projects / mesa.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
history | raw | HEAD
drivers/x11: unifdef XFree86Server
[mesa.git] / src / mesa / drivers / x11 / xm_dd.c
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/state.h"
45 #include "main/texobj.h"
46 #include "main/teximage.h"
47 #include "main/texstore.h"
48 #include "main/texformat.h"
49 #include "swrast/swrast.h"
50 #include "swrast/s_context.h"
51 #include "swrast_setup/swrast_setup.h"
52 #include "tnl/tnl.h"
53 #include "tnl/t_context.h"
54 #include "drivers/common/meta.h"
55 #include "xmesaP.h"
56
57
58
59 /*
60 * Dithering kernels and lookup tables.
61 */
62
63 const int xmesa_kernel8[DITH_DY * DITH_DX] = {
64 0 * MAXC, 8 * MAXC, 2 * MAXC, 10 * MAXC,
65 12 * MAXC, 4 * MAXC, 14 * MAXC, 6 * MAXC,
66 3 * MAXC, 11 * MAXC, 1 * MAXC, 9 * MAXC,
67 15 * MAXC, 7 * MAXC, 13 * MAXC, 5 * MAXC,
68 };
69
70 const short xmesa_HPCR_DRGB[3][2][16] = {
71 {
72 { 16, -4, 1,-11, 14, -6, 3, -9, 15, -5, 2,-10, 13, -7, 4, -8},
73 {-15, 5, 0, 12,-13, 7, -2, 10,-14, 6, -1, 11,-12, 8, -3, 9}
74 },
75 {
76 {-11, 15, -7, 3, -8, 14, -4, 2,-10, 16, -6, 4, -9, 13, -5, 1},
77 { 12,-14, 8, -2, 9,-13, 5, -1, 11,-15, 7, -3, 10,-12, 6, 0}
78 },
79 {
80 { 6,-18, 26,-14, 2,-22, 30,-10, 8,-16, 28,-12, 4,-20, 32, -8},
81 { -4, 20,-24, 16, 0, 24,-28, 12, -6, 18,-26, 14, -2, 22,-30, 10}
82 }
83 };
84
85 const int xmesa_kernel1[16] = {
86 0*47, 9*47, 4*47, 12*47, /* 47 = (255*3)/16 */
87 6*47, 2*47, 14*47, 8*47,
88 10*47, 1*47, 5*47, 11*47,
89 7*47, 13*47, 3*47, 15*47
90 };
91
92
93 static void
94 finish_or_flush( struct gl_context *ctx )
95 {
96 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
97 if (xmesa) {
98 _glthread_LOCK_MUTEX(_xmesa_lock);
99 XSync( xmesa->display, False );
100 _glthread_UNLOCK_MUTEX(_xmesa_lock);
101 }
102 }
103
104
105 static void
106 clear_color( struct gl_context *ctx, const GLfloat color[4] )
107 {
108 if (ctx->DrawBuffer->Name == 0) {
109 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
110 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
111
112 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]);
113 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]);
114 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]);
115 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]);
116 xmesa->clearpixel = xmesa_color_to_pixel( ctx,
117 xmesa->clearcolor[0],
118 xmesa->clearcolor[1],
119 xmesa->clearcolor[2],
120 xmesa->clearcolor[3],
121 xmesa->xm_visual->undithered_pf );
122 _glthread_LOCK_MUTEX(_xmesa_lock);
123 XMesaSetForeground( xmesa->display, xmbuf->cleargc,
124 xmesa->clearpixel );
125 _glthread_UNLOCK_MUTEX(_xmesa_lock);
126 }
127 }
128
129
130
131 /* Implements glColorMask() */
132 static void
133 color_mask(struct gl_context *ctx,
134 GLboolean rmask, GLboolean gmask, GLboolean bmask, GLboolean amask)
135 {
136 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
137 XMesaBuffer xmbuf;
138 const int xclass = xmesa->xm_visual->visualType;
139 (void) amask;
140
141 if (ctx->DrawBuffer->Name != 0)
142 return;
143
144 xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
145
146 if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) {
147 unsigned long m;
148 if (rmask && gmask && bmask) {
149 m = ((unsigned long)~0L);
150 }
151 else {
152 m = 0;
153 if (rmask) m |= GET_REDMASK(xmesa->xm_visual);
154 if (gmask) m |= GET_GREENMASK(xmesa->xm_visual);
155 if (bmask) m |= GET_BLUEMASK(xmesa->xm_visual);
156 }
157 XMesaSetPlaneMask( xmesa->display, xmbuf->cleargc, m );
158 }
159 }
160
161
162
163 /**********************************************************************/
164 /*** glClear implementations ***/
165 /**********************************************************************/
166
167
168 /**
169 * Clear the front or back color buffer, if it's implemented with a pixmap.
