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/mfeatures.h"
42 #include "main/renderbuffer.h"
44 #include "pipe/p_context.h"
45 #include "pipe/p_defines.h"
46 #include "pipe/p_screen.h"
47 #include "st_context.h"
48 #include "st_cb_fbo.h"
49 #include "st_cb_flush.h"
50 #include "st_cb_texture.h"
51 #include "st_format.h"
52 #include "st_texture.h"
53 #include "st_manager.h"
55 #include "util/u_format.h"
56 #include "util/u_inlines.h"
57 #include "util/u_surface.h"
61 * gl_renderbuffer::AllocStorage()
62 * This is called to allocate the original drawing surface, and
63 * during window resize.
66 st_renderbuffer_alloc_storage(struct gl_context
* ctx
,
67 struct gl_renderbuffer
*rb
,
68 GLenum internalFormat
,
69 GLuint width
, GLuint height
)
71 struct st_context
*st
= st_context(ctx
);
72 struct pipe_context
*pipe
= st
->pipe
;
73 struct pipe_screen
*screen
= st
->pipe
->screen
;
74 struct st_renderbuffer
*strb
= st_renderbuffer(rb
);
75 enum pipe_format format
;
76 struct pipe_surface surf_tmpl
;
78 format
= st_choose_renderbuffer_format(screen
, internalFormat
,
81 if (format
== PIPE_FORMAT_NONE
) {
85 /* init renderbuffer fields */
86 strb
->Base
.Width
= width
;
87 strb
->Base
.Height
= height
;
88 strb
->Base
.Format
= st_pipe_format_to_mesa_format(format
);
89 strb
->Base
._BaseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
90 strb
->Base
.DataType
= st_format_datatype(format
);
91 strb
->format
= format
;
93 strb
->defined
= GL_FALSE
; /* undefined contents now */
100 assert(strb
->format
!= PIPE_FORMAT_NONE
);
102 strb
->stride
= util_format_get_stride(strb
->format
, width
);
103 size
= util_format_get_2d_size(strb
->format
, strb
->stride
, height
);
105 strb
->data
= malloc(size
);
107 return strb
->data
!= NULL
;
110 struct pipe_resource
template;
112 /* Free the old surface and texture
114 pipe_surface_reference( &strb
->surface
, NULL
);
115 pipe_resource_reference( &strb
->texture
, NULL
);
117 /* Setup new texture template.
119 memset(&template, 0, sizeof(template));
120 template.target
= st
->internal_target
;
121 template.format
= format
;
122 template.width0
= width
;
123 template.height0
= height
;
125 template.array_size
= 1;
126 template.last_level
= 0;
127 template.nr_samples
= rb
->NumSamples
;
128 if (util_format_is_depth_or_stencil(format
)) {
129 template.bind
= PIPE_BIND_DEPTH_STENCIL
;
132 template.bind
= (PIPE_BIND_DISPLAY_TARGET
|
133 PIPE_BIND_RENDER_TARGET
);
136 strb
->texture
= screen
->resource_create(screen
, &template);
141 memset(&surf_tmpl
, 0, sizeof(surf_tmpl
));
142 u_surface_default_template(&surf_tmpl
, strb
->texture
, template.bind
);
143 strb
->surface
= pipe
->create_surface(pipe
,
147 assert(strb
->surface
->texture
);
148 assert(strb
->surface
->format
);
149 assert(strb
->surface
->width
== width
);
150 assert(strb
->surface
->height
== height
);
153 return strb
->surface
!= NULL
;
159 * gl_renderbuffer::Delete()
162 st_renderbuffer_delete(struct gl_renderbuffer
*rb
)
164 struct st_renderbuffer
*strb
= st_renderbuffer(rb
);
166 pipe_surface_reference(&strb
->surface
, NULL
);
167 pipe_resource_reference(&strb
->texture
, NULL
);
174 * gl_renderbuffer::GetPointer()
177 null_get_pointer(struct gl_context
* ctx
, struct gl_renderbuffer
*rb
,
