2 * Copyright 2008, 2010 George Sapountzis <gsapountzis@gmail.com>
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
57 static const __DRIextension
*dri_screen_extensions
[] = {
62 swrastFillInModes(__DRIscreen
*psp
,
63 unsigned pixel_bits
, unsigned depth_bits
,
64 unsigned stencil_bits
, GLboolean have_back_buffer
)
66 __DRIconfig
**configs
;
67 unsigned depth_buffer_factor
;
68 unsigned back_buffer_factor
;
72 /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
73 * support pageflipping at all.
75 static const GLenum back_buffer_modes
[] = {
76 GLX_NONE
, GLX_SWAP_UNDEFINED_OML
79 uint8_t depth_bits_array
[4];
80 uint8_t stencil_bits_array
[4];
81 uint8_t msaa_samples_array
[1];
83 depth_bits_array
[0] = 0;
84 depth_bits_array
[1] = 0;
85 depth_bits_array
[2] = depth_bits
;
86 depth_bits_array
[3] = depth_bits
;
88 /* Just like with the accumulation buffer, always provide some modes
89 * with a stencil buffer.
91 stencil_bits_array
[0] = 0;
92 stencil_bits_array
[1] = (stencil_bits
== 0) ? 8 : stencil_bits
;
93 stencil_bits_array
[2] = 0;
94 stencil_bits_array
[3] = (stencil_bits
== 0) ? 8 : stencil_bits
;
96 msaa_samples_array
[0] = 0;
98 depth_buffer_factor
= 4;
99 back_buffer_factor
= 2;
101 switch (pixel_bits
) {
104 fb_type
= GL_UNSIGNED_BYTE_2_3_3_REV
;
108 fb_type
= GL_UNSIGNED_SHORT_5_6_5
;
112 fb_type
= GL_UNSIGNED_INT_8_8_8_8_REV
;
116 fb_type
= GL_UNSIGNED_INT_8_8_8_8_REV
;
119 fprintf(stderr
, "[%s:%u] bad depth %d\n", __func__
, __LINE__
,
124 configs
= driCreateConfigs(fb_format
, fb_type
,
125 depth_bits_array
, stencil_bits_array
,
126 depth_buffer_factor
, back_buffer_modes
,
127 back_buffer_factor
, msaa_samples_array
, 1,
129 if (configs
== NULL
) {
130 fprintf(stderr
, "[%s:%u] Error creating FBConfig!\n", __func__
,
138 static const __DRIconfig
**
139 dri_init_screen(__DRIscreen
* psp
)
141 __DRIconfig
**configs8
, **configs16
, **configs24
, **configs32
;
145 psp
->extensions
= dri_screen_extensions
;
147 configs8
= swrastFillInModes(psp
, 8, 8, 0, 1);
148 configs16
= swrastFillInModes(psp
, 16, 16, 0, 1);
149 configs24
= swrastFillInModes(psp
, 24, 24, 8, 1);
150 configs32
= swrastFillInModes(psp
, 32, 24, 8, 1);
152 configs16
= driConcatConfigs(configs8
, configs16
);
153 configs24
= driConcatConfigs(configs16
, configs24
);
154 configs32
= driConcatConfigs(configs24
, configs32
);
156 return (const __DRIconfig
**)configs32
;
160 dri_destroy_screen(__DRIscreen
* sPriv
)
167 * Framebuffer and renderbuffer-related functions.
