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Diffstat (limited to 'vcl/opengl/shaders/areaHashCRC64TFragmentShader.glsl')
-rw-r--r--vcl/opengl/shaders/areaHashCRC64TFragmentShader.glsl87
1 files changed, 0 insertions, 87 deletions
diff --git a/vcl/opengl/shaders/areaHashCRC64TFragmentShader.glsl b/vcl/opengl/shaders/areaHashCRC64TFragmentShader.glsl
deleted file mode 100644
index 901b481d8081..000000000000
--- a/vcl/opengl/shaders/areaHashCRC64TFragmentShader.glsl
+++ /dev/null
@@ -1,87 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*
- * This file is part of the LibreOffice project.
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- */
-
-/* TODO Use textureOffset for newest version of GLSL */
-
-
-#version 130
-
-uniform sampler2D crc_table;
-uniform sampler2D sampler;
-uniform float xstep;
-uniform float ystep;
-
-varying vec2 tex_coord;
-
-const int scale = 4;
-const float ratio = 16.0;
-
-
-ivec2 crc64( ivec2 hval, int color )
-{
- int dx = 2 * ((hval[0] ^ color) & 0xff);
- float s = dx / 255.0;
- vec4 table_value_lo = round(texture2D( crc_table, vec2( s, 0.0 ) ) * 255.0);
- s = (dx+1) / 255.0;
- vec4 table_value_hi = round(texture2D( crc_table, vec2( s, 0.0 ) ) * 255.0);
-
- int tvalue_lo = int(table_value_lo[0]) | (int(table_value_lo[1]) << 8) | (int(table_value_lo[2]) << 16) | (int(table_value_lo[3]) << 24);
- int tvalue_hi = int(table_value_hi[0]) | (int(table_value_hi[1]) << 8) | (int(table_value_hi[2]) << 16) | (int(table_value_hi[3]) << 24);
-
- hval[1] = tvalue_hi ^ (hval[1] >> 8);
- hval[0] = tvalue_lo ^ ( (hval[1] << 24) | (hval[0] >> 8) );
-
- return hval;
-}
-
-
-void main(void)
-{
- ivec2 Crc = ivec2( 0xffffffff, 0xffffffff );
- vec2 offset = vec2( 0.0, 0.0 );
- vec2 next_coord = tex_coord.st;
- for( int y = 0; y < scale && next_coord.y <= 1.0; ++y )
- {
- for( int x = 0; x < scale && next_coord.x <= 1.0; ++x )
- {
- vec4 pixel = round(texture2D( sampler, next_coord ) * 255.0);
-
- int r = int(pixel.r); // 0..255
- int g = int(pixel.g); // 0..255
- int b = int(pixel.b); // 0..255
- int a = int(pixel.a); // 0..255
-
- Crc = crc64( Crc, r );
- Crc = crc64( Crc, g );
- Crc = crc64( Crc, b );
- Crc = crc64( Crc, a );
-
- offset.x += xstep;
- next_coord = tex_coord.st + offset;
- }
- offset.y += ystep;
- offset.x = 0.0;
- next_coord = tex_coord.st + offset;
- }
-
- Crc[0] = ~Crc[0];
- Crc[1] = ~Crc[1];
-
- int Hash = Crc[0] ^ Crc[1];
-
- float fr = ( Hash & 0xff) / 255.0;
- float fg = ((Hash >> 8) & 0xff) / 255.0;
- float fb = ((Hash >> 16) & 0xff) / 255.0;
- float fa = ((Hash >> 24) & 0xff) / 255.0;
-
-
- gl_FragColor = vec4(fr, fg, fb, fa);
-}
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */