2 * Copyright (C) 2008 George Sapountzis <gsap7@yahoo.gr>
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included
12 * in all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 * DRI software rasterizer
25 * This is the mesa swrast module packaged into a DRI driver structure.
27 * The front-buffer is allocated by the loader. The loader provides read/write
28 * callbacks for access to the front-buffer. The driver uses a scratch row for
29 * front-buffer rendering to avoid repeated calls to the loader.
31 * The back-buffer is allocated by the driver and is private.
34 #include "main/context.h"
35 #include "main/extensions.h"
36 #include "main/formats.h"
37 #include "main/framebuffer.h"
38 #include "main/imports.h"
39 #include "main/renderbuffer.h"
40 #include "swrast/swrast.h"
41 #include "swrast_setup/swrast_setup.h"
43 #include "tnl/t_context.h"
44 #include "tnl/t_pipeline.h"
46 #include "drivers/common/driverfuncs.h"
47 #include "drivers/common/meta.h"
50 #include "swrast_priv.h"
54 * Screen and config-related functions
58 setupLoaderExtensions(__DRIscreen
*psp
,
59 const __DRIextension
**extensions
)
63 for (i
= 0; extensions
[i
]; i
++) {
64 if (strcmp(extensions
[i
]->name
, __DRI_SWRAST_LOADER
) == 0)
65 psp
->swrast_loader
= (__DRIswrastLoaderExtension
*) extensions
[i
];
70 swrastFillInModes(__DRIscreen
*psp
,
71 unsigned pixel_bits
, unsigned depth_bits
,
72 unsigned stencil_bits
, GLboolean have_back_buffer
)
74 __DRIconfig
**configs
;
75 unsigned depth_buffer_factor
;
76 unsigned back_buffer_factor
;
80 /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
81 * support pageflipping at all.
83 static const GLenum back_buffer_modes
[] = {
84 GLX_NONE
, GLX_SWAP_UNDEFINED_OML
87 uint8_t depth_bits_array
[4];
88 uint8_t stencil_bits_array
[4];
89 uint8_t msaa_samples_array
[1];
91 depth_bits_array
[0] = 0;
92 depth_bits_array
[1] = 0;
93 depth_bits_array
[2] = depth_bits
;
94 depth_bits_array
[3] = depth_bits
;
96 /* Just like with the accumulation buffer, always provide some modes
97 * with a stencil buffer.
99 stencil_bits_array
[0] = 0;
100 stencil_bits_array
[1] = (stencil_bits
== 0) ? 8 : stencil_bits
;
101 stencil_bits_array
[2] = 0;
102 stencil_bits_array
[3] = (stencil_bits
== 0) ? 8 : stencil_bits
;
104 msaa_samples_array
[0] = 0;
106 depth_buffer_factor
= 4;
107 back_buffer_factor
= 2;
109 switch (pixel_bits
) {
112 fb_type
= GL_UNSIGNED_BYTE_2_3_3_REV
;
116 fb_type
= GL_UNSIGNED_SHORT_5_6_5
;
120 fb_type
= GL_UNSIGNED_INT_8_8_8_8_REV
;
124 fb_type
= GL_UNSIGNED_INT_8_8_8_8_REV
;
127 fprintf(stderr
, "[%s:%u] bad depth %d\n", __func__
, __LINE__
,
132 configs
= driCreateConfigs(fb_format
, fb_type
,
133 depth_bits_array
, stencil_bits_array
,
134 depth_buffer_factor
, back_buffer_modes
,
135 back_buffer_factor
, msaa_samples_array
, 1,
137 if (configs
== NULL
) {
138 fprintf(stderr
, "[%s:%u] Error creating FBConfig!\n", __func__
,
147 driCreateNewScreen(int scrn
, const __DRIextension
**extensions
,
148 const __DRIconfig
***driver_configs
, void *data
)
150 static const __DRIextension
*emptyExtensionList
[] = { NULL
};
152 __DRIconfig
**configs8
, **configs16
, **configs24
, **configs32
;
158 psp
= calloc(1, sizeof(*psp
));
162 setupLoaderExtensions(psp
, extensions
);
165 psp
->extensions
= emptyExtensionList
;
167 configs8
= swrastFillInModes(psp
, 8, 8, 0, 1);
168 configs16
= swrastFillInModes(psp
, 16, 16, 0, 1);
169 configs24
= swrastFillInModes(psp
, 24, 24, 8, 1);
170 configs32
= swrastFillInModes(psp
, 32, 24, 8, 1);
172 configs16
= driConcatConfigs(configs8
, configs16
);
173 configs24
= driConcatConfigs(configs16
, configs24
);
174 *driver_configs
= (const __DRIconfig
**)
175 driConcatConfigs(configs24
, configs32
);
177 driInitExtensions( NULL
, NULL
, GL_FALSE
);
182 static void driDestroyScreen(__DRIscreen
*psp
)
191 static const __DRIextension
**driGetExtensions(__DRIscreen
*psp
)
195 return psp
->extensions
;
200 * Framebuffer and renderbuffer-related functions.
204 choose_pixel_format(const GLvisual
*v
)
207 int depth
= v
->rgbBits
;
210 && v
->redMask
== 0xff0000
211 && v
->greenMask
== 0x00ff00
212 && v
->blueMask
== 0x0000ff)
215 && v
->redMask
== 0xff0000
216 && v
->greenMask
== 0x00ff00
217 && v
->blueMask
== 0x0000ff)
220 && v
->redMask
== 0xf800
221 && v
->greenMask
== 0x07e0
222 && v
->blueMask
== 0x001f)
225 && v
->redMask
== 0x07
226 && v
->greenMask
== 0x38
227 && v
->blueMask
== 0xc0)
231 if (v
->indexBits
== 8)
235 _mesa_problem( NULL
, "unexpected format in %s", __FUNCTION__
);
240 swrast_delete_renderbuffer(struct gl_renderbuffer
*rb
)
249 swrast_alloc_front_storage(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
250 GLenum internalFormat
, GLuint width
, GLuint height
)
252 struct swrast_renderbuffer
*xrb
= swrast_renderbuffer(rb
);
253 unsigned mask
= PITCH_ALIGN_BITS
- 1;
261 /* always pad to PITCH_ALIGN_BITS */
262 xrb
->pitch
= ((width
* xrb
->bpp
+ mask
) & ~mask
) / 8;
268 swrast_alloc_back_storage(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
269 GLenum internalFormat
, GLuint width
, GLuint height
)
271 struct swrast_renderbuffer
*xrb
= swrast_renderbuffer(rb
);
277 swrast_alloc_front_storage(ctx
, rb
, internalFormat
, width
, height
);
279 rb
->Data
= malloc(height
* xrb
->pitch
);
284 static struct swrast_renderbuffer
*
285 swrast_new_renderbuffer(const GLvisual
*visual
, GLboolean front
)
287 struct swrast_renderbuffer
*xrb
= calloc(1, sizeof *xrb
);
295 _mesa_init_renderbuffer(&xrb
->Base
, 0);
297 pixel_format
= choose_pixel_format(visual
);
299 xrb
->Base
.Delete
= swrast_delete_renderbuffer
;
301 xrb
->Base
.AllocStorage
= swrast_alloc_front_storage
;
302 swrast_set_span_funcs_front(xrb
, pixel_format
);
305 xrb
->Base
.AllocStorage
= swrast_alloc_back_storage
;
306 swrast_set_span_funcs_back(xrb
, pixel_format
);
309 switch (pixel_format
) {
311 xrb
->Base
.Format
= MESA_FORMAT_ARGB8888
;
312 xrb
->Base
.InternalFormat
= GL_RGBA
;
313 xrb
->Base
._BaseFormat
= GL_RGBA
;
314 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
318 xrb
->Base
.Format
= MESA_FORMAT_ARGB8888
; /* XXX */
319 xrb
->Base
.InternalFormat
= GL_RGB
;
320 xrb
->Base
._BaseFormat
= GL_RGB
;
321 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
325 xrb
->Base
.Format
= MESA_FORMAT_RGB565
;
326 xrb
->Base
.InternalFormat
= GL_RGB
;
327 xrb
->Base
._BaseFormat
= GL_RGB
;
328 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
332 xrb
->Base
.Format
= MESA_FORMAT_RGB332
;
333 xrb
->Base
.InternalFormat
= GL_RGB
;
334 xrb
->Base
._BaseFormat
= GL_RGB
;
335 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
339 xrb
->Base
.Format
= MESA_FORMAT_CI8
;
340 xrb
->Base
.InternalFormat
= GL_COLOR_INDEX8_EXT
;
341 xrb
->Base
._BaseFormat
= GL_COLOR_INDEX
;
342 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
352 static __DRIdrawable
*
353 driCreateNewDrawable(__DRIscreen
*screen
,
354 const __DRIconfig
*config
, void *data
)
357 struct swrast_renderbuffer
*frontrb
, *backrb
;
361 buf
= calloc(1, sizeof *buf
);
365 buf
->loaderPrivate
= data
;
367 buf
->driScreenPriv
= screen
;
369 buf
->row
= malloc(MAX_WIDTH
* 4);
