1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Framebuffer/renderbuffer functions.
36 #include "main/imports.h"
37 #include "main/context.h"
38 #include "main/fbobject.h"
39 #include "main/framebuffer.h"
40 #include "main/macros.h"
41 #include "main/renderbuffer.h"
43 #include "pipe/p_context.h"
44 #include "pipe/p_defines.h"
45 #include "pipe/p_screen.h"
46 #include "st_context.h"
47 #include "st_cb_fbo.h"
48 #include "st_cb_flush.h"
49 #include "st_cb_texture.h"
50 #include "st_format.h"
51 #include "st_texture.h"
52 #include "st_manager.h"
54 #include "util/u_format.h"
55 #include "util/u_inlines.h"
56 #include "util/u_surface.h"
60 st_renderbuffer_alloc_sw_storage(struct gl_context
* ctx
,
61 struct gl_renderbuffer
*rb
,
62 GLenum internalFormat
,
63 GLuint width
, GLuint height
)
65 struct st_context
*st
= st_context(ctx
);
66 struct st_renderbuffer
*strb
= st_renderbuffer(rb
);
67 enum pipe_format format
;
73 if (internalFormat
== GL_RGBA16_SNORM
) {
74 /* Special case for software accum buffers. Otherwise, if the
75 * call to st_choose_renderbuffer_format() fails (because the
76 * driver doesn't support signed 16-bit/channel colors) we'd
77 * just return without allocating the software accum buffer.
79 format
= PIPE_FORMAT_R16G16B16A16_SNORM
;
82 format
= st_choose_renderbuffer_format(st
, internalFormat
, 0);
84 /* Not setting gl_renderbuffer::Format here will cause
85 * FRAMEBUFFER_UNSUPPORTED and ValidateFramebuffer will not be called.
87 if (format
== PIPE_FORMAT_NONE
) {
92 strb
->Base
.Format
= st_pipe_format_to_mesa_format(format
);
94 size
= _mesa_format_image_size(strb
->Base
.Format
, width
, height
, 1);
95 strb
->data
= malloc(size
);
96 return strb
->data
!= NULL
;
101 * gl_renderbuffer::AllocStorage()
102 * This is called to allocate the original drawing surface, and
103 * during window resize.
106 st_renderbuffer_alloc_storage(struct gl_context
* ctx
,
107 struct gl_renderbuffer
*rb
,
108 GLenum internalFormat
,
109 GLuint width
, GLuint height
)
111 struct st_context
*st
= st_context(ctx
);
112 struct pipe_context
*pipe
= st
->pipe
;
113 struct pipe_screen
*screen
= st
->pipe
->screen
;
114 struct st_renderbuffer
*strb
= st_renderbuffer(rb
);
115 enum pipe_format format
= PIPE_FORMAT_NONE
;
116 struct pipe_surface surf_tmpl
;
117 struct pipe_resource templ
;
119 /* init renderbuffer fields */
120 strb
->Base
.Width
= width
;
121 strb
->Base
.Height
= height
;
122 strb
->Base
._BaseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
123 strb
->defined
= GL_FALSE
; /* undefined contents now */
125 if (strb
->software
) {
126 return st_renderbuffer_alloc_sw_storage(ctx
, rb
, internalFormat
,
130 /* Free the old surface and texture
132 pipe_surface_reference( &strb
->surface
, NULL
);
133 pipe_resource_reference( &strb
->texture
, NULL
);
135 /* Handle multisample renderbuffers first.
137 * From ARB_framebuffer_object:
138 * If <samples> is zero, then RENDERBUFFER_SAMPLES is set to zero.
139 * Otherwise <samples> represents a request for a desired minimum
140 * number of samples. Since different implementations may support
141 * different sample counts for multisampled rendering, the actual
142 * number of samples allocated for the renderbuffer image is
143 * implementation dependent. However, the resulting value for
144 * RENDERBUFFER_SAMPLES is guaranteed to be greater than or equal
145 * to <samples> and no more than the next larger sample count supported
146 * by the implementation.
148 * So let's find the supported number of samples closest to NumSamples.
149 * (NumSamples == 1) is treated the same as (NumSamples == 0).
