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"
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"
53 #include "tnl/t_context.h"
54 #include "drivers/common/meta.h"
60 * Dithering kernels and lookup tables.
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
,
70 const short xmesa_HPCR_DRGB
[3][2][16] = {
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}
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}
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}
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
94 finish_or_flush( struct gl_context
*ctx
)
96 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
98 _glthread_LOCK_MUTEX(_xmesa_lock
);
99 XSync( xmesa
->display
, False
);
100 _glthread_UNLOCK_MUTEX(_xmesa_lock
);
106 clear_color( struct gl_context
*ctx
, const GLfloat color
[4] )
108 if (ctx
->DrawBuffer
->Name
== 0) {
109 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
110 XMesaBuffer xmbuf
= XMESA_BUFFER(ctx
->DrawBuffer
);
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
,
125 _glthread_UNLOCK_MUTEX(_xmesa_lock
);
131 /* Implements glColorMask() */
133 color_mask(struct gl_context
*ctx
,
134 GLboolean rmask
, GLboolean gmask
, GLboolean bmask
, GLboolean amask
)
136 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
138 const int xclass
= xmesa
->xm_visual
->visualType
;
141 if (ctx
->DrawBuffer
->Name
!= 0)
144 xmbuf
= XMESA_BUFFER(ctx
->DrawBuffer
);
146 if (xclass
== GLX_TRUE_COLOR
|| xclass
== GLX_DIRECT_COLOR
) {
148 if (rmask
&& gmask
&& bmask
) {
149 m
= ((unsigned long)~0L);
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
);
157 XMesaSetPlaneMask( xmesa
->display
, xmbuf
->cleargc
, m
);
163 /**********************************************************************/
164 /*** glClear implementations ***/
165 /**********************************************************************/
169 * Clear the front or back color buffer, if it's implemented with a pixmap.
172 clear_pixmap(struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
173 GLint x
, GLint y
, GLint width
, GLint height
)
175 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
176 XMesaBuffer xmbuf
= XMESA_BUFFER(ctx
->DrawBuffer
);
181 assert(xmesa
->display
);
183 assert(xmbuf
->cleargc
);
185 XMesaFillRectangle( xmesa
->display
, xrb
->pixmap
, xmbuf
->cleargc
,
186 x
, xrb
->Base
.Height
- y
- height
,
192 clear_8bit_ximage( struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
193 GLint x
, GLint y
, GLint width
, GLint height
)
195 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
197 for (i
= 0; i
< height
; i
++) {
198 GLubyte
*ptr
= PIXEL_ADDR1(xrb
, x
, y
+ i
);
199 memset( ptr
, xmesa
->clearpixel
, width
);
205 clear_HPCR_ximage( struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
206 GLint x
, GLint y
, GLint width
, GLint height
)
208 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
210 for (i
= y
; i
< y
+ height
; i
++) {
211 GLubyte
*ptr
= PIXEL_ADDR1( xrb
, x
, i
);
213 const GLubyte
*sptr
= xmesa
->xm_visual
->hpcr_clear_ximage_pattern
[0];
217 for (j
= x
; j
< x
+ width
; j
++) {
226 clear_16bit_ximage( struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
227 GLint x
, GLint y
, GLint width
, GLint height
)
229 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
230 GLuint pixel
= (GLuint
) xmesa
->clearpixel
;
233 if (xmesa
->swapbytes
) {
234 pixel
= ((pixel
>> 8) & 0x00ff) | ((pixel
<< 8) & 0xff00);
237 for (j
= 0; j
< height
; j
++) {
238 GLushort
*ptr2
= PIXEL_ADDR2(xrb
, x
, y
+ j
);
239 for (i
= 0; i
< width
; i
++) {
246 /* Optimized code provided by Nozomi Ytow <noz@xfree86.org> */
248 clear_24bit_ximage(struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
249 GLint x
, GLint y
, GLint width
, GLint height
)
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];
256 if (r
== g
&& g
== b
) {
257 /* same value for all three components (gray) */
259 for (j
= 0; j
< height
; j
++) {
260 bgr_t
*ptr3
= PIXEL_ADDR3(xrb
, x
, y
+ j
);
261 memset(ptr3
, r
, 3 * width
);
265 /* non-gray clear color */
267 for (j
= 0; j
< height
; j
++) {
268 bgr_t
*ptr3
= PIXEL_ADDR3(xrb
, x
, y
+ j
);
269 for (i
= 0; i
< width
; i
++) {
281 clear_32bit_ximage(struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
282 GLint x
