2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
28 * General device driver functions for Xlib driver.
31 #include "glxheader.h"
32 #include "main/bufferobj.h"
33 #include "main/context.h"
34 #include "main/colormac.h"
35 #include "main/fbobject.h"
36 #include "main/macros.h"
37 #include "main/mipmap.h"
38 #include "main/image.h"
39 #include "main/imports.h"
40 #include "main/mtypes.h"
42 #include "main/texformat.h"
43 #include "swrast/swrast.h"
44 #include "swrast/s_context.h"
45 #include "swrast_setup/swrast_setup.h"
47 #include "tnl/t_context.h"
48 #include "drivers/common/meta.h"
53 finish_or_flush( struct gl_context
*ctx
)
55 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
57 _glthread_LOCK_MUTEX(_xmesa_lock
);
58 XSync( xmesa
->display
, False
);
59 _glthread_UNLOCK_MUTEX(_xmesa_lock
);
64 /* Implements glColorMask() */
66 color_mask(struct gl_context
*ctx
,
67 GLboolean rmask
, GLboolean gmask
, GLboolean bmask
, GLboolean amask
)
69 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
71 const int xclass
= xmesa
->xm_visual
->visualType
;
74 if (_mesa_is_user_fbo(ctx
->DrawBuffer
))
77 xmbuf
= XMESA_BUFFER(ctx
->DrawBuffer
);
79 if (xclass
== GLX_TRUE_COLOR
|| xclass
== GLX_DIRECT_COLOR
) {
81 if (rmask
&& gmask
&& bmask
) {
82 m
= ((unsigned long)~0L);
86 if (rmask
) m
|= GET_REDMASK(xmesa
->xm_visual
);
87 if (gmask
) m
|= GET_GREENMASK(xmesa
->xm_visual
);
88 if (bmask
) m
|= GET_BLUEMASK(xmesa
->xm_visual
);
90 XMesaSetPlaneMask( xmesa
->display
, xmbuf
->cleargc
, m
);
96 /**********************************************************************/
97 /*** glClear implementations ***/
98 /**********************************************************************/
102 * Clear the front or back color buffer, if it's implemented with a pixmap.
105 clear_pixmap(struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
106 GLint x
, GLint y
, GLint width
, GLint height
)
108 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
109 XMesaBuffer xmbuf
= XMESA_BUFFER(ctx
->DrawBuffer
);
114 assert(xmesa
->display
);
116 assert(xmbuf
->cleargc
);
118 XMesaFillRectangle( xmesa
->display
, xrb
->pixmap
, xmbuf
->cleargc
,
119 x
, xrb
->Base
.Base
.Height
- y
- height
,
125 clear_16bit_ximage( struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
126 GLint x
, GLint y
, GLint width
, GLint height
)
128 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
129 GLuint pixel
= (GLuint
) xmesa
->clearpixel
;
132 if (xmesa
->swapbytes
) {
133 pixel
= ((pixel
>> 8) & 0x00ff) | ((pixel
<< 8) & 0xff00);
136 for (j
= 0; j
< height
; j
++) {
137 GLushort
*ptr2
= PIXEL_ADDR2(xrb
, x
, y
+ j
);
138 for (i
= 0; i
< width
; i
++) {
145 /* Optimized code provided by Nozomi Ytow <noz@xfree86.org> */
147 clear_24bit_ximage(struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
148 GLint x
, GLint y
, GLint width
, GLint height
)
150 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
151 const GLubyte r
= xmesa
->clearcolor
[0];
152 const GLubyte g
= xmesa
->clearcolor
[1];
153 const GLubyte b
= xmesa
->clearcolor
[2];
155 if (r
== g
&& g
== b
) {
156 /* same value for all three components (gray) */
158 for (j
= 0; j
< height
; j
++) {
159 bgr_t
*ptr3
= PIXEL_ADDR3(xrb
, x
, y
+ j
);
160 memset(ptr3
, r
, 3 * width
);
164 /* non-gray clear color */
166 for (j
= 0; j
< height
; j
++) {
167 bgr_t
*ptr3
= PIXEL_ADDR3(xrb
, x
, y
+ j
);
168 for (i
= 0; i