151 if (rb
->NumSamples
> 1) {
154 for (i
= rb
->NumSamples
; i
<= ctx
->Const
.MaxSamples
; i
++) {
155 format
= st_choose_renderbuffer_format(st
, internalFormat
, i
);
157 if (format
!= PIPE_FORMAT_NONE
) {
163 format
= st_choose_renderbuffer_format(st
, internalFormat
, 0);
166 /* Not setting gl_renderbuffer::Format here will cause
167 * FRAMEBUFFER_UNSUPPORTED and ValidateFramebuffer will not be called.
169 if (format
== PIPE_FORMAT_NONE
) {
173 strb
->Base
.Format
= st_pipe_format_to_mesa_format(format
);
175 if (width
== 0 || height
== 0) {
176 /* if size is zero, nothing to allocate */
180 /* Setup new texture template.
182 memset(&templ
, 0, sizeof(templ
));
183 templ
.target
= st
->internal_target
;
184 templ
.format
= format
;
185 templ
.width0
= width
;
186 templ
.height0
= height
;
188 templ
.array_size
= 1;
189 templ
.nr_samples
= rb
->NumSamples
;
190 if (util_format_is_depth_or_stencil(format
)) {
191 templ
.bind
= PIPE_BIND_DEPTH_STENCIL
;
193 else if (strb
->Base
.Name
!= 0) {
194 /* this is a user-created renderbuffer */
195 templ
.bind
= PIPE_BIND_RENDER_TARGET
;
198 /* this is a window-system buffer */
199 templ
.bind
= (PIPE_BIND_DISPLAY_TARGET
|
200 PIPE_BIND_RENDER_TARGET
);
203 strb
->texture
= screen
->resource_create(screen
, &templ
);
208 u_surface_default_template(&surf_tmpl
, strb
->texture
);
209 strb
->surface
= pipe
->create_surface(pipe
,
213 assert(strb
->surface
->texture
);
214 assert(strb
->surface
->format
);
215 assert(strb
->surface
->width
== width
);
216 assert(strb
->surface
->height
== height
);
219 return strb
->surface
!= NULL
;
224 * gl_renderbuffer::Delete()
227 st_renderbuffer_delete(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
229 struct st_renderbuffer
*strb
= st_renderbuffer(rb
);
231 struct st_context
*st
= st_context(ctx
);
232 pipe_surface_release(st
->pipe
, &strb
->surface
);
234 pipe_resource_reference(&strb
->texture
, NULL
);
236 _mesa_delete_renderbuffer(ctx
, rb
);
241 * Called via ctx->Driver.NewFramebuffer()
243 static struct gl_framebuffer
*
244 st_new_framebuffer(struct gl_context
*ctx
, GLuint name
)
246 /* XXX not sure we need to subclass gl_framebuffer for pipe */
247 return _mesa_new_framebuffer(ctx
, name
);
252 * Called via ctx->Driver.NewRenderbuffer()
254 static struct gl_renderbuffer
*
255 st_new_renderbuffer(struct gl_context
*ctx
, GLuint name
)
257 struct st_renderbuffer
*strb
= ST_CALLOC_STRUCT(st_renderbuffer
);
260 _mesa_init_renderbuffer(&strb
->Base
, name
);
261 strb
->Base
.Delete
= st_renderbuffer_delete
;
262 strb
->Base
.AllocStorage
= st_renderbuffer_alloc_storage
;
270 * Allocate a renderbuffer for a an on-screen window (not a user-created
271 * renderbuffer). The window system code determines the format.
