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"
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 _vbo_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
;
156 *height
= fbdevbuffer
->var
.yres
;
161 * We only implement this function as a mechanism to check if the
162 * framebuffer size has changed (and update corresponding state).
165 viewport(GLcontext
*ctx
, GLint x
, GLint y
, GLsizei w
, GLsizei h
)
167 GLuint newWidth
, newHeight
;
168 GLframebuffer
*buffer
;
170 buffer
= ctx
->WinSysDrawBuffer
;
171 get_buffer_size( buffer
, &newWidth
, &newHeight
);
172 if (buffer
->Width
!= newWidth
|| buffer
->Height
!= newHeight
) {
173 _mesa_resize_framebuffer(ctx
, buffer
, newWidth
, newHeight
);
176 buffer
= ctx
->WinSysReadBuffer
;
177 get_buffer_size( buffer
, &newWidth
, &newHeight
);
178 if (buffer
->Width
!= newWidth
|| buffer
->Height
!= newHeight
) {
179 _mesa_resize_framebuffer(ctx
, buffer
, newWidth
, newHeight
);
185 * Generate code for span functions.
189 #define NAME(PREFIX) PREFIX##_B8G8R8
190 #define RB_TYPE GLubyte
192 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
193 #define INIT_PIXEL_PTR(P, X, Y) \
194 GLubyte *P = frb->bottom - (Y) * frb->rowStride + (X) * 3
195 #define INC_PIXEL_PTR(P) P += 3
196 #define STORE_PIXEL(DST, X, Y, VALUE) \
197 DST[0] = VALUE[BCOMP]; \
198 DST[1] = VALUE[GCOMP]; \
199 DST[2] = VALUE[RCOMP]
200 #define FETCH_PIXEL(DST, SRC) \
201 DST[RCOMP] = SRC[2]; \
202 DST[GCOMP] = SRC[1]; \
203 DST[BCOMP] = SRC[0]; \
204 DST[ACOMP] = CHAN_MAX
206 #include "swrast/s_spantemp.h"
210 #define NAME(PREFIX) PREFIX##_B8G8R8A8
211 #define RB_TYPE GLubyte
213 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
214 #define INIT_PIXEL_PTR(P, X, Y) \
215 GLubyte *P = frb->bottom - (Y) * frb->rowStride + (X) * 4
216 #define INC_PIXEL_PTR(P) P += 4
217 #define STORE_PIXEL(DST, X, Y, VALUE) \
218 DST[0] = VALUE[BCOMP]; \
219 DST[1] = VALUE[GCOMP]; \
220 DST[2] = VALUE[RCOMP]; \
221 DST[3] = VALUE[ACOMP]
222 #define FETCH_PIXEL(DST, SRC) \
223 DST[RCOMP] = SRC[2]; \
224 DST[GCOMP] = SRC[1]; \
225 DST[BCOMP] = SRC[0]; \
228 #include "swrast/s_spantemp.h"
231 /* 16-bit BGR (XXX implement dithering someday) */
232 #define NAME(PREFIX) PREFIX##_B5G6R5
233 #define RB_TYPE GLubyte
235 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
236 #define INIT_PIXEL_PTR(P, X, Y) \
237 GLushort *P = (GLushort *) (frb->bottom - (Y) * frb->rowStride + (X) * 2)
238 #define INC_PIXEL_PTR(P) P += 1
239 #define STORE_PIXEL(DST, X, Y, VALUE) \
240 DST[0] = ( (((VALUE[RCOMP]) & 0xf8) << 8) | (((VALUE[GCOMP]) & 0xfc) << 3) | ((VALUE[BCOMP]) >> 3) )
241 #define FETCH_PIXEL(DST, SRC) \
242 DST[RCOMP] = ( (((SRC[0]) >> 8) & 0xf8) | (((SRC[0]) >> 11) & 0x7) ); \
243 DST[GCOMP] = ( (((SRC[0]) >> 3) & 0xfc) | (((SRC[0]) >> 5) & 0x3) ); \
244 DST[BCOMP] = ( (((SRC[0]) << 3) & 0xf8) | (((SRC[0]) ) & 0x7) ); \
245 DST[ACOMP] = CHAN_MAX
247 #include "swrast/s_spantemp.h"
250 /* 15-bit BGR (XXX implement dithering someday) */
251 #define NAME(PREFIX) PREFIX##_B5G5R5
252 #define RB_TYPE GLubyte