, GLint y
, GLint width
, GLint height
)
284 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
285 register GLuint pixel
= (GLuint
) xmesa
->clearpixel
;
290 if (xmesa
->swapbytes
) {
291 pixel
= ((pixel
>> 24) & 0x000000ff)
292 | ((pixel
>> 8) & 0x0000ff00)
293 | ((pixel
<< 8) & 0x00ff0000)
294 | ((pixel
<< 24) & 0xff000000);
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
;
303 memset(ptr4
, pixel
, 4 * n
);
307 for (i
= 0; i
< n
; i
++)
312 /* clearing scissored region */
314 for (j
= 0; j
< height
; j
++) {
315 GLuint
*ptr4
= PIXEL_ADDR4(xrb
, x
, y
+ j
);
316 for (i
= 0; i
< width
; i
++) {
325 clear_nbit_ximage(struct gl_context
*ctx
, struct xmesa_renderbuffer
*xrb
,
326 GLint x
, GLint y
, GLint width
, GLint height
)
328 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
329 XMesaImage
*img
= xrb
->ximage
;
332 /* TODO: optimize this */
334 for (j
= 0; j
< height
; j
++) {
335 for (i
= 0; i
< width
; i
++) {
336 XMesaPutPixel(img
, x
+i
, y
-j
, xmesa
->clearpixel
);
344 clear_buffers(struct gl_context
*ctx
, GLbitfield buffers
)
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
;
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
;
367 /* we can't directly clear an alpha-wrapped color buffer */
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
;
383 _swrast_Clear(ctx
, buffers
);
387 /* XXX these functions haven't been tested in the Xserver environment */
391 * Check if we can do an optimized glDrawPixels into an 8R8G8B visual.
394 can_do_DrawPixels_8R8G8B(struct gl_context
*ctx
, GLenum format
, GLenum type
)
396 if (format
== GL_BGRA
&&
397 type
== GL_UNSIGNED_BYTE
&&
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
);
405 if (swrast
->NewState
)
406 _swrast_validate_derived( ctx
);
408 if ((swrast
->_RasterMask
& ~CLIP_BIT
) == 0) /* no blend, z-test, etc */ {
409 struct gl_renderbuffer
*rb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[0];
411 struct xmesa_renderbuffer
*xrb
= xmesa_renderbuffer(rb
->Wrapped
);
413 xrb
->pixmap
&& /* drawing to pixmap or window */
414 _mesa_get_format_bits(xrb
->Base
.Format
, GL_ALPHA_BITS
) == 0) {
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.
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
)
436 if (can_do_DrawPixels_8R8G8B(ctx
, format
, type
)) {
437 const SWcontext
*swrast
= SWRAST_CONTEXT( ctx
);
438 struct gl_pixelstore_attrib clippedUnpack
= *unpack
;
444 if (swrast
->NewState
)
445 _swrast_validate_derived( ctx
);
447 if (unpack
->BufferObj
->Name
) {
448 /* unpack from PBO */
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)");
456 buf
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
,
457 GL_PIXEL_UNPACK_BUFFER_EXT
,
461 /* buffer is already mapped - that's an error */
462 _mesa_error(ctx
, GL_INVALID_OPERATION
,
463 "glDrawPixels(PBO is mapped)");
466 pixels
= ADD_POINTERS(buf
, pixels
);
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
;
481 ASSERT(xmesa
->xm_visual
->dithered_pf
== PF_8R8G8B
);
482 ASSERT(xmesa
->xm_visual
->undithered_pf
== PF_8R8G8B
);
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.
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;
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
);
509 if (unpack
->BufferObj
->Name
) {
510 ctx
->Driver
.UnmapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
515 /* software fallback */
516 _swrast_DrawPixels(ctx
, x
, y
, width
, height
,
517 format
, type
, unpack
, pixels
);
524 * Check if we can do an optimized glDrawPixels into an 5R6G5B visual.
527 can_do_DrawPixels_5R6G5B(struct gl_context
*ctx
, GLenum format
, GLenum type
)
529 if (format
== GL_RGB
&&
530 type
== GL_UNSIGNED_SHORT_5_6_5
&&
531 !ctx
->Color
.DitherFlag
&& /* no dithering */
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
);
539 if (swrast
->NewState
)
540 _swrast_validate_derived( ctx
);
542 if ((swrast
->_RasterMask
& ~CLIP_BIT
) == 0) /* no blend, z-test, etc */ {
543 struct gl_renderbuffer
*rb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[0];
545 struct xmesa_renderbuffer
*xrb
= xmesa_renderbuffer(rb
->Wrapped
);
547 xrb
->pixmap
&& /* drawing to pixmap or window */
548 _mesa_get_format_bits(xrb
->Base
.Format
, GL_ALPHA_BITS
) == 0) {
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.
