reimplement fb_driver as software render interface. sufficiently jank double buffering implementation waiting on an intelligent design.

sysdata/libraries/render/README.md

@@ -0,0 +1,9 @@
+Rendering interface for SVGA and Software renderers
+
+# TODO:
+
+- SVGA Driver
+  - needs pci driver
+  - needs init (requiring program)
+- Double Buffer mode for Software renderer
+  - needs init (requiring program)

sysdata/libraries/render/src/lib.hb

@@ -0,0 +1,43 @@
+svga := @use("rel:svga.hb")
+software := @use("rel:software.hb")
+
+default := software
+
+init := default.init
+
+// Colours
+Color := default.Color
+white := default.white
+black := default.black
+gray := default.gray
+red := default.red
+green := default.green
+yellow := default.yellow
+blue := default.blue
+magenta := default.magenta
+cyan := default.cyan
+light_gray := default.light_gray
+light_red := default.light_red
+light_green := default.light_green
+light_yellow := default.light_yellow
+light_blue := default.light_blue
+light_magenta := default.light_magenta
+light_cyan := default.light_cyan
+
+// Drawing
+put_pixel := default.put_pixel
+put_rect := default.put_rect
+put_filled_rect := default.put_filled_rect
+put_line := default.put_line
+clear := default.clear
+
+// Display
+screen_width := default.screen_width
+screen_height := default.screen_height
+set_screen_height := default.set_screen_height
+set_screen_width := default.set_screen_width
+sync := default.sync
+
+// Math
+UVec2 := struct {x: uint, y: uint}
+IVec2 := struct {x: int, y: int}

