1/* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2006 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/** 27 * \file xm_dd.h 28 * General device driver functions for Xlib driver. 29 */ 30 31#include "glxheader.h" 32#include "main/bufferobj.h" 33#include "main/context.h" 34#include "main/colormac.h" 35#include "main/fbobject.h" 36#include "main/framebuffer.h" 37#include "main/macros.h" 38#include "main/mipmap.h" 39#include "main/image.h" 40#include "main/mtypes.h" 41#include "main/pbo.h" 42#include "main/texformat.h" 43#include "swrast/swrast.h" 44#include "swrast/s_context.h" 45#include "swrast_setup/swrast_setup.h" 46#include "tnl/tnl.h" 47#include "tnl/t_context.h" 48#include "drivers/common/meta.h" 49#include "xmesaP.h" 50#include "util/u_memory.h" 51 52 53static void 54finish(struct gl_context *ctx) 55{ 56 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 57 if (xmesa) { 58 mtx_lock(&_xmesa_lock); 59 XSync( xmesa->display, False ); 60 mtx_unlock(&_xmesa_lock); 61 } 62} 63 64 65static void 66flush(struct gl_context *ctx, unsigned gallium_flush_flags) 67{ 68 finish(ctx); 69} 70 71 72/* Implements glColorMask() */ 73static void 74color_mask(struct gl_context *ctx, 75 GLboolean rmask, GLboolean gmask, GLboolean bmask, GLboolean amask) 76{ 77 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 78 XMesaBuffer xmbuf; 79 const int xclass = xmesa->xm_visual->visualType; 80 (void) amask; 81 82 if (_mesa_is_user_fbo(ctx->DrawBuffer)) 83 return; 84 85 xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 86 87 if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) { 88 unsigned long m; 89 if (rmask && gmask && bmask) { 90 m = ((unsigned long)~0L); 91 } 92 else { 93 m = 0; 94 if (rmask) m |= GET_REDMASK(xmesa->xm_visual); 95 if (gmask) m |= GET_GREENMASK(xmesa->xm_visual); 96 if (bmask) m |= GET_BLUEMASK(xmesa->xm_visual); 97 } 98 XMesaSetPlaneMask( xmesa->display, xmbuf->cleargc, m ); 99 } 100} 101 102 103 104/**********************************************************************/ 105/*** glClear implementations ***/ 106/**********************************************************************/ 107 108 109/** 110 * Clear the front or back color buffer, if it's implemented with a pixmap. 111 */ 112static void 113clear_pixmap(struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 114 GLint x, GLint y, GLint width, GLint height) 115{ 116 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 117 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 118 119 assert(xmbuf); 120 assert(xrb->pixmap); 121 assert(xmesa); 122 assert(xmesa->display); 123 assert(xrb->pixmap); 124 assert(xmbuf->cleargc); 125 126 XMesaFillRectangle( xmesa->display, xrb->pixmap, xmbuf->cleargc, 127 x, xrb->Base.Base.Height - y - height, 128 width, height ); 129} 130 131 132static void 133clear_16bit_ximage( struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 134 GLint x, GLint y, GLint width, GLint height) 135{ 136 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 137 GLuint pixel = (GLuint) xmesa->clearpixel; 138 GLint i, j; 139 140 if (xmesa->swapbytes) { 141 pixel = ((pixel >> 8) & 0x00ff) | ((pixel << 8) & 0xff00); 142 } 143 144 for (j = 0; j < height; j++) { 145 GLushort *ptr2 = PIXEL_ADDR2(xrb, x, y + j); 146 for (i = 0; i < width; i++) { 147 ptr2[i] = pixel; 148 } 149 } 150} 151 152 