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Added draw package as renderer focused on mixed use layout / 2D / 3D scene applications #7

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zack merged 6 commits from draw into master 2026-04-20 20:14:57 +00:00
Conversation 0 Commits 6 Files Changed 26 +551 -512
5 changed files with 551 additions and 512 deletions
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167
draw/draw.odin
View File

@@ -36,14 +36,14 @@ BLUE :: Color{0, 0, 255, 255}
BLANK :: Color{0, 0, 0, 0}
// Convert clay.Color ([4]c.float in 0–255 range) to Color.
color_from_clay :: proc(cc: clay.Color) -> Color {
return Color{u8(cc[0]), u8(cc[1]), u8(cc[2]), u8(cc[3])}
color_from_clay :: proc(clay_color: clay.Color) -> Color {
return Color{u8(clay_color[0]), u8(clay_color[1]), u8(clay_color[2]), u8(clay_color[3])}
}
// Convert Color to [4]f32 in 0.0–1.0 range. Useful for SDL interop (e.g. clear color).
color_to_f32 :: proc(c: Color) -> [4]f32 {
color_to_f32 :: proc(color: Color) -> [4]f32 {
INV :: 1.0 / 255.0
return {f32(c[0]) * INV, f32(c[1]) * INV, f32(c[2]) * INV, f32(c[3]) * INV}
return {f32(color[0]) * INV, f32(color[1]) * INV, f32(color[2]) * INV, f32(color[3]) * INV}
}
// ---------------------------------------------------------------------------------------------------------------------
@@ -53,8 +53,8 @@ color_to_f32 :: proc(c: Color) -> [4]f32 {
Rectangle :: struct {
x: f32,
y: f32,
w: f32,
h: f32,
width: f32,
height: f32,
}
Sub_Batch_Kind :: enum u8 {
@@ -102,7 +102,7 @@ Global :: struct {
tmp_primitives: [dynamic]Primitive,
tmp_sub_batches: [dynamic]Sub_Batch,
tmp_uncached_text: [dynamic]^sdl_ttf.Text, // Uncached TTF_Text objects to destroy after end()
clay_mem: [^]u8,
clay_memory: [^]u8,
msaa_texture: ^sdl.GPUTexture,
curr_layer_index: uint,
max_layers: int,
@@ -114,8 +114,8 @@ Global :: struct {
max_primitives: int,
max_sub_batches: int,
dpi_scaling: f32,
msaa_w: u32,
msaa_h: u32,
msaa_width: u32,
msaa_height: u32,
sample_count: sdl.GPUSampleCount,
clay_z_index: i16,
cleared: bool,
@@ -174,13 +174,13 @@ init :: proc(
tmp_uncached_text = make([dynamic]^sdl_ttf.Text, 0, 16, allocator = allocator),
odin_context = odin_context,
dpi_scaling = sdl.GetWindowDisplayScale(window),
clay_mem = make([^]u8, min_memory_size, allocator = allocator),
clay_memory = make([^]u8, min_memory_size, allocator = allocator),
sample_count = resolved_sample_count,
pipeline_2d_base = pipeline,
text_cache = text_cache,
}
log.debug("Window DPI scaling:", GLOB.dpi_scaling)
arena := clay.CreateArenaWithCapacityAndMemory(min_memory_size, GLOB.clay_mem)
arena := clay.CreateArenaWithCapacityAndMemory(min_memory_size, GLOB.clay_memory)
window_width, window_height: c.int
sdl.GetWindowSize(window, &window_width, &window_height)
@@ -219,9 +219,9 @@ destroy :: proc(device: ^sdl.GPUDevice, allocator := context.allocator) {
delete(GLOB.tmp_text_batches)
delete(GLOB.tmp_primitives)
delete(GLOB.tmp_sub_batches)
for t in GLOB.tmp_uncached_text do sdl_ttf.DestroyText(t)
for ttf_text in GLOB.tmp_uncached_text do sdl_ttf.DestroyText(ttf_text)
delete(GLOB.tmp_uncached_text)
free(GLOB.clay_mem, allocator)
free(GLOB.clay_memory, allocator)
if GLOB.msaa_texture != nil {
sdl.ReleaseGPUTexture(device, GLOB.msaa_texture)
}
@@ -235,7 +235,7 @@ clear_global :: proc() {
GLOB.clay_z_index = 0
GLOB.cleared = false
// Destroy uncached TTF_Text objects from the previous frame (after end() has submitted draw data)
for t in GLOB.tmp_uncached_text do sdl_ttf.DestroyText(t)
for ttf_text in GLOB.tmp_uncached_text do sdl_ttf.DestroyText(ttf_text)
clear(&GLOB.tmp_uncached_text)
clear(&GLOB.layers)
clear(&GLOB.scissors)
@@ -260,12 +260,12 @@ measure_text_clay :: proc "c" (
context = GLOB.odin_context
text := string(text.chars[:text.length])
c_text := strings.clone_to_cstring(text, context.temp_allocator)
w, h: c.int
if !sdl_ttf.GetStringSize(get_font(config.fontId, config.fontSize), c_text, 0, &w, &h) {
width, height: c.int
if !sdl_ttf.GetStringSize(get_font(config.fontId, config.fontSize), c_text, 0, &width, &height) {
log.panicf("Failed to measure text: %s", sdl.GetError())
}
return clay.Dimensions{width = f32(w) / GLOB.dpi_scaling, height = f32(h) / GLOB.dpi_scaling}
return clay.Dimensions{width = f32(width) / GLOB.dpi_scaling, height = f32(height) / GLOB.dpi_scaling}