170 */
171 static void
172 clear_pixmap(struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
173 GLint x, GLint y, GLint width, GLint height)
174 {
175 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
176 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
177
178 assert(xmbuf);
179 assert(xrb->pixmap);
180 assert(xmesa);
181 assert(xmesa->display);
182 assert(xrb->pixmap);
183 assert(xmbuf->cleargc);
184
185 XMesaFillRectangle( xmesa->display, xrb->pixmap, xmbuf->cleargc,
186 x, xrb->Base.Height - y - height,
187 width, height );
188 }
189
190
191 static void
192 clear_8bit_ximage( struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
193 GLint x, GLint y, GLint width, GLint height )
194 {
195 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
196 GLint i;
197 for (i = 0; i < height; i++) {
198 GLubyte *ptr = PIXEL_ADDR1(xrb, x, y + i);
199 memset( ptr, xmesa->clearpixel, width );
200 }
201 }
202
203
204 static void
205 clear_HPCR_ximage( struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
206 GLint x, GLint y, GLint width, GLint height )
207 {
208 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
209 GLint i;
210 for (i = y; i < y + height; i++) {
211 GLubyte *ptr = PIXEL_ADDR1( xrb, x, i );
212 int j;
213 const GLubyte *sptr = xmesa->xm_visual->hpcr_clear_ximage_pattern[0];
214 if (i & 1) {
215 sptr += 16;
216 }
217 for (j = x; j < x + width; j++) {
218 *ptr = sptr[j&15];
219 ptr++;
220 }
221 }
222 }
223
224
225 static void
226 clear_16bit_ximage( struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
227 GLint x, GLint y, GLint width, GLint height)
228 {
229 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
230 GLuint pixel = (GLuint) xmesa->clearpixel;
231 GLint i, j;
232
233 if (xmesa->swapbytes) {
234 pixel = ((pixel >> 8) & 0x00ff) | ((pixel << 8) & 0xff00);
235 }
236
237 for (j = 0; j < height; j++) {
238 GLushort *ptr2 = PIXEL_ADDR2(xrb, x, y + j);
239 for (i = 0; i < width; i++) {
240 ptr2[i] = pixel;
241 }
242 }
243 }
244
245
246 /* Optimized code provided by Nozomi Ytow <noz@xfree86.org> */
247 static void
248 clear_24bit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
249 GLint x, GLint y, GLint width, GLint height)
250 {
251 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
252 const GLubyte r = xmesa->clearcolor[0];
253 const GLubyte g = xmesa->clearcolor[1];
254 const GLubyte b = xmesa->clearcolor[2];
255
256 if (r == g && g == b) {
257 /* same value for all three components (gray) */
258 GLint j;
259 for (j = 0; j < height; j++) {
260 bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j);
261 memset(ptr3, r, 3 * width);
262 }
263 }
264 else {
265 /* non-gray clear color */
266 GLint i, j;
267 for (j = 0; j < height; j++) {
268 bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j);
269 for (i = 0; i < width; i++) {
270 ptr3->r = r;
271 ptr3->g = g;
272 ptr3->b = b;
273 ptr3++;
274 }
275 }
276 }
277 }
278
279
280 static void
281 clear_32bit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
282 GLint x, GLint y, GLint width, GLint height)
283 {
284 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
285 register GLuint pixel = (GLuint) xmesa->clearpixel;
286
287 if (!xrb->ximage)
288 return;
289
290 if (xmesa->swapbytes) {
291 pixel = ((pixel >> 24) & 0x000000ff)
292 | ((pixel >> 8) & 0x0000ff00)
293 | ((pixel << 8) & 0x00ff0000)
294 | ((pixel << 24) & 0xff000000);
295 }
296
297 if (width == xrb->Base.Width && height == xrb->Base.Height) {
298 /* clearing whole buffer */
299 const GLuint n = xrb->Base.Width * xrb->Base.Height;
300 GLuint *ptr4 = (GLuint *) xrb->ximage->data;
301 if (pixel == 0) {
302 /* common case */
303 memset(ptr4, pixel, 4 * n);
