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Added backdrop effects pipeline (blur)

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This commit is contained in:
Zachary Levy
2026-04-28 22:12:25 -07:00
parent ff29dbd92f
commit 16989cbb71
29 changed files with 2931 additions and 415 deletions
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draw/examples/textures.odin
+164 -28
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@@ -9,7 +9,7 @@ import cyber "../cybersteel"
textures :: proc() {
if !sdl.Init({.VIDEO}) do os.exit(1)
window := sdl.CreateWindow("Textures", 800, 600, {.HIGH_PIXEL_DENSITY})
window := sdl.CreateWindow("Textures", 800, 750, {.HIGH_PIXEL_DENSITY})
gpu := sdl.CreateGPUDevice(draw.PLATFORM_SHADER_FORMAT, true, nil)
if !sdl.ClaimWindowForGPUDevice(gpu, window) do os.exit(1)
if !draw.init(gpu, window) do os.exit(1)
@@ -88,10 +88,10 @@ textures :: proc() {
}
spin_angle += 1
base_layer := draw.begin({width = 800, height = 600})
base_layer := draw.begin({width = 800, height = 750})
// Background
draw.rectangle(base_layer, {0, 0, 800, 600}, draw.Color{30, 30, 30, 255})
draw.rectangle(base_layer, {0, 0, 800, 750}, draw.Color{30, 30, 30, 255})
//----- Row 1: Sampler presets (y=30) ----------------------------------
@@ -103,11 +103,15 @@ textures :: proc() {
COL4 :: f32(480)
// Nearest (sharp pixel edges)
draw.rectangle_texture(
draw.rectangle(
base_layer,
{COL1, ROW1_Y, ITEM_SIZE, ITEM_SIZE},
checker_texture,
sampler = .Nearest_Clamp,
draw.Texture_Fill {
id = checker_texture,
tint = draw.WHITE,
uv_rect = {0, 0, 1, 1},
sampler = .Nearest_Clamp,
},
)
draw.text(
base_layer,
@@ -119,11 +123,15 @@ textures :: proc() {
)
// Linear (bilinear blur)
draw.rectangle_texture(
draw.rectangle(
base_layer,
{COL2, ROW1_Y, ITEM_SIZE, ITEM_SIZE},
checker_texture,
sampler = .Linear_Clamp,
draw.Texture_Fill {
id = checker_texture,
tint = draw.WHITE,
uv_rect = {0, 0, 1, 1},
sampler = .Linear_Clamp,
},
)
draw.text(
base_layer,
@@ -135,12 +143,15 @@ textures :: proc() {
)
// Tiled (4x repeat)
draw.rectangle_texture(
draw.rectangle(
base_layer,
{COL3, ROW1_Y, ITEM_SIZE, ITEM_SIZE},
checker_texture,
sampler = .Nearest_Repeat,
uv_rect = {0, 0, 4, 4},
draw.Texture_Fill {
id = checker_texture,
tint = draw.WHITE,
uv_rect = {0, 0, 4, 4},
sampler = .Nearest_Repeat,
},
)
draw.text(
base_layer,
@@ -157,11 +168,10 @@ textures :: proc() {
// QR code (RGBA texture with baked colors, nearest sampling)
draw.rectangle(base_layer, {COL1, ROW2_Y, ITEM_SIZE, ITEM_SIZE}, draw.Color{255, 255, 255, 255}) // white bg
draw.rectangle_texture(
draw.rectangle(
base_layer,
{COL1, ROW2_Y, ITEM_SIZE, ITEM_SIZE},
qr_texture,
sampler = .Nearest_Clamp,
draw.Texture_Fill{id = qr_texture, tint = draw.WHITE, uv_rect = {0, 0, 1, 1}, sampler = .Nearest_Clamp},
)
draw.text(
base_layer,
@@ -173,11 +183,15 @@ textures :: proc() {
)
// Rounded corners
draw.rectangle_texture(
draw.rectangle(
base_layer,
{COL2, ROW2_Y, ITEM_SIZE, ITEM_SIZE},
checker_texture,
sampler = .Nearest_Clamp,
draw.Texture_Fill {
id = checker_texture,
tint = draw.WHITE,
uv_rect = {0, 0, 1, 1},
sampler = .Nearest_Clamp,
},
radii = draw.uniform_radii({COL2, ROW2_Y, ITEM_SIZE, ITEM_SIZE}, 0.3),
)
draw.text(
@@ -191,11 +205,15 @@ textures :: proc() {
// Rotating
rot_rect := draw.Rectangle{COL3, ROW2_Y, ITEM_SIZE, ITEM_SIZE}
draw.rectangle_texture(
draw.rectangle(
base_layer,
rot_rect,
checker_texture,
sampler = .Nearest_Clamp,
draw.Texture_Fill {
id = checker_texture,
tint = draw.WHITE,
uv_rect = {0, 0, 1, 1},
sampler = .Nearest_Clamp,
},
origin = draw.center_of(rot_rect),
rotation = spin_angle,
)
@@ -216,7 +234,11 @@ textures :: proc() {
// Stretch
uv_s, sampler_s, inner_s := draw.fit_params(.Stretch, {COL1, ROW3_Y, FIT_SIZE, FIT_SIZE}, stripe_texture)