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
)
571 if (can_do_DrawPixels_5R6G5B(ctx
, format
, type
)) {
572 const SWcontext
*swrast
= SWRAST_CONTEXT( ctx
);
573 struct gl_pixelstore_attrib clippedUnpack
= *unpack
;
579 if (swrast
->NewState
)
580 _swrast_validate_derived( ctx
);
582 if (unpack
->BufferObj
->Name
) {
583 /* unpack from PBO */
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)");
591 buf
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
,
592 GL_PIXEL_UNPACK_BUFFER_EXT
,
596 /* buffer is already mapped - that's an error */
597 _mesa_error(ctx
, GL_INVALID_OPERATION
,
598 "glDrawPixels(PBO is mapped)");
601 pixels
= ADD_POINTERS(buf
, pixels
);
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
;
616 ASSERT(xmesa
->xm_visual
->undithered_pf
== PF_5R6G5B
);
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.
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;
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
);
643 if (unpack
->BufferObj
->Name
) {
644 ctx
->Driver
.UnmapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
649 /* software fallback */
650 _swrast_DrawPixels(ctx
, x
, y
, width
, height
,
651 format
, type
, unpack
, pixels
);
657 * Determine if we can do an optimized glCopyPixels.
660 can_do_CopyPixels(struct gl_context
*ctx
, GLenum type
)
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
);
672 if (swrast
->NewState
)
673 _swrast_validate_derived( ctx
);
675 if ((swrast
->_RasterMask
& ~CLIP_BIT
) == 0x0 &&
677 ctx
->ReadBuffer
->_ColorReadBuffer
&&
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
) {
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.
699 xmesa_CopyPixels( struct gl_context
*ctx
,
700 GLint srcx
, GLint srcy
, GLsizei width
, GLsizei height
,
701 GLint destx
, GLint desty
, GLenum type
)
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
);
716 /* Note: we don't do any special clipping work here. We could,
717 * but X will do it for us.
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
);
725 _swrast_CopyPixels(ctx
, srcx
, srcy
, width
, height
, destx
, desty
, type
);
733 * Every driver should implement a GetString function in order to
734 * return a meaningful GL_RENDERER string.
736 static const GLubyte
*
737 get_string( struct gl_context
*ctx
, GLenum name
)
742 return (const GLubyte
*) "Mesa X11";
752 * We implement the glEnable function only because we care about
753 * dither enable/disable.
756 enable( struct gl_context
*ctx
, GLenum pname
, GLboolean state
)
758 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
763 xmesa
->pixelformat
= xmesa
->xm_visual
->dithered_pf
;
765 xmesa
->pixelformat
= xmesa
->xm_visual
->undithered_pf
;
768 ; /* silence compiler warning */
774 clear_color_HPCR_ximage( struct gl_context
*ctx
, const GLfloat color
[4] )
777 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
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]);
784 if (color
[0] == 0.0 && color
[1] == 0.0 && color
[2] == 0.0) {
786 memset( xmesa
->xm_visual
->hpcr_clear_ximage_pattern
, 0x0 ,
787 sizeof(xmesa
->xm_visual
->hpcr_clear_ximage_pattern
));
790 /* build clear pattern */
791 for (i
=0; i
<16; i
++) {
792 xmesa
->xm_visual
->hpcr_clear_ximage_pattern
[0][i
] =
794 xmesa
->clearcolor
[0],
795 xmesa
->clearcolor
[1],
796 xmesa
->clearcolor
[2]);
797 xmesa
->xm_visual
->hpcr_clear_ximage_pattern
[1][i
] =
799 xmesa
->clearcolor
[0],
800 xmesa
->clearcolor
[1],
801 xmesa
->clearcolor
[2]);
808 clear_color_HPCR_pixmap( struct gl_context
*ctx
, const GLfloat color
[4] )
811 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
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]);
818 if (color
[0] == 0.0 && color
[1] == 0.0 && color
[2] == 0.0) {
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);
826 for (i
=0; i
<16; i
++) {
827 XMesaPutPixel(xmesa
->xm_visual
->hpcr_clear_ximage
, i
, 0,
829 xmesa
->clearcolor
[0],
830 xmesa
->clearcolor
[1],
831 xmesa
->clearcolor
[2]));
832 XMesaPutPixel(xmesa
->xm_visual
->hpcr_clear_ximage
, i
, 1,
834 xmesa
->clearcolor
[0],
835 xmesa
->clearcolor
[1],
836 xmesa
->clearcolor
[2]));
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);
848 * Called when the driver should update its state, based on the new_state
852 xmesa_update_state( struct gl_context
*ctx
, GLbitfield new_state
)
854 const XMesaContext xmesa
= XMESA_CONTEXT(ctx
);
856 /* Propagate statechange information to swrast and swrast_setup
857 * modules. The X11 driver has no internal GL-dependent state.
859 _swrast_InvalidateState( ctx
, new_state
);
860 _tnl_InvalidateState( ctx
, new_state
);
861 _vbo_InvalidateState( ctx
, new_state
);
862 _swsetup_InvalidateState( ctx
, new_state
);
864 if (ctx
->DrawBuffer
->Name
!= 0)
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.