}
// ---------------------------------------------------------------------------------------------------------------------
@@ -282,8 +282,8 @@ begin :: proc(bounds: Rectangle) -> ^Layer {
bounds = sdl.Rect {
x = i32(bounds.x * GLOB.dpi_scaling),
y = i32(bounds.y * GLOB.dpi_scaling),
w = i32(bounds.w * GLOB.dpi_scaling),
h = i32(bounds.h * GLOB.dpi_scaling),
w = i32(bounds.width * GLOB.dpi_scaling),
h = i32(bounds.height * GLOB.dpi_scaling),
},
}
append(&GLOB.scissors, scissor)
@@ -313,8 +313,8 @@ new_layer :: proc(prev_layer: ^Layer, bounds: Rectangle) -> ^Layer {
bounds = sdl.Rect {
x = i32(bounds.x * GLOB.dpi_scaling),
y = i32(bounds.y * GLOB.dpi_scaling),
w = i32(bounds.w * GLOB.dpi_scaling),
h = i32(bounds.h * GLOB.dpi_scaling),
w = i32(bounds.width * GLOB.dpi_scaling),
h = i32(bounds.height * GLOB.dpi_scaling),
},
}
append(&GLOB.scissors, scissor)
@@ -344,8 +344,8 @@ prepare_sdf_primitive :: proc(layer: ^Layer, prim: Primitive) {
// Submit a text element to the given layer for rendering.
// Copies SDL_ttf vertices directly (with baked position) and copies indices for indexed drawing.
prepare_text :: proc(layer: ^Layer, txt: Text) {
data := sdl_ttf.GetGPUTextDrawData(txt.ref)
prepare_text :: proc(layer: ^Layer, text: Text) {
data := sdl_ttf.GetGPUTextDrawData(text.sdl_text)
if data == nil {
return // nil is normal for empty text
}
@@ -363,9 +363,9 @@ prepare_text :: proc(layer: ^Layer, txt: Text) {
append(
&GLOB.tmp_text_verts,
Vertex {
position = {pos.x + txt.position[0] * GLOB.dpi_scaling, -pos.y + txt.position[1] * GLOB.dpi_scaling},
position = {pos.x + text.position[0] * GLOB.dpi_scaling, -pos.y + text.position[1] * GLOB.dpi_scaling},
uv = {uv.x, uv.y},
color = txt.color,
color = text.color,
},
)
}
@@ -396,8 +396,8 @@ prepare_text :: proc(layer: ^Layer, txt: Text) {
// Used by the high-level `text` proc when rotation or a non-zero origin is specified.
// NOTE: xform must be in physical (DPI-scaled) pixel space — the caller pre-scales
// pos and origin by GLOB.dpi_scaling before building the transform.
prepare_text_transformed :: proc(layer: ^Layer, txt: Text, xform: Transform_2D) {
data := sdl_ttf.GetGPUTextDrawData(txt.ref)
prepare_text_transformed :: proc(layer: ^Layer, text: Text, transform: Transform_2D) {
data := sdl_ttf.GetGPUTextDrawData(text.sdl_text)
if data == nil {
return
}
@@ -416,7 +416,7 @@ prepare_text_transformed :: proc(layer: ^Layer, txt: Text, xform: Transform_2D)
// so we apply directly — no per-vertex DPI divide/multiply.
append(
&GLOB.tmp_text_verts,
Vertex{position = apply_transform(xform, {pos.x, -pos.y}), uv = {uv.x, uv.y}, color = txt.color},
Vertex{position = apply_transform(transform, {pos.x, -pos.y}), uv = {uv.x, uv.y}, color = text.color},
)
}
@@ -503,8 +503,8 @@ prepare_clay_batch :: proc(
bounds := Rectangle {
x = render_command.boundingBox.x + layer.bounds.x,
y = render_command.boundingBox.y + layer.bounds.y,
w = render_command.boundingBox.width,
h = render_command.boundingBox.height,
width = render_command.boundingBox.width,
height = render_command.boundingBox.height,
}
if render_command.zIndex > GLOB.clay_z_index {
@@ -532,9 +532,7 @@ prepare_clay_batch :: proc(
prepare_text(layer, Text{sdl_text, {bounds.x, bounds.y}, color_from_clay(render_data.textColor)})
case clay.RenderCommandType.Image:
case clay.RenderCommandType.ScissorStart:
if bounds.w == 0 || bounds.h == 0 {
continue
}
if bounds.width == 0 || bounds.height == 0 do continue
curr_scissor := &GLOB.scissors[layer.scissor_start + layer.scissor_len - 1]
@@ -545,8 +543,8 @@ prepare_clay_batch :: proc(
bounds = sdl.Rect {
c.int(bounds.x * GLOB.dpi_scaling),
c.int(bounds.y * GLOB.dpi_scaling),
c.int(bounds.w * GLOB.dpi_scaling),
c.int(bounds.h * GLOB.dpi_scaling),
c.int(bounds.width * GLOB.dpi_scaling),
c.int(bounds.height * GLOB.dpi_scaling),
},
}
append(&GLOB.scissors, new)
@@ -555,8 +553,8 @@ prepare_clay_batch :: proc(
curr_scissor.bounds = sdl.Rect {
c.int(bounds.x * GLOB.dpi_scaling),
c.int(bounds.y * GLOB.dpi_scaling),
c.int(bounds.w * GLOB.dpi_scaling),
c.int(bounds.h * GLOB.dpi_scaling),
c.int(bounds.width * GLOB.dpi_scaling),
c.int(bounds.height * GLOB.dpi_scaling),
}
}
case clay.RenderCommandType.ScissorEnd:
@@ -575,13 +573,13 @@ prepare_clay_batch :: proc(
