1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 26 #ifndef XMESAP_H 27 #define XMESAP_H 28 29 30 #include "c11/threads.h" 31 #include "xmesa.h" 32 #include "main/mtypes.h" 33 #include "swrast/s_context.h" 34 35 36 extern mtx_t _xmesa_lock; 37 38 extern XMesaBuffer XMesaBufferList; 39 40 /* for PF_8R8G8B24 pixel format */ 41 typedef struct { 42 GLubyte b; 43 GLubyte g; 44 GLubyte r; 45 } bgr_t; 46 47 48 struct xmesa_renderbuffer; 49 50 51 /* Function pointer for clearing color buffers */ 52 typedef void (*ClearFunc)( struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 53 GLint x, GLint y, GLint width, GLint height ); 54 55 56 57 58 /** Framebuffer pixel formats */ 59 enum pixel_format { 60 PF_Truecolor, /**< TrueColor or DirectColor, any depth */ 61 PF_Dither_True, /**< TrueColor with dithering */ 62 PF_8A8R8G8B, /**< 32-bit TrueColor: 8-A, 8-R, 8-G, 8-B bits */ 63 PF_8A8B8G8R, /**< 32-bit TrueColor: 8-A, 8-B, 8-G, 8-R bits */ 64 PF_8R8G8B, /**< 32-bit TrueColor: 8-R, 8-G, 8-B bits */ 65 PF_8R8G8B24, /**< 24-bit TrueColor: 8-R, 8-G, 8-B bits */ 66 PF_5R6G5B, /**< 16-bit TrueColor: 5-R, 6-G, 5-B bits */ 67 PF_Dither_5R6G5B /**< 16-bit dithered TrueColor: 5-R, 6-G, 5-B */ 68 }; 69 70 71 /** 72 * Visual inforation, derived from struct gl_config. 73 * Basically corresponds to an XVisualInfo. 74 */ 75 struct xmesa_visual { 76 struct gl_config mesa_visual; /* Device independent visual parameters */ 77 XMesaDisplay *display; /* The X11 display */ 78 int screen, visualID; 79 int visualType; 80 XMesaVisualInfo visinfo; /* X's visual info (pointer to private copy) */ 81 GLint BitsPerPixel; /* True bits per pixel for XImages */ 82 83 GLboolean ximage_flag; /* Use XImage for back buffer (not pixmap)? */ 84 85 enum pixel_format dithered_pf; /* Pixel format when dithering */ 86 enum pixel_format undithered_pf;/* Pixel format when not dithering */ 87 88 GLfloat RedGamma; /* Gamma values, 1.0 is default */ 89 GLfloat GreenGamma; 90 GLfloat BlueGamma; 91 92 /* For PF_TRUECOLOR */ 93 GLint rshift, gshift, bshift;/* Pixel color component shifts */ 94 GLubyte Kernel[16]; /* Dither kernel */ 95 unsigned long RtoPixel[512]; /* RGB to pixel conversion */ 96 unsigned long GtoPixel[512]; 97 unsigned long BtoPixel[512]; 98 GLubyte PixelToR[256]; /* Pixel to RGB conversion */ 99 GLubyte PixelToG[256]; 100 GLubyte PixelToB[256]; 101 }; 102 103 104 /** 105 * Context info, derived from struct gl_context. 106 * Basically corresponds to a GLXContext. 107 */ 108 struct xmesa_context { 109 struct gl_context mesa; /* the core library context (containment) */ 110 XMesaVisual xm_visual; /* Describes the buffers */ 111 XMesaBuffer xm_buffer; /* current span/point/line/triangle buffer */ 112 113 XMesaDisplay *display; /* == xm_visual->display */ 114 GLboolean swapbytes; /* Host byte order != display byte order? */ 115 GLboolean direct; /* Direct rendering context? */ 116 117 enum pixel_format pixelformat; 118 119 GLubyte clearcolor[4]; /* current clearing