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/s_renderbuffer.h"
42 #include "swrast_setup/swrast_setup.h"
44 #include "tnl/t_context.h"
45 #include "tnl/t_pipeline.h"
47 #include "drivers/common/driverfuncs.h"
48 #include "drivers/common/meta.h"
51 #include "main/teximage.h"
52 #include "main/texformat.h"
53 #include "main/texstate.h"
55 #include "swrast_priv.h"
56 #include "swrast/s_context.h"
60 * Screen and config-related functions
63 static void swrastSetTexBuffer2(__DRIcontext
*pDRICtx
, GLint target
,
64 GLint texture_format
, __DRIdrawable
*dPriv
)
66 struct dri_context
*dri_ctx
;
68 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
69 struct gl_texture_unit
*texUnit
;
70 struct gl_texture_object
*texObj
;
71 struct gl_texture_image
*texImage
;
72 struct swrast_texture_image
*swImage
;
73 uint32_t internalFormat
;
76 dri_ctx
= pDRICtx
->driverPrivate
;
78 internalFormat
= (texture_format
== __DRI_TEXTURE_FORMAT_RGB
? 3 : 4);
80 texUnit
= _mesa_get_current_tex_unit(&dri_ctx
->Base
);
81 texObj
= _mesa_select_tex_object(&dri_ctx
->Base
, texUnit
, target
);
82 texImage
= _mesa_get_tex_image(&dri_ctx
->Base
, texObj
, target
, 0);
83 swImage
= swrast_texture_image(texImage
);
85 _mesa_lock_texture(&dri_ctx
->Base
, texObj
);
87 sPriv
->swrast_loader
->getDrawableInfo(dPriv
, &x
, &y
, &w
, &h
, dPriv
->loaderPrivate
);
89 if (texture_format
== __DRI_TEXTURE_FORMAT_RGB
)
90 texFormat
= MESA_FORMAT_XRGB8888
;
92 texFormat
= MESA_FORMAT_ARGB8888
;
94 _mesa_init_teximage_fields(&dri_ctx
->Base
, target
, texImage
,
95 w
, h
, 1, 0, internalFormat
, texFormat
);
97 sPriv
->swrast_loader
->getImage(dPriv
, x
, y
, w
, h
, (char *)swImage
->Data
,
98 dPriv
->loaderPrivate
);
100 _mesa_unlock_texture(&dri_ctx
->Base
, texObj
);
103 static void swrastSetTexBuffer(__DRIcontext
*pDRICtx
, GLint target
,
104 __DRIdrawable
*dPriv
)
106 swrastSetTexBuffer2(pDRICtx
, target
, __DRI_TEXTURE_FORMAT_RGBA
, dPriv
);
109 static const __DRItexBufferExtension swrastTexBufferExtension
= {
110 { __DRI_TEX_BUFFER
, __DRI_TEX_BUFFER_VERSION
},
115 static const __DRIextension
*dri_screen_extensions
[] = {
116 &swrastTexBufferExtension
.base
,
120 static __DRIconfig
**
121 swrastFillInModes(__DRIscreen
*psp
,
122 unsigned pixel_bits
, unsigned depth_bits
,
123 unsigned stencil_bits
, GLboolean have_back_buffer
)
125 __DRIconfig
**configs
;
126 unsigned depth_buffer_factor
;
127 unsigned back_buffer_factor
;
131 /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
132 * support pageflipping at all.
134 static const GLenum back_buffer_modes
[] = {
135 GLX_NONE
, GLX_SWAP_UNDEFINED_OML
138 uint8_t depth_bits_array
[4];
139 uint8_t stencil_bits_array
[4];
140 uint8_t msaa_samples_array
[1];
143 (void) have_back_buffer
;
145 depth_bits_array
[0] = 0;
146 depth_bits_array
[1] = 0;
147 depth_bits_array
[2] = depth_bits
;
148 depth_bits_array
[3] = depth_bits
;
150 /* Just like with the accumulation buffer, always provide some modes
151 * with a stencil buffer.
