2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
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:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
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.
28 * General device driver functions for Xlib driver.
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"
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"
54 #include "tnl/t_context.h"
55 #include "drivers/common/meta.h"
61 * Dithering kernels and lookup tables.
64 const 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,
71 const short xmesa_HPCR_DRGB[3][2][16] = {
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}
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}
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}
86 const 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
95 finish_or_flush( struct gl_context *ctx )
97 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
99 _glthread_LOCK_MUTEX(_xmesa_lock);
100 XSync( xmesa->display, False );
101 _glthread_UNLOCK_MUTEX(_xmesa_lock);
107 clear_color( struct gl_context *ctx, const GLfloat color[4] )
109 if (ctx->DrawBuffer->Name == 0) {
110 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
111 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
113 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]);
114 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]);
115 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]);
116 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]);
117 xmesa->clearpixel = xmesa_color_to_pixel( ctx,
118 xmesa->clearcolor[0],
119 xmesa->clearcolor[1],
120 xmesa->clearcolor[2],
121 xmesa->clearcolor[3],
122 xmesa->xm_visual->undithered_pf );
123 _glthread_LOCK_MUTEX(_xmesa_lock);
124 XMesaSetForeground( xmesa->display, xmbuf->cleargc,
126 _glthread_UNLOCK_MUTEX(_xmesa_lock);
132 /* Implements glColorMask() */
134 color_mask(struct gl_context *ctx,
135 GLboolean rmask, GLboolean gmask, GLboolean bmask, GLboolean amask)
137 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
139 const int xclass = xmesa->xm_visual->visualType;
142 if (ctx->DrawBuffer->Name != 0)
145 xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
147 if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) {
149 if (rmask && gmask && bmask) {
150 m = ((unsigned long)~0L);
154 if (rmask) m |= GET_REDMASK(xmesa->xm_visual);
155 if (gmask) m |= GET_GREENMASK(xmesa->xm_visual);
156 if (bmask) m |= GET_BLUEMASK(xmesa->xm_visual);
158 XMesaSetPlaneMask( xmesa->display, xmbuf->cleargc, m );
164 /**********************************************************************/
165 /*** glClear implementations ***/
166 /**********************************************************************/
170 * Clear the front or back color buffer, if it's implemented with a pixmap.
173 clear_pixmap(struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
174 GLint x, GLint y, GLint width, GLint height)
176 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
177 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
182 assert(xmesa->display);
184 assert(xmbuf->cleargc);
186 XMesaFillRectangle( xmesa->display, xrb->pixmap, xmbuf->cleargc,
187 x, xrb->Base.Height - y - height,
193 clear_8bit_ximage( struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
194 GLint x, GLint y, GLint width, GLint height )
196 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
198 for (i = 0; i < height; i++) {
199 GLubyte *ptr = PIXEL_ADDR1(xrb, x, y + i);
200 memset( ptr, xmesa->clearpixel, width );
206 clear_HPCR_ximage( struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
207 GLint x, GLint y, GLint width, GLint height )
209 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
211 for (i = y; i < y + height; i++) {
212 GLubyte *ptr = PIXEL_ADDR1( xrb, x, i );
214 const GLubyte *sptr = xmesa->xm_visual->hpcr_clear_ximage_pattern[0];
218 for (j = x; j < x + width; j++) {
