102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
//========================================================================
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// GLFW - An OpenGL framework
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// File: dos_fullscreen.c
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// Platform: DOS
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// API version: 2.6
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// WWW: http://glfw.sourceforge.net
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//------------------------------------------------------------------------
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// Copyright (c) 2002-2006 Camilla Berglund
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would
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// be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such, and must not
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// be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source
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// distribution.
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//
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//========================================================================
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#include "internal.h"
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//************************************************************************
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//**** GLFW internal functions ****
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//************************************************************************
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//========================================================================
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// _glfwBPP2RGB() - Convert BPP to RGB bits (based on "best guess")
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//========================================================================
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static void _glfwBPP2RGB( int bpp, int *r, int *g, int *b )
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{
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int delta;
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int bpp2;
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// Special case: bpp = 32
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if( bpp == 32 ) bpp = 24;
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// Convert "bits per pixel" to red, green & blue sizes
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*r = *g = *b = bpp / 3;
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delta = bpp - (*r * 3);
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if( delta >= 1 )
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{
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*g = *g + 1;
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}
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if( delta == 2 )
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{
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*r = *r + 1;
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}
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}
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//************************************************************************
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//**** Platform implementation functions ****
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//************************************************************************
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//========================================================================
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// _glfwPlatformGetVideoModes() - List available video modes
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//========================================================================
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int _glfwPlatformGetVideoModes( GLFWvidmode *list, int maxcount )
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{
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if( maxcount <= 0 ) return 0;
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// Dummy...
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list[0].Width = 640;
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list[0].Height = 480;
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list[0].RedBits = 5;
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list[0].GreenBits = 6;
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list[0].BlueBits = 5;
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return 1;
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}
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//========================================================================
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// _glfwPlatformGetDesktopMode() - Get the desktop video mode
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//========================================================================
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void _glfwPlatformGetDesktopMode( GLFWvidmode *mode )
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{
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// Dummy...
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mode->Width = 640;
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mode->Height = 480;
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mode->RedBits = 5;
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mode->GreenBits = 6;
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mode->BlueBits = 5;
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}
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