304 }
305 else {
306 GLuint i;
307 for (i = 0; i < n; i++)
308 ptr4[i] = pixel;
309 }
310 }
311 else {
312 /* clearing scissored region */
313 GLint i, j;
314 for (j = 0; j < height; j++) {
315 GLuint *ptr4 = PIXEL_ADDR4(xrb, x, y + j);
316 for (i = 0; i < width; i++) {
317 ptr4[i] = pixel;
318 }
319 }
320 }
321 }
322
323
324 static void
325 clear_nbit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
326 GLint x, GLint y, GLint width, GLint height)
327 {
328 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
329 XMesaImage *img = xrb->ximage;
330 GLint i, j;
331
332 /* TODO: optimize this */
333 y = YFLIP(xrb, y);
334 for (j = 0; j < height; j++) {
335 for (i = 0; i < width; i++) {
336 XMesaPutPixel(img, x+i, y-j, xmesa->clearpixel);
337 }
338 }
339 }
340
341
342
343 static void
344 clear_buffers(struct gl_context *ctx, GLbitfield buffers)
345 {
346 if (ctx->DrawBuffer->Name == 0) {
347 /* this is a window system framebuffer */
348 const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask[0];
349 XMesaBuffer b = XMESA_BUFFER(ctx->DrawBuffer);
350 const GLint x = ctx->DrawBuffer->_Xmin;
351 const GLint y = ctx->DrawBuffer->_Ymin;
352 const GLint width = ctx->DrawBuffer->_Xmax - x;
353 const GLint height = ctx->DrawBuffer->_Ymax - y;
354
355 /* we can't handle color or index masking */
356 if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) {
357 if (buffers & BUFFER_BIT_FRONT_LEFT) {
358 /* clear front color buffer */
359 struct gl_renderbuffer *frontRb
360 = ctx->DrawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
361 if (b->frontxrb == xmesa_renderbuffer(frontRb)) {
362 /* renderbuffer is not wrapped - great! */
363 b->frontxrb->clearFunc(ctx, b->frontxrb, x, y, width, height);
364 buffers &= ~BUFFER_BIT_FRONT_LEFT;
365 }
366 else {
367 /* we can't directly clear an alpha-wrapped color buffer */
368 }
369 }
370 if (buffers & BUFFER_BIT_BACK_LEFT) {
371 /* clear back color buffer */
372 struct gl_renderbuffer *backRb
373 = ctx->DrawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer;
374 if (b->backxrb == xmesa_renderbuffer(backRb)) {
375 /* renderbuffer is not wrapped - great! */
376 b->backxrb->clearFunc(ctx, b->backxrb, x, y, width, height);
377 buffers &= ~BUFFER_BIT_BACK_LEFT;
378 }
379 }
380 }
381 }
382 if (buffers)
383 _swrast_Clear(ctx, buffers);
384 }
385
386
387 /* XXX these functions haven't been tested in the Xserver environment */
388
389
390 /**
391 * Check if we can do an optimized glDrawPixels into an 8R8G8B visual.
392 */
393 static GLboolean
394 can_do_DrawPixels_8R8G8B(struct gl_context *ctx, GLenum format, GLenum type)
395 {
396 if (format == GL_BGRA &&
397 type == GL_UNSIGNED_BYTE &&
398 ctx->DrawBuffer &&
399 ctx->DrawBuffer->Name == 0 &&
400 ctx->Pixel.ZoomX == 1.0 && /* no zooming */
401 ctx->Pixel.ZoomY == 1.0 &&
402 ctx->_ImageTransferState == 0 /* no color tables, scale/bias, etc */) {
403 const SWcontext *swrast = SWRAST_CONTEXT(ctx);
404
405 if (swrast->NewState)
406 _swrast_validate_derived( ctx );
407
408 if ((swrast->_RasterMask & ~CLIP_BIT) == 0) /* no blend, z-test, etc */ {
409 struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
410 if (rb) {
411 struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb->Wrapped);
412 if (xrb &&
413 xrb->pixmap && /* drawing to pixmap or window */
414 _mesa_get_format_bits(xrb->Base.Format, GL_ALPHA_BITS) == 0) {
415 return GL_TRUE;
416 }
417 }
418 }
419 }
420 return GL_FALSE;
421 }
422
423
424 /**
425 * This function implements glDrawPixels() with an XPutImage call when
426 * drawing to the front buffer (X Window drawable).
427 * The image format must be GL_BGRA to match the PF_8R8G8B pixel format.