227 clear_16bit_ximage( struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
228 GLint x, GLint y, GLint width, GLint height)
230 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
231 GLuint pixel = (GLuint) xmesa->clearpixel;
234 if (xmesa->swapbytes) {
235 pixel = ((pixel >> 8) & 0x00ff) | ((pixel << 8) & 0xff00);
238 for (j = 0; j < height; j++) {
239 GLushort *ptr2 = PIXEL_ADDR2(xrb, x, y + j);
240 for (i = 0; i < width; i++) {
247 /* Optimized code provided by Nozomi Ytow <noz@xfree86.org> */
249 clear_24bit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
250 GLint x, GLint y, GLint width, GLint height)
252 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
253 const GLubyte r = xmesa->clearcolor[0];
254 const GLubyte g = xmesa->clearcolor[1];
255 const GLubyte b = xmesa->clearcolor[2];
257 if (r == g && g == b) {
258 /* same value for all three components (gray) */
260 for (j = 0; j < height; j++) {
261 bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j);
262 memset(ptr3, r, 3 * width);
266 /* non-gray clear color */
268 for (j = 0; j < height; j++) {
269 bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j);
270 for (i = 0; i < width; i++) {
282 clear_32bit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
283 GLint x, GLint y, GLint width, GLint height)
285 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
286 register GLuint pixel = (GLuint) xmesa->clearpixel;
291 if (xmesa->swapbytes) {
292 pixel = ((pixel >> 24) & 0x000000ff)
293 | ((pixel >> 8) & 0x0000ff00)
294 | ((pixel << 8) & 0x00ff0000)
295 | ((pixel << 24) & 0xff000000);
298 if (width == xrb->Base.Width && height == xrb->Base.Height) {
299 /* clearing whole buffer */
300 const GLuint n = xrb->Base.Width * xrb->Base.Height;
301 GLuint *ptr4 = (GLuint *) xrb->ximage->data;
304 memset(ptr4, pixel, 4 * n);
308 for (i = 0; i < n; i++)
313 /* clearing scissored region */
315 for (j = 0; j < height; j++) {
316 GLuint *ptr4 = PIXEL_ADDR4(xrb, x, y + j);
317 for (i = 0; i < width; i++) {
326 clear_nbit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb,
327 GLint x, GLint y, GLint width, GLint height)
329 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
330 XMesaImage *img = xrb->ximage;
333 /* TODO: optimize this */
335 for (j = 0; j < height; j++) {
336 for (i = 0; i < width; i++) {
337 XMesaPutPixel(img, x+i, y-j, xmesa->clearpixel);
345 clear_buffers(struct gl_context *ctx, GLbitfield buffers)
347 if (ctx->DrawBuffer->Name == 0) {
348 /* this is a window system framebuffer */
349 const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask[0];
350 XMesaBuffer b = XMESA_BUFFER(ctx->DrawBuffer);
351 const GLint x = ctx->DrawBuffer->_Xmin;
352 const GLint y = ctx->DrawBuffer->_Ymin;
353 const GLint width = ctx->DrawBuffer->_Xmax - x;
354 const GLint height = ctx->DrawBuffer->_Ymax - y;
356 /* we can't handle color or index masking */
357 if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) {
358 if (buffers & BUFFER_BIT_FRONT_LEFT) {
359 /* clear front color buffer */
360 struct gl_renderbuffer *frontRb
361 = ctx->DrawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
362 if (b->frontxrb == xmesa_renderbuffer(frontRb)) {
363 /* renderbuffer is not wrapped - great! */
364 b->frontxrb->clearFunc(ctx, b->frontxrb, x, y, width, height);
365 buffers &= ~BUFFER_BIT_FRONT_LEFT;
368 /* we can't directly clear an alpha-wrapped color buffer */
371 if (buffers & BUFFER_BIT_BACK_LEFT) {
372 /* clear back color buffer */
373 struct gl_renderbuffer *backRb
374 = ctx->DrawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer;
375 if (b->backxrb == xmesa_renderbuffer(backRb)) {
376 /* renderbuffer is not wrapped - great! */
377 b->backxrb->clearFunc(ctx, b->backxrb, x, y, width, height);
378 buffers &= ~BUFFER_BIT_BACK_LEFT;
384 _swrast_Clear(ctx, buffers);
388 /* XXX these functions haven't been tested in the Xserver environment */
392 * Check if we can do an optimized glDrawPixels into an 8R8G8B visual.
