2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2007 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"
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"
67 * Pixel formats we support:
77 * Derived from Mesa's GLvisual class.
79 struct GLFBDevVisualRec
{
80 GLvisual glvisual
; /* base class */
81 struct fb_fix_screeninfo fix
;
82 struct fb_var_screeninfo var
;
87 * Derived from Mesa's GLframebuffer class.
89 struct GLFBDevBufferRec
{
90 GLframebuffer glframebuffer
; /* base class */
91 GLFBDevVisualPtr visual
;
92 struct fb_fix_screeninfo fix
;
93 struct fb_var_screeninfo var
;
94 size_t size
; /* color buffer size in bytes */
99 * Derived from Mesa's GLcontext class.
101 struct GLFBDevContextRec
{
102 GLcontext glcontext
; /* base class */
103 GLFBDevVisualPtr visual
;
104 GLFBDevBufferPtr drawBuffer
;
105 GLFBDevBufferPtr readBuffer
;
106 GLFBDevBufferPtr curBuffer
;
110 * Derived from Mesa's gl_renderbuffer class.
112 struct GLFBDevRenderbufferRec
{
113 struct gl_renderbuffer Base
;
114 GLubyte
*bottom
; /* pointer to last row */
115 GLuint rowStride
; /* in bytes */
116 GLboolean mallocedBuffer
;
120 /**********************************************************************/
121 /* Internal device driver functions */
122 /**********************************************************************/
125 static const GLubyte
*
126 get_string(GLcontext
*ctx
, GLenum pname
)
131 return (const GLubyte
*) "Mesa glfbdev";
139 update_state( GLcontext
*ctx
, GLuint new_state
)
141 /* not much to do here - pass it on */
142 _swrast_InvalidateState( ctx
, new_state
);
143 _swsetup_InvalidateState( ctx
, new_state
);
144 _vbo_InvalidateState( ctx
, new_state
);
145 _tnl_InvalidateState( ctx
, new_state
);
150 get_buffer_size( GLframebuffer
*buffer
, GLuint
*width
, GLuint
*height
)
152 const GLFBDevBufferPtr fbdevbuffer
= (GLFBDevBufferPtr
) buffer
;
153 *width
= fbdevbuffer
->var
.xres
;
154 *height
= fbdevbuffer
->var
.yres
;
159 * We only implement this function as a mechanism to check if the
160 * framebuffer size has changed (and update corresponding state).
163 viewport(GLcontext
*ctx
, GLint x
, GLint y
, GLsizei w
, GLsizei h
)
165 GLuint newWidth
, newHeight
;
166 GLframebuffer
*buffer
;
168 buffer
= ctx
->WinSysDrawBuffer
;
169 get_buffer_size( buffer
, &newWidth
, &newHeight
);
170 if (buffer
->Width
!= newWidth
|| buffer
->Height
!= newHeight
) {
171 _mesa_resize_framebuffer(ctx
, buffer
, newWidth
, newHeight
);
174 buffer
= ctx
->WinSysReadBuffer
;
175 get_buffer_size( buffer
, &newWidth
, &newHeight
);
176 if (buffer
->Width
!= newWidth
|| buffer
->Height
!= newHeight
) {
177 _mesa_resize_framebuffer(ctx
, buffer
, newWidth
, newHeight
);
183 * Generate code for span functions.