sysdata/libraries/render/src/software.hb

@@ -0,0 +1,199 @@
+.{log, math, memory, buffer} := @use("../../stn/src/lib.hb");
+.{IVec2} := @use("rel:lib.hb")
+
+Color := struct {b: u8, g: u8, r: u8, a: u8}
+white := Color.(255, 255, 255, 255)
+black := Color.(0, 0, 0, 255)
+gray := Color.(127, 127, 127, 255)
+red := Color.(0, 0, 205, 255)
+green := Color.(0, 205, 0, 255)
+yellow := Color.(0, 205, 205, 255)
+blue := Color.(205, 0, 0, 255)
+magenta := Color.(205, 0, 205, 255)
+cyan := Color.(205, 205, 0, 255)
+light_gray := Color.(229, 229, 229, 255)
+light_red := Color.(0, 0, 255, 255)
+light_green := Color.(0, 255, 0, 255)
+light_yellow := Color.(0, 255, 255, 255)
+light_blue := Color.(255, 0, 0, 255)
+light_magenta := Color.(255, 0, 255, 255)
+light_cyan := Color.(255, 255, 0, 255)
+
+fb_width := 1024
+fb_height := 768
+fb_pixels := fb_width * fb_height
+fb_bytes := fb_pixels << 2
+copy_pixels := math.min(0x1800, fb_bytes) >> 2
+partitions := fb_pixels / copy_pixels
+total_pages := 1 + fb_bytes >> 12
+
+front_buffer := @as(^Color, @bitcast(0xFFFF8000C0000000))
+// jank back buffer time, im sure nothing will go wrong
+// will be removed as soon as i can figure out a fast way of doing runtime global scope
+back_buffer := @as(^Color, @bitcast(0xFFFF8000C0000000 + fb_bytes))
+// create_back_buffer := fn(): ^Color {
+// 	if total_pages <= 0xFF {
+// 		return @bitcast(@inline(memory.request_page, total_pages))
+// 	}
+// 	ptr := @inline(memory.request_page, 255)
+// 	remaining := total_pages - 0xFF
+// 	loop if remaining <= 0 break else {
+// 		if remaining < 0xFF {
+// 			memory.request_page(remaining)
+// 		} else {
+// 			memory.request_page(0xFF)
+// 		}
+// 		remaining -= 0xFF
+// 	}
+// 	return @bitcast(ptr)
+// }
+
+clear := fn(color: Color): void {
+	n := 0
+	loop if n >= copy_pixels break else {
+		*(back_buffer + n) = color
+		n += 1
+	}
+	n = 1
+	loop if n >= partitions break else {
+		*(@as(^[Color; copy_pixels], @bitcast(back_buffer)) + n) = *@as(^[Color; copy_pixels], @bitcast(back_buffer))
+		n += 1
+	}
+	return
+}
+
+sync := fn(): void {
+	n := 0
+	loop if n >= partitions break else {
+		*(@as(^[Color; copy_pixels], @bitcast(front_buffer)) + n) = *(@as(^[Color; copy_pixels], @bitcast(back_buffer)) + n)
+		n += 1
+	}
+	return
+}
+
+screen_width := fn(): int {
+	return fb_width
+}
+
+screen_height := fn(): int {
+	return fb_height
+}
+
+screenidx := fn(x: int, y: int): int {
+	return x + fb_width * y
+}
+
+put_pixel := fn(pos: IVec2, color: Color): void {
+	*(back_buffer + @inline(screenidx, pos.x, pos.y)) = color
+	return
+}
+
+put_filled_rect := fn(pos: IVec2, tr: IVec2, color: Color): void {
+	x := pos.x
+	y := pos.y
+	end := pos + tr
+	loop if x == end.x break else {
+		loop if y == end.y break else {
+			*(back_buffer + @inline(screenidx, x, y)) = color
+			y += 1
+		}
+		x += 1
+		y = pos.y
+	}
+	return
+}
+
+put_rect := fn(pos: IVec2, tr: IVec2, color: Color): void {
+	x := pos.x
+	y := pos.y
+	end := pos + tr
+	loop if y == end.y break else {
+		*(back_buffer + @inline(screenidx, x, y)) = color;
+		*(back_buffer + @inline(screenidx, x + tr.x, y)) = color
+		y += 1
+	}
+	y = pos.y
+	loop if x == end.x break else {
+		*(back_buffer + @inline(screenidx, x, y)) = color;
+		*(back_buffer + @inline(screenidx, x, y + tr.y)) = color
+		x += 1
+	}
+	return
+}
+
+put_line_low := fn(p0: IVec2, p1: IVec2, color: Color): void {
+	dx := p1.x - p0.x
+	dy := p1.y - p0.y
+	yi := 1
+	if dy < 0 {
+		yi = 0 - 1
+		dy = 0 - dy
+	}
+	D := 2 * dy - dx
+	y := p0.y
+	x := p0.x
+	loop if x == p1.x break else {
+		*(back_buffer + @inline(screenidx, x, y)) = color
+		if D > 0 {
+			y += yi
+			D += 2 * (dy - dx)
+		} else {
+			D += 2 * dy
+		}
+		x += 1
+	}
+	return
+}
+
+put_line_high := fn(p0: IVec2, p1: IVec2, color: Color): void {
+	dx := p1.x - p0.x
+	dy := p1.y - p0.y
+	xi := 1
+	if dy < 0 {
+		xi = 0 - 1
+		dx = 0 - dx
+	}
+	D := 2 * dx - dy
+	x := p0.x
+	y := p0.y
+	loop if y == p1.y break else {
+		*(back_buffer + @inline(screenidx, x, y)) = color
+		if D > 0 {
+			x += xi
+			D += 2 * (dx - dy)
+		} else {
+			D += 2 * dx
+		}
+		y += 1
+	}
+	return
+}
+
+put_line := fn(p0: IVec2, p1: IVec2, color: Color): void {
+	if @inline(math.abs, p1.y - p0.y) < @inline(math.abs, p1.x - p0.x) {
+		if p0.x > p1.x {
+			@inline(put_line_low, p1, p0, color)
+		} else {
+			@inline(put_line_low, p0, p1, color)
+		}
+	} else {
+		if p0.y > p1.y {
+			@inline(put_line_high, p1, p0, color)
+		} else {
+			@inline(put_line_high, p0, p1, color)
+		}
+	}
+	return
+}
+
+set_screen_height := fn(new: int): void {
+	return
+}
+
+set_screen_width := fn(new: int): void {
+	return
+}
+
+init := fn(): void {
+	return
+}

