lxdream.org :: lxdream/src/drivers/video

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     1 /**

     2  * $Id$

     3  *

     4  * Null video output driver (ie no video output whatsoever)

     5  *

     6  * Copyright (c) 2005 Nathan Keynes.

     7  *

     8  * This program is free software; you can redistribute it and/or modify

     9  * it under the terms of the GNU General Public License as published by

    10  * the Free Software Foundation; either version 2 of the License, or

    11  * (at your option) any later version.

    12  *

    13  * This program is distributed in the hope that it will be useful,

    14  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    16  * GNU General Public License for more details.

    17  */

    19 #include "display.h"

    20 #include "drivers/video_gl.h"

    22 static gboolean video_null_init( void );

    24 static render_buffer_t video_null_create_render_buffer( uint32_t hres, uint32_t vres, GLuint tex_id )

    25 {

    26     return NULL;

    27 }

    29 static void video_null_destroy_render_buffer( render_buffer_t buffer )

    30 {

    31 }

    33 static gboolean video_null_set_render_target( render_buffer_t buffer )

    34 {

    35     return TRUE;

    36 }

    38 static void video_null_finish_render( render_buffer_t buffer )

    39 {

    40 }

    42 static void video_null_display_render_buffer( render_buffer_t buffer )

    43 {

    44 }

    46 static gboolean video_null_read_render_buffer( unsigned char *target,

    47                                                render_buffer_t buffer,

    48                                                int rowstride, int format )

    49 {

    50     return TRUE;

    51 }

    53 static void video_null_load_frame_buffer( frame_buffer_t frame,

    54                                           render_buffer_t buffer )

    55 {

    56 }

    58 static void video_null_display_blank( uint32_t colour )

    59 {

    60 }

    62 static void video_null_swap_buffers(void)

    63 {

    64 }

    66 struct display_driver display_null_driver = {

    67         "null",

    68         N_("Null (no video) driver"),

    69         video_null_init,

    70         NULL,

    71         NULL,

    72         NULL,

    73         NULL,

    74         video_null_create_render_buffer,

    75         video_null_destroy_render_buffer,

    76         video_null_set_render_target,

    77         video_null_finish_render,

    78         video_null_load_frame_buffer,

    79         video_null_display_render_buffer,

    80         video_null_display_blank,

    81         video_null_swap_buffers,

    82         video_null_read_render_buffer,

    83         NULL };

    85 static gboolean video_null_init( void )

    86 {

    87     gl_vbo_fallback_init(&display_null_driver);

    88     return TRUE;

    89 }