code/graphics/grstub.cpp

#include "graphics/2d.h"
#include "graphics/grinternal.h"
#include "bmpman/bmpman.h"
#include "ddsutils/ddsutils.h"
#include "tgautils/tgautils.h"
#include "pngutils/pngutils.h"
#include "jpgutils/jpgutils.h"
#include "pcxutils/pcxutils.h"
#include "globalincs/systemvars.h"
#include "anim/animplay.h"
#include "anim/packunpack.h"
#include "model/model.h"

#define BMPMAN_INTERNAL
#include "bmpman/bm_internal.h"


uint gr_stub_lock()
{
	return 1;
}

// NOTE: should return a failure
int gr_stub_create_buffer()
{
	return -1;
}

// NOTE: should return a failure
bool gr_stub_pack_buffer(const int buffer_id, vertex_buffer *vb)
{
	return false;
}

// NOTE: should return a failure
bool gr_stub_config_buffer(const int buffer_id, vertex_buffer *vb)
{
	return false;
}

int	gr_stub_make_light(light *light, int idx, int priority)
{
	return 0;
}

int gr_stub_preload(int bitmap_num, int is_aabitmap)
{
	return 0;
}

int gr_stub_save_screen()
{
	return 1;
}

int gr_stub_tcache_set(int bitmap_id, int bitmap_type, float *u_scale, float *v_scale, int tex_unit = 0)
{
	return 0;
}

int gr_stub_zbuffer_get()
{
	return 0;
}

int gr_stub_zbuffer_set(int mode)
{
	return 0;
}

void gr_set_fill_mode_stub(int mode)
{
}

void gr_stub_aabitmap_ex(int x,int y,int w,int h,int sx,int sy,int resize_mode,bool mirror)
{
}

void gr_stub_aabitmap(int x, int y,int resize_mode, bool mirror)
{
}

void gr_stub_aaline(vertex *v1, vertex *v2)
{
}

void gr_stub_activate(int active)
{
}

void gr_stub_bitmap_ex(int x, int y, int w, int h, int sx, int sy, int resize_mode)
{
}

void gr_stub_bitmap(int x, int y)
{
}

void gr_stub_center_alpha( int type)
{
}

void gr_stub_circle( int xc, int yc, int d, int resize_mode )
{
}

void gr_stub_unfilled_circle( int xc, int yc, int d, int resize_mode )
{
}

void gr_stub_cleanup(int minimize)
{
}

void gr_stub_clear()
{
}

void gr_stub_cross_fade(int bmap1, int bmap2, int x1, int y1, int x2, int y2, float pct, int resize_mode)
{
}

void gr_stub_curve(int xc, int yc, int r, int direction, int resize_mode)
{
}

void gr_stub_destroy_buffer(int idx)
{
}

void gr_stub_destroy_light(int idx)
{
}

void gr_stub_dump_frame()
{
}

void gr_stub_dump_frame_start(int first_frame, int frames_between_dumps)
{
}

void gr_stub_dump_frame_stop()
{
}

void gr_stub_end_clip_plane()
{
}

void gr_stub_end_instance_matrix()
{
}

void gr_stub_end_projection_matrix()
{
}

void gr_stub_end_view_matrix()
{
}

void gr_stub_fade_in(int instantaneous)
{
}

void gr_stub_fade_out(int instantaneous)
{
}

void gr_stub_flash_alpha(int r, int g, int b, int a)
{
}

void gr_stub_flash(int r, int g, int b)
{
}

void gr_stub_flip()
{
}

void gr_stub_fog_set(int fog_mode, int r, int g, int b, float fog_near, float fog_far)
{
}

void gr_stub_free_screen(int id)
{
}

void gr_stub_get_region(int front, int w, int h, ubyte *data)
{
	data = NULL;
}

void gr_stub_gradient(int x1,int y1,int x2,int y2, int resize_mode)
{
}

void gr_stub_line(int x1,int y1,int x2,int y2, int resize_mode = GR_RESIZE_NONE)
{
}

