xm_dd.c revision 093dc9e548537e6c77e33064a584f849ad90dfa5
1/* 2 * Mesa 3-D graphics library 3 * Version: 6.5.2 4 * 5 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR 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/buffers.h" 34#include "main/context.h" 35#include "main/colormac.h" 36#include "main/depth.h" 37#include "main/drawpix.h" 38#include "main/extensions.h" 39#include "main/framebuffer.h" 40#include "main/macros.h" 41#include "main/image.h" 42#include "main/imports.h" 43#include "main/mtypes.h" 44#include "main/pbo.h" 45#include "main/state.h" 46#include "main/texobj.h" 47#include "main/teximage.h" 48#include "main/texstore.h" 49#include "main/texformat.h" 50#include "swrast/swrast.h" 51#include "swrast/s_context.h" 52#include "swrast_setup/swrast_setup.h" 53#include "tnl/tnl.h" 54#include "tnl/t_context.h" 55#include "drivers/common/meta.h" 56#include "xmesaP.h" 57 58 59 60/* 61 * Dithering kernels and lookup tables. 62 */ 63 64const int xmesa_kernel8[DITH_DY * DITH_DX] = { 65 0 * MAXC, 8 * MAXC, 2 * MAXC, 10 * MAXC, 66 12 * MAXC, 4 * MAXC, 14 * MAXC, 6 * MAXC, 67 3 * MAXC, 11 * MAXC, 1 * MAXC, 9 * MAXC, 68 15 * MAXC, 7 * MAXC, 13 * MAXC, 5 * MAXC, 69}; 70 71const short xmesa_HPCR_DRGB[3][2][16] = { 72 { 73 { 16, -4, 1,-11, 14, -6, 3, -9, 15, -5, 2,-10, 13, -7, 4, -8}, 74 {-15, 5, 0, 12,-13, 7, -2, 10,-14, 6, -1, 11,-12, 8, -3, 9} 75 }, 76 { 77 {-11, 15, -7, 3, -8, 14, -4, 2,-10, 16, -6, 4, -9, 13, -5, 1}, 78 { 12,-14, 8, -2, 9,-13, 5, -1, 11,-15, 7, -3, 10,-12, 6, 0} 79 }, 80 { 81 { 6,-18, 26,-14, 2,-22, 30,-10, 8,-16, 28,-12, 4,-20, 32, -8}, 82 { -4, 20,-24, 16, 0, 24,-28, 12, -6, 18,-26, 14, -2, 22,-30, 10} 83 } 84}; 85 86const int xmesa_kernel1[16] = { 87 0*47, 9*47, 4*47, 12*47, /* 47 = (255*3)/16 */ 88 6*47, 2*47, 14*47, 8*47, 89 10*47, 1*47, 5*47, 11*47, 90 7*47, 13*47, 3*47, 15*47 91}; 92 93 94static void 95finish_or_flush( struct gl_context *ctx ) 96{ 97 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 98 if (xmesa) { 99 _glthread_LOCK_MUTEX(_xmesa_lock); 100 XSync( xmesa->display, False ); 101 _glthread_UNLOCK_MUTEX(_xmesa_lock); 102 } 103} 104 105 106static void 107clear_color( struct gl_context *ctx, 108 const union gl_color_union color ) 109{ 110 if (ctx->DrawBuffer->Name == 0) { 111 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 112 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 113 114 UNCLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color.f[0]); 115 UNCLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color.f[1]); 116 UNCLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color.f[2]); 117 UNCLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color.f[3]); 118 xmesa->clearpixel = xmesa_color_to_pixel( ctx, 119 xmesa->clearcolor[0], 120 xmesa->clearcolor[1], 121 xmesa->clearcolor[2], 122 xmesa->clearcolor[3], 123 xmesa->xm_visual->undithered_pf ); 124 _glthread_LOCK_MUTEX(_xmesa_lock); 125 XMesaSetForeground( xmesa->display, xmbuf->cleargc, 126 xmesa->clearpixel ); 127 _glthread_UNLOCK_MUTEX(_xmesa_lock); 128 } 129} 130 131 132 133/* Implements glColorMask() */ 134static void 135color_mask(struct gl_context *ctx, 136 GLboolean rmask, GLboolean gmask, GLboolean bmask, GLboolean amask) 137{ 138 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 139 XMesaBuffer xmbuf; 140 const int xclass = xmesa->xm_visual->visualType; 141 (void) amask; 142 143 if (ctx->DrawBuffer->Name != 0) 144 return; 145 146 xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 147 148 if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) { 149 unsigned long m; 150 if (rmask && gmask && bmask) { 151 m = ((unsigned long)~0L); 152 } 153 else { 154 m = 0; 155 if (rmask) m |= GET_REDMASK(xmesa->xm_visual); 156 if (gmask) m |= GET_GREENMASK(xmesa->xm_visual); 157 if (bmask) m |= GET_BLUEMASK(xmesa->xm_visual); 158 } 159 XMesaSetPlaneMask( xmesa->display, xmbuf->cleargc, m ); 160 } 161} 162 163 164 165/**********************************************************************/ 166/*** glClear implementations ***/ 167/**********************************************************************/ 168 169 170/** 171 * Clear the front or back color buffer, if it's implemented with a pixmap. 