153/* Optimized code provided by Nozomi Ytow <noz@xfree86.org> */ 154static void 155clear_24bit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 156 GLint x, GLint y, GLint width, GLint height) 157{ 158 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 159 const GLubyte r = xmesa->clearcolor[0]; 160 const GLubyte g = xmesa->clearcolor[1]; 161 const GLubyte b = xmesa->clearcolor[2]; 162 163 if (r == g && g == b) { 164 /* same value for all three components (gray) */ 165 GLint j; 166 for (j = 0; j < height; j++) { 167 bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j); 168 memset(ptr3, r, 3 * width); 169 } 170 } 171 else { 172 /* non-gray clear color */ 173 GLint i, j; 174 for (j = 0; j < height; j++) { 175 bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j); 176 for (i = 0; i < width; i++) { 177 ptr3->r = r; 178 ptr3->g = g; 179 ptr3->b = b; 180 ptr3++; 181 } 182 } 183 } 184} 185 186 187static void 188clear_32bit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 189 GLint x, GLint y, GLint width, GLint height) 190{ 191 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 192 register GLuint pixel = (GLuint) xmesa->clearpixel; 193 194 if (!xrb->ximage) 195 return; 196 197 if (xmesa->swapbytes) { 198 pixel = ((pixel >> 24) & 0x000000ff) 199 | ((pixel >> 8) & 0x0000ff00) 200 | ((pixel << 8) & 0x00ff0000) 201 | ((pixel << 24) & 0xff000000); 202 } 203 204 if (width == xrb->Base.Base.Width && height == xrb->Base.Base.Height) { 205 /* clearing whole buffer */ 206 const GLuint n = xrb->Base.Base.Width * xrb->Base.Base.Height; 207 GLuint *ptr4 = (GLuint *) xrb->ximage->data; 208 if (pixel == 0) { 209 /* common case */ 210 memset(ptr4, pixel, 4 * n); 211 } 212 else { 213 GLuint i; 214 for (i = 0; i < n; i++) 215 ptr4[i] = pixel; 216 } 217 } 218 else { 219 /* clearing scissored region */ 220 GLint i, j; 221 for (j = 0; j < height; j++) { 222 GLuint *ptr4 = PIXEL_ADDR4(xrb, x, y + j); 223 for (i = 0; i < width; i++) { 224 ptr4[i] = pixel; 225 } 226 } 227 } 228} 229 230 231static void 232clear_nbit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 233 GLint x, GLint y, GLint width, GLint height) 234{ 235 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 236 XMesaImage *img = xrb->ximage; 237 GLint i, j; 238 239 /* TODO: optimize this */ 240 y = YFLIP(xrb, y); 241 for (j = 0; j < height; j++) { 242 for (i = 0; i < width; i++) { 243 XMesaPutPixel(img, x+i, y-j, xmesa->clearpixel); 244 } 245 } 246} 247 248 249 250static void 251clear_buffers(struct gl_context *ctx, GLbitfield buffers) 252{ 253 if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) { 254 /* this is a window system framebuffer */ 255 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 256 XMesaBuffer b = XMESA_BUFFER(ctx->DrawBuffer); 257 const GLint x = ctx->DrawBuffer->_Xmin; 258 const GLint y = ctx->DrawBuffer->_Ymin; 259 const GLint width = ctx->DrawBuffer->_Xmax - x; 260 const GLint height = ctx->DrawBuffer->_Ymax - y; 261 262 _mesa_unclamped_float_rgba_to_ubyte(xmesa->clearcolor, 263 ctx->Color.ClearColor.f); 264 xmesa->clearpixel = xmesa_color_to_pixel(ctx, 265 xmesa->clearcolor[0], 266 xmesa->clearcolor[1], 267 xmesa->clearcolor[2], 268 xmesa->clearcolor[3], 269 xmesa->xm_visual->undithered_pf); 270 XMesaSetForeground(xmesa->display, b->cleargc, xmesa->clearpixel); 271 272 /* we can't handle color