18260a0d9a
Drawing accumulated textures (in Accumulatedtextures) is independent of drawing with render list which causes problems with rendering order when render list and accumulated textures are flushed. To solve this we need to combine both so we can check for overlapped drawing. Previously drawRect was using RenderList batch drawing but not drawAlphaRect which is essentially the same as drawRect but additionally supports alpha value. This adds support to draw alpha rectangles to RenderList and converts drawAlphaRect. Change-Id: I82bf0b410e5ebabb13bab7b29a2e53a6fdaa404f
72 lines
1.8 KiB
GLSL
72 lines
1.8 KiB
GLSL
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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varying vec2 tex_coord;
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varying vec2 alpha_coord;
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varying vec2 mask_coord;
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#ifdef USE_VERTEX_COLORS
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varying vec4 vertex_color;
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#endif
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uniform sampler2D texture;
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uniform sampler2D mask;
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uniform sampler2D alpha;
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uniform vec4 color;
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uniform int type;
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#define TYPE_NORMAL 0
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#define TYPE_BLEND 1
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#define TYPE_MASKED 2
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#define TYPE_DIFF 3
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#define TYPE_MASKED_COLOR 4
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void main()
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{
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vec4 texelTexture = texture2D(texture, tex_coord);
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if (type == TYPE_NORMAL)
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{
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gl_FragColor = texelTexture;
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}
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else if (type == TYPE_BLEND)
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{
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vec4 texelMask = texture2D(mask, mask_coord);
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vec4 texelAlpha = texture2D(alpha, alpha_coord);
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gl_FragColor = texelTexture;
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gl_FragColor.a = 1.0 - (1.0 - floor(texelAlpha.r)) * texelMask.r;
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}
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else if (type == TYPE_MASKED)
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{
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vec4 texelMask = texture2D(mask, mask_coord);
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gl_FragColor = texelTexture;
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gl_FragColor.a = 1.0 - texelMask.r;
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}
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else if (type == TYPE_DIFF)
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{
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vec4 texelMask = texture2D(mask, mask_coord);
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float alpha = 1.0 - abs(texelTexture.r - texelMask.r);
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if (alpha > 0.0)
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gl_FragColor = texelMask / alpha;
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gl_FragColor.a = alpha;
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}
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else if (type == TYPE_MASKED_COLOR)
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{
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#ifdef USE_VERTEX_COLORS
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gl_FragColor = vertex_color;
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#else
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gl_FragColor = color;
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#endif
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gl_FragColor.a = 1.0 - texelTexture.r;
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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