153 stencil_bits_array
[0] = 0;
154 stencil_bits_array
[1] = (stencil_bits
== 0) ? 8 : stencil_bits
;
155 stencil_bits_array
[2] = 0;
156 stencil_bits_array
[3] = (stencil_bits
== 0) ? 8 : stencil_bits
;
158 msaa_samples_array
[0] = 0;
160 depth_buffer_factor
= 4;
161 back_buffer_factor
= 2;
163 switch (pixel_bits
) {
166 fb_type
= GL_UNSIGNED_BYTE_2_3_3_REV
;
170 fb_type
= GL_UNSIGNED_SHORT_5_6_5
;
174 fb_type
= GL_UNSIGNED_INT_8_8_8_8_REV
;
178 fb_type
= GL_UNSIGNED_INT_8_8_8_8_REV
;
181 fprintf(stderr
, "[%s:%u] bad depth %d\n", __func__
, __LINE__
,
186 configs
= driCreateConfigs(fb_format
, fb_type
,
187 depth_bits_array
, stencil_bits_array
,
188 depth_buffer_factor
, back_buffer_modes
,
189 back_buffer_factor
, msaa_samples_array
, 1,
191 if (configs
== NULL
) {
192 fprintf(stderr
, "[%s:%u] Error creating FBConfig!\n", __func__
,
200 static const __DRIconfig
**
201 dri_init_screen(__DRIscreen
* psp
)
203 __DRIconfig
**configs8
, **configs16
, **configs24
, **configs32
;
207 psp
->extensions
= dri_screen_extensions
;
209 configs8
= swrastFillInModes(psp
, 8, 8, 0, 1);
210 configs16
= swrastFillInModes(psp
, 16, 16, 0, 1);
211 configs24
= swrastFillInModes(psp
, 24, 24, 8, 1);
212 configs32
= swrastFillInModes(psp
, 32, 24, 8, 1);
214 configs16
= driConcatConfigs(configs8
, configs16
);
215 configs24
= driConcatConfigs(configs16
, configs24
);
216 configs32
= driConcatConfigs(configs24
, configs32
);
218 return (const __DRIconfig
**)configs32
;
222 dri_destroy_screen(__DRIscreen
* sPriv
)
230 * Framebuffer and renderbuffer-related functions.
234 choose_pixel_format(const struct gl_config
*v
)
236 int depth
= v
->rgbBits
;
239 && v
->redMask
== 0xff0000
240 && v
->greenMask
== 0x00ff00
241 && v
->blueMask
== 0x0000ff)
244 && v
->redMask
== 0xff0000
245 && v
->greenMask
== 0x00ff00
246 && v
->blueMask
== 0x0000ff)
249 && v
->redMask
== 0xf800
250 && v
->greenMask
== 0x07e0
251 && v
->blueMask
== 0x001f)
254 && v
->redMask
== 0x07
255 && v
->greenMask
== 0x38
256 && v
->blueMask
== 0xc0)
259 _mesa_problem( NULL
, "unexpected format in %s", __FUNCTION__
);
264 swrast_delete_renderbuffer(struct gl_renderbuffer
*rb
)
272 /* see bytes_per_line in libGL */
274 bytes_per_line(unsigned pitch_bits
, unsigned mul
)
276 unsigned mask
= mul
- 1;
278 return ((pitch_bits
+ mask
) & ~mask
) / 8;
282 swrast_alloc_front_storage(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
283 GLenum internalFormat
, GLuint width
, GLuint height
)
285 struct swrast_renderbuffer
*xrb
= swrast_renderbuffer(rb
);
290 (void) internalFormat
;
295 rb
->RowStride
= width
;
296 xrb
->pitch
= bytes_per_line(width
* xrb
->bpp
, 32);
302 swrast_alloc_back_storage(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
303 GLenum internalFormat
, GLuint width
, GLuint height
)
305 struct swrast_renderbuffer
*xrb
= swrast_renderbuffer(rb
);
311 swrast_alloc_front_storage(ctx
, rb
, internalFormat
, width
, height
);
313 rb
->Data
= malloc(height
* xrb
->pitch
);
318 static struct swrast_renderbuffer
*
319 swrast_new_renderbuffer(const struct gl_config
*visual
, __DRIdrawable
*dPriv
,
322 struct swrast_renderbuffer
*xrb
= calloc(1, sizeof *xrb
);
330 _mesa_init_renderbuffer(&xrb
->Base
, 0);
332 pixel_format
= choose_pixel_format(visual
);
335 xrb
->Base
.Delete
= swrast_delete_renderbuffer
;
337 xrb
->Base
.AllocStorage
= swrast_alloc_front_storage
;
338 swrast_set_span_funcs_front(xrb
, pixel_format
);
341 xrb
->Base
.AllocStorage
= swrast_alloc_back_storage
;
342 swrast_set_span_funcs_back(xrb
, pixel_format
);
345 switch (pixel_format
) {
347 xrb
->Base
.Format
= MESA_FORMAT_ARGB8888
;
348 xrb
->Base
.InternalFormat
= GL_RGBA
;
349 xrb
->Base
._BaseFormat
= GL_RGBA
;
350 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
354 xrb
->Base
.Format
= MESA_FORMAT_ARGB8888
; /* XXX */
355 xrb
->Base
.InternalFormat
= GL_RGB
;
356 xrb
->Base
._BaseFormat
= GL_RGB
;
357 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
361 xrb
->Base
.Format
= MESA_FORMAT_RGB565
;
362 xrb
->Base
.InternalFormat
= GL_RGB
;
363 xrb
->Base
._BaseFormat
= GL_RGB
;
364 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
368 xrb
->Base
.Format
= MESA_FORMAT_RGB332
;
369 xrb
->Base
.InternalFormat
= GL_RGB
;
370 xrb
->Base
._BaseFormat
= GL_RGB
;
371 xrb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
382 swrast_map_renderbuffer(struct gl_context
*ctx
,
383 struct gl_renderbuffer
*rb
,
384 GLuint x
, GLuint y
, GLuint w
, GLuint h
,
389 struct swrast_renderbuffer
*xrb
= swrast_renderbuffer(rb
);
390 GLubyte
*map
= rb
->Data
;
391 int cpp
= _mesa_get_format_bytes(rb
->Format
);
392 int stride
= rb
->RowStride
* cpp
;
394 if (rb
->AllocStorage
== swrast_alloc_front_storage
) {
395 __DRIdrawable
*dPriv
= xrb
->dPriv
;
396 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
398 xrb
->map_mode
= mode
;
405 rb
->Data
= malloc(h
* stride
);
407 sPriv
->swrast_loader
->getImage(dPriv
, x
, y
, w
, h
,
409 dPriv
->loaderPrivate
);
412 *out_stride
= stride
;
418 if (rb
->AllocStorage
== swrast_alloc_back_storage
) {
419 map
+= (rb
->Height
- 1) * stride
;
423 map
+= (GLsizei
)y
* stride
;
424 map
+= (GLsizei
)x
* cpp
;
427 *out_stride
= stride
;
431 swrast_unmap_renderbuffer(struct gl_context
*ctx
,
432 struct gl_renderbuffer
*rb
)
434 struct swrast_renderbuffer
*xrb
= swrast_renderbuffer(rb
);
436 if (rb
->AllocStorage
== swrast_alloc_front_storage
) {
437 __DRIdrawable
*dPriv
= xrb
->dPriv
;
438 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
440 if (xrb
->map_mode
& GL_MAP_WRITE_BIT
) {
441 sPriv
->swrast_loader
->putImage(dPriv
, __DRI_SWRAST_IMAGE_OP_DRAW
,
442 xrb
->map_x
, xrb
->map_y
,
443 xrb
->map_w
, xrb
->map_h
,
445 dPriv
->loaderPrivate
);
454 dri_create_buffer(__DRIscreen