or index masking */ 273 if (GET_COLORMASK(ctx->Color.ColorMask, 0) == 0xf && 274 ctx->Color.IndexMask == 0xffffffff) { 275 if (buffers & BUFFER_BIT_FRONT_LEFT) { 276 /* clear front color buffer */ 277 struct gl_renderbuffer *frontRb 278 = ctx->DrawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer; 279 if (b->frontxrb == xmesa_renderbuffer(frontRb)) { 280 /* renderbuffer is not wrapped - great! */ 281 b->frontxrb->clearFunc(ctx, b->frontxrb, x, y, width, height); 282 buffers &= ~BUFFER_BIT_FRONT_LEFT; 283 } 284 else { 285 /* we can't directly clear an alpha-wrapped color buffer */ 286 } 287 } 288 if (buffers & BUFFER_BIT_BACK_LEFT) { 289 /* clear back color buffer */ 290 struct gl_renderbuffer *backRb 291 = ctx->DrawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer; 292 if (b->backxrb == xmesa_renderbuffer(backRb)) { 293 /* renderbuffer is not wrapped - great! */ 294 b->backxrb->clearFunc(ctx, b->backxrb, x, y, width, height); 295 buffers &= ~BUFFER_BIT_BACK_LEFT; 296 } 297 } 298 } 299 } 300 if (buffers) 301 _swrast_Clear(ctx, buffers); 302} 303 304 305/* XXX these functions haven't been tested in the Xserver environment */ 306 307 308/** 309 * Check if we can do an optimized glDrawPixels into an 8R8G8B visual. 310 */ 311static GLboolean 312can_do_DrawPixels_8R8G8B(struct gl_context *ctx, GLenum format, GLenum type) 313{ 314 if (format == GL_BGRA && 315 type == GL_UNSIGNED_BYTE && 316 ctx->DrawBuffer && 317 _mesa_is_winsys_fbo(ctx->DrawBuffer) && 318 ctx->Pixel.ZoomX == 1.0 && /* no zooming */ 319 ctx->Pixel.ZoomY == 1.0 && 320 ctx->_ImageTransferState == 0 /* no color tables, scale/bias, etc */) { 321 const SWcontext *swrast = SWRAST_CONTEXT(ctx); 322 323 if (swrast->NewState) 324 _swrast_validate_derived( ctx ); 325 326 if ((swrast->_RasterMask & ~CLIP_BIT) == 0) /* no blend, z-test, etc */ { 327 struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0]; 328 if (rb) { 329 struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb); 330 if (xrb && 331 xrb->pixmap && /* drawing to pixmap or window */ 332 _mesa_get_format_bits(xrb->Base.Base.Format, GL_ALPHA_BITS) == 0) { 333 return GL_TRUE; 334 } 335 } 336 } 337 } 338 return GL_FALSE; 339} 340 341 342/** 343 * This function implements glDrawPixels() with an XPutImage call when 344 * drawing to the front buffer (X Window drawable). 345 * The image format must be GL_BGRA to match the PF_8R8G8B pixel format. 346 */ 347static void 348xmesa_DrawPixels_8R8G8B( struct gl_context *ctx, 349 GLint x, GLint y, GLsizei width, GLsizei height, 350 GLenum format, GLenum type, 351 const struct gl_pixelstore_attrib *unpack, 352 const GLvoid *pixels ) 353{ 354 if (can_do_DrawPixels_8R8G8B(ctx, format, type)) { 355 const SWcontext *swrast = SWRAST_CONTEXT( ctx ); 356 struct gl_pixelstore_attrib clippedUnpack = *unpack; 357 int dstX = x; 358 int dstY = y; 359 int w = width; 360 int h = height; 361 362 if (swrast->NewState) 363 _swrast_validate_derived( ctx ); 364 365 if (unpack->BufferObj) { 366 /* unpack from PBO */ 367 GLubyte *buf; 368 if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, 369 format, type, INT_MAX, pixels)) { 370 _mesa_error(ctx, GL_INVALID_OPERATION, 371 "glDrawPixels(invalid PBO access)"); 372 return; 373 } 374 buf = (GLubyte *) ctx->Driver.MapBufferRange(ctx, 0, 375 unpack->BufferObj->Size, 376 GL_MAP_READ_BIT, 