254 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
255 #define INIT_PIXEL_PTR(P, X, Y) \
256 GLushort *P = (GLushort *) (frb->bottom - (Y) * frb->rowStride + (X) * 2)
257 #define INC_PIXEL_PTR(P) P += 1
258 #define STORE_PIXEL(DST, X, Y, VALUE) \
259 DST[0] = ( (((VALUE[RCOMP]) & 0xf8) << 7) | (((VALUE[GCOMP]) & 0xf8) << 2) | ((VALUE[BCOMP]) >> 3) )
260 #define FETCH_PIXEL(DST, SRC) \
261 DST[RCOMP] = ( (((SRC[0]) >> 7) & 0xf8) | (((SRC[0]) >> 10) & 0x7) ); \
262 DST[GCOMP] = ( (((SRC[0]) >> 2) & 0xf8) | (((SRC[0]) >> 5) & 0x7) ); \
263 DST[BCOMP] = ( (((SRC[0]) << 3) & 0xf8) | (((SRC[0]) ) & 0x7) ); \
264 DST[ACOMP] = CHAN_MAX
266 #include "swrast/s_spantemp.h"
269 /* 8-bit color index */
270 #define NAME(PREFIX) PREFIX##_CI8
272 #define RB_TYPE GLubyte
274 struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
275 #define INIT_PIXEL_PTR(P, X, Y) \
276 GLubyte *P = frb->bottom - (Y) * frb->rowStride + (X)
277 #define INC_PIXEL_PTR(P) P += 1
278 #define STORE_PIXEL(DST, X, Y, VALUE) \
280 #define FETCH_PIXEL(DST, SRC) \
283 #include "swrast/s_spantemp.h"
288 /**********************************************************************/
289 /* Public API functions */
290 /**********************************************************************/
294 glFBDevGetString( int str
)
298 return "Mesa Project";
299 case GLFBDEV_VERSION
:
308 glFBDevGetProcAddress( const char *procName
)
310 struct name_address
{
312 const GLFBDevProc func
;
314 static const struct name_address functions
[] = {
315 { "glFBDevGetString", (GLFBDevProc
) glFBDevGetString
},
316 { "glFBDevGetProcAddress", (GLFBDevProc
) glFBDevGetProcAddress
},
317 { "glFBDevCreateVisual", (GLFBDevProc
) glFBDevCreateVisual
},
318 { "glFBDevDestroyVisual", (GLFBDevProc
) glFBDevDestroyVisual
},
319 { "glFBDevGetVisualAttrib", (GLFBDevProc
) glFBDevGetVisualAttrib
},
320 { "glFBDevCreateBuffer", (GLFBDevProc
) glFBDevCreateBuffer
},
321 { "glFBDevDestroyBuffer", (GLFBDevProc
) glFBDevDestroyBuffer
},
322 { "glFBDevGetBufferAttrib", (GLFBDevProc
) glFBDevGetBufferAttrib
},
323 { "glFBDevGetCurrentDrawBuffer", (GLFBDevProc
) glFBDevGetCurrentDrawBuffer
},
324 { "glFBDevGetCurrentReadBuffer", (GLFBDevProc
) glFBDevGetCurrentReadBuffer
},
325 { "glFBDevSwapBuffers", (GLFBDevProc
) glFBDevSwapBuffers
},
326 { "glFBDevCreateContext", (GLFBDevProc
) glFBDevCreateContext
},
327 { "glFBDevDestroyContext", (GLFBDevProc
) glFBDevDestroyContext
},
328 { "glFBDevGetContextAttrib", (GLFBDevProc
) glFBDevGetContextAttrib
},
329 { "glFBDevGetCurrentContext", (GLFBDevProc
) glFBDevGetCurrentContext
},
330 { "glFBDevMakeCurrent", (GLFBDevProc
) glFBDevMakeCurrent
},
333 const struct name_address
*entry
;
334 for (entry
= functions
; entry
->name
; entry
++) {
335 if (_mesa_strcmp(entry
->name
, procName
) == 0) {
339 return _glapi_get_proc_address(procName
);
344 glFBDevCreateVisual( const struct fb_fix_screeninfo
*fixInfo
,
345 const struct fb_var_screeninfo
*varInfo
,
348 GLFBDevVisualPtr vis
;
350 GLboolean rgbFlag
= GL_TRUE
, dbFlag
= GL_FALSE
, stereoFlag
= GL_FALSE
;
351 GLint redBits
