| 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 | } |