171 choose_pixel_format(const GLvisual
*v
)
173 int depth
= v
->rgbBits
;
176 && v
->redMask
== 0xff0000
177 && v
->greenMask
== 0x00ff00
178 && v
->blueMask
== 0x0000ff)
181 && v
->redMask
== 0xff0000
182 && v
->greenMask
== 0x00ff00
183 && v
->blueMask
== 0x0000ff)
186 && v
->redMask
== 0xf800
187 && v
->greenMask
== 0x07e0
188 && v
->blueMask
== 0x001f)
191 && v
->redMask
== 0x07
192 && v
->greenMask
== 0x38
193 && v
->blueMask
== 0xc0)
196 _mesa_problem( NULL
, "unexpected format in %s", __FUNCTION__
);
201 swrast_delete_renderbuffer(struct gl_renderbuffer
*rb
)
209 /* see bytes_per_line in libGL */
211 bytes_per_line(unsigned pitch_bits
, unsigned mul
)
213 unsigned mask
= mul
- 1;
215 return ((pitch_bits
+ mask
) & ~mask
) / 8;
219 swrast_alloc_front_storage(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
220 GLenum internalFormat
, GLuint width
, GLuint height
)
222 struct swrast_renderbuffer
*xrb
= swrast_renderbuffer(rb
);
230 xrb
->pitch
= bytes_per_line(width
* xrb
->bpp
, 32);
236 swrast_alloc_back_storage(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
237 GLenum internalFormat
, GLuint width
, GLuint height
)
239 struct swrast_renderbuffer
*xrb
= swrast_renderbuffer(rb
);
245 swrast_alloc_front_storage(ctx
, rb
, internalFormat
, width
, height
);
247 rb
->Data
= malloc(height
* xrb
->pitch
);
252 static struct swrast_renderbuffer
*
253 swrast_new_renderbuffer(const GLvisual
*visual
, GLboolean front
)
255 struct swrast_renderbuffer
*xrb
= calloc(1, sizeof *xrb
);
263 _mesa_init_renderbuffer(&xrb
->Base
, 0);
265 pixel_format
= choose_pixel_format(visual
);
267 xrb
->Base
.Delete
= swrast_delete_renderbuffer
;
269 xrb
->Base
.AllocStorage
= swrast_alloc_front_storage
;
270 swrast_set_span_funcs_front(xrb
, pixel_format
);
273 xrb
->Base
.AllocStorage
= swrast_alloc_back_storage
;
274 swrast_set_span_funcs_back(xrb
, pixel_format
);
277 switch (pixel_format
) {
279 xrb
->Base
.Format
= MESA_FORMAT_ARGB8888
;
280 xrb
->Base
.InternalFormat
= GL_RGBA
;
281 xrb
->Base
._BaseFormat
= GL_RGBA
;
282 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
286 xrb
->Base
.Format
= MESA_FORMAT_ARGB8888
; /* XXX */
287 xrb
->Base
.InternalFormat
= GL_RGB
;
288 xrb
->Base
._BaseFormat
= GL_RGB
;
289 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
293 xrb
->Base
.Format
= MESA_FORMAT_RGB565
;
294 xrb
->Base
.InternalFormat
= GL_RGB
;
295 xrb
->Base
._BaseFormat
= GL_RGB
;
296 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
300 xrb
->Base
.Format
= MESA_FORMAT_RGB332
;
301 xrb
->Base
.InternalFormat
= GL_RGB
;
302 xrb
->Base
._BaseFormat
= GL_RGB
;
303 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
314 dri_create_buffer(__DRIscreen
* sPriv
,
315 __DRIdrawable
* dPriv
,
316 const __GLcontextModes
* visual
, GLboolean isPixmap
)
318 struct dri_drawable
*drawable
= NULL
;
320 struct swrast_renderbuffer
*frontrb
, *backrb
;
324 drawable
= CALLOC_STRUCT(dri_drawable
);
325 if (drawable
== NULL
)
328 dPriv
->driverPrivate
= drawable
;
329 drawable
->dPriv
= dPriv
;
331 drawable
->row
= malloc(MAX_WIDTH
* 4);
332 if (drawable
->row
== NULL
)
335 fb
= &drawable
->Base
;
337 /* basic framebuffer setup */