187 #define NAME(PREFIX) PREFIX##_B8G8R8
188 #define RB_TYPE GLubyte
190 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
191 #define INIT_PIXEL_PTR(P, X, Y) \
192 GLubyte *P = frb->bottom - (Y) * frb->rowStride + (X) * 3
193 #define INC_PIXEL_PTR(P) P += 3
194 #define STORE_PIXEL(DST, X, Y, VALUE) \
195 DST[0] = VALUE[BCOMP]; \
196 DST[1] = VALUE[GCOMP]; \
197 DST[2] = VALUE[RCOMP]
198 #define FETCH_PIXEL(DST, SRC) \
199 DST[RCOMP] = SRC[2]; \
200 DST[GCOMP] = SRC[1]; \
201 DST[BCOMP] = SRC[0]; \
202 DST[ACOMP] = CHAN_MAX
204 #include "swrast/s_spantemp.h"
208 #define NAME(PREFIX) PREFIX##_B8G8R8A8
209 #define RB_TYPE GLubyte
211 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
212 #define INIT_PIXEL_PTR(P, X, Y) \
213 GLubyte *P = frb->bottom - (Y) * frb->rowStride + (X) * 4
214 #define INC_PIXEL_PTR(P) P += 4
215 #define STORE_PIXEL(DST, X, Y, VALUE) \
216 DST[0] = VALUE[BCOMP]; \
217 DST[1] = VALUE[GCOMP]; \
218 DST[2] = VALUE[RCOMP]; \
219 DST[3] = VALUE[ACOMP]
220 #define FETCH_PIXEL(DST, SRC) \
221 DST[RCOMP] = SRC[2]; \
222 DST[GCOMP] = SRC[1]; \
223 DST[BCOMP] = SRC[0]; \
226 #include "swrast/s_spantemp.h"
229 /* 16-bit BGR (XXX implement dithering someday) */
230 #define NAME(PREFIX) PREFIX##_B5G6R5
231 #define RB_TYPE GLubyte
233 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
234 #define INIT_PIXEL_PTR(P, X, Y) \
235 GLushort *P = (GLushort *) (frb->bottom - (Y) * frb->rowStride + (X) * 2)
236 #define INC_PIXEL_PTR(P) P += 1
237 #define STORE_PIXEL(DST, X, Y, VALUE) \
238 DST[0] = ( (((VALUE[RCOMP]) & 0xf8) << 8) | (((VALUE[GCOMP]) & 0xfc) << 3) | ((VALUE[BCOMP]) >> 3) )
239 #define FETCH_PIXEL(DST, SRC) \
240 DST[RCOMP] = ( (((SRC[0]) >> 8) & 0xf8) | (((SRC[0]) >> 11) & 0x7) ); \
241 DST[GCOMP] = ( (((SRC[0]) >> 3) & 0xfc) | (((SRC[0]) >> 5) & 0x3) ); \
242 DST[BCOMP] = ( (((SRC[0]) << 3) & 0xf8) | (((SRC[0]) ) & 0x7) ); \
243 DST[ACOMP] = CHAN_MAX
245 #include "swrast/s_spantemp.h"
248 /* 15-bit BGR (XXX implement dithering someday) */
249 #define NAME(PREFIX) PREFIX##_B5G5R5
250 #define RB_TYPE GLubyte
252 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
253 #define INIT_PIXEL_PTR(P, X, Y) \
254 GLushort *P = (GLushort *) (frb->bottom - (Y) * frb->rowStride + (X) * 2)
255 #define INC_PIXEL_PTR(P) P += 1
256 #define STORE_PIXEL(DST, X, Y, VALUE) \
257 DST[0] = ( (((VALUE[RCOMP]) & 0xf8) << 7) | (((VALUE[GCOMP]) & 0xf8) << 2) | ((VALUE[BCOMP]) >> 3) )
258 #define FETCH_PIXEL(DST, SRC) \
259 DST[RCOMP] = ( (((SRC[0]) >> 7) & 0xf8) | (((SRC[0]) >> 10) & 0x7) ); \
260 DST[GCOMP] = ( (((SRC[0]) >> 2) & 0xf8) | (((SRC[0]) >> 5) & 0x7) ); \
261 DST[BCOMP] = ( (((SRC[0]) << 3) & 0xf8) | (((SRC[0]) ) & 0x7) ); \
262 DST[ACOMP] = CHAN_MAX
264 #include "swrast/s_spantemp.h"