= 0, greenBits
= 0, blueBits
= 0, alphaBits
= 0;
352 GLint indexBits
= 0, depthBits
= 0, stencilBits
= 0;
353 GLint accumRedBits
= 0, accumGreenBits
= 0;
354 GLint accumBlueBits
= 0, accumAlphaBits
= 0;
355 GLint numSamples
= 0;
360 vis
= CALLOC_STRUCT(GLFBDevVisualRec
);
364 vis
->fix
= *fixInfo
; /* struct assignment */
365 vis
->var
= *varInfo
; /* struct assignment */
367 for (attrib
= attribs
; attrib
&& *attrib
!= GLFBDEV_NONE
; attrib
++) {
369 case GLFBDEV_DOUBLE_BUFFER
:
372 case GLFBDEV_COLOR_INDEX
:
375 case GLFBDEV_DEPTH_SIZE
:
376 depthBits
= attrib
[1];
379 case GLFBDEV_STENCIL_SIZE
:
380 stencilBits
= attrib
[1];
383 case GLFBDEV_ACCUM_SIZE
:
384 accumRedBits
= accumGreenBits
= accumBlueBits
= accumAlphaBits
389 /* ignored for now */
391 case GLFBDEV_MULTISAMPLE
:
392 numSamples
= attrib
[1];
396 /* unexpected token */
403 redBits
= varInfo
->red
.length
;
404 greenBits
= varInfo
->green
.length
;
405 blueBits
= varInfo
->blue
.length
;
406 alphaBits
= varInfo
->transp
.length
;
408 if (fixInfo
->visual
== FB_VISUAL_TRUECOLOR
||
409 fixInfo
->visual
== FB_VISUAL_DIRECTCOLOR
) {
410 if(varInfo
->bits_per_pixel
== 24
411 && varInfo
->red
.offset
== 16
412 && varInfo
->green
.offset
== 8
413 && varInfo
->blue
.offset
== 0)
414 vis
->pixelFormat
= PF_B8G8R8
;
416 else if(varInfo
->bits_per_pixel
== 32
417 && varInfo
->red
.offset
== 16
418 && varInfo
->green
.offset
== 8
419 && varInfo
->blue
.offset
== 0)
420 vis
->pixelFormat
= PF_B8G8R8A8
;
422 else if(varInfo
->bits_per_pixel
== 16
423 && varInfo
->red
.offset
== 11
424 && varInfo
->green
.offset
== 5
425 && varInfo
->blue
.offset
== 0)
426 vis
->pixelFormat
= PF_B5G6R5
;
428 else if(varInfo
->bits_per_pixel
== 16
429 && varInfo
->red
.offset
== 10
430 && varInfo
->green
.offset
== 5
431 && varInfo
->blue
.offset
== 0)
432 vis
->pixelFormat
= PF_B5G5R5
;
435 _mesa_problem(NULL
, "Unsupported fbdev RGB visual/bitdepth!\n");
442 indexBits
= varInfo
->bits_per_pixel
;
443 if ((fixInfo
->visual
== FB_VISUAL_PSEUDOCOLOR
||
444 fixInfo
->visual
== FB_VISUAL_STATIC_PSEUDOCOLOR
)
445 && varInfo
->bits_per_pixel
== 8) {
446 vis
->pixelFormat
= PF_CI8
;
449 _mesa_problem(NULL
, "Unsupported fbdev CI visual/bitdepth!\n");
455 if (!_mesa_initialize_visual(&vis
->glvisual
, rgbFlag
, dbFlag
, stereoFlag
,
456 redBits
, greenBits
, blueBits
, alphaBits
,
457 indexBits
, depthBits
, stencilBits
,
458 accumRedBits
, accumGreenBits
,
459 accumBlueBits
, accumAlphaBits
,
461 /* something was invalid */
471 glFBDevDestroyVisual( GLFBDevVisualPtr visual
)
479 glFBDevGetVisualAttrib( const GLFBDevVisualPtr visual
, int attrib
)
489 delete_renderbuffer(struct gl_renderbuffer
*rb
)
491 struct GLFBDevRenderbufferRec
*frb
= (struct GLFBDevRenderbufferRec
*) rb
;
492 if (frb
->mallocedBuffer
) {
493 _mesa_free(frb
->Base
.Data
);
500 renderbuffer_storage(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
501 GLenum internalFormat
, GLuint width
, GLuint height
)
503 /* no-op: the renderbuffer storage is allocated just once when it's
504 * created. Never resized or reallocated.
