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d42e7319 JB |
1 | /* |
2 | * Copyright (C) 2013 Canonical Ltd | |
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 | * Authored by: Thomas Voss <thomas.voss@canonical.com> | |
17 | * Ricardo Salveti de Araujo <ricardo.salveti@canonical.com> | |
18 | */ | |
19 | ||
20 | #include <unistd.h> | |
21 | #include <stdlib.h> | |
22 | #include <stdio.h> | |
23 | #include <limits.h> | |
24 | ||
25 | #include <GLES2/gl2.h> | |
26 | #include <GLES2/gl2ext.h> | |
27 | ||
28 | #include <hybris/surface_flinger/surface_flinger_compatibility_layer.h> | |
29 | ||
30 | struct SfSurface* sf_surface_create(struct SfClient* client, SfSurfaceCreationParameters* params); | |
31 | EGLSurface sf_surface_get_egl_surface(struct SfSurface*); | |
32 | void sf_surface_make_current(struct SfSurface* surface); | |
33 | ||
34 | void sf_surface_move_to(struct SfSurface* surface, int x, int y); | |
35 | void sf_surface_set_layer(struct SfSurface* surface, int layer); | |
36 | void sf_surface_set_alpha(struct SfSurface* surface, float alpha); | |
37 | ||
38 | double rotation_increment = 0.01; | |
39 | ||
40 | /* animation state variables */ | |
41 | GLfloat rotation_angle = 0.0f; | |
42 | ||
43 | static GLuint gProgram; | |
44 | static GLuint gvPositionHandle, gvColorHandle; | |
45 | static GLuint rotation_uniform; | |
46 | static GLint num_vertex = 3; | |
47 | static const GLfloat triangle[] = { | |
48 | -0.125f, -0.125f, 0.0f, 0.5f, | |
49 | 0.0f, 0.125f, 0.0f, 0.5f, | |
50 | 0.125f, -0.125f, 0.0f, 0.5f }; | |
51 | static const GLfloat color_triangle[] = { | |
52 | 0.0f, 0.0f, 1.0f, 1.0f, | |
53 | 0.0f, 1.0f, 0.0f, 1.0f, | |
54 | 1.0f, 0.0f, 0.0f, 0.0f }; | |
55 | const GLfloat * vertex_data; | |
56 | const GLfloat * color_data; | |
57 | static const char gVertexShader[] = | |
58 | "attribute vec4 vPosition;\n" | |
59 | "attribute vec4 vColor;\n" | |
60 | "uniform float angle;\n" | |
61 | "varying vec4 colorinfo;\n" | |
62 | "void main() {\n" | |
63 | " mat3 rot_z = mat3( vec3( cos(angle), sin(angle), 0.0),\n" | |
64 | " vec3(-sin(angle), cos(angle), 0.0),\n" | |
65 | " vec3( 0.0, 0.0, 1.0));\n" | |
66 | " gl_Position = vec4(rot_z * vPosition.xyz, 1.0);\n" | |
67 | " colorinfo = vColor;\n" | |
68 | "}\n"; | |
69 | ||
70 | static const char gFragmentShader[] = "precision mediump float;\n" | |
71 | "varying vec4 colorinfo;\n" | |
72 | "void main() {\n" | |
73 | " gl_FragColor = colorinfo;\n" | |
74 | "}\n"; | |
75 | ||
76 | /* util functions */ | |
77 | GLuint loadShader(GLenum shaderType, const char* pSource) | |
78 | { | |
79 | GLuint shader = glCreateShader(shaderType); | |
80 | if (shader) { | |
81 | glShaderSource(shader, 1, &pSource, NULL); | |
82 | glCompileShader(shader); | |
83 | GLint compiled = 0; | |
84 | glGetShaderiv(shader, GL_COMPILE_STATUS, &compiled); | |
85 | ||
86 | if (!compiled) { | |
87 | GLint infoLen = 0; | |
88 | glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLen); | |
89 | if (infoLen) { | |
90 | char* buf = (char*) malloc(infoLen); | |
91 | if (buf) { | |
92 | glGetShaderInfoLog(shader, infoLen, NULL, buf); | |
93 | fprintf(stderr, "Could not compile shader %d:\n%s\n", | |
94 | shaderType, buf); | |
95 | free(buf); | |
96 | } | |
97 | glDeleteShader(shader); | |
98 | shader = 0; | |
99 | } | |
100 | } | |
101 | } else { | |
102 | printf("Error, during shader creation: %i\n", glGetError()); | |
103 | } | |
104 | ||
105 | return shader; | |
106 | } | |
107 | ||
108 | GLuint createProgram(const char* pVertexSource, const char* pFragmentSource) | |
109 | { | |
110 | GLuint vertexShader = loadShader(GL_VERTEX_SHADER, pVertexSource); | |
111 | if (!vertexShader) { | |
112 | printf("vertex shader not compiled\n"); | |
113 | return 0; | |
114 | } | |
115 | ||
116 | GLuint pixelShader = loadShader(GL_FRAGMENT_SHADER, pFragmentSource); | |
117 | if (!pixelShader) { | |
118 | printf("frag shader not compiled\n"); | |
119 | return 0; | |
120 | } | |
121 | ||