< width
; i
++) {
180 clear_32bit_ximage(struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
181 GLint x
, GLint y
, GLint width
, GLint height
)
183 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
184 register GLuint pixel
= (GLuint
) xmesa
->clearpixel
;
189 if (xmesa
->swapbytes
) {
190 pixel
= ((pixel
>> 24) & 0x000000ff)
191 | ((pixel
>> 8) & 0x0000ff00)
192 | ((pixel
<< 8) & 0x00ff0000)
193 | ((pixel
<< 24) & 0xff000000);
196 if (width
== xrb
->Base
.Base
.Width
&& height
== xrb
->Base
.Base
.Height
) {
197 /* clearing whole buffer */
198 const GLuint n
= xrb
->Base
.Base
.Width
* xrb
->Base
.Base
.Height
;
199 GLuint
*ptr4
= (GLuint
*) xrb
->ximage
->data
;
202 memset(ptr4
, pixel
, 4 * n
);
206 for (i
= 0; i
< n
; i
++)
211 /* clearing scissored region */
213 for (j
= 0; j
< height
; j
++) {
214 GLuint
*ptr4
= PIXEL_ADDR4(xrb
, x
, y
+ j
);
215 for (i
= 0; i
< width
; i
++) {
224 clear_nbit_ximage(struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
225 GLint x
, GLint y
, GLint width
, GLint height
)
227 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
228 XMesaImage
*img
= xrb
->ximage
;
231 /* TODO: optimize this */
233 for (j
= 0; j
< height
; j
++) {
234 for (i
= 0; i
< width
; i
++) {
235 XMesaPutPixel(img
, x
+i
, y
-j
, xmesa
->clearpixel
);
243 clear_buffers(struct gl_context
*ctx
, GLbitfield buffers
)
245 if (_mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
246 /* this is a window system framebuffer */
247 const GLuint
*colorMask
= (GLuint
*) &ctx
->Color
.ColorMask
[0];
248 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
249 XMesaBuffer b
= XMESA_BUFFER(ctx
->DrawBuffer
);
250 const GLint x
= ctx
->DrawBuffer
->_Xmin
;
251 const GLint y
= ctx
->DrawBuffer
->_Ymin
;
252 const GLint width
= ctx
->DrawBuffer
->_Xmax
- x
;
253 const GLint height
= ctx
->DrawBuffer
->_Ymax
- y
;
255 _mesa_unclamped_float_rgba_to_ubyte(xmesa
->clearcolor
,
256 ctx
->Color
.ClearColor
.f
);
257 xmesa
->clearpixel
= xmesa_color_to_pixel(ctx
,
258 xmesa
->clearcolor
[0],
259 xmesa
->clearcolor
[1],
260 xmesa
->clearcolor
[2],
261 xmesa
->clearcolor
[3],
262 xmesa
->xm_visual
->undithered_pf
);
263 XMesaSetForeground(xmesa
->display
, b
->cleargc
, xmesa
->clearpixel
);
265 /* we can't handle color or index masking */
266 if (*colorMask
== 0xffffffff && ctx
->Color
.IndexMask
== 0xffffffff) {
267 if (buffers
& BUFFER_BIT_FRONT_LEFT
) {
268 /* clear front color buffer */
269 struct gl_renderbuffer
*frontRb
270 = ctx
->DrawBuffer
->Attachment
[BUFFER_FRONT_LEFT
].Renderbuffer
;
271 if (b
->frontxrb
== xmesa_renderbuffer(frontRb
)) {
272 /* renderbuffer is not wrapped - great! */
273 b
->frontxrb
->clearFunc(ctx
, b
->frontxrb
, x
, y
, width
, height
);
274 buffers
&= ~BUFFER_BIT_FRONT_LEFT
;
277 /* we can't directly clear an alpha-wrapped color buffer */
280 if (buffers
& BUFFER_BIT_BACK_LEFT
) {
281 /* clear back color buffer */
282 struct gl_renderbuffer
*backRb
283 = ctx
->DrawBuffer
->Attachment
[BUFFER_BACK_LEFT
].Renderbuffer
;
284 if (b
->backxrb
== xmesa_renderbuffer(backRb
)) {
285 /* renderbuffer is not wrapped - great! */
286 b
->backxrb
->clearFunc(ctx
, b
->backxrb
, x
, y
, width
, height
);
287 buffers
&= ~BUFFER_BIT_BACK_LEFT
;
293 _swrast_Clear(ctx
, buffers
);
297 /* XXX these functions haven't been tested in the Xserver environment */
301 * Check if we can do an optimized glDrawPixels into an 8R8G8B visual.
304 can_do_DrawPixels_8R8G8B(struct gl_context
*ctx
, GLenum format
, GLenum type
)
306 if (format
== GL_BGRA
&&
307 type
== GL_UNSIGNED_BYTE
&&
309 _mesa_is_winsys_fbo(ctx
->DrawBuffer
) &&
310 ctx
->Pixel
.ZoomX
== 1.0 && /* no zooming */
311 ctx
->Pixel
.ZoomY
== 1.0 &&
312 ctx
->_ImageTransferState
== 0 /* no color tables, scale/bias, etc */) {
313 const SWcontext
*swrast
= SWRAST_CONTEXT(ctx
);
315 if (swrast
->NewState
)
316 _swrast_validate_derived( ctx
);
318 if ((swrast
->_RasterMask
& ~CLIP_BIT
) == 0) /* no blend, z-test, etc */ {
319 struct gl_renderbuffer
*rb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[0];
321 struct xmesa_renderbuffer
*xrb
= xmesa_renderbuffer(rb
);
323 xrb
->pixmap
&& /* drawing to pixmap or window */
324 _mesa_get_format_bits(xrb
->Base
.Base
.Format
, GL_ALPHA_BITS
) == 0) {
335 * This function implements glDrawPixels() with an XPutImage call when
336 * drawing to the front buffer (X Window drawable).
337 * The image format must be GL_BGRA to match the PF_8R8G8B pixel format.
340 xmesa_DrawPixels_8R8G8B( struct gl_context
*ctx
,
341 GLint x
, GLint y
, GLsizei width
, GLsizei height
,
342 GLenum format
, GLenum type
,
343 const struct gl_pixelstore_attrib
*unpack
,
344 const GLvoid
*pixels
)
346 if (can_do_DrawPixels_8R8G8B(ctx
, format
, type
)) {
347 const SWcontext
*swrast
= SWRAST_CONTEXT( ctx
);
348 struct gl_pixelstore_attrib clippedUnpack
= *unpack
;
354 if (swrast
->NewState
)
355 _swrast_validate_derived( ctx
);
357 if (_mesa_is_bufferobj(unpack
->BufferObj
)) {
358 /* unpack from PBO */
360 if (!_mesa_validate_pbo_access(2, unpack
, width
, height
, 1,
361 format
, type
, INT_MAX
, pixels
)) {
362 _mesa_error(ctx
, GL_INVALID_OPERATION
,
363 "glDrawPixels(invalid PBO access)");
366 buf
= (GLubyte
*) ctx
->Driver
.MapBufferRange(ctx
, 0,
367 unpack
->BufferObj
->Size
,
374 pixels
= ADD_POINTERS(buf
, pixels
);
377 if (_mesa_clip_drawpixels(ctx
, &dstX
, &dstY
, &w
, &h
, &clippedUnpack
)) {
378 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
379 XMesaDisplay
*dpy
= xmesa
->xm_visual
->display
;
380 XMesaBuffer xmbuf
= XMESA_BUFFER(ctx
->DrawBuffer
);
381 const XMesaGC gc
= xmbuf
->cleargc
; /* effected by glColorMask */
382 struct xmesa_renderbuffer
*xrb
383 = xmesa_renderbuffer(ctx
->DrawBuffer
->_ColorDrawBuffers
[0]);
384 const int srcX
= clippedUnpack
.SkipPixels
;
385 const int srcY
= clippedUnpack
.SkipRows
;
386 const int rowLength
= clippedUnpack
.RowLength
;
389 ASSERT(xmesa
->xm_visual
->dithered_pf
== PF_8R8G8B
);
390 ASSERT(xmesa
->xm_visual
->undithered_pf
== PF_8R8G8B
);
394 /* This is a little tricky since all coordinates up to now have
395 * been in the OpenGL bottom-to-top orientation. X is top-to-bottom
396 * so we have to carefully compute the Y coordinates/addresses here.