267 /* 8-bit color index */
268 #define NAME(PREFIX) PREFIX##_CI8
270 #define RB_TYPE GLubyte
272 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
273 #define INIT_PIXEL_PTR(P, X, Y) \
274 GLubyte *P = frb->bottom - (Y) * frb->rowStride + (X)
275 #define INC_PIXEL_PTR(P) P += 1
276 #define STORE_PIXEL(DST, X, Y, VALUE) \
278 #define FETCH_PIXEL(DST, SRC) \
281 #include "swrast/s_spantemp.h"
286 /**********************************************************************/
287 /* Public API functions */
288 /**********************************************************************/
292 glFBDevGetString( int str
)
296 return "Mesa Project";
297 case GLFBDEV_VERSION
:
306 glFBDevGetProcAddress( const char *procName
)
308 struct name_address
{
310 const GLFBDevProc func
;
312 static const struct name_address functions
[] = {
313 { "glFBDevGetString", (GLFBDevProc
) glFBDevGetString
},
314 { "glFBDevGetProcAddress", (GLFBDevProc
) glFBDevGetProcAddress
},
315 { "glFBDevCreateVisual", (GLFBDevProc
) glFBDevCreateVisual
},
316 { "glFBDevDestroyVisual", (GLFBDevProc
) glFBDevDestroyVisual
},
317 { "glFBDevGetVisualAttrib", (GLFBDevProc
) glFBDevGetVisualAttrib
},
318 { "glFBDevCreateBuffer", (GLFBDevProc
) glFBDevCreateBuffer
},
319 { "glFBDevDestroyBuffer", (GLFBDevProc
) glFBDevDestroyBuffer
},
320 { "glFBDevGetBufferAttrib", (GLFBDevProc
) glFBDevGetBufferAttrib
},
321 { "glFBDevGetCurrentDrawBuffer", (GLFBDevProc
) glFBDevGetCurrentDrawBuffer
},
322 { "glFBDevGetCurrentReadBuffer", (GLFBDevProc
) glFBDevGetCurrentReadBuffer
},
323 { "glFBDevSwapBuffers", (GLFBDevProc
) glFBDevSwapBuffers
},
324 { "glFBDevCreateContext", (GLFBDevProc
) glFBDevCreateContext
},
325 { "glFBDevDestroyContext", (GLFBDevProc
) glFBDevDestroyContext
},
326 { "glFBDevGetContextAttrib", (GLFBDevProc
) glFBDevGetContextAttrib
},
327 { "glFBDevGetCurrentContext", (GLFBDevProc
) glFBDevGetCurrentContext
},
328 { "glFBDevMakeCurrent", (GLFBDevProc
) glFBDevMakeCurrent
},
331 const struct name_address
*entry
;
332 for (entry
= functions
; entry
->name
; entry
++) {
333 if (_mesa_strcmp(entry
->name
, procName
) == 0) {
337 return _glapi_get_proc_address(procName
);
342 glFBDevCreateVisual( const struct fb_fix_screeninfo
*fixInfo
,
343 const struct fb_var_screeninfo
*varInfo
,
346 GLFBDevVisualPtr vis
;
348 GLboolean rgbFlag
= GL_TRUE
, dbFlag
= GL_FALSE
, stereoFlag
= GL_FALSE
;
349 GLint redBits
= 0, greenBits
= 0, blueBits
= 0, alphaBits
= 0;
350 GLint indexBits
= 0, depthBits
= 0, stencilBits
= 0;
351 GLint accumRedBits
= 0, accumGreenBits
= 0;
352 GLint accumBlueBits
= 0, accumAlphaBits
= 0;
353 GLint numSamples
= 0;
358 vis
= CALLOC_STRUCT(GLFBDevVisualRec
);
362 vis
->fix
= *fixInfo
; /* struct assignment */
363 vis
->var