122 | GLuint program = glCreateProgram(); | |
123 | if (program) { | |
124 | glAttachShader(program, vertexShader); | |
125 | glAttachShader(program, pixelShader); | |
126 | glLinkProgram(program); | |
127 | GLint linkStatus = GL_FALSE; | |
128 | glGetProgramiv(program, GL_LINK_STATUS, &linkStatus); | |
129 | ||
130 | if (linkStatus != GL_TRUE) { | |
131 | GLint bufLength = 0; | |
132 | glGetProgramiv(program, GL_INFO_LOG_LENGTH, &bufLength); | |
133 | if (bufLength) { | |
134 | char* buf = (char*) malloc(bufLength); | |
135 | if (buf) { | |
136 | glGetProgramInfoLog(program, bufLength, NULL, buf); | |
137 | fprintf(stderr, "Could not link program:\n%s\n", buf); | |
138 | free(buf); | |
139 | } | |
140 | } | |
141 | glDeleteProgram(program); | |
142 | program = 0; | |
143 | } | |
144 | } | |
145 | ||
146 | return program; | |
147 | } | |
148 | ||
149 | int setupGraphics() | |
150 | { | |
151 | vertex_data = triangle; | |
152 | color_data = color_triangle; | |
153 | ||
154 | gProgram = createProgram(gVertexShader, gFragmentShader); | |
155 | if (!gProgram) { | |
156 | printf("error making program\n"); | |
157 | return 0; | |
158 | } | |
159 | ||
160 | gvPositionHandle = glGetAttribLocation(gProgram, "vPosition"); | |
161 | gvColorHandle = glGetAttribLocation(gProgram, "vColor"); | |
162 | ||
163 | rotation_uniform = glGetUniformLocation(gProgram, "angle"); | |
164 | ||
165 | return 1; | |
166 | } | |
167 | ||
168 | void hw_render(EGLDisplay displ, EGLSurface surface) | |
169 | { | |
170 | glUseProgram(gProgram); | |
171 | ||
172 | glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); | |
173 | ||
174 | glUniform1fv(rotation_uniform,1, &rotation_angle); | |
175 | ||
176 | glVertexAttribPointer(gvColorHandle, num_vertex, GL_FLOAT, GL_FALSE, sizeof(GLfloat)*4, color_data); | |
177 | glVertexAttribPointer(gvPositionHandle, num_vertex, GL_FLOAT, GL_FALSE, 0, vertex_data); | |
178 | glEnableVertexAttribArray(gvPositionHandle); | |
179 | glEnableVertexAttribArray(gvColorHandle); | |
180 | ||
181 | glDrawArrays(GL_TRIANGLE_STRIP, 0, num_vertex); | |
182 | glDisableVertexAttribArray(gvPositionHandle); | |
183 | glDisableVertexAttribArray(gvColorHandle); | |
184 | ||
185 | eglSwapBuffers(displ, surface); | |
186 | } | |
187 | ||
188 | void hw_step() | |
189 | { | |
190 | rotation_angle += rotation_increment; | |
191 | return; | |
192 | } | |
193 | ||
194 | int main(int argc, char** argv) | |
195 | { | |
196 | struct SfClient* sf_client = sf_client_create(); | |
197 | ||
198 | if (!sf_client) { | |
199 | printf("Problem creating client ... aborting now."); | |
200 | return 1; | |
201 | } | |
202 | ||
203 | int x = getenv("X") ? atoi(getenv("X")) : 200; | |
204 | int y = getenv("Y") ? atoi(getenv("Y")) : 200; | |
205 | ||
206 | int w = getenv("W") ? atoi(getenv("W")) : 500; | |
207 | int h = getenv("H") ? atoi(getenv("H")) : 500; | |
208 | ||
209 | float opacity = getenv("O") ? atof(getenv("O")) : 0.5; | |
210 | rotation_increment = getenv("RI") ? atof(getenv("RI")) : 0.01; | |
211 | ||
212 | SfSurfaceCreationParameters params = { | |
213 | x, | |
214 | y, | |
215 | w, | |
216 | h, | |
217 | -1, // PIXEL_FORMAT_RGBA_8888, | |
218 | INT_MAX, | |
219 | opacity, | |
220 | 1, | |
221 | "A test surface" | |
222 | }; | |
223 | ||
224 | struct SfSurface* sf_surface = sf_surface_create(sf_client, ¶ms); | |
225 | ||
226 | if (!sf_surface) { | |
227 | printf("Problem creating surface ... aborting now."); | |
228 | return 1; | |
229 | } | |
230 | ||
231 | sf_surface_make_current(sf_surface); | |
232 | ||
233 | EGLDisplay disp = sf_client_get_egl_display(sf_client); | |
234 | EGLSurface surface = sf_surface_get_egl_surface(sf_surface); | |
235 | ||
236 | setupGraphics(); | |
237 | ||
238 | printf("Turning off screen\n"); | |
239 | sf_blank(0); | |
240 | ||
241 | sleep(1); | |
242 | ||
243 | printf("Turning on screen\n"); | |
244 | sf_unblank(0); | |
245 | ||
246 | for (;;) { | |
247 | hw_render(disp, surface); | |
248 | hw_step(); | |
249 | } | |
250 | } |