sysdata/libraries/render/src/svga.hb

@@ -0,0 +1,68 @@
+.{log, math} := @use("../../stn/src/lib.hb");
+.{IVec2} := @use("rel:lib.hb")
+
+Color := struct {b: u8, g: u8, r: u8, a: u8}
+white := Color.(255, 255, 255, 255)
+black := Color.(0, 0, 0, 255)
+gray := Color.(127, 127, 127, 255)
+red := Color.(0, 0, 205, 255)
+green := Color.(0, 205, 0, 255)
+yellow := Color.(0, 205, 205, 255)
+blue := Color.(205, 0, 0, 255)
+magenta := Color.(205, 0, 205, 255)
+cyan := Color.(205, 205, 0, 255)
+light_gray := Color.(229, 229, 229, 255)
+light_red := Color.(0, 0, 255, 255)
+light_green := Color.(0, 255, 0, 255)
+light_yellow := Color.(0, 255, 255, 255)
+light_blue := Color.(255, 0, 0, 255)
+light_magenta := Color.(255, 0, 255, 255)
+light_cyan := Color.(255, 255, 0, 255)
+
+clear := fn(color: Color): void {
+	return
+}
+
+screen_width := fn(): int {
+	return 0
+}
+
+screen_height := fn(): int {
+	return 0
+}
+
+put_pixel := fn(position: IVec2, color: Color): void {
+	return
+}
+
+put_filled_rect := fn(pos: IVec2, tr: IVec2, color: Color): void {
+	return
+}
+
+put_rect := fn(pos: IVec2, tr: IVec2, color: Color): void {
+	return
+}
+
+put_line_low := fn(p0: IVec2, p1: IVec2, color: Color): void {
+	return
+}
+// do not use, use line() instead
+put_line_high := fn(p0: IVec2, p1: IVec2, color: Color): void {
+	return
+}
+
+put_line := fn(p0: IVec2, p1: IVec2, color: Color): void {
+	return
+}
+
+set_screen_height := fn(new: int): void {
+	return
+}
+
+set_screen_width := fn(new: int): void {
+	return
+}
+
+init := fn(): void {
+	return
+}

sysdata/libraries/stn/src/math.hb

@@ -1,14 +1,15 @@
-SIZEOF_INT := 31
+shift := 31
 
+// following only work for: int
 abs := fn(x: int): int {
-	mask := x >> SIZEOF_INT
+	mask := x >> shift
 	return (x ^ mask) - mask
 }
 min := fn(a: int, b: int): int {
 	c := a - b
-	return b + (c & c >> SIZEOF_INT)
+	return b + (c & c >> shift)
 }
-max := fn(a: int, b: int): int {
+max := fn(a: int, b: uint): int {
 	c := a - b
-	return a - (c & c >> SIZEOF_INT)
+	return a - (c & c >> shift)
 }

sysdata/libraries/stn/src/random.hb

@@ -1,8 +1,7 @@
-integer := fn(min: int, max: int): int {
+integer := fn(): int {
-	rng := @eca(int, 3, 4)
+	return @eca(int, 3, 4)
-
+}
-	if min != 0 | max != 0 {
+
-		return rng % (max - min + 1) + min
+integer_range := fn(min: int, max: int): int {
-	}
+	return @eca(int, 3, 4) % (max - min + 1) + min
-	return rng
 }

sysdata/programs/fb_driver/README.md

@@ -1,2 +0,0 @@
-# Framebuffer Driver
-A simple framebuffer driver.

sysdata/programs/fb_driver/UNTESTED_FUNCTIONS

@@ -1,7 +0,0 @@
-color.blend
-
-lib.composite
-lib.screen2rect
-lib.rect2screen
-
-draw.tri_line

sysdata/programs/fb_driver/src/color.hb

@@ -1,27 +0,0 @@
-ColorBGRA := struct {b: u8, g: u8, r: u8, a: u8}
-
-/* ALL the colo(u)rs you will ever need.
-   they dont work though, cause hblang bug (reg id leaked, again) */
-WHITE := ColorBGRA.{b: 255, g: 255, r: 255, a: 255}
-BLACK := ColorBGRA.{b: 0, g: 0, r: 0, a: 255}
-GRAY := ColorBGRA.{b: 127, g: 127, r: 127, a: 255}
-RED := ColorBGRA.{b: 0, g: 0, r: 205, a: 255}
-GREEN := ColorBGRA.{b: 0, g: 205, r: 0, a: 255}
-YELLOW := ColorBGRA.{b: 0, g: 205, r: 205, a: 255}
-BLUE := ColorBGRA.{b: 205, g: 0, r: 0, a: 255}
-MAGENTA := ColorBGRA.{b: 205, g: 0, r: 205, a: 255}
-CYAN := ColorBGRA.{b: 205, g: 205, r: 0, a: 255}
-LIGHTGRAY := ColorBGRA.{b: 229, g: 229, r: 229, a: 255}
-LIGHTRED := ColorBGRA.{b: 0, g: 0, r: 255, a: 255}
-LIGHTGREEN := ColorBGRA.{b: 0, g: 255, r: 0, a: 255}
-LIGHTYELLOW := ColorBGRA.{b: 0, g: 255, r: 255, a: 255}
-LIGHTBLUE := ColorBGRA.{b: 255, g: 0, r: 0, a: 255}
-LIGHTMAGENTA := ColorBGRA.{b: 255, g: 0, r: 255, a: 255}
-LIGHTCYAN := ColorBGRA.{b: 255, g: 255, r: 0, a: 255}
-
-// i have no clue if this works. please don't me ask how it works. -koniifer
-blend := fn(fg: ColorBGRA, bg: ColorBGRA): ColorBGRA {
-	s := fg + bg
-	m := s - ((fg ^ bg) & 0x1010100) & 0x1010100
-	return (m >> 8 | 0x1000000 * (s < fg)) * 0xFF | s - m
-}