377 unpack->BufferObj, 378 MAP_INTERNAL); 379 if (!buf) { 380 return; /* error */ 381 } 382 pixels = ADD_POINTERS(buf, pixels); 383 } 384 385 if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) { 386 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 387 XMesaDisplay *dpy = xmesa->xm_visual->display; 388 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 389 const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */ 390 struct xmesa_renderbuffer *xrb 391 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); 392 const int srcX = clippedUnpack.SkipPixels; 393 const int srcY = clippedUnpack.SkipRows; 394 const int rowLength = clippedUnpack.RowLength; 395 XMesaImage ximage; 396 397 assert(xmesa->xm_visual->dithered_pf == PF_8R8G8B); 398 assert(xmesa->xm_visual->undithered_pf == PF_8R8G8B); 399 assert(dpy); 400 assert(gc); 401 402 /* This is a little tricky since all coordinates up to now have 403 * been in the OpenGL bottom-to-top orientation. X is top-to-bottom 404 * so we have to carefully compute the Y coordinates/addresses here. 405 */ 406 memset(&ximage, 0, sizeof(XMesaImage)); 407 ximage.width = width; 408 ximage.height = height; 409 ximage.format = ZPixmap; 410 ximage.data = (char *) pixels 411 + ((srcY + h - 1) * rowLength + srcX) * 4; 412 ximage.byte_order = LSBFirst; 413 ximage.bitmap_unit = 32; 414 ximage.bitmap_bit_order = LSBFirst; 415 ximage.bitmap_pad = 32; 416 ximage.depth = 32; 417 ximage.bits_per_pixel = 32; 418 ximage.bytes_per_line = -rowLength * 4; /* negative to flip image */ 419 /* it seems we don't need to set the ximage.red/green/blue_mask fields */ 420 /* flip Y axis for dest position */ 421 dstY = YFLIP(xrb, dstY) - h + 1; 422 XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h); 423 } 424 425 if (unpack->BufferObj) { 426 ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj, MAP_INTERNAL); 427 } 428 } 429 else { 430 /* software fallback */ 431 _swrast_DrawPixels(ctx, x, y, width, height, 432 format, type, unpack, pixels); 433 } 434} 435 436 437 438/** 439 * Check if we can do an optimized glDrawPixels into an 5R6G5B visual. 440 */ 441static GLboolean 442can_do_DrawPixels_5R6G5B(struct gl_context *ctx, GLenum format, GLenum type) 443{ 444 if (format == GL_RGB && 445 type == GL_UNSIGNED_SHORT_5_6_5 && 446 !ctx->Color.DitherFlag && /* no dithering */ 447 ctx->DrawBuffer && 448 _mesa_is_winsys_fbo(ctx->DrawBuffer) && 449 ctx->Pixel.ZoomX == 1.0 && /* no zooming */ 450 ctx->Pixel.ZoomY == 1.0 && 451 ctx->_ImageTransferState == 0 /* no color tables, scale/bias, etc */) { 452 const SWcontext *swrast = SWRAST_CONTEXT(ctx); 453 454 if (swrast->NewState) 455 _swrast_validate_derived( ctx ); 456 457 if ((swrast->_RasterMask & ~CLIP_BIT) == 0) /* no blend, z-test, etc */ { 458 struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0]; 459 if (rb) { 460 struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb); 461 if (xrb && 462 xrb->pixmap && /* drawing to pixmap or window */ 463 _mesa_get_format_bits(xrb->Base.Base.Format, GL_ALPHA_BITS) == 0) { 464 return GL_TRUE; 465 } 466 } 467 } 468 } 469 return GL_FALSE; 470} 471 472 473/** 474 * This function implements glDrawPixels() with an XPutImage call when 475 * drawing to the front buffer (X Window drawable). The image format 476 * must be GL_RGB and image type must be GL_UNSIGNED_SHORT_5_6_5 to 477 * match the PF_5R6G5B pixel format. 