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module: change state to avoid undefined, remove global allocator

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2024-04-05 17:05:48 -07:00 • committed by Stephen Gutekanst
parent 5dbf9ece3b
commit cf883f5544
11 changed files with 271 additions and 222 deletions
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56
src/gfx/Text.zig
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@ -15,8 +15,11 @@ const vec4 = math.vec4;
const Mat3x3 = math.Mat3x3;
const Mat4x4 = math.Mat4x4;
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
/// Internal state
pipelines: std.AutoArrayHashMapUnmanaged(u32, Pipeline),
pipelines: std.AutoArrayHashMapUnmanaged(u32, Pipeline) = .{},
allocator: std.mem.Allocator,
pub const name = .mach_gfx_text;
pub const Mod = mach.Mod(@This());
@ -198,17 +201,14 @@ pub const PipelineOptions = struct {
};
fn deinit(text_mod: *Mod) !void {
for (text_mod.state.pipelines.entries.items(.value)) |*pipeline| pipeline.deinit(text_mod.allocator);
text_mod.state.pipelines.deinit(text_mod.allocator);
for (text_mod.state().pipelines.entries.items(.value)) |*pipeline| pipeline.deinit(text_mod.state().allocator);
text_mod.state().pipelines.deinit(text_mod.state().allocator);
}
fn init(
text_mod: *Mod,
) !void {
text_mod.state = .{
// TODO: struct default value initializers don't work
.pipelines = .{},
};
fn init(text_mod: *Mod) void {
text_mod.init(.{
.allocator = gpa.allocator(),
});
}
fn initPipeline(
@ -216,11 +216,11 @@ fn initPipeline(
text_mod: *Mod,
opt: PipelineOptions,
) !void {
const device = engine.state.device;
const device = engine.state().device;
const pipeline = try text_mod.state.pipelines.getOrPut(engine.allocator, opt.pipeline);
const pipeline = try text_mod.state().pipelines.getOrPut(text_mod.state().allocator, opt.pipeline);
if (pipeline.found_existing) {
pipeline.value_ptr.*.deinit(engine.allocator);
pipeline.value_ptr.*.deinit(text_mod.state().allocator);
}
// Prepare texture for the font atlas.
@ -235,7 +235,7 @@ fn initPipeline(
},
});
const texture_atlas = try gfx.Atlas.init(
engine.allocator,
text_mod.state().allocator,
img_size.width,
.rgba,
);
@ -376,8 +376,8 @@ fn updated(
text_mod: *Mod,
pipeline_id: u32,
) !void {
const pipeline = text_mod.state.pipelines.getPtr(pipeline_id).?;
const device = engine.state.device;
const pipeline = text_mod.state().pipelines.getPtr(pipeline_id).?;
const device = engine.state().device;
// TODO: make sure these entities only belong to the given pipeline
// we need a better tagging mechanism
@ -425,7 +425,7 @@ fn updated(
_ = font_name; // TODO: actually use font name
const font_bytes = @import("font-assets").fira_sans_regular_ttf;
var font = try gfx.Font.initBytes(font_bytes);
defer font.deinit(engine.allocator);
defer font.deinit(text_mod.state().allocator);
const font_size = engine.entities.getComponent(style, .mach_gfx_text, .font_size).?;
const font_weight = engine.entities.getComponent(style, .mach_gfx_text, .font_weight);
@ -450,16 +450,16 @@ fn updated(
const codepoint = segment[glyph.cluster];
// TODO: use flags(?) to detect newline, or at least something more reliable?
if (codepoint != '\n') {
const region = try pipeline.regions.getOrPut(engine.allocator, .{
const region = try pipeline.regions.getOrPut(text_mod.state().allocator, .{
.index = glyph.glyph_index,
.size = @bitCast(font_size),
});
if (!region.found_existing) {
const rendered_glyph = try font.render(engine.allocator, glyph.glyph_index, .{
const rendered_glyph = try font.render(text_mod.state().allocator, glyph.glyph_index, .{
.font_size_px = run.font_size_px,
});
if (rendered_glyph.bitmap) |bitmap| {
var glyph_atlas_region = try pipeline.texture_atlas.reserve(engine.allocator, rendered_glyph.width, rendered_glyph.height);
var glyph_atlas_region = try pipeline.texture_atlas.reserve(text_mod.state().allocator, rendered_glyph.width, rendered_glyph.height);
pipeline.texture_atlas.set(glyph_atlas_region, @as([*]const u8, @ptrCast(bitmap.ptr))[0 .. bitmap.len * 4]);
texture_update = true;
@ -484,7 +484,7 @@ fn updated(
const r = region.value_ptr.*;
const size = vec2(@floatFromInt(r.width), @floatFromInt(r.height));
try glyphs.append(engine.allocator, .{
try glyphs.append(text_mod.state().allocator, .{
.pos = vec2(
origin_x + glyph.offset.x(),
origin_y - (size.y() - glyph.offset.y()),
@ -509,7 +509,7 @@ fn updated(
// TODO: could writeBuffer check for zero?
if (glyphs.items.len > 0) encoder.writeBuffer(pipeline.glyphs, 0, glyphs.items);
defer glyphs.deinit(engine.allocator);
defer glyphs.deinit(text_mod.state().allocator);
if (texture_update) {
// rgba32_pixels
// TODO: use proper texture dimensions here
@ -518,7 +518,7 @@ fn updated(
.bytes_per_row = @as(u32, @intCast(img_size.width * 4)),
.rows_per_image = @as(u32, @intCast(img_size.height)),
};
engine.state.queue.writeTexture(
engine.state().queue.writeTexture(
&.{ .texture = pipeline.texture },
&data_layout,
&img_size,
@ -529,7 +529,7 @@ fn updated(
var command = encoder.finish(null);
defer command.release();
engine.state.queue.submit(&[_]*gpu.CommandBuffer{command});
engine.state().queue.submit(&[_]*gpu.CommandBuffer{command});
}
fn preRender(
@ -537,7 +537,7 @@ fn preRender(
text_mod: *Mod,
pipeline_id: u32,
) !void {
const pipeline = text_mod.state.pipelines.get(pipeline_id).?;
const pipeline = text_mod.state().pipelines.get(pipeline_id).?;
// Update uniform buffer
const proj = Mat4x4.projection2D(.{
@ -557,7 +557,7 @@ fn preRender(
),
};
engine.state.encoder.writeBuffer(pipeline.uniforms, 0, &[_]Uniforms{uniforms});
engine.state().encoder.writeBuffer(pipeline.uniforms, 0, &[_]Uniforms{uniforms});
}
fn render(
@ -565,10 +565,10 @@ fn render(
text_mod: *Mod,
pipeline_id: u32,
) !void {
const pipeline = text_mod.state.pipelines.get(pipeline_id).?;
const pipeline = text_mod.state().pipelines.get(pipeline_id).?;
// Draw the text batch
const pass = engine.state.pass;
const pass = engine.state().pass;
const total_vertices = pipeline.num_glyphs * 6;
pass.setPipeline(pipeline.render);
// TODO: remove dynamic offsets?