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.
27 * OpenGL (Mesa) interface for fbdev.
28 * For info about fbdev:
29 * http://www.tldp.org/HOWTO/Framebuffer-HOWTO.html
32 * Colours 640x400 640x480 800x600 1024x768 1152x864 1280x1024 1600x1200
33 * --------+--------------------------------------------------------------
34 * 4 bits | ? ? 0x302 ? ? ? ?
35 * 8 bits | 0x300 0x301 0x303 0x305 0x161 0x307 0x31C
36 * 15 bits | ? 0x310 0x313 0x316 0x162 0x319 0x31D
37 * 16 bits | ? 0x311 0x314 0x317 0x163 0x31A 0x31E
38 * 24 bits | ? 0x312 0x315 0x318 ? 0x31B 0x31F
39 * 32 bits | ? ? ? ? 0x164 ?
42 #ifdef USE_GLFBDEV_DRIVER
46 #include "GL/glfbdev.h"
49 #include "extensions.h"
51 #include "framebuffer.h"
53 #include "renderbuffer.h"
54 #include "texformat.h"
57 #include "array_cache/acache.h"
58 #include "swrast/swrast.h"
59 #include "swrast_setup/swrast_setup.h"
61 #include "tnl/t_context.h"
62 #include "tnl/t_pipeline.h"
63 #include "drivers/common/driverfuncs.h"
74 * Derived from Mesa's GLvisual class.
76 struct GLFBDevVisualRec
{
77 GLvisual glvisual
; /* base class */
78 struct fb_fix_screeninfo fix
;
79 struct fb_var_screeninfo var
;
84 * Derived from Mesa's GLframebuffer class.
86 struct GLFBDevBufferRec
{
87 GLframebuffer glframebuffer
; /* base class */
88 GLFBDevVisualPtr visual
;
89 struct fb_fix_screeninfo fix
;
90 struct fb_var_screeninfo var
;
91 size_t size
; /* color buffer size in bytes */
96 * Derived from Mesa's GLcontext class.
98 struct GLFBDevContextRec
{
99 GLcontext glcontext
; /* base class */
100 GLFBDevVisualPtr visual
;
101 GLFBDevBufferPtr drawBuffer
;
102 GLFBDevBufferPtr readBuffer
;
103 GLFBDevBufferPtr curBuffer
;
107 * Derived from Mesa's gl_renderbuffer class.
109 struct GLFBDevRenderbufferRec
{
110 struct gl_renderbuffer Base
;
111 GLubyte
*bottom
; /* pointer to last row */
112 GLuint rowStride
; /* in bytes */
113 GLboolean mallocedBuffer
;
118 #define GLFBDEV_CONTEXT(CTX) ((GLFBDevContextPtr) (CTX))
119 #define GLFBDEV_BUFFER(BUF) ((GLFBDevBufferPtr) (BUF))
122 /**********************************************************************/
123 /* Internal device driver functions */
124 /**********************************************************************/
127 static const GLubyte
*
128 get_string(GLcontext
*ctx
, GLenum pname
)
133 return (const GLubyte
*) "Mesa glfbdev";
141 update_state( GLcontext
*ctx
, GLuint new_state
)
143 /* not much to do here - pass it on */
144 _swrast_InvalidateState( ctx
, new_state
);
145 _swsetup_InvalidateState( ctx
, new_state
);
146 _ac_InvalidateState( ctx
, new_state
);
147 _tnl_InvalidateState( ctx
, new_state
);
152 get_buffer_size( GLframebuffer
*buffer
, GLuint
*width
, GLuint
*height
)
154 const GLFBDevBufferPtr fbdevbuffer
= GLFBDEV_BUFFER(buffer
);
155 *width
= fbdevbuffer
->var
.xres_virtual
;
156 *height
= fbdevbuffer
->var
.yres_virtual
;
161 viewport(GLcontext
*ctx
, GLint x
, GLint y
, GLsizei w
, GLsizei h
)
163 /* poll for window size change and realloc software Z/stencil/etc if needed */
164 _mesa_ResizeBuffersMESA();
169 * Generate code for span functions.