172 */ 173static void 174clear_pixmap(struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 175 GLint x, GLint y, GLint width, GLint height) 176{ 177 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 178 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 179 180 assert(xmbuf); 181 assert(xrb->pixmap); 182 assert(xmesa); 183 assert(xmesa->display); 184 assert(xrb->pixmap); 185 assert(xmbuf->cleargc); 186 187 XMesaFillRectangle( xmesa->display, xrb->pixmap, xmbuf->cleargc, 188 x, xrb->Base.Height - y - height, 189 width, height ); 190} 191 192 193static void 194clear_8bit_ximage( struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 195 GLint x, GLint y, GLint width, GLint height ) 196{ 197 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 198 GLint i; 199 for (i = 0; i < height; i++) { 200 GLubyte *ptr = PIXEL_ADDR1(xrb, x, y + i); 201 memset( ptr, xmesa->clearpixel, width ); 202 } 203} 204 205 206static void 207clear_HPCR_ximage( struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 208 GLint x, GLint y, GLint width, GLint height ) 209{ 210 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 211 GLint i; 212 for (i = y; i < y + height; i++) { 213 GLubyte *ptr = PIXEL_ADDR1( xrb, x, i ); 214 int j; 215 const GLubyte *sptr = xmesa->xm_visual->hpcr_clear_ximage_pattern[0]; 216 if (i & 1) { 217 sptr += 16; 218 } 219 for (j = x; j < x + width; j++) { 220 *ptr = sptr[j&15]; 221 ptr++; 222 } 223 } 224} 225 226 227static void 228clear_16bit_ximage( struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 229 GLint x, GLint y, GLint width, GLint height) 230{ 231 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 232 GLuint pixel = (GLuint) xmesa->clearpixel; 233 GLint i, j; 234 235 if (xmesa->swapbytes) { 236 pixel = ((pixel >> 8) & 0x00ff) | ((pixel << 8) & 0xff00); 237 } 238 239 for (j = 0; j < height; j++) { 240 GLushort *ptr2 = PIXEL_ADDR2(xrb, x, y + j); 241 for (i = 0; i < width; i++) { 242 ptr2[i] = pixel; 243 } 244 } 245} 246 247 248/* Optimized code provided by Nozomi Ytow <noz@xfree86.org> */ 249static void 250clear_24bit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 251 GLint x, GLint y, GLint width, GLint height) 252{ 253 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 254 const GLubyte r = xmesa->clearcolor[0]; 255 const GLubyte g = xmesa->clearcolor[1]; 256 const GLubyte b = xmesa->clearcolor[2]; 257 258 if (r == g && g == b) { 259 /* same value for all three components (gray) */ 260 GLint j; 261 for (j = 0; j < height; j++) { 262 bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j); 263 memset(ptr3, r, 3 * width); 264 } 265 } 266 else { 267 /* non-gray clear color */ 268 GLint i, j; 269 for (j = 0; j < height; j++) { 270 bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j); 271 for (i = 0; i < width; i++) { 272 ptr3->r = r; 273 ptr3->g = g; 274 ptr3->b = b; 275 ptr3++; 276 } 277 } 278 } 279} 280 281 282static void 283clear_32bit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 284 GLint x, GLint y, GLint width, GLint height) 285{ 286 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 287 register GLuint pixel = (GLuint) xmesa->clearpixel; 288 289 if (!xrb->ximage) 290 return; 291 292 if (xmesa->swapbytes) { 293 pixel = ((pixel >> 24) & 0x000000ff) 294 | ((pixel >> 8) & 0x0000ff00) 295 | ((pixel << 8) & 0x00ff0000) 296 | ((pixel << 24) & 0xff000000); 297 } 298 299 if (width == xrb->Base.Width && height == xrb->Base.Height) { 300 /* clearing whole buffer */ 301 const GLuint n = xrb->Base.Width * xrb->Base.Height; 302 GLuint *ptr4 = (GLuint *) xrb->ximage->data; 303 if (pixel == 0) { 304 /* common case */ 305 memset(ptr4, pixel, 4 * n); 306 } 307 else { 308 GLuint i; 309 for (i = 0; i < n; i++) 310 ptr4[i] = pixel; 311 } 312 } 313 else { 314 /* clearing scissored region */ 315 GLint i, j; 316 for (j = 0; j < height; j++) { 317 GLuint *ptr4 = PIXEL_ADDR4(xrb, x, y + j); 318 for (i = 0; i < width; i++) { 319 ptr4[i] = pixel; 320 } 321 } 322 } 323} 324 325 326static void 327clear_nbit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb, 328 GLint x, GLint y, GLint width, GLint height) 329{ 330 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 