render_data := render_command.renderData.border
cr := render_data.cornerRadius
color := color_from_clay(render_data.color)
thick := f32(render_data.width.top)
thickness := f32(render_data.width.top)
radii := [4]f32{cr.topLeft, cr.topRight, cr.bottomRight, cr.bottomLeft}
if radii == {0, 0, 0, 0} {
rectangle_lines(layer, bounds, color, thick)
rectangle_lines(layer, bounds, color, thickness)
} else {
rectangle_corners_lines(layer, bounds, radii, color, thick)
rectangle_corners_lines(layer, bounds, radii, color, thickness)
}
case clay.RenderCommandType.Custom:
}
@@ -601,8 +599,8 @@ end :: proc(device: ^sdl.GPUDevice, window: ^sdl.Window, clear_color: Color = BL
sdl.EndGPUCopyPass(copy_pass)
swapchain_texture: ^sdl.GPUTexture
w, h: u32
if !sdl.WaitAndAcquireGPUSwapchainTexture(cmd_buffer, window, &swapchain_texture, &w, &h) {
width, height: u32
if !sdl.WaitAndAcquireGPUSwapchainTexture(cmd_buffer, window, &swapchain_texture, &width, &height) {
log.panicf("Failed to acquire swapchain texture: %s", sdl.GetError())
}
@@ -618,16 +616,16 @@ end :: proc(device: ^sdl.GPUDevice, window: ^sdl.Window, clear_color: Color = BL
render_texture := swapchain_texture
if use_msaa {
ensure_msaa_texture(device, sdl.GetGPUSwapchainTextureFormat(device, window), w, h)
ensure_msaa_texture(device, sdl.GetGPUSwapchainTextureFormat(device, window), width, height)
render_texture = GLOB.msaa_texture
}
cc := color_to_f32(clear_color)
clear_color_f32 := color_to_f32(clear_color)
// Draw layers. One render pass per layer; sub-batches draw in submission order within each scissor.
for &layer, index in GLOB.layers {
log.debug("Drawing layer", index)
draw_layer(device, window, cmd_buffer, render_texture, w, h, cc, &layer)
draw_layer(device, window, cmd_buffer, render_texture, width, height, clear_color_f32, &layer)
}
// Resolve MSAA render texture to the swapchain.
@@ -659,15 +657,15 @@ end :: proc(device: ^sdl.GPUDevice, window: ^sdl.Window, clear_color: Color = BL
max_sample_count :: proc(device: ^sdl.GPUDevice, window: ^sdl.Window) -> sdl.GPUSampleCount {
format := sdl.GetGPUSwapchainTextureFormat(device, window)
counts := [?]sdl.GPUSampleCount{._8, ._4, ._2}
for sc in counts {
if sdl.GPUTextureSupportsSampleCount(device, format, sc) do return sc
for count in counts {
if sdl.GPUTextureSupportsSampleCount(device, format, count) do return count
}
return ._1
}
@(private = "file")
ensure_msaa_texture :: proc(device: ^sdl.GPUDevice, format: sdl.GPUTextureFormat, w, h: u32) {
if GLOB.msaa_texture != nil && GLOB.msaa_w == w && GLOB.msaa_h == h {
ensure_msaa_texture :: proc(device: ^sdl.GPUDevice, format: sdl.GPUTextureFormat, width, height: u32) {
if GLOB.msaa_texture != nil && GLOB.msaa_width == width && GLOB.msaa_height == height {
return
}
if GLOB.msaa_texture != nil {
@@ -679,18 +677,18 @@ ensure_msaa_texture :: proc(device: ^sdl.GPUDevice, format: sdl.GPUTextureFormat
type = .D2,
format = format,
usage = {.COLOR_TARGET},
width = w,
height = h,
width = width,
height = height,
layer_count_or_depth = 1,
num_levels = 1,
sample_count = GLOB.sample_count,
},
)
if GLOB.msaa_texture == nil {
log.panicf("Failed to create MSAA texture (%dx%d): %s", w, h, sdl.GetError())
log.panicf("Failed to create MSAA texture (%dx%d): %s", width, height, sdl.GetError())
}
GLOB.msaa_w = w
GLOB.msaa_h = h
GLOB.msaa_width = width
GLOB.msaa_height = height
}
// ---------------------------------------------------------------------------------------------------------------------
@@ -718,9 +716,21 @@ Vertex_Uniforms :: struct {
}
// Push projection, dpi scale, and rendering mode as a single uniform block (slot 0).
push_globals :: proc(cmd_buffer: ^sdl.GPUCommandBuffer, w: f32, h: f32, mode: Draw_Mode = .Tessellated) {
push_globals :: proc(
cmd_buffer: ^sdl.GPUCommandBuffer,
width: f32,
height: f32,
mode: Draw_Mode = .Tessellated,
) {
globals := Vertex_Uniforms {
projection = ortho_rh(left = 0.0, top = 0.0, right = f32(w), bottom = f32(h), near = -1.0, far = 1.0),
projection = ortho_rh(
left = 0.0,
top = 0.0,
right = f32(width),
bottom = f32(height),
near = -1.0,
far = 1.0,
),
scale = GLOB.dpi_scaling,
mode = mode,
}
@@ -818,23 +828,26 @@ Transform_2D :: struct {
// origin – pivot point in local space (measured from the shape's natural reference point).
