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-rw-r--r--contrib/SDL-3.2.8/test/testgles.c334
1 files changed, 334 insertions, 0 deletions
diff --git a/contrib/SDL-3.2.8/test/testgles.c b/contrib/SDL-3.2.8/test/testgles.c
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1/*
2 Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
3
4 This software is provided 'as-is', without any express or implied
5 warranty. In no event will the authors be held liable for any damages
6 arising from the use of this software.
7
8 Permission is granted to anyone to use this software for any purpose,
9 including commercial applications, and to alter it and redistribute it
10 freely.
11*/
12#include <stdlib.h>
13
14#include <SDL3/SDL_test_common.h>
15#include <SDL3/SDL_main.h>
16
17#if defined(SDL_PLATFORM_IOS) || defined(SDL_PLATFORM_ANDROID)
18#define HAVE_OPENGLES
19#endif
20
21#ifdef HAVE_OPENGLES
22
23#include <SDL3/SDL_opengles.h>
24
25static SDLTest_CommonState *state;
26static SDL_GLContext *context = NULL;
27static int depth = 16;
28
29/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
30static void
31quit(int rc)
32{
33 int i;
34
35 if (context) {
36 for (i = 0; i < state->num_windows; i++) {
37 if (context[i]) {
38 SDL_GL_DestroyContext(context[i]);
39 }
40 }
41
42 SDL_free(context);
43 }
44
45 SDLTest_CommonQuit(state);
46 /* Let 'main()' return normally */
47 if (rc != 0) {
48 exit(rc);
49 }
50}
51
52static void
53Render(void)
54{
55 static GLubyte color[8][4] = { { 255, 0, 0, 0 },
56 { 255, 0, 0, 255 },
57 { 0, 255, 0, 255 },
58 { 0, 255, 0, 255 },
59 { 0, 255, 0, 255 },
60 { 255, 255, 255, 255 },
61 { 255, 0, 255, 255 },
62 { 0, 0, 255, 255 } };
63 static GLfloat cube[8][3] = { { 0.5, 0.5, -0.5 },
64 { 0.5f, -0.5f, -0.5f },
65 { -0.5f, -0.5f, -0.5f },
66 { -0.5f, 0.5f, -0.5f },
67 { -0.5f, 0.5f, 0.5f },
68 { 0.5f, 0.5f, 0.5f },
69 { 0.5f, -0.5f, 0.5f },
70 { -0.5f, -0.5f, 0.5f } };
71 static GLubyte indices[36] = { 0, 3, 4,
72 4, 5, 0,
73 0, 5, 6,
74 6, 1, 0,
75 6, 7, 2,
76 2, 1, 6,
77 7, 4, 3,
78 3, 2, 7,
79 5, 4, 7,
80 7, 6, 5,
81 2, 3, 1,
82 3, 0, 1 };
83
84 /* Do our drawing, too. */
85 glClearColor(0.0, 0.0, 0.0, 1.0);
86 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
87
88 /* Draw the cube */
89 glColorPointer(4, GL_UNSIGNED_BYTE, 0, color);
90 glEnableClientState(GL_COLOR_ARRAY);
91 glVertexPointer(3, GL_FLOAT, 0, cube);
92 glEnableClientState(GL_VERTEX_ARRAY);
93 glDrawElements(GL_TRIANGLES, 36, GL_UNSIGNED_BYTE, indices);
94
95 glMatrixMode(GL_MODELVIEW);
96 glRotatef(5.0, 1.0, 1.0, 1.0);
97}
98
99int main(int argc, char *argv[])
100{
101 int fsaa, accel;
102 int value;
103 int i, done;
104 const SDL_DisplayMode *mode;
105 SDL_Event event;
106 Uint32 then, now, frames;
107
108 /* Initialize parameters */
109 fsaa = 0;
110 accel = 0;
111
112 /* Initialize test framework */
113 state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
114 if (!state) {
115 return 1;
116 }
117
118 for (i = 1; i < argc;) {
119 int consumed;
120
121 consumed = SDLTest_CommonArg(state, i);
122 if (consumed == 0) {
123 if (SDL_strcasecmp(argv[i], "--fsaa") == 0) {
124 ++fsaa;
125 consumed = 1;
126 } else if (SDL_strcasecmp(argv[i], "--accel") == 0) {
