2 * Copyright (C) Volition, Inc. 1999. All rights reserved.
4 * All source code herein is the property of Volition, Inc. You may not sell
5 * or otherwise commercially exploit the source or things you created based on
14 #include "gropenglinternal.h"
15 #include "grinternal.h"
19 extern bool OGL_inited;
20 extern int GL_one_inited;
22 extern void opengl_set_variables();
23 extern void opengl_init_viewport();
26 static void wxgl_init_func_pointers()
28 gr_screen.gf_flip = gr_wxgl_flip;
29 gr_screen.gf_set_clip = gr_opengl1_set_clip;
30 gr_screen.gf_reset_clip = gr_opengl1_reset_clip;
32 gr_screen.gf_clear = gr_opengl1_clear;
34 gr_screen.gf_aabitmap = gr_opengl1_aabitmap;
35 gr_screen.gf_aabitmap_ex = gr_opengl1_aabitmap_ex;
37 gr_screen.gf_rect = gr_opengl1_rect;
38 gr_screen.gf_shade = gr_opengl1_shade;
39 gr_screen.gf_string = gr_opengl1_string;
40 gr_screen.gf_circle = gr_opengl1_circle;
42 gr_screen.gf_line = gr_opengl1_line;
43 gr_screen.gf_aaline = gr_opengl1_aaline;
44 gr_screen.gf_pixel = gr_opengl1_pixel;
45 gr_screen.gf_scaler = gr_opengl1_scaler;
46 gr_screen.gf_tmapper = gr_opengl1_tmapper;
48 gr_screen.gf_gradient = gr_opengl1_gradient;
50 gr_screen.gf_print_screen = gr_opengl1_print_screen;
52 gr_screen.gf_fade_in = gr_opengl1_fade_in;
53 gr_screen.gf_fade_out = gr_opengl1_fade_out;
54 gr_screen.gf_flash = gr_opengl1_flash;
56 gr_screen.gf_zbuffer_clear = gr_opengl1_zbuffer_clear;
58 gr_screen.gf_save_screen = gr_opengl1_save_screen;
59 gr_screen.gf_restore_screen = gr_opengl1_restore_screen;
60 gr_screen.gf_free_screen = gr_opengl1_free_screen;
62 gr_screen.gf_dump_frame_start = gr_opengl1_dump_frame_start;
63 gr_screen.gf_dump_frame_stop = gr_opengl1_dump_frame_stop;
64 gr_screen.gf_dump_frame = gr_opengl1_dump_frame;
66 gr_screen.gf_set_gamma = gr_opengl1_set_gamma;
68 gr_screen.gf_lock = gr_opengl1_lock;
69 gr_screen.gf_unlock = gr_opengl1_unlock;
71 gr_screen.gf_fog_set = gr_opengl1_fog_set;
73 gr_screen.gf_get_region = gr_opengl1_get_region;
75 gr_screen.gf_set_cull = gr_opengl1_set_cull;
77 gr_screen.gf_cross_fade = gr_opengl1_cross_fade;
79 gr_screen.gf_preload_init = gr_opengl1_preload_init;
80 gr_screen.gf_preload = gr_opengl1_preload;
82 gr_screen.gf_zbias = gr_opengl1_zbias;
84 gr_screen.gf_force_windowed = gr_opengl_force_windowed;
85 gr_screen.gf_force_fullscreen = gr_opengl_force_fullscreen;
86 gr_screen.gf_toggle_fullscreen = gr_opengl_toggle_fullscreen;
88 gr_screen.gf_set_viewport = gr_wxgl_set_viewport;
90 gr_screen.gf_activate = gr_opengl1_activate;
93 static void wxgl_init()
99 glShadeModel(GL_SMOOTH);
101 glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
102 glHint(GL_FOG_HINT, GL_NICEST);
104 glEnable(GL_DEPTH_TEST);
107 glEnable(GL_TEXTURE_2D);
109 glDepthRange(0.0, 1.0);
111 glPixelStorei(GL_PACK_ALIGNMENT, 1);
112 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
116 wxgl_init_func_pointers();
117 opengl1_tcache_init();
129 void gr_wxgl_set_viewport(int width, int height)
133 GL_viewport_w = width;
134 GL_viewport_h = height;
135 GL_viewport_scale_w = 1.0f;
136 GL_viewport_scale_h = 1.0f;
138 glViewport(GL_viewport_x, GL_viewport_y, GL_viewport_w, GL_viewport_h);
140 glMatrixMode(GL_PROJECTION);
142 glOrtho(0, GL_viewport_w, GL_viewport_h, 0, 0.0, 1.0);
143 glMatrixMode(GL_MODELVIEW);
145 glScalef(GL_viewport_scale_w, GL_viewport_scale_h, 1.0f);
147 // update gr_screen, which will deal with view scaling too
148 gr_screen.max_w = width;
149 gr_screen.max_h = height;
152 void gr_wxgl_cleanup()
164 mprintf(( "Setting up OpenGL for wxWidgets...\n" ));
168 const char *gl_version = (const char*)glGetString(GL_VERSION);
169 int v_major = 0, v_minor = 0;
171 sscanf(gl_version, "%d.%d", &v_major, &v_minor);
173 GL_version = (v_major * 10) + v_minor;
175 // version check, require 1.2+ for sake of simplicity
176 if (GL_version < 12) {
177 Error(LOCATION, "Minimum OpenGL version is 1.2!");
180 mprintf((" Vendor : %s\n", glGetString(GL_VENDOR)));
181 mprintf((" Renderer : %s\n", glGetString(GL_RENDERER)));
182 mprintf((" Version : %s\n", gl_version));
184 // initial viewport setup
185 opengl_init_viewport();
187 // set up generic variables before further init() calls
188 opengl_set_variables();
196 gr_screen.bits_per_pixel = 16;
197 gr_screen.bytes_per_pixel = 2;
203 Gr_red.mask = 0x7C00;
208 Gr_green.mask = 0x3E0;
217 Gr_alpha.scale = 255;
218 Gr_alpha.mask = 0x8000;
220 // DDOI - set these so no one else does!
221 // texture values, always 1555 - 16-bit
222 Gr_t_red.mask = 0x7C00;
226 Gr_t_green.mask = 0x3E0;
227 Gr_t_green.shift = 5;
228 Gr_t_green.scale = 8;
230 Gr_t_blue.mask = 0x1F;
234 Gr_t_alpha.mask = 0x8000;
235 Gr_t_alpha.scale = 255;
236 Gr_t_alpha.shift = 15;
238 // alpha-texture values
239 Gr_ta_red.mask = 0x0f00;
241 Gr_ta_red.scale = 16;
243 Gr_ta_green.mask = 0x00f0;
244 Gr_ta_green.shift = 4;
245 Gr_ta_green.scale = 16;
247 Gr_ta_blue.mask = 0x000f;
248 Gr_ta_blue.shift = 0;
249 Gr_ta_blue.scale = 16;
251 Gr_ta_alpha.mask = 0xf000;
252 Gr_ta_alpha.shift = 12;
253 Gr_ta_alpha.scale = 16;
256 Gr_current_red = &Gr_red;
257 Gr_current_blue = &Gr_blue;
258 Gr_current_green = &Gr_green;
259 Gr_current_alpha = &Gr_alpha;