510 static struct GLFBDevRenderbufferRec
*
511 new_glfbdev_renderbuffer(void *bufferStart
, const GLFBDevVisualPtr visual
)
513 struct GLFBDevRenderbufferRec
*rb
= CALLOC_STRUCT(GLFBDevRenderbufferRec
);
516 int pixelFormat
= visual
->pixelFormat
;
518 _mesa_init_renderbuffer(&rb
->Base
, name
);
520 rb
->Base
.Delete
= delete_renderbuffer
;
521 rb
->Base
.AllocStorage
= renderbuffer_storage
;
523 if (pixelFormat
== PF_B8G8R8
) {
524 rb
->Base
.GetRow
= get_row_B8G8R8
;
525 rb
->Base
.GetValues
= get_values_B8G8R8
;
526 rb
->Base
.PutRow
= put_row_B8G8R8
;
527 rb
->Base
.PutRowRGB
= put_row_rgb_B8G8R8
;
528 rb
->Base
.PutMonoRow
= put_mono_row_B8G8R8
;
529 rb
->Base
.PutValues
= put_values_B8G8R8
;
530 rb
->Base
.PutMonoValues
= put_mono_values_B8G8R8
;
532 else if (pixelFormat
== PF_B8G8R8A8
) {
533 rb
->Base
.GetRow
= get_row_B8G8R8A8
;
534 rb
->Base
.GetValues
= get_values_B8G8R8A8
;
535 rb
->Base
.PutRow
= put_row_B8G8R8A8
;
536 rb
->Base
.PutRowRGB
= put_row_rgb_B8G8R8A8
;
537 rb
->Base
.PutMonoRow
= put_mono_row_B8G8R8A8
;
538 rb
->Base
.PutValues
= put_values_B8G8R8A8
;
539 rb
->Base
.PutMonoValues
= put_mono_values_B8G8R8A8
;
541 else if (pixelFormat
== PF_B5G6R5
) {
542 rb
->Base
.GetRow
= get_row_B5G6R5
;
543 rb
->Base
.GetValues
= get_values_B5G6R5
;
544 rb
->Base
.PutRow
= put_row_B5G6R5
;
545 rb
->Base
.PutRowRGB
= put_row_rgb_B5G6R5
;
546 rb
->Base
.PutMonoRow
= put_mono_row_B5G6R5
;
547 rb
->Base
.PutValues
= put_values_B5G6R5
;
548 rb
->Base
.PutMonoValues
= put_mono_values_B5G6R5
;
550 else if (pixelFormat
== PF_B5G5R5
) {
551 rb
->Base
.GetRow
= get_row_B5G5R5
;
552 rb
->Base
.GetValues
= get_values_B5G5R5
;
553 rb
->Base
.PutRow
= put_row_B5G5R5
;
554 rb
->Base
.PutRowRGB
= put_row_rgb_B5G5R5
;
555 rb
->Base
.PutMonoRow
= put_mono_row_B5G5R5
;
556 rb
->Base
.PutValues
= put_values_B5G5R5
;
557 rb
->Base
.PutMonoValues
= put_mono_values_B5G5R5
;
559 else if (pixelFormat
== PF_CI8
) {
560 rb
->Base
.GetRow
= get_row_CI8
;
561 rb
->Base
.GetValues
= get_values_CI8
;
562 rb
->Base
.PutRow
= put_row_CI8
;
563 rb
->Base
.PutMonoRow
= put_mono_row_CI8
;
564 rb
->Base
.PutValues
= put_values_CI8
;
565 rb
->Base
.PutMonoValues
= put_mono_values_CI8
;
568 if (pixelFormat
== PF_CI8
) {
569 rb
->Base
.InternalFormat
= GL_COLOR_INDEX8_EXT
;
570 rb
->Base
._BaseFormat
= GL_COLOR_INDEX
;
573 rb
->Base
.InternalFormat
= GL_RGBA
;
574 rb
->Base
._BaseFormat
= GL_RGBA
;
576 rb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
577 rb
->Base
.Data
= bufferStart
;
579 rb
->rowStride
= visual
->var
.xres_virtual
* visual
->var
.bits_per_pixel
/ 8;
580 rb
->bottom
= (GLubyte
*) bufferStart
581 + (visual
->var
.yres
- 1) * rb
->rowStride
;
583 rb
->Base
.Width
= visual
->var
.xres
;
584 rb
->Base
.Height
= visual
->var
.yres
;
586 rb
->Base
.RedBits
= visual
->var
.red
.length
;
587 rb
->Base
.GreenBits
= visual
->var
.green
.length
;
588 rb
->Base
.BlueBits
= visual
->var
.blue
.length
;
589 rb
->Base
.AlphaBits
= visual
->var
.transp
.length
;
591 rb
->Base
.InternalFormat
= pixelFormat
;