draw.rectangle(base_layer, {COL1, ROW3_Y, FIT_SIZE, FIT_SIZE}, draw.Color{60, 60, 60, 255}) // bg
draw.rectangle_texture(base_layer, inner_s, stripe_texture, uv_rect = uv_s, sampler = sampler_s)
draw.rectangle(
base_layer,
inner_s,
draw.Texture_Fill{id = stripe_texture, tint = draw.WHITE, uv_rect = uv_s, sampler = sampler_s},
)
draw.text(
base_layer,
"Stretch",
@@ -229,7 +251,11 @@ textures :: proc() {
// Fill (center-crop)
uv_f, sampler_f, inner_f := draw.fit_params(.Fill, {COL2, ROW3_Y, FIT_SIZE, FIT_SIZE}, stripe_texture)
draw.rectangle(base_layer, {COL2, ROW3_Y, FIT_SIZE, FIT_SIZE}, draw.Color{60, 60, 60, 255})
draw.rectangle_texture(base_layer, inner_f, stripe_texture, uv_rect = uv_f, sampler = sampler_f)
draw.rectangle(
base_layer,
inner_f,
draw.Texture_Fill{id = stripe_texture, tint = draw.WHITE, uv_rect = uv_f, sampler = sampler_f},
)
draw.text(
base_layer,
"Fill",
@@ -242,7 +268,11 @@ textures :: proc() {
// Fit (letterbox)
uv_ft, sampler_ft, inner_ft := draw.fit_params(.Fit, {COL3, ROW3_Y, FIT_SIZE, FIT_SIZE}, stripe_texture)
draw.rectangle(base_layer, {COL3, ROW3_Y, FIT_SIZE, FIT_SIZE}, draw.Color{60, 60, 60, 255}) // visible margin bg
draw.rectangle_texture(base_layer, inner_ft, stripe_texture, uv_rect = uv_ft, sampler = sampler_ft)
draw.rectangle(
base_layer,
inner_ft,
draw.Texture_Fill{id = stripe_texture, tint = draw.WHITE, uv_rect = uv_ft, sampler = sampler_ft},
)
draw.text(
base_layer,
"Fit",
@@ -253,11 +283,15 @@ textures :: proc() {
)
// Per-corner radii
draw.rectangle_texture(
draw.rectangle(
base_layer,
{COL4, ROW3_Y, FIT_SIZE, FIT_SIZE},
checker_texture,
sampler = .Nearest_Clamp,
draw.Texture_Fill {
id = checker_texture,
tint = draw.WHITE,
uv_rect = {0, 0, 1, 1},
sampler = .Nearest_Clamp,
},
radii = {20, 0, 20, 0},
)
draw.text(
@@ -269,6 +303,108 @@ textures :: proc() {
color = draw.WHITE,
)
//----- Row 4: Textured shapes (y=520) ----------------------------------
ROW4_Y :: f32(520)
SHAPE_SIZE :: f32(80)
SHAPE_GAP :: f32(30)
SHAPE_COL1 :: f32(30)
SHAPE_COL2 :: SHAPE_COL1 + SHAPE_SIZE + SHAPE_GAP
SHAPE_COL3 :: SHAPE_COL2 + SHAPE_SIZE + SHAPE_GAP
SHAPE_COL4 :: SHAPE_COL3 + SHAPE_SIZE + SHAPE_GAP
SHAPE_COL5 :: SHAPE_COL4 + SHAPE_SIZE + SHAPE_GAP
checker_fill := draw.Texture_Fill {
id = checker_texture,
tint = draw.WHITE,
uv_rect = {0, 0, 1, 1},
sampler = .Nearest_Clamp,
}
// Textured circle
draw.circle(
base_layer,
{SHAPE_COL1 + SHAPE_SIZE / 2, ROW4_Y + SHAPE_SIZE / 2},
SHAPE_SIZE / 2,
checker_fill,
)
draw.text(
base_layer,
"Circle",
{SHAPE_COL1, ROW4_Y + SHAPE_SIZE + LABEL_OFFSET},
PLEX_SANS_REGULAR,
FONT_SIZE,
color = draw.WHITE,
)
// Textured ellipse
draw.ellipse(
base_layer,
{SHAPE_COL2 + SHAPE_SIZE / 2, ROW4_Y + SHAPE_SIZE / 2},
SHAPE_SIZE / 2,
SHAPE_SIZE / 3,
checker_fill,
)
draw.text(
base_layer,
"Ellipse",
{SHAPE_COL2, ROW4_Y + SHAPE_SIZE + LABEL_OFFSET},
PLEX_SANS_REGULAR,
FONT_SIZE,
color = draw.WHITE,
)
// Textured polygon (hexagon)
draw.polygon(
base_layer,
{SHAPE_COL3 + SHAPE_SIZE / 2, ROW4_Y + SHAPE_SIZE / 2},
6,
SHAPE_SIZE / 2,
checker_fill,
)
draw.text(
base_layer,
"Polygon",
{SHAPE_COL3, ROW4_Y + SHAPE_SIZE + LABEL_OFFSET},
PLEX_SANS_REGULAR,
FONT_SIZE,
color = draw.WHITE,
)
// Textured ring
draw.ring(
base_layer,
{SHAPE_COL4 + SHAPE_SIZE / 2, ROW4_Y + SHAPE_SIZE / 2},
SHAPE_SIZE / 4,
SHAPE_SIZE / 2,
checker_fill,
)
draw.text(
base_layer,
"Ring",
{SHAPE_COL4, ROW4_Y + SHAPE_SIZE + LABEL_OFFSET},
PLEX_SANS_REGULAR,
FONT_SIZE,
color = draw.WHITE,
)
// Textured line (capsule)
draw.line(
base_layer,
{SHAPE_COL5, ROW4_Y + SHAPE_SIZE / 2},
{SHAPE_COL5 + SHAPE_SIZE, ROW4_Y + SHAPE_SIZE / 2},
checker_fill,
thickness = 20,
)
draw.text(
base_layer,
"Line",
{SHAPE_COL5, ROW4_Y + SHAPE_SIZE + LABEL_OFFSET},
PLEX_SANS_REGULAR,
FONT_SIZE,
color = draw.WHITE,
)
draw.end(gpu, window)
}
}