371 /* basic framebuffer setup */
372 _mesa_initialize_window_framebuffer(&buf
->Base
, &config
->modes
);
374 /* add front renderbuffer */
375 frontrb
= swrast_new_renderbuffer(&config
->modes
, GL_TRUE
);
376 _mesa_add_renderbuffer(&buf
->Base
, BUFFER_FRONT_LEFT
, &frontrb
->Base
);
378 /* add back renderbuffer */
379 if (config
->modes
.doubleBufferMode
) {
380 backrb
= swrast_new_renderbuffer(&config
->modes
, GL_FALSE
);
381 _mesa_add_renderbuffer(&buf
->Base
, BUFFER_BACK_LEFT
, &backrb
->Base
);
384 /* add software renderbuffers */
385 _mesa_add_soft_renderbuffers(&buf
->Base
,
386 GL_FALSE
, /* color */
387 config
->modes
.haveDepthBuffer
,
388 config
->modes
.haveStencilBuffer
,
389 config
->modes
.haveAccumBuffer
,
390 GL_FALSE
, /* alpha */
391 GL_FALSE
/* aux bufs */);
397 driDestroyDrawable(__DRIdrawable
*buf
)
402 struct gl_framebuffer
*fb
= &buf
->Base
;
406 fb
->DeletePending
= GL_TRUE
;
407 _mesa_reference_framebuffer(&fb
, NULL
);
411 static void driSwapBuffers(__DRIdrawable
*buf
)
413 GET_CURRENT_CONTEXT(ctx
);
415 struct swrast_renderbuffer
*frontrb
=
416 swrast_renderbuffer(buf
->Base
.Attachment
[BUFFER_FRONT_LEFT
].Renderbuffer
);
417 struct swrast_renderbuffer
*backrb
=
418 swrast_renderbuffer(buf
->Base
.Attachment
[BUFFER_BACK_LEFT
].Renderbuffer
);
420 __DRIscreen
*screen
= buf
->driScreenPriv
;
424 /* check for signle-buffered */
428 /* check if swapping currently bound buffer */
429 if (ctx
&& ctx
->DrawBuffer
== &(buf
->Base
)) {
430 /* flush pending rendering */
431 _mesa_notifySwapBuffers(ctx
);
434 screen
->swrast_loader
->putImage(buf
, __DRI_SWRAST_IMAGE_OP_SWAP
,
437 frontrb
->Base
.Height
,
444 * General device driver functions.
448 get_window_size( GLframebuffer
*fb
, GLsizei
*w
, GLsizei
*h
)
450 __DRIdrawable
*buf
= swrast_drawable(fb
);
451 __DRIscreen
*screen
= buf
->driScreenPriv
;
454 screen
->swrast_loader
->getDrawableInfo(buf
,
460 swrast_check_and_update_window_size( GLcontext
*ctx
, GLframebuffer
*fb
)
462 GLsizei width
, height
;
464 get_window_size(fb
, &width
, &height
);
465 if (fb
->Width
!= width
|| fb
->Height
!= height
) {
466 _mesa_resize_framebuffer(ctx
, fb
, width
, height
);
470 static const GLubyte
*
471 get_string(GLcontext
*ctx
, GLenum pname
)
476 return (const GLubyte
*) "Mesa Project";
478 return (const GLubyte
*) "Software Rasterizer";
485 update_state( GLcontext
*ctx
, GLuint new_state
)
487 /* not much to do here - pass it on */
488 _swrast_InvalidateState( ctx
, new_state
);
489 _swsetup_InvalidateState( ctx
, new_state
);
490 _vbo_InvalidateState( ctx
, new_state
);
491 _tnl_InvalidateState( ctx
, new_state
);
495 viewport(GLcontext
*ctx
, GLint x
, GLint y
, GLsizei w
, GLsizei h
)
497 GLframebuffer
*draw
= ctx
->WinSysDrawBuffer
;
498 GLframebuffer
*read
= ctx
->WinSysReadBuffer
;
500 swrast_check_and_update_window_size(ctx
, draw
);
501 swrast_check_and_update_window_size(ctx
, read
);
505 swrast_init_driver_functions(struct dd_function_table
*driver
)
507 driver
->GetString
= get_string
;
508 driver
->UpdateState
= update_state
;
509 driver
->GetBufferSize
= NULL
;
510 driver
->Viewport
= viewport
;
515 * Context-related functions.