398 memset(&ximage
, 0, sizeof(XMesaImage
));
399 ximage
.width
= width
;
400 ximage
.height
= height
;
401 ximage
.format
= ZPixmap
;
402 ximage
.data
= (char *) pixels
403 + ((srcY
+ h
- 1) * rowLength
+ srcX
) * 4;
404 ximage
.byte_order
= LSBFirst
;
405 ximage
.bitmap_unit
= 32;
406 ximage
.bitmap_bit_order
= LSBFirst
;
407 ximage
.bitmap_pad
= 32;
409 ximage
.bits_per_pixel
= 32;
410 ximage
.bytes_per_line
= -rowLength
* 4; /* negative to flip image */
411 /* it seems we don't need to set the ximage.red/green/blue_mask fields */
412 /* flip Y axis for dest position */
413 dstY
= YFLIP(xrb
, dstY
) - h
+ 1;
414 XPutImage(dpy
, xrb
->pixmap
, gc
, &ximage
, 0, 0, dstX
, dstY
, w
, h
);
417 if (_mesa_is_bufferobj(unpack
->BufferObj
)) {
418 ctx
->Driver
.UnmapBuffer(ctx
, unpack
->BufferObj
, MAP_INTERNAL
);
422 /* software fallback */
423 _swrast_DrawPixels(ctx
, x
, y
, width
, height
,
424 format
, type
, unpack
, pixels
);
431 * Check if we can do an optimized glDrawPixels into an 5R6G5B visual.
434 can_do_DrawPixels_5R6G5B(struct gl_context
*ctx
, GLenum format
, GLenum type
)
436 if (format
== GL_RGB
&&
437 type
== GL_UNSIGNED_SHORT_5_6_5
&&
438 !ctx
->Color
.DitherFlag
&& /* no dithering */
440 _mesa_is_winsys_fbo(ctx
->DrawBuffer
) &&
441 ctx
->Pixel
.ZoomX
== 1.0 && /* no zooming */
442 ctx
->Pixel
.ZoomY
== 1.0 &&
443 ctx
->_ImageTransferState
== 0 /* no color tables, scale/bias, etc */) {
444 const SWcontext
*swrast
= SWRAST_CONTEXT(ctx
);
446 if (swrast
->NewState
)
447 _swrast_validate_derived( ctx
);
449 if ((swrast
->_RasterMask
& ~CLIP_BIT
) == 0) /* no blend, z-test, etc */ {
450 struct gl_renderbuffer
*rb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[0];
452 struct xmesa_renderbuffer
*xrb
= xmesa_renderbuffer(rb
);
454 xrb
->pixmap
&& /* drawing to pixmap or window */
455 _mesa_get_format_bits(xrb
->Base
.Base
.Format
, GL_ALPHA_BITS
) == 0) {
466 * This function implements glDrawPixels() with an XPutImage call when
467 * drawing to the front buffer (X Window drawable). The image format
468 * must be GL_RGB and image type must be GL_UNSIGNED_SHORT_5_6_5 to
469 * match the PF_5R6G5B pixel format.