* sPriv
,
455 __DRIdrawable
* dPriv
,
456 const struct gl_config
* visual
, GLboolean isPixmap
)
458 struct dri_drawable
*drawable
= NULL
;
459 struct gl_framebuffer
*fb
;
460 struct swrast_renderbuffer
*frontrb
, *backrb
;
467 drawable
= CALLOC_STRUCT(dri_drawable
);
468 if (drawable
== NULL
)
471 dPriv
->driverPrivate
= drawable
;
472 drawable
->dPriv
= dPriv
;
474 drawable
->row
= malloc(MAX_WIDTH
* 4);
475 if (drawable
->row
== NULL
)
478 fb
= &drawable
->Base
;
480 /* basic framebuffer setup */
481 _mesa_initialize_window_framebuffer(fb
, visual
);
483 /* add front renderbuffer */
484 frontrb
= swrast_new_renderbuffer(visual
, dPriv
, GL_TRUE
);
485 _mesa_add_renderbuffer(fb
, BUFFER_FRONT_LEFT
, &frontrb
->Base
);
487 /* add back renderbuffer */
488 if (visual
->doubleBufferMode
) {
489 backrb
= swrast_new_renderbuffer(visual
, dPriv
, GL_FALSE
);
490 _mesa_add_renderbuffer(fb
, BUFFER_BACK_LEFT
, &backrb
->Base
);
493 /* add software renderbuffers */
494 _swrast_add_soft_renderbuffers(fb
,
495 GL_FALSE
, /* color */
496 visual
->haveDepthBuffer
,
497 visual
->haveStencilBuffer
,
498 visual
->haveAccumBuffer
,
499 GL_FALSE
, /* alpha */
500 GL_FALSE
/* aux bufs */);
515 dri_destroy_buffer(__DRIdrawable
* dPriv
)
520 struct dri_drawable
*drawable
= dri_drawable(dPriv
);
521 struct gl_framebuffer
*fb
;
525 fb
= &drawable
->Base
;
527 fb
->DeletePending
= GL_TRUE
;
528 _mesa_reference_framebuffer(&fb
, NULL
);
533 dri_swap_buffers(__DRIdrawable
* dPriv
)
535 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
537 GET_CURRENT_CONTEXT(ctx
);
539 struct dri_drawable
*drawable
= dri_drawable(dPriv
);
540 struct gl_framebuffer
*fb
;
541 struct swrast_renderbuffer
*frontrb
, *backrb
;
545 fb
= &drawable
->Base
;
548 swrast_renderbuffer(fb
->Attachment
[BUFFER_FRONT_LEFT
].Renderbuffer
);
550 swrast_renderbuffer(fb
->Attachment
[BUFFER_BACK_LEFT
].Renderbuffer
);
552 /* check for signle-buffered */
556 /* check if swapping currently bound buffer */
557 if (ctx
&& ctx
->DrawBuffer
== fb
) {
558 /* flush pending rendering */
559 _mesa_notifySwapBuffers(ctx
);
562 sPriv
->swrast_loader
->putImage(dPriv
, __DRI_SWRAST_IMAGE_OP_SWAP
,
565 frontrb
->Base
.Height
,
567 dPriv
->loaderPrivate
);
572 * General device driver functions.
576 get_window_size( struct gl_framebuffer
*fb
, GLsizei
*w
, GLsizei
*h
)
578 __DRIdrawable
*dPriv
= swrast_drawable(fb
)->dPriv
;
579 __DRIscreen
*sPriv
= dPriv
->driScreenPriv
;
582 sPriv
->swrast_loader
->getDrawableInfo(dPriv
,
584 dPriv
->loaderPrivate
);
588 swrast_check_and_update_window_size( struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
590 GLsizei width
, height
;
592 get_window_size(fb
, &width
, &height
);
593 if (fb
->Width
!= width
|| fb
->Height
!= height
) {
594 _mesa_resize_framebuffer(ctx
, fb
, width
, height
);
598 static const GLubyte
*
599 get_string(struct gl_context