518 static __DRIcontext
*
519 driCreateNewContext(__DRIscreen
*screen
, const __DRIconfig
*config
,
520 __DRIcontext
*shared
, void *data
)
524 struct dd_function_table functions
;
528 ctx
= calloc(1, sizeof *ctx
);
532 ctx
->loaderPrivate
= data
;
534 ctx
->driScreenPriv
= screen
;
536 /* build table of device driver functions */
537 _mesa_init_driver_functions(&functions
);
538 swrast_init_driver_functions(&functions
);
540 if (!_mesa_initialize_context(&ctx
->Base
, &config
->modes
,
541 shared
? &shared
->Base
: NULL
,
542 &functions
, (void *) ctx
)) {
547 mesaCtx
= &ctx
->Base
;
549 /* do bounds checking to prevent segfaults and server crashes! */
550 mesaCtx
->Const
.CheckArrayBounds
= GL_TRUE
;
552 /* create module contexts */
553 _swrast_CreateContext( mesaCtx
);
554 _vbo_CreateContext( mesaCtx
);
555 _tnl_CreateContext( mesaCtx
);
556 _swsetup_CreateContext( mesaCtx
);
557 _swsetup_Wakeup( mesaCtx
);
559 /* use default TCL pipeline */
561 TNLcontext
*tnl
= TNL_CONTEXT(mesaCtx
);
562 tnl
->Driver
.RunPipeline
= _tnl_run_pipeline
;
565 _mesa_enable_sw_extensions(mesaCtx
);
566 _mesa_enable_1_3_extensions(mesaCtx
);
567 _mesa_enable_1_4_extensions(mesaCtx
);
568 _mesa_enable_1_5_extensions(mesaCtx
);
569 _mesa_enable_2_0_extensions(mesaCtx
);
570 _mesa_enable_2_1_extensions(mesaCtx
);
572 _mesa_meta_init(mesaCtx
);
578 driDestroyContext(__DRIcontext
*ctx
)
584 mesaCtx
= &ctx
->Base
;
585 _mesa_meta_free(mesaCtx
);
586 _swsetup_DestroyContext( mesaCtx
);
587 _swrast_DestroyContext( mesaCtx
);
588 _tnl_DestroyContext( mesaCtx
);
589 _vbo_DestroyContext( mesaCtx
);
590 _mesa_destroy_context( mesaCtx
);
595 driCopyContext(__DRIcontext
*dst
, __DRIcontext
*src
, unsigned long mask
)
599 _mesa_copy_context(&src
->Base
, &dst
->Base
, mask
);
603 static int driBindContext(__DRIcontext
*ctx
,
608 GLframebuffer
*mesaDraw
;
609 GLframebuffer
*mesaRead
;
616 mesaCtx
= &ctx
->Base
;
617 mesaDraw
= &draw
->Base
;
618 mesaRead
= &read
->Base
;
620 /* check for same context and buffer */
621 if (mesaCtx
== _mesa_get_current_context()
622 && mesaCtx
->DrawBuffer
== mesaDraw
623 && mesaCtx
->ReadBuffer
== mesaRead
) {
627 _glapi_check_multithread();
629 swrast_check_and_update_window_size(mesaCtx
, mesaDraw
);
631 swrast_check_and_update_window_size(mesaCtx
, mesaRead
);
633 _mesa_make_current( mesaCtx
,
639 _mesa_make_current( NULL
, NULL
, NULL
);
645 static int driUnbindContext(__DRIcontext
*ctx
)
653 static const __DRIcoreExtension driCoreExtension
= {
654 { __DRI_CORE
, __DRI_CORE_VERSION
},
655 NULL
, /* driCreateNewScreen */
659 driIndexConfigAttrib
,
660 NULL
, /* driCreateNewDrawable */
670 static const __DRIswrastExtension driSWRastExtension
= {
671 { __DRI_SWRAST
, __DRI_SWRAST_VERSION
},
676 /* This is the table of extensions that the loader will dlsym() for. */
677 PUBLIC
const __DRIextension
*__driDriverExtensions
[] = {
678 &driCoreExtension
.base
,
679 &driSWRastExtension
.base
,