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
9 #include "SDL_opengl.h"
15 #include "gropenglinternal.h"
17 #include "grinternal.h"
21 extern bool OGL_inited;
22 extern int GL_one_inited;
24 extern void opengl_set_variables();
25 extern void opengl_init_viewport();
28 static void wxgl_init_func_pointers()
30 gr_screen.gf_flip = gr_wxgl_flip;
31 gr_screen.gf_set_clip = gr_opengl1_set_clip;
32 gr_screen.gf_reset_clip = gr_opengl_reset_clip;
34 gr_screen.gf_clear = gr_opengl_clear;
36 gr_screen.gf_aabitmap = gr_opengl1_aabitmap;
37 gr_screen.gf_aabitmap_ex = gr_opengl1_aabitmap_ex;
39 gr_screen.gf_rect = gr_opengl1_rect;
40 gr_screen.gf_shade = gr_opengl1_shade;
41 gr_screen.gf_string = gr_opengl1_string;
42 gr_screen.gf_circle = gr_opengl1_circle;
44 gr_screen.gf_line = gr_opengl1_line;
45 gr_screen.gf_aaline = gr_opengl1_aaline;
46 gr_screen.gf_pixel = gr_opengl1_pixel;
47 gr_screen.gf_scaler = gr_opengl1_scaler;
48 gr_screen.gf_tmapper = gr_opengl1_tmapper;
50 gr_screen.gf_gradient = gr_opengl1_gradient;
52 gr_screen.gf_print_screen = gr_opengl1_print_screen;
54 gr_screen.gf_fade_in = gr_opengl1_fade_in;
55 gr_screen.gf_fade_out = gr_opengl1_fade_out;
56 gr_screen.gf_flash = gr_opengl1_flash;
58 gr_screen.gf_zbuffer_clear = gr_opengl1_zbuffer_clear;
60 gr_screen.gf_save_screen = gr_opengl1_save_screen;
61 gr_screen.gf_restore_screen = gr_opengl1_restore_screen;
62 gr_screen.gf_free_screen = gr_opengl1_free_screen;
64 gr_screen.gf_dump_frame_start = gr_opengl1_dump_frame_start;
65 gr_screen.gf_dump_frame_stop = gr_opengl1_dump_frame_stop;
66 gr_screen.gf_dump_frame = gr_opengl1_dump_frame;
68 gr_screen.gf_stream_start = gr_opengl1_stream_start;
69 gr_screen.gf_stream_frame = gr_opengl1_stream_frame;
70 gr_screen.gf_stream_stop = gr_opengl1_stream_stop;
72 gr_screen.gf_set_gamma = gr_opengl1_set_gamma;
74 gr_screen.gf_lock = gr_opengl_lock;
75 gr_screen.gf_unlock = gr_opengl_unlock;
77 gr_screen.gf_fog_set = gr_opengl1_fog_set;
79 gr_screen.gf_get_region = gr_opengl1_get_region;
81 gr_screen.gf_set_cull = gr_opengl_set_cull;
83 gr_screen.gf_cross_fade = gr_opengl1_cross_fade;
85 gr_screen.gf_preload_init = gr_opengl1_preload_init;
86 gr_screen.gf_preload = gr_opengl1_preload;
88 gr_screen.gf_zbias = gr_opengl_zbias;
90 gr_screen.gf_set_viewport = gr_wxgl_set_viewport;
92 gr_screen.gf_activate = gr_opengl_activate;
94 gr_screen.gf_release_texture = gr_opengl1_release_texture;
97 static void wxgl_init()
103 glShadeModel(GL_SMOOTH);
105 glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
106 glHint(GL_FOG_HINT, GL_NICEST);
108 glEnable(GL_DEPTH_TEST);
111 glEnable(GL_TEXTURE_2D);
113 glDepthRange(0.0, 1.0);
115 glPixelStorei(GL_PACK_ALIGNMENT, 1);
116 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
120 wxgl_init_func_pointers();
121 opengl1_tcache_init();
124 gr_opengl_set_cull(1);
133 GLenum error = glGetError();
135 if (error != GL_NO_ERROR) {
136 mprintf(("!!DEBUG!! OpenGL Error: %d\n", error));
141 void gr_wxgl_set_viewport(int width, int height)
145 GL_viewport_w = width;
146 GL_viewport_h = height;
147 GL_viewport_scale_w = 1.0f;
148 GL_viewport_scale_h = 1.0f;
150 glViewport(GL_viewport_x, GL_viewport_y, GL_viewport_w, GL_viewport_h);
152 glMatrixMode(GL_PROJECTION);
154 glOrtho(0, GL_viewport_w, GL_viewport_h, 0, 0.0, 1.0);
155 glMatrixMode(GL_MODELVIEW);
157 glScalef(GL_viewport_scale_w, GL_viewport_scale_h, 1.0f);
159 // update gr_screen, which will deal with view scaling too
160 gr_screen.max_w = width;
161 gr_screen.max_h = height;
164 void gr_wxgl_cleanup()
166 opengl1_tcache_cleanup();
168 opengl_free_render_buffer();
181 mprintf(( "Setting up OpenGL for wxWidgets...\n" ));
185 const char *gl_version = (const char*)glGetString(GL_VERSION);
186 int v_major = 0, v_minor = 0;
188 sscanf(gl_version, "%d.%d", &v_major, &v_minor);
190 int GL_version = (v_major * 10) + v_minor;
192 // version check, require 1.2+ for sake of simplicity
193 if (GL_version < 12) {
194 Error(LOCATION, "Minimum OpenGL version is 1.2!");
197 mprintf((" Vendor : %s\n", glGetString(GL_VENDOR)));
198 mprintf((" Renderer : %s\n", glGetString(GL_RENDERER)));
199 mprintf((" Version : %s\n", gl_version));
201 // initial viewport setup
202 opengl_init_viewport();
204 // set up generic variables before further init() calls
205 opengl_set_variables();
213 gr_screen.bits_per_pixel = 16;
214 gr_screen.bytes_per_pixel = 2;
220 Gr_red.mask = 0x7C01;
225 Gr_green.mask = 0x3E1;
234 Gr_alpha.scale = 255;
237 // DDOI - set these so no one else does!
238 // texture values, always 1555 - 16-bit
239 Gr_t_red.mask = 0x7C01;
243 Gr_t_green.mask = 0x3E1;
244 Gr_t_green.shift = 6;
245 Gr_t_green.scale = 8;
247 Gr_t_blue.mask = 0x20;
251 Gr_t_alpha.mask = 0x1;
252 Gr_t_alpha.shift = 0;
253 Gr_t_alpha.scale = 255;
255 // alpha-texture values
256 Gr_ta_red.mask = 0x0f00;
258 Gr_ta_red.scale = 16;
260 Gr_ta_green.mask = 0x00f0;
261 Gr_ta_green.shift = 4;
262 Gr_ta_green.scale = 16;
264 Gr_ta_blue.mask = 0x000f;
265 Gr_ta_blue.shift = 0;
266 Gr_ta_blue.scale = 16;
268 Gr_ta_alpha.mask = 0xf000;
269 Gr_ta_alpha.shift = 12;
270 Gr_ta_alpha.scale = 16;
273 Gr_current_red = &Gr_red;
274 Gr_current_blue = &Gr_blue;
275 Gr_current_green = &Gr_green;
276 Gr_current_alpha = &Gr_alpha;