428 */
429 static void
430 xmesa_DrawPixels_8R8G8B( struct gl_context *ctx,
431 GLint x, GLint y, GLsizei width, GLsizei height,
432 GLenum format, GLenum type,
433 const struct gl_pixelstore_attrib *unpack,
434 const GLvoid *pixels )
435 {
436 if (can_do_DrawPixels_8R8G8B(ctx, format, type)) {
437 const SWcontext *swrast = SWRAST_CONTEXT( ctx );
438 struct gl_pixelstore_attrib clippedUnpack = *unpack;
439 int dstX = x;
440 int dstY = y;
441 int w = width;
442 int h = height;
443
444 if (swrast->NewState)
445 _swrast_validate_derived( ctx );
446
447 if (unpack->BufferObj->Name) {
448 /* unpack from PBO */
449 GLubyte *buf;
450 if (!_mesa_validate_pbo_access(2, unpack, width, height, 1,
451 format, type, pixels)) {
452 _mesa_error(ctx, GL_INVALID_OPERATION,
453 "glDrawPixels(invalid PBO access)");
454 return;
455 }
456 buf = (GLubyte *) ctx->Driver.MapBuffer(ctx,
457 GL_PIXEL_UNPACK_BUFFER_EXT,
458 GL_READ_ONLY_ARB,
459 unpack->BufferObj);
460 if (!buf) {
461 /* buffer is already mapped - that's an error */
462 _mesa_error(ctx, GL_INVALID_OPERATION,
463 "glDrawPixels(PBO is mapped)");
464 return;
465 }
466 pixels = ADD_POINTERS(buf, pixels);
467 }
468
469 if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) {
470 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
471 XMesaDisplay *dpy = xmesa->xm_visual->display;
472 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
473 const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */
474 struct xmesa_renderbuffer *xrb
475 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped);
476 const int srcX = clippedUnpack.SkipPixels;
477 const int srcY = clippedUnpack.SkipRows;
478 const int rowLength = clippedUnpack.RowLength;
479 XMesaImage ximage;
480
481 ASSERT(xmesa->xm_visual->dithered_pf == PF_8R8G8B);
482 ASSERT(xmesa->xm_visual->undithered_pf == PF_8R8G8B);
483 ASSERT(dpy);
484 ASSERT(gc);
485
486 /* This is a little tricky since all coordinates up to now have
487 * been in the OpenGL bottom-to-top orientation. X is top-to-bottom
488 * so we have to carefully compute the Y coordinates/addresses here.
489 */
490 memset(&ximage, 0, sizeof(XMesaImage));
491 ximage.width = width;
492 ximage.height = height;
493 ximage.format = ZPixmap;
494 ximage.data = (char *) pixels
495 + ((srcY + h - 1) * rowLength + srcX) * 4;
496 ximage.byte_order = LSBFirst;
497 ximage.bitmap_unit = 32;
498 ximage.bitmap_bit_order = LSBFirst;
499 ximage.bitmap_pad = 32;
500 ximage.depth = 32;
501 ximage.bits_per_pixel = 32;
502 ximage.bytes_per_line = -rowLength * 4; /* negative to flip image */
503 /* it seems we don't need to set the ximage.red/green/blue_mask fields */
504 /* flip Y axis for dest position */
505 dstY = YFLIP(xrb, dstY) - h + 1;
506 XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h);
507 }
508
509 if (unpack->BufferObj->Name) {
510 ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
511 unpack->BufferObj);
512 }
513 }
514 else {
515 /* software fallback */
516 _swrast_DrawPixels(ctx, x, y, width, height,
517 format, type, unpack, pixels);
518 }
519 }
520
521
522
523 /**
524 * Check if we can do an optimized glDrawPixels into an 5R6G5B visual.
525 */
526 static GLboolean
527 can_do_DrawPixels_5R6G5B(struct gl_context *ctx, GLenum format, GLenum type)
528 {
529 if (format == GL_RGB &&
530 type == GL_UNSIGNED_SHORT_5_6_5 &&
531 !ctx->Color.DitherFlag && /* no dithering */
532 ctx->DrawBuffer &&
533 ctx->DrawBuffer->Name == 0 &&
534 ctx->Pixel.ZoomX == 1.0 && /* no zooming */
535 ctx->Pixel.ZoomY == 1.0 &&
536 ctx->_ImageTransferState == 0 /* no color tables, scale/bias, etc */) {
537 const SWcontext *swrast = SWRAST_CONTEXT(ctx);
538
539 if (swrast->NewState)
540 _swrast_validate_derived( ctx );
541
542 if ((swrast->_RasterMask & ~CLIP_BIT) == 0) /* no blend, z-test, etc */ {
543 struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
544 if (rb) {
545 struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb->Wrapped);
546 if (xrb &&
547 xrb->pixmap && /* drawing to pixmap or window */
548 _mesa_get_format_bits(xrb->Base.Format, GL_ALPHA_BITS) == 0) {
549 return GL_TRUE;
550 }
551 }
552 }
553 }
554 return GL_FALSE;
555 }
556
557
558 /**
559 * This function implements glDrawPixels() with an XPutImage call when
560 * drawing to the front buffer (X Window drawable). The image format
561 * must be GL_RGB and image type must be GL_UNSIGNED_SHORT_5_6_5 to
562 * match the PF_5R6G5B pixel format.