sysdata/programs/fb_driver/src/draw.hb

@@ -1,113 +0,0 @@
-.{draw_pixel, screenidx, Transform, Point, Rect, Buffer, FB_WIDTH} := @use("rel:lib.hb");
-.{math} := @use("../../../libraries/stn/src/lib.hb");
-.{ColorBGRA} := @use("rel:color.hb")
-
-/* draws a filled rectangle to the screen
-   will be optimised later */
-rect_fill := fn(buffer: Buffer, pos: Point, tr: Transform, color: ColorBGRA): void {
-	n := 0
-	loop if n == tr.height * tr.width break else {
-		*(buffer.write + @inline(screenidx, .(n % tr.width + pos.x, n / tr.width + pos.y))) = color
-		n += 1
-	}
-	return
-}
-/* draws a wireframe rectangle to the screen
-   will also be optimised later */
-rect_line := fn(buffer: Buffer, pos: Point, tr: Transform, color: ColorBGRA, thickness: int): void {
-	t := 0
-	y := 0
-	x := 0
-	loop if t == thickness break else {
-		y = pos.y
-		x = pos.x
-		loop if y == pos.y + tr.height break else {
-			*(buffer.write + @inline(screenidx, .(pos.x + t, y))) = color;
-			*(buffer.write + @inline(screenidx, .(pos.x + tr.width - t, y))) = color
-			y += 1
-		}
-		loop if x == pos.x + tr.width break else {
-			*(buffer.write + @inline(screenidx, .(x, pos.y + t))) = color;
-			*(buffer.write + @inline(screenidx, .(x, pos.y + tr.height - t))) = color
-			x += 1
-		}
-		t += 1
-	}
-	return
-}
-
-// do not use, use line() instead
-line_low := fn(buffer: Buffer, p0: Point, p1: Point, color: ColorBGRA): void {
-	dx := p1.x - p0.x
-	dy := p1.y - p0.y
-	yi := 1
-	if dy < 0 {
-		yi = 0 - 1
-		dy = 0 - dy
-	}
-	D := 2 * dy - dx
-	y := p0.y
-	x := p0.x
-	loop if x == p1.x break else {
-		*(buffer.write + @inline(screenidx, .(x, y))) = color
-		if D > 0 {
-			y += yi
-			D += 2 * (dy - dx)
-		} else {
-			D += 2 * dy
-		}
-		x += 1
-	}
-	return
-}
-// do not use, use line() instead
-line_high := fn(buffer: Buffer, p0: Point, p1: Point, color: ColorBGRA): void {
-	dx := p1.x - p0.x
-	dy := p1.y - p0.y
-	xi := 1
-	if dy < 0 {
-		xi = 0 - 1
-		dx = 0 - dx
-	}
-	D := 2 * dx - dy
-	x := p0.x
-	y := p0.y
-	loop if y == p1.y break else {
-		*(buffer.write + @inline(screenidx, .(x, y))) = color
-		if D > 0 {
-			x += xi
-			D += 2 * (dx - dy)
-		} else {
-			D += 2 * dx
-		}
-		y += 1
-	}
-	return
-}
-
-/* implementation of Bresenham's line algorithm
-   TODO: thickness, might need better math library */
-line := fn(buffer: Buffer, p0: Point, p1: Point, color: ColorBGRA, thickness: int): void {
-	if @inline(math.abs, p1.y - p0.y) < @inline(math.abs, p1.x - p0.x) {
-		if p0.x > p1.x {
-			@inline(line_low, buffer, p1, p0, color)
-		} else {
-			@inline(line_low, buffer, p0, p1, color)
-		}
-	} else {
-		if p0.y > p1.y {
-			@inline(line_high, buffer, p1, p0, color)
-		} else {
-			@inline(line_high, buffer, p0, p1, color)
-		}
-	}
-	return
-}
-
-// theoretically draws a wireframe polygon to the screen. untested.
-tri_line := fn(buffer: Buffer, p0: Point, p1: Point, p2: Point, color: ColorBGRA, thickness: int): void {
-	line(buffer, p0, p1, color, thickness)
-	line(buffer, p1, p2, color, thickness)
-	line(buffer, p2, p0, color, thickness)
-	return
-}