void gr_stub_modify_light(light* light, int idx, int priority)
{
}

void gr_stub_pixel(int x, int y, int resize_mode)
{
}

void gr_stub_pop_scale_matrix()
{
}

void gr_stub_pop_texture_matrix(int unit)
{
}

void gr_stub_preload_init()
{
}

void gr_stub_print_screen(const char *filename)
{
}

void gr_stub_push_scale_matrix(vec3d *scale_factor)
{
}

void gr_stub_push_texture_matrix(int unit)
{
}

void gr_stub_rect(int x, int y, int w, int h, int resize_mode)
{
}

void gr_stub_render_buffer(int start, const vertex_buffer *bufferp, int texi, int flags)
{
}

void gr_stub_reset_clip()
{
}

void gr_stub_reset_lighting()
{
}

void gr_stub_restore_screen(int id)
{
}

void gr_stub_save_mouse_area(int x, int y, int w, int h)
{
}

void gr_stub_scaler(vertex *va, vertex *vb, bool bw_bitmap )
{
}

void gr_stub_set_additive_tex_env()
{
}

void gr_stub_set_buffer(int idx)
{
}

int gr_stub_create_stream_buffer()
{
	return -1;
}

void gr_stub_update_stream_buffer(int buffer, effect_vertex *buffer_data, uint size)
{
}

void gr_stub_render_stream_buffer(int offset, int n_verts, int flags)
{
}

void gr_stub_render_stream_buffer_start(int buffer_id)
{
}

void gr_stub_render_stream_buffer_end()
{
}

void gr_stub_set_clear_color(int r, int g, int b)
{
}

void gr_stub_set_clip(int x, int y, int w, int h, int resize_mode)
{
}

int gr_stub_set_cull(int cull)
{
	return 0;
}

int gr_stub_set_color_buffer(int mode)
{
	return 0;
}

void gr_stub_set_gamma(float gamma)
{
}

void gr_stub_set_lighting(bool set, bool state)
{
}

void gr_stub_set_light(light *light)
{
}

void gr_stub_set_palette(ubyte *new_palette, int is_alphacolor)
{
}

void gr_stub_set_projection_matrix(float fov, float aspect, float z_near, float z_far)
{
}

void gr_stub_set_tex_env_scale(float scale)
{
}

void gr_stub_set_texture_addressing(int mode)
{
}

void gr_stub_set_view_matrix(vec3d *pos, matrix* orient)
{
}

void gr_stub_start_clip_plane()
{
}

void gr_stub_start_instance_angles(vec3d *pos, angles* rotation)
{
}

void gr_stub_start_instance_matrix(vec3d *offset, matrix* rotation)
{
}

void gr_stub_string( int sx, int sy, const char *s, int resize_mode = GR_RESIZE_NONE)
{
}

void gr_stub_stuff_fog_coord(vertex *v)
{
}

void gr_stub_stuff_secondary_color(vertex *v, ubyte fr, ubyte fg, ubyte fb)
{
}

void gr_stub_tmapper( int nverts, vertex **verts, uint flags )
{
}

void gr_stub_render( int nverts, vertex *verts, uint flags )
{
}

void gr_stub_render_effect( int nverts, vertex *verts, float *radius_list, uint flag)
{
}

void gr_stub_translate_texture_matrix(int unit, vec3d *shift)
{
}

void gr_stub_zbias_stub(int bias)
{
}

void gr_stub_zbuffer_clear(int mode)
{
}

int gr_stub_stencil_set(int mode)
{
	return 0;
}

void gr_stub_stencil_clear()
{
}

int gr_stub_alpha_mask_set(int mode, float alpha)
{
	return 0;
}

/*void gr_stub_shade(int x,int y,int w,int h)
{
}*/

void gr_stub_post_process_set_effect(const char *name, int x)
{
}

void gr_stub_post_process_set_defaults()
{
}

void gr_stub_post_process_save_zbuffer()
{
}

void gr_stub_post_process_begin()
{
}

void gr_stub_post_process_end()
{
}

void gr_stub_scene_texture_begin()
{
}

void gr_stub_scene_texture_end()
{
}

void gr_stub_set_ambient_light(int red, int green, int blue)
{
}

void gr_stub_set_texture_panning(float u, float v, bool enable)
{
}

void gr_stub_setup_background_fog(bool set)
{
}

void gr_stub_start_state_block()
{
	gr_screen.recording_state_block = false;
}

int gr_stub_end_state_block()
{
	return -1;
}

void gr_stub_set_state_block(int handle)
{
}

void gr_stub_set_line_width(float width)
{
}

void gr_stub_draw_htl_line(vec3d *start, vec3d* end)
{
}

void gr_stub_draw_htl_sphere(float rad)
{
}

void gr_stub_draw_line_list(colored_vector *lines, int num)
{
}

void gr_stub_flush_data_states()
{
}

void gr_stub_update_texture(int bitmap_handle, int bpp, ubyte* data, int width, int height)
{
}