478 */ 479static void 480xmesa_DrawPixels_5R6G5B( struct gl_context *ctx, 481 GLint x, GLint y, GLsizei width, GLsizei height, 482 GLenum format, GLenum type, 483 const struct gl_pixelstore_attrib *unpack, 484 const GLvoid *pixels ) 485{ 486 if (can_do_DrawPixels_5R6G5B(ctx, format, type)) { 487 const SWcontext *swrast = SWRAST_CONTEXT( ctx ); 488 struct gl_pixelstore_attrib clippedUnpack = *unpack; 489 int dstX = x; 490 int dstY = y; 491 int w = width; 492 int h = height; 493 494 if (swrast->NewState) 495 _swrast_validate_derived( ctx ); 496 497 if (unpack->BufferObj) { 498 /* unpack from PBO */ 499 GLubyte *buf; 500 if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, 501 format, type, INT_MAX, pixels)) { 502 _mesa_error(ctx, GL_INVALID_OPERATION, 503 "glDrawPixels(invalid PBO access)"); 504 return; 505 } 506 buf = (GLubyte *) ctx->Driver.MapBufferRange(ctx, 0, 507 unpack->BufferObj->Size, 508 GL_MAP_READ_BIT, 509 unpack->BufferObj, 510 MAP_INTERNAL); 511 if (!buf) { 512 return; /* error */ 513 } 514 pixels = ADD_POINTERS(buf, pixels); 515 } 516 517 if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) { 518 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 519 XMesaDisplay *dpy = xmesa->xm_visual->display; 520 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 521 const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */ 522 struct xmesa_renderbuffer *xrb 523 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); 524 const int srcX = clippedUnpack.SkipPixels; 525 const int srcY = clippedUnpack.SkipRows; 526 const int rowLength = clippedUnpack.RowLength; 527 XMesaImage ximage; 528 529 assert(xmesa->xm_visual->undithered_pf == PF_5R6G5B); 530 assert(dpy); 531 assert(gc); 532 533 /* This is a little tricky since all coordinates up to now have 534 * been in the OpenGL bottom-to-top orientation. X is top-to-bottom 535 * so we have to carefully compute the Y coordinates/addresses here. 536 */ 537 memset(&ximage, 0, sizeof(XMesaImage)); 538 ximage.width = width; 539 ximage.height = height; 540 ximage.format = ZPixmap; 541 ximage.data = (char *) pixels 542 + ((srcY + h - 1) * rowLength + srcX) * 2; 543 ximage.byte_order = LSBFirst; 544 ximage.bitmap_unit = 16; 545 ximage.bitmap_bit_order = LSBFirst; 546 ximage.bitmap_pad = 16; 547 ximage.depth = 16; 548 ximage.bits_per_pixel = 16; 549 ximage.bytes_per_line = -rowLength * 2; /* negative to flip image */ 550 /* it seems we don't need to set the ximage.red/green/blue_mask fields */ 551 /* flip Y axis for dest position */ 552 dstY = YFLIP(xrb, dstY) - h + 1; 553 XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h); 554 } 555 556 if (unpack->BufferObj) { 557 ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj, MAP_INTERNAL); 558 } 559 } 560 else { 561 /* software fallback */ 562 _swrast_DrawPixels(ctx, x, y, width, height, 563 format, type, unpack, pixels); 564 } 565} 566 567 568/** 569 * Determine if we can do an optimized glCopyPixels. 