// rotation_deg – rotation in degrees, counter-clockwise.
//
build_pivot_rot :: proc(pos: [2]f32, origin: [2]f32, rotation_deg: f32) -> Transform_2D {
rad := math.to_radians(rotation_deg)
c := math.cos(rad)
s := math.sin(rad)
build_pivot_rotation :: proc(position: [2]f32, origin: [2]f32, rotation_deg: f32) -> Transform_2D {
radians := math.to_radians(rotation_deg)
cos_angle := math.cos(radians)
sin_angle := math.sin(radians)
return Transform_2D {
m00 = c,
m01 = -s,
m10 = s,
m11 = c,
tx = pos.x - (c * origin.x - s * origin.y),
ty = pos.y - (s * origin.x + c * origin.y),
m00 = cos_angle,
m01 = -sin_angle,
m10 = sin_angle,
m11 = cos_angle,
tx = position.x - (cos_angle * origin.x - sin_angle * origin.y),
ty = position.y - (sin_angle * origin.x + cos_angle * origin.y),
}
}
// Apply the transform to a local-space point, producing a world-space point.
apply_transform :: #force_inline proc(t: Transform_2D, p: [2]f32) -> [2]f32 {
return {t.m00 * p.x + t.m01 * p.y + t.tx, t.m10 * p.x + t.m11 * p.y + t.ty}
apply_transform :: #force_inline proc(transform: Transform_2D, point: [2]f32) -> [2]f32 {
return {
transform.m00 * point.x + transform.m01 * point.y + transform.tx,
transform.m10 * point.x + transform.m11 * point.y + transform.ty,
}
}
// Fast-path check callers use BEFORE building a transform.
@@ -849,55 +862,55 @@ needs_transform :: #force_inline proc(origin: [2]f32, rotation: f32) -> bool {
// ---------------------------------------------------------------------------------------------------------------------
center_of :: proc {
center_of_rect,
center_of_rectangle,
center_of_triangle,
center_of_text,
}
top_left_of :: proc {
top_left_of_rect,
top_left_of_rectangle,
top_left_of_triangle,
top_left_of_text,
}
top_of :: proc {
top_of_rect,
top_of_rectangle,
top_of_triangle,
top_of_text,
}
top_right_of :: proc {
top_right_of_rect,
top_right_of_rectangle,
top_right_of_triangle,
top_right_of_text,
}
left_of :: proc {
left_of_rect,
left_of_rectangle,
left_of_triangle,
left_of_text,
}
right_of :: proc {
right_of_rect,
right_of_rectangle,
right_of_triangle,
right_of_text,
}
bottom_left_of :: proc {
bottom_left_of_rect,
bottom_left_of_rectangle,
bottom_left_of_triangle,
bottom_left_of_text,
}
bottom_of :: proc {
bottom_of_rect,
bottom_of_rectangle,
bottom_of_triangle,
bottom_of_text,
}
bottom_right_of :: proc {
bottom_right_of_rect,
bottom_right_of_rectangle,
bottom_right_of_triangle,
bottom_right_of_text,
}

16
draw/examples/hellope.odin
View File

@@ -24,14 +24,14 @@ hellope_shapes :: proc() {
if ev.type == .QUIT do return
}
spin_angle += 1
base_layer := draw.begin({w = 500, h = 500})
base_layer := draw.begin({width = 500, height = 500})
// Background
draw.rectangle(base_layer, {0, 0, 500, 500}, {40, 40, 40, 255})
// ----- Shapes without rotation (existing demo) -----
draw.rectangle(base_layer, {20, 20, 200, 120}, {80, 120, 200, 255})
draw.rectangle_lines(base_layer, {20, 20, 200, 120}, draw.WHITE, thick = 2)
draw.rectangle_lines(base_layer, {20, 20, 200, 120}, draw.WHITE, thickness = 2)
draw.rectangle(base_layer, {240, 20, 240, 120}, {200, 80, 80, 255}, roundness = 0.3)
draw.rectangle_gradient(
base_layer,
@@ -57,7 +57,7 @@ hellope_shapes :: proc() {
base_layer,
rect,
draw.WHITE,
thick = 2,
thickness = 2,
origin = draw.center_of(rect),
rotation = spin_angle,
)
@@ -100,8 +100,8 @@ hellope_shapes :: proc() {
)
// Polygon rotating around its center (already had rotation; now with origin for orbit)
draw.poly(base_layer, {460, 450}, 6, 30, {180, 100, 220, 255}, rotation = spin_angle)
draw.poly_lines(base_layer, {460, 450}, 6, 30, draw.WHITE, rotation = spin_angle, thick = 2)
draw.polygon(base_layer, {460, 450}, 6, 30, {180, 100, 220, 255}, rotation = spin_angle)
draw.polygon_lines(base_layer, {460, 450}, 6, 30, draw.WHITE, rotation = spin_angle, thickness = 2)
draw.end(gpu, window)
}
@@ -125,7 +125,7 @@ hellope_text :: proc() {
if ev.type == .QUIT do return
}
spin_angle += 0.5
base_layer := draw.begin({w = 600, h = 600})