173 #define NAME(PREFIX) PREFIX##_B8G8R8
174 #define RB_TYPE GLubyte
176 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
177 #define INIT_PIXEL_PTR(P, X, Y) \
178 GLubyte *P = frb->bottom - (Y) * frb->rowStride + (X) * 3
179 #define INC_PIXEL_PTR(P) P += 3
180 #define STORE_PIXEL(DST, X, Y, VALUE) \
181 DST[0] = VALUE[BCOMP]; \
182 DST[1] = VALUE[GCOMP]; \
183 DST[2] = VALUE[RCOMP]
184 #define FETCH_PIXEL(DST, SRC) \
185 DST[RCOMP] = SRC[2]; \
186 DST[GCOMP] = SRC[1]; \
187 DST[BCOMP] = SRC[0]; \
188 DST[ACOMP] = CHAN_MAX
190 #include "swrast/s_spantemp.h"
194 #define NAME(PREFIX) PREFIX##_B8G8R8A8
195 #define RB_TYPE GLubyte
197 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
198 #define INIT_PIXEL_PTR(P, X, Y) \
199 GLubyte *P = frb->bottom - (Y) * frb->rowStride + (X) * 4
200 #define INC_PIXEL_PTR(P) P += 4
201 #define STORE_PIXEL(DST, X, Y, VALUE) \
202 DST[0] = VALUE[BCOMP]; \
203 DST[1] = VALUE[GCOMP]; \
204 DST[2] = VALUE[RCOMP]; \
205 DST[3] = VALUE[ACOMP]
206 #define FETCH_PIXEL(DST, SRC) \
207 DST[RCOMP] = SRC[2]; \
208 DST[GCOMP] = SRC[1]; \
209 DST[BCOMP] = SRC[0]; \
212 #include "swrast/s_spantemp.h"
215 /* 16-bit BGR (XXX implement dithering someday) */
216 #define NAME(PREFIX) PREFIX##_B5G6R5
217 #define RB_TYPE GLubyte
219 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
220 #define INIT_PIXEL_PTR(P, X, Y) \
221 GLushort *P = (GLushort *) (frb->bottom - (Y) * frb->rowStride + (X) * 2)
222 #define INC_PIXEL_PTR(P) P += 1
223 #define STORE_PIXEL(DST, X, Y, VALUE) \
224 DST[0] = ( (((VALUE[RCOMP]) & 0xf8) << 8) | (((VALUE[GCOMP]) & 0xfc) << 3) | ((VALUE[BCOMP]) >> 3) )
225 #define FETCH_PIXEL(DST, SRC) \
226 DST[RCOMP] = ( (((SRC[0]) >> 8) & 0xf8) | (((SRC[0]) >> 11) & 0x7) ); \
227 DST[GCOMP] = ( (((SRC[0]) >> 3) & 0xfc) | (((SRC[0]) >> 5) & 0x3) ); \
228 DST[BCOMP] = ( (((SRC[0]) << 3) & 0xf8) | (((SRC[0]) ) & 0x7) ); \
229 DST[ACOMP] = CHAN_MAX
231 #include "swrast/s_spantemp.h"
234 /* 15-bit BGR (XXX implement dithering someday) */
235 #define NAME(PREFIX) PREFIX##_B5G5R5
236 #define RB_TYPE GLubyte
238 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
239 #define INIT_PIXEL_PTR(P, X, Y) \
240 GLushort *P = (GLushort *) (frb->bottom - (Y) * frb->rowStride + (X) * 2)
241 #define INC_PIXEL_PTR(P) P += 1
242 #define STORE_PIXEL(DST, X, Y, VALUE) \
243 DST[0] = ( (((VALUE[RCOMP]) & 0xf8) << 7) | (((VALUE[GCOMP]) & 0xf8) << 2) | ((VALUE[BCOMP]) >> 3) )
244 #define FETCH_PIXEL(DST, SRC) \
245 DST[RCOMP] = ( (((SRC[0]) >> 7) & 0xf8) | (((SRC[0]) >> 10) & 0x7) ); \
246 DST[GCOMP] = ( (((SRC[0]) >> 2) & 0xf8) | (((SRC[0]) >> 5) & 0x7) ); \
247 DST[BCOMP] = ( (((SRC[0]) << 3) & 0xf8) | (((SRC[0]) ) & 0x7) ); \
248 DST[ACOMP] = CHAN_MAX
250 #include "swrast/s_spantemp.h"
253 /* 8-bit color index */
254 #define NAME(PREFIX) PREFIX##_CI8
256 #define RB_TYPE GLubyte