395 can_do_DrawPixels_8R8G8B(struct gl_context *ctx, GLenum format, GLenum type)
397 if (format == GL_BGRA &&
398 type == GL_UNSIGNED_BYTE &&
400 ctx->DrawBuffer->Name == 0 &&
401 ctx->Pixel.ZoomX == 1.0 && /* no zooming */
402 ctx->Pixel.ZoomY == 1.0 &&
403 ctx->_ImageTransferState == 0 /* no color tables, scale/bias, etc */) {
404 const SWcontext *swrast = SWRAST_CONTEXT(ctx);
406 if (swrast->NewState)
407 _swrast_validate_derived( ctx );
409 if ((swrast->_RasterMask & ~CLIP_BIT) == 0) /* no blend, z-test, etc */ {
410 struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
412 struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb->Wrapped);
414 xrb->pixmap && /* drawing to pixmap or window */
415 _mesa_get_format_bits(xrb->Base.Format, GL_ALPHA_BITS) == 0) {
426 * This function implements glDrawPixels() with an XPutImage call when
427 * drawing to the front buffer (X Window drawable).
428 * The image format must be GL_BGRA to match the PF_8R8G8B pixel format.
431 xmesa_DrawPixels_8R8G8B( struct gl_context *ctx,
432 GLint x, GLint y, GLsizei width, GLsizei height,
433 GLenum format, GLenum type,
434 const struct gl_pixelstore_attrib *unpack,
435 const GLvoid *pixels )
437 if (can_do_DrawPixels_8R8G8B(ctx, format, type)) {
438 const SWcontext *swrast = SWRAST_CONTEXT( ctx );
439 struct gl_pixelstore_attrib clippedUnpack = *unpack;
445 if (swrast->NewState)
446 _swrast_validate_derived( ctx );
448 if (_mesa_is_bufferobj(unpack->BufferObj)) {
449 /* unpack from PBO */
451 if (!_mesa_validate_pbo_access(2, unpack, width, height, 1,
452 format, type, INT_MAX, pixels)) {
453 _mesa_error(ctx, GL_INVALID_OPERATION,
454 "glDrawPixels(invalid PBO access)");
457 buf = (GLubyte *) ctx->Driver.MapBuffer(ctx,
458 GL_PIXEL_UNPACK_BUFFER_EXT,
462 /* buffer is already mapped - that's an error */
463 _mesa_error(ctx, GL_INVALID_OPERATION,
464 "glDrawPixels(PBO is mapped)");
467 pixels = ADD_POINTERS(buf, pixels);
470 if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) {
471 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
472 XMesaDisplay *dpy = xmesa->xm_visual->display;
473 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
474 const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */
475 struct xmesa_renderbuffer *xrb
476 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped);
477 const int srcX = clippedUnpack.SkipPixels;
478 const int srcY = clippedUnpack.SkipRows;
479 const int rowLength = clippedUnpack.RowLength;
482 ASSERT(xmesa->xm_visual->dithered_pf == PF_8R8G8B);
483 ASSERT(xmesa->xm_visual->undithered_pf == PF_8R8G8B);
487 /* This is a little tricky since all coordinates up to now have
488 * been in the OpenGL bottom-to-top orientation. X is top-to-bottom
489 * so we have to carefully compute the Y coordinates/addresses here.
491 memset(&ximage, 0, sizeof(XMesaImage));
492 ximage.width = width;
493 ximage.height = height;
494 ximage.format = ZPixmap;
495 ximage.data = (char *) pixels
496 + ((srcY + h - 1) * rowLength + srcX) * 4;
497 ximage.byte_order = LSBFirst;
498 ximage.bitmap_unit = 32;
499 ximage.bitmap_bit_order = LSBFirst;
500 ximage.bitmap_pad = 32;
502 ximage.bits_per_pixel = 32;
503 ximage.bytes_per_line = -rowLength * 4; /* negative to flip image */
504 /* it seems we don't need to set the ximage.red/green/blue_mask fields */
505 /* flip Y axis for dest position */
506 dstY = YFLIP(xrb, dstY) - h + 1;
507 XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h);
510 if (_mesa_is_bufferobj(unpack->BufferObj)) {
511 ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
516 /* software fallback */
517 _swrast_DrawPixels(ctx, x, y, width, height,
518 format, type, unpack, pixels);
525 * Check if we can do an optimized glDrawPixels into an 5R6G5B visual.