872 if (new_state
& (_NEW_COLOR
| _NEW_BUFFERS
)) {
873 XMesaBuffer xmbuf
= XMESA_BUFFER(ctx
->DrawBuffer
);
874 struct xmesa_renderbuffer
*front_xrb
, *back_xrb
;
876 front_xrb
= xmbuf
->frontxrb
;
878 xmesa_set_renderbuffer_funcs(front_xrb
, xmesa
->pixelformat
,
879 xmesa
->xm_visual
->BitsPerPixel
);
880 front_xrb
->clearFunc
= clear_pixmap
;
883 back_xrb
= xmbuf
->backxrb
;
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
;
891 switch (xmesa
->xm_visual
->BitsPerPixel
) {
893 if (xmesa
->xm_visual
->hpcr_clear_flag
) {
894 back_xrb
->clearFunc
= clear_HPCR_ximage
;
897 back_xrb
->clearFunc
= clear_8bit_ximage
;
901 back_xrb
->clearFunc
= clear_16bit_ximage
;
904 back_xrb
->clearFunc
= clear_24bit_ximage
;
907 back_xrb
->clearFunc
= clear_32bit_ximage
;
910 back_xrb
->clearFunc
= clear_nbit_ximage
;
917 if (xmesa
->xm_visual
->hpcr_clear_flag
) {
918 /* this depends on whether we're drawing to the front or back buffer */
922 ctx
->Driver
.ClearColor
= clear_color_HPCR_pixmap
;
925 ctx
->Driver
.ClearColor
= clear_color_HPCR_ximage
;
928 (void) clear_color_HPCR_pixmap
;
929 (void) clear_color_HPCR_ximage
;
937 * In SW, we don't really compress GL_COMPRESSED_RGB[A] textures!
940 choose_tex_format( struct gl_context
*ctx
, GLint internalFormat
,
941 GLenum format
, GLenum type
)
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
;
949 return _mesa_choose_tex_format(ctx
, internalFormat
, format
, type
);
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.
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.
966 xmesa_viewport(struct gl_context
*ctx
, GLint x
, GLint y
, GLsizei w
, GLsizei h
)
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
);
980 #if ENABLE_EXT_timer_query
983 * The GL_EXT_timer_query extension is not enabled for the XServer
984 * indirect renderer. Not sure about how/if wrapping of gettimeofday()
988 struct xmesa_query_object
990 struct gl_query_object Base
;
991 struct timeval StartTime
;
995 static struct gl_query_object
*
996 xmesa_new_query_object(struct gl_context
*ctx
, GLuint id
)
998 struct xmesa_query_object
*q
= CALLOC_STRUCT(xmesa_query_object
);
1001 q
->Base
.Ready
= GL_TRUE
;
1008 xmesa_begin_query(struct gl_context
*ctx
, struct gl_query_object
*q
)
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
);
1018 * Return the difference between the two given times in microseconds.
1021 #define suseconds_t unsigned int
1024 time_diff(const struct timeval
*t0
, const struct timeval
*t1
)
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
;
1035 xmesa_end_query(struct gl_context
*ctx
, struct gl_query_object
*q
)
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
);
1047 #endif /* ENABLE_timer_query */
1051 * Initialize the device driver function table with the functions
1052 * we implement in this driver.
1055 xmesa_init_driver_functions( XMesaVisual xmvisual
,
1056 struct dd_function_table
*driver
)
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
;
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
;
1082 else if (xmvisual
->undithered_pf
== PF_5R6G5B
) {
1083 driver
->DrawPixels
= xmesa_DrawPixels_5R6G5B
;
1087 #if ENABLE_EXT_texure_compression_s3tc
1088 driver
->ChooseTextureFormat
= choose_tex_format
;
1090 (void) choose_tex_format
;
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
;
1101 #define XMESA_NEW_POINT (_NEW_POINT | \
1103 _SWRAST_NEW_RASTERMASK)
1105 #define XMESA_NEW_LINE (_NEW_LINE | \
1110 _SWRAST_NEW_RASTERMASK)
1112 #define XMESA_NEW_TRIANGLE (_NEW_POLYGON | \
1117 _SWRAST_NEW_RASTERMASK)
1121 * Extend the software rasterizer with our line/point/triangle
1123 * Called during context creation only.
1125 void xmesa_register_swrast_functions( struct gl_context
*ctx
)
1127 SWcontext
*swrast
= SWRAST_CONTEXT( ctx
);
1129 swrast
->choose_point
= xmesa_choose_point
;
1130 swrast
->choose_line
= xmesa_choose_line
;
1131 swrast
->choose_triangle
= xmesa_choose_triangle
;
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
;