Pixel-Composer/scripts/blurSurface/blurSurface.gml

68 lines
2.3 KiB
Plaintext
Raw Normal View History

2023-02-14 07:37:13 +01:00
function surface_blur_init() {
__blur_hori = surface_create(1, 1);
__blur_vert = surface_create(1, 1);
}
2023-01-17 08:11:55 +01:00
function surface_apply_gaussian(surface, size, bg = false, bg_c = c_white, sampleMode = 0, overColor = noone) {
static uni_bor = shader_get_uniform(sh_blur_gaussian, "sampleMode");
2022-01-13 05:24:03 +01:00
static uni_dim = shader_get_uniform(sh_blur_gaussian, "dimension");
static uni_hor = shader_get_uniform(sh_blur_gaussian, "horizontal");
static uni_wei = shader_get_uniform(sh_blur_gaussian, "weight");
static uni_sze = shader_get_uniform(sh_blur_gaussian, "size");
2023-01-17 08:11:55 +01:00
static uni_ovr = shader_get_uniform(sh_blur_gaussian, "overrideColor");
static uni_ovc = shader_get_uniform(sh_blur_gaussian, "overColor");
2022-12-27 04:00:50 +01:00
2023-03-19 09:17:39 +01:00
var format = surface_get_format(surface)
2023-09-08 21:37:36 +02:00
__blur_hori = surface_verify(__blur_hori, surface_get_width_safe(surface), surface_get_height_safe(surface), format);
__blur_vert = surface_verify(__blur_vert, surface_get_width_safe(surface), surface_get_height_safe(surface), format);
2022-01-13 05:24:03 +01:00
2023-01-17 08:11:55 +01:00
#region kernel generation
size = max(1, round(size));
var gau_array = array_create(size);
var we = 0;
var b = 0.3 * ((size - 1) * 0.5 - 1) + 0.8;
for(var i = 0; i < size; i++) {
var _x = i * .5;
2022-01-13 05:24:03 +01:00
2023-01-17 08:11:55 +01:00
gau_array[i] = (1 / sqrt(2 * pi * b)) * exp( -sqr(_x) / (2 * sqr(b)) );
we += i? gau_array[i] * 2 : gau_array[i];
}
for(var i = 0; i < size; i++) {
gau_array[i] /= we;
}
#endregion
2022-01-13 05:24:03 +01:00
2023-02-14 07:37:13 +01:00
BLEND_OVERRIDE;
2023-03-21 03:01:53 +01:00
gpu_set_tex_filter(true);
2023-02-14 07:37:13 +01:00
surface_set_target(__blur_hori);
2022-01-13 05:24:03 +01:00
draw_clear_alpha(bg_c, bg);
shader_set(sh_blur_gaussian);
2023-09-08 21:37:36 +02:00
shader_set_uniform_f_array_safe(uni_dim, [ surface_get_width_safe(surface), surface_get_height_safe(surface) ]);
2023-02-14 07:37:13 +01:00
shader_set_uniform_f_array_safe(uni_wei, gau_array);
2022-01-13 05:24:03 +01:00
2023-01-17 08:11:55 +01:00
shader_set_uniform_i(uni_bor, sampleMode);
2022-01-13 05:24:03 +01:00
shader_set_uniform_i(uni_sze, size);
shader_set_uniform_i(uni_hor, 1);
2023-01-17 08:11:55 +01:00
shader_set_uniform_i(uni_ovr, overColor != noone);
2023-02-14 07:37:13 +01:00
shader_set_uniform_f_array_safe(uni_ovc, colToVec4(overColor));
2022-12-27 04:00:50 +01:00
2022-01-13 05:24:03 +01:00
draw_surface_safe(surface, 0, 0);
shader_reset();
surface_reset_target();
2023-02-14 07:37:13 +01:00
surface_set_target(__blur_vert);
2022-01-13 05:24:03 +01:00
draw_clear_alpha(bg_c, bg);
shader_set(sh_blur_gaussian);
shader_set_uniform_i(uni_hor, 0);
2023-02-14 07:37:13 +01:00
draw_surface_safe(__blur_hori, 0, 0);
2022-01-13 05:24:03 +01:00
shader_reset();
surface_reset_target();
2023-03-21 03:01:53 +01:00
gpu_set_tex_filter(false);
2023-02-14 07:37:13 +01:00
BLEND_NORMAL;
2022-01-13 05:24:03 +01:00
2023-02-14 07:37:13 +01:00
return __blur_vert;
2022-01-13 05:24:03 +01:00
}