127 ++accel;
128 consumed = 1;
129 } else if (SDL_strcasecmp(argv[i], "--zdepth") == 0) {
130 i++;
131 if (!argv[i]) {
132 consumed = -1;
133 } else {
134 char *endptr = NULL;
135 depth = (int)SDL_strtol(argv[i], &endptr, 0);
136 if (endptr != argv[i] && *endptr == '\0') {
137 consumed = 1;
138 } else {
139 consumed = -1;
140 }
141 }
142 } else {
143 consumed = -1;
144 }
145 }
146 if (consumed < 0) {
147 static const char *options[] = { "[--fsaa]", "[--accel]", "[--zdepth %d]", NULL };
148 SDLTest_CommonLogUsage(state, argv[0], options);
149 quit(1);
150 }
151 i += consumed;
152 }
153
154 /* Set OpenGL parameters */
155 state->window_flags |= SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_BORDERLESS;
156 state->gl_red_size = 5;
157 state->gl_green_size = 5;
158 state->gl_blue_size = 5;
159 state->gl_depth_size = depth;
160 state->gl_major_version = 1;
161 state->gl_minor_version = 1;
162 state->gl_profile_mask = SDL_GL_CONTEXT_PROFILE_ES;
163 if (fsaa) {
164 state->gl_multisamplebuffers = 1;
165 state->gl_multisamplesamples = fsaa;
166 }
167 if (accel) {
168 state->gl_accelerated = 1;
169 }
170 if (!SDLTest_CommonInit(state)) {
171 quit(2);
172 }
173
174 context = (SDL_GLContext *)SDL_calloc(state->num_windows, sizeof(*context));
175 if (!context) {
176 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Out of memory!");
177 quit(2);
178 }
179
180 /* Create OpenGL ES contexts */
181 for (i = 0; i < state->num_windows; i++) {
182 context[i] = SDL_GL_CreateContext(state->windows[i]);
183 if (!context[i]) {
184 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_GL_CreateContext(): %s", SDL_GetError());
185 quit(2);
186 }
187 }
188
189 SDL_GL_SetSwapInterval(state->render_vsync);
190
191 mode = SDL_GetCurrentDisplayMode(SDL_GetPrimaryDisplay());
192 if (mode) {
193 SDL_Log("Screen bpp: %d", SDL_BITSPERPIXEL(mode->format));
194 SDL_Log("%s", "");
195 }
196 SDL_Log("Vendor : %s", glGetString(GL_VENDOR));
197 SDL_Log("Renderer : %s", glGetString(GL_RENDERER));
198 SDL_Log("Version : %s", glGetString(GL_VERSION));
199 SDL_Log("Extensions : %s", glGetString(GL_EXTENSIONS));
200 SDL_Log("%s", "");
201
202 if (SDL_GL_GetAttribute(SDL_GL_RED_SIZE, &value)) {
203 SDL_Log("SDL_GL_RED_SIZE: requested %d, got %d", 5, value);
204 } else {
205 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_RED_SIZE: %s",
206 SDL_GetError());
207 }
208 if (SDL_GL_GetAttribute(SDL_GL_GREEN_SIZE, &value)) {
209 SDL_Log("SDL_GL_GREEN_SIZE: requested %d, got %d", 5, value);
210 } else {
211 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_GREEN_SIZE: %s",
212 SDL_GetError());
213 }
214 if (SDL_GL_GetAttribute(SDL_GL_BLUE_SIZE, &value)) {
215 SDL_Log("SDL_GL_BLUE_SIZE: requested %d, got %d", 5, value);
216 } else {
217 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_BLUE_SIZE: %s",
218 SDL_GetError());
219 }
220 if (SDL_GL_GetAttribute(SDL_GL_DEPTH_SIZE, &value)) {
221 SDL_Log("SDL_GL_DEPTH_SIZE: requested %d, got %d", depth, value);
222 } else {
223 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_DEPTH_SIZE: %s",
224 SDL_GetError());
225 }
226 if (fsaa) {
227 if (SDL_GL_GetAttribute(SDL_GL_MULTISAMPLEBUFFERS, &value)) {