sysdata/programs/fb_driver/src/examples/amogus.hb

@@ -1,26 +0,0 @@
-.{rect_line} := @use("../draw.hb");
-.{present, create_buffer, clear} := @use("../lib.hb")
-
-/* expected result:
-   the impostor travels left and loops around the screen */
-
-example := fn(): void {
-	// Creates a back buffer, which we write to, to avoid screen flickering
-	buffer := create_buffer()
-	x := 0
-	loop {
-		// draw all our shapes to the back buffer
-		rect_line(buffer, .(200 - x, 80), .(430, 380), .(0, 0, 255, 0), 1)
-		rect_line(buffer, .(630 - x, 120), .(120, 300), .(0, 0, 255, 0), 1)
-		rect_line(buffer, .(200 - x, 460), .(160, 270), .(0, 0, 255, 0), 1)
-		rect_line(buffer, .(470 - x, 460), .(160, 270), .(0, 0, 255, 0), 1)
-		rect_line(buffer, .(140 - x, 140), .(340, 250), .(255, 255, 0, 0), 1)
-		/* push the back buffer to the front buffer
-		   this displays our image to the screen */
-		present(buffer)
-		// erase our old image
-		clear(buffer, .(0, 0, 0, 0))
-		x += 1
-	}
-	return
-}

sysdata/programs/fb_driver/src/examples/buffers.hb

@@ -1,19 +0,0 @@
-.{front_buffer_ptr, front_buffer_copy, get_front_buffer, Buffer} := @use("../lib.hb");
-
-example := fn(): void {
-	// you can get the raw frontbuffer pointer using
-	raw_buffer := front_buffer_ptr
-	// this buffer is the one that you write individual pixels to
-
-	// you can gete the copy frontbuffer pointer using
-	copy_buffer := front_buffer_copy
-	/* this buffer is used for massive writing
-       operations by taking advantage of
-       static copying */
-
-	// you can construct a buffer like so
-	buffer := Buffer.{write: raw_buffer, copy: copy_buffer}
-	// this is the operation that get_front_buffer does
-	same_buffer := get_front_buffer()
-	return
-}

sysdata/programs/fb_driver/src/examples/colors.hb

@@ -1,27 +0,0 @@
-.{clear, create_buffer, present} := @use("../lib.hb");
-.{ColorBGRA} := @use("../color.hb")
-
-/* expected result:
-   the screen fades from green to cyan
-   then wraps back to green
-   note that this may happen too fast for you to notice... */
-
-example := fn(): void {
-	// creates a back buffer, which we write to, to avoid screen flickering
-	buffer := create_buffer()
-	color := ColorBGRA.(0, 255, 0, 255)
-	/* have to explicitly say 0 is a u8, or we do something crazy to the colors.
-	   looks like a compiler bug */
-	n := @as(u8, 0) - 1
-	loop {
-		clear(buffer, color)
-		present(buffer)
-		/* because for some reason just comparing doesnt work.
-		   also looks like a compiler bug */
-		if (color.b & 255) == 255 | (color.b & 255) == 0 {
-			n = 0 - n
-		}
-		color.b += n
-	}
-	return
-}

