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Nunuhara Cabbage
2237bb814c
Most of the functionality of gfx_render_texture (draw method, blend rate) is moved into sprite_render, since this was the only place using it. The draw method and blend rate are now stored in sact_sprite objects instead of textures. sact_sprite now has two renderers: the old SACT2 renderer (with blend rate as the only shader parameter) and the new ChipmunkSpriteEngine renderer, which supports multiply/add colors and the "surface area" feature from PartsEngine. Rance Quest now runs up to the first Flash-related function call (Flash?!?!).
41 lines
1.3 KiB
GLSL
41 lines
1.3 KiB
GLSL
/* Copyright (C) 2019 Nunuhara Cabbage <nunuhara@haniwa.technology>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://gnu.org/licenses/>.
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*/
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uniform sampler2D tex;
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uniform float blend_rate;
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uniform vec2 bot_left;
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uniform vec2 top_right;
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uniform vec3 add_color;
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uniform vec3 multiply_color;
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in vec2 tex_coord;
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out vec4 frag_color;
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float point_in_rect(vec2 p, vec2 bot_left, vec2 top_right) {
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vec2 s = step(bot_left, p) - step(top_right, p);
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return s.x * s.y;
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}
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void main() {
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vec2 size = vec2(textureSize(tex, 0));
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vec2 bl = bot_left / size;
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vec2 tr = top_right / size;
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vec4 tex_color = texture(tex, tex_coord);
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vec3 mod_color = (tex_color.rgb + add_color) * multiply_color;
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frag_color = vec4(mod_color, tex_color.a * blend_rate) * point_in_rect(tex_coord, bl, tr);
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}
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