258 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
259 #define INIT_PIXEL_PTR(P, X, Y) \
260 GLubyte *P = frb->bottom - (Y) * frb->rowStride + (X)
261 #define INC_PIXEL_PTR(P) P += 1
262 #define STORE_PIXEL(DST, X, Y, VALUE) \
264 #define FETCH_PIXEL(DST, SRC) \
267 #include "swrast/s_spantemp.h"
272 /**********************************************************************/
273 /* Public API functions */
274 /**********************************************************************/
278 glFBDevGetString( int str
)
282 return "Mesa Project";
283 case GLFBDEV_VERSION
:
292 glFBDevGetProcAddress( const char *procName
)
294 struct name_address
{
296 const GLFBDevProc func
;
298 static const struct name_address functions
[] = {
299 { "glFBDevGetString", (GLFBDevProc
) glFBDevGetString
},
300 { "glFBDevGetProcAddress", (GLFBDevProc
) glFBDevGetProcAddress
},
301 { "glFBDevCreateVisual", (GLFBDevProc
) glFBDevCreateVisual
},
302 { "glFBDevDestroyVisual", (GLFBDevProc
) glFBDevDestroyVisual
},
303 { "glFBDevGetVisualAttrib", (GLFBDevProc
) glFBDevGetVisualAttrib
},
304 { "glFBDevCreateBuffer", (GLFBDevProc
) glFBDevCreateBuffer
},
305 { "glFBDevDestroyBuffer", (GLFBDevProc
) glFBDevDestroyBuffer
},
306 { "glFBDevGetBufferAttrib", (GLFBDevProc
) glFBDevGetBufferAttrib
},
307 { "glFBDevGetCurrentDrawBuffer", (GLFBDevProc
) glFBDevGetCurrentDrawBuffer
},
308 { "glFBDevGetCurrentReadBuffer", (GLFBDevProc
) glFBDevGetCurrentReadBuffer
},
309 { "glFBDevSwapBuffers", (GLFBDevProc
) glFBDevSwapBuffers
},
310 { "glFBDevCreateContext", (GLFBDevProc
) glFBDevCreateContext
},
311 { "glFBDevDestroyContext", (GLFBDevProc
) glFBDevDestroyContext
},
312 { "glFBDevGetContextAttrib", (GLFBDevProc
) glFBDevGetContextAttrib
},
313 { "glFBDevGetCurrentContext", (GLFBDevProc
) glFBDevGetCurrentContext
},
314 { "glFBDevMakeCurrent", (GLFBDevProc
) glFBDevMakeCurrent
},
317 const struct name_address
*entry
;
318 for (entry
= functions
; entry
->name
; entry
++) {
319 if (_mesa_strcmp(entry
->name
, procName
) == 0) {
323 return _glapi_get_proc_address(procName
);
328 glFBDevCreateVisual( const struct fb_fix_screeninfo
*fixInfo
,
329 const struct fb_var_screeninfo
*varInfo
,
332 GLFBDevVisualPtr vis
;
334 GLboolean rgbFlag
= GL_TRUE
, dbFlag
= GL_FALSE
, stereoFlag
= GL_FALSE
;
335 GLint redBits
= 0, greenBits
= 0, blueBits
= 0, alphaBits
= 0;
336 GLint indexBits
= 0, depthBits
= 0, stencilBits
= 0;
337 GLint accumRedBits
= 0, accumGreenBits
= 0;
338 GLint accumBlueBits
= 0, accumAlphaBits
= 0;
339 GLint numSamples
= 0;
344 vis
= CALLOC_STRUCT(GLFBDevVisualRec
);
348 vis
->fix
= *fixInfo
; /* struct assignment */
349 vis
->var
= *varInfo
; /* struct assignment */
351 for (attrib
= attribs
; attrib
&& *attrib
!= GLFBDEV_NONE
; attrib
++) {
353 case GLFBDEV_DOUBLE_BUFFER
:
356 case GLFBDEV_COLOR_INDEX
:
359 case GLFBDEV_DEPTH_SIZE
:
360 depthBits