597 glFBDevCreateBuffer( const struct fb_fix_screeninfo
*fixInfo
,
598 const struct fb_var_screeninfo
*varInfo
,
599 const GLFBDevVisualPtr visual
,
600 void *frontBuffer
, void *backBuffer
, size_t size
)
602 struct GLFBDevRenderbufferRec
*frontrb
, *backrb
;
603 GLFBDevBufferPtr buf
;
609 /* this is to update the visual if there was a resize and the
610 buffer is created again */
611 visual
->var
= *varInfo
;
612 visual
->fix
= *fixInfo
;
614 if (visual
->fix
.visual
!= fixInfo
->visual
||
615 visual
->fix
.type
!= fixInfo
->type
||
616 visual
->var
.bits_per_pixel
!= varInfo
->bits_per_pixel
||
617 visual
->var
.grayscale
!= varInfo
->grayscale
||
618 visual
->var
.red
.offset
!= varInfo
->red
.offset
||
619 visual
->var
.green
.offset
!= varInfo
->green
.offset
||
620 visual
->var
.blue
.offset
!= varInfo
->blue
.offset
||
621 visual
->var
.transp
.offset
!= varInfo
->transp
.offset
) {
622 /* visual mismatch! */
626 buf
= CALLOC_STRUCT(GLFBDevBufferRec
);
630 /* basic framebuffer setup */
631 _mesa_initialize_framebuffer(&buf
->glframebuffer
, &visual
->glvisual
);
632 /* add front renderbuffer */
633 frontrb
= new_glfbdev_renderbuffer(frontBuffer
, visual
);
634 _mesa_add_renderbuffer(&buf
->glframebuffer
, BUFFER_FRONT_LEFT
,
636 /* add back renderbuffer */
637 if (visual
->glvisual
.doubleBufferMode
) {
638 int malloced
= !backBuffer
;
640 /* malloc a back buffer */
641 backBuffer
= _mesa_malloc(size
);
643 _mesa_free_framebuffer_data(&buf
->glframebuffer
);
649 backrb
= new_glfbdev_renderbuffer(backBuffer
, visual
);
651 backrb
->mallocedBuffer
= GL_TRUE
;
653 _mesa_add_renderbuffer(&buf
->glframebuffer
, BUFFER_BACK_LEFT
,
656 /* add software renderbuffers */
657 _mesa_add_soft_renderbuffers(&buf
->glframebuffer
,
658 GL_FALSE
, /* color */
659 visual
->glvisual
.haveDepthBuffer
,
660 visual
->glvisual
.haveStencilBuffer
,
661 visual
->glvisual
.haveAccumBuffer
,
662 GL_FALSE
, /* alpha */
663 GL_FALSE
/* aux bufs */);
665 buf
->fix
= *fixInfo
; /* struct assignment */
666 buf
->var
= *varInfo
; /* struct assignment */
667 buf
->visual
= visual
; /* ptr assignment */
669 buf
->bytesPerPixel
= visual
->var
.bits_per_pixel
/ 8;
676 glFBDevDestroyBuffer( GLFBDevBufferPtr buffer
)
679 /* check if destroying the current buffer */
680 GLFBDevBufferPtr curDraw
= glFBDevGetCurrentDrawBuffer();
681 GLFBDevBufferPtr curRead
= glFBDevGetCurrentReadBuffer();
682 if (buffer
== curDraw
|| buffer
== curRead
) {
683 glFBDevMakeCurrent( NULL
, NULL
, NULL
);
685 /* free the software depth, stencil, accum buffers */
686 _mesa_free_framebuffer_data(&buffer
->glframebuffer
);
693 glFBDevGetBufferAttrib( const GLFBDevBufferPtr buffer
, int attrib
)
702 glFBDevGetCurrentDrawBuffer( void )
704 GLFBDevContextPtr fbdevctx
= glFBDevGetCurrentContext();
706 return fbdevctx
->drawBuffer
;
713 glFBDevGetCurrentReadBuffer( void )
715 GLFBDevContextPtr fbdevctx
= glFBDevGetCurrentContext();
717 return fbdevctx
->readBuffer
;
724 glFBDevSwapBuffers( GLFBDevBufferPtr buffer
)
726 GLFBDevContextPtr fbdevctx
= glFBDevGetCurrentContext();