570 */ 571static GLboolean 572can_do_CopyPixels(struct gl_context *ctx, GLenum type) 573{ 574 if (type == GL_COLOR && 575 ctx->_ImageTransferState == 0 && /* no color tables, scale/bias, etc */ 576 ctx->Pixel.ZoomX == 1.0 && /* no zooming */ 577 ctx->Pixel.ZoomY == 1.0 && 578 ctx->Color.DrawBuffer[0] == GL_FRONT && /* copy to front buf */ 579 ctx->Pixel.ReadBuffer == GL_FRONT && /* copy from front buf */ 580 ctx->ReadBuffer->_ColorReadBuffer && 581 ctx->DrawBuffer->_ColorDrawBuffers[0]) { 582 const SWcontext *swrast = SWRAST_CONTEXT( ctx ); 583 584 if (swrast->NewState) 585 _swrast_validate_derived( ctx ); 586 587 if ((swrast->_RasterMask & ~CLIP_BIT) == 0x0 && 588 ctx->ReadBuffer && 589 ctx->ReadBuffer->_ColorReadBuffer && 590 ctx->DrawBuffer && 591 ctx->DrawBuffer->_ColorDrawBuffers[0]) { 592 struct xmesa_renderbuffer *srcXrb 593 = xmesa_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer); 594 struct xmesa_renderbuffer *dstXrb 595 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); 596 if (srcXrb->pixmap && dstXrb->pixmap) { 597 return GL_TRUE; 598 } 599 } 600 } 601 return GL_FALSE; 602} 603 604 605/** 606 * Implement glCopyPixels for the front color buffer (or back buffer Pixmap) 607 * for the color buffer. Don't support zooming, pixel transfer, etc. 608 * We do support copying from one window to another, ala glXMakeCurrentRead. 609 */ 610static void 611xmesa_CopyPixels( struct gl_context *ctx, 612 GLint srcx, GLint srcy, GLsizei width, GLsizei height, 613 GLint destx, GLint desty, GLenum type ) 614{ 615 if (can_do_CopyPixels(ctx, type)) { 616 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 617 XMesaDisplay *dpy = xmesa->xm_visual->display; 618 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 619 const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */ 620 struct xmesa_renderbuffer *srcXrb 621 = xmesa_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer); 622 struct xmesa_renderbuffer *dstXrb 623 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); 624 625 assert(dpy); 626 assert(gc); 627 628 /* Note: we don't do any special clipping work here. We could, 629 * but X will do it for us. 630 */ 631 srcy = YFLIP(srcXrb, srcy) - height + 1; 632 desty = YFLIP(dstXrb, desty) - height + 1; 633 XCopyArea(dpy, srcXrb->pixmap, dstXrb->pixmap, gc, 634 srcx, srcy, width, height, destx, desty); 635 } 636 else { 637 _swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type ); 638 } 639} 640 641 642 643 644/* 645 * Every driver should implement a GetString function in order to 646 * return a meaningful GL_RENDERER string. 647 */ 648static const GLubyte * 649get_string( struct gl_context *ctx, GLenum name ) 650{ 651 (void) ctx; 652 switch (name) { 653 case GL_RENDERER: 654 return (const GLubyte *) "Mesa X11"; 655 case GL_VENDOR: 656 return NULL; 657 default: 658 return NULL; 659 } 660} 661 662 663/* 664 * We implement the glEnable function only because we care about 665 * dither enable/disable. 666 */ 667static void 668enable( struct gl_context *ctx, GLenum pname, GLboolean state ) 669{ 670 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 671 672 switch (pname) { 673 case GL_DITHER: 674 if (state) 675 xmesa->pixelformat = xmesa->xm_visual->dithered_pf; 676 else 677 xmesa->pixelformat = xmesa->xm_visual->undithered_pf; 678 break; 679 default: 680 ; /* silence compiler warning */ 681 } 682} 683 684 685/** 686 * Called when the driver should update its state, based on the new_state 687 * flags. 