= attrib
[1];
363 case GLFBDEV_STENCIL_SIZE
:
364 stencilBits
= attrib
[1];
367 case GLFBDEV_ACCUM_SIZE
:
368 accumRedBits
= accumGreenBits
= accumBlueBits
= accumAlphaBits
373 /* ignored for now */
375 case GLFBDEV_MULTISAMPLE
:
376 numSamples
= attrib
[1];
380 /* unexpected token */
387 redBits
= varInfo
->red
.length
;
388 greenBits
= varInfo
->green
.length
;
389 blueBits
= varInfo
->blue
.length
;
390 alphaBits
= varInfo
->transp
.length
;
392 if ((fixInfo
->visual
== FB_VISUAL_TRUECOLOR
||
393 fixInfo
->visual
== FB_VISUAL_DIRECTCOLOR
)
394 && varInfo
->bits_per_pixel
== 24
395 && varInfo
->red
.offset
== 16
396 && varInfo
->green
.offset
== 8
397 && varInfo
->blue
.offset
== 0) {
398 vis
->pixelFormat
= PF_B8G8R8
;
400 else if ((fixInfo
->visual
== FB_VISUAL_TRUECOLOR
||
401 fixInfo
->visual
== FB_VISUAL_DIRECTCOLOR
)
402 && varInfo
->bits_per_pixel
== 32
403 && varInfo
->red
.offset
== 16
404 && varInfo
->green
.offset
== 8
405 && varInfo
->blue
.offset
== 0
406 && varInfo
->transp
.offset
== 24) {
407 vis
->pixelFormat
= PF_B8G8R8A8
;
409 else if ((fixInfo
->visual
== FB_VISUAL_TRUECOLOR
||
410 fixInfo
->visual
== FB_VISUAL_DIRECTCOLOR
)
411 && varInfo
->bits_per_pixel
== 16
412 && varInfo
->red
.offset
== 11
413 && varInfo
->green
.offset
== 5
414 && varInfo
->blue
.offset
== 0) {
415 vis
->pixelFormat
= PF_B5G6R5
;
417 else if ((fixInfo
->visual
== FB_VISUAL_TRUECOLOR
||
418 fixInfo
->visual
== FB_VISUAL_DIRECTCOLOR
)
419 && varInfo
->bits_per_pixel
== 16
420 && varInfo
->red
.offset
== 10
421 && varInfo
->green
.offset
== 5
422 && varInfo
->blue
.offset
== 0) {
423 vis
->pixelFormat
= PF_B5G5R5
;
426 _mesa_problem(NULL
, "Unsupported fbdev RGB visual/bitdepth!\n");
432 indexBits
= varInfo
->bits_per_pixel
;
433 if ((fixInfo
->visual
== FB_VISUAL_PSEUDOCOLOR
||
434 fixInfo
->visual
== FB_VISUAL_STATIC_PSEUDOCOLOR
)
435 && varInfo
->bits_per_pixel
== 8) {
436 vis
->pixelFormat
= PF_CI8
;
439 _mesa_problem(NULL
, "Unsupported fbdev CI visual/bitdepth!\n");
445 if (!_mesa_initialize_visual(&vis
->glvisual
, rgbFlag
, dbFlag
, stereoFlag
,
446 redBits
, greenBits
, blueBits
, alphaBits
,
447 indexBits
, depthBits
, stencilBits
,
448 accumRedBits
, accumGreenBits
,
449 accumBlueBits
, accumAlphaBits
,
451 /* something was invalid */
461 glFBDevDestroyVisual( GLFBDevVisualPtr visual
)
469 glFBDevGetVisualAttrib( const GLFBDevVisualPtr visual
, int attrib
)
479 delete_renderbuffer(struct gl_renderbuffer
*rb
)
481 struct GLFBDevRenderbufferRec
*frb
= (struct GLFBDevRenderbufferRec
*) rb
;
482 if (frb
->mallocedBuffer
) {
483 _mesa_free(frb
->Base
.Data
);
490 renderbuffer_storage(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
491 GLenum internalFormat
, GLuint width
, GLuint height
)
493 /* no-op: the renderbuffer storage is allocated just once when it's
494 * created. Never resized or reallocated.