528 can_do_DrawPixels_5R6G5B(struct gl_context *ctx, GLenum format, GLenum type)
530 if (format == GL_RGB &&
531 type == GL_UNSIGNED_SHORT_5_6_5 &&
532 !ctx->Color.DitherFlag && /* no dithering */
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);
540 if (swrast->NewState)
541 _swrast_validate_derived( ctx );
543 if ((swrast->_RasterMask & ~CLIP_BIT) == 0) /* no blend, z-test, etc */ {
544 struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
546 struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb->Wrapped);
548 xrb->pixmap && /* drawing to pixmap or window */
549 _mesa_get_format_bits(xrb->Base.Format, GL_ALPHA_BITS) == 0) {
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.
566 xmesa_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 )
572 if (can_do_DrawPixels_5R6G5B(ctx, format, type)) {
573 const SWcontext *swrast = SWRAST_CONTEXT( ctx );
574 struct gl_pixelstore_attrib clippedUnpack = *unpack;
580 if (swrast->NewState)
581 _swrast_validate_derived( ctx );
583 if (_mesa_is_bufferobj(unpack->BufferObj)) {
584 /* unpack from PBO */
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)");
592 buf = (GLubyte *) ctx->Driver.MapBuffer(ctx,
593 GL_PIXEL_UNPACK_BUFFER_EXT,
597 /* buffer is already mapped - that's an error */
598 _mesa_error(ctx, GL_INVALID_OPERATION,
599 "glDrawPixels(PBO is mapped)");
602 pixels = ADD_POINTERS(buf, pixels);
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;
617 ASSERT(xmesa->xm_visual->undithered_pf == PF_5R6G5B);
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.
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;
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);
644 if (unpack->BufferObj->Name) {
645 ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
650 /* software fallback */
651 _swrast_DrawPixels(ctx, x, y, width, height,
652 format, type, unpack, pixels);
658 * Determine if we can do an optimized glCopyPixels.
661 can_do_CopyPixels(struct gl_context *ctx, GLenum type)
663 if (type == GL_COLOR &&
664 ctx->_ImageTransferState == 0 && /* no color tables, scale/bias, etc */
665 ctx->Pixel.ZoomX == 1.0 && /* no zooming */
666 ctx->Pixel.ZoomY == 1.0 &&
667 ctx->Color.DrawBuffer[0] == GL_FRONT && /* copy to front buf */
668 ctx->Pixel.ReadBuffer == GL_FRONT && /* copy from front buf */
669 ctx->ReadBuffer->_ColorReadBuffer &&
670 ctx->DrawBuffer->_ColorDrawBuffers[0]) {
671 const SWcontext *swrast = SWRAST_CONTEXT( ctx );
673 if (swrast->NewState)
674 _swrast_validate_derived( ctx );
676 if ((swrast->_RasterMask & ~CLIP_BIT) == 0x0 &&
678 ctx->ReadBuffer->_ColorReadBuffer &&
680 ctx->DrawBuffer->_ColorDrawBuffers[0]) {
681 struct xmesa_renderbuffer *srcXrb
682 = xmesa_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer->Wrapped);
683 struct xmesa_renderbuffer *dstXrb
684 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped);
685 if (srcXrb->pixmap && dstXrb->pixmap) {
695 * Implement glCopyPixels for the front color buffer (or back buffer Pixmap)
696 * for the color buffer. Don't support zooming, pixel transfer, etc.
697 * We do support copying from one window to another, ala glXMakeCurrentRead.
700 xmesa_CopyPixels( struct gl_context *ctx,
701 GLint srcx, GLint srcy, GLsizei width, GLsizei height,
702 GLint destx, GLint desty, GLenum type )
704 if (can_do_CopyPixels(ctx, type)) {
705 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
706 XMesaDisplay *dpy = xmesa->xm_visual->display;
707 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
708 const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */
709 struct xmesa_renderbuffer *srcXrb
710 = xmesa_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer->Wrapped);
711 struct xmesa_renderbuffer *dstXrb
712 = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped);
717 /* Note: we don't do any special clipping work here. We could,
718 * but X will do it for us.