= *varInfo
; /* struct assignment */
365 for (attrib
= attribs
; attrib
&& *attrib
!= GLFBDEV_NONE
; attrib
++) {
367 case GLFBDEV_DOUBLE_BUFFER
:
370 case GLFBDEV_COLOR_INDEX
:
373 case GLFBDEV_DEPTH_SIZE
:
374 depthBits
= attrib
[1];
377 case GLFBDEV_STENCIL_SIZE
:
378 stencilBits
= attrib
[1];
381 case GLFBDEV_ACCUM_SIZE
:
382 accumRedBits
= accumGreenBits
= accumBlueBits
= accumAlphaBits
387 /* ignored for now */
389 case GLFBDEV_MULTISAMPLE
:
390 numSamples
= attrib
[1];
394 /* unexpected token */
401 redBits
= varInfo
->red
.length
;
402 greenBits
= varInfo
->green
.length
;
403 blueBits
= varInfo
->blue
.length
;
404 alphaBits
= varInfo
->transp
.length
;
406 if (fixInfo
->visual
== FB_VISUAL_TRUECOLOR
||
407 fixInfo
->visual
== FB_VISUAL_DIRECTCOLOR
) {
408 if (varInfo
->bits_per_pixel
== 24
409 && varInfo
->red
.offset
== 16
410 && varInfo
->green
.offset
== 8
411 && varInfo
->blue
.offset
== 0) {
412 vis
->pixelFormat
= PF_B8G8R8
;
414 else if (varInfo
->bits_per_pixel
== 32
415 && varInfo
->red
.offset
== 16
416 && varInfo
->green
.offset
== 8
417 && varInfo
->blue
.offset
== 0) {
418 vis
->pixelFormat
= PF_B8G8R8A8
;
420 else if (varInfo
->bits_per_pixel
== 16
421 && varInfo
->red
.offset
== 11
422 && varInfo
->green
.offset
== 5
423 && varInfo
->blue
.offset
== 0) {
424 vis
->pixelFormat
= PF_B5G6R5
;
426 else if (varInfo
->bits_per_pixel
== 16
427 && varInfo
->red
.offset
== 10
428 && varInfo
->green
.offset
== 5
429 && varInfo
->blue
.offset
== 0) {
430 vis
->pixelFormat
= PF_B5G5R5
;
433 _mesa_problem(NULL
, "Unsupported fbdev RGB visual/bitdepth!\n");
440 indexBits
= varInfo
->bits_per_pixel
;
441 if ((fixInfo
->visual
== FB_VISUAL_PSEUDOCOLOR
||
442 fixInfo
->visual
== FB_VISUAL_STATIC_PSEUDOCOLOR
)
443 && varInfo
->bits_per_pixel
== 8) {
444 vis
->pixelFormat
= PF_CI8
;
447 _mesa_problem(NULL
, "Unsupported fbdev CI visual/bitdepth!\n");
453 if (!_mesa_initialize_visual(&vis
->glvisual
, rgbFlag
, dbFlag
, stereoFlag
,
454 redBits
, greenBits
, blueBits
, alphaBits
,
455 indexBits
, depthBits
, stencilBits
,
456 accumRedBits
, accumGreenBits
,
457 accumBlueBits
, accumAlphaBits
,
459 /* something was invalid */
469 glFBDevDestroyVisual( GLFBDevVisualPtr visual
)
477 glFBDevGetVisualAttrib( const GLFBDevVisualPtr visual
, int attrib
)
487 delete_renderbuffer(struct gl_renderbuffer
*rb
)
489 struct GLFBDevRenderbufferRec
*frb
= (struct GLFBDevRenderbufferRec
*) rb
;
490 if (frb
->mallocedBuffer
) {
491 _mesa_free(frb
->Base
.Data
);
498 renderbuffer_storage(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
499 GLenum internalFormat
, GLuint width
, GLuint height
)
501 /* no-op: the renderbuffer storage is allocated just once when it's
502 * created. Never resized or reallocated.