180 /* By returning NULL we force all software rendering to go through
184 assert(0); /* Should never get called with softpipe */
191 * Called via ctx->Driver.NewFramebuffer()
193 static struct gl_framebuffer
*
194 st_new_framebuffer(struct gl_context
*ctx
, GLuint name
)
196 /* XXX not sure we need to subclass gl_framebuffer for pipe */
197 return _mesa_new_framebuffer(ctx
, name
);
202 * Called via ctx->Driver.NewRenderbuffer()
204 static struct gl_renderbuffer
*
205 st_new_renderbuffer(struct gl_context
*ctx
, GLuint name
)
207 struct st_renderbuffer
*strb
= ST_CALLOC_STRUCT(st_renderbuffer
);
209 _mesa_init_renderbuffer(&strb
->Base
, name
);
210 strb
->Base
.Delete
= st_renderbuffer_delete
;
211 strb
->Base
.AllocStorage
= st_renderbuffer_alloc_storage
;
212 strb
->Base
.GetPointer
= null_get_pointer
;
213 strb
->format
= PIPE_FORMAT_NONE
;
221 * Allocate a renderbuffer for a an on-screen window (not a user-created
222 * renderbuffer). The window system code determines the format.
224 struct gl_renderbuffer
*
225 st_new_renderbuffer_fb(enum pipe_format format
, int samples
, boolean sw
)
227 struct st_renderbuffer
*strb
;
229 strb
= ST_CALLOC_STRUCT(st_renderbuffer
);
231 _mesa_error(NULL
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
235 _mesa_init_renderbuffer(&strb
->Base
, 0);
236 strb
->Base
.ClassID
= 0x4242; /* just a unique value */
237 strb
->Base
.NumSamples
= samples
;
238 strb
->Base
.Format
= st_pipe_format_to_mesa_format(format
);
239 strb
->Base
._BaseFormat
= _mesa_get_format_base_format(strb
->Base
.Format
);
240 strb
->Base
.DataType
= st_format_datatype(format
);
241 strb
->format
= format
;
245 case PIPE_FORMAT_R8G8B8A8_UNORM
:
246 case PIPE_FORMAT_B8G8R8A8_UNORM
:
247 case PIPE_FORMAT_A8R8G8B8_UNORM
:
248 case PIPE_FORMAT_R8G8B8X8_UNORM
:
249 case PIPE_FORMAT_B8G8R8X8_UNORM
:
250 case PIPE_FORMAT_X8R8G8B8_UNORM
:
251 case PIPE_FORMAT_B5G5R5A1_UNORM
:
252 case PIPE_FORMAT_B4G4R4A4_UNORM
:
253 case PIPE_FORMAT_B5G6R5_UNORM
:
254 strb
->Base
.InternalFormat
= GL_RGBA
;
256 case PIPE_FORMAT_Z16_UNORM
:
257 strb
->Base
.InternalFormat
= GL_DEPTH_COMPONENT16
;
259 case PIPE_FORMAT_Z32_UNORM
:
260 strb
->Base
.InternalFormat
= GL_DEPTH_COMPONENT32
;
262 case PIPE_FORMAT_Z24_UNORM_S8_USCALED
:
263 case PIPE_FORMAT_S8_USCALED_Z24_UNORM
:
264 case PIPE_FORMAT_Z24X8_UNORM
:
265 case PIPE_FORMAT_X8Z24_UNORM
:
266 strb
->Base
.InternalFormat
= GL_DEPTH24_STENCIL8_EXT
;
268 case PIPE_FORMAT_S8_USCALED
:
269 strb
->Base
.InternalFormat
= GL_STENCIL_INDEX8_EXT
;
271 case PIPE_FORMAT_R16G16B16A16_SNORM
:
273 strb
->Base
.InternalFormat
= GL_RGBA16_SNORM
;
275 case PIPE_FORMAT_R8_UNORM
:
276 strb
->Base
.InternalFormat
= GL_R8
;
278 case PIPE_FORMAT_R8G8_UNORM
:
279 strb
->Base
.InternalFormat
= GL_RG8
;
281 case PIPE_FORMAT_R16_UNORM
:
282 strb
->Base
.InternalFormat
= GL_R16
;
284 case PIPE_FORMAT_R16G16_UNORM
:
285 strb
->Base
.InternalFormat
= GL_RG16
;
289 "Unexpected format in st_new_renderbuffer_fb");
294 /* st-specific methods */
295 strb
->Base
.Delete
= st_renderbuffer_delete
;
296 strb
->Base
.AllocStorage
= st_renderbuffer_alloc_storage
;
297 strb
->Base
.GetPointer
= null_get_pointer
;
299 /* surface is allocated in st_renderbuffer_alloc_storage() */
300 strb
->surface
= NULL
;
309 * Called via ctx->Driver.BindFramebufferEXT().
