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d42e7319 JB |
1 | /* |
2 | * Copyright (c) 2012 Carsten Munk <carsten.munk@gmail.com> | |
3 | * | |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | * | |
16 | */ | |
17 | ||
18 | #include <EGL/egl.h> | |
19 | #include <GLES2/gl2.h> | |
20 | #include <assert.h> | |
21 | #include <stdio.h> | |
22 | #include <math.h> | |
23 | #include <stddef.h> | |
24 | #include <hwcomposer_window.h> | |
25 | #include <hardware/hardware.h> | |
26 | #include <hardware/hwcomposer.h> | |
27 | #include <malloc.h> | |
28 | #include <sync/sync.h> | |
29 | ||
30 | const char vertex_src [] = | |
31 | " \ | |
32 | attribute vec4 position; \ | |
33 | varying mediump vec2 pos; \ | |
34 | uniform vec4 offset; \ | |
35 | \ | |
36 | void main() \ | |
37 | { \ | |
38 | gl_Position = position + offset; \ | |
39 | pos = position.xy; \ | |
40 | } \ | |
41 | "; | |
42 | ||
43 | ||
44 | const char fragment_src [] = | |
45 | " \ | |
46 | varying mediump vec2 pos; \ | |
47 | uniform mediump float phase; \ | |
48 | \ | |
49 | void main() \ | |
50 | { \ | |
51 | gl_FragColor = vec4( 1., 0.9, 0.7, 1.0 ) * \ | |
52 | cos( 30.*sqrt(pos.x*pos.x + 1.5*pos.y*pos.y) \ | |
53 | + atan(pos.y,pos.x) - phase ); \ | |
54 | } \ | |
55 | "; | |
56 | ||
57 | GLuint load_shader(const char *shader_source, GLenum type) | |
58 | { | |
59 | GLuint shader = glCreateShader(type); | |
60 | ||
61 | glShaderSource(shader, 1, &shader_source, NULL); | |
62 | glCompileShader(shader); | |
63 | ||
64 | return shader; | |
65 | } | |
66 | ||
67 | ||
68 | GLfloat norm_x = 0.0; | |
69 | GLfloat norm_y = 0.0; | |
70 | GLfloat offset_x = 0.0; | |
71 | GLfloat offset_y = 0.0; | |
72 | GLfloat p1_pos_x = 0.0; | |
73 | GLfloat p1_pos_y = 0.0; | |
74 | ||
75 | GLint phase_loc; | |
76 | GLint offset_loc; | |
77 | GLint position_loc; | |
78 | ||
79 | const float vertexArray[] = { | |
80 | 0.0, 1.0, 0.0, | |
81 | -1., 0.0, 0.0, | |
82 | 0.0, -1.0, 0.0, | |
83 | 1., 0.0, 0.0, | |
84 | 0.0, 1., 0.0 | |
85 | }; | |
86 | ||
87 | ||
88 | int main(int argc, char **argv) | |
89 | { | |
90 | EGLDisplay display; | |
91 | EGLConfig ecfg; | |
92 | EGLint num_config; | |
93 | EGLint attr[] = { // some attributes to set up our egl-interface | |
94 | EGL_BUFFER_SIZE, 32, | |
95 | EGL_RENDERABLE_TYPE, | |
96 | EGL_OPENGL_ES2_BIT, | |
97 | EGL_NONE | |
98 | }; | |
99 | EGLSurface surface; | |
100 | EGLint ctxattr[] = { | |
101 | EGL_CONTEXT_CLIENT_VERSION, 2, | |
102 | EGL_NONE | |
103 | }; | |
104 | EGLContext context; | |
105 | ||
106 | EGLBoolean rv; | |
107 | ||
108 | int err; | |
109 | hw_module_t *hwcModule = 0; | |
110 | hwc_composer_device_1_t *hwcDevicePtr = 0; | |
111 | ||
112 | err = hw_get_module(HWC_HARDWARE_MODULE_ID, (const hw_module_t **) &hwcModule); | |
113 | assert(err == 0); | |
114 | ||
115 | err = hwc_open_1(hwcModule, &hwcDevicePtr); | |
116 | assert(err == 0); | |
117 | ||
118 | hwcDevicePtr->blank(hwcDevicePtr, 0, 0); | |
119 | ||
120 | uint32_t configs[5]; | |
121 | size_t numConfigs = 5; | |
122 | ||
123 | err = hwcDevicePtr->getDisplayConfigs(hwcDevicePtr, 0, configs, &numConfigs); | |
124 | assert (err == 0); | |
125 | ||
126 | int32_t attr_values[2]; | |
127 | uint32_t attributes[] = { HWC_DISPLAY_WIDTH, HWC_DISPLAY_HEIGHT, HWC_DISPLAY_NO_ATTRIBUTE }; | |
128 | ||
129 | hwcDevicePtr->getDisplayAttributes(hwcDevicePtr, 0, | |
130 | configs[0], attributes, attr_values); | |