508 static struct GLFBDevRenderbufferRec
*
509 new_glfbdev_renderbuffer(void *bufferStart
, const GLFBDevVisualPtr visual
)
511 struct GLFBDevRenderbufferRec
*rb
= CALLOC_STRUCT(GLFBDevRenderbufferRec
);
514 int pixelFormat
= visual
->pixelFormat
;
516 _mesa_init_renderbuffer(&rb
->Base
, name
);
518 rb
->Base
.Delete
= delete_renderbuffer
;
519 rb
->Base
.AllocStorage
= renderbuffer_storage
;
521 if (pixelFormat
== PF_B8G8R8
) {
522 rb
->Base
.GetRow
= get_row_B8G8R8
;
523 rb
->Base
.GetValues
= get_values_B8G8R8
;
524 rb
->Base
.PutRow
= put_row_B8G8R8
;
525 rb
->Base
.PutRowRGB
= put_row_rgb_B8G8R8
;
526 rb
->Base
.PutMonoRow
= put_mono_row_B8G8R8
;
527 rb
->Base
.PutValues
= put_values_B8G8R8
;
528 rb
->Base
.PutMonoValues
= put_mono_values_B8G8R8
;
530 else if (pixelFormat
== PF_B8G8R8A8
) {
531 rb
->Base
.GetRow
= get_row_B8G8R8A8
;
532 rb
->Base
.GetValues
= get_values_B8G8R8A8
;
533 rb
->Base
.PutRow
= put_row_B8G8R8A8
;
534 rb
->Base
.PutRowRGB
= put_row_rgb_B8G8R8A8
;
535 rb
->Base
.PutMonoRow
= put_mono_row_B8G8R8A8
;
536 rb
->Base
.PutValues
= put_values_B8G8R8A8
;
537 rb
->Base
.PutMonoValues
= put_mono_values_B8G8R8A8
;
539 else if (pixelFormat
== PF_B5G6R5
) {
540 rb
->Base
.GetRow
= get_row_B5G6R5
;
541 rb
->Base
.GetValues
= get_values_B5G6R5
;
542 rb
->Base
.PutRow
= put_row_B5G6R5
;
543 rb
->Base
.PutRowRGB
= put_row_rgb_B5G6R5
;
544 rb
->Base
.PutMonoRow
= put_mono_row_B5G6R5
;
545 rb
->Base
.PutValues
= put_values_B5G6R5
;
546 rb
->Base
.PutMonoValues
= put_mono_values_B5G6R5
;
548 else if (pixelFormat
== PF_B5G5R5
) {
549 rb
->Base
.GetRow
= get_row_B5G5R5
;
550 rb
->Base
.GetValues
= get_values_B5G5R5
;
551 rb
->Base
.PutRow
= put_row_B5G5R5
;
552 rb
->Base
.PutRowRGB
= put_row_rgb_B5G5R5
;
553 rb
->Base
.PutMonoRow
= put_mono_row_B5G5R5
;
554 rb
->Base
.PutValues
= put_values_B5G5R5
;
555 rb
->Base
.PutMonoValues
= put_mono_values_B5G5R5
;
557 else if (pixelFormat
== PF_CI8
) {
558 rb
->Base
.GetRow
= get_row_CI8
;
559 rb
->Base
.GetValues
= get_values_CI8
;
560 rb
->Base
.PutRow
= put_row_CI8
;
561 rb
->Base
.PutMonoRow
= put_mono_row_CI8
;
562 rb
->Base
.PutValues
= put_values_CI8
;
563 rb
->Base
.PutMonoValues
= put_mono_values_CI8
;
566 if (pixelFormat
== PF_CI8
) {
567 rb
->Base
.InternalFormat
= GL_COLOR_INDEX8_EXT
;
568 rb
->Base
._BaseFormat
= GL_COLOR_INDEX
;
571 rb
->Base
.InternalFormat
= GL_RGBA
;
572 rb
->Base
._BaseFormat
= GL_RGBA
;
574 rb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
575 rb
->Base
.Data
= bufferStart
;
577 rb
->rowStride
= visual
->var
.xres_virtual
* visual
->var
.bits_per_pixel
/ 8;
578 rb
->bottom
= (GLubyte
*) bufferStart
579 + (visual
->var
.yres
- 1) * rb
->rowStride
;
581 rb
->Base
.Width
= visual
->var
.xres
;
582 rb
->Base
.Height
= visual
->var
.yres
;
584 rb
->Base
.RedBits
= visual
->var
.red
.length
;
585 rb
->Base
.GreenBits
= visual
->var
.green
.length
;
586 rb
->Base
.BlueBits
= visual
->var
.blue
.length
;
587 rb
->Base
.AlphaBits
= visual
->var
.transp
.length
;
589 rb
->Base
.InternalFormat
= pixelFormat
;
595 glFBDevCreateBuffer( const struct fb_fix_screeninfo