273 struct gl_renderbuffer
*
274 st_new_renderbuffer_fb(enum pipe_format format
, int samples
, boolean sw
)
276 struct st_renderbuffer
*strb
;
278 strb
= ST_CALLOC_STRUCT(st_renderbuffer
);
280 _mesa_error(NULL
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
284 _mesa_init_renderbuffer(&strb
->Base
, 0);
285 strb
->Base
.ClassID
= 0x4242; /* just a unique value */
286 strb
->Base
.NumSamples
= samples
;
287 strb
->Base
.Format
= st_pipe_format_to_mesa_format(format
);
288 strb
->Base
._BaseFormat
= _mesa_get_format_base_format(strb
->Base
.Format
);
292 case PIPE_FORMAT_R8G8B8A8_UNORM
:
293 case PIPE_FORMAT_B8G8R8A8_UNORM
:
294 case PIPE_FORMAT_A8R8G8B8_UNORM
:
295 strb
->Base
.InternalFormat
= GL_RGBA8
;
297 case PIPE_FORMAT_R8G8B8X8_UNORM
:
298 case PIPE_FORMAT_B8G8R8X8_UNORM
:
299 case PIPE_FORMAT_X8R8G8B8_UNORM
:
300 strb
->Base
.InternalFormat
= GL_RGB8
;
302 case PIPE_FORMAT_B5G5R5A1_UNORM
:
303 strb
->Base
.InternalFormat
= GL_RGB5_A1
;
305 case PIPE_FORMAT_B4G4R4A4_UNORM
:
306 strb
->Base
.InternalFormat
= GL_RGBA4
;
308 case PIPE_FORMAT_B5G6R5_UNORM
:
309 strb
->Base
.InternalFormat
= GL_RGB565
;
311 case PIPE_FORMAT_Z16_UNORM
:
312 strb
->Base
.InternalFormat
= GL_DEPTH_COMPONENT16
;
314 case PIPE_FORMAT_Z32_UNORM
:
315 strb
->Base
.InternalFormat
= GL_DEPTH_COMPONENT32
;
317 case PIPE_FORMAT_Z24_UNORM_S8_UINT
:
318 case PIPE_FORMAT_S8_UINT_Z24_UNORM
:
319 strb
->Base
.InternalFormat
= GL_DEPTH24_STENCIL8_EXT
;
321 case PIPE_FORMAT_Z24X8_UNORM
:
322 case PIPE_FORMAT_X8Z24_UNORM
:
323 strb
->Base
.InternalFormat
= GL_DEPTH_COMPONENT24
;
325 case PIPE_FORMAT_S8_UINT
:
326 strb
->Base
.InternalFormat
= GL_STENCIL_INDEX8_EXT
;
328 case PIPE_FORMAT_R16G16B16A16_SNORM
:
330 strb
->Base
.InternalFormat
= GL_RGBA16_SNORM
;
332 case PIPE_FORMAT_R16G16B16A16_UNORM
:
333 strb
->Base
.InternalFormat
= GL_RGBA16
;
335 case PIPE_FORMAT_R8_UNORM
:
336 strb
->Base
.InternalFormat
= GL_R8
;
338 case PIPE_FORMAT_R8G8_UNORM
:
339 strb
->Base
.InternalFormat
= GL_RG8
;
341 case PIPE_FORMAT_R16_UNORM
:
342 strb
->Base
.InternalFormat
= GL_R16
;
344 case PIPE_FORMAT_R16G16_UNORM
:
345 strb
->Base
.InternalFormat
= GL_RG16
;
347 case PIPE_FORMAT_R32G32B32A32_FLOAT
:
348 strb
->Base
.InternalFormat
= GL_RGBA32F
;
350 case PIPE_FORMAT_R16G16B16A16_FLOAT
:
351 strb
->Base
.InternalFormat
= GL_RGBA16F
;
355 "Unexpected format %s in st_new_renderbuffer_fb",
356 util_format_name(format
));
361 /* st-specific methods */
362 strb
->Base
.Delete
= st_renderbuffer_delete
;
363 strb
->Base
.AllocStorage
= st_renderbuffer_alloc_storage
;
365 /* surface is allocated in st_renderbuffer_alloc_storage() */
366 strb
->surface
= NULL
;
373 * Called via ctx->Driver.BindFramebufferEXT().