// bitmap functions
int gr_stub_bm_load(ubyte type, int n, const char *filename, CFILE *img_cfp, int *w, int *h, int *bpp, ubyte *c_type, int *mm_lvl, int *size)
{
	int dds_ct;

	if (type == BM_TYPE_DDS) {
		int dds_error = dds_read_header( filename, img_cfp, w, h, bpp, &dds_ct, mm_lvl, size );
		if (dds_error != DDS_ERROR_NONE) {
			mprintf(("DDS ERROR: Couldn't open '%s' -- %s\n", filename, dds_error_string(dds_error)));
			return -1;
		}

		switch (dds_ct) {
			case DDS_DXT1:
				*c_type = BM_TYPE_DXT1;
				break;

			case DDS_DXT3:
				*c_type = BM_TYPE_DXT3;
				break;

			case DDS_DXT5:
				*c_type = BM_TYPE_DXT5;
				break;

			case DDS_UNCOMPRESSED:
				*c_type = BM_TYPE_DDS;
				break;

			case DDS_CUBEMAP_DXT1:
				*c_type = BM_TYPE_CUBEMAP_DXT1;
				break;

			case DDS_CUBEMAP_DXT3:
				*c_type = BM_TYPE_CUBEMAP_DXT3;
				break;

			case DDS_CUBEMAP_DXT5:
				*c_type = BM_TYPE_CUBEMAP_DXT5;
				break;

			case DDS_CUBEMAP_UNCOMPRESSED:
				*c_type = BM_TYPE_CUBEMAP_DDS;
				break;

			default:
				Error(LOCATION, "bad DDS file compression.  Not using DXT1,3,5 %s", filename);
				return -1;
		}
	}
	// if its a tga file
	else if (type == BM_TYPE_TGA) {
		int tga_error = targa_read_header( filename, img_cfp, w, h, bpp, NULL );
		if ( tga_error != TARGA_ERROR_NONE )	{
			mprintf(( "tga: Couldn't open '%s'\n", filename ));
			return -1;
		}
	}
 	// if its a png file
 	else if (type == BM_TYPE_PNG) {
 		int png_error=png_read_header( filename, img_cfp, w, h, bpp, NULL );
 		if ( png_error != PNG_ERROR_NONE ) {
 			mprintf(( "png: Couldn't open '%s'\n", filename ));
 			return -1;
 		}
 	}
	// if its a jpg file
	else if (type == BM_TYPE_JPG) {
		int jpg_error=jpeg_read_header( filename, img_cfp, w, h, bpp, NULL );
		if ( jpg_error != JPEG_ERROR_NONE ) {
			mprintf(( "jpg: Couldn't open '%s'\n", filename ));
			return -1;
		}
	}
	// if its a pcx file
	else if (type == BM_TYPE_PCX) {
		int pcx_error = pcx_read_header( filename, img_cfp, w, h, bpp, NULL );
		if ( pcx_error != PCX_ERROR_NONE )	{
			mprintf(( "pcx: Couldn't open '%s'\n", filename ));
			return -1;
		}
	} else {
		Assert( 0 );

		return -1;
	}

	return 0;
}

int gr_stub_bm_lock(const char *filename, int handle, int bitmapnum, ubyte bpp, ubyte flags, bool nodebug)
{
	ubyte c_type = BM_TYPE_NONE;
	ubyte true_bpp;

	bitmap_entry *be = &bm_bitmaps[bitmapnum];
	bitmap *bmp = &be->bm;

	true_bpp = 8;

	// don't do a bpp check here since it could be different in OGL - taylor
	if ( bmp->data == 0 ) {
		Assert(be->ref_count == 1);

		if ( be->type != BM_TYPE_USER ) {
			if ( bmp->data == 0 ) {
				nprintf (("BmpMan","Loading %s for the first time.\n", be->filename));
			}
		}

		if ( !Bm_paging )	{
			if ( be->type != BM_TYPE_USER ) {
				nprintf(( "Paging", "Loading %s (%dx%dx%d)\n", be->filename, bmp->w, bmp->h, true_bpp ));
			}
		}