*fixInfo
,
596 const struct fb_var_screeninfo
*varInfo
,
597 const GLFBDevVisualPtr visual
,
598 void *frontBuffer
, void *backBuffer
, size_t size
)
600 struct GLFBDevRenderbufferRec
*frontrb
, *backrb
;
601 GLFBDevBufferPtr buf
;
607 /* this is to update the visual if there was a resize and the
608 buffer is created again */
609 visual
->var
= *varInfo
;
610 visual
->fix
= *fixInfo
;
612 if (visual
->fix
.visual
!= fixInfo
->visual
||
613 visual
->fix
.type
!= fixInfo
->type
||
614 visual
->var
.bits_per_pixel
!= varInfo
->bits_per_pixel
||
615 visual
->var
.grayscale
!= varInfo
->grayscale
||
616 visual
->var
.red
.offset
!= varInfo
->red
.offset
||
617 visual
->var
.green
.offset
!= varInfo
->green
.offset
||
618 visual
->var
.blue
.offset
!= varInfo
->blue
.offset
||
619 visual
->var
.transp
.offset
!= varInfo
->transp
.offset
) {
620 /* visual mismatch! */
624 buf
= CALLOC_STRUCT(GLFBDevBufferRec
);
628 /* basic framebuffer setup */
629 _mesa_initialize_framebuffer(&buf
->glframebuffer
, &visual
->glvisual
);
630 /* add front renderbuffer */
631 frontrb
= new_glfbdev_renderbuffer(frontBuffer
, visual
);
632 _mesa_add_renderbuffer(&buf
->glframebuffer
, BUFFER_FRONT_LEFT
,
634 /* add back renderbuffer */
635 if (visual
->glvisual
.doubleBufferMode
) {
636 const int malloced
= !backBuffer
;
638 /* malloc a back buffer */
639 backBuffer
= _mesa_malloc(size
);
641 _mesa_free_framebuffer_data(&buf
->glframebuffer
);
647 backrb
= new_glfbdev_renderbuffer(backBuffer
, visual
);
652 backrb
->mallocedBuffer
= malloced
;
654 _mesa_add_renderbuffer(&buf
->glframebuffer
, BUFFER_BACK_LEFT
,
657 /* add software renderbuffers */
658 _mesa_add_soft_renderbuffers(&buf
->glframebuffer
,
659 GL_FALSE
, /* color */
660 visual
->glvisual
.haveDepthBuffer
,
661 visual
->glvisual
.haveStencilBuffer
,
662 visual
->glvisual
.haveAccumBuffer
,
663 GL_FALSE
, /* alpha */
664 GL_FALSE
/* aux bufs */);
666 buf
->fix
= *fixInfo
; /* struct assignment */
667 buf
->var
= *varInfo
; /* struct assignment */
668 buf
->visual
= visual
; /* ptr assignment */
670 buf
->bytesPerPixel
= visual
->var
.bits_per_pixel
/ 8;
677 glFBDevDestroyBuffer( GLFBDevBufferPtr buffer
)
680 /* check if destroying the current buffer */
681 GLFBDevBufferPtr curDraw
= glFBDevGetCurrentDrawBuffer();
682 GLFBDevBufferPtr curRead
= glFBDevGetCurrentReadBuffer();
683 if (buffer
== curDraw
|| buffer
== curRead
) {
684 glFBDevMakeCurrent( NULL
, NULL
, NULL
);
687 struct gl_framebuffer
*fb
= &buffer
->glframebuffer
;
688 _mesa_unreference_framebuffer(&fb
);
695 glFBDevGetBufferAttrib( const GLFBDevBufferPtr buffer
, int attrib
)
704 glFBDevGetCurrentDrawBuffer( void )
706 GLFBDevContextPtr fbdevctx
= glFBDevGetCurrentContext();
708 return fbdevctx
->drawBuffer
;
715 glFBDevGetCurrentReadBuffer( void )
717 GLFBDevContextPtr fbdevctx
= glFBDevGetCurrentContext();
719 return fbdevctx
->readBuffer
;
726 glFBDevSwapBuffers( GLFBDevBufferPtr buffer
)
728 GLFBDevContextPtr fbdevctx
= glFBDevGetCurrentContext();
729 struct GLFBDevRenderbufferRec
*frontrb
= (struct GLFBDevRenderbufferRec
*)
730 buffer