688 */ 689static void 690xmesa_update_state(struct gl_context *ctx) 691{ 692 GLbitfield new_state = ctx->NewState; 693 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 694 695 if (new_state & (_NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT)) 696 _mesa_update_draw_buffer_bounds(ctx, ctx->DrawBuffer); 697 698 /* Propagate statechange information to swrast and swrast_setup 699 * modules. The X11 driver has no internal GL-dependent state. 700 */ 701 _swrast_InvalidateState( ctx, new_state ); 702 _tnl_InvalidateState( ctx, new_state ); 703 _swsetup_InvalidateState( ctx, new_state ); 704 705 if (_mesa_is_user_fbo(ctx->DrawBuffer)) 706 return; 707 708 /* 709 * GL_DITHER, GL_READ/DRAW_BUFFER, buffer binding state, etc. effect 710 * renderbuffer span/clear funcs. 711 * Check _NEW_COLOR to detect dither enable/disable. 712 */ 713 if (new_state & (_NEW_COLOR | _NEW_BUFFERS)) { 714 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 715 struct xmesa_renderbuffer *front_xrb, *back_xrb; 716 717 front_xrb = xmbuf->frontxrb; 718 if (front_xrb) { 719 front_xrb->clearFunc = clear_pixmap; 720 } 721 722 back_xrb = xmbuf->backxrb; 723 if (back_xrb) { 724 if (xmbuf->backxrb->pixmap) { 725 back_xrb->clearFunc = clear_pixmap; 726 } 727 else { 728 switch (xmesa->xm_visual->BitsPerPixel) { 729 case 16: 730 back_xrb->clearFunc = clear_16bit_ximage; 731 break; 732 case 24: 733 back_xrb->clearFunc = clear_24bit_ximage; 734 break; 735 case 32: 736 back_xrb->clearFunc = clear_32bit_ximage; 737 break; 738 default: 739 back_xrb->clearFunc = clear_nbit_ximage; 740 break; 741 } 742 } 743 } 744 } 745} 746 747 748/** 749 * Called by glViewport. 750 * This is a good time for us to poll the current X window size and adjust 751 * our renderbuffers to match the current window size. 752 * Remember, we have no opportunity to respond to conventional 753 * X Resize/StructureNotify events since the X driver has no event loop. 754 * Thus, we poll. 755 * Note that this trick isn't fool-proof. If the application never calls 756 * glViewport, our notion of the current window size may be incorrect. 757 * That problem led to the GLX_MESA_resize_buffers extension. 758 */ 759static void 760xmesa_viewport(struct gl_context *ctx) 761{ 762 XMesaContext xmctx = XMESA_CONTEXT(ctx); 763 XMesaBuffer xmdrawbuf = XMESA_BUFFER(ctx->WinSysDrawBuffer); 764 XMesaBuffer xmreadbuf = XMESA_BUFFER(ctx->WinSysReadBuffer); 765 xmesa_check_and_update_buffer_size(xmctx, xmdrawbuf); 766 xmesa_check_and_update_buffer_size(xmctx, xmreadbuf); 767} 768 769 770#if ENABLE_EXT_timer_query 771 772/* 773 * The GL_EXT_timer_query extension is not enabled for the XServer 774 * indirect renderer. Not sure about how/if wrapping of gettimeofday() 775 * is done, etc. 776 */ 777 778struct xmesa_query_object 779{ 780 struct gl_query_object Base; 781 struct timeval StartTime; 782}; 783 784 785static struct gl_query_object * 786xmesa_new_query_object(struct gl_context *ctx, GLuint id) 787{ 788 struct xmesa_query_object *q = CALLOC_STRUCT(xmesa_query_object); 789 if (q) { 790 q->Base.Id = id; 791 q->Base.Ready = GL_TRUE; 792 } 793 return &q->Base; 794} 795 796 797static void 798xmesa_begin_query(struct gl_context *ctx, struct gl_query_object *q) 799{ 800 if (q->Target == GL_TIME_ELAPSED_EXT) { 801 struct xmesa_query_object *xq = (struct xmesa_query_object *) q; 802 (void) gettimeofday(&xq->StartTime, NULL); 803 } 804} 805 806 807/** 808 * Return the difference between the two given times in microseconds. 