720 srcy = YFLIP(srcXrb, srcy) - height + 1;
721 desty = YFLIP(dstXrb, desty) - height + 1;
722 XCopyArea(dpy, srcXrb->pixmap, dstXrb->pixmap, gc,
723 srcx, srcy, width, height, destx, desty);
726 _swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type );
734 * Every driver should implement a GetString function in order to
735 * return a meaningful GL_RENDERER string.
737 static const GLubyte *
738 get_string( struct gl_context *ctx, GLenum name )
743 return (const GLubyte *) "Mesa X11";
753 * We implement the glEnable function only because we care about
754 * dither enable/disable.
757 enable( struct gl_context *ctx, GLenum pname, GLboolean state )
759 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
764 xmesa->pixelformat = xmesa->xm_visual->dithered_pf;
766 xmesa->pixelformat = xmesa->xm_visual->undithered_pf;
769 ; /* silence compiler warning */
775 clear_color_HPCR_ximage( struct gl_context *ctx, const GLfloat color[4] )
778 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
780 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]);
781 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]);
782 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]);
783 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]);
785 if (color[0] == 0.0 && color[1] == 0.0 && color[2] == 0.0) {
787 memset( xmesa->xm_visual->hpcr_clear_ximage_pattern, 0x0 ,
788 sizeof(xmesa->xm_visual->hpcr_clear_ximage_pattern));
791 /* build clear pattern */
792 for (i=0; i<16; i++) {
793 xmesa->xm_visual->hpcr_clear_ximage_pattern[0][i] =
795 xmesa->clearcolor[0],
796 xmesa->clearcolor[1],
797 xmesa->clearcolor[2]);
798 xmesa->xm_visual->hpcr_clear_ximage_pattern[1][i] =
800 xmesa->clearcolor[0],
801 xmesa->clearcolor[1],
802 xmesa->clearcolor[2]);
809 clear_color_HPCR_pixmap( struct gl_context *ctx, const GLfloat color[4] )
812 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
814 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]);
815 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]);
816 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]);
817 CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]);
819 if (color[0] == 0.0 && color[1] == 0.0 && color[2] == 0.0) {
821 for (i=0; i<16; i++) {
822 XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 0, 0);
823 XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 1, 0);
827 for (i=0; i<16; i++) {
828 XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 0,
830 xmesa->clearcolor[0],
831 xmesa->clearcolor[1],
832 xmesa->clearcolor[2]));
833 XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 1,
835 xmesa->clearcolor[0],
836 xmesa->clearcolor[1],
837 xmesa->clearcolor[2]));
840 /* change tile pixmap content */
841 XMesaPutImage(xmesa->display,
842 (XMesaDrawable)xmesa->xm_visual->hpcr_clear_pixmap,
843 XMESA_BUFFER(ctx->DrawBuffer)->cleargc,
844 xmesa->xm_visual->hpcr_clear_ximage, 0, 0, 0, 0, 16, 2);
849 * Called when the driver should update its state, based on the new_state
853 xmesa_update_state( struct gl_context *ctx, GLbitfield new_state )
855 const XMesaContext xmesa = XMESA_CONTEXT(ctx);
857 /* Propagate statechange information to swrast and swrast_setup
858 * modules. The X11 driver has no internal GL-dependent state.
860 _swrast_InvalidateState( ctx, new_state );
861 _tnl_InvalidateState( ctx, new_state );
862 _vbo_InvalidateState( ctx, new_state );
863 _swsetup_InvalidateState( ctx, new_state );
865 if (ctx->DrawBuffer->Name != 0)
869 * GL_DITHER, GL_READ/DRAW_BUFFER, buffer binding state, etc. effect
870 * renderbuffer span/clear funcs.
871 * Check _NEW_COLOR to detect dither enable/disable.