->glframebuffer
.Attachment
[BUFFER_FRONT_LEFT
].Renderbuffer
;
731 struct GLFBDevRenderbufferRec
*backrb
= (struct GLFBDevRenderbufferRec
*)
732 buffer
->glframebuffer
.Attachment
[BUFFER_BACK_LEFT
].Renderbuffer
;
734 if (!buffer
|| !buffer
->visual
->glvisual
.doubleBufferMode
)
737 /* check if swapping currently bound buffer */
738 if (fbdevctx
->drawBuffer
== buffer
) {
739 /* flush pending rendering */
740 _mesa_notifySwapBuffers(&fbdevctx
->glcontext
);
743 ASSERT(frontrb
->Base
.Data
);
744 ASSERT(backrb
->Base
.Data
);
745 _mesa_memcpy(frontrb
->Base
.Data
, backrb
->Base
.Data
, buffer
->size
);
750 glFBDevCreateContext( const GLFBDevVisualPtr visual
, GLFBDevContextPtr share
)
752 GLFBDevContextPtr ctx
;
754 struct dd_function_table functions
;
758 ctx
= CALLOC_STRUCT(GLFBDevContextRec
);
762 /* build table of device driver functions */
763 _mesa_init_driver_functions(&functions
);
764 functions
.GetString
= get_string
;
765 functions
.UpdateState
= update_state
;
766 functions
.GetBufferSize
= get_buffer_size
;
767 functions
.Viewport
= viewport
;
769 if (!_mesa_initialize_context(&ctx
->glcontext
, &visual
->glvisual
,
770 share
? &share
->glcontext
: NULL
,
771 &functions
, (void *) ctx
)) {
776 ctx
->visual
= visual
;
778 /* Create module contexts */
779 glctx
= (GLcontext
*) &ctx
->glcontext
;
780 _swrast_CreateContext( glctx
);
781 _vbo_CreateContext( glctx
);
782 _tnl_CreateContext( glctx
);
783 _swsetup_CreateContext( glctx
);
784 _swsetup_Wakeup( glctx
);
786 /* use default TCL pipeline */
788 TNLcontext
*tnl
= TNL_CONTEXT(glctx
);
789 tnl
->Driver
.RunPipeline
= _tnl_run_pipeline
;
792 _mesa_enable_sw_extensions(glctx
);
799 glFBDevDestroyContext( GLFBDevContextPtr context
)
801 GLFBDevContextPtr fbdevctx
= glFBDevGetCurrentContext();
804 GLcontext
*mesaCtx
= &context
->glcontext
;
806 _swsetup_DestroyContext( mesaCtx
);
807 _swrast_DestroyContext( mesaCtx
);
808 _tnl_DestroyContext( mesaCtx
);
809 _vbo_DestroyContext( mesaCtx
);
811 if (fbdevctx
== context
) {
812 /* destroying current context */
813 _mesa_make_current(NULL
, NULL
, NULL
);
815 _mesa_free_context_data(&context
->glcontext
);
822 glFBDevGetContextAttrib( const GLFBDevContextPtr context
, int attrib
)
831 glFBDevGetCurrentContext( void )
833 GET_CURRENT_CONTEXT(ctx
);
834 return (GLFBDevContextPtr
) ctx
;
839 glFBDevMakeCurrent( GLFBDevContextPtr context
,
840 GLFBDevBufferPtr drawBuffer
,
841 GLFBDevBufferPtr readBuffer
)
843 if (context
&& drawBuffer
&& readBuffer
) {
844 /* Make sure the context's visual and the buffers' visuals match.
845 * XXX we might do this by comparing specific fields like bits_per_pixel,
846 * visual, etc. in the future.
848 if (context
->visual
!= drawBuffer
->visual
||
849 context
->visual
!= readBuffer
->visual
) {
852 _mesa_make_current( &context
->glcontext
,
853 &drawBuffer
->glframebuffer
,
854 &readBuffer
->glframebuffer
);
855 context
->drawBuffer
= drawBuffer
;
856 context
->readBuffer
= readBuffer
;
857 context
->curBuffer
= drawBuffer
;
861 _mesa_make_current( NULL
, NULL
, NULL
);
867 #endif /* USE_GLFBDEV_DRIVER */