		// select proper format
		if(flags & BMP_AABITMAP){
			BM_SELECT_ALPHA_TEX_FORMAT();
		} else if(flags & BMP_TEX_ANY){
			BM_SELECT_TEX_FORMAT();
		} else {
			BM_SELECT_SCREEN_FORMAT();
		}

		// make sure we use the real graphic type for EFFs
		if ( be->type == BM_TYPE_EFF ) {
			c_type = be->info.ani.eff.type;
		} else {
			c_type = be->type;
		}

		switch ( c_type ) {
			case BM_TYPE_PCX:
				bm_lock_pcx( handle, bitmapnum, be, bmp, true_bpp, flags );
				break;

			case BM_TYPE_ANI:
				bm_lock_ani( handle, bitmapnum, be, bmp, true_bpp, flags );
				break;

			case BM_TYPE_TGA:
				bm_lock_tga( handle, bitmapnum, be, bmp, true_bpp, flags );
				break;

 			case BM_TYPE_PNG:
 				bm_lock_png( handle, bitmapnum, be, bmp, bmp->true_bpp, flags );
 				break;

			case BM_TYPE_JPG:
				bm_lock_jpg( handle, bitmapnum, be, bmp, bmp->true_bpp, flags );
				break;

			case BM_TYPE_DDS:
			case BM_TYPE_DXT1:
			case BM_TYPE_DXT3:
			case BM_TYPE_DXT5:
			case BM_TYPE_CUBEMAP_DDS:
			case BM_TYPE_CUBEMAP_DXT1:
			case BM_TYPE_CUBEMAP_DXT3:
			case BM_TYPE_CUBEMAP_DXT5:
				bm_lock_dds( handle, bitmapnum, be, bmp, true_bpp, flags );
				break;

			case BM_TYPE_USER:
				bm_lock_user( handle, bitmapnum, be, bmp, true_bpp, flags );
				break;

			default:
				Warning(LOCATION, "Unsupported type in bm_lock -- %d\n", c_type );
				return -1;
		}

		// always go back to screen format
		BM_SELECT_SCREEN_FORMAT();
	}

	// make sure we actually did something
	if ( !(bmp->data) ) {
		// crap, bail...
		return -1;
	}

	return 0;
}
int gr_stub_bm_make_render_target(int n, int *width, int *height, ubyte *bpp, int *mm_lvl, int flags)
{
	return 0;
}

int gr_stub_bm_set_render_target(int n, int face)
{
	return 0;
}

void gr_stub_bm_create(int n)
{
}

void gr_stub_bm_free_data(int n, bool release)
{
}

void gr_stub_bm_init(int n)
{
}

void gr_stub_bm_page_in_start()
{
}

int gr_stub_maybe_create_shader(int flags) {
	return -1;
}

void gr_stub_set_team_color(const SCP_string &team, const SCP_string &secondaryteam, fix timestamp, int fadetime) {
}

void gr_stub_enable_team_color() {
}

void gr_stub_disable_team_color() {
}

bool gr_stub_init()
{
	if (gr_screen.res != GR_640) {
		gr_screen.res = GR_640;
		gr_screen.max_w = 640;
		gr_screen.max_h = 480;
	}

	Gr_red.bits = 8;
	Gr_red.shift = 16;
	Gr_red.scale = 1;
	Gr_red.mask = 0xff0000;
	Gr_t_red = Gr_red;

	Gr_green.bits = 8;
	Gr_green.shift = 8;
	Gr_green.scale = 1;
	Gr_green.mask = 0xff00;
	Gr_t_green = Gr_green;

	Gr_blue.bits = 8;
	Gr_blue.shift = 0;
	Gr_blue.scale = 1;
	Gr_blue.mask = 0xff;
	Gr_t_blue = Gr_blue;

	// function pointers...
	gr_screen.gf_flip				= gr_stub_flip;
	gr_screen.gf_set_clip			= gr_stub_set_clip;
	gr_screen.gf_reset_clip			= gr_stub_reset_clip;

	gr_screen.gf_clear				= gr_stub_clear;
//	gr_screen.gf_bitmap				= gr_stub_bitmap;
	gr_screen.gf_bitmap_ex			= gr_stub_bitmap_ex;
	gr_screen.gf_aabitmap			= gr_stub_aabitmap;
	gr_screen.gf_aabitmap_ex		= gr_stub_aabitmap_ex;