338 _mesa_initialize_window_framebuffer(fb
, visual
);
340 /* add front renderbuffer */
341 frontrb
= swrast_new_renderbuffer(visual
, GL_TRUE
);
342 _mesa_add_renderbuffer(fb
, BUFFER_FRONT_LEFT
, &frontrb
->Base
);
344 /* add back renderbuffer */
345 if (visual
->doubleBufferMode
) {
346 backrb
= swrast_new_renderbuffer(visual
, GL_FALSE
);
347 _mesa_add_renderbuffer(fb
, BUFFER_BACK_LEFT
, &backrb
->Base
);
350 /* add software renderbuffers */
351 _mesa_add_soft_renderbuffers(fb
,
352 GL_FALSE
, /* color */
353 visual
->haveDepthBuffer
,
354 visual
->haveStencilBuffer
,
355 visual
->haveAccumBuffer
,
356 GL_FALSE
, /* alpha */
357 GL_FALSE
/* aux bufs */);
372 dri_destroy_buffer(__DRIdrawable
* dPriv
)
377 struct dri_drawable
*drawable
= dri_drawable(dPriv
);
382 fb
= &drawable
->Base
;
384 fb
->DeletePending
= GL_TRUE
;
385 _mesa_reference_framebuffer(&fb
, NULL
);
390 dri_swap_buffers(__DRIdrawable
* dPriv
)
392 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
394 GET_CURRENT_CONTEXT(ctx
);
396 struct dri_drawable
*drawable
= dri_drawable(dPriv
);
398 struct swrast_renderbuffer
*frontrb
, *backrb
;
402 fb
= &drawable
->Base
;
405 swrast_renderbuffer(fb
->Attachment
[BUFFER_FRONT_LEFT
].Renderbuffer
);
407 swrast_renderbuffer(fb
->Attachment
[BUFFER_BACK_LEFT
].Renderbuffer
);
409 /* check for signle-buffered */
413 /* check if swapping currently bound buffer */
414 if (ctx
&& ctx
->DrawBuffer
== fb
) {
415 /* flush pending rendering */
416 _mesa_notifySwapBuffers(ctx
);
419 sPriv
->swrast_loader
->putImage(dPriv
, __DRI_SWRAST_IMAGE_OP_SWAP
,
422 frontrb
->Base
.Height
,
424 dPriv
->loaderPrivate
);
429 * General device driver functions.
433 get_window_size( GLframebuffer
*fb
, GLsizei
*w
, GLsizei
*h
)
435 __DRIdrawable
*dPriv
= swrast_drawable(fb
)->dPriv
;
436 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
439 sPriv
->swrast_loader
->getDrawableInfo(dPriv
,
441 dPriv
->loaderPrivate
);
445 swrast_check_and_update_window_size( GLcontext
*ctx
, GLframebuffer
*fb
)
447 GLsizei width
, height
;
449 get_window_size(fb
, &width
, &height
);
450 if (fb
->Width
!= width
|| fb
->Height
!= height
) {
451 _mesa_resize_framebuffer(ctx
, fb
, width
, height
);
455 static const GLubyte
*
456 get_string(GLcontext
*ctx
, GLenum pname
)
461 return (const GLubyte
*) "Mesa Project";
463 return (const GLubyte
*) "Software Rasterizer";
470 update_state( GLcontext
*ctx
, GLuint new_state
)
472 /* not much to do here - pass it on */
473 _swrast_InvalidateState( ctx
, new_state
);
474 _swsetup_InvalidateState( ctx
, new_state
);
475 _vbo_InvalidateState( ctx
, new_state
);
476 _tnl_InvalidateState( ctx
, new_state
);
480 viewport(GLcontext
*ctx
, GLint x
, GLint y
, GLsizei w
, GLsizei h
)
482 GLframebuffer
*draw
= ctx
->WinSysDrawBuffer
;
483 GLframebuffer
*read
= ctx
->WinSysReadBuffer
;
485 swrast_check_and_update_window_size(ctx
, draw
);
486 swrast_check_and_update_window_size(ctx
, read
);
490 swrast_init_driver_functions(struct dd_function_table
*driver
)
492 driver
->GetString
= get_string
;
493 driver
->UpdateState
= update_state
;
494 driver
->GetBufferSize
= NULL
;
495 driver
->Viewport
= viewport
;
500 * Context-related functions.