331 XMesaImage *img = xrb->ximage; 332 GLint i, j; 333 334 /* TODO: optimize this */ 335 y = YFLIP(xrb, y); 336 for (j = 0; j < height; j++) { 337 for (i = 0; i < width; i++) { 338 XMesaPutPixel(img, x+i, y-j, xmesa->clearpixel); 339 } 340 } 341} 342 343 344 345static void 346clear_buffers(struct gl_context *ctx, GLbitfield buffers) 347{ 348 if (ctx->DrawBuffer->Name == 0) { 349 /* this is a window system framebuffer */ 350 const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask[0]; 351 XMesaBuffer b = XMESA_BUFFER(ctx->DrawBuffer); 352 const GLint x = ctx->DrawBuffer->_Xmin; 353 const GLint y = ctx->DrawBuffer->_Ymin; 354 const GLint width = ctx->DrawBuffer->_Xmax - x; 355 const GLint height = ctx->DrawBuffer->_Ymax - y; 356 357 /* we can't handle color or index masking */ 358 if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) { 359 if (buffers & BUFFER_BIT_FRONT_LEFT) { 360 /* clear front color buffer */ 361 struct gl_renderbuffer *frontRb 362 = ctx->DrawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer; 363 if (b->frontxrb == xmesa_renderbuffer(frontRb)) { 364 /* renderbuffer is not wrapped - great! */ 365 b->frontxrb->clearFunc(ctx, b->frontxrb, x, y, width, height); 366 buffers &= ~BUFFER_BIT_FRONT_LEFT; 367 } 368 else { 369 /* we can't directly clear an alpha-wrapped color buffer */ 370 } 371 } 372 if (buffers & BUFFER_BIT_BACK_LEFT) { 373 /* clear back color buffer */ 374 struct gl_renderbuffer *backRb 375 = ctx->DrawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer; 376 if (b->backxrb == xmesa_renderbuffer(backRb)) { 377 /* renderbuffer is not wrapped - great! */ 378 b->backxrb->clearFunc(ctx, b->backxrb, x, y, width, height); 379 buffers &= ~BUFFER_BIT_BACK_LEFT; 380 } 381 } 382 } 383 } 384 if (buffers) 385 _swrast_Clear(ctx, buffers); 386} 387 388 389/* XXX these functions haven't been tested in the Xserver environment */ 390 391 392/** 393 * Check if we can do an optimized glDrawPixels into an 8R8G8B visual. 394 */ 395static GLboolean 396can_do_DrawPixels_8R8G8B(struct gl_context *ctx, GLenum format, GLenum type) 397{ 398 if (format == GL_BGRA && 399 type == GL_UNSIGNED_BYTE && 400 ctx->DrawBuffer && 401 ctx->DrawBuffer->Name == 0 && 402 ctx->Pixel.ZoomX == 1.0 && /* no zooming */ 403 ctx->Pixel.ZoomY == 1.0 && 404 ctx->_ImageTransferState == 0 /* no color tables, scale/bias, etc */) { 405 const SWcontext *swrast = SWRAST_CONTEXT(ctx); 406 407 if (swrast->NewState) 408 _swrast_validate_derived( ctx ); 409 410 if ((swrast->_RasterMask & ~CLIP_BIT) == 0) /* no blend, z-test, etc */ { 411 struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0]; 412 if (rb) { 413 struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb->Wrapped); 414 if (xrb && 415 xrb->pixmap && /* drawing to pixmap or window */ 416 _mesa_get_format_bits(xrb->Base.Format, GL_ALPHA_BITS) == 0) { 417 return GL_TRUE; 418 } 419 } 420 } 421 } 422 return GL_FALSE; 423} 424 425 426/** 427 * This function implements glDrawPixels() with an XPutImage call when 428 * drawing to the front buffer (X Window drawable). 429 * The image format must be GL_BGRA to match the PF_8R8G8B pixel format. 430 */ 431static void 432xmesa_DrawPixels_8R8G8B( struct gl_context *ctx, 433 GLint x, GLint y, GLsizei width, GLsizei height, 434 GLenum format, GLenum type, 435 const struct gl_pixelstore_attrib *unpack, 436 const GLvoid *pixels ) 437{ 438 if (can_do_DrawPixels_8R8G8B(ctx, format, type)) { 439 const SWcontext *swrast = SWRAST_CONTEXT( ctx ); 440 struct gl_pixelstore_attrib clippedUnpack = *unpack; 441 int dstX = x; 442 int dstY = y; 443 int w = width; 444 int h = height; 445 446 if (swrast->NewState) 447 _swrast_validate_derived( ctx ); 448 449 if (_mesa_is_bufferobj(unpack->BufferObj)) { 450 /* unpack from PBO */ 451 GLubyte *buf; 452 if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, 453 format, type, INT_MAX, pixels)) { 454 _mesa_error(ctx, GL_INVALID_OPERATION, 455 "glDrawPixels(invalid PBO access)"); 456 return; 457 } 458 buf = (GLubyte *) ctx->Driver.MapBufferRange(ctx, 0, 459 unpack->BufferObj->Size, 460 GL_MAP_READ_BIT, 461 unpack->BufferObj); 462 if (!buf) { 463 /* buffer is