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