376 st_bind_framebuffer(struct gl_context
*ctx
, GLenum target
,
377 struct gl_framebuffer
*fb
, struct gl_framebuffer
*fbread
)
384 * Called by ctx->Driver.RenderTexture
387 st_render_texture(struct gl_context
*ctx
,
388 struct gl_framebuffer
*fb
,
389 struct gl_renderbuffer_attachment
*att
)
391 struct st_context
*st
= st_context(ctx
);
392 struct pipe_context
*pipe
= st
->pipe
;
393 struct st_renderbuffer
*strb
;
394 struct gl_renderbuffer
*rb
;
395 struct pipe_resource
*pt
;
396 struct st_texture_object
*stObj
;
397 const struct gl_texture_image
*texImage
;
398 struct pipe_surface surf_tmpl
;
400 if (!st_finalize_texture(ctx
, pipe
, att
->Texture
))
403 pt
= st_get_texobj_resource(att
->Texture
);
406 /* get pointer to texture image we're rendeing to */
407 texImage
= _mesa_get_attachment_teximage(att
);
409 /* create new renderbuffer which wraps the texture image.
410 * Use the texture's name as the renderbuffer's name so that we have
411 * something that's non-zero (to determine vertical orientation) and
412 * possibly helpful for debugging.
414 rb
= st_new_renderbuffer(ctx
, att
->Texture
->Name
);
416 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glFramebufferTexture()");
420 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
421 assert(rb
->RefCount
== 1);
422 rb
->AllocStorage
= NULL
; /* should not get called */
423 strb
= st_renderbuffer(rb
);
425 assert(strb
->Base
.RefCount
> 0);
427 /* get the texture for the texture object */
428 stObj
= st_texture_object(att
->Texture
);
430 /* point renderbuffer at texobject */
432 strb
->rtt_level
= att
->TextureLevel
;
433 strb
->rtt_face
= att
->CubeMapFace
;
434 strb
->rtt_slice
= att
->Zoffset
;
435 rb
->NumSamples
= texImage
->NumSamples
;
436 rb
->Width
= texImage
->Width2
;
437 rb
->Height
= texImage
->Height2
;
438 rb
->_BaseFormat
= texImage
->_BaseFormat
;
439 rb
->InternalFormat
= texImage
->InternalFormat
;
441 pipe_resource_reference( &strb
->texture
, pt
);
443 pipe_surface_release(pipe
, &strb
->surface
);
445 assert(strb
->rtt_level
<= strb
->texture
->last_level
);
447 /* new surface for rendering into the texture */
448 memset(&surf_tmpl
, 0, sizeof(surf_tmpl
));
449 surf_tmpl
.format
= ctx
->Color
.sRGBEnabled
450 ? strb
->texture
->format
: util_format_linear(strb
->texture
->format
);
451 surf_tmpl
.u
.tex
.level
= strb
->rtt_level
;
452 surf_tmpl
.u
.tex
.first_layer
= strb
->rtt_face
+ strb
->rtt_slice
;
453 surf_tmpl
.u
.tex
.last_layer
= strb
->rtt_face
+ strb
->rtt_slice
;
454 strb
->surface
= pipe
->create_surface(pipe
,
458 strb
->Base
.Format
= st_pipe_format_to_mesa_format(pt
->format
);
460 /* Invalidate buffer state so that the pipe's framebuffer state
462 * That's where the new renderbuffer (which we just created) gets
463 * passed to the pipe as a (color/depth) render target.
465 st_invalidate_state(ctx
, _NEW_BUFFERS
);
468 /* Need to trigger a call to update_framebuffer() since we just
469 * attached a new renderbuffer.
471 ctx
->NewState
|= _NEW_BUFFERS
;
476 * Called via ctx->Driver.FinishRenderTexture.
479 st_finish_render_texture(struct gl_context
*ctx
,
480 struct gl_renderbuffer_attachment
*att
)
482 struct st_renderbuffer
*strb
= st_renderbuffer(att
->Renderbuffer
);
489 /* restore previous framebuffer state */
490 st_invalidate_state(ctx
, _NEW_BUFFERS
);
496 st_fbo_invalid(const char *reason
)
498 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
499 _mesa_debug(NULL
, "Invalid FBO: %s\n", reason
);
505 * Validate a renderbuffer attachment for a particular set of bindings.
508 st_validate_attachment(struct gl_context
*ctx
,
509 struct pipe_screen
*screen
,
510 const struct gl_renderbuffer_attachment
*att
,
513 const struct st_texture_object
*stObj
= st_texture_object(att
->Texture
);
514 enum pipe_format format
;
518 /* Only validate texture attachments for now, since
519 * st_renderbuffer_alloc_storage makes sure that
520 * the format is supported.