500 static struct GLFBDevRenderbufferRec
*
501 new_glfbdev_renderbuffer(void *bufferStart
, const GLFBDevVisualPtr visual
)
503 struct GLFBDevRenderbufferRec
*rb
= CALLOC_STRUCT(GLFBDevRenderbufferRec
);
506 int pixelFormat
= visual
->pixelFormat
;
508 _mesa_init_renderbuffer(&rb
->Base
, name
);
510 rb
->Base
.Delete
= delete_renderbuffer
;
511 rb
->Base
.AllocStorage
= renderbuffer_storage
;
513 if (pixelFormat
== PF_B8G8R8
) {
514 rb
->Base
.GetRow
= get_row_B8G8R8
;
515 rb
->Base
.GetValues
= get_values_B8G8R8
;
516 rb
->Base
.PutRow
= put_row_B8G8R8
;
517 rb
->Base
.PutRowRGB
= put_row_rgb_B8G8R8
;
518 rb
->Base
.PutMonoRow
= put_mono_row_B8G8R8
;
519 rb
->Base
.PutValues
= put_values_B8G8R8
;
520 rb
->Base
.PutMonoValues
= put_mono_values_B8G8R8
;
522 else if (pixelFormat
== PF_B8G8R8A8
) {
523 rb
->Base
.GetRow
= get_row_B8G8R8A8
;
524 rb
->Base
.GetValues
= get_values_B8G8R8A8
;
525 rb
->Base
.PutRow
= put_row_B8G8R8A8
;
526 rb
->Base
.PutRowRGB
= put_row_rgb_B8G8R8A8
;
527 rb
->Base
.PutMonoRow
= put_mono_row_B8G8R8A8
;
528 rb
->Base
.PutValues
= put_values_B8G8R8A8
;
529 rb
->Base
.PutMonoValues
= put_mono_values_B8G8R8A8
;
531 else if (pixelFormat
== PF_B5G6R5
) {
532 rb
->Base
.GetRow
= get_row_B5G6R5
;
533 rb
->Base
.GetValues
= get_values_B5G6R5
;
534 rb
->Base
.PutRow
= put_row_B5G6R5
;
535 rb
->Base
.PutRowRGB
= put_row_rgb_B5G6R5
;
536 rb
->Base
.PutMonoRow
= put_mono_row_B5G6R5
;
537 rb
->Base
.PutValues
= put_values_B5G6R5
;
538 rb
->Base
.PutMonoValues
= put_mono_values_B5G6R5
;
540 else if (pixelFormat
== PF_B5G5R5
) {
541 rb
->Base
.GetRow
= get_row_B5G5R5
;
542 rb
->Base
.GetValues
= get_values_B5G5R5
;
543 rb
->Base
.PutRow
= put_row_B5G5R5
;
544 rb
->Base
.PutRowRGB
= put_row_rgb_B5G5R5
;
545 rb
->Base
.PutMonoRow
= put_mono_row_B5G5R5
;
546 rb
->Base
.PutValues
= put_values_B5G5R5
;
547 rb
->Base
.PutMonoValues
= put_mono_values_B5G5R5
;
549 else if (pixelFormat
== PF_CI8
) {
550 rb
->Base
.GetRow
= get_row_CI8
;
551 rb
->Base
.GetValues
= get_values_CI8
;
552 rb
->Base
.PutRow
= put_row_CI8
;
553 rb
->Base
.PutMonoRow
= put_mono_row_CI8
;
554 rb
->Base
.PutValues
= put_values_CI8
;
555 rb
->Base
.PutMonoValues
= put_mono_values_CI8
;
558 if (pixelFormat
== PF_CI8
) {
559 rb
->Base
.InternalFormat
= GL_COLOR_INDEX8_EXT
;
560 rb
->Base
._BaseFormat
= GL_COLOR_INDEX
;
563 rb
->Base
.InternalFormat
= GL_RGBA
;
564 rb
->Base
._BaseFormat
= GL_RGBA
;
566 rb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
567 rb
->Base
.Data
= bufferStart
;
569 rb
->rowStride
= visual
->var
.xres_virtual
* visual
->var
.bits_per_pixel
/ 8;
570 rb
->bottom
= (GLubyte
*) bufferStart
571 + (visual
->var
.yres_virtual
- 1) * rb
->rowStride
;
573 rb
->Base
.Width
= visual
->var
.xres
;
574 rb
->Base
.Height
= visual
->var
.yres
;
576 rb
->Base
.RedBits
= visual
->var
.red
.length
;
577 rb
->Base
.GreenBits
= visual
->var
.green
.length
;
578 rb
->Base
.BlueBits
= visual
->var
.blue
.length
;
579 rb
->Base
.AlphaBits
= visual
->var
.transp
.length
;
581 rb
->Base
.InternalFormat
= pixelFormat
;