563 */
564 static void
565 xmesa_DrawPixels_5R6G5B( struct gl_context *ctx,
566 GLint x, GLint y, GLsizei width, GLsizei height,
567 GLenum format, GLenum type,
568 const struct gl_pixelstore_attrib *unpack,
569 const GLvoid *pixels )
570 {
571 if (can_do_DrawPixels_5R6G5B(ctx, format, type)) {
572 const SWcontext *swrast = SWRAST_CONTEXT( ctx );
573 struct gl_pixelstore_attrib clippedUnpack = *unpack;
574 int dstX = x;
575 int dstY = y;
576 int w = width;
577 int h = height;
578
579 if (swrast->NewState)
580 _swrast_validate_derived( ctx );
581
582 if (unpack->BufferObj->Name) {
583 /* unpack from PBO */
584 GLubyte *buf;
585 if (!_mesa_validate_pbo_access(2, unpack, width, height, 1,
586 format, type, pixels)) {
587 _mesa_error(ctx, GL_INVALID_OPERATION,
588 "glDrawPixels(invalid PBO access)");
589 return;
590 }
591 buf = (GLubyte *) ctx->Driver.MapBuffer(ctx,
592 GL_PIXEL_UNPACK_BUFFER_EXT,
593 GL_READ_ONLY_ARB,
594 unpack->BufferObj);
595 if (!buf) {
596 /* buffer is already mapped - that's an error */
597 _mesa_error(ctx, GL_INVALID_OPERATION,
598 "glDrawPixels(PBO is mapped)");
599 return;
600 }
601 pixels = ADD_POINTERS(buf, pixels);
602 }
603
604 if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) {
605 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
606 XMesaDisplay *dpy = xmesa->xm_visual->display;
607 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
608 const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */
609 struct xmesa_renderbuffer *xrb
610 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped);
611 const int srcX = clippedUnpack.SkipPixels;
612 const int srcY = clippedUnpack.SkipRows;
613 const int rowLength = clippedUnpack.RowLength;
614 XMesaImage ximage;
615
616 ASSERT(xmesa->xm_visual->undithered_pf == PF_5R6G5B);
617 ASSERT(dpy);
618 ASSERT(gc);
619
620 /* This is a little tricky since all coordinates up to now have
621 * been in the OpenGL bottom-to-top orientation. X is top-to-bottom
622 * so we have to carefully compute the Y coordinates/addresses here.
623 */
624 memset(&ximage, 0, sizeof(XMesaImage));
625 ximage.width = width;
626 ximage.height = height;
627 ximage.format = ZPixmap;
628 ximage.data = (char *) pixels
629 + ((srcY + h - 1) * rowLength + srcX) * 2;
630 ximage.byte_order = LSBFirst;
631 ximage.bitmap_unit = 16;
632 ximage.bitmap_bit_order = LSBFirst;
633 ximage.bitmap_pad = 16;
634 ximage.depth = 16;
635 ximage.bits_per_pixel = 16;
636 ximage.bytes_per_line = -rowLength * 2; /* negative to flip image */
637 /* it seems we don't need to set the ximage.red/green/blue_mask fields */
638 /* flip Y axis for dest position */
639 dstY = YFLIP(xrb, dstY) - h + 1;
640 XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h);
641 }
642
643 if (unpack->BufferObj->Name) {
644 ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
645 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 */
659 static GLboolean
660 can_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 */
698 static void
699 xmesa_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 */
736 static const GLubyte *
737 get_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 */
755 static void
756 enable( 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
773 static void
774 clear_color_HPCR_ximage( struct gl_context *ctx, const GLfloat color[4] )
775 {
776 int i;
777 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
778
779 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]);
780 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]);
781 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]);
782 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]);
783
784 if (color[0] == 0.0 && color[1] == 0.0 && color[2] == 0.0) {
785 /* black is black */
786 memset( xmesa->xm_visual->hpcr_clear_ximage_pattern, 0x0 ,
787 sizeof(xmesa->xm_visual->hpcr_clear_ximage_pattern));
788 }
789 else {
790 /* build clear pattern */
791 for (i=0; i<16; i++) {
792 xmesa->xm_visual->hpcr_clear_ximage_pattern[0][i] =
793 DITHER_HPCR(i, 0,