color */ 120 unsigned long clearpixel; /* current clearing pixel value */ 121 }; 122 123 124 /** 125 * Types of X/GLX drawables we might render into. 126 */ 127 typedef enum { 128 WINDOW, /* An X window */ 129 GLXWINDOW, /* GLX window */ 130 PIXMAP, /* GLX pixmap */ 131 PBUFFER /* GLX Pbuffer */ 132 } BufferType; 133 134 135 /** Values for db_mode: */ 136 /*@{*/ 137 #define BACK_PIXMAP 1 138 #define BACK_XIMAGE 2 139 /*@}*/ 140 141 142 /** 143 * An xmesa_renderbuffer represents the back or front color buffer. 144 * For the front color buffer: 145 * <drawable> is the X window 146 * For the back color buffer: 147 * Either <ximage> or <pixmap> will be used, never both. 148 * In any case, <drawable> always equals <pixmap>. 149 * For stand-alone Mesa, we could merge <drawable> and <pixmap> into one 150 * field. We don't do that for the server-side GLcore module because 151 * pixmaps and drawables are different and we'd need a bunch of casts. 152 */ 153 struct xmesa_renderbuffer 154 { 155 struct swrast_renderbuffer Base; /* Base class */ 156 157 XMesaBuffer Parent; /**< The XMesaBuffer this renderbuffer belongs to */ 158 XMesaDrawable drawable; /* Usually the X window ID */ 159 XMesaPixmap pixmap; /* Back color buffer */ 160 XMesaImage *ximage; /* The back buffer, if not using a Pixmap */ 161 162 GLushort *origin2; /* used for PIXEL_ADDR2 macro */ 163 GLint width2; 164 GLubyte *origin3; /* used for PIXEL_ADDR3 macro */ 165 GLint width3; 166 GLuint *origin4; /* used for PIXEL_ADDR4 macro */ 167 GLint width4; 168 169 GLint bottom; /* used for FLIP macro, equals height - 1 */ 170 171 ClearFunc clearFunc; 172 173 GLuint map_x, map_y, map_w, map_h; 174 GLbitfield map_mode; 175 XMesaImage *map_ximage; 176 }; 177 178 179 /** 180 * Framebuffer information, derived from. 181 * Basically corresponds to a GLXDrawable. 182 */ 183 struct xmesa_buffer { 184 struct gl_framebuffer mesa_buffer; /* depth, stencil, accum, etc buffers */ 185 /* This MUST BE FIRST! */ 186 GLboolean wasCurrent; /* was ever the current buffer? */ 187 XMesaVisual xm_visual; /* the X/Mesa visual */ 188 189 XMesaDisplay *display; 190 BufferType type; /* window, pixmap, pbuffer or glxwindow */ 191 192 GLboolean largestPbuffer; /**< for pbuffers */ 193 GLboolean preservedContents; /**< for pbuffers */ 194 195 struct xmesa_renderbuffer *frontxrb; /* front color renderbuffer */ 196 struct xmesa_renderbuffer *backxrb; /* back color renderbuffer */ 197 198 XMesaColormap cmap; /* the X colormap */ 199 200 unsigned long selectedEvents;/* for pbuffers only */ 201 202 GLint db_mode; /* 0 = single buffered */ 203 /* BACK_PIXMAP = use Pixmap for back buffer */ 204 /* BACK_XIMAGE = use XImage for back buffer */ 205 GLuint shm; /* X Shared Memory extension status: */ 206 /* 0 = not available */ 207 /* 1 = XImage support available */ 208 /* 2 = Pixmap support available too */ 209 #if defined(USE_XSHM) 210 XShmSegmentInfo shminfo; 211 #endif 212 213 // XMesaImage *rowimage; /* Used for optimized span writing */ 214 XMesaPixmap stipple_pixmap; /* For polygon stippling */ 215 XMesaGC stipple_gc; /* For polygon stippling */ 216 217 XMesaGC gc; /* scratch GC for span, line, tri drawing */ 218 XMesaGC cleargc; /* GC for clearing the color buffer */ 219 XMesaGC swapgc; /* GC for swapping the color buffers */ 220 221 /* The following are here instead of in the XMesaVisual 222 * because they depend on the window's colormap. 