*ctx
, GLenum pname
)
604 return (const GLubyte
*) "Mesa Project";
606 return (const GLubyte
*) "Software Rasterizer";
613 update_state( struct gl_context
*ctx
, GLuint new_state
)
615 /* not much to do here - pass it on */
616 _swrast_InvalidateState( ctx
, new_state
);
617 _swsetup_InvalidateState( ctx
, new_state
);
618 _vbo_InvalidateState( ctx
, new_state
);
619 _tnl_InvalidateState( ctx
, new_state
);
623 viewport(struct gl_context
*ctx
, GLint x
, GLint y
, GLsizei w
, GLsizei h
)
625 struct gl_framebuffer
*draw
= ctx
->WinSysDrawBuffer
;
626 struct gl_framebuffer
*read
= ctx
->WinSysReadBuffer
;
632 swrast_check_and_update_window_size(ctx
, draw
);
633 swrast_check_and_update_window_size(ctx
, read
);
636 static gl_format
swrastChooseTextureFormat(struct gl_context
* ctx
,
637 GLint internalFormat
,
641 if (internalFormat
== GL_RGB
)
642 return MESA_FORMAT_XRGB8888
;
643 return _mesa_choose_tex_format(ctx
, internalFormat
, format
, type
);
647 swrast_init_driver_functions(struct dd_function_table
*driver
)
649 driver
->GetString
= get_string
;
650 driver
->UpdateState
= update_state
;
651 driver
->GetBufferSize
= NULL
;
652 driver
->Viewport
= viewport
;
653 driver
->ChooseTextureFormat
= swrastChooseTextureFormat
;
654 driver
->MapRenderbuffer
= swrast_map_renderbuffer
;
655 driver
->UnmapRenderbuffer
= swrast_unmap_renderbuffer
;
658 static const char *es2_extensions
[] = {
659 /* Used by mesa internally (cf all_mesa_extensions in ../common/utils.c) */
660 "GL_ARB_transpose_matrix",
662 "GL_EXT_blend_func_separate",
663 "GL_EXT_compiled_vertex_array",
664 "GL_EXT_framebuffer_blit",
665 "GL_IBM_multimode_draw_arrays",
666 "GL_MESA_window_pos",
667 "GL_NV_vertex_program",
669 /* Required by GLES2 */
670 "GL_ARB_fragment_program",
671 "GL_ARB_fragment_shader",
672 "GL_ARB_shader_objects",
673 "GL_ARB_texture_cube_map",
674 "GL_ARB_texture_non_power_of_two",
675 "GL_ARB_vertex_shader",
676 "GL_EXT_blend_color",
677 "GL_EXT_blend_equation_separate",
678 "GL_EXT_blend_minmax",
681 "GL_ARB_framebuffer_object",
682 "GL_EXT_texture_filter_anisotropic",
683 "GL_ARB_depth_texture",
684 "GL_EXT_packed_depth_stencil",
685 "GL_EXT_framebuffer_object",
690 InitExtensionsES2(struct gl_context
*ctx
)
694 for (i
= 0; es2_extensions
[i
]; i
++)
695 _mesa_enable_extension(ctx
, es2_extensions
[i
]);
699 * Context-related functions.
703 dri_create_context(gl_api api
,
704 const struct gl_config
* visual
,
705 __DRIcontext
* cPriv
,
706 unsigned major_version
,
707 unsigned minor_version
,
710 void *sharedContextPrivate
)
712 struct dri_context
*ctx
= NULL
;
713 struct dri_context
*share
= (struct dri_context
*)sharedContextPrivate
;
714 struct gl_context
*mesaCtx
= NULL
;
715 struct gl_context
*sharedCtx
= NULL
;
716 struct dd_function_table functions
;
720 /* Flag filtering is handled in dri2CreateContextAttribs.