base_layer := draw.begin({width = 600, height = 600})
// Grey background
draw.rectangle(base_layer, {0, 0, 600, 600}, {127, 127, 127, 255})
@@ -217,8 +217,8 @@ hellope_clay :: proc() {
for sdl.PollEvent(&ev) {
if ev.type == .QUIT do return
}
base_layer := draw.begin({w = 500, h = 500})
clay.SetLayoutDimensions({width = base_layer.bounds.w, height = base_layer.bounds.h})
base_layer := draw.begin({width = 500, height = 500})
clay.SetLayoutDimensions({width = base_layer.bounds.width, height = base_layer.bounds.height})
clay.BeginLayout()
if clay.UI()(
{

136
draw/pipeline_2d_base.odin
View File

@@ -240,31 +240,31 @@ create_pipeline_2d_base :: proc(
}
// Create vertex buffer
vb_ok: bool
pipeline.vertex_buffer, vb_ok = create_buffer(
vert_buf_ok: bool
pipeline.vertex_buffer, vert_buf_ok = create_buffer(
device,
size_of(Vertex) * BUFFER_INIT_SIZE,
sdl.GPUBufferUsageFlags{.VERTEX},
)
if !vb_ok do return pipeline, false
if !vert_buf_ok do return pipeline, false
// Create index buffer (used by text)
ib_ok: bool
pipeline.index_buffer, ib_ok = create_buffer(
idx_buf_ok: bool
pipeline.index_buffer, idx_buf_ok = create_buffer(
device,
size_of(c.int) * BUFFER_INIT_SIZE,
sdl.GPUBufferUsageFlags{.INDEX},
)
if !ib_ok do return pipeline, false
if !idx_buf_ok do return pipeline, false
// Create primitive storage buffer (used by SDF instanced drawing)
pb_ok: bool
pipeline.primitive_buffer, pb_ok = create_buffer(
prim_buf_ok: bool
pipeline.primitive_buffer, prim_buf_ok = create_buffer(
device,
size_of(Primitive) * BUFFER_INIT_SIZE,
sdl.GPUBufferUsageFlags{.GRAPHICS_STORAGE_READ},
)
if !pb_ok do return pipeline, false
if !prim_buf_ok do return pipeline, false
// Create static 6-vertex unit quad buffer (two triangles, TRIANGLELIST)
pipeline.unit_quad_buffer = sdl.CreateGPUBuffer(
@@ -297,23 +297,23 @@ create_pipeline_2d_base :: proc(
// Upload white pixel and unit quad data in a single command buffer
white_pixel := [4]u8{255, 255, 255, 255}
white_transfer := sdl.CreateGPUTransferBuffer(
white_transfer_buf := sdl.CreateGPUTransferBuffer(
device,
sdl.GPUTransferBufferCreateInfo{usage = .UPLOAD, size = size_of(white_pixel)},
)
if white_transfer == nil {
if white_transfer_buf == nil {
log.errorf("Failed to create white pixel transfer buffer: %s", sdl.GetError())
return pipeline, false
}
defer sdl.ReleaseGPUTransferBuffer(device, white_transfer)
defer sdl.ReleaseGPUTransferBuffer(device, white_transfer_buf)
white_ptr := sdl.MapGPUTransferBuffer(device, white_transfer, false)
white_ptr := sdl.MapGPUTransferBuffer(device, white_transfer_buf, false)
if white_ptr == nil {
log.errorf("Failed to map white pixel transfer buffer: %s", sdl.GetError())
return pipeline, false
}
mem.copy(white_ptr, &white_pixel, size_of(white_pixel))
sdl.UnmapGPUTransferBuffer(device, white_transfer)
sdl.UnmapGPUTransferBuffer(device, white_transfer_buf)
quad_verts := [6]Vertex {
{position = {0, 0}},
@@ -323,47 +323,47 @@ create_pipeline_2d_base :: proc(
{position = {1, 0}},
{position = {1, 1}},
}
quad_transfer := sdl.CreateGPUTransferBuffer(
quad_transfer_buf := sdl.CreateGPUTransferBuffer(
device,
sdl.GPUTransferBufferCreateInfo{usage = .UPLOAD, size = size_of(quad_verts)},
)
if quad_transfer == nil {
if quad_transfer_buf == nil {
log.errorf("Failed to create unit quad transfer buffer: %s", sdl.GetError())
return pipeline, false
}
defer sdl.ReleaseGPUTransferBuffer(device, quad_transfer)
defer sdl.ReleaseGPUTransferBuffer(device, quad_transfer_buf)
quad_ptr := sdl.MapGPUTransferBuffer(device, quad_transfer, false)
quad_ptr := sdl.MapGPUTransferBuffer(device, quad_transfer_buf, false)
if quad_ptr == nil {
log.errorf("Failed to map unit quad transfer buffer: %s", sdl.GetError())
return pipeline, false
}
mem.copy(quad_ptr, &quad_verts, size_of(quad_verts))
sdl.UnmapGPUTransferBuffer(device, quad_transfer)
sdl.UnmapGPUTransferBuffer(device, quad_transfer_buf)
upload_cmd := sdl.AcquireGPUCommandBuffer(device)
if upload_cmd == nil {
