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Rev | Author | Line No. | Line |
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4464 | Serge | 1 | #include |
2 | #include |
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3 | #include |
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4 | #include |
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5 | |||
6 | #define EGL_EGLEXT_PROTOTYPES |
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4472 | Serge | 7 | #define GL_GLEXT_PROTOTYPES |
8 | |||
4464 | Serge | 9 | #include "EGL/egl.h" |
10 | #include "EGL/eglext.h" |
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11 | #include "GL/gl.h" |
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12 | #include "gbm.h" |
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4472 | Serge | 13 | #include |
4464 | Serge | 14 | #include |
15 | #include |
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16 | |||
4473 | Serge | 17 | EGLImageKHR px_create_image(EGLDisplay display, EGLContext context, |
18 | int width, int height, int stride, int name); |
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4485 | Serge | 19 | GLuint create_framebuffer(int width, int height, GLuint *tex); |
20 | GLint create_shader(GLenum type, const char *source); |
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4472 | Serge | 21 | |
4464 | Serge | 22 | int main() |
23 | { |
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24 | struct gbm_device *gbm; |
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25 | struct gbm_surface *gs; |
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26 | |||
27 | EGLDisplay dpy; |
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28 | EGLint major, minor; |
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29 | |||
30 | EGLContext context; |
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31 | EGLSurface surface; |
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4472 | Serge | 32 | EGLImageKHR fb_image; |
4464 | Serge | 33 | EGLConfig config; |
34 | |||
35 | EGLint config_attribs[32]; |
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36 | EGLint num_configs, i; |
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4485 | Serge | 37 | GLuint texture, buffer, front; |
38 | GLuint f_tex; |
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4464 | Serge | 39 | |
40 | int fd; |
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41 | |||
42 | fd = get_service("DISPLAY"); |
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43 | gbm = gbm_create_device(fd); |
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44 | if( gbm == NULL){ |
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45 | printf("failed to initialize GBM device"); |
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46 | return 1; |
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47 | }; |
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48 | |||
4472 | Serge | 49 | init_pixlib(HW_BIT_BLIT); |
50 | |||
4464 | Serge | 51 | dpy = eglGetDisplay((EGLNativeDisplayType)gbm); |
52 | |||
53 | if (!eglInitialize(dpy, &major, &minor)) |
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54 | printf("failed to initialize EGL display"); |
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55 | |||
56 | printf("EGL_VERSION = %s\n", eglQueryString(dpy, EGL_VERSION)); |
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57 | printf("EGL_VENDOR = %s\n", eglQueryString(dpy, EGL_VENDOR)); |
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58 | printf("EGL_EXTENSIONS = %s\n", eglQueryString(dpy, EGL_EXTENSIONS)); |
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59 | printf("EGL_CLIENT_APIS = %s\n",eglQueryString(dpy, EGL_CLIENT_APIS)); |
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60 | |||
61 | i = 0; |
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62 | config_attribs[i++] = EGL_RED_SIZE; |
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63 | config_attribs[i++] = 1; |
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64 | config_attribs[i++] = EGL_GREEN_SIZE; |
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65 | config_attribs[i++] = 1; |
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66 | config_attribs[i++] = EGL_BLUE_SIZE; |
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67 | config_attribs[i++] = 1; |
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68 | config_attribs[i++] = EGL_DEPTH_SIZE; |
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69 | config_attribs[i++] = 1; |
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70 | |||
71 | config_attribs[i++] = EGL_SURFACE_TYPE; |
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72 | config_attribs[i++] = EGL_WINDOW_BIT; |
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73 | |||
74 | config_attribs[i++] = EGL_RENDERABLE_TYPE; |
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75 | config_attribs[i++] = EGL_OPENGL_BIT; |
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76 | config_attribs[i] = EGL_NONE; |
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77 | |||
78 | if (!eglChooseConfig(dpy,config_attribs, &config, 1, &num_configs) || !num_configs) |
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79 | printf("failed to choose a config"); |
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80 | |||
81 | eglBindAPI(EGL_OPENGL_API); |
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82 | context = eglCreateContext(dpy, config, EGL_NO_CONTEXT, NULL); |
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83 | if (!context) |
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84 | printf("failed to create context"); |
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85 | |||