794 xmesa->clearcolor[0],
795 xmesa->clearcolor[1],
796 xmesa->clearcolor[2]);
797 xmesa->xm_visual->hpcr_clear_ximage_pattern[1][i] =
798 DITHER_HPCR(i, 1,
799 xmesa->clearcolor[0],
800 xmesa->clearcolor[1],
801 xmesa->clearcolor[2]);
802 }
803 }
804 }
805
806
807 static void
808 clear_color_HPCR_pixmap( struct gl_context *ctx, const GLfloat color[4] )
809 {
810 int i;
811 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
812
813 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]);
814 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]);
815 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]);
816 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]);
817
818 if (color[0] == 0.0 && color[1] == 0.0 && color[2] == 0.0) {
819 /* black is black */
820 for (i=0; i<16; i++) {
821 XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 0, 0);
822 XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 1, 0);
823 }
824 }
825 else {
826 for (i=0; i<16; i++) {
827 XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 0,
828 DITHER_HPCR(i, 0,
829 xmesa->clearcolor[0],
830 xmesa->clearcolor[1],
831 xmesa->clearcolor[2]));
832 XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 1,
833 DITHER_HPCR(i, 1,
834 xmesa->clearcolor[0],
835 xmesa->clearcolor[1],
836 xmesa->clearcolor[2]));
837 }
838 }
839 /* change tile pixmap content */
840 XMesaPutImage(xmesa->display,
841 (XMesaDrawable)xmesa->xm_visual->hpcr_clear_pixmap,
842 XMESA_BUFFER(ctx->DrawBuffer)->cleargc,
843 xmesa->xm_visual->hpcr_clear_ximage, 0, 0, 0, 0, 16, 2);
844 }
845
846
847 /**
848 * Called when the driver should update its state, based on the new_state
849 * flags.
850 */
851 void
852 xmesa_update_state( struct gl_context *ctx, GLbitfield new_state )
853 {
854 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
855
856 /* Propagate statechange information to swrast and swrast_setup
857 * modules. The X11 driver has no internal GL-dependent state.
858 */
859 _swrast_InvalidateState( ctx, new_state );
860 _tnl_InvalidateState( ctx, new_state );
861 _vbo_InvalidateState( ctx, new_state );
862 _swsetup_InvalidateState( ctx, new_state );
863
864 if (ctx->DrawBuffer->Name != 0)
865 return;
866
867 /*
868 * GL_DITHER, GL_READ/DRAW_BUFFER, buffer binding state, etc. effect
869 * renderbuffer span/clear funcs.
870 * Check _NEW_COLOR to detect dither enable/disable.
871 */
872 if (new_state & (_NEW_COLOR | _NEW_BUFFERS)) {
873 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
874 struct xmesa_renderbuffer *front_xrb, *back_xrb;
875
876 front_xrb = xmbuf->frontxrb;
877 if (front_xrb) {
878 xmesa_set_renderbuffer_funcs(front_xrb, xmesa->pixelformat,
879 xmesa->xm_visual->BitsPerPixel);
880 front_xrb->clearFunc = clear_pixmap;
881 }
882
883 back_xrb = xmbuf->backxrb;
884 if (back_xrb) {
885 xmesa_set_renderbuffer_funcs(back_xrb, xmesa->pixelformat,
886 xmesa->xm_visual->BitsPerPixel);
887 if (xmbuf->backxrb->pixmap) {
888 back_xrb->clearFunc = clear_pixmap;
889 }
890 else {
891 switch (xmesa->xm_visual->BitsPerPixel) {
892 case 8:
893 if (xmesa->xm_visual->hpcr_clear_flag) {
894 back_xrb->clearFunc = clear_HPCR_ximage;
895 }
896 else {
897 back_xrb->clearFunc = clear_8bit_ximage;
898 }
899 break;
900 case 16:
901 back_xrb->clearFunc = clear_16bit_ximage;
902 break;
903 case 24:
904 back_xrb->clearFunc = clear_24bit_ximage;
905 break;
906 case 32:
907 back_xrb->clearFunc = clear_32bit_ximage;
908 break;
909 default:
910 back_xrb->clearFunc = clear_nbit_ximage;
911 break;
912 }
913 }
914 }
915 }
916
917 if (xmesa->xm_visual->hpcr_clear_flag) {
918 /* this depends on whether we're drawing to the front or back buffer */
919 /* XXX FIX THIS! */
920 #if 0
921 if (pixmap) {
922 ctx->Driver.ClearColor = clear_color_HPCR_pixmap;
923 }
924 else {
925 ctx->Driver.ClearColor = clear_color_HPCR_ximage;
926 }
927 #else
928 (void) clear_color_HPCR_pixmap;
929 (void) clear_color_HPCR_ximage;
930 #endif
931 }
932 }
933
934
935
936 /**
937 * In SW, we don't really compress GL_COMPRESSED_RGB[A] textures!