504 dri_create_context(const __GLcontextModes
* visual
,
505 __DRIcontext
* cPriv
, void *sharedContextPrivate
)
507 struct dri_context
*ctx
= NULL
;
508 struct dri_context
*share
= (struct dri_context
*)sharedContextPrivate
;
509 GLcontext
*mesaCtx
= NULL
;
510 GLcontext
*sharedCtx
= NULL
;
511 struct dd_function_table functions
;
515 ctx
= CALLOC_STRUCT(dri_context
);
519 cPriv
->driverPrivate
= ctx
;
522 /* build table of device driver functions */
523 _mesa_init_driver_functions(&functions
);
524 swrast_init_driver_functions(&functions
);
527 sharedCtx
= &share
->Base
;
530 mesaCtx
= &ctx
->Base
;
532 /* basic context setup */
533 if (!_mesa_initialize_context(mesaCtx
, visual
, sharedCtx
, &functions
, (void *) cPriv
)) {
537 /* do bounds checking to prevent segfaults and server crashes! */
538 mesaCtx
->Const
.CheckArrayBounds
= GL_TRUE
;
540 /* create module contexts */
541 _swrast_CreateContext( mesaCtx
);
542 _vbo_CreateContext( mesaCtx
);
543 _tnl_CreateContext( mesaCtx
);
544 _swsetup_CreateContext( mesaCtx
);
545 _swsetup_Wakeup( mesaCtx
);
547 /* use default TCL pipeline */
549 TNLcontext
*tnl
= TNL_CONTEXT(mesaCtx
);
550 tnl
->Driver
.RunPipeline
= _tnl_run_pipeline
;
553 _mesa_enable_sw_extensions(mesaCtx
);
554 _mesa_enable_1_3_extensions(mesaCtx
);
555 _mesa_enable_1_4_extensions(mesaCtx
);
556 _mesa_enable_1_5_extensions(mesaCtx
);
557 _mesa_enable_2_0_extensions(mesaCtx
);
558 _mesa_enable_2_1_extensions(mesaCtx
);
560 _mesa_meta_init(mesaCtx
);
562 driInitExtensions( mesaCtx
, NULL
, GL_FALSE
);
574 dri_destroy_context(__DRIcontext
* cPriv
)
579 struct dri_context
*ctx
= dri_context(cPriv
);
582 mesaCtx
= &ctx
->Base
;
584 _mesa_meta_free(mesaCtx
);
585 _swsetup_DestroyContext( mesaCtx
);
586 _swrast_DestroyContext( mesaCtx
);
587 _tnl_DestroyContext( mesaCtx
);
588 _vbo_DestroyContext( mesaCtx
);
589 _mesa_destroy_context( mesaCtx
);
594 dri_make_current(__DRIcontext
* cPriv
,
595 __DRIdrawable
* driDrawPriv
,
596 __DRIdrawable
* driReadPriv
)
599 GLframebuffer
*mesaDraw
;
600 GLframebuffer
*mesaRead
;
604 struct dri_context
*ctx
= dri_context(cPriv
);
605 struct dri_drawable
*draw
;
606 struct dri_drawable
*read
;
608 if (!driDrawPriv
|| !driReadPriv
)
611 draw
= dri_drawable(driDrawPriv
);
612 read
= dri_drawable(driReadPriv
);
613 mesaCtx
= &ctx
->Base
;
614 mesaDraw
= &draw
->Base
;
615 mesaRead
= &read
->Base
;
617 /* check for same context and buffer */
618 if (mesaCtx
== _mesa_get_current_context()
619 && mesaCtx
->DrawBuffer
== mesaDraw
620 && mesaCtx
->ReadBuffer
== mesaRead
) {
624 _glapi_check_multithread();
626 swrast_check_and_update_window_size(mesaCtx
, mesaDraw
);
627 if (mesaRead
!= mesaDraw
)
628 swrast_check_and_update_window_size(mesaCtx
, mesaRead
);
630 _mesa_make_current( mesaCtx
,
636 _mesa_make_current( NULL
, NULL
, NULL
);
643 dri_unbind_context(__DRIcontext
* cPriv
)
651 const struct __DriverAPIRec driDriverAPI
= {
652 .InitScreen
= dri_init_screen
,
653 .DestroyScreen
= dri_destroy_screen
,
654 .CreateContext
= dri_create_context
,
655 .DestroyContext
= dri_destroy_context
,
656 .CreateBuffer
= dri_create_buffer
,
657 .DestroyBuffer
= dri_destroy_buffer
,
658 .SwapBuffers
= dri_swap_buffers
,
659 .MakeCurrent
= dri_make_current
,
660 .UnbindContext
= dri_unbind_context
,
663 /* This is the table of extensions that the loader will dlsym() for. */
664 PUBLIC
const __DRIextension
*__driDriverExtensions
[] = {
665 &driCoreExtension
.base
,
666 &driSWRastExtension
.base
,