upload_cmd_buffer := sdl.AcquireGPUCommandBuffer(device)
if upload_cmd_buffer == nil {
log.errorf("Failed to acquire command buffer for init upload: %s", sdl.GetError())
return pipeline, false
}
upload_pass := sdl.BeginGPUCopyPass(upload_cmd)
upload_pass := sdl.BeginGPUCopyPass(upload_cmd_buffer)
sdl.UploadToGPUTexture(
upload_pass,
sdl.GPUTextureTransferInfo{transfer_buffer = white_transfer},
sdl.GPUTextureTransferInfo{transfer_buffer = white_transfer_buf},
sdl.GPUTextureRegion{texture = pipeline.white_texture, w = 1, h = 1, d = 1},
false,
)
sdl.UploadToGPUBuffer(
upload_pass,
sdl.GPUTransferBufferLocation{transfer_buffer = quad_transfer},
sdl.GPUTransferBufferLocation{transfer_buffer = quad_transfer_buf},
sdl.GPUBufferRegion{buffer = pipeline.unit_quad_buffer, offset = 0, size = size_of(quad_verts)},
false,
)
sdl.EndGPUCopyPass(upload_pass)
if !sdl.SubmitGPUCommandBuffer(upload_cmd) {
if !sdl.SubmitGPUCommandBuffer(upload_cmd_buffer) {
log.errorf("Failed to submit init upload command buffer: %s", sdl.GetError())
return pipeline, false
}
@@ -410,16 +410,16 @@ upload :: proc(device: ^sdl.GPUDevice, pass: ^sdl.GPUCopyPass) {
sdl.GPUBufferUsageFlags{.VERTEX},
)
v_array := sdl.MapGPUTransferBuffer(device, GLOB.pipeline_2d_base.vertex_buffer.transfer, false)
if v_array == nil {
vert_array := sdl.MapGPUTransferBuffer(device, GLOB.pipeline_2d_base.vertex_buffer.transfer, false)
if vert_array == nil {
log.panicf("Failed to map vertex transfer buffer: %s", sdl.GetError())
}
if shape_vert_size > 0 {
mem.copy(v_array, raw_data(GLOB.tmp_shape_verts), int(shape_vert_size))
mem.copy(vert_array, raw_data(GLOB.tmp_shape_verts), int(shape_vert_size))
}
if text_vert_size > 0 {
mem.copy(
rawptr(uintptr(v_array) + uintptr(shape_vert_size)),
rawptr(uintptr(vert_array) + uintptr(shape_vert_size)),
raw_data(GLOB.tmp_text_verts),
int(text_vert_size),
)
@@ -446,11 +446,11 @@ upload :: proc(device: ^sdl.GPUDevice, pass: ^sdl.GPUCopyPass) {
sdl.GPUBufferUsageFlags{.INDEX},
)
i_array := sdl.MapGPUTransferBuffer(device, GLOB.pipeline_2d_base.index_buffer.transfer, false)
if i_array == nil {
idx_array := sdl.MapGPUTransferBuffer(device, GLOB.pipeline_2d_base.index_buffer.transfer, false)
if idx_array == nil {
log.panicf("Failed to map index transfer buffer: %s", sdl.GetError())
}
mem.copy(i_array, raw_data(GLOB.tmp_text_indices), int(index_size))
mem.copy(idx_array, raw_data(GLOB.tmp_text_indices), int(index_size))
sdl.UnmapGPUTransferBuffer(device, GLOB.pipeline_2d_base.index_buffer.transfer)
sdl.UploadToGPUBuffer(
@@ -473,11 +473,11 @@ upload :: proc(device: ^sdl.GPUDevice, pass: ^sdl.GPUCopyPass) {
sdl.GPUBufferUsageFlags{.GRAPHICS_STORAGE_READ},
)
p_array := sdl.MapGPUTransferBuffer(device, GLOB.pipeline_2d_base.primitive_buffer.transfer, false)
if p_array == nil {
prim_array := sdl.MapGPUTransferBuffer(device, GLOB.pipeline_2d_base.primitive_buffer.transfer, false)
if prim_array == nil {
log.panicf("Failed to map primitive transfer buffer: %s", sdl.GetError())
}
mem.copy(p_array, raw_data(GLOB.tmp_primitives), int(prim_size))
mem.copy(prim_array, raw_data(GLOB.tmp_primitives), int(prim_size))
sdl.UnmapGPUTransferBuffer(device, GLOB.pipeline_2d_base.primitive_buffer.transfer)
sdl.UploadToGPUBuffer(
@@ -495,8 +495,8 @@ draw_layer :: proc(
window: ^sdl.Window,
cmd_buffer: ^sdl.GPUCommandBuffer,
render_texture: ^sdl.GPUTexture,
swapchain_w: u32,
swapchain_h: u32,
swapchain_width: u32,
swapchain_height: u32,
clear_color: [4]f32,
layer: ^Layer,
) {
@@ -550,19 +550,19 @@ draw_layer :: proc(
)
// Shorthand aliases for frequently-used pipeline resources
main_vbuf := GLOB.pipeline_2d_base.vertex_buffer.gpu
main_vert_buf := GLOB.pipeline_2d_base.vertex_buffer.gpu
unit_quad := GLOB.pipeline_2d_base.unit_quad_buffer
white := GLOB.pipeline_2d_base.white_texture
white_texture := GLOB.pipeline_2d_base.white_texture
sampler := GLOB.pipeline_2d_base.sampler
w := f32(swapchain_w)
h := f32(swapchain_h)
width := f32(swapchain_width)