223 */ 224 225 /* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */ 226 unsigned long color_table[576]; /* RGB -> pixel value */ 227 228 /* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */ 229 GLubyte pixel_to_r[65536]; /* pixel value -> red */ 230 GLubyte pixel_to_g[65536]; /* pixel value -> green */ 231 GLubyte pixel_to_b[65536]; /* pixel value -> blue */ 232 233 /* Used to do XAllocColor/XFreeColors accounting: */ 234 int num_alloced; 235 unsigned long alloced_colors[256]; 236 237 /* GLX_EXT_texture_from_pixmap */ 238 GLint TextureTarget; /** GLX_TEXTURE_1D_EXT, for example */ 239 GLint TextureFormat; /** GLX_TEXTURE_FORMAT_RGB_EXT, for example */ 240 GLint TextureMipmap; /** 0 or 1 */ 241 242 struct xmesa_buffer *Next; /* Linked list pointer: */ 243 }; 244 245 246 /** 247 * If pixelformat==PF_TRUECOLOR: 248 */ 249 #define PACK_TRUECOLOR( PIXEL, R, G, B ) \ 250 PIXEL = xmesa->xm_visual->RtoPixel[R] \ 251 | xmesa->xm_visual->GtoPixel[G] \ 252 | xmesa->xm_visual->BtoPixel[B]; \ 253 254 255 /** 256 * If pixelformat==PF_TRUEDITHER: 257 */ 258 #define PACK_TRUEDITHER( PIXEL, X, Y, R, G, B ) \ 259 { \ 260 int d = xmesa->xm_visual->Kernel[((X)&3) | (((Y)&3)<<2)]; \ 261 PIXEL = xmesa->xm_visual->RtoPixel[(R)+d] \ 262 | xmesa->xm_visual->GtoPixel[(G)+d] \ 263 | xmesa->xm_visual->BtoPixel[(B)+d]; \ 264 } 265 266 267 268 /** 269 * If pixelformat==PF_8A8B8G8R: 270 */ 271 #define PACK_8A8B8G8R( R, G, B, A ) \ 272 ( ((A) << 24) | ((B) << 16) | ((G) << 8) | (R) ) 273 274 275 /** 276 * Like PACK_8A8B8G8R() but don't use alpha. This is usually an acceptable 277 * shortcut. 278 */ 279 #define PACK_8B8G8R( R, G, B ) ( ((B) << 16) | ((G) << 8) | (R) ) 280 281 282 283 /** 284 * If pixelformat==PF_8R8G8B: 285 */ 286 #define PACK_8R8G8B( R, G, B) ( ((R) << 16) | ((G) << 8) | (B) ) 287 288 289 /** 290 * If pixelformat==PF_5R6G5B: 291 */ 292 #define PACK_5R6G5B( R, G, B) ( (((R) & 0xf8) << 8) | (((G) & 0xfc) << 3) | ((B) >> 3) ) 293 294 295 /** 296 * If pixelformat==PF_8A8R8G8B: 297 */ 298 #define PACK_8A8R8G8B( R, G, B, A ) \ 299 ( ((A) << 24) | ((R) << 16) | ((G) << 8) | (B) ) 300 301 302 303 304 /** 305 * Converts a GL window Y coord to an X window Y coord: 306 */ 307 #define YFLIP(XRB, Y) ((XRB)->bottom - (Y)) 308 309 310 /** 311 * Return the address of a 2, 3 or 4-byte pixel in the buffer's XImage: 312 * X==0 is left, Y==0 is bottom. 