1f2b64fb4c41894393b0d0b1fdbcd34a9b5cbd2a
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Commits
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  adminandClaude Opus 5.5
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f03ca0d382 |
Draw a shader in passes with a Pass node (#301)
A Blur stops at radius 8 in one pass, and bloom needs a softened copy of the picture beside the original. A Pass node cuts the graph: what feeds it is drawn into a picture of its own first, and the nodes that read a picture read that one when it feeds them. - Pass has color and alpha like the Output, a Resolution setting (Full, Half, Quarter) and a picture output. Texture color, Texture alpha, Sample texture, Blur and Texture size get a picture input. Unconnected it is the wearer's own picture, so the original stays readable beside any pass. - picture is a port type of its own. It plugs only into a picture input, not even into an any port. - The walk shared by the compilers can stop at a node (cut). The shader compiler draws each Pass it meets as a fragment of its own, earlier passes first. A ring through a picture says Feeds itself, and more than 8 passes say so at the node. - A pass draws untinted. The tint comes on when the last part reads a picture, so a particle source draws its passes once for all of its particles (user decision). - A pass's picture is the wearer's picture and its Padding, at the pixels of the picture times Resolution, at most 2048 per side. It is read with the picture's own filter and continues past its frame as the Output's Edge says. - PassPictures keeps one render texture per pass and wearer. It draws again only when picture, size, Padding or a uniform changed. A field's picture is a render texture that changes under the same id, so a field draws its passes every time. - Sprite, sliced sprite, text, particle source, field shader and the Shader tab's preview all draw passes. syncShader takes a fixed picture for a 9-slice, which holds its corners but keeps the margin. - texelAt and blur take the sampler they read. Existing shaders compile to the same program apart from that argument. - A field shader's Blur and Texture size count a pixel as a unit of the frame (uPixelScale), not of the screen. Before, a field's blur grew when zooming out and shrank when zooming in. This came with #170 and #300 and is fixed here because passes inherit it. - tools/perf-shaders.mjs and tools/perf-field-shaders.mjs measure two passes with GM_PERF_PASSES=1 and GM_PERF_PASS_RESOLUTION. Below Full an open Pass shrinks the picture first, as the wiki's recipe does. Found on the way: - Destroying the pictures before the shader made Pixi warn that a texture was still bound. The shader goes first now, and a picture of a new size is resized rather than replaced. - Two passes in a row could draw plain white the first time. Pixi builds the code that binds a program's resources once and finds them by position. A pass of one graph is often the same program as a pass of another with fewer slots, so it bound a placeholder. Every shader now declares all 8 pass slots and its uniform group. Tests: - Gate on melektaus-atx: 225 files, 3480 tests (3467 + 13), exit 0. - e2e 28 and 31 on melektaus-atx: 97 checks (94 + 3) and 44 checks (43 + 1), all passed, no Pixi warning in the console. - 28l-vii: a Blur across, a Pass and a Blur down draw the 5x5 spot of a Blur of Both (difference 0.000). On a grey sprite a pass's picture added to the original is 231/60/60, each tinted once. Two Passes in a row after a graph with one show red and green, not white. - 31v-iii: a Blur of 8 fades a field's frame edge over 8.0 units at 50 % and at 200 % zoom. - Counter-checks: a tinted pass fails 1 unit test. Pictures never bound fail both e2e checks (spot 0.20 instead of 0.04, 243/158/158). Pass slots by the number of passes draw #ffffff, and a field without its pixel scale ramps over 16 and 4 units: exactly the two new checks fail. - e2e sum 1716 is counted, not yet measured (1712 + 4). - Measured on stein2 (HD 630, one run per row): 50 field shaders at radius 8 go from 11.4 to 41.3 fps in two passes, 44.4 at radius 16 (three passes at Half). 800 sprites at radius 8 go from 13.9 to 24.5 fps. At radius 4 one pass stays faster from 400 sprites on. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |
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adminandClaude Opus 5.5
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df61b08bd1 |
Soften a shader's picture in one pass with a Blur node (#300)
A blur already worked with Sample texture, but only by wiring every sample by hand: 25 nodes for a 5x5. Averaging their colours also gave a dark seam wherever a neighbour was transparent. The Blur node writes the loop itself and averages the right way. - Blur takes radius (pixels of the picture, 0 to 8, fractions allowed) and u/v like Sample texture, and gives color and alpha. - Kind is Box (default) or Gaussian, Direction is Both, Horizontal or Vertical. Both are arguments of one prelude helper, blur(). - The samples are averaged premultiplied and only then made straight, so a transparent neighbour lowers the opacity and adds no black. - The outermost ring counts by the part of the radius that reaches it, so a radius from a Property changes smoothly and compiles nothing again. - A node may now declare prepare, a vec4 the compiler works out once into a local. Color and alpha read that one sum instead of blurring twice. - A reached Blur counts as a shifted sample, so the picture comes with the Output's Edge. It cannot feed the Vertex output. - Both perf tools take GM_PERF_BLUR=<radius>. Wider blurs and bloom need several passes. That is #301. Measured on stein2 (HD 630, one run per value, fps), Box blur: - 48x48 sprites at 100/400/800: radius 2 59.8/58.4/55.6, radius 4 53.1/51.4/36.3, radius 8 46.6/24.4/14.4. - 256x256 field shaders at 1/10/50: radius 2 60.2/56.0/49.0, radius 4 60.1/49.0/27.1, radius 8 52.4/34.9/11.4. Tests: - Gate: 224 files, 3467 tests, CHECK EXIT 0 (+7). - e2e 28: ALL PASSED, 94 checks (+5 in 28l-vi). Pixels match the arithmetic to 1: the last red texel at radius 0.5/1/4 reads 187/173/154 (expected 188/173/154). - Counter-checks: Blur not counted as shifted fails 1 unit test. Blur output left premultiplied fails the seam and spot checks. - e2e total 1712 is computed (1707 + 5). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |
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adminandClaude Opus 5.5
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4716726b6b |
Let a shader move the corners of the picture it wears (#79)
A shader could only say what colour a pixel has. Where the picture is drawn was fixed to the four corners of its rectangle, so nothing could wave, bend or wobble. - The new node Vertex output takes x and y, in pixels of the picture, and moves every corner of the wearer's grid by them. The UVs stay with the corners, so the picture bends along. - Subdivisions on that node says how fine the grid is: cells per axis, 1 to 64, 8 by default. 1 is the plain quad. A shader without the node keeps the quad every sprite shares. - A graph holds one Vertex output at most. UV, Time, Property, Number and the math nodes may feed it, and one node may feed both outputs. - Texture color, Texture alpha, Sample texture, Texture size and Color cannot feed it. The node says "Not available per corner" and the shader does not compile. - Sprites, texts and the preview in the shader tab wear the grid. A nine-slice sprite and particles draw as if the node were not there. - Picking, the selection frame, the size and colliders stay with the rectangle. A wearer with a Vertex output is never culled, as with Padding, and with Padding the grid covers the room around the picture too. - tools/perf-shaders.mjs takes GM_PERF_SUBDIVISIONS to measure a grid against the plain quad. Measured on stein2 (Intel HD 630), frames per second, one run per row: at 800 sprites 58 with a shader on the quad, 46 with 8 cells, 41 with 32. Up to 400 sprites a grid hardly shows. Every sprite holds its own grid. Tests: - Gate on melektaus-atx: 220 files, 3416 tests, CHECK EXIT 0. - 15 new unit tests for the compiler and the grid. - Four new e2e checks in modules 28 and 30: a fixed offset moves the picture, 8 cells bend only the lower half where 1 cell shears it all, Texture alpha is refused at the node, a text moves. - e2e 28,30 on melektaus-atx: 110 checks, all pass. - The e2e total of 1699 is counted (1695 + 4), the full suite did not run. - No counter-probe, no screenshot. Not looked at: the preview, Time in the browser, flipped sprites, Padding together with the grid. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |
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rootandClaude Fable 5.1
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0e5e5ef925 |
Shaders draw in the sprite's own pass: a Mesh with the graph's fragment, no filter (#77)
game-maker / suite (push) Successful in 8m24s
A sprite's picture is now a Mesh (unit quad, sibling of its Graphics node, which keeps only the hit area); a worn shader replaces Pixi's fragment in that draw, so there is no intermediate texture and no extra render pass. Measured on the HD 630: 400 shaded sprites hold 60 fps (was 34), 800 hold 56 (was 20). Two Pixi facts the code leans on: a mesh's texture is bound only for Pixi's own shader, so GraphShader.wear hands it over; and MeshPipe caches whether a mesh batches and re-checks it only in a frame without structure changes, so switching a shader on or off calls mesh.unload(). The console panel mirrors console.group/groupCollapsed/groupEnd and fills the %s %d %o %c directives, so Pixi's deprecation warning shows its head, not only its stack. E2E 12 guards against the addChild-on-Graphics warning, 28 counts shaders instead of filters. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> |
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rootandClaude Opus 5
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82effb2c03 |
Shader performance: measure one filter pass per sprite (#67)
game-maker / suite (push) Successful in 8m23s
The wiki carried an estimate ("fine for dozens, not for thousands"). Measured
on the Intel HD 630 that CI uses, 48x48 sprites in a 640x360 camera, neutral
values, three runs agreeing to 1 fps:
sprites 25 50 100 200 400 800
fps 58 56 54 48 34 20
The same scene without shaders holds 60 fps at every one of those counts, 800
included. Quadrupling the sprite area (96x96) measures the same, so the cost is
the render target switch, not the pixels: roughly 20 us per pass up to 200,
40 us at 800.
tools/perf-shaders.mjs drives it (not run in CI, frame times are machine
dependent). New hook __gm.filterCount() counts visible nodes carrying a filter
and proves one pass per sprite; e2e 28 checks it.
Two traps the tool guards against, both cost a wrong answer first: the median
frame time is useless here (the distribution is bimodal under vsync, so the
rate comes from frames/duration), and --disable-gpu-vsync has no effect in
headless, so what is measured is the point where the frame rate breaks down.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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