already mapped - that's an error */ 464 _mesa_error(ctx, GL_INVALID_OPERATION, 465 "glDrawPixels(PBO is mapped)"); 466 return; 467 } 468 pixels = ADD_POINTERS(buf, pixels); 469 } 470 471 if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) { 472 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 473 XMesaDisplay *dpy = xmesa->xm_visual->display; 474 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 475 const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */ 476 struct xmesa_renderbuffer *xrb 477 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped); 478 const int srcX = clippedUnpack.SkipPixels; 479 const int srcY = clippedUnpack.SkipRows; 480 const int rowLength = clippedUnpack.RowLength; 481 XMesaImage ximage; 482 483 ASSERT(xmesa->xm_visual->dithered_pf == PF_8R8G8B); 484 ASSERT(xmesa->xm_visual->undithered_pf == PF_8R8G8B); 485 ASSERT(dpy); 486 ASSERT(gc); 487 488 /* This is a little tricky since all coordinates up to now have 489 * been in the OpenGL bottom-to-top orientation. X is top-to-bottom 490 * so we have to carefully compute the Y coordinates/addresses here. 491 */ 492 memset(&ximage, 0, sizeof(XMesaImage)); 493 ximage.width = width; 494 ximage.height = height; 495 ximage.format = ZPixmap; 496 ximage.data = (char *) pixels 497 + ((srcY + h - 1) * rowLength + srcX) * 4; 498 ximage.byte_order = LSBFirst; 499 ximage.bitmap_unit = 32; 500 ximage.bitmap_bit_order = LSBFirst; 501 ximage.bitmap_pad = 32; 502 ximage.depth = 32; 503 ximage.bits_per_pixel = 32; 504 ximage.bytes_per_line = -rowLength * 4; /* negative to flip image */ 505 /* it seems we don't need to set the ximage.red/green/blue_mask fields */ 506 /* flip Y axis for dest position */ 507 dstY = YFLIP(xrb, dstY) - h + 1; 508 XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h); 509 } 510 511 if (_mesa_is_bufferobj(unpack->BufferObj)) { 512 ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj); 513 } 514 } 515 else { 516 /* software fallback */ 517 _swrast_DrawPixels(ctx, x, y, width, height, 518 format, type, unpack, pixels); 519 } 520} 521 522 523 524/** 525 * Check if we can do an optimized glDrawPixels into an 5R6G5B visual. 526 */ 527static GLboolean 528can_do_DrawPixels_5R6G5B(struct gl_context *ctx, GLenum format, GLenum type) 529{ 530 if (format == GL_RGB && 531 type == GL_UNSIGNED_SHORT_5_6_5 && 532 !ctx->Color.DitherFlag && /* no dithering */ 533 ctx->DrawBuffer && 534 ctx->DrawBuffer->Name == 0 && 535 ctx->Pixel.ZoomX == 1.0 && /* no zooming */ 536 ctx->Pixel.ZoomY == 1.0 && 537 ctx->_ImageTransferState == 0 /* no color tables, scale/bias, etc */) { 538 const SWcontext *swrast = SWRAST_CONTEXT(ctx); 539 540 if (swrast->NewState) 541 _swrast_validate_derived( ctx ); 542 543 if ((swrast->_RasterMask & ~CLIP_BIT) == 0) /* no blend, z-test, etc */ { 544 struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0]; 545 if (rb) { 546 struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb->Wrapped); 547 if (xrb && 548 xrb->pixmap && /* drawing to pixmap or window */ 549 _mesa_get_format_bits(xrb->Base.Format, GL_ALPHA_BITS) == 0) { 550 return GL_TRUE; 551 } 552 } 553 } 554 } 555 return GL_FALSE; 556} 557 558 559/** 560 * This function implements glDrawPixels() with an XPutImage call when 561 * drawing to the front buffer (X Window drawable). The image format 562 * must be GL_RGB and image type must be GL_UNSIGNED_SHORT_5_6_5 to 563 * match the PF_5R6G5B pixel format. 564 */ 565static void 566xmesa_DrawPixels_5R6G5B( struct gl_context *ctx, 567 GLint x, GLint y, GLsizei width, GLsizei height, 568 GLenum format, GLenum type, 569 const struct gl_pixelstore_attrib *unpack, 570 const GLvoid *pixels ) 571{ 572 if (can_do_DrawPixels_5R6G5B(ctx, format, type)) { 573 const SWcontext *swrast = SWRAST_CONTEXT( ctx ); 574 struct gl_pixelstore_attrib clippedUnpack = *unpack; 575 int dstX = x; 576 int dstY = y; 577 int w = width; 578 int h = height; 579 580 if (swrast->NewState) 581 _swrast_validate_derived( ctx ); 582 583 if (_mesa_is_bufferobj(unpack->BufferObj)) { 584 /* unpack from PBO */ 585 GLubyte *buf; 586 if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, 587 format, type, INT_MAX, pixels)) { 588 _mesa_error(ctx, GL_INVALID_OPERATION, 589 "glDrawPixels(invalid PBO access)"); 590 return; 591 } 592 buf = (GLubyte *) ctx->Driver.MapBufferRange(ctx, 0, 593 unpack->BufferObj->Size, 594 GL_MAP_READ_BIT, 595 unpack->BufferObj); 596 if (!buf) { 597 /* buffer is already mapped - that's an error */ 598 _mesa_error(ctx, GL_INVALID_OPERATION, 599 "glDrawPixels(PBO is mapped)"); 600 return; 601 } 602 pixels = ADD_POINTERS(buf, pixels); 603 } 604 605 if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) { 606 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 607 XMesaDisplay *dpy = xmesa->xm_visual->display; 608 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 609 const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */ 610 struct xmesa_renderbuffer *xrb 611 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped); 612 const int srcX = clippedUnpack.SkipPixels; 613 const int srcY = clippedUnpack.SkipRows; 614 const int rowLength = clippedUnpack.RowLength; 615 XMesaImage ximage; 616 617 ASSERT(xmesa->xm_visual->undithered_pf == PF_5R6G5B); 618 ASSERT(dpy); 619 ASSERT(gc); 620 621 /* This is a little tricky since all coordinates up to now have 622 * been in the OpenGL bottom-to-top orientation. X is top-to-bottom 623 * so we have to carefully compute the Y coordinates/addresses here. 624 */ 625 memset(&ximage, 0, sizeof(XMesaImage)); 626 ximage.width = width; 627 ximage.height = height; 628 ximage.format = ZPixmap; 629 ximage.data = (char *) pixels 630 + ((srcY + h - 1) * rowLength + srcX) * 2; 631 ximage.byte_order = LSBFirst; 632 ximage.bitmap_unit = 16; 633 ximage.bitmap_bit_order = LSBFirst; 634 ximage.bitmap_pad = 16; 635 ximage.depth = 16; 636 ximage.bits_per_pixel = 16; 637 ximage.bytes_per_line = -rowLength * 2; /* negative to flip image */ 638 /* it seems we don't need to set the ximage.red/green/blue_mask fields */ 639 /* flip Y axis for dest position */ 640 dstY = YFLIP(xrb, dstY) - h + 1; 641 XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h); 642 } 643 644 if (unpack->BufferObj->Name) { 645 ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj); 646 } 647 } 648 else { 649 /* software fallback */ 650 _swrast_DrawPixels(ctx, x, y, width, height, 651 format, type, unpack, pixels); 652 } 653} 654 655 656/** 657 * Determine if we can do an optimized glCopyPixels. 658 */ 659static GLboolean 660can_do_CopyPixels(struct gl_context *ctx, GLenum type) 661{ 662 if (type == GL_COLOR && 663 ctx->_ImageTransferState == 0 && /* no color tables, scale/bias, etc */ 664 ctx->Pixel.ZoomX == 1.0 && /* no zooming */ 665 ctx->Pixel.ZoomY == 1.0 && 666 ctx->Color.DrawBuffer[0] == GL_FRONT && /* copy to front buf */ 667 ctx->Pixel.ReadBuffer == GL_FRONT && /* copy from front buf */ 668 ctx->ReadBuffer->_ColorReadBuffer && 669 ctx->DrawBuffer->_ColorDrawBuffers[0]) { 670 const SWcontext *swrast = SWRAST_CONTEXT( ctx ); 671 672 if (swrast->NewState) 673 _swrast_validate_derived( ctx ); 674 675 if ((swrast->_RasterMask & ~CLIP_BIT) == 0x0 && 676 ctx->ReadBuffer && 677 ctx->ReadBuffer->_ColorReadBuffer && 678 ctx->DrawBuffer && 679 ctx->DrawBuffer->_ColorDrawBuffers[0]) { 680 struct xmesa_renderbuffer *srcXrb 681 = xmesa_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer->Wrapped); 682 struct xmesa_renderbuffer *dstXrb 683 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped); 684 if (srcXrb->pixmap && dstXrb->pixmap) { 685 return GL_TRUE; 686 } 687 } 688 } 689 return GL_FALSE; 690} 691 692 693/** 694 * Implement glCopyPixels for the front color buffer (or back buffer Pixmap) 695 * for the color buffer. Don't support zooming, pixel transfer, etc. 696 * We do support copying from one window to another, ala glXMakeCurrentRead. 