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LibGL: Use correct GLbyte range in glColor4b

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We were only setting half the color intensity that we should have set.
This commit is contained in:
Jelle Raaijmakers 2022-03-23 10:28:39 +01:00 • committed by Brian Gianforcaro
parent ae88c642c6
commit 4b6b9f272f
1 changed files with 6 additions and 1 deletions
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7
Userland/Libraries/LibGL/GLColor.cpp
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@ -1,6 +1,7 @@
/*
* Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
* Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
* Copyright (c) 2022, Jelle Raaijmakers <jelle@gmta.nl>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -42,7 +43,11 @@ void glColor3ubv(GLubyte const* v)
void glColor4b(GLbyte r, GLbyte g, GLbyte b, GLbyte a)
{
g_gl_context->gl_color(r / 255.0, g / 255.0, b / 255.0, a / 255.0);
g_gl_context->gl_color(
(static_cast<double>(r) + 128) / 127.5 - 1,
(static_cast<double>(g) + 128) / 127.5 - 1,
(static_cast<double>(b) + 128) / 127.5 - 1,
(static_cast<double>(a) + 128) / 127.5 - 1);
}
void glColor4dv(GLdouble const* v)