313 */ 314 #define PIXEL_ADDR2(XRB, X, Y) \ 315 ( (XRB)->origin2 - (Y) * (XRB)->width2 + (X) ) 316 317 #define PIXEL_ADDR3(XRB, X, Y) \ 318 ( (bgr_t *) ( (XRB)->origin3 - (Y) * (XRB)->width3 + 3 * (X) )) 319 320 #define PIXEL_ADDR4(XRB, X, Y) \ 321 ( (XRB)->origin4 - (Y) * (XRB)->width4 + (X) ) 322 323 324 325 /* 326 * External functions: 327 */ 328 329 extern struct xmesa_renderbuffer * 330 xmesa_new_renderbuffer(struct gl_context *ctx, GLuint name, 331 const struct xmesa_visual *xmvis, 332 GLboolean backBuffer); 333 334 extern void 335 xmesa_delete_framebuffer(struct gl_framebuffer *fb); 336 337 extern XMesaBuffer 338 xmesa_find_buffer(XMesaDisplay *dpy, XMesaColormap cmap, XMesaBuffer notThis); 339 340 extern unsigned long 341 xmesa_color_to_pixel( struct gl_context *ctx, 342 GLubyte r, GLubyte g, GLubyte b, GLubyte a, 343 GLuint pixelFormat ); 344 345 extern void 346 xmesa_get_window_size(XMesaDisplay *dpy, XMesaBuffer b, 347 GLuint *width, GLuint *height); 348 349 extern void 350 xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer); 351 352 extern void 353 xmesa_init_driver_functions( XMesaVisual xmvisual, 354 struct dd_function_table *driver ); 355 356 extern void 357 xmesa_update_state( struct gl_context *ctx, GLbitfield new_state ); 358 359 360 extern void 361 xmesa_MapRenderbuffer(struct gl_context *ctx, 362 struct gl_renderbuffer *rb, 363 GLuint x, GLuint y, GLuint w, GLuint h, 364 GLbitfield mode, 365 GLubyte **mapOut, GLint *rowStrideOut); 366 367 extern void 368 xmesa_UnmapRenderbuffer(struct gl_context *ctx, struct gl_renderbuffer *rb); 369 370 extern void 371 xmesa_destroy_buffers_on_display(XMesaDisplay *dpy); 372 373 374 /** 375 * Using a function instead of an ordinary cast is safer. 376 */ 377 static inline struct xmesa_renderbuffer * 378 xmesa_renderbuffer(struct gl_renderbuffer *rb) 379 { 380 return (struct xmesa_renderbuffer *) rb; 381 } 382 383 384 /** 385 * Return pointer to XMesaContext corresponding to a Mesa struct gl_context. 386 * Since we're using structure containment, it's just a cast!. 387 */ 388 static inline XMesaContext 389 XMESA_CONTEXT(struct gl_context *ctx) 390 { 391 return (XMesaContext) ctx; 392 } 393 394 395 /** 396 * Return pointer to XMesaBuffer corresponding to a Mesa struct gl_framebuffer. 397 * Since we're using structure containment, it's just a cast!. 398 */ 399 static inline XMesaBuffer 400 XMESA_BUFFER(struct gl_framebuffer *b) 401 { 402 return (XMesaBuffer) b; 403 } 404 405 406 /* Plugged into the software rasterizer. Try to use internal 407 * swrast-style point, line and triangle functions. 408 */ 409 extern void xmesa_choose_point( struct gl_context *ctx ); 410 extern void xmesa_choose_line( struct gl_context *ctx ); 411 extern void xmesa_choose_triangle( struct gl_context *ctx ); 412 413 414 extern void xmesa_register_swrast_functions( struct gl_context *ctx ); 415 416 417 418 #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L 419 #define ENABLE_EXT_timer_query 1 /* should have 64-bit GLuint64EXT */ 420 #else 421 #define ENABLE_EXT_timer_query 0 /* may not have 64-bit GLuint64EXT */ 422 #endif 423 424 425 #define TEST_META_FUNCS 0 426 427 428 #endif 429