height := f32(swapchain_height)
// Initial GPU state: tessellated mode, main vertex buffer, no atlas bound yet
push_globals(cmd_buffer, w, h, .Tessellated)
sdl.BindGPUVertexBuffers(render_pass, 0, &sdl.GPUBufferBinding{buffer = main_vbuf, offset = 0}, 1)
push_globals(cmd_buffer, width, height, .Tessellated)
sdl.BindGPUVertexBuffers(render_pass, 0, &sdl.GPUBufferBinding{buffer = main_vert_buf, offset = 0}, 1)
current_mode: Draw_Mode = .Tessellated
current_vbuf := main_vbuf
current_vert_buf := main_vert_buf
current_atlas: ^sdl.GPUTexture
// Text vertices live after shape vertices in the GPU vertex buffer
@@ -575,69 +575,69 @@ draw_layer :: proc(
switch batch.kind {
case .Shapes:
if current_mode != .Tessellated {
push_globals(cmd_buffer, w, h, .Tessellated)
push_globals(cmd_buffer, width, height, .Tessellated)
current_mode = .Tessellated
}
if current_vbuf != main_vbuf {
sdl.BindGPUVertexBuffers(render_pass, 0, &sdl.GPUBufferBinding{buffer = main_vbuf, offset = 0}, 1)
current_vbuf = main_vbuf
if current_vert_buf != main_vert_buf {
sdl.BindGPUVertexBuffers(render_pass, 0, &sdl.GPUBufferBinding{buffer = main_vert_buf, offset = 0}, 1)
current_vert_buf = main_vert_buf
}
if current_atlas != white {
if current_atlas != white_texture {
sdl.BindGPUFragmentSamplers(
render_pass,
0,
&sdl.GPUTextureSamplerBinding{texture = white, sampler = sampler},
&sdl.GPUTextureSamplerBinding{texture = white_texture, sampler = sampler},
1,
)
current_atlas = white
current_atlas = white_texture
}
sdl.DrawGPUPrimitives(render_pass, batch.count, 1, batch.offset, 0)
case .Text:
if current_mode != .Tessellated {
push_globals(cmd_buffer, w, h, .Tessellated)
push_globals(cmd_buffer, width, height, .Tessellated)
current_mode = .Tessellated
}
if current_vbuf != main_vbuf {
sdl.BindGPUVertexBuffers(render_pass, 0, &sdl.GPUBufferBinding{buffer = main_vbuf, offset = 0}, 1)
current_vbuf = main_vbuf
if current_vert_buf != main_vert_buf {
sdl.BindGPUVertexBuffers(render_pass, 0, &sdl.GPUBufferBinding{buffer = main_vert_buf, offset = 0}, 1)
current_vert_buf = main_vert_buf
}
chunk := &GLOB.tmp_text_batches[batch.offset]
if current_atlas != chunk.atlas_texture {
text_batch := &GLOB.tmp_text_batches[batch.offset]
if current_atlas != text_batch.atlas_texture {
sdl.BindGPUFragmentSamplers(
render_pass,
0,
&sdl.GPUTextureSamplerBinding{texture = chunk.atlas_texture, sampler = sampler},
&sdl.GPUTextureSamplerBinding{texture = text_batch.atlas_texture, sampler = sampler},
1,
)
current_atlas = chunk.atlas_texture
current_atlas = text_batch.atlas_texture
}
sdl.DrawGPUIndexedPrimitives(
render_pass,
chunk.index_count,
text_batch.index_count,
1,
chunk.index_start,
i32(text_vertex_gpu_base + chunk.vertex_start),
text_batch.index_start,
i32(text_vertex_gpu_base + text_batch.vertex_start),
0,
)
case .SDF:
if current_mode != .SDF {
push_globals(cmd_buffer, w, h, .SDF)
push_globals(cmd_buffer, width, height, .SDF)
current_mode = .SDF
}
if current_vbuf != unit_quad {
if current_vert_buf != unit_quad {
sdl.BindGPUVertexBuffers(render_pass, 0, &sdl.GPUBufferBinding{buffer = unit_quad, offset = 0}, 1)
current_vbuf = unit_quad
current_vert_buf = unit_quad
}
if current_atlas != white {
if current_atlas != white_texture {
sdl.BindGPUFragmentSamplers(
render_pass,
0,
&sdl.GPUTextureSamplerBinding{texture = white, sampler = sampler},
&sdl.GPUTextureSamplerBinding{texture = white_texture, sampler = sampler},
1,
)
current_atlas = white
current_atlas = white_texture
}
sdl.DrawGPUPrimitives(render_pass, 6, batch.count, 0, batch.offset)
}

668
draw/shapes.odin
View File

File diff suppressed because it is too large Load Diff

68
draw/text.odin
View File

@@ -69,7 +69,7 @@ register_font :: proc(bytes: []u8) -> (id: Font_Id, ok: bool) #optional_ok {
}
Text :: struct {
ref: ^sdl_ttf.Text,
sdl_text: ^sdl_ttf.Text,
position: [2]f32,
color: Color,
}
@@ -81,8 +81,8 @@ Text :: struct {
// Hash a string to a u32 cache key using the same Jenkins one-at-a-time algorithm as Clay.
