kiss-lang/kiss-flixel
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make checkerboard a background with transparency. close #2

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This commit is contained in:
Nat Quayle Nelson
2024-02-04 15:28:01 -07:00
parent a1b945f26b
commit a32b5bc083
2 changed files with 10 additions and 2 deletions
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7
src/kiss_flixel/shaders/CheckerBoard.frag
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@@ -6,6 +6,10 @@ uniform float checkSize = 64;
void main()
{
vec4 color = flixel_texture2D(bitmap, openfl_TextureCoordv);
float transparency = 1.0 - color.a;
vec2 position = openfl_TextureCoordv * iResolution + cameraPos;
float row = floor(position.y / checkSize);
float col = floor(position.x / checkSize);
@@ -16,5 +20,6 @@ void main()
vec4 oddColor = oddRow ? color1 : color2;
vec4 evenColor = oddRow ? color2 : color1;
gl_FragColor = oddCol ? oddColor: evenColor;
vec4 bgColor = oddCol ? oddColor: evenColor;
gl_FragColor = color + bgColor * transparency;
}