131 | ||
132 | printf("width: %i height: %i\n", attr_values[0], attr_values[1]); | |
133 | ||
134 | HWComposerNativeWindow *win = new HWComposerNativeWindow(attr_values[0], attr_values[1], HAL_PIXEL_FORMAT_RGBA_8888); | |
135 | ||
136 | ||
137 | display = eglGetDisplay(NULL); | |
138 | assert(eglGetError() == EGL_SUCCESS); | |
139 | assert(display != EGL_NO_DISPLAY); | |
140 | ||
141 | rv = eglInitialize(display, 0, 0); | |
142 | assert(eglGetError() == EGL_SUCCESS); | |
143 | assert(rv == EGL_TRUE); | |
144 | ||
145 | eglChooseConfig((EGLDisplay) display, attr, &ecfg, 1, &num_config); | |
146 | assert(eglGetError() == EGL_SUCCESS); | |
147 | assert(rv == EGL_TRUE); | |
148 | ||
149 | surface = eglCreateWindowSurface((EGLDisplay) display, ecfg, (EGLNativeWindowType) static_cast<ANativeWindow *> (win), NULL); | |
150 | assert(eglGetError() == EGL_SUCCESS); | |
151 | assert(surface != EGL_NO_SURFACE); | |
152 | ||
153 | context = eglCreateContext((EGLDisplay) display, ecfg, EGL_NO_CONTEXT, ctxattr); | |
154 | assert(eglGetError() == EGL_SUCCESS); | |
155 | assert(context != EGL_NO_CONTEXT); | |
156 | ||
157 | assert(eglMakeCurrent((EGLDisplay) display, surface, surface, context) == EGL_TRUE); | |
158 | ||
159 | const char *version = (const char *)glGetString(GL_VERSION); | |
160 | assert(version); | |
161 | printf("%s\n",version); | |
162 | ||
163 | size_t size = sizeof(hwc_display_contents_1_t) + 2 * sizeof(hwc_layer_1_t); | |
164 | hwc_display_contents_1_t *list = (hwc_display_contents_1_t *) malloc(size); | |
165 | hwc_display_contents_1_t **mList = (hwc_display_contents_1_t **) malloc(HWC_NUM_DISPLAY_TYPES * sizeof(hwc_display_contents_1_t *)); | |
166 | const hwc_rect_t r = { 0, 0, attr_values[0], attr_values[1] }; | |
167 | ||
168 | int counter = 0; | |
169 | for (; counter < HWC_NUM_DISPLAY_TYPES; counter++) | |
170 | mList[counter] = list; | |
171 | ||
172 | hwc_layer_1_t *layer = &list->hwLayers[0]; | |
173 | memset(layer, 0, sizeof(hwc_layer_1_t)); | |
174 | layer->compositionType = HWC_FRAMEBUFFER; | |
175 | layer->hints = 0; | |
176 | layer->flags = 0; | |
177 | layer->handle = 0; | |
178 | layer->transform = 0; | |
179 | layer->blending = HWC_BLENDING_NONE; | |
180 | layer->sourceCrop = r; | |
181 | layer->displayFrame = r; | |
182 | layer->visibleRegionScreen.numRects = 1; | |
183 | layer->visibleRegionScreen.rects = &layer->displayFrame; | |
184 | layer->acquireFenceFd = -1; | |
185 | layer->releaseFenceFd = -1; | |
186 | layer = &list->hwLayers[1]; | |
187 | memset(layer, 0, sizeof(hwc_layer_1_t)); | |
188 | layer->compositionType = HWC_FRAMEBUFFER_TARGET; | |
189 | layer->hints = 0; | |
190 | layer->flags = 0; | |
191 | layer->handle = 0; | |
192 | layer->transform = 0; | |
193 | layer->blending = HWC_BLENDING_NONE; | |
194 | layer->sourceCrop = r; | |
195 | layer->displayFrame = r; | |
196 | layer->visibleRegionScreen.numRects = 1; | |
197 | layer->visibleRegionScreen.rects = &layer->displayFrame; | |
198 | layer->acquireFenceFd = -1; | |
199 | layer->releaseFenceFd = -1; | |
200 | ||
201 | list->retireFenceFd = -1; | |
202 | list->flags = HWC_GEOMETRY_CHANGED; | |
203 | list->numHwLayers = 2; | |
204 | ||
205 | GLuint vertexShader = load_shader ( vertex_src , GL_VERTEX_SHADER ); // load vertex shader | |
206 | GLuint fragmentShader = load_shader ( fragment_src , GL_FRAGMENT_SHADER ); // load fragment shader | |
