Commit Graph

16 Commits

Author SHA1 Message Date
Hajime Hoshi
bc9e9d8562 ebiten: move the builtin shader to internal/builtinshader
Updates #2861
2024-04-20 21:23:37 +09:00
Hajime Hoshi
20ef839e03 all: rename arguments in Fragment
Updates #2767
2023-09-21 01:35:57 +09:00
Hajime Hoshi
7ed2d73406 internal/builtinshader: bug fix: wrong blending rate
The blending rate of colors in a square vertices should be calculated
by the lower-right point, not the upper-left point.

mix(a, b, rate) function calculates (1-rate)*a + rate*b, so a should
be weighted if rate is close to 0, and b should be weighted if rate
is close to 1. The current implementation was opposite.

Rendering results don't seem to be changed so much actually, but the
current implementation doesn't make sense.
2023-08-31 15:11:37 +09:00
Hajime Hoshi
009fb504ed internal/builtinshader: remove adjustments for tie-breaking
This seems no longer needed with the pixel mode.

This was confirmed by this test:

```
go run . -run=TestImageLinearFilterGlitch2
```

The same change didn't work at b5ca404c42
but worked at 49582519c1, which
introduced the pixel mode.

Updates #1212
2023-08-30 23:55:44 +09:00
Hajime Hoshi
db34930ae8 internal/graphics: add built-in Kage functions
This change adds these Kage functions:

* imageDstOrigin
* imageDstSrc
* imageSrcNOrigin
* imageSrcNSrc

and deprecates these functions:

* imageDstRegionOnTexture
* imageSrcRegionOnTexture

Closes #1870
2023-08-28 15:06:45 +09:00
Hajime Hoshi
d9797423e5 ebiten, internal/builtinshader: use an array instead of a map
runtime.mapaccess2 is one of heavy function calls.

Updates #2601
2023-08-20 05:20:52 +09:00
Hajime Hoshi
63df6168d9 internal/shader: use plural forms for Kage compiler directives
This change renames

```
//kage:unit texel
//kage:unit pixel
```

to

```
//kage:unit texels
//kage:unit pixels
```

.

Closes #2717
2023-08-01 11:41:38 +09:00
Hajime Hoshi
49582519c1 all: add a compiler directive kage:unit
This change adds a new compiler directive 'kage:unit' to Kage. This
takes one of these two values: 'pixel' and 'texel'. The default value
is 'texel'.

With the pixel-unit mode, all the built-in functions treats pixels
instead of texels, and the texCoord argument of Fragment is in pixels.
This simplifies shader programs as programs no longer have the notion
of texels.

With the texel-unit mode, the behavior is the same as the current
behavior.

Closes #1431
2023-04-23 22:11:57 +09:00
Hajime Hoshi
a310b7c5bb internal/builtinshader: fix comments 2022-10-10 13:14:37 +09:00
Hajime Hoshi
b489548963 internal/builtinshader: fix comments 2022-10-03 01:09:28 +09:00
Hajime Hoshi
534d82c17d internal/builtinshader: move Filter and Address from internal/graphicsdriver 2022-10-02 23:24:15 +09:00
Hajime Hoshi
ff72898b85 internal/builtinshader: use a struct instead of a map
With a map, we might miss typos.
2022-10-02 20:17:47 +09:00
Hajime Hoshi
3bb21282af internal/builtinshader: bug fix: typo
Updates #2364
2022-10-02 16:16:49 +09:00
Hajime Hoshi
a4e9a05b14 ebiten: reland: use Kage shaders instead of built-in shaders for a color matrix
This replaces the built-in shaders with Kage shadres. This is a
refactoring and doesn't degrade performance:

```
go test -bench=^BenchmarkColorMScale$ -run=^$ . -count=5
```

```
name           old time/op  new time/op  delta
ColorMScale-8   978ns ±15%  1184ns ±46%   ~     (p=0.413 n=4+5)
```

A follow-up change to remove the built-in shaders is needed.

Closes #2364
2022-10-02 15:35:40 +09:00
Hajime Hoshi
520c47f0e8 Revert "ebiten: use Kage shaders instead of built-in shaders for a color matrix"
This reverts commit 7fc79c50c3.

Reason: a color scale might be used with ColorM (DrawTriangles)

Updates #2364
2022-10-02 00:19:37 +09:00
Hajime Hoshi
7fc79c50c3 ebiten: use Kage shaders instead of built-in shaders for a color matrix
Closes #2364
2022-10-02 00:08:14 +09:00