938 */
939 static gl_format
940 choose_tex_format( struct gl_context *ctx, GLint internalFormat,
941 GLenum format, GLenum type )
942 {
943 switch (internalFormat) {
944 case GL_COMPRESSED_RGB_ARB:
945 return MESA_FORMAT_RGB888;
946 case GL_COMPRESSED_RGBA_ARB:
947 return MESA_FORMAT_RGBA8888;
948 default:
949 return _mesa_choose_tex_format(ctx, internalFormat, format, type);
950 }
951 }
952
953
954 /**
955 * Called by glViewport.
956 * This is a good time for us to poll the current X window size and adjust
957 * our renderbuffers to match the current window size.
958 * Remember, we have no opportunity to respond to conventional
959 * X Resize/StructureNotify events since the X driver has no event loop.
960 * Thus, we poll.
961 * Note that this trick isn't fool-proof. If the application never calls
962 * glViewport, our notion of the current window size may be incorrect.
963 * That problem led to the GLX_MESA_resize_buffers extension.
964 */
965 static void
966 xmesa_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
967 {
968 XMesaContext xmctx = XMESA_CONTEXT(ctx);
969 XMesaBuffer xmdrawbuf = XMESA_BUFFER(ctx->WinSysDrawBuffer);
970 XMesaBuffer xmreadbuf = XMESA_BUFFER(ctx->WinSysReadBuffer);
971 xmesa_check_and_update_buffer_size(xmctx, xmdrawbuf);
972 xmesa_check_and_update_buffer_size(xmctx, xmreadbuf);
973 (void) x;
974 (void) y;
975 (void) w;
976 (void) h;
977 }
978
979
980 #if ENABLE_EXT_timer_query
981
982 /*
983 * The GL_EXT_timer_query extension is not enabled for the XServer
984 * indirect renderer. Not sure about how/if wrapping of gettimeofday()
985 * is done, etc.
986 */
987
988 struct xmesa_query_object
989 {
990 struct gl_query_object Base;
991 struct timeval StartTime;
992 };
993
994
995 static struct gl_query_object *
996 xmesa_new_query_object(struct gl_context *ctx, GLuint id)
997 {
998 struct xmesa_query_object *q = CALLOC_STRUCT(xmesa_query_object);
999 if (q) {
1000 q->Base.Id = id;
1001 q->Base.Ready = GL_TRUE;
1002 }
1003 return &q->Base;
1004 }
1005
1006
1007 static void
1008 xmesa_begin_query(struct gl_context *ctx, struct gl_query_object *q)
1009 {
1010 if (q->Target == GL_TIME_ELAPSED_EXT) {
1011 struct xmesa_query_object *xq = (struct xmesa_query_object *) q;
1012 (void) gettimeofday(&xq->StartTime, NULL);
1013 }
1014 }
1015
1016
1017 /**
1018 * Return the difference between the two given times in microseconds.
1019 */
1020 #ifdef __VMS
1021 #define suseconds_t unsigned int
1022 #endif
1023 static GLuint64EXT
1024 time_diff(const struct timeval *t0, const struct timeval *t1)
1025 {
1026 GLuint64EXT seconds0 = t0->tv_sec & 0xff; /* 0 .. 255 seconds */
1027 GLuint64EXT seconds1 = t1->tv_sec & 0xff; /* 0 .. 255 seconds */
1028 GLuint64EXT nanosec0 = (seconds0 * 1000000 + t0->tv_usec) * 1000;
1029 GLuint64EXT nanosec1 = (seconds1 * 1000000 + t1->tv_usec) * 1000;
1030 return nanosec1 - nanosec0;
1031 }
1032
1033
1034 static void
1035 xmesa_end_query(struct gl_context *ctx, struct gl_query_object *q)
1036 {
1037 if (q->Target == GL_TIME_ELAPSED_EXT) {
1038 struct xmesa_query_object *xq = (struct xmesa_query_object *) q;
1039 struct timeval endTime;
1040 (void) gettimeofday(&endTime, NULL);
1041 /* result is in nanoseconds! */
1042 q->Result = time_diff(&xq->StartTime, &endTime);
1043 }
1044 q->Ready = GL_TRUE;
1045 }
1046
1047 #endif /* ENABLE_timer_query */
1048
1049
1050 /**
1051 * Initialize the device driver function table with the functions
1052 * we implement in this driver.
