Mercurial > sdl-ios-xcode
comparison test/testgles.c @ 2765:f55c87ae336b
Final merge of Google Summer of Code 2008 work...
Bring SDL to iPhone and iPod Touch
by Holmes Futrell, mentored by Sam Lantinga
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 04 Oct 2008 06:46:59 +0000 |
parents | |
children | 82e60908fab1 |
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2764:4868c0df2e83 | 2765:f55c87ae336b |
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1 #include <stdlib.h> | |
2 #include <stdio.h> | |
3 #include <string.h> | |
4 #include <math.h> | |
5 | |
6 #include "common.h" | |
7 | |
8 #ifdef __IPHONEOS__ | |
9 #define HAVE_OPENGLES | |
10 #endif | |
11 | |
12 #ifdef HAVE_OPENGLES | |
13 | |
14 #include "SDL_opengles.h" | |
15 | |
16 static CommonState *state; | |
17 static SDL_GLContext context; | |
18 | |
19 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ | |
20 static void | |
21 quit(int rc) | |
22 { | |
23 if (context) { | |
24 /* SDL_GL_MakeCurrent(0, NULL); *//* doesn't do anything */ | |
25 SDL_GL_DeleteContext(context); | |
26 } | |
27 CommonQuit(state); | |
28 exit(rc); | |
29 } | |
30 | |
31 static void | |
32 Render() | |
33 { | |
34 static GLubyte color[8][4] = { {255, 0, 0, 0}, | |
35 {255, 0, 0, 255}, | |
36 {0, 255, 0, 255}, | |
37 {0, 255, 0, 255}, | |
38 {0, 255, 0, 255}, | |
39 {255, 255, 255, 255}, | |
40 {255, 0, 255, 255}, | |
41 {0, 0, 255, 255} | |
42 }; | |
43 static GLfloat cube[8][3] = { {0.5, 0.5, -0.5}, | |
44 {0.5f, -0.5f, -0.5f}, | |
45 {-0.5f, -0.5f, -0.5f}, | |
46 {-0.5f, 0.5f, -0.5f}, | |
47 {-0.5f, 0.5f, 0.5f}, | |
48 {0.5f, 0.5f, 0.5f}, | |
49 {0.5f, -0.5f, 0.5f}, | |
50 {-0.5f, -0.5f, 0.5f} | |
51 }; | |
52 static GLubyte indices[36] = { 0, 3, 4, | |
53 4, 5, 0, | |
54 0, 5, 6, | |
55 6, 1, 0, | |
56 6, 7, 2, | |
57 2, 1, 6, | |
58 7, 4, 3, | |
59 3, 2, 7, | |
60 5, 4, 7, | |
61 7, 6, 5, | |
62 2, 3, 1, | |
63 3, 0, 1 | |
64 }; | |
65 | |
66 | |
67 /* Do our drawing, too. */ | |
68 glClearColor(0.0, 0.0, 0.0, 1.0); | |
69 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); | |
70 | |
71 /* Draw the cube */ | |
72 glColorPointer(4, GL_UNSIGNED_BYTE, 0, color); | |
73 glEnableClientState(GL_COLOR_ARRAY); | |
74 glVertexPointer(3, GL_FLOAT, 0, cube); | |
75 glEnableClientState(GL_VERTEX_ARRAY); | |
76 glDrawElements(GL_TRIANGLES, 36, GL_UNSIGNED_BYTE, indices); | |
77 | |
78 glMatrixMode(GL_MODELVIEW); | |
79 glRotatef(5.0, 1.0, 1.0, 1.0); | |
80 } | |
81 | |
82 int | |
83 main(int argc, char *argv[]) | |
84 { | |
85 int fsaa, accel; | |
86 int value; | |
87 int i, done; | |
88 SDL_DisplayMode mode; | |
89 SDL_Event event; | |
90 Uint32 then, now, frames; | |
91 | |
92 /* Initialize parameters */ | |
93 fsaa = 0; | |
94 accel = 0; | |
95 | |
96 /* Initialize test framework */ | |
97 state = CommonCreateState(argv, SDL_INIT_VIDEO); | |
98 if (!state) { | |
99 return 1; | |
100 } | |
101 for (i = 1; i < argc;) { | |
102 int consumed; | |
103 | |
104 consumed = CommonArg(state, i); | |
105 if (consumed == 0) { | |
106 if (SDL_strcasecmp(argv[i], "--fsaa") == 0) { | |
107 ++fsaa; | |
108 consumed = 1; | |
109 } else if (SDL_strcasecmp(argv[i], "--accel") == 0) { | |
110 ++accel; | |
111 consumed = 1; | |
112 } else { | |
113 consumed = -1; | |
114 } | |
115 } | |
116 if (consumed < 0) { | |
117 fprintf(stderr, "Usage: %s %s [--fsaa] [--accel]\n", argv[0], | |
118 CommonUsage(state)); | |
119 quit(1); | |
120 } | |
121 i += consumed; | |
122 } | |
123 | |
124 /* Set OpenGL parameters */ | |
125 state->window_flags |= SDL_WINDOW_OPENGL; | |
126 SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5); | |
127 SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5); | |