472 xmesa_DrawPixels_5R6G5B( struct gl_context
*ctx
,
473 GLint x
, GLint y
, GLsizei width
, GLsizei height
,
474 GLenum format
, GLenum type
,
475 const struct gl_pixelstore_attrib
*unpack
,
476 const GLvoid
*pixels
)
478 if (can_do_DrawPixels_5R6G5B(ctx
, format
, type
)) {
479 const SWcontext
*swrast
= SWRAST_CONTEXT( ctx
);
480 struct gl_pixelstore_attrib clippedUnpack
= *unpack
;
486 if (swrast
->NewState
)
487 _swrast_validate_derived( ctx
);
489 if (_mesa_is_bufferobj(unpack
->BufferObj
)) {
490 /* unpack from PBO */
492 if (!_mesa_validate_pbo_access(2, unpack
, width
, height
, 1,
493 format
, type
, INT_MAX
, pixels
)) {
494 _mesa_error(ctx
, GL_INVALID_OPERATION
,
495 "glDrawPixels(invalid PBO access)");
498 buf
= (GLubyte
*) ctx
->Driver
.MapBufferRange(ctx
, 0,
499 unpack
->BufferObj
->Size
,
506 pixels
= ADD_POINTERS(buf
, pixels
);
509 if (_mesa_clip_drawpixels(ctx
, &dstX
, &dstY
, &w
, &h
, &clippedUnpack
)) {
510 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
511 XMesaDisplay
*dpy
= xmesa
->xm_visual
->display
;
512 XMesaBuffer xmbuf
= XMESA_BUFFER(ctx
->DrawBuffer
);
513 const XMesaGC gc
= xmbuf
->cleargc
; /* effected by glColorMask */
514 struct xmesa_renderbuffer
*xrb
515 = xmesa_renderbuffer(ctx
->DrawBuffer
->_ColorDrawBuffers
[0]);
516 const int srcX
= clippedUnpack
.SkipPixels
;
517 const int srcY
= clippedUnpack
.SkipRows
;
518 const int rowLength
= clippedUnpack
.RowLength
;
521 ASSERT(xmesa
->xm_visual
->undithered_pf
== PF_5R6G5B
);
525 /* This is a little tricky since all coordinates up to now have
526 * been in the OpenGL bottom-to-top orientation. X is top-to-bottom
527 * so we have to carefully compute the Y coordinates/addresses here.
529 memset(&ximage
, 0, sizeof(XMesaImage
));
530 ximage
.width
= width
;
531 ximage
.height
= height
;
532 ximage
.format
= ZPixmap
;
533 ximage
.data
= (char *) pixels
534 + ((srcY
+ h
- 1) * rowLength
+ srcX
) * 2;
535 ximage
.byte_order
= LSBFirst
;
536 ximage
.bitmap_unit
= 16;
537 ximage
.bitmap_bit_order
= LSBFirst
;
538 ximage
.bitmap_pad
= 16;
540 ximage
.bits_per_pixel
= 16;
541 ximage
.bytes_per_line
= -rowLength
* 2; /* negative to flip image */
542 /* it seems we don't need to set the ximage.red/green/blue_mask fields */
543 /* flip Y axis for dest position */
544 dstY
= YFLIP(xrb
, dstY
) - h
+ 1;
545 XPutImage(dpy
, xrb
->pixmap
, gc
, &ximage
, 0, 0, dstX
, dstY
, w
, h
);
548 if (unpack
->BufferObj
->Name
) {
549 ctx
->Driver
.UnmapBuffer(ctx
, unpack
->BufferObj
, MAP_INTERNAL
);
553 /* software fallback */
554 _swrast_DrawPixels(ctx
, x
, y
, width
, height
,
555 format
, type
, unpack
, pixels
);
561 * Determine if we can do an optimized glCopyPixels.