207 | ||
208 | GLuint shaderProgram = glCreateProgram (); // create program object | |
209 | glAttachShader ( shaderProgram, vertexShader ); // and attach both... | |
210 | glAttachShader ( shaderProgram, fragmentShader ); // ... shaders to it | |
211 | ||
212 | glLinkProgram ( shaderProgram ); // link the program | |
213 | glUseProgram ( shaderProgram ); // and select it for usage | |
214 | ||
215 | //// now get the locations (kind of handle) of the shaders variables | |
216 | position_loc = glGetAttribLocation ( shaderProgram , "position" ); | |
217 | phase_loc = glGetUniformLocation ( shaderProgram , "phase" ); | |
218 | offset_loc = glGetUniformLocation ( shaderProgram , "offset" ); | |
219 | if ( position_loc < 0 || phase_loc < 0 || offset_loc < 0 ) { | |
220 | return 1; | |
221 | } | |
222 | ||
223 | //glViewport ( 0 , 0 , 800, 600); // commented out so it uses the initial window dimensions | |
224 | glClearColor ( 1. , 1. , 1. , 1.); // background color | |
225 | float phase = 0; | |
226 | int i, oldretire = -1, oldrelease = -1, oldrelease2 = -1; | |
227 | for (i=0; i<1020*60; ++i) { | |
228 | glClear(GL_COLOR_BUFFER_BIT); | |
229 | glUniform1f ( phase_loc , phase ); // write the value of phase to the shaders phase | |
230 | phase = fmodf ( phase + 0.5f , 2.f * 3.141f ); // and update the local variable | |
231 | ||
232 | glUniform4f ( offset_loc , offset_x , offset_y , 0.0 , 0.0 ); | |
233 | ||
234 | glVertexAttribPointer ( position_loc, 3, GL_FLOAT, GL_FALSE, 0, vertexArray ); | |
235 | glEnableVertexAttribArray ( position_loc ); | |
236 | glDrawArrays ( GL_TRIANGLE_STRIP, 0, 5 ); | |
237 | ||
238 | eglSwapBuffers ( (EGLDisplay) display, surface ); // get the rendered buffer to the screen | |
239 | ||
240 | HWComposerNativeWindowBuffer *front; | |
241 | win->lockFrontBuffer(&front); | |
242 | ||
243 | mList[0]->hwLayers[1].handle = front->handle; | |
244 | mList[0]->hwLayers[0].handle = NULL; | |
245 | mList[0]->hwLayers[0].flags = HWC_SKIP_LAYER; | |
246 | ||
247 | oldretire = mList[0]->retireFenceFd; | |
248 | oldrelease = mList[0]->hwLayers[1].releaseFenceFd; | |
249 | oldrelease2 = mList[0]->hwLayers[0].releaseFenceFd; | |
250 | ||
251 | int err = hwcDevicePtr->prepare(hwcDevicePtr, HWC_NUM_DISPLAY_TYPES, mList); | |
252 | assert(err == 0); | |
253 | ||
254 | err = hwcDevicePtr->set(hwcDevicePtr, HWC_NUM_DISPLAY_TYPES, mList); | |
255 | assert(err == 0); | |
256 | ||
257 | assert(mList[0]->hwLayers[0].releaseFenceFd == -1); | |
258 | ||
259 | win->unlockFrontBuffer(front); | |
260 | ||
261 | if (oldrelease != -1) | |
262 | { | |
263 | sync_wait(oldrelease, -1); | |
264 | close(oldrelease); | |
265 | } | |
266 | if (oldrelease2 != -1) | |
267 | { | |
268 | sync_wait(oldrelease2, -1); | |
269 | close(oldrelease2); | |
270 | } | |
271 | if (oldretire != -1) | |
272 | { | |
273 | sync_wait(oldretire, -1); | |
274 | close(oldretire); | |
275 | } | |
276 | } | |
277 | ||
278 | printf("stop\n"); | |
279 | ||
280 | #if 0 | |
281 | (*egldestroycontext)((EGLDisplay) display, context); | |
282 | printf("destroyed context\n"); | |
283 | ||
284 | (*egldestroysurface)((EGLDisplay) display, surface); | |
285 | printf("destroyed surface\n"); | |
286 | (*eglterminate)((EGLDisplay) display); | |
287 | printf("terminated\n"); | |
288 | android_dlclose(baz); | |
289 | #endif | |
290 | } | |
291 | ||
292 | // vim:ts=4:sw=4:noexpandtab |