312 st_bind_framebuffer(struct gl_context
*ctx
, GLenum target
,
313 struct gl_framebuffer
*fb
, struct gl_framebuffer
*fbread
)
319 * Called by ctx->Driver.FramebufferRenderbuffer
322 st_framebuffer_renderbuffer(struct gl_context
*ctx
,
323 struct gl_framebuffer
*fb
,
325 struct gl_renderbuffer
*rb
)
327 /* XXX no need for derivation? */
328 _mesa_framebuffer_renderbuffer(ctx
, fb
, attachment
, rb
);
333 * Called by ctx->Driver.RenderTexture
336 st_render_texture(struct gl_context
*ctx
,
337 struct gl_framebuffer
*fb
,
338 struct gl_renderbuffer_attachment
*att
)
340 struct st_context
*st
= st_context(ctx
);
341 struct pipe_context
*pipe
= st
->pipe
;
342 struct st_renderbuffer
*strb
;
343 struct gl_renderbuffer
*rb
;
344 struct pipe_resource
*pt
;
345 struct st_texture_object
*stObj
;
346 const struct gl_texture_image
*texImage
;
347 struct pipe_surface surf_tmpl
;
349 if (!st_finalize_texture(ctx
, pipe
, att
->Texture
))
352 pt
= st_get_texobj_resource(att
->Texture
);
355 /* get pointer to texture image we're rendeing to */
356 texImage
= _mesa_get_attachment_teximage(att
);
358 /* create new renderbuffer which wraps the texture image */
359 rb
= st_new_renderbuffer(ctx
, 0);
361 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glFramebufferTexture()");
365 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
366 assert(rb
->RefCount
== 1);
367 rb
->AllocStorage
= NULL
; /* should not get called */
368 strb
= st_renderbuffer(rb
);
370 assert(strb
->Base
.RefCount
> 0);
372 /* get the texture for the texture object */
373 stObj
= st_texture_object(att
->Texture
);
375 /* point renderbuffer at texobject */
377 strb
->rtt_level
= att
->TextureLevel
;
378 strb
->rtt_face
= att
->CubeMapFace
;
379 strb
->rtt_slice
= att
->Zoffset
;
381 rb
->Width
= texImage
->Width2
;
382 rb
->Height
= texImage
->Height2
;
383 rb
->_BaseFormat
= texImage
->_BaseFormat
;
384 rb
->InternalFormat
= texImage
->InternalFormat
;
385 /*printf("***** render to texture level %d: %d x %d\n", att->TextureLevel, rb->Width, rb->Height);*/
387 /*printf("***** pipe texture %d x %d\n", pt->width0, pt->height0);*/
389 pipe_resource_reference( &strb
->texture
, pt
);
391 pipe_surface_reference(&strb
->surface
, NULL
);
393 assert(strb
->rtt_level
<= strb
->texture
->last_level
);
395 /* new surface for rendering into the texture */
396 memset(&surf_tmpl
, 0, sizeof(surf_tmpl
));
397 surf_tmpl
.format
= ctx
->Color
.sRGBEnabled
? strb
->texture
->format
: util_format_linear(strb
->texture
->format
);
398 surf_tmpl
.usage
= PIPE_BIND_RENDER_TARGET
;
399 surf_tmpl
.u
.tex
.level
= strb
->rtt_level
;
400 surf_tmpl
.u
.tex
.first_layer
= strb
->rtt_face
+ strb
->rtt_slice
;
401 surf_tmpl
.u
.tex
.last_layer
= strb
->rtt_face
+ strb
->rtt_slice
;
402 strb
->surface
= pipe
->create_surface(pipe
,
406 strb
->format
= pt
->format
;
408 strb
->Base
.Format
= st_pipe_format_to_mesa_format(pt
->format
);
409 strb
->Base
.DataType
= st_format_datatype(pt
->format
);
412 printf("RENDER TO TEXTURE obj=%p pt=%p surf=%p %d x %d\n",
413 att->Texture, pt, strb->surface, rb->Width, rb->Height);
416 /* Invalidate buffer state so that the pipe's framebuffer state
418 * That's where the new renderbuffer (which we just created) gets
419 * passed to the pipe as a (color/depth) render target.