873 if (new_state & (_NEW_COLOR | _NEW_BUFFERS)) {
874 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
875 struct xmesa_renderbuffer *front_xrb, *back_xrb;
877 front_xrb = xmbuf->frontxrb;
879 xmesa_set_renderbuffer_funcs(front_xrb, xmesa->pixelformat,
880 xmesa->xm_visual->BitsPerPixel);
881 front_xrb->clearFunc = clear_pixmap;
884 back_xrb = xmbuf->backxrb;
886 xmesa_set_renderbuffer_funcs(back_xrb, xmesa->pixelformat,
887 xmesa->xm_visual->BitsPerPixel);
888 if (xmbuf->backxrb->pixmap) {
889 back_xrb->clearFunc = clear_pixmap;
892 switch (xmesa->xm_visual->BitsPerPixel) {
894 if (xmesa->xm_visual->hpcr_clear_flag) {
895 back_xrb->clearFunc = clear_HPCR_ximage;
898 back_xrb->clearFunc = clear_8bit_ximage;
902 back_xrb->clearFunc = clear_16bit_ximage;
905 back_xrb->clearFunc = clear_24bit_ximage;
908 back_xrb->clearFunc = clear_32bit_ximage;
911 back_xrb->clearFunc = clear_nbit_ximage;
918 if (xmesa->xm_visual->hpcr_clear_flag) {
919 /* this depends on whether we're drawing to the front or back buffer */
923 ctx->Driver.ClearColor = clear_color_HPCR_pixmap;
926 ctx->Driver.ClearColor = clear_color_HPCR_ximage;
929 (void) clear_color_HPCR_pixmap;
930 (void) clear_color_HPCR_ximage;
938 * In SW, we don't really compress GL_COMPRESSED_RGB[A] textures!
941 choose_tex_format( struct gl_context *ctx, GLint internalFormat,
942 GLenum format, GLenum type )
944 switch (internalFormat) {
945 case GL_COMPRESSED_RGB_ARB:
946 return MESA_FORMAT_RGB888;
947 case GL_COMPRESSED_RGBA_ARB:
948 return MESA_FORMAT_RGBA8888;
950 return _mesa_choose_tex_format(ctx, internalFormat, format, type);
956 * Called by glViewport.
957 * This is a good time for us to poll the current X window size and adjust
958 * our renderbuffers to match the current window size.
959 * Remember, we have no opportunity to respond to conventional
960 * X Resize/StructureNotify events since the X driver has no event loop.
962 * Note that this trick isn't fool-proof. If the application never calls
963 * glViewport, our notion of the current window size may be incorrect.
964 * That problem led to the GLX_MESA_resize_buffers extension.
967 xmesa_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
969 XMesaContext xmctx = XMESA_CONTEXT(ctx);
970 XMesaBuffer xmdrawbuf = XMESA_BUFFER(ctx->WinSysDrawBuffer);
971 XMesaBuffer xmreadbuf = XMESA_BUFFER(ctx->WinSysReadBuffer);
972 xmesa_check_and_update_buffer_size(xmctx, xmdrawbuf);
973 xmesa_check_and_update_buffer_size(xmctx, xmreadbuf);
981 #if ENABLE_EXT_timer_query
984 * The GL_EXT_timer_query extension is not enabled for the XServer
985 * indirect renderer. Not sure about how/if wrapping of gettimeofday()
989 struct xmesa_query_object
991 struct gl_query_object Base;
992 struct timeval StartTime;
996 static struct gl_query_object *
997 xmesa_new_query_object(struct gl_context *ctx, GLuint id)
999 struct xmesa_query_object *q = CALLOC_STRUCT(xmesa_query_object);
1002 q->Base.Ready = GL_TRUE;
1009 xmesa_begin_query(struct gl_context *ctx, struct gl_query_object *q)
1011 if (q->Target == GL_TIME_ELAPSED_EXT) {
1012 struct xmesa_query_object *xq = (struct xmesa_query_object *) q;
1013 (void) gettimeofday(&xq->StartTime, NULL);
1019 * Return the difference between the two given times in microseconds.