809 */ 810static GLuint64EXT 811time_diff(const struct timeval *t0, const struct timeval *t1) 812{ 813 GLuint64EXT seconds0 = t0->tv_sec & 0xff; /* 0 .. 255 seconds */ 814 GLuint64EXT seconds1 = t1->tv_sec & 0xff; /* 0 .. 255 seconds */ 815 GLuint64EXT nanosec0 = (seconds0 * 1000000 + t0->tv_usec) * 1000; 816 GLuint64EXT nanosec1 = (seconds1 * 1000000 + t1->tv_usec) * 1000; 817 return nanosec1 - nanosec0; 818} 819 820 821static void 822xmesa_end_query(struct gl_context *ctx, struct gl_query_object *q) 823{ 824 if (q->Target == GL_TIME_ELAPSED_EXT) { 825 struct xmesa_query_object *xq = (struct xmesa_query_object *) q; 826 struct timeval endTime; 827 (void) gettimeofday(&endTime, NULL); 828 /* result is in nanoseconds! */ 829 q->Result = time_diff(&xq->StartTime, &endTime); 830 } 831 q->Ready = GL_TRUE; 832} 833 834#endif /* ENABLE_timer_query */ 835 836 837/** 838 * Initialize the device driver function table with the functions 839 * we implement in this driver. 840 */ 841void 842xmesa_init_driver_functions( XMesaVisual xmvisual, 843 struct dd_function_table *driver ) 844{ 845 driver->GetString = get_string; 846 driver->UpdateState = xmesa_update_state; 847 driver->Flush = flush; 848 driver->Finish = finish; 849 driver->ColorMask = color_mask; 850 driver->Enable = enable; 851 driver->Viewport = xmesa_viewport; 852 if (TEST_META_FUNCS) { 853 driver->Clear = _mesa_meta_Clear; 854 driver->CopyPixels = _mesa_meta_CopyPixels; 855 driver->BlitFramebuffer = _mesa_meta_and_swrast_BlitFramebuffer; 856 driver->DrawPixels = _mesa_meta_DrawPixels; 857 driver->Bitmap = _mesa_meta_Bitmap; 858 } 859 else { 860 driver->Clear = clear_buffers; 861 driver->CopyPixels = xmesa_CopyPixels; 862 if (xmvisual->undithered_pf == PF_8R8G8B && 863 xmvisual->dithered_pf == PF_8R8G8B && 864 xmvisual->BitsPerPixel == 32) { 865 driver->DrawPixels = xmesa_DrawPixels_8R8G8B; 866 } 867 else if (xmvisual->undithered_pf == PF_5R6G5B) { 868 driver->DrawPixels = xmesa_DrawPixels_5R6G5B; 869 } 870 } 871 872 driver->MapRenderbuffer = xmesa_MapRenderbuffer; 873 driver->UnmapRenderbuffer = xmesa_UnmapRenderbuffer; 874 875 driver->GenerateMipmap = _mesa_generate_mipmap; 876 877#if ENABLE_EXT_timer_query 878 driver->NewQueryObject = xmesa_new_query_object; 879 driver->BeginQuery = xmesa_begin_query; 880 driver->EndQuery = xmesa_end_query; 881#endif 882} 883 884 885#define XMESA_NEW_POINT (_NEW_POINT | \ 886 _NEW_RENDERMODE | \ 887 _SWRAST_NEW_RASTERMASK) 888 889#define XMESA_NEW_LINE (_NEW_LINE | \ 890 _NEW_TEXTURE | \ 891 _NEW_LIGHT | \ 892 _NEW_DEPTH | \ 893 _NEW_RENDERMODE | \ 894 _SWRAST_NEW_RASTERMASK) 895 896#define XMESA_NEW_TRIANGLE (_NEW_POLYGON | \ 897 _NEW_TEXTURE | \ 898 _NEW_LIGHT | \ 899 _NEW_DEPTH | \ 900 _NEW_RENDERMODE | \ 901 _SWRAST_NEW_RASTERMASK) 902 903 904/** 905 * Extend the software rasterizer with our line/point/triangle 906 * functions. 907 * Called during context creation only. 908 */ 909void xmesa_register_swrast_functions( struct gl_context *ctx ) 910{ 911 SWcontext *swrast = SWRAST_CONTEXT( ctx ); 912 913 swrast->choose_point = xmesa_choose_point; 914 swrast->choose_line = xmesa_choose_line; 915 swrast->choose_triangle = xmesa_choose_triangle; 916 917 /* XXX these lines have no net effect. Remove??? */ 918 swrast->InvalidatePointMask |= XMESA_NEW_POINT; 919 swrast->InvalidateLineMask |= XMESA_NEW_LINE; 920 swrast->InvalidateTriangleMask |= XMESA_NEW_TRIANGLE; 921} 922