4485 | Serge | 86 | // gs = gbm_surface_create(gbm, 1024, 768, GBM_BO_FORMAT_ARGB8888, GBM_BO_USE_RENDERING); |
4464 | Serge | 87 | |
88 | |||
89 | BeginDraw(); |
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90 | DrawWindow(20, 20, 400+9, 300+24, "gl-render", 0x000000, 0x74); |
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91 | EndDraw(); |
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92 | |||
4472 | Serge | 93 | sna_create_mask(); |
94 | |||
4485 | Serge | 95 | // surface = eglCreateWindowSurface(dpy,config, (EGLNativeWindowType)gs, NULL); |
96 | // if (surface == EGL_NO_SURFACE) |
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97 | // printf("failed to create surface"); |
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4464 | Serge | 98 | |
4485 | Serge | 99 | if (!eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, context)) |
4464 | Serge | 100 | printf("failed to make window current"); |
101 | |||
4472 | Serge | 102 | |
4485 | Serge | 103 | front = create_framebuffer(400,300,&f_tex); |
104 | glMatrixMode(GL_PROJECTION); |
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105 | glLoadIdentity(); |
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106 | glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0); |
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107 | glMatrixMode(GL_MODELVIEW); |
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108 | glLoadIdentity(); |
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109 | |||
110 | glViewport(0, 0, 400, 300); |
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111 | |||
112 | glClearColor( 0, 0, 0, 1); |
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113 | |||
114 | glClear(GL_COLOR_BUFFER_BIT); |
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115 | |||
116 | glBegin(GL_QUADS); |
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117 | glColor3f(1,0,0); |
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118 | glVertex3f( 0.9, -0.9, -30.0); |
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119 | glColor3f(1,1,0); |
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120 | glVertex3f( 0.9, 0.9, -30.0); |
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121 | |||
122 | glColor3f(1,1,1); |
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123 | glVertex3f( 0.1, 0.9, -30.0); |
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124 | glColor3f(1,0,1); |
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125 | glVertex3f( 0.1, -0.9, -30.0); |
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126 | glEnd(); |
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127 | |||
128 | glFlush(); |
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129 | |||
130 | glBindFramebuffer(GL_FRAMEBUFFER, 0); |
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131 | |||
4472 | Serge | 132 | if(fd) |
133 | { |
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134 | int ret; |
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4473 | Serge | 135 | GLenum status; |
4472 | Serge | 136 | struct drm_i915_fb_info fb; |
137 | |||
138 | memset(&fb, 0, sizeof(fb)); |
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139 | ret = drmIoctl(fd, SRV_FBINFO, &fb); |
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140 | if( ret != 0 ) |
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141 | printf("failed to get framebuffer info\n"); |
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142 | |||
4473 | Serge | 143 | fb_image = px_create_image(dpy,context,fb.width,fb.height, |
144 | fb.pitch,fb.name); |
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4472 | Serge | 145 | |
4473 | Serge | 146 | printf("fb_image %p\n", fb_image); |
147 | |||
148 | glGenTextures(1, &texture); |
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149 | glBindTexture(GL_TEXTURE_2D, texture); |
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4472 | Serge | 150 | glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST); |
151 | glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST); |
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152 | |||
153 | glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,fb_image); |
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154 | glBindTexture(GL_TEXTURE_2D, 0); |
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155 | |||
4473 | Serge | 156 | glGenFramebuffers(1, &buffer); |
157 | glBindFramebuffer(GL_FRAMEBUFFER, buffer); |
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158 | glFramebufferTexture2D(GL_FRAMEBUFFER, |
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159 | GL_COLOR_ATTACHMENT0, |
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160 | GL_TEXTURE_2D, texture,0); |
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161 | status = glCheckFramebufferStatus(GL_FRAMEBUFFER); |
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162 | if (status != GL_FRAMEBUFFER_COMPLETE) |
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163 | { |
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164 | const char *str; |
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165 | switch (status) |
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166 | { |
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167 | case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT: |
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168 | str = "incomplete attachment"; |
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169 | break; |
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170 | case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: |
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171 | str = "incomplete/missing attachment"; |
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172 | break; |
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173 | case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER: |
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174 | str = "incomplete draw buffer"; |
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175 | break; |
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176 | case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER: |
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177 | str = "incomplete read buffer"; |
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178 | break; |
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179 | case GL_FRAMEBUFFER_UNSUPPORTED: |
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180 | str = "unsupported"; |
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181 | break; |
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182 | case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE: |
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183 | str = "incomplete multiple"; |
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184 | break; |
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185 | default: |
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186 | str = "unknown error"; |
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187 | break; |
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188 | } |
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189 | |||
190 | printf("destination is framebuffer incomplete: %s [%#x]\n", |
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191 | str, status); |
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192 | } |
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4472 | Serge | 193 | } |
194 | |||
4485 | Serge | 195 | glViewport(0, 0, 1024, 768); |
196 | glMatrixMode(GL_PROJECTION); |
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197 | glLoadIdentity(); |
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198 | glMatrixMode(GL_MODELVIEW); |
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199 | glLoadIdentity(); |
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4464 | Serge | 200 | |
201 | |||
4485 | Serge | 202 | const char *vs_src = |
203 | "attribute vec4 v_position;\n" |
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204 | "attribute vec4 v_texcoord0;\n" |
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205 | "varying vec2 source_texture;\n" |
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206 | "void main()\n" |
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207 | "{\n" |
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208 | " gl_Position = v_position;\n" |
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209 | " source_texture = v_texcoord0.xy;\n" |
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210 | "}\n"; |
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4464 | Serge | 211 | |
4485 | Serge | 212 | const char *fs_src = |
213 | // "precision mediump float;\n" |
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214 | "varying vec2 source_texture;\n" |
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215 | "uniform sampler2D sampler;\n" |
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216 | "void main()\n" |
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217 | "{\n" |
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218 | " vec3 cg = texture2D(sampler, source_texture).rgb;\n" |
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219 | " gl_FragColor = vec4(cg.r,cg.g,cg.b,1.0);\n" |
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220 | "}\n"; |
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4464 | Serge | 221 | |
4485 | Serge | 222 | GLuint blit_prog; |
223 | GLint vs_shader, fs_shader; |
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4464 | Serge | 224 | |
4472 | Serge | 225 | asm volatile ("int3"); |
226 | |||
4485 | Serge | 227 | blit_prog = glCreateProgram(); |
228 | vs_shader = create_shader(GL_VERTEX_SHADER,vs_src); |
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229 | fs_shader = create_shader(GL_FRAGMENT_SHADER, fs_src); |
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230 | glAttachShader(blit_prog, vs_shader); |
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231 | glAttachShader(blit_prog, fs_shader); |
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232 | glBindAttribLocation(blit_prog, 0, "v_position"); |
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233 | glBindAttribLocation(blit_prog, 1, "v_texcoord0"); |
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4464 | Serge | 234 | |
4485 | Serge | 235 | GLint ok; |
4464 | Serge | 236 | |
4485 | Serge | 237 | glLinkProgram(blit_prog); |
238 | glGetProgramiv(blit_prog, GL_LINK_STATUS, &ok); |
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239 | if (!ok) { |
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240 | GLchar *info; |
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241 | GLint size; |
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4464 | Serge | 242 | |
4485 | Serge | 243 | glGetProgramiv(blit_prog, GL_INFO_LOG_LENGTH, &size); |
244 | info = malloc(size); |
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4464 | Serge | 245 | |
4485 | Serge | 246 | glGetProgramInfoLog(blit_prog, size, NULL, info); |
247 | printf("Failed to link: %s\n", info); |
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248 | printf("GLSL link failure\n"); |
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249 | } |
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4464 | Serge | 250 | |
4485 | Serge | 251 | GLint sampler; |
252 | float vertices[8], texcoords[8]; |
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253 | GLfloat dst_xscale, dst_yscale; //, src_xscale, src_yscale; |