522 if (att
->Type
!= GL_TEXTURE
)
528 format
= stObj
->pt
->format
;
529 texFormat
= _mesa_get_attachment_teximage_const(att
)->TexFormat
;
531 /* If the encoding is sRGB and sRGB rendering cannot be enabled,
532 * check for linear format support instead.
533 * Later when we create a surface, we change the format to a linear one. */
534 if (!ctx
->Extensions
.EXT_framebuffer_sRGB
&&
535 _mesa_get_format_color_encoding(texFormat
) == GL_SRGB
) {
536 const gl_format linearFormat
= _mesa_get_srgb_format_linear(texFormat
);
537 format
= st_mesa_format_to_pipe_format(linearFormat
);
540 valid
= screen
->is_format_supported(screen
, format
,
542 stObj
->pt
->nr_samples
, bindings
);
544 st_fbo_invalid("Invalid format");
552 * Check that the framebuffer configuration is valid in terms of what
553 * the driver can support.
555 * For Gallium we only supports combined Z+stencil, not separate buffers.
558 st_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
560 struct st_context
*st
= st_context(ctx
);
561 struct pipe_screen
*screen
= st
->pipe
->screen
;
562 const struct gl_renderbuffer_attachment
*depth
=
563 &fb
->Attachment
[BUFFER_DEPTH
];
564 const struct gl_renderbuffer_attachment
*stencil
=
565 &fb
->Attachment
[BUFFER_STENCIL
];
567 enum pipe_format first_format
= PIPE_FORMAT_NONE
;
568 boolean mixed_formats
=
569 screen
->get_param(screen
, PIPE_CAP_MIXED_COLORBUFFER_FORMATS
) != 0;
571 if (depth
->Type
&& stencil
->Type
&& depth
->Type
!= stencil
->Type
) {
572 st_fbo_invalid("Different Depth/Stencil buffer formats");
573 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
576 if (depth
->Type
== GL_RENDERBUFFER_EXT
&&
577 stencil
->Type
== GL_RENDERBUFFER_EXT
&&
578 depth
->Renderbuffer
!= stencil
->Renderbuffer
) {
579 st_fbo_invalid("Separate Depth/Stencil buffers");
580 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
583 if (depth
->Type
== GL_TEXTURE
&&
584 stencil
->Type
== GL_TEXTURE
&&
585 depth
->Texture
!= stencil
->Texture
) {
586 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
587 st_fbo_invalid("Different Depth/Stencil textures");
591 if (!st_validate_attachment(ctx
,
594 PIPE_BIND_DEPTH_STENCIL
)) {
595 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
598 if (!st_validate_attachment(ctx
,
601 PIPE_BIND_DEPTH_STENCIL
)) {
602 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
605 for (i
= 0; i
< ctx
->Const
.MaxColorAttachments
; i
++) {
606 struct gl_renderbuffer_attachment
*att
=
607 &fb
->Attachment
[BUFFER_COLOR0
+ i
];
608 enum pipe_format format
;
610 if (!st_validate_attachment(ctx
,
613 PIPE_BIND_RENDER_TARGET
)) {
614 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
618 if (!mixed_formats
) {
619 /* Disallow mixed formats. */
620 if (att
->Type
!= GL_NONE
) {
621 format
= st_renderbuffer(att
->Renderbuffer
)->surface
->format
;
626 if (first_format
== PIPE_FORMAT_NONE
) {
627 first_format
= format
;
628 } else if (format
!= first_format
) {
629 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
630 st_fbo_invalid("Mixed color formats");
639 * Called via glDrawBuffer.
642 st_DrawBuffers(struct gl_context
*ctx
, GLsizei count
, const GLenum
*buffers
)
644 struct st_context
*st
= st_context(ctx
);
645 struct gl_framebuffer
*fb
= ctx
->DrawBuffer
;
651 /* add the renderbuffers on demand */
652 for (i
= 0; i
< fb
->_NumColorDrawBuffers
; i
++) {
653 gl_buffer_index idx
= fb
->_ColorDrawBufferIndexes
[i
];
654 st_manager_add_color_renderbuffer(st
, fb
, idx
);
660 * Called via glReadBuffer.