sysdata/programs/fb_driver/src/examples/lines.hb

@@ -1,25 +0,0 @@
-.{line} := @use("../draw.hb");
-.{clear, create_buffer, present, FB_WIDTH, FB_HEIGHT, Point} := @use("../lib.hb")
-
-/* expected result:
-   a 3d-looking blue set of lines
-   created on a blue background */
-
-example := fn(): void {
-	// creates a back buffer, which we write to, to avoid screen flickering
-	buffer := create_buffer()
-	// fill the screen in blue
-	clear(buffer, .(100, 50, 0, 255))
-	p0 := Point.(0, 0 - 1)
-	p1 := Point.(0, FB_HEIGHT - 1)
-	loop if p0.y >= FB_HEIGHT break else {
-		// draw a line between p0 and p1
-		line(buffer, p0, p1, .(255, 180, 100, 255), 3)
-		p0.y += FB_HEIGHT >> 6
-		p1.x += FB_WIDTH >> 6
-	}
-	/* push the back buffer to the front buffer
-	   this displays our image to the screen */
-	present(buffer)
-	return
-}

sysdata/programs/fb_driver/src/examples/random.hb

@@ -1,17 +0,0 @@
-.{clear, get_front_buffer, screenidx} := @use("../lib.hb");
-.{ColorBGRA} := @use("../color.hb");
-.{random} := @use("../../../../libraries/stn/src/lib.hb")
-
-example := fn(): void {
-	buffer := get_front_buffer()
-	clear(buffer)
-	loop {
-		x := random.integer(0, 1024)
-		y := random.integer(0, 768)
-		r := random.integer(0, 255)
-		g := random.integer(0, 75)
-		b := random.integer(0, 155);
-		*(buffer.write + @inline(screenidx, .(x, y))) = ColorBGRA.(b, g, r, 255)
-	}
-	return
-}

sysdata/programs/fb_driver/src/examples/square.hb

@@ -1,32 +0,0 @@
-.{rect_line} := @use("../draw.hb");
-.{clear, create_buffer, present, Point, FB_HEIGHT, FB_WIDTH} := @use("../lib.hb")
-
-/* expected result:
-   the white outline of a square bounces around the screen */
-
-example := fn(): void {
-	// creates a back buffer, which we write to, to avoid screen flickering
-	buffer := create_buffer()
-	vel := Point.{x: 1, y: 1}
-	pos := Point.{x: 100, y: 100}
-	loop {
-		// draw the square at our current position
-		rect_line(buffer, pos, .(100, 100), .(255, 255, 255, 255), 3)
-		/* push the back buffer to the front buffer
-		   this displays our image to the screen */
-		present(buffer)
-		// erase our old image
-		clear(buffer, .(0, 0, 0, 0))
-
-		// bounce the square if it touches the screen edges
-		if pos.x == 0 | pos.x == FB_WIDTH - 100 {
-			vel.x = 0 - vel.x
-		}
-		if pos.y == 0 | pos.y == FB_HEIGHT - 100 {
-			vel.y = 0 - vel.y
-		}
-
-		pos += vel
-	}
-	return
-}

sysdata/programs/fb_driver/src/examples/strobe.hb

@@ -1,20 +0,0 @@
-.{clear, create_buffer, present} := @use("../lib.hb")
-
-/* expected result: (EPILEPSY WARNING)
-   the screen rapidly flashes red then black */
-
-example := fn(): void {
-	// creates a back buffer, which we write to, to avoid screen flickering
-	buffer := create_buffer()
-	loop {
-		// screen go red
-		clear(buffer, .(0, 0, 255, 0))
-		// show the red
-		present(buffer)
-		// screen go black
-		clear(buffer, .(0, 255, 255, 0))
-		// show the black
-		present(buffer)
-	}
-	return
-}

