.sync(screen)
+
+		angle += 1
+	}
+	return
+}
\ No newline at end of file
diff --git a/sysdata/programs/render_example/src/main.hb b/sysdata/programs/render_example/src/main.hb
index 8f2d2c0..2495e15 100644
--- a/sysdata/programs/render_example/src/main.hb
+++ b/sysdata/programs/render_example/src/main.hb
@@ -1,3 +1,3 @@
-.{example} := @use("./examples/cube.hb")
+.{example} := @use("./examples/gravity.hb")
 
 main := example
\ No newline at end of file
diff --git a/sysdata/system_config.toml b/sysdata/system_config.toml
index 6515647..6e3318b 100644
--- a/sysdata/system_config.toml
+++ b/sysdata/system_config.toml
@@ -26,17 +26,17 @@ resolution = "1600x900x24"
 # [boot.limine.ableos.modules.diskio_driver]
 # path = "boot:///diskio_driver.hbf"
 
-# [boot.limine.ableos.modules.render_example]
-# path = "boot:///render_example.hbf"
+[boot.limine.ableos.modules.render_example]
+path = "boot:///render_example.hbf"
 
 # [boot.limine.ableos.modules.serial_driver_test]
 # path = "boot:///serial_driver_test.hbf"
 
-[boot.limine.ableos.modules.horizon]
-path = "boot:///horizon.hbf"
+# [boot.limine.ableos.modules.horizon]
+# path = "boot:///horizon.hbf"
 
-[boot.limine.ableos.modules.horizon_testing_program]
-path = "boot:///horizon_testing_program.hbf"
+# [boot.limine.ableos.modules.horizon_testing_program]
+# path = "boot:///horizon_testing_program.hbf"
 
 # [boot.limine.ableos.modules.dt_buffer_test]
 # path = "boot:///dt_buffer_test.hbf"