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254 | int l, t, r, b, stride; |
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4464 | Serge | 255 | |
4485 | Serge | 256 | sampler = glGetUniformLocation(blit_prog,"sampler"); |
257 | glUseProgram(blit_prog); |
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258 | glUniform1i(sampler, 0); |
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4464 | Serge | 259 | |
4485 | Serge | 260 | glVertexAttribPointer(0, 2, GL_FLOAT,GL_FALSE, 2 * sizeof(float),vertices); |
261 | glEnableVertexAttribArray(0); |
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262 | |||
263 | glActiveTexture(GL_TEXTURE0); |
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264 | glBindTexture(GL_TEXTURE_2D, f_tex); |
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265 | glTexParameteri(GL_TEXTURE_2D, |
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266 | GL_TEXTURE_MIN_FILTER, |
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267 | GL_NEAREST); |
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268 | glTexParameteri(GL_TEXTURE_2D, |
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269 | GL_TEXTURE_MAG_FILTER, |
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270 | GL_NEAREST); |
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271 | |||
272 | glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float),texcoords); |
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273 | glEnableVertexAttribArray(1); |
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274 | |||
275 | dst_xscale = 1.0/1024; |
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276 | dst_yscale = 1.0/768; |
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277 | // src_xscale = 1.0/400; |
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278 | // src_yscale = 1.0/300; |
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279 | |||
280 | stride = 2; |
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281 | |||
282 | l = 20; |
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283 | t = 20; |
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284 | r = l+400; |
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285 | b = t+300; |
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286 | |||
287 | float t0, t1, t2, t5; |
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288 | |||
289 | vertices[0] = t0 = 2*l*dst_xscale - 1.0; |
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290 | vertices[1 * 2] = t2 = 2*r*dst_xscale - 1.0; |
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291 | |||
292 | vertices[2 * 2] = t2; |
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293 | vertices[3 * 2] = t0; |
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294 | |||
295 | vertices[1] = t1 = 2*t*dst_yscale - 1.0; |
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296 | vertices[2*2+1] = t5 = 2*b*dst_yscale - 1.0; |
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297 | vertices[1*2+1] = t1; |
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298 | vertices[3*2+1] = t5; |
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299 | |||
300 | texcoords[0] = 0.0; |
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301 | texcoords[1] = 0.0; |
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302 | texcoords[1*2] = 1.0; |
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303 | texcoords[1*2+1]= 0.0; |
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304 | texcoords[2*2] = 1.0; |
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305 | texcoords[2*2+1]= 1.0; |
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306 | texcoords[3*2] = 0.0; |
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307 | texcoords[3*2+1]= 1.0; |
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308 | |||
309 | glDrawArrays(GL_TRIANGLE_FAN, 0, 4); |
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310 | |||
311 | glDisableVertexAttribArray(0); |
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312 | glDisableVertexAttribArray(1); |
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313 | glDisable(GL_TEXTURE_2D); |
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314 | glUseProgram(0); |
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315 | |||
4464 | Serge | 316 | glFinish(); |
317 | eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); |
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4473 | Serge | 318 | // eglDestroySurface(dpy, surface); |
319 | // gbm_surface_destroy(gs); |
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4464 | Serge | 320 | eglDestroyContext(dpy, context); |
321 | eglTerminate(dpy); |
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322 | |||
323 | while(1) |
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324 | { |
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325 | delay(1); |
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326 | } |
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4472 | Serge | 327 | |
4464 | Serge | 328 | return 0; |
329 | } |
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4472 | Serge | 330 | |
331 | int drmIoctl(int fd, unsigned long request, void *arg) |
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332 | { |
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333 | ioctl_t io; |
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334 | |||
335 | io.handle = fd; |
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336 | io.io_code = request; |
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337 | io.input = arg; |
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338 | io.inp_size = 64; |
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339 | io.output = NULL; |