697 */ 698static void 699xmesa_CopyPixels( struct gl_context *ctx, 700 GLint srcx, GLint srcy, GLsizei width, GLsizei height, 701 GLint destx, GLint desty, GLenum type ) 702{ 703 if (can_do_CopyPixels(ctx, type)) { 704 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 705 XMesaDisplay *dpy = xmesa->xm_visual->display; 706 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 707 const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */ 708 struct xmesa_renderbuffer *srcXrb 709 = xmesa_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer->Wrapped); 710 struct xmesa_renderbuffer *dstXrb 711 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped); 712 713 ASSERT(dpy); 714 ASSERT(gc); 715 716 /* Note: we don't do any special clipping work here. We could, 717 * but X will do it for us. 718 */ 719 srcy = YFLIP(srcXrb, srcy) - height + 1; 720 desty = YFLIP(dstXrb, desty) - height + 1; 721 XCopyArea(dpy, srcXrb->pixmap, dstXrb->pixmap, gc, 722 srcx, srcy, width, height, destx, desty); 723 } 724 else { 725 _swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type ); 726 } 727} 728 729 730 731 732/* 733 * Every driver should implement a GetString function in order to 734 * return a meaningful GL_RENDERER string. 735 */ 736static const GLubyte * 737get_string( struct gl_context *ctx, GLenum name ) 738{ 739 (void) ctx; 740 switch (name) { 741 case GL_RENDERER: 742 return (const GLubyte *) "Mesa X11"; 743 case GL_VENDOR: 744 return NULL; 745 default: 746 return NULL; 747 } 748} 749 750 751/* 752 * We implement the glEnable function only because we care about 753 * dither enable/disable. 754 */ 755static void 756enable( struct gl_context *ctx, GLenum pname, GLboolean state ) 757{ 758 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 759 760 switch (pname) { 761 case GL_DITHER: 762 if (state) 763 xmesa->pixelformat = xmesa->xm_visual->dithered_pf; 764 else 765 xmesa->pixelformat = xmesa->xm_visual->undithered_pf; 766 break; 767 default: 768 ; /* silence compiler warning */ 769 } 770} 771 772 773static void 774clear_color_HPCR_ximage( struct gl_context *ctx, 775 const union gl_color_union color ) 776{ 777 int i; 778 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 779 780 UNCLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color.f[0]); 781 UNCLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color.f[1]); 782 UNCLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color.f[2]); 783 UNCLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color.f[3]); 784 785 if (color.f[0] == 0.0 && color.f[1] == 0.0 && color.f[2] == 0.0) { 786 /* black is black */ 787 memset( xmesa->xm_visual->hpcr_clear_ximage_pattern, 0x0 , 788 sizeof(xmesa->xm_visual->hpcr_clear_ximage_pattern)); 789 } 790 else { 791 /* build clear pattern */ 792 for (i=0; i<16; i++) { 793 xmesa->xm_visual->hpcr_clear_ximage_pattern[0][i] = 794 DITHER_HPCR(i, 0, 795 xmesa->clearcolor[0], 796 xmesa->clearcolor[1], 797 xmesa->clearcolor[2]); 798 xmesa->xm_visual->hpcr_clear_ximage_pattern[1][i] = 799 DITHER_HPCR(i, 1, 800 xmesa->clearcolor[0], 801 xmesa->clearcolor[1], 802 xmesa->clearcolor[2]); 803 } 804 } 805} 806 807 808static void 809clear_color_HPCR_pixmap( struct gl_context *ctx, 810 const union gl_color_union color ) 811{ 812 int i; 813 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 814 815 UNCLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color.f[0]); 816 UNCLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color.f[1]); 817 UNCLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color.f[2]); 818 UNCLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color.f[3]); 819 820 if (color.f[0] == 0.0 && color.f[1] == 0.0 && color.f[2] == 0.0) { 821 /* black is black */ 822 for (i=0; i<16; i++) { 823 XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 0, 0); 824 XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 1, 0); 825 } 826 } 827 else { 828 for (i=0; i<16; i++) { 829 XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 0, 830 DITHER_HPCR(i, 0, 831 xmesa->clearcolor[0], 832 xmesa->clearcolor[1], 833 xmesa->clearcolor[2])); 834 XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 1, 835 DITHER_HPCR(i, 1, 836 xmesa->clearcolor[0], 837 xmesa->clearcolor[1], 838 xmesa->clearcolor[2])); 839 } 840 } 841 /* change tile pixmap content */ 842 XMesaPutImage(xmesa->display, 843 (XMesaDrawable)xmesa->xm_visual->hpcr_clear_pixmap, 844 XMESA_BUFFER(ctx->DrawBuffer)->cleargc, 845 xmesa->xm_visual->hpcr_clear_ximage, 0, 0, 0, 0, 16, 2); 846} 847 848 849/** 850 * Called when the driver should update its state, based on the new_state 851 * flags. 