// This means Clay element IDs and user-chosen string IDs share the same keyspace — same
// string produces the same cache key regardless of whether it came from Clay or user code.
text_cache_hash :: #force_inline proc(s: string) -> u32 {
return hash.jenkins(transmute([]u8)s) + 1 // +1 reserves 0 as "no entry" (matches Clay convention)
text_cache_hash :: #force_inline proc(text_string: string) -> u32 {
return hash.jenkins(transmute([]u8)text_string) + 1 // +1 reserves 0 as "no entry" (matches Clay convention)
}
// Shared cache lookup/create/update logic used by both the `text` proc and the Clay render path.
@@ -125,8 +125,8 @@ cache_get_or_update :: proc(cache_id: u32, c_str: cstring, font: ^sdl_ttf.Font)
// `rotation` is in degrees, counter-clockwise.
text :: proc(
layer: ^Layer,
str: string,
pos: [2]f32,
text_string: string,
position: [2]f32,
font_id: Font_Id,
font_size: u16 = 44,
color: Color = BLACK,
@@ -135,14 +135,14 @@ text :: proc(
id: Maybe(string) = nil,
temp_allocator := context.temp_allocator,
) {
c_str := strings.clone_to_cstring(str, temp_allocator)
c_str := strings.clone_to_cstring(text_string, temp_allocator)
sdl_text: ^sdl_ttf.Text
cached := false
if id_str, ok := id.?; ok {
if id_string, ok := id.?; ok {
cached = true
sdl_text = cache_get_or_update(text_cache_hash(id_str), c_str, get_font(font_id, font_size))
sdl_text = cache_get_or_update(text_cache_hash(id_string), c_str, get_font(font_id, font_size))
} else {
sdl_text = sdl_ttf.CreateText(GLOB.text_cache.engine, get_font(font_id, font_size), c_str, 0)
if sdl_text == nil {
@@ -151,11 +151,11 @@ text :: proc(
}
if needs_transform(origin, rotation) {
dpi := GLOB.dpi_scaling
xform := build_pivot_rot(pos * dpi, origin * dpi, rotation)
prepare_text_transformed(layer, Text{sdl_text, {0, 0}, color}, xform)
dpi_scale := GLOB.dpi_scaling
transform := build_pivot_rotation(position * dpi_scale, origin * dpi_scale, rotation)
prepare_text_transformed(layer, Text{sdl_text, {0, 0}, color}, transform)
} else {
prepare_text(layer, Text{sdl_text, pos, color})
prepare_text(layer, Text{sdl_text, position, color})
}
if !cached {
@@ -171,64 +171,64 @@ text :: proc(
// Measure a string in logical pixels (pre-DPI-scaling) using the same font backend as the renderer.
measure_text :: proc(
str: string,
text_string: string,
font_id: Font_Id,
font_size: u16 = 44,
allocator := context.temp_allocator,
) -> [2]f32 {
c_str := strings.clone_to_cstring(str, allocator)
w, h: c.int
if !sdl_ttf.GetStringSize(get_font(font_id, font_size), c_str, 0, &w, &h) {
c_str := strings.clone_to_cstring(text_string, allocator)
width, height: c.int
if !sdl_ttf.GetStringSize(get_font(font_id, font_size), c_str, 0, &width, &height) {
log.panicf("Failed to measure text: %s", sdl.GetError())
}
return {f32(w) / GLOB.dpi_scaling, f32(h) / GLOB.dpi_scaling}
return {f32(width) / GLOB.dpi_scaling, f32(height) / GLOB.dpi_scaling}
}
// ---------------------------------------------------------------------------------------------------------------------
// ----- Text anchor helpers -----------
// ---------------------------------------------------------------------------------------------------------------------
center_of_text :: proc(str: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(str, font_id, font_size)
center_of_text :: proc(text_string: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(text_string, font_id, font_size)
return size * 0.5
}
top_left_of_text :: proc(str: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
top_left_of_text :: proc(text_string: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
return {0, 0}
}
top_of_text :: proc(str: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(str, font_id, font_size)
top_of_text :: proc(text_string: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(text_string, font_id, font_size)
return {size.x * 0.5, 0}
}
top_right_of_text :: proc(str: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(str, font_id, font_size)
top_right_of_text :: proc(text_string: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(text_string, font_id, font_size)
return {size.x, 0}
}
left_of_text :: proc(str: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(str, font_id, font_size)
left_of_text :: proc(text_string: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(text_string, font_id, font_size)
return {0, size.y * 0.5}
}
right_of_text :: proc(str: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(str, font_id, font_size)
right_of_text :: proc(text_string: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(text_string, font_id, font_size)
return {size.x, size.y * 0.5}
}
bottom_left_of_text :: proc(str: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(str, font_id, font_size)
bottom_left_of_text :: proc(text_string: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(text_string, font_id, font_size)
return {0, size.y}
}
bottom_of_text :: proc(str: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(str, font_id, font_size)
bottom_of_text :: proc(text_string: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(text_string, font_id, font_size)
return {size.x * 0.5, size.y}
}
bottom_right_of_text :: proc(str: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(str, font_id, font_size)
bottom_right_of_text :: proc(text_string: string, font_id: Font_Id, font_size: u16 = 44) -> [2]f32 {
size := measure_text(text_string, font_id, font_size)
return size
}