//	gr_screen.gf_rect				= gr_stub_rect;
//	gr_screen.gf_shade				= gr_stub_shade;
	gr_screen.gf_string				= gr_stub_string;
	gr_screen.gf_circle				= gr_stub_circle;
	gr_screen.gf_unfilled_circle	= gr_stub_unfilled_circle;
	gr_screen.gf_curve				= gr_stub_curve;

	gr_screen.gf_line				= gr_stub_line;
	gr_screen.gf_aaline				= gr_stub_aaline;
	gr_screen.gf_pixel				= gr_stub_pixel;
	gr_screen.gf_scaler				= gr_stub_scaler;
	gr_screen.gf_tmapper			= gr_stub_tmapper;
	gr_screen.gf_render				= gr_stub_render;
	gr_screen.gf_render_effect		= gr_stub_render_effect;

	gr_screen.gf_gradient			= gr_stub_gradient;

	gr_screen.gf_set_palette		= gr_stub_set_palette;
	gr_screen.gf_print_screen		= gr_stub_print_screen;

	gr_screen.gf_fade_in			= gr_stub_fade_in;
	gr_screen.gf_fade_out			= gr_stub_fade_out;
	gr_screen.gf_flash				= gr_stub_flash;
	gr_screen.gf_flash_alpha		= gr_stub_flash_alpha;

	gr_screen.gf_zbuffer_get		= gr_stub_zbuffer_get;
	gr_screen.gf_zbuffer_set		= gr_stub_zbuffer_set;
	gr_screen.gf_zbuffer_clear		= gr_stub_zbuffer_clear;

	gr_screen.gf_stencil_set		= gr_stub_stencil_set;
	gr_screen.gf_stencil_clear		= gr_stub_stencil_clear;

	gr_screen.gf_alpha_mask_set		= gr_stub_alpha_mask_set;

	gr_screen.gf_save_screen		= gr_stub_save_screen;
	gr_screen.gf_restore_screen		= gr_stub_restore_screen;
	gr_screen.gf_free_screen		= gr_stub_free_screen;

	gr_screen.gf_dump_frame_start	= gr_stub_dump_frame_start;
	gr_screen.gf_dump_frame_stop	= gr_stub_dump_frame_stop;
	gr_screen.gf_dump_frame			= gr_stub_dump_frame;

	gr_screen.gf_set_gamma			= gr_stub_set_gamma;

	gr_screen.gf_fog_set			= gr_stub_fog_set;

	// UnknownPlayer : Don't recognize this - MAY NEED DEBUGGING
	gr_screen.gf_get_region			= gr_stub_get_region;

	// now for the bitmap functions
	gr_screen.gf_bm_free_data			= gr_stub_bm_free_data;
	gr_screen.gf_bm_create				= gr_stub_bm_create;
	gr_screen.gf_bm_init				= gr_stub_bm_init;
	gr_screen.gf_bm_load				= gr_stub_bm_load;
	gr_screen.gf_bm_page_in_start		= gr_stub_bm_page_in_start;
	gr_screen.gf_bm_lock				= gr_stub_bm_lock;
	gr_screen.gf_bm_make_render_target	= gr_stub_bm_make_render_target;
	gr_screen.gf_bm_set_render_target	= gr_stub_bm_set_render_target;

	gr_screen.gf_set_cull			= gr_stub_set_cull;
	gr_screen.gf_set_color_buffer	= gr_stub_set_color_buffer;

	gr_screen.gf_cross_fade			= gr_stub_cross_fade;

	gr_screen.gf_tcache_set			= gr_stub_tcache_set;

	gr_screen.gf_set_clear_color	= gr_stub_set_clear_color;

	gr_screen.gf_preload			= gr_stub_preload;

	gr_screen.gf_push_texture_matrix		= gr_stub_push_texture_matrix;
	gr_screen.gf_pop_texture_matrix			= gr_stub_pop_texture_matrix;
	gr_screen.gf_translate_texture_matrix	= gr_stub_translate_texture_matrix;

	gr_screen.gf_set_texture_addressing	= gr_stub_set_texture_addressing;
	gr_screen.gf_zbias					= gr_stub_zbias_stub;
	gr_screen.gf_set_fill_mode			= gr_set_fill_mode_stub;
	gr_screen.gf_set_texture_panning	= gr_stub_set_texture_panning;