564 can_do_CopyPixels(struct gl_context
*ctx
, GLenum type
)
566 if (type
== GL_COLOR
&&
567 ctx
->_ImageTransferState
== 0 && /* no color tables, scale/bias, etc */
568 ctx
->Pixel
.ZoomX
== 1.0 && /* no zooming */
569 ctx
->Pixel
.ZoomY
== 1.0 &&
570 ctx
->Color
.DrawBuffer
[0] == GL_FRONT
&& /* copy to front buf */
571 ctx
->Pixel
.ReadBuffer
== GL_FRONT
&& /* copy from front buf */
572 ctx
->ReadBuffer
->_ColorReadBuffer
&&
573 ctx
->DrawBuffer
->_ColorDrawBuffers
[0]) {
574 const SWcontext
*swrast
= SWRAST_CONTEXT( ctx
);
576 if (swrast
->NewState
)
577 _swrast_validate_derived( ctx
);
579 if ((swrast
->_RasterMask
& ~CLIP_BIT
) == 0x0 &&
581 ctx
->ReadBuffer
->_ColorReadBuffer
&&
583 ctx
->DrawBuffer
->_ColorDrawBuffers
[0]) {
584 struct xmesa_renderbuffer
*srcXrb
585 = xmesa_renderbuffer(ctx
->ReadBuffer
->_ColorReadBuffer
);
586 struct xmesa_renderbuffer
*dstXrb
587 = xmesa_renderbuffer(ctx
->DrawBuffer
->_ColorDrawBuffers
[0]);
588 if (srcXrb
->pixmap
&& dstXrb
->pixmap
) {
598 * Implement glCopyPixels for the front color buffer (or back buffer Pixmap)
599 * for the color buffer. Don't support zooming, pixel transfer, etc.
600 * We do support copying from one window to another, ala glXMakeCurrentRead.
603 xmesa_CopyPixels( struct gl_context
*ctx
,
604 GLint srcx
, GLint srcy
, GLsizei width
, GLsizei height
,
605 GLint destx
, GLint desty
, GLenum type
)
607 if (can_do_CopyPixels(ctx
, type
)) {
608 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
609 XMesaDisplay
*dpy
= xmesa
->xm_visual
->display
;
610 XMesaBuffer xmbuf
= XMESA_BUFFER(ctx
->DrawBuffer
);
611 const XMesaGC gc
= xmbuf
->cleargc
; /* effected by glColorMask */
612 struct xmesa_renderbuffer
*srcXrb
613 = xmesa_renderbuffer(ctx
->ReadBuffer
->_ColorReadBuffer
);
614 struct xmesa_renderbuffer
*dstXrb
615 = xmesa_renderbuffer(ctx
->DrawBuffer
->_ColorDrawBuffers
[0]);
620 /* Note: we don't do any special clipping work here. We could,
621 * but X will do it for us.
623 srcy
= YFLIP(srcXrb
, srcy
) - height
+ 1;
624 desty
= YFLIP(dstXrb
, desty
) - height
+ 1;
625 XCopyArea(dpy
, srcXrb
->pixmap
, dstXrb
->pixmap
, gc
,
626 srcx
, srcy
, width
, height
, destx
, desty
);
629 _swrast_CopyPixels(ctx
, srcx
, srcy
, width
, height
, destx
, desty
, type
);
637 * Every driver should implement a GetString function in order to
638 * return a meaningful GL_RENDERER string.
640 static const GLubyte
*
641 get_string( struct gl_context
*ctx
, GLenum name
)
646 return (const GLubyte
*) "Mesa X11";
656 * We implement the glEnable function only because we care about
657 * dither enable/disable.
660 enable( struct gl_context
*ctx
, GLenum pname
, GLboolean state
)
662 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
667 xmesa
->pixelformat
= xmesa
->xm_visual
->dithered_pf
;
669 xmesa
->pixelformat
= xmesa
->xm_visual
->undithered_pf
;
672 ; /* silence compiler warning */
678 * Called when the driver should update its state, based on the new_state
682 xmesa_update_state( struct gl_context
*ctx
, GLbitfield new_state
)
684 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
686 /* Propagate statechange information to swrast and swrast_setup
687 * modules. The X11 driver has no internal GL-dependent state.