724 if (api
== API_OPENGL
725 && (major_version
> 2
726 || (major_version
== 2 && minor_version
> 1))) {
727 *error
= __DRI_CTX_ERROR_BAD_VERSION
;
731 ctx
= CALLOC_STRUCT(dri_context
);
733 *error
= __DRI_CTX_ERROR_NO_MEMORY
;
737 cPriv
->driverPrivate
= ctx
;
740 /* build table of device driver functions */
741 _mesa_init_driver_functions(&functions
);
742 swrast_init_driver_functions(&functions
);
745 sharedCtx
= &share
->Base
;
748 mesaCtx
= &ctx
->Base
;
750 /* basic context setup */
751 if (!_mesa_initialize_context(mesaCtx
, api
, visual
, sharedCtx
, &functions
, (void *) cPriv
)) {
752 *error
= __DRI_CTX_ERROR_NO_MEMORY
;
756 /* do bounds checking to prevent segfaults and server crashes! */
757 mesaCtx
->Const
.CheckArrayBounds
= GL_TRUE
;
759 /* create module contexts */
760 _swrast_CreateContext( mesaCtx
);
761 _vbo_CreateContext( mesaCtx
);
762 _tnl_CreateContext( mesaCtx
);
763 _swsetup_CreateContext( mesaCtx
);
764 _swsetup_Wakeup( mesaCtx
);
766 /* use default TCL pipeline */
768 TNLcontext
*tnl
= TNL_CONTEXT(mesaCtx
);
769 tnl
->Driver
.RunPipeline
= _tnl_run_pipeline
;
772 _mesa_meta_init(mesaCtx
);
773 _mesa_enable_sw_extensions(mesaCtx
);
777 _mesa_enable_1_3_extensions(mesaCtx
);
778 _mesa_enable_1_4_extensions(mesaCtx
);
779 _mesa_enable_1_5_extensions(mesaCtx
);
780 _mesa_enable_2_0_extensions(mesaCtx
);
781 _mesa_enable_2_1_extensions(mesaCtx
);
784 _mesa_enable_1_3_extensions(mesaCtx
);
785 _mesa_enable_1_4_extensions(mesaCtx
);
786 _mesa_enable_1_5_extensions(mesaCtx
);
790 InitExtensionsES2( mesaCtx
);
794 *error
= __DRI_CTX_ERROR_SUCCESS
;
805 dri_destroy_context(__DRIcontext
* cPriv
)
810 struct dri_context
*ctx
= dri_context(cPriv
);
811 struct gl_context
*mesaCtx
;
813 mesaCtx
= &ctx
->Base
;
815 _mesa_meta_free(mesaCtx
);
816 _swsetup_DestroyContext( mesaCtx
);
817 _swrast_DestroyContext( mesaCtx
);
818 _tnl_DestroyContext( mesaCtx
);
819 _vbo_DestroyContext( mesaCtx
);
820 _mesa_destroy_context( mesaCtx
);
825 dri_make_current(__DRIcontext
* cPriv
,
826 __DRIdrawable
* driDrawPriv
,
827 __DRIdrawable
* driReadPriv
)
829 struct gl_context
*mesaCtx
;
830 struct gl_framebuffer
*mesaDraw
;
831 struct gl_framebuffer
*mesaRead
;
835 struct dri_context
*ctx
= dri_context(cPriv
);
836 struct dri_drawable
*draw
;
837 struct dri_drawable
*read
;
839 if (!driDrawPriv
|| !driReadPriv
)
842 draw
= dri_drawable(driDrawPriv
);
843 read
= dri_drawable(driReadPriv
);
844 mesaCtx
= &ctx
->Base
;
845 mesaDraw
= &draw
->Base
;
846 mesaRead
= &read
->Base
;
848 /* check for same context and buffer */
849 if (mesaCtx
== _mesa_get_current_context()
850 && mesaCtx
->DrawBuffer
== mesaDraw
851 && mesaCtx
->ReadBuffer
== mesaRead
) {
855 _glapi_check_multithread();
857 swrast_check_and_update_window_size(mesaCtx
, mesaDraw
);
858 if (mesaRead
!= mesaDraw
)
859 swrast_check_and_update_window_size(mesaCtx
, mesaRead
);
861 _mesa_make_current( mesaCtx
,
867 _mesa_make_current( NULL
, NULL
, NULL
);
874 dri_unbind_context(__DRIcontext
* cPriv
)
879 /* Unset current context and dispath table */
880 _mesa_make_current(NULL
, NULL
, NULL
);
886 const struct __DriverAPIRec driDriverAPI
= {
887 .InitScreen
= dri_init_screen
,
888 .DestroyScreen
= dri_destroy_screen
,
889 .CreateContext
= dri_create_context
,
890 .DestroyContext
= dri_destroy_context
,
891 .CreateBuffer
= dri_create_buffer
,
892 .DestroyBuffer
= dri_destroy_buffer
,
893 .SwapBuffers
= dri_swap_buffers
,
894 .MakeCurrent
= dri_make_current
,
895 .UnbindContext
= dri_unbind_context
,
898 /* This is the table of extensions that the loader will dlsym() for. */
899 PUBLIC
const __DRIextension
*__driDriverExtensions
[] = {
900 &driCoreExtension
.base
,
901 &driSWRastExtension
.base
,