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Backdrop Path + Cybersteel (#23)

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Co-authored-by: Zachary Levy <zachary@sunforge.is>
Reviewed-on: #23
This commit was merged in pull request #23.
This commit is contained in:
Zachary Levy
2026-05-01 05:43:10 +00:00
parent e36229a3ef
commit 5317b8f142
66 changed files with 5806 additions and 2427 deletions
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draw/tess/tess.odin
+20 -11
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@@ -4,6 +4,7 @@ import "core:math"
import draw ".."
//INTERNAL
SMOOTH_CIRCLE_ERROR_RATE :: 0.1
auto_segments :: proc(radius: f32, arc_degrees: f32) -> int {
@@ -22,11 +23,18 @@ auto_segments :: proc(radius: f32, arc_degrees: f32) -> int {
// Color is premultiplied: the tessellated fragment shader passes it through directly
// and the blend state is ONE, ONE_MINUS_SRC_ALPHA.
solid_vertex :: proc(position: draw.Vec2, color: draw.Color) -> draw.Vertex {
return draw.Vertex{position = position, color = draw.premultiply_color(color)}
//INTERNAL
solid_vertex :: proc(position: draw.Vec2, color: draw.Color) -> draw.Vertex_2D {
return draw.Vertex_2D{position = position, color = draw.premultiply_color(color)}
}
emit_rectangle :: proc(x, y, width, height: f32, color: draw.Color, vertices: []draw.Vertex, offset: int) {
//INTERNAL
emit_rectangle :: proc(
x, y, width, height: f32,
color: draw.Color,
vertices: []draw.Vertex_2D,
offset: int,
) {
vertices[offset + 0] = solid_vertex({x, y}, color)
vertices[offset + 1] = solid_vertex({x + width, y}, color)
vertices[offset + 2] = solid_vertex({x + width, y + height}, color)
@@ -35,11 +43,12 @@ emit_rectangle :: proc(x, y, width, height: f32, color: draw.Color, vertices: []
vertices[offset + 5] = solid_vertex({x, y + height}, color)
}
//INTERNAL
extrude_line :: proc(
start, end_pos: draw.Vec2,
thickness: f32,
color: draw.Color,
vertices: []draw.Vertex,
vertices: []draw.Vertex_2D,
offset: int,
) -> int {
direction := end_pos - start
@@ -69,7 +78,7 @@ extrude_line :: proc(
// ----- Public draw -----
pixel :: proc(layer: ^draw.Layer, pos: draw.Vec2, color: draw.Color) {
vertices: [6]draw.Vertex
vertices: [6]draw.Vertex_2D
emit_rectangle(pos[0], pos[1], 1, 1, color, vertices[:], 0)
draw.prepare_shape(layer, vertices[:])
}
@@ -82,7 +91,7 @@ triangle :: proc(
rotation: f32 = 0,
) {
if !draw.needs_transform(origin, rotation) {
vertices := [3]draw.Vertex{solid_vertex(v1, color), solid_vertex(v2, color), solid_vertex(v3, color)}
vertices := [3]draw.Vertex_2D{solid_vertex(v1, color), solid_vertex(v2, color), solid_vertex(v3, color)}
draw.prepare_shape(layer, vertices[:])
return
}
@@ -91,7 +100,7 @@ triangle :: proc(
local_v1 := v1 - bounds_min
local_v2 := v2 - bounds_min
local_v3 := v3 - bounds_min
vertices := [3]draw.Vertex {
vertices := [3]draw.Vertex_2D {
solid_vertex(draw.apply_transform(transform, local_v1), color),
solid_vertex(draw.apply_transform(transform, local_v2), color),
solid_vertex(draw.apply_transform(transform, local_v3), color),
@@ -170,7 +179,7 @@ triangle_aa :: proc(
transparent := draw.BLANK
// 3 interior + 6 × 3 edge-quad = 21 vertices
vertices: [21]draw.Vertex
vertices: [21]draw.Vertex_2D
// Interior triangle
vertices[0] = solid_vertex(p0, color)
@@ -213,7 +222,7 @@ triangle_lines :: proc(
rotation: f32 = 0,
temp_allocator := context.temp_allocator,
) {
vertices := make([]draw.Vertex, 18, temp_allocator)
vertices := make([]draw.Vertex_2D, 18, temp_allocator)
defer delete(vertices, temp_allocator)
write_offset := 0
@@ -249,7 +258,7 @@ triangle_fan :: proc(
triangle_count := len(points) - 2
vertex_count := triangle_count * 3
vertices := make([]draw.Vertex, vertex_count, temp_allocator)
vertices := make([]draw.Vertex_2D, vertex_count, temp_allocator)
defer delete(vertices, temp_allocator)
if !draw.needs_transform(origin, rotation) {
@@ -289,7 +298,7 @@ triangle_strip :: proc(
triangle_count := len(points) - 2
vertex_count := triangle_count * 3
vertices := make([]draw.Vertex, vertex_count, temp_allocator)
vertices := make([]draw.Vertex_2D, vertex_count, temp_allocator)
defer delete(vertices, temp_allocator)
if !draw.needs_transform(origin, rotation) {