689 _swrast_InvalidateState( ctx
, new_state
);
690 _tnl_InvalidateState( ctx
, new_state
);
691 _vbo_InvalidateState( ctx
, new_state
);
692 _swsetup_InvalidateState( ctx
, new_state
);
694 if (_mesa_is_user_fbo(ctx
->DrawBuffer
))
698 * GL_DITHER, GL_READ/DRAW_BUFFER, buffer binding state, etc. effect
699 * renderbuffer span/clear funcs.
700 * Check _NEW_COLOR to detect dither enable/disable.
702 if (new_state
& (_NEW_COLOR
| _NEW_BUFFERS
)) {
703 XMesaBuffer xmbuf
= XMESA_BUFFER(ctx
->DrawBuffer
);
704 struct xmesa_renderbuffer
*front_xrb
, *back_xrb
;
706 front_xrb
= xmbuf
->frontxrb
;
708 front_xrb
->clearFunc
= clear_pixmap
;
711 back_xrb
= xmbuf
->backxrb
;
713 if (xmbuf
->backxrb
->pixmap
) {
714 back_xrb
->clearFunc
= clear_pixmap
;
717 switch (xmesa
->xm_visual
->BitsPerPixel
) {
719 back_xrb
->clearFunc
= clear_16bit_ximage
;
722 back_xrb
->clearFunc
= clear_24bit_ximage
;
725 back_xrb
->clearFunc
= clear_32bit_ximage
;
728 back_xrb
->clearFunc
= clear_nbit_ximage
;
738 * Called by glViewport.
739 * This is a good time for us to poll the current X window size and adjust
740 * our renderbuffers to match the current window size.
741 * Remember, we have no opportunity to respond to conventional
742 * X Resize/StructureNotify events since the X driver has no event loop.
744 * Note that this trick isn't fool-proof. If the application never calls
745 * glViewport, our notion of the current window size may be incorrect.
746 * That problem led to the GLX_MESA_resize_buffers extension.
749 xmesa_viewport(struct gl_context
*ctx
)
751 XMesaContext xmctx
= XMESA_CONTEXT(ctx
);
752 XMesaBuffer xmdrawbuf
= XMESA_BUFFER(ctx
->WinSysDrawBuffer
);
753 XMesaBuffer xmreadbuf
= XMESA_BUFFER(ctx
->WinSysReadBuffer
);
754 xmesa_check_and_update_buffer_size(xmctx
, xmdrawbuf
);
755 xmesa_check_and_update_buffer_size(xmctx
, xmreadbuf
);
759 #if ENABLE_EXT_timer_query
762 * The GL_EXT_timer_query extension is not enabled for the XServer
763 * indirect renderer. Not sure about how/if wrapping of gettimeofday()
767 struct xmesa_query_object
769 struct gl_query_object Base
;
770 struct timeval StartTime
;
774 static struct gl_query_object
*
775 xmesa_new_query_object(struct gl_context
*ctx
, GLuint id
)
777 struct xmesa_query_object
*q
= CALLOC_STRUCT(xmesa_query_object
);
780 q
->Base
.Ready
= GL_TRUE
;
787 xmesa_begin_query(struct gl_context
*ctx
, struct gl_query_object
*q
)
789 if (q
->Target
== GL_TIME_ELAPSED_EXT
) {
790 struct xmesa_query_object
*xq
= (struct xmesa_query_object
*) q
;
791 (void) gettimeofday(&xq
->StartTime
, NULL
);
797 * Return the difference between the two given times in microseconds.