852 */ 853void 854xmesa_update_state( struct gl_context *ctx, GLbitfield new_state ) 855{ 856 const XMesaContext xmesa = XMESA_CONTEXT(ctx); 857 858 /* Propagate statechange information to swrast and swrast_setup 859 * modules. The X11 driver has no internal GL-dependent state. 860 */ 861 _swrast_InvalidateState( ctx, new_state ); 862 _tnl_InvalidateState( ctx, new_state ); 863 _vbo_InvalidateState( ctx, new_state ); 864 _swsetup_InvalidateState( ctx, new_state ); 865 866 if (ctx->DrawBuffer->Name != 0) 867 return; 868 869 /* 870 * GL_DITHER, GL_READ/DRAW_BUFFER, buffer binding state, etc. effect 871 * renderbuffer span/clear funcs. 872 * Check _NEW_COLOR to detect dither enable/disable. 873 */ 874 if (new_state & (_NEW_COLOR | _NEW_BUFFERS)) { 875 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 876 struct xmesa_renderbuffer *front_xrb, *back_xrb; 877 878 front_xrb = xmbuf->frontxrb; 879 if (front_xrb) { 880 xmesa_set_renderbuffer_funcs(front_xrb, xmesa->pixelformat, 881 xmesa->xm_visual->BitsPerPixel); 882 front_xrb->clearFunc = clear_pixmap; 883 } 884 885 back_xrb = xmbuf->backxrb; 886 if (back_xrb) { 887 xmesa_set_renderbuffer_funcs(back_xrb, xmesa->pixelformat, 888 xmesa->xm_visual->BitsPerPixel); 889 if (xmbuf->backxrb->pixmap) { 890 back_xrb->clearFunc = clear_pixmap; 891 } 892 else { 893 switch (xmesa->xm_visual->BitsPerPixel) { 894 case 8: 895 if (xmesa->xm_visual->hpcr_clear_flag) { 896 back_xrb->clearFunc = clear_HPCR_ximage; 897 } 898 else { 899 back_xrb->clearFunc = clear_8bit_ximage; 900 } 901 break; 902 case 16: 903 back_xrb->clearFunc = clear_16bit_ximage; 904 break; 905 case 24: 906 back_xrb->clearFunc = clear_24bit_ximage; 907 break; 908 case 32: 909 back_xrb->clearFunc = clear_32bit_ximage; 910 break; 911 default: 912 back_xrb->clearFunc = clear_nbit_ximage; 913 break; 914 } 915 } 916 } 917 } 918 919 if (xmesa->xm_visual->hpcr_clear_flag) { 920 /* this depends on whether we're drawing to the front or back buffer */ 921 /* XXX FIX THIS! */ 922#if 0 923 if (pixmap) { 924 ctx->Driver.ClearColor = clear_color_HPCR_pixmap; 925 } 926 else { 927 ctx->Driver.ClearColor = clear_color_HPCR_ximage; 928 } 929#else 930 (void) clear_color_HPCR_pixmap; 931 (void) clear_color_HPCR_ximage; 932#endif 933 } 934} 935 936 937 938/** 939 * In SW, we don't really compress GL_COMPRESSED_RGB[A] textures! 940 */ 941static gl_format 942choose_tex_format( struct gl_context *ctx, GLint internalFormat, 943 GLenum format, GLenum type ) 944{ 945 switch (internalFormat) { 946 case GL_COMPRESSED_RGB_ARB: 947 return MESA_FORMAT_RGB888; 948 case GL_COMPRESSED_RGBA_ARB: 949 return MESA_FORMAT_RGBA8888; 950 default: 951 return _mesa_choose_tex_format(ctx, internalFormat, format, type); 952 } 953} 954 955 956/** 957 * Called by glViewport. 958 * This is a good time for us to poll the current X window size and adjust 959 * our renderbuffers to match the current window size. 960 * Remember, we have no opportunity to respond to conventional 961 * X Resize/StructureNotify events since the X driver has no event loop. 962 * Thus, we poll. 963 * Note that this trick isn't fool-proof. If the application never calls 964 * glViewport, our notion of the current window size may be incorrect. 965 * That problem led to the GLX_MESA_resize_buffers extension. 966 */ 967static void 968xmesa_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h) 969{ 970 XMesaContext xmctx = XMESA_CONTEXT(ctx); 971 XMesaBuffer xmdrawbuf = XMESA_BUFFER(ctx->WinSysDrawBuffer); 972 XMesaBuffer xmreadbuf = XMESA_BUFFER(ctx->WinSysReadBuffer); 973 xmesa_check_and_update_buffer_size(xmctx, xmdrawbuf); 974 xmesa_check_and_update_buffer_size(xmctx, xmreadbuf); 975 (void) x; 976 (void) y; 977 (void) w; 978 (void) h; 979} 980 981 982#if ENABLE_EXT_timer_query 983 984/* 985 * The GL_EXT_timer_query extension is not enabled for the XServer 986 * indirect renderer. Not sure about how/if wrapping of gettimeofday() 987 * is done, etc. 988 */ 989 990struct xmesa_query_object 991{ 992 struct gl_query_object Base; 993 struct timeval StartTime; 994}; 995 996 997static struct gl_query_object * 998xmesa_new_query_object(struct gl_context *ctx, GLuint id) 999{ 1000 struct xmesa_query_object *q = CALLOC_STRUCT(xmesa_query_object); 1001 if (q) { 1002 q->Base.Id = id; 1003 q->Base.Ready = GL_TRUE; 1004 } 1005 return &q->Base; 1006} 1007 1008 1009static void 1010xmesa_begin_query(struct gl_context *ctx, struct gl_query_object *q) 1011{ 1012 if (q->Target == GL_TIME_ELAPSED_EXT) { 1013 struct xmesa_query_object *xq = (struct xmesa_query_object *) q; 1014 (void) gettimeofday(&xq->StartTime, NULL); 1015 } 1016} 1017 1018 1019/** 1020 * Return the difference between the two given times in microseconds. 