421 st_invalidate_state(ctx
, _NEW_BUFFERS
);
426 * Called via ctx->Driver.FinishRenderTexture.
429 st_finish_render_texture(struct gl_context
*ctx
,
430 struct gl_renderbuffer_attachment
*att
)
432 struct st_renderbuffer
*strb
= st_renderbuffer(att
->Renderbuffer
);
440 printf("FINISH RENDER TO TEXTURE surf=%p\n", strb->surface);
443 /* restore previous framebuffer state */
444 st_invalidate_state(ctx
, _NEW_BUFFERS
);
449 * Validate a renderbuffer attachment for a particular set of bindings.
452 st_validate_attachment(struct gl_context
*ctx
,
453 struct pipe_screen
*screen
,
454 const struct gl_renderbuffer_attachment
*att
,
457 const struct st_texture_object
*stObj
= st_texture_object(att
->Texture
);
458 enum pipe_format format
;
461 /* Only validate texture attachments for now, since
462 * st_renderbuffer_alloc_storage makes sure that
463 * the format is supported.
465 if (att
->Type
!= GL_TEXTURE
)
471 format
= stObj
->pt
->format
;
472 texFormat
= _mesa_get_attachment_teximage_const(att
)->TexFormat
;
474 /* If the encoding is sRGB and sRGB rendering cannot be enabled,
475 * check for linear format support instead.
476 * Later when we create a surface, we change the format to a linear one. */
477 if (!ctx
->Const
.sRGBCapable
&&
478 _mesa_get_format_color_encoding(texFormat
) == GL_SRGB
) {
479 const gl_format linearFormat
= _mesa_get_srgb_format_linear(texFormat
);
480 format
= st_mesa_format_to_pipe_format(linearFormat
);
483 return screen
->is_format_supported(screen
, format
,
485 stObj
->pt
->nr_samples
, bindings
);
490 * Check if two renderbuffer attachments name a combined depth/stencil
494 st_is_depth_stencil_combined(const struct gl_renderbuffer_attachment
*depth
,
495 const struct gl_renderbuffer_attachment
*stencil
)
497 assert(depth
&& stencil
);
499 if (depth
->Type
== stencil
->Type
) {
500 if (depth
->Type
== GL_RENDERBUFFER_EXT
&&
501 depth
->Renderbuffer
== stencil
->Renderbuffer
)
504 if (depth
->Type
== GL_TEXTURE
&&
505 depth
->Texture
== stencil
->Texture
)
514 * Check that the framebuffer configuration is valid in terms of what
515 * the driver can support.
517 * For Gallium we only supports combined Z+stencil, not separate buffers.