sysdata/programs/fb_driver/src/lib.hb

@@ -1,88 +0,0 @@
-.{memory, math} := @use("../../../libraries/stn/src/lib.hb");
-.{ColorBGRA, blend} := @use("rel:color.hb")
-
-FB_WIDTH := 1024
-FB_HEIGHT := 768
-FB_PIXELS := FB_WIDTH * FB_HEIGHT
-FB_BYTES := FB_PIXELS << 2
-// actual enforced max copy size is 0xFFFF, but this was faster
-MAX_COPY_SIZE := 0x1800
-COPY_PIXELS := math.min(MAX_COPY_SIZE, FB_BYTES) >> 2
-PARTITIONS := FB_PIXELS / COPY_PIXELS
-TOTAL_PAGES := 1 + FB_BYTES >> 12
-
-Buffer := struct {write: ^ColorBGRA, copy: ^[ColorBGRA; COPY_PIXELS]}
-Point := struct {x: int, y: int}
-Transform := struct {width: int, height: int}
-
-front_buffer_ptr := @as(^ColorBGRA, @bitcast(0xFFFF8000C0000000))
-front_buffer_copy := @as(^[ColorBGRA; COPY_PIXELS], @bitcast(front_buffer_ptr))
-
-get_front_buffer := fn(): Buffer {
-	// trying to return front_buffer_ptr or front_buffer_copy causes reg id leak
-	buffer := Buffer.{write: front_buffer_ptr, copy: front_buffer_copy}
-	return buffer
-}
-/* this is separate to create_raw_buffer because returning a Buffer from 
-   create_raw_buffer causes reg id leak */
-create_buffer := fn(): Buffer {
-	ptr := @inline(create_raw_buffer)
-	buffer := Buffer.{write: ptr, copy: @as(^[ColorBGRA; COPY_PIXELS], @bitcast(ptr))}
-	return buffer
-}
-create_raw_buffer := fn(): ^ColorBGRA {
-	if TOTAL_PAGES <= 0xFF {
-		return @bitcast(@inline(memory.request_page, TOTAL_PAGES))
-	}
-	ptr := @inline(memory.request_page, 255)
-	remaining := TOTAL_PAGES - 0xFF
-	loop if remaining <= 0 break else {
-		if remaining < 0xFF {
-			memory.request_page(remaining)
-		} else {
-			memory.request_page(0xFF)
-		}
-		remaining -= 0xFF
-	}
-	return @bitcast(ptr)
-}
-// sets the buffer to the color. very fast.
-clear := fn(buffer: Buffer, color: ColorBGRA): void {
-	n := 0
-	// write the first pixel chunk
-	loop if n >= COPY_PIXELS break else {
-		*(buffer.write + n) = color
-		n += 1
-	}
-	n = 1
-	// copy that pixel chunk through the buffer, taking advantage of memory copying
-	loop if n >= PARTITIONS break else {
-		*(buffer.copy + n) = *buffer.copy
-		n += 1
-	}
-	return
-}
-// only required to be called when using a back buffer. if using single-buffered rendering, do not call this.
-present := fn(buffer: Buffer): void {
-	n := 0
-	// copy chunks of the read buffer to the front buffer
-	loop if n >= PARTITIONS break else {
-		*(front_buffer_copy + n) = *(buffer.copy + n)
-		n += 1
-	}
-	return
-}
-// composites the contents of buffer1 into buffer2, accounting for alpha transparency
-// i dont know if it works. i have not tested it. it probably doesnt work
-composite := fn(buffer1: Buffer, buffer2: Buffer): void {
-	n := 0
-	loop if n == FB_PIXELS break else {
-		bg := *(buffer2.write + n);
-		*(buffer2.write + n) = blend(*(buffer1.write + n), bg)
-		n += 1
-	}
-	return
-}
-screenidx := fn(pos: Point): int {
-	return pos.x + FB_WIDTH * pos.y
-}

sysdata/programs/render_driver/meta.toml

@@ -1,6 +1,6 @@
 [package]
-name = "fb_driver"
+name = "render_driver"
-authors = ["able", "aurlex"]
+authors = ["koniifer"]
 
 [dependants.libraries]
 

sysdata/programs/render_driver/src/main.hb

@@ -0,0 +1,6 @@
+render := @use("../../../libraries/render/src/lib.hb")
+
+main := fn(): void {
+	@inline(render.init)
+	return
+}

sysdata/programs/render_example/meta.toml

@@ -0,0 +1,11 @@
+[package]
+name = "render_example"
+authors = ["koniifer"]
+
+[dependants.libraries]
+
+[dependants.binaries]
+hblang.version = "1.0.0"
+
+[build]
+command = "hblang src/main.hb"

sysdata/programs/render_example/src/examples/amogus.hb

@@ -0,0 +1,19 @@
+render := @use("../../../../libraries/render/src/lib.hb")
+
+/* expected result:
+   the impostor travels left and loops around the screen */
+
+example := fn(): void {
+	x := 0
+	loop {
+		render.put_rect(.(200 - x, 80), .(430, 380), render.red)
+		render.put_rect(.(630 - x, 120), .(120, 300), render.red)
+		render.put_rect(.(200 - x, 460), .(160, 270), render.red)
+		render.put_rect(.(470 - x, 460), .(160, 270), render.red)
+		render.put_rect(.(140 - x, 140), .(340, 250), render.cyan)
+		render.sync()
+		render.clear(render.black)
+		x += 1
+	}
+	return
+}