1021 */ 1022#ifdef __VMS 1023#define suseconds_t unsigned int 1024#endif 1025static GLuint64EXT 1026time_diff(const struct timeval *t0, const struct timeval *t1) 1027{ 1028 GLuint64EXT seconds0 = t0->tv_sec & 0xff; /* 0 .. 255 seconds */ 1029 GLuint64EXT seconds1 = t1->tv_sec & 0xff; /* 0 .. 255 seconds */ 1030 GLuint64EXT nanosec0 = (seconds0 * 1000000 + t0->tv_usec) * 1000; 1031 GLuint64EXT nanosec1 = (seconds1 * 1000000 + t1->tv_usec) * 1000; 1032 return nanosec1 - nanosec0; 1033} 1034 1035 1036static void 1037xmesa_end_query(struct gl_context *ctx, struct gl_query_object *q) 1038{ 1039 if (q->Target == GL_TIME_ELAPSED_EXT) { 1040 struct xmesa_query_object *xq = (struct xmesa_query_object *) q; 1041 struct timeval endTime; 1042 (void) gettimeofday(&endTime, NULL); 1043 /* result is in nanoseconds! */ 1044 q->Result = time_diff(&xq->StartTime, &endTime); 1045 } 1046 q->Ready = GL_TRUE; 1047} 1048 1049#endif /* ENABLE_timer_query */ 1050 1051 1052/** 1053 * Initialize the device driver function table with the functions 1054 * we implement in this driver. 1055 */ 1056void 1057xmesa_init_driver_functions( XMesaVisual xmvisual, 1058 struct dd_function_table *driver ) 1059{ 1060 driver->GetString = get_string; 1061 driver->UpdateState = xmesa_update_state; 1062 driver->GetBufferSize = NULL; /* OBSOLETE */ 1063 driver->Flush = finish_or_flush; 1064 driver->Finish = finish_or_flush; 1065 driver->ClearColor = clear_color; 1066 driver->ColorMask = color_mask; 1067 driver->Enable = enable; 1068 driver->Viewport = xmesa_viewport; 1069 if (TEST_META_FUNCS) { 1070 driver->Clear = _mesa_meta_Clear; 1071 driver->CopyPixels = _mesa_meta_CopyPixels; 1072 driver->BlitFramebuffer = _mesa_meta_BlitFramebuffer; 1073 driver->DrawPixels = _mesa_meta_DrawPixels; 1074 driver->Bitmap = _mesa_meta_Bitmap; 1075 } 1076 else { 1077 driver->Clear = clear_buffers; 1078 driver->CopyPixels = xmesa_CopyPixels; 1079 if (xmvisual->undithered_pf == PF_8R8G8B && 1080 xmvisual->dithered_pf == PF_8R8G8B && 1081 xmvisual->BitsPerPixel == 32) { 1082 driver->DrawPixels = xmesa_DrawPixels_8R8G8B; 1083 } 1084 else if (xmvisual->undithered_pf == PF_5R6G5B) { 1085 driver->DrawPixels = xmesa_DrawPixels_5R6G5B; 1086 } 1087 } 1088 1089#if ENABLE_EXT_texure_compression_s3tc 1090 driver->ChooseTextureFormat = choose_tex_format; 1091#else 1092 (void) choose_tex_format; 1093#endif 1094 1095#if ENABLE_EXT_timer_query 1096 driver->NewQueryObject = xmesa_new_query_object; 1097 driver->BeginQuery = xmesa_begin_query; 1098 driver->EndQuery = xmesa_end_query; 1099#endif 1100} 1101 1102 1103#define XMESA_NEW_POINT (_NEW_POINT | \ 1104 _NEW_RENDERMODE | \ 1105 _SWRAST_NEW_RASTERMASK) 1106 1107#define XMESA_NEW_LINE (_NEW_LINE | \ 1108 _NEW_TEXTURE | \ 1109 _NEW_LIGHT | \ 1110 _NEW_DEPTH | \ 1111 _NEW_RENDERMODE | \ 1112 _SWRAST_NEW_RASTERMASK) 1113 1114#define XMESA_NEW_TRIANGLE (_NEW_POLYGON | \ 1115 _NEW_TEXTURE | \ 1116 _NEW_LIGHT | \ 1117 _NEW_DEPTH | \ 1118 _NEW_RENDERMODE | \ 1119 _SWRAST_NEW_RASTERMASK) 1120 1121 1122/** 1123 * Extend the software rasterizer with our line/point/triangle 1124 * functions. 1125 * Called during context creation only. 1126 */ 1127void xmesa_register_swrast_functions( struct gl_context *ctx ) 1128{ 1129 SWcontext *swrast = SWRAST_CONTEXT( ctx ); 1130 1131 swrast->choose_point = xmesa_choose_point; 1132 swrast->choose_line = xmesa_choose_line; 1133 swrast->choose_triangle = xmesa_choose_triangle; 1134 1135 /* XXX these lines have no net effect. Remove??? */ 1136 swrast->InvalidatePointMask |= XMESA_NEW_POINT; 1137 swrast->InvalidateLineMask |= XMESA_NEW_LINE; 1138 swrast->InvalidateTriangleMask |= XMESA_NEW_TRIANGLE; 1139} 1140