727 struct GLFBDevRenderbufferRec
*frontrb
= (struct GLFBDevRenderbufferRec
*)
728 buffer
->glframebuffer
.Attachment
[BUFFER_FRONT_LEFT
].Renderbuffer
;
729 struct GLFBDevRenderbufferRec
*backrb
= (struct GLFBDevRenderbufferRec
*)
730 buffer
->glframebuffer
.Attachment
[BUFFER_BACK_LEFT
].Renderbuffer
;
732 if (!buffer
|| !buffer
->visual
->glvisual
.doubleBufferMode
)
735 /* check if swapping currently bound buffer */
736 if (fbdevctx
->drawBuffer
== buffer
) {
737 /* flush pending rendering */
738 _mesa_notifySwapBuffers(&fbdevctx
->glcontext
);
741 ASSERT(frontrb
->Base
.Data
);
742 ASSERT(backrb
->Base
.Data
);
743 _mesa_memcpy(frontrb
->Base
.Data
, backrb
->Base
.Data
, buffer
->size
);
748 glFBDevCreateContext( const GLFBDevVisualPtr visual
, GLFBDevContextPtr share
)
750 GLFBDevContextPtr ctx
;
752 struct dd_function_table functions
;
756 ctx
= CALLOC_STRUCT(GLFBDevContextRec
);
760 /* build table of device driver functions */
761 _mesa_init_driver_functions(&functions
);
762 functions
.GetString
= get_string
;
763 functions
.UpdateState
= update_state
;
764 functions
.GetBufferSize
= get_buffer_size
;
765 functions
.Viewport
= viewport
;
767 if (!_mesa_initialize_context(&ctx
->glcontext
, &visual
->glvisual
,
768 share
? &share
->glcontext
: NULL
,
769 &functions
, (void *) ctx
)) {
774 ctx
->visual
= visual
;
776 /* Create module contexts */
777 glctx
= (GLcontext
*) &ctx
->glcontext
;
778 _swrast_CreateContext( glctx
);
779 _vbo_CreateContext( glctx
);
780 _tnl_CreateContext( glctx
);
781 _swsetup_CreateContext( glctx
);
782 _swsetup_Wakeup( glctx
);
784 /* use default TCL pipeline */
786 TNLcontext
*tnl
= TNL_CONTEXT(glctx
);
787 tnl
->Driver
.RunPipeline
= _tnl_run_pipeline
;
790 _mesa_enable_sw_extensions(glctx
);
797 glFBDevDestroyContext( GLFBDevContextPtr context
)
799 GLFBDevContextPtr fbdevctx
= glFBDevGetCurrentContext();
802 if (fbdevctx
== context
) {
803 /* destroying current context */
804 _mesa_make_current(NULL
, NULL
, NULL
);
805 _mesa_notifyDestroy(&context
->glcontext
);
807 _mesa_free_context_data(&context
->glcontext
);
814 glFBDevGetContextAttrib( const GLFBDevContextPtr context
, int attrib
)
823 glFBDevGetCurrentContext( void )
825 GET_CURRENT_CONTEXT(ctx
);
826 return (GLFBDevContextPtr
) ctx
;
831 glFBDevMakeCurrent( GLFBDevContextPtr context
,
832 GLFBDevBufferPtr drawBuffer
,
833 GLFBDevBufferPtr readBuffer
)
835 if (context
&& drawBuffer
&& readBuffer
) {
836 /* Make sure the context's visual and the buffers' visuals match.
837 * XXX we might do this by comparing specific fields like bits_per_pixel,
838 * visual, etc. in the future.
840 if (context
->visual
!= drawBuffer
->visual
||
841 context
->visual
!= readBuffer
->visual
) {
844 _mesa_make_current( &context
->glcontext
,
845 &drawBuffer
->glframebuffer
,
846 &readBuffer
->glframebuffer
);
847 context
->drawBuffer
= drawBuffer
;
848 context
->readBuffer
= readBuffer
;
849 context
->curBuffer
= drawBuffer
;
853 _mesa_make_current( NULL
, NULL
, NULL
);
859 #endif /* USE_GLFBDEV_DRIVER */