forked from 1b-agent/opencadstudio-upstream
Hakan SevenandClaude Opus 4.8
a2cb833c83
Match the image shader's uniform layout to the shared 112-byte Uniforms struct (was 144) and project quad corners via view_proj so texture-quad draws no longer fail uniform binding validation. Offset image quad corners by world_offset, matching all other Model-space geometry, so rasters land in the same local space instead of being shifted away. Downscale oversized images to the GPU's max texture dimension (8192) to keep texture creation from failing. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
61 lines
2.3 KiB
WebGPU Shading Language
61 lines
2.3 KiB
WebGPU Shading Language
// Textured-quad shader for raster images (RasterImage entity).
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// Renders a four-vertex quad (two triangles) with a sampled texture.
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// ── Bind group 0: shared projection uniforms ─────────────────────────────────
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// Must match the shared `Uniforms` struct (scene::pipeline::uniforms, 112 B).
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struct Uniforms {
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view_proj: mat4x4<f32>,
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camera_pos: vec4<f32>,
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viewport_size: vec2<f32>,
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world_per_pixel: f32,
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lwdisplay_enable: f32,
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flat_shade: f32,
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transparency_enable: f32,
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_pad: vec2<f32>,
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};
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@group(0) @binding(0) var<uniform> u: Uniforms;
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// ── Bind group 1: per-image texture + sampler ────────────────────────────────
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@group(1) @binding(0) var img_texture: texture_2d<f32>;
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@group(1) @binding(1) var img_sampler: sampler;
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// Per-image params (fade, clip flag, etc.)
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struct ImageParams {
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opacity: f32,
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draw_depth: f32, // signed (-1,1) draw-order bias; 0 = neutral
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_pad1: f32,
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_pad2: f32,
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};
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@group(1) @binding(2) var<uniform> img_params: ImageParams;
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// Draw-order depth bias (see wire.wgsl).
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const DRAW_ORDER_BIAS: f32 = 0.001;
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// ── Vertex stage ──────────────────────────────────────────────────────────────
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struct VertIn {
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@location(0) pos: vec3<f32>,
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@location(1) uv: vec2<f32>,
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};
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struct VertOut {
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@builtin(position) clip_pos: vec4<f32>,
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@location(0) uv: vec2<f32>,
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};
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@vertex
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fn vs_main(in: VertIn) -> VertOut {
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var out: VertOut;
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out.clip_pos = u.view_proj * vec4<f32>(in.pos, 1.0);
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out.clip_pos.z = out.clip_pos.z - img_params.draw_depth * DRAW_ORDER_BIAS * out.clip_pos.w;
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out.uv = in.uv;
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return out;
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}
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// ── Fragment stage ────────────────────────────────────────────────────────────
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@fragment
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fn fs_main(in: VertOut) -> @location(0) vec4<f32> {
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let col = textureSample(img_texture, img_sampler, in.uv);
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return vec4<f32>(col.rgb, col.a * img_params.opacity);
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}
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