587 glFBDevCreateBuffer( const struct fb_fix_screeninfo
*fixInfo
,
588 const struct fb_var_screeninfo
*varInfo
,
589 const GLFBDevVisualPtr visual
,
590 void *frontBuffer
, void *backBuffer
, size_t size
)
592 struct GLFBDevRenderbufferRec
*frontrb
, *backrb
;
593 GLFBDevBufferPtr buf
;
599 /* this is to update the visual if there was a resize and the
600 buffer is created again */
601 visual
->var
= *varInfo
;
602 visual
->fix
= *fixInfo
;
604 if (visual
->fix
.visual
!= fixInfo
->visual
||
605 visual
->fix
.type
!= fixInfo
->type
||
606 visual
->var
.bits_per_pixel
!= varInfo
->bits_per_pixel
||
607 visual
->var
.grayscale
!= varInfo
->grayscale
||
608 visual
->var
.red
.offset
!= varInfo
->red
.offset
||
609 visual
->var
.green
.offset
!= varInfo
->green
.offset
||
610 visual
->var
.blue
.offset
!= varInfo
->blue
.offset
||
611 visual
->var
.transp
.offset
!= varInfo
->transp
.offset
) {
612 /* visual mismatch! */
616 buf
= CALLOC_STRUCT(GLFBDevBufferRec
);
620 /* basic framebuffer setup */
621 _mesa_initialize_framebuffer(&buf
->glframebuffer
, &visual
->glvisual
);
622 /* add front renderbuffer */
623 frontrb
= new_glfbdev_renderbuffer(frontBuffer
, visual
);
624 _mesa_add_renderbuffer(&buf
->glframebuffer
, BUFFER_FRONT_LEFT
,
626 /* add back renderbuffer */
627 if (visual
->glvisual
.doubleBufferMode
) {
628 int malloced
= !backBuffer
;
630 /* malloc a back buffer */
631 backBuffer
= _mesa_malloc(size
);
633 _mesa_free_framebuffer_data(&buf
->glframebuffer
);
639 backrb
= new_glfbdev_renderbuffer(backBuffer
, visual
);
641 backrb
->mallocedBuffer
= GL_TRUE
;
643 _mesa_add_renderbuffer(&buf
->glframebuffer
, BUFFER_BACK_LEFT
,
646 /* add software renderbuffers */
647 _mesa_add_soft_renderbuffers(&buf
->glframebuffer
,
648 GL_FALSE
, /* color */
649 visual
->glvisual
.haveDepthBuffer
,
650 visual
->glvisual
.haveStencilBuffer
,
651 visual
->glvisual
.haveAccumBuffer
,
652 GL_FALSE
, /* alpha */
653 GL_FALSE
/* aux bufs */);
655 buf
->fix
= *fixInfo
; /* struct assignment */
656 buf
->var
= *varInfo
; /* struct assignment */
657 buf
->visual
= visual
; /* ptr assignment */
659 buf
->bytesPerPixel
= visual
->var
.bits_per_pixel
/ 8;
666 glFBDevDestroyBuffer( GLFBDevBufferPtr buffer
)
669 /* check if destroying the current buffer */
670 GLFBDevBufferPtr curDraw
= glFBDevGetCurrentDrawBuffer();
671 GLFBDevBufferPtr curRead
= glFBDevGetCurrentReadBuffer();
672 if (buffer
== curDraw
|| buffer
== curRead
) {
673 glFBDevMakeCurrent( NULL
, NULL
, NULL
);
675 /* free the software depth, stencil, accum buffers */
676 _mesa_free_framebuffer_data(&buffer
->glframebuffer
);
683 glFBDevGetBufferAttrib( const GLFBDevBufferPtr buffer
, int attrib
)
692 glFBDevGetCurrentDrawBuffer( void )
694 GLFBDevContextPtr fbdevctx
= glFBDevGetCurrentContext();
696 return fbdevctx
->drawBuffer
;
703 glFBDevGetCurrentReadBuffer( void )
705 GLFBDevContextPtr fbdevctx
= glFBDevGetCurrentContext();
707 return fbdevctx
->readBuffer
;
714 glFBDevSwapBuffers( GLFBDevBufferPtr buffer
)
716 GLFBDevContextPtr fbdevctx