1022 #define suseconds_t unsigned int
1025 time_diff(const struct timeval *t0, const struct timeval *t1)
1027 GLuint64EXT seconds0 = t0->tv_sec & 0xff; /* 0 .. 255 seconds */
1028 GLuint64EXT seconds1 = t1->tv_sec & 0xff; /* 0 .. 255 seconds */
1029 GLuint64EXT nanosec0 = (seconds0 * 1000000 + t0->tv_usec) * 1000;
1030 GLuint64EXT nanosec1 = (seconds1 * 1000000 + t1->tv_usec) * 1000;
1031 return nanosec1 - nanosec0;
1036 xmesa_end_query(struct gl_context *ctx, struct gl_query_object *q)
1038 if (q->Target == GL_TIME_ELAPSED_EXT) {
1039 struct xmesa_query_object *xq = (struct xmesa_query_object *) q;
1040 struct timeval endTime;
1041 (void) gettimeofday(&endTime, NULL);
1042 /* result is in nanoseconds! */
1043 q->Result = time_diff(&xq->StartTime, &endTime);
1048 #endif /* ENABLE_timer_query */
1052 * Initialize the device driver function table with the functions
1053 * we implement in this driver.
1056 xmesa_init_driver_functions( XMesaVisual xmvisual,
1057 struct dd_function_table *driver )
1059 driver->GetString = get_string;
1060 driver->UpdateState = xmesa_update_state;
1061 driver->GetBufferSize = NULL; /* OBSOLETE */
1062 driver->Flush = finish_or_flush;
1063 driver->Finish = finish_or_flush;
1064 driver->ClearColor = clear_color;
1065 driver->ColorMask = color_mask;
1066 driver->Enable = enable;
1067 driver->Viewport = xmesa_viewport;
1068 if (TEST_META_FUNCS) {
1069 driver->Clear = _mesa_meta_Clear;
1070 driver->CopyPixels = _mesa_meta_CopyPixels;
1071 driver->BlitFramebuffer = _mesa_meta_BlitFramebuffer;
1072 driver->DrawPixels = _mesa_meta_DrawPixels;
1073 driver->Bitmap = _mesa_meta_Bitmap;
1076 driver->Clear = clear_buffers;
1077 driver->CopyPixels = xmesa_CopyPixels;
1078 if (xmvisual->undithered_pf == PF_8R8G8B &&
1079 xmvisual->dithered_pf == PF_8R8G8B &&
1080 xmvisual->BitsPerPixel == 32) {
1081 driver->DrawPixels = xmesa_DrawPixels_8R8G8B;
1083 else if (xmvisual->undithered_pf == PF_5R6G5B) {
1084 driver->DrawPixels = xmesa_DrawPixels_5R6G5B;
1088 #if ENABLE_EXT_texure_compression_s3tc
1089 driver->ChooseTextureFormat = choose_tex_format;
1091 (void) choose_tex_format;
1094 #if ENABLE_EXT_timer_query
1095 driver->NewQueryObject = xmesa_new_query_object;
1096 driver->BeginQuery = xmesa_begin_query;
1097 driver->EndQuery = xmesa_end_query;
1102 #define XMESA_NEW_POINT (_NEW_POINT | \
1104 _SWRAST_NEW_RASTERMASK)
1106 #define XMESA_NEW_LINE (_NEW_LINE | \
1111 _SWRAST_NEW_RASTERMASK)
1113 #define XMESA_NEW_TRIANGLE (_NEW_POLYGON | \
1118 _SWRAST_NEW_RASTERMASK)
1122 * Extend the software rasterizer with our line/point/triangle
1124 * Called during context creation only.
1126 void xmesa_register_swrast_functions( struct gl_context *ctx )
1128 SWcontext *swrast = SWRAST_CONTEXT( ctx );
1130 swrast->choose_point = xmesa_choose_point;
1131 swrast->choose_line = xmesa_choose_line;
1132 swrast->choose_triangle = xmesa_choose_triangle;
1134 /* XXX these lines have no net effect. Remove??? */
1135 swrast->InvalidatePointMask |= XMESA_NEW_POINT;
1136 swrast->InvalidateLineMask |= XMESA_NEW_LINE;
1137 swrast->InvalidateTriangleMask |= XMESA_NEW_TRIANGLE;