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https://github.com/Ttanasart-pt/Pixel-Composer.git
synced 2024-11-14 22:43:53 +01:00
52 lines
2.2 KiB
Plaintext
52 lines
2.2 KiB
Plaintext
globalvar BLEND_TYPES;
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BLEND_TYPES = [ "Normal", "Add", "Subtract", "Multiply", "Screen", "Overlay", "Hue", "Saturation", "Luminosity", "Maximum", "Minimum", "Replace" ];
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function draw_surface_blend(background, foreground, blend, alpha, _pre_alp = true, _mask = 0, tile = 0) {
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if(!is_surface(background)) return;
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var sh = sh_blend_normal
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switch(array_safe_get(BLEND_TYPES, blend)) {
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case "Normal" : sh = sh_blend_normal break;
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case "Add" : sh = sh_blend_add; break;
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case "Subtract" : sh = sh_blend_subtract; break;
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case "Multiply" : sh = sh_blend_multiply; break;
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case "Screen" : sh = sh_blend_screen; break;
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case "Overlay" : sh = sh_blend_overlay; break;
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case "Hue" : sh = sh_blend_hue; break;
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case "Saturation" : sh = sh_blend_sat; break;
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case "Luminosity" : sh = sh_blend_luma; break;
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case "Maximum" : sh = sh_blend_max; break;
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case "Minimum" : sh = sh_blend_min; break;
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case "Replace" : sh = sh_blend_replace; break;
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default: return;
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}
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var uniform_foreground = shader_get_sampler_index(sh, "fore");
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var uniform_mask = shader_get_sampler_index(sh, "mask");
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var uniform_dim_rat = shader_get_uniform(sh, "dimension");
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var uniform_is_mask = shader_get_uniform(sh, "useMask");
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var uniform_alpha = shader_get_uniform(sh, "opacity");
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var uniform_tile = shader_get_uniform(sh, "tile_type");
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var uniform_presalpha = shader_get_uniform(sh, "preserveAlpha");
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var surf = surface_get_target();
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var surf_w = surface_get_width(surf);
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var surf_h = surface_get_height(surf);
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if(is_surface(foreground)) {
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shader_set(sh);
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texture_set_stage(uniform_foreground, surface_get_texture(foreground));
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if(_mask) texture_set_stage(uniform_mask, surface_get_texture(_mask));
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shader_set_uniform_i(uniform_is_mask, _mask != 0? 1 : 0);
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shader_set_uniform_f_array(uniform_dim_rat, [ surface_get_width(background) / surface_get_width(foreground), surface_get_height(background) / surface_get_height(foreground) ]);
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shader_set_uniform_f(uniform_alpha, alpha);
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shader_set_uniform_i(uniform_presalpha, _pre_alp);
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shader_set_uniform_i(uniform_tile, tile);
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}
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BLEND_ALPHA
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draw_surface_stretched_safe(background, 0, 0, surf_w, surf_h);
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BLEND_NORMAL
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shader_reset();
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} |