	gr_screen.gf_create_buffer		= gr_stub_create_buffer;
	gr_screen.gf_config_buffer		= gr_stub_config_buffer;
	gr_screen.gf_pack_buffer		= gr_stub_pack_buffer;
	gr_screen.gf_destroy_buffer		= gr_stub_destroy_buffer;
	gr_screen.gf_render_buffer		= gr_stub_render_buffer;
	gr_screen.gf_set_buffer			= gr_stub_set_buffer;

	gr_screen.gf_create_stream_buffer		= gr_stub_create_stream_buffer;
	gr_screen.gf_update_stream_buffer		= gr_stub_update_stream_buffer;
	gr_screen.gf_render_stream_buffer		= gr_stub_render_stream_buffer;
	gr_screen.gf_render_stream_buffer_start	= gr_stub_render_stream_buffer_start;
	gr_screen.gf_render_stream_buffer_end	= gr_stub_render_stream_buffer_end;

	gr_screen.gf_start_instance_matrix			= gr_stub_start_instance_matrix;
	gr_screen.gf_end_instance_matrix			= gr_stub_end_instance_matrix;
	gr_screen.gf_start_angles_instance_matrix	= gr_stub_start_instance_angles;

	gr_screen.gf_make_light			= gr_stub_make_light;
	gr_screen.gf_modify_light		= gr_stub_modify_light;
	gr_screen.gf_destroy_light		= gr_stub_destroy_light;
	gr_screen.gf_set_light			= gr_stub_set_light;
	gr_screen.gf_reset_lighting		= gr_stub_reset_lighting;
	gr_screen.gf_set_ambient_light	= gr_stub_set_ambient_light;

	gr_screen.gf_post_process_set_effect	= gr_stub_post_process_set_effect;
	gr_screen.gf_post_process_set_defaults	= gr_stub_post_process_set_defaults;

	gr_screen.gf_post_process_begin		= gr_stub_post_process_begin;
	gr_screen.gf_post_process_end		= gr_stub_post_process_end;
	gr_screen.gf_post_process_save_zbuffer	= gr_stub_post_process_save_zbuffer;

	gr_screen.gf_scene_texture_begin = gr_stub_scene_texture_begin;
	gr_screen.gf_scene_texture_end = gr_stub_scene_texture_end;

	gr_screen.gf_start_clip_plane	= gr_stub_start_clip_plane;
	gr_screen.gf_end_clip_plane		= gr_stub_end_clip_plane;

	gr_screen.gf_lighting			= gr_stub_set_lighting;

	gr_screen.gf_set_proj_matrix	= gr_stub_set_projection_matrix;
	gr_screen.gf_end_proj_matrix	= gr_stub_end_projection_matrix;

	gr_screen.gf_set_view_matrix	= gr_stub_set_view_matrix;
	gr_screen.gf_end_view_matrix	= gr_stub_end_view_matrix;

	gr_screen.gf_push_scale_matrix	= gr_stub_push_scale_matrix;
	gr_screen.gf_pop_scale_matrix	= gr_stub_pop_scale_matrix;
	gr_screen.gf_center_alpha		= gr_stub_center_alpha;

	gr_screen.gf_setup_background_fog	= gr_stub_setup_background_fog;

	gr_screen.gf_start_state_block	= gr_stub_start_state_block;
	gr_screen.gf_end_state_block	= gr_stub_end_state_block;
	gr_screen.gf_set_state_block	= gr_stub_set_state_block;

	gr_screen.gf_draw_line_list		= gr_stub_draw_line_list;

	gr_screen.gf_set_line_width		= gr_stub_set_line_width;

	gr_screen.gf_line_htl			= gr_stub_draw_htl_line;
	gr_screen.gf_sphere_htl			= gr_stub_draw_htl_sphere;

	gr_screen.gf_maybe_create_shader = gr_stub_maybe_create_shader;

	gr_screen.gf_flush_data_states	= gr_stub_flush_data_states;

	gr_screen.gf_set_team_color		= gr_stub_set_team_color;
	gr_screen.gf_enable_team_color  = gr_stub_enable_team_color;
	gr_screen.gf_disable_team_color = gr_stub_disable_team_color;

	gr_screen.gf_update_texture = gr_stub_update_texture;
	return true;
}