sysdata/programs/render_example/src/examples/colors.hb

@@ -0,0 +1,20 @@
+render := @use("../../../../libraries/render/src/lib.hb")
+
+/* expected result:
+   the screen fades from cyan to green
+   then wraps back to cyan
+   note that this may happen too fast for you to notice... */
+
+example := fn(): void {
+	color := render.light_cyan
+	n := @as(u8, 1)
+	loop {
+		render.clear(color)
+		render.sync()
+		if (color.b & 255) == 255 | (color.b & 255) == 0 {
+			n = 0 - n
+		}
+		color.b += n
+	}
+	return
+}

sysdata/programs/render_example/src/examples/lines.hb

@@ -0,0 +1,20 @@
+render := @use("../../../../libraries/render/src/lib.hb")
+
+/* expected result:
+   a 3d-looking set of blue lines
+   created on a blue background */
+
+example := fn(): void {
+	render.clear(.(100, 50, 0, 255))
+	width := render.screen_width()
+	height := render.screen_height()
+	p0 := render.IVec2.(0, 0 - 1)
+	p1 := render.IVec2.(0, height - 1)
+	loop if p0.y >= height break else {
+		render.put_line(p0, p1, .(255, 180, 100, 255))
+		p0.y += height >> 6
+		p1.x += width >> 6
+	}
+	render.sync()
+	return
+}

sysdata/programs/render_example/src/examples/random.hb

@@ -0,0 +1,16 @@
+.{random} := @use("../../../../libraries/stn/src/lib.hb")
+render := @use("../../../../libraries/render/src/lib.hb")
+
+example := fn(): void {
+	render.clear(render.black)
+	loop {
+		x := random.integer_range(0, 1024)
+		y := random.integer_range(0, 768)
+		r := random.integer_range(0, 255)
+		g := random.integer_range(0, 75)
+		b := random.integer_range(0, 155)
+		render.put_pixel(.(x, y), .(b, g, r, 255))
+		render.sync()
+	}
+	return
+}

sysdata/programs/render_example/src/examples/square.hb

@@ -0,0 +1,26 @@
+render := @use("../../../../libraries/render/src/lib.hb")
+
+/* expected result:
+   the white outline of a square bounces around the screen */
+
+example := fn(): void {
+	vel := render.IVec2.(1, 1)
+	pos := render.IVec2.(100, 100)
+	width := render.screen_width()
+	height := render.screen_height()
+	loop {
+		render.put_rect(pos, .(100, 100), render.white)
+		render.sync()
+		render.clear(render.black)
+
+		if pos.x == 0 | pos.x == width - 100 {
+			vel.x = 0 - vel.x
+		}
+		if pos.y == 0 | pos.y == height - 100 {
+			vel.y = 0 - vel.y
+		}
+
+		pos += vel
+	}
+	return
+}

sysdata/programs/render_example/src/examples/strobe.hb

@@ -0,0 +1,14 @@
+render := @use("../../../../libraries/render/src/lib.hb")
+
+/* expected result: (EPILEPSY WARNING)
+   the screen rapidly flashes red then black */
+
+example := fn(): void {
+	loop {
+		render.clear(render.red)
+		render.sync()
+		render.clear(render.yellow)
+		render.sync()
+	}
+	return
+}

sysdata/programs/render_example/src/main.hb

@@ -1,6 +1,6 @@
 .{example} := @use("./examples/lines.hb")
 
-main := fn(): int {
+main := fn(): void {
 	@inline(example)
-	return 0
+	return
 }

sysdata/system_config.toml

@@ -20,14 +20,17 @@ resolution = "1024x768x24"
 # [boot.limine.ableos.modules.tests]
 # path = "boot:///tests.hbf"
 
+[boot.limine.ableos.modules.0render_driver]
+path = "boot:///render_driver.hbf"
+
 [boot.limine.ableos.modules.a_serial_driver]
 path = "boot:///a_serial_driver.hbf"
 
 [boot.limine.ableos.modules.diskio_driver]
 path = "boot:///diskio_driver.hbf"
 
-[boot.limine.ableos.modules.fb_driver]
+[boot.limine.ableos.modules.render_example]
-path = "boot:///fb_driver.hbf"
+path = "boot:///render_example.hbf"
 
 [boot.limine.ableos.modules.serial_driver_test]
 path = "boot:///serial_driver_test.hbf"