= glFBDevGetCurrentContext();
717 struct GLFBDevRenderbufferRec
*frontrb
= (struct GLFBDevRenderbufferRec
*)
718 buffer
->glframebuffer
.Attachment
[BUFFER_FRONT_LEFT
].Renderbuffer
;
719 struct GLFBDevRenderbufferRec
*backrb
= (struct GLFBDevRenderbufferRec
*)
720 buffer
->glframebuffer
.Attachment
[BUFFER_BACK_LEFT
].Renderbuffer
;
722 if (!buffer
|| !buffer
->visual
->glvisual
.doubleBufferMode
)
725 /* check if swapping currently bound buffer */
726 if (fbdevctx
->drawBuffer
== buffer
) {
727 /* flush pending rendering */
728 _mesa_notifySwapBuffers(&fbdevctx
->glcontext
);
731 ASSERT(frontrb
->Base
.Data
);
732 ASSERT(backrb
->Base
.Data
);
733 _mesa_memcpy(frontrb
->Base
.Data
, backrb
->Base
.Data
, buffer
->size
);
738 glFBDevCreateContext( const GLFBDevVisualPtr visual
, GLFBDevContextPtr share
)
740 GLFBDevContextPtr ctx
;
742 struct dd_function_table functions
;
746 ctx
= CALLOC_STRUCT(GLFBDevContextRec
);
750 /* build table of device driver functions */
751 _mesa_init_driver_functions(&functions
);
752 functions
.GetString
= get_string
;
753 functions
.UpdateState
= update_state
;
754 functions
.GetBufferSize
= get_buffer_size
;
755 functions
.Viewport
= viewport
;
757 if (!_mesa_initialize_context(&ctx
->glcontext
, &visual
->glvisual
,
758 share
? &share
->glcontext
: NULL
,
759 &functions
, (void *) ctx
)) {
764 ctx
->visual
= visual
;
766 /* Create module contexts */
767 glctx
= (GLcontext
*) &ctx
->glcontext
;
768 _swrast_CreateContext( glctx
);
769 _ac_CreateContext( glctx
);
770 _tnl_CreateContext( glctx
);
771 _swsetup_CreateContext( glctx
);
772 _swsetup_Wakeup( glctx
);
774 /* use default TCL pipeline */
776 TNLcontext
*tnl
= TNL_CONTEXT(glctx
);
777 tnl
->Driver
.RunPipeline
= _tnl_run_pipeline
;
780 _mesa_enable_sw_extensions(glctx
);
787 glFBDevDestroyContext( GLFBDevContextPtr context
)
789 GLFBDevContextPtr fbdevctx
= glFBDevGetCurrentContext();
792 if (fbdevctx
== context
) {
793 /* destroying current context */
794 _mesa_make_current(NULL
, NULL
, NULL
);
795 _mesa_notifyDestroy(&context
->glcontext
);
797 _mesa_free_context_data(&context
->glcontext
);
804 glFBDevGetContextAttrib( const GLFBDevContextPtr context
, int attrib
)
813 glFBDevGetCurrentContext( void )
815 GET_CURRENT_CONTEXT(ctx
);
816 return (GLFBDevContextPtr
) ctx
;
821 glFBDevMakeCurrent( GLFBDevContextPtr context
,
822 GLFBDevBufferPtr drawBuffer
,
823 GLFBDevBufferPtr readBuffer
)
825 if (context
&& drawBuffer
&& readBuffer
) {
826 /* Make sure the context's visual and the buffers' visuals match.
827 * XXX we might do this by comparing specific fields like bits_per_pixel,
828 * visual, etc. in the future.
830 if (context
->visual
!= drawBuffer
->visual
||
831 context
->visual
!= readBuffer
->visual
) {
834 _mesa_make_current( &context
->glcontext
,
835 &drawBuffer
->glframebuffer
,
836 &readBuffer
->glframebuffer
);
837 context
->drawBuffer
= drawBuffer
;
838 context
->readBuffer
= readBuffer
;
839 context
->curBuffer
= drawBuffer
;
843 _mesa_make_current( NULL
, NULL
, NULL
);
849 #endif /* USE_GLFBDEV_DRIVER */