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
11 #include "SDL_opengl.h"
17 #include "gropenglinternal.h"
19 #include "grinternal.h"
23 extern bool OGL_inited;
24 extern int GL_one_inited;
26 extern void opengl_set_variables();
27 extern void opengl_init_viewport();
30 static void wxgl_init_func_pointers()
32 gr_screen.gf_flip = gr_wxgl_flip;
33 gr_screen.gf_set_clip = gr_opengl1_set_clip;
34 gr_screen.gf_reset_clip = gr_opengl_reset_clip;
36 gr_screen.gf_clear = gr_opengl_clear;
38 gr_screen.gf_aabitmap = gr_opengl1_aabitmap;
39 gr_screen.gf_aabitmap_ex = gr_opengl1_aabitmap_ex;
41 gr_screen.gf_rect = gr_opengl1_rect;
42 gr_screen.gf_shade = gr_opengl1_shade;
43 gr_screen.gf_string = gr_opengl1_string;
44 gr_screen.gf_circle = gr_opengl1_circle;
46 gr_screen.gf_line = gr_opengl1_line;
47 gr_screen.gf_aaline = gr_opengl1_aaline;
48 gr_screen.gf_pixel = gr_opengl1_pixel;
49 gr_screen.gf_scaler = gr_opengl1_scaler;
50 gr_screen.gf_tmapper = gr_opengl1_tmapper;
52 gr_screen.gf_gradient = gr_opengl1_gradient;
54 gr_screen.gf_print_screen = gr_opengl1_print_screen;
56 gr_screen.gf_fade_in = gr_opengl1_fade_in;
57 gr_screen.gf_fade_out = gr_opengl1_fade_out;
58 gr_screen.gf_flash = gr_opengl1_flash;
60 gr_screen.gf_zbuffer_clear = gr_opengl1_zbuffer_clear;
62 gr_screen.gf_save_screen = gr_opengl1_save_screen;
63 gr_screen.gf_restore_screen = gr_opengl1_restore_screen;
64 gr_screen.gf_free_screen = gr_opengl1_free_screen;
66 gr_screen.gf_dump_frame_start = gr_opengl1_dump_frame_start;
67 gr_screen.gf_dump_frame_stop = gr_opengl1_dump_frame_stop;
68 gr_screen.gf_dump_frame = gr_opengl1_dump_frame;
70 gr_screen.gf_stream_start = gr_opengl1_stream_start;
71 gr_screen.gf_stream_frame = gr_opengl1_stream_frame;
72 gr_screen.gf_stream_stop = gr_opengl1_stream_stop;
74 gr_screen.gf_set_gamma = gr_opengl1_set_gamma;
76 gr_screen.gf_lock = gr_opengl_lock;
77 gr_screen.gf_unlock = gr_opengl_unlock;
79 gr_screen.gf_fog_set = gr_opengl1_fog_set;
81 gr_screen.gf_get_region = gr_opengl1_get_region;
83 gr_screen.gf_set_cull = gr_opengl_set_cull;
85 gr_screen.gf_cross_fade = gr_opengl1_cross_fade;
87 gr_screen.gf_preload_init = gr_opengl1_preload_init;
88 gr_screen.gf_preload = gr_opengl1_preload;
90 gr_screen.gf_zbias = gr_opengl_zbias;
92 gr_screen.gf_set_viewport = gr_wxgl_set_viewport;
94 gr_screen.gf_activate = gr_opengl_activate;
96 gr_screen.gf_release_texture = gr_opengl1_release_texture;
99 static void wxgl_init()
105 glShadeModel(GL_SMOOTH);
107 glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
108 glHint(GL_FOG_HINT, GL_NICEST);
110 glEnable(GL_DEPTH_TEST);
113 glEnable(GL_TEXTURE_2D);
115 glDepthRange(0.0, 1.0);
117 glPixelStorei(GL_PACK_ALIGNMENT, 1);
118 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
122 wxgl_init_func_pointers();
123 opengl1_tcache_init();
126 gr_opengl_set_cull(1);
135 GLenum error = glGetError();
137 if (error != GL_NO_ERROR) {
138 mprintf(("!!DEBUG!! OpenGL Error: %d\n", error));
143 void gr_wxgl_set_viewport(int width, int height)
147 GL_viewport_w = width;
148 GL_viewport_h = height;
149 GL_viewport_scale_w = 1.0f;
150 GL_viewport_scale_h = 1.0f;
152 glViewport(GL_viewport_x, GL_viewport_y, GL_viewport_w, GL_viewport_h);
154 glMatrixMode(GL_PROJECTION);
156 glOrtho(0, GL_viewport_w, GL_viewport_h, 0, 0.0, 1.0);
157 glMatrixMode(GL_MODELVIEW);
159 glScalef(GL_viewport_scale_w, GL_viewport_scale_h, 1.0f);
161 // update gr_screen, which will deal with view scaling too
162 gr_screen.max_w = width;
163 gr_screen.max_h = height;
166 void gr_wxgl_cleanup()
168 opengl1_tcache_cleanup();
170 opengl_free_render_buffer();
183 mprintf(( "Setting up OpenGL for wxWidgets...\n" ));
187 const char *gl_version = (const char*)glGetString(GL_VERSION);
188 int v_major = 0, v_minor = 0;
190 sscanf(gl_version, "%d.%d", &v_major, &v_minor);
192 int GL_version = (v_major * 10) + v_minor;
194 // version check, require 1.2+ for sake of simplicity
195 if (GL_version < 12) {
196 Error(LOCATION, "Minimum OpenGL version is 1.2!");
199 mprintf((" Vendor : %s\n", glGetString(GL_VENDOR)));
200 mprintf((" Renderer : %s\n", glGetString(GL_RENDERER)));
201 mprintf((" Version : %s\n", gl_version));
203 // initial viewport setup
204 opengl_init_viewport();
206 // set up generic variables before further init() calls
207 opengl_set_variables();
215 gr_screen.bits_per_pixel = 16;
216 gr_screen.bytes_per_pixel = 2;
222 Gr_red.mask = 0x7C01;
227 Gr_green.mask = 0x3E1;
236 Gr_alpha.scale = 255;
239 // DDOI - set these so no one else does!
240 // texture values, always 1555 - 16-bit
241 Gr_t_red.mask = 0x7C01;
245 Gr_t_green.mask = 0x3E1;
246 Gr_t_green.shift = 6;
247 Gr_t_green.scale = 8;
249 Gr_t_blue.mask = 0x20;
253 Gr_t_alpha.mask = 0x1;
254 Gr_t_alpha.shift = 0;
255 Gr_t_alpha.scale = 255;
257 // alpha-texture values
258 Gr_ta_red.mask = 0x0f00;
260 Gr_ta_red.scale = 16;
262 Gr_ta_green.mask = 0x00f0;
263 Gr_ta_green.shift = 4;
264 Gr_ta_green.scale = 16;
266 Gr_ta_blue.mask = 0x000f;
267 Gr_ta_blue.shift = 0;
268 Gr_ta_blue.scale = 16;
270 Gr_ta_alpha.mask = 0xf000;
271 Gr_ta_alpha.shift = 12;
272 Gr_ta_alpha.scale = 16;
275 Gr_current_red = &Gr_red;
276 Gr_current_blue = &Gr_blue;
277 Gr_current_green = &Gr_green;
278 Gr_current_alpha = &Gr_alpha;