800 time_diff(const struct timeval
*t0
, const struct timeval
*t1
)
802 GLuint64EXT seconds0
= t0
->tv_sec
& 0xff; /* 0 .. 255 seconds */
803 GLuint64EXT seconds1
= t1
->tv_sec
& 0xff; /* 0 .. 255 seconds */
804 GLuint64EXT nanosec0
= (seconds0
* 1000000 + t0
->tv_usec
) * 1000;
805 GLuint64EXT nanosec1
= (seconds1
* 1000000 + t1
->tv_usec
) * 1000;
806 return nanosec1
- nanosec0
;
811 xmesa_end_query(struct gl_context
*ctx
, struct gl_query_object
*q
)
813 if (q
->Target
== GL_TIME_ELAPSED_EXT
) {
814 struct xmesa_query_object
*xq
= (struct xmesa_query_object
*) q
;
815 struct timeval endTime
;
816 (void) gettimeofday(&endTime
, NULL
);
817 /* result is in nanoseconds! */
818 q
->Result
= time_diff(&xq
->StartTime
, &endTime
);
823 #endif /* ENABLE_timer_query */
827 * Initialize the device driver function table with the functions
828 * we implement in this driver.
831 xmesa_init_driver_functions( XMesaVisual xmvisual
,
832 struct dd_function_table
*driver
)
834 driver
->GetString
= get_string
;
835 driver
->UpdateState
= xmesa_update_state
;
836 driver
->Flush
= finish_or_flush
;
837 driver
->Finish
= finish_or_flush
;
838 driver
->ColorMask
= color_mask
;
839 driver
->Enable
= enable
;
840 driver
->Viewport
= xmesa_viewport
;
841 if (TEST_META_FUNCS
) {
842 driver
->Clear
= _mesa_meta_Clear
;
843 driver
->CopyPixels
= _mesa_meta_CopyPixels
;
844 driver
->BlitFramebuffer
= _mesa_meta_BlitFramebuffer
;
845 driver
->DrawPixels
= _mesa_meta_DrawPixels
;
846 driver
->Bitmap
= _mesa_meta_Bitmap
;
849 driver
->Clear
= clear_buffers
;
850 driver
->CopyPixels
= xmesa_CopyPixels
;
851 if (xmvisual
->undithered_pf
== PF_8R8G8B
&&
852 xmvisual
->dithered_pf
== PF_8R8G8B
&&
853 xmvisual
->BitsPerPixel
== 32) {
854 driver
->DrawPixels
= xmesa_DrawPixels_8R8G8B
;
856 else if (xmvisual
->undithered_pf
== PF_5R6G5B
) {
857 driver
->DrawPixels
= xmesa_DrawPixels_5R6G5B
;
861 driver
->MapRenderbuffer
= xmesa_MapRenderbuffer
;
862 driver
->UnmapRenderbuffer
= xmesa_UnmapRenderbuffer
;
864 driver
->GenerateMipmap
= _mesa_generate_mipmap
;
866 #if ENABLE_EXT_timer_query
867 driver
->NewQueryObject
= xmesa_new_query_object
;
868 driver
->BeginQuery
= xmesa_begin_query
;
869 driver
->EndQuery
= xmesa_end_query
;
874 #define XMESA_NEW_POINT (_NEW_POINT | \
876 _SWRAST_NEW_RASTERMASK)
878 #define XMESA_NEW_LINE (_NEW_LINE | \
883 _SWRAST_NEW_RASTERMASK)
885 #define XMESA_NEW_TRIANGLE (_NEW_POLYGON | \
890 _SWRAST_NEW_RASTERMASK)
894 * Extend the software rasterizer with our line/point/triangle
896 * Called during context creation only.
898 void xmesa_register_swrast_functions( struct gl_context
*ctx
)
900 SWcontext
*swrast
= SWRAST_CONTEXT( ctx
);
902 swrast
->choose_point
= xmesa_choose_point
;
903 swrast
->choose_line
= xmesa_choose_line
;
904 swrast
->choose_triangle
= xmesa_choose_triangle
;
906 /* XXX these lines have no net effect. Remove??? */
907 swrast
->InvalidatePointMask
|= XMESA_NEW_POINT
;
908 swrast
->InvalidateLineMask
|= XMESA_NEW_LINE
;
909 swrast
->InvalidateTriangleMask
|= XMESA_NEW_TRIANGLE
;