663 st_ReadBuffer(struct gl_context
*ctx
, GLenum buffer
)
665 struct st_context
*st
= st_context(ctx
);
666 struct gl_framebuffer
*fb
= ctx
->ReadBuffer
;
670 /* add the renderbuffer on demand */
671 st_manager_add_color_renderbuffer(st
, fb
, fb
->_ColorReadBufferIndex
);
677 * Called via ctx->Driver.MapRenderbuffer.
680 st_MapRenderbuffer(struct gl_context
*ctx
,
681 struct gl_renderbuffer
*rb
,
682 GLuint x
, GLuint y
, GLuint w
, GLuint h
,
684 GLubyte
**mapOut
, GLint
*rowStrideOut
)
686 struct st_context
*st
= st_context(ctx
);
687 struct st_renderbuffer
*strb
= st_renderbuffer(rb
);
688 struct pipe_context
*pipe
= st
->pipe
;
689 const GLboolean invert
= rb
->Name
== 0;
694 if (strb
->software
) {
695 /* software-allocated renderbuffer (probably an accum buffer) */
697 GLint bpp
= _mesa_get_format_bytes(strb
->Base
.Format
);
698 GLint stride
= _mesa_format_row_stride(strb
->Base
.Format
,
700 *mapOut
= (GLubyte
*) strb
->data
+ y
* stride
+ x
* bpp
;
701 *rowStrideOut
= stride
;
711 if (mode
& GL_MAP_READ_BIT
)
712 usage
|= PIPE_TRANSFER_READ
;
713 if (mode
& GL_MAP_WRITE_BIT
)
714 usage
|= PIPE_TRANSFER_WRITE
;
715 if (mode
& GL_MAP_INVALIDATE_RANGE_BIT
)
716 usage
|= PIPE_TRANSFER_DISCARD_RANGE
;
718 /* Note: y=0=bottom of buffer while y2=0=top of buffer.
719 * 'invert' will be true for window-system buffers and false for
720 * user-allocated renderbuffers and textures.
723 y2
= strb
->Base
.Height
- y
- h
;
727 map
= pipe_transfer_map(pipe
,
730 strb
->rtt_face
+ strb
->rtt_slice
,
731 usage
, x
, y2
, w
, h
, &strb
->transfer
);
734 *rowStrideOut
= -(int) strb
->transfer
->stride
;
735 map
+= (h
- 1) * strb
->transfer
->stride
;
738 *rowStrideOut
= strb
->transfer
->stride
;
750 * Called via ctx->Driver.UnmapRenderbuffer.
753 st_UnmapRenderbuffer(struct gl_context
*ctx
,
754 struct gl_renderbuffer
*rb
)
756 struct st_context
*st
= st_context(ctx
);
757 struct st_renderbuffer
*strb
= st_renderbuffer(rb
);
758 struct pipe_context
*pipe
= st
->pipe
;
760 if (strb
->software
) {
761 /* software-allocated renderbuffer (probably an accum buffer) */
765 pipe_transfer_unmap(pipe
, strb
->transfer
);
766 strb
->transfer
= NULL
;
771 void st_init_fbo_functions(struct dd_function_table
*functions
)
773 functions
->NewFramebuffer
= st_new_framebuffer
;
774 functions
->NewRenderbuffer
= st_new_renderbuffer
;
775 functions
->BindFramebuffer
= st_bind_framebuffer
;
776 functions
->FramebufferRenderbuffer
= _mesa_framebuffer_renderbuffer
;
777 functions
->RenderTexture
= st_render_texture
;
778 functions
->FinishRenderTexture
= st_finish_render_texture
;
779 functions
->ValidateFramebuffer
= st_validate_framebuffer
;
781 functions
->DrawBuffers
= st_DrawBuffers
;
782 functions
->ReadBuffer
= st_ReadBuffer
;
784 functions
->MapRenderbuffer
= st_MapRenderbuffer
;
785 functions
->UnmapRenderbuffer
= st_UnmapRenderbuffer
;