1053 */
1054 void
1055 xmesa_init_driver_functions( XMesaVisual xmvisual,
1056 struct dd_function_table *driver )
1057 {
1058 driver->GetString = get_string;
1059 driver->UpdateState = xmesa_update_state;
1060 driver->GetBufferSize = NULL; /* OBSOLETE */
1061 driver->Flush = finish_or_flush;
1062 driver->Finish = finish_or_flush;
1063 driver->ClearColor = clear_color;
1064 driver->ColorMask = color_mask;
1065 driver->Enable = enable;
1066 driver->Viewport = xmesa_viewport;
1067 if (TEST_META_FUNCS) {
1068 driver->Clear = _mesa_meta_Clear;
1069 driver->CopyPixels = _mesa_meta_CopyPixels;
1070 driver->BlitFramebuffer = _mesa_meta_BlitFramebuffer;
1071 driver->DrawPixels = _mesa_meta_DrawPixels;
1072 driver->Bitmap = _mesa_meta_Bitmap;
1073 }
1074 else {
1075 driver->Clear = clear_buffers;
1076 driver->CopyPixels = xmesa_CopyPixels;
1077 if (xmvisual->undithered_pf == PF_8R8G8B &&
1078 xmvisual->dithered_pf == PF_8R8G8B &&
1079 xmvisual->BitsPerPixel == 32) {
1080 driver->DrawPixels = xmesa_DrawPixels_8R8G8B;
1081 }
1082 else if (xmvisual->undithered_pf == PF_5R6G5B) {
1083 driver->DrawPixels = xmesa_DrawPixels_5R6G5B;
1084 }
1085 }
1086
1087 #if ENABLE_EXT_texure_compression_s3tc
1088 driver->ChooseTextureFormat = choose_tex_format;
1089 #else
1090 (void) choose_tex_format;
1091 #endif
1092
1093 #if ENABLE_EXT_timer_query
1094 driver->NewQueryObject = xmesa_new_query_object;
1095 driver->BeginQuery = xmesa_begin_query;
1096 driver->EndQuery = xmesa_end_query;
1097 #endif
1098 }
1099
1100
1101 #define XMESA_NEW_POINT (_NEW_POINT | \
1102 _NEW_RENDERMODE | \
1103 _SWRAST_NEW_RASTERMASK)
1104
1105 #define XMESA_NEW_LINE (_NEW_LINE | \
1106 _NEW_TEXTURE | \
1107 _NEW_LIGHT | \
1108 _NEW_DEPTH | \
1109 _NEW_RENDERMODE | \
1110 _SWRAST_NEW_RASTERMASK)
1111
1112 #define XMESA_NEW_TRIANGLE (_NEW_POLYGON | \
1113 _NEW_TEXTURE | \
1114 _NEW_LIGHT | \
1115 _NEW_DEPTH | \
1116 _NEW_RENDERMODE | \
1117 _SWRAST_NEW_RASTERMASK)
1118
1119
1120 /**
1121 * Extend the software rasterizer with our line/point/triangle
1122 * functions.
1123 * Called during context creation only.
1124 */
1125 void xmesa_register_swrast_functions( struct gl_context *ctx )
1126 {
1127 SWcontext *swrast = SWRAST_CONTEXT( ctx );
1128
1129 swrast->choose_point = xmesa_choose_point;
1130 swrast->choose_line = xmesa_choose_line;
1131 swrast->choose_triangle = xmesa_choose_triangle;
1132
1133 /* XXX these lines have no net effect. Remove??? */
1134 swrast->InvalidatePointMask |= XMESA_NEW_POINT;
1135 swrast->InvalidateLineMask |= XMESA_NEW_LINE;
1136 swrast->InvalidateTriangleMask |= XMESA_NEW_TRIANGLE;
1137 }