520 st_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
522 struct st_context
*st
= st_context(ctx
);
523 struct pipe_screen
*screen
= st
->pipe
->screen
;
524 const struct gl_renderbuffer_attachment
*depth
=
525 &fb
->Attachment
[BUFFER_DEPTH
];
526 const struct gl_renderbuffer_attachment
*stencil
=
527 &fb
->Attachment
[BUFFER_STENCIL
];
529 enum pipe_format first_format
= PIPE_FORMAT_NONE
;
530 boolean mixed_formats
=
531 screen
->get_param(screen
, PIPE_CAP_MIXED_COLORBUFFER_FORMATS
) != 0;
533 if (depth
->Type
&& stencil
->Type
&& depth
->Type
!= stencil
->Type
) {
534 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
537 if (depth
->Type
== GL_RENDERBUFFER_EXT
&&
538 stencil
->Type
== GL_RENDERBUFFER_EXT
&&
539 depth
->Renderbuffer
!= stencil
->Renderbuffer
) {
540 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
543 if (depth
->Type
== GL_TEXTURE
&&
544 stencil
->Type
== GL_TEXTURE
&&
545 depth
->Texture
!= stencil
->Texture
) {
546 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
550 if (!st_validate_attachment(ctx
,
553 PIPE_BIND_DEPTH_STENCIL
)) {
554 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
557 if (!st_validate_attachment(ctx
,
560 PIPE_BIND_DEPTH_STENCIL
)) {
561 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
564 for (i
= 0; i
< ctx
->Const
.MaxColorAttachments
; i
++) {
565 struct gl_renderbuffer_attachment
*att
=
566 &fb
->Attachment
[BUFFER_COLOR0
+ i
];
567 enum pipe_format format
;
569 if (!st_validate_attachment(ctx
,
572 PIPE_BIND_RENDER_TARGET
)) {
573 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
577 if (!mixed_formats
) {
578 /* Disallow mixed formats. */
579 if (att
->Type
!= GL_NONE
) {
580 format
= st_renderbuffer(att
->Renderbuffer
)->surface
->format
;
585 if (first_format
== PIPE_FORMAT_NONE
) {
586 first_format
= format
;
587 } else if (format
!= first_format
) {
588 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
597 * Called via glDrawBuffer.
600 st_DrawBuffers(struct gl_context
*ctx
, GLsizei count
, const GLenum
*buffers
)
602 struct st_context
*st
= st_context(ctx
);
603 struct gl_framebuffer
*fb
= ctx
->DrawBuffer
;
609 /* add the renderbuffers on demand */
610 for (i
= 0; i
< fb
->_NumColorDrawBuffers
; i
++) {
611 gl_buffer_index idx
= fb
->_ColorDrawBufferIndexes
[i
];
612 st_manager_add_color_renderbuffer(st
, fb
, idx
);
618 * Called via glReadBuffer.
621 st_ReadBuffer(struct gl_context
*ctx
, GLenum buffer
)
623 struct st_context
*st
= st_context(ctx
);
624 struct gl_framebuffer
*fb
= ctx
->ReadBuffer
;
628 /* add the renderbuffer on demand */
629 st_manager_add_color_renderbuffer(st
, fb
, fb
->_ColorReadBufferIndex
);
633 void st_init_fbo_functions(struct dd_function_table
*functions
)
635 #if FEATURE_EXT_framebuffer_object
636 functions
->NewFramebuffer
= st_new_framebuffer
;
637 functions
->NewRenderbuffer
= st_new_renderbuffer
;
638 functions
->BindFramebuffer
= st_bind_framebuffer
;
639 functions
->FramebufferRenderbuffer
= st_framebuffer_renderbuffer
;
640 functions
->RenderTexture
= st_render_texture
;
641 functions
->FinishRenderTexture
= st_finish_render_texture
;
642 functions
->ValidateFramebuffer
= st_validate_framebuffer
;
644 /* no longer needed by core Mesa, drivers handle resizes...
645 functions->ResizeBuffers = st_resize_buffers;
648 functions
->DrawBuffers
= st_DrawBuffers
;
649 functions
->ReadBuffer
= st_ReadBuffer
;