228 SDL_Log("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d", value);
229 } else {
230 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_MULTISAMPLEBUFFERS: %s",
231 SDL_GetError());
232 }
233 if (SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &value)) {
234 SDL_Log("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d", fsaa,
235 value);
236 } else {
237 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_MULTISAMPLESAMPLES: %s",
238 SDL_GetError());
239 }
240 }
241 if (accel) {
242 if (SDL_GL_GetAttribute(SDL_GL_ACCELERATED_VISUAL, &value)) {
243 SDL_Log("SDL_GL_ACCELERATED_VISUAL: requested 1, got %d", value);
244 } else {
245 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_ACCELERATED_VISUAL: %s",
246 SDL_GetError());
247 }
248 }
249
250 /* Set rendering settings for each context */
251 for (i = 0; i < state->num_windows; ++i) {
252 float aspectAdjust;
253
254 if (!SDL_GL_MakeCurrent(state->windows[i], context[i])) {
255 SDL_Log("SDL_GL_MakeCurrent(): %s", SDL_GetError());
256
257 /* Continue for next window */
258 continue;
259 }
260
261 aspectAdjust = (4.0f / 3.0f) / ((float)state->window_w / state->window_h);
262 glViewport(0, 0, state->window_w, state->window_h);
263 glMatrixMode(GL_PROJECTION);
264 glLoadIdentity();
265 glOrthof(-2.0, 2.0, -2.0 * aspectAdjust, 2.0 * aspectAdjust, -20.0, 20.0);
266 glMatrixMode(GL_MODELVIEW);
267 glLoadIdentity();
268 glEnable(GL_DEPTH_TEST);
269 glDepthFunc(GL_LESS);
270 glShadeModel(GL_SMOOTH);
271 }
272
273 /* Main render loop */
274 frames = 0;
275 then = SDL_GetTicks();
276 done = 0;
277 while (!done) {
278 /* Check for events */
279 ++frames;
280 while (SDL_PollEvent(&event)) {
281 if (event.type == SDL_EVENT_WINDOW_RESIZED) {
282 for (i = 0; i < state->num_windows; ++i) {
283 if (event.window.windowID == SDL_GetWindowID(state->windows[i])) {
284 if (!SDL_GL_MakeCurrent(state->windows[i], context[i])) {
285 SDL_Log("SDL_GL_MakeCurrent(): %s", SDL_GetError());
286 break;
287 }
288 /* Change view port to the new window dimensions */
289 glViewport(0, 0, event.window.data1, event.window.data2);
290 /* Update window content */
291 Render();
292 SDL_GL_SwapWindow(state->windows[i]);
293 break;
294 }
295 }
296 }
297 SDLTest_CommonEvent(state, &event, &done);
298 }
299 for (i = 0; i < state->num_windows; ++i) {
300 if (state->windows[i] == NULL) {
301 continue;
302 }
303 if (!SDL_GL_MakeCurrent(state->windows[i], context[i])) {
304 SDL_Log("SDL_GL_MakeCurrent(): %s", SDL_GetError());
305
306 /* Continue for next window */
307 continue;
308 }
309 Render();
310 SDL_GL_SwapWindow(state->windows[i]);
311 }
312 }
313
314 /* Print out some timing information */
315 now = SDL_GetTicks();
316 if (now > then) {
317 SDL_Log("%2.2f frames per second",
318 ((double)frames * 1000) / (now - then));
319 }
320#ifndef SDL_PLATFORM_ANDROID
321 quit(0);
322#endif
323 return 0;
324}
325
326#else /* HAVE_OPENGLES */
327
328int main(int argc, char *argv[])
329{
330 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "No OpenGL ES support on this system");
331 return 1;
332}
333
334#endif /* HAVE_OPENGLES */
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