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340 | io.out_size = 0; |
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341 | |||
342 | return call_service(&io); |
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343 | } |
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344 | |||
4473 | Serge | 345 | EGLImageKHR px_create_image(EGLDisplay display, EGLContext context, |
346 | int width, int height, int stride, int name) |
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4472 | Serge | 347 | { |
348 | EGLImageKHR image; |
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349 | EGLint attribs[] = { |
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350 | EGL_WIDTH, 0, |
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351 | EGL_HEIGHT, 0, |
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352 | EGL_DRM_BUFFER_STRIDE_MESA, 0, |
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353 | EGL_DRM_BUFFER_FORMAT_MESA, |
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354 | EGL_DRM_BUFFER_FORMAT_ARGB32_MESA, |
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355 | EGL_DRM_BUFFER_USE_MESA, |
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356 | EGL_DRM_BUFFER_USE_SHARE_MESA | |
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357 | EGL_DRM_BUFFER_USE_SCANOUT_MESA, |
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358 | EGL_NONE |
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359 | }; |
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360 | attribs[1] = width; |
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361 | attribs[3] = height; |
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4485 | Serge | 362 | attribs[5] = stride/4; |
4473 | Serge | 363 | |
364 | printf("%s w:%d :%d pitch:%d handle %d\n", __FUNCTION__, |
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365 | width, height, stride, name); |
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366 | |||
4472 | Serge | 367 | image = eglCreateImageKHR(display, context, EGL_DRM_BUFFER_MESA, |
368 | (void *) (uintptr_t)name, attribs); |
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369 | |||
370 | return image; |
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371 | } |
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4485 | Serge | 372 | |
373 | GLint create_shader(GLenum type, const char *source) |
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374 | { |
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375 | GLint ok; |
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376 | GLint prog; |
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377 | |||
378 | prog = glCreateShader(type); |
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379 | glShaderSource(prog, 1, (const GLchar **) &source, NULL); |
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380 | glCompileShader(prog); |
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381 | glGetShaderiv(prog, GL_COMPILE_STATUS, &ok); |
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382 | if (!ok) { |
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383 | GLchar *info; |
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384 | GLint size; |
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385 | |||
386 | glGetShaderiv(prog, GL_INFO_LOG_LENGTH, &size); |
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387 | info = malloc(size); |
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388 | |||
389 | glGetShaderInfoLog(prog, size, NULL, info); |
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390 | printf("Failed to compile %s: %s\n", |
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391 | type == GL_FRAGMENT_SHADER ? "FS" : "VS",info); |
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392 | printf("Program source:\n%s", source); |
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393 | printf("GLSL compile failure\n"); |
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394 | } |
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395 | |||
396 | return prog; |
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397 | } |
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398 | |||
399 | GLuint create_framebuffer(int width, int height, GLuint *tex) |
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400 | { |
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401 | GLuint buffer; |
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402 | |||
403 | glGenTextures(1, tex); |
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404 | glBindTexture(GL_TEXTURE_2D, *tex); |
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405 | glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST); |
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406 | glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST); |
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407 | |||
408 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, |
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409 | GL_UNSIGNED_BYTE, NULL); |
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410 | glBindTexture(GL_TEXTURE_2D, 0); |
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411 | |||
412 | glGenFramebuffers(1, &buffer); |
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413 | glBindFramebuffer(GL_FRAMEBUFFER, buffer); |
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414 | glFramebufferTexture2D(GL_FRAMEBUFFER, |
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415 | GL_COLOR_ATTACHMENT0, |
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416 | GL_TEXTURE_2D, *tex,0); |
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417 | return buffer; |
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418 | } |