128 SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5); | |
129 SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16); | |
130 if (fsaa) { | |
131 SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1); | |
132 SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, fsaa); | |
133 } | |
134 if (accel) { | |
135 SDL_GL_SetAttribute(SDL_GL_ACCELERATED_VISUAL, 1); | |
136 } | |
137 if (!CommonInit(state)) { | |
138 quit(2); | |
139 } | |
140 | |
141 /* Create OpenGL context */ | |
142 context = SDL_GL_CreateContext(state->windows[0]); | |
143 if (!context) { | |
144 fprintf(stderr, "SDL_GL_CreateContext(): %s\n", SDL_GetError()); | |
145 quit(2); | |
146 } | |
147 | |
148 if (state->render_flags & SDL_RENDERER_PRESENTVSYNC) { | |
149 SDL_GL_SetSwapInterval(1); | |
150 } else { | |
151 SDL_GL_SetSwapInterval(0); | |
152 } | |
153 | |
154 SDL_GetCurrentDisplayMode(&mode); | |
155 printf("Screen BPP: %d\n", SDL_BITSPERPIXEL(mode.format)); | |
156 printf("\n"); | |
157 printf("Vendor : %s\n", glGetString(GL_VENDOR)); | |
158 printf("Renderer : %s\n", glGetString(GL_RENDERER)); | |
159 printf("Version : %s\n", glGetString(GL_VERSION)); | |
160 printf("Extensions : %s\n", glGetString(GL_EXTENSIONS)); | |
161 printf("\n"); | |
162 | |
163 SDL_GL_GetAttribute(SDL_GL_RED_SIZE, &value); | |
164 printf("SDL_GL_RED_SIZE: requested %d, got %d\n", 5, value); | |
165 SDL_GL_GetAttribute(SDL_GL_GREEN_SIZE, &value); | |
166 printf("SDL_GL_GREEN_SIZE: requested %d, got %d\n", 5, value); | |
167 SDL_GL_GetAttribute(SDL_GL_BLUE_SIZE, &value); | |
168 printf("SDL_GL_BLUE_SIZE: requested %d, got %d\n", 5, value); | |
169 SDL_GL_GetAttribute(SDL_GL_DEPTH_SIZE, &value); | |
170 printf("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", 16, value); | |
171 if (fsaa) { | |
172 SDL_GL_GetAttribute(SDL_GL_MULTISAMPLEBUFFERS, &value); | |
173 printf("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value); | |
174 SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &value); | |
175 printf("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa, | |
176 value); | |
177 } | |
178 if (accel) { | |
179 SDL_GL_GetAttribute(SDL_GL_ACCELERATED_VISUAL, &value); | |
180 printf("SDL_GL_ACCELERATED_VISUAL: requested 1, got %d\n", value); | |
181 } | |
182 | |
183 /* Set rendering settings */ | |
184 glMatrixMode(GL_PROJECTION); | |
185 glLoadIdentity(); | |
186 glOrthof(-2.0, 2.0, -2.0, 2.0, -20.0, 20.0); | |
187 glMatrixMode(GL_MODELVIEW); | |
188 glLoadIdentity(); | |
189 glEnable(GL_DEPTH_TEST); | |
190 glDepthFunc(GL_LESS); | |
191 glShadeModel(GL_SMOOTH); | |
192 | |
193 /* Main render loop */ | |
194 frames = 0; | |
195 then = SDL_GetTicks(); | |
196 done = 0; | |
197 while (!done) { | |
198 /* Check for events */ | |
199 ++frames; | |
200 while (SDL_PollEvent(&event)) { | |
201 CommonEvent(state, &event, &done); | |
202 } | |
203 for (i = 0; i < state->num_windows; ++i) { | |
204 int w, h; | |
205 SDL_GL_MakeCurrent(state->windows[i], context); | |
206 SDL_GetWindowSize(state->windows[i], &w, &h); | |
207 glViewport(0, 0, w, h); | |
208 Render(); | |
209 SDL_GL_SwapWindow(state->windows[i]); | |
210 } | |
211 } | |
212 | |
213 /* Print out some timing information */ | |
214 now = SDL_GetTicks(); | |
215 if (now > then) { | |
216 printf("%2.2f frames per second\n", | |
217 ((double) frames * 1000) / (now - then)); | |
218 } | |
219 quit(0); | |
220 return 0; | |
221 } | |
222 | |
223 #else /* HAVE_OPENGLES */ | |
224 | |
225 int | |
226 main(int argc, char *argv[]) | |
227 { | |
228 printf("No OpenGL ES support on this system\n"); | |
229 return 1; | |
230 } | |
231 | |
232 #endif /* HAVE_OPENGLES */ |