1 /**************************************************************************
3 * Copyright 2006 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 **************************************************************************/
29 #include "main/imports.h"
30 #include "main/macros.h"
31 #include "main/mtypes.h"
32 #include "main/fbobject.h"
33 #include "main/framebuffer.h"
34 #include "main/renderbuffer.h"
35 #include "main/context.h"
36 #include "main/texrender.h"
37 #include "drivers/common/meta.h"
39 #include "intel_context.h"
40 #include "intel_batchbuffer.h"
41 #include "intel_buffers.h"
42 #include "intel_fbo.h"
43 #include "intel_mipmap_tree.h"
44 #include "intel_regions.h"
47 #define FILE_DEBUG_FLAG DEBUG_FBO
51 * Create a new framebuffer object.
53 static struct gl_framebuffer
*
54 intel_new_framebuffer(GLcontext
* ctx
, GLuint name
)
56 /* Only drawable state in intel_framebuffer at this time, just use Mesa's
59 return _mesa_new_framebuffer(ctx
, name
);
63 /** Called by gl_renderbuffer::Delete() */
65 intel_delete_renderbuffer(struct gl_renderbuffer
*rb
)
67 GET_CURRENT_CONTEXT(ctx
);
68 struct intel_context
*intel
= intel_context(ctx
);
69 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
73 if (intel
&& irb
->region
) {
74 intel_region_release(&irb
->region
);
82 * Return a pointer to a specific pixel in a renderbuffer.
85 intel_get_pointer(GLcontext
* ctx
, struct gl_renderbuffer
*rb
,
88 /* By returning NULL we force all software rendering to go through
96 * Called via glRenderbufferStorageEXT() to set the format and allocate
97 * storage for a user-created renderbuffer.
100 intel_alloc_renderbuffer_storage(GLcontext
* ctx
, struct gl_renderbuffer
*rb
,
101 GLenum internalFormat
,
102 GLuint width
, GLuint height
)
104 struct intel_context
*intel
= intel_context(ctx
);
105 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
108 ASSERT(rb
->Name
!= 0);
110 switch (internalFormat
) {
114 rb
->Format
= MESA_FORMAT_RGB565
;
115 rb
->DataType
= GL_UNSIGNED_BYTE
;
122 rb
->Format
= MESA_FORMAT_XRGB8888
;
123 rb
->DataType
= GL_UNSIGNED_BYTE
;
133 rb
->Format
= MESA_FORMAT_ARGB8888
;
134 rb
->DataType
= GL_UNSIGNED_BYTE
;
136 case GL_STENCIL_INDEX
:
137 case GL_STENCIL_INDEX1_EXT
:
138 case GL_STENCIL_INDEX4_EXT
:
139 case GL_STENCIL_INDEX8_EXT
:
140 case GL_STENCIL_INDEX16_EXT
:
141 /* alloc a depth+stencil buffer */
142 rb
->Format
= MESA_FORMAT_S8_Z24
;
143 rb
->DataType
= GL_UNSIGNED_INT_24_8_EXT
;
145 case GL_DEPTH_COMPONENT16
:
146 rb
->Format
= MESA_FORMAT_Z16
;
147 rb
->DataType
= GL_UNSIGNED_SHORT
;
149 case GL_DEPTH_COMPONENT
:
150 case GL_DEPTH_COMPONENT24
:
151 case GL_DEPTH_COMPONENT32
:
152 rb
->Format
= MESA_FORMAT_S8_Z24
;
153 rb
->DataType
= GL_UNSIGNED_INT_24_8_EXT
;
155 case GL_DEPTH_STENCIL_EXT
:
156 case GL_DEPTH24_STENCIL8_EXT
:
157 rb
->Format
= MESA_FORMAT_S8_Z24
;
158 rb
->DataType
= GL_UNSIGNED_INT_24_8_EXT
;
162 "Unexpected format in intel_alloc_renderbuffer_storage");
166 rb
->_BaseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
167 cpp
= _mesa_get_format_bytes(rb
->Format
);
171 /* free old region */
173 intel_region_release(&irb
->region
);
176 /* allocate new memory region/renderbuffer */
178 /* alloc hardware renderbuffer */
179 DBG("Allocating %d x %d Intel RBO\n", width
, height
);
181 irb
->region
= intel_region_alloc(intel
, I915_TILING_NONE
, cpp
,
182 width
, height
, GL_TRUE
);
184 return GL_FALSE
; /* out of memory? */
186 ASSERT(irb
->region
->buffer
);
195 #if FEATURE_OES_EGL_image
197 intel_image_target_renderbuffer_storage(GLcontext
*ctx
,
198 struct gl_renderbuffer
*rb
,
201 struct intel_context
*intel
= intel_context(ctx
);
202 struct intel_renderbuffer
*irb
;
206 screen
= intel
->intelScreen
->driScrnPriv
;
207 image
= screen
->dri2
.image
->lookupEGLImage(intel
->driContext
, image_handle
,
208 intel
->driContext
->loaderPrivate
);
212 irb
= intel_renderbuffer(rb
);
214 intel_region_release(&irb
->region
);
215 intel_region_reference(&irb
->region
, image
->region
);
217 rb
->InternalFormat
= image
->internal_format
;
218 rb
->Width
= image
->region
->width
;
219 rb
->Height
= image
->region
->height
;
220 rb
->Format
= image
->format
;
221 rb
->DataType
= image
->data_type
;
222 rb
->_BaseFormat
= _mesa_base_fbo_format(&intel
->ctx
,
223 image
->internal_format
);
228 * Called for each hardware renderbuffer when a _window_ is resized.
229 * Just update fields.
230 * Not used for user-created renderbuffers!
233 intel_alloc_window_storage(GLcontext
* ctx
, struct gl_renderbuffer
*rb
,
234 GLenum internalFormat
, GLuint width
, GLuint height
)
236 ASSERT(rb
->Name
== 0);
239 rb
->InternalFormat
= internalFormat
;
246 intel_resize_buffers(GLcontext
*ctx
, struct gl_framebuffer
*fb
,
247 GLuint width
, GLuint height
)
251 _mesa_resize_framebuffer(ctx
, fb
, width
, height
);
253 fb
->Initialized
= GL_TRUE
; /* XXX remove someday */
260 /* Make sure all window system renderbuffers are up to date */
261 for (i
= BUFFER_FRONT_LEFT
; i
<= BUFFER_BACK_RIGHT
; i
++) {
262 struct gl_renderbuffer
*rb
= fb
->Attachment
[i
].Renderbuffer
;
264 /* only resize if size is changing */
265 if (rb
&& (rb
->Width
!= width
|| rb
->Height
!= height
)) {
266 rb
->AllocStorage(ctx
, rb
, rb
->InternalFormat
, width
, height
);
272 /** Dummy function for gl_renderbuffer::AllocStorage() */
274 intel_nop_alloc_storage(GLcontext
* ctx
, struct gl_renderbuffer
*rb
,
275 GLenum internalFormat
, GLuint width
, GLuint height
)
277 _mesa_problem(ctx
, "intel_op_alloc_storage should never be called.");
283 intel_renderbuffer_set_region(struct intel_renderbuffer
*rb
,
284 struct intel_region
*region
)
286 struct intel_region
*old
;
290 intel_region_reference(&rb
->region
, region
);
291 intel_region_release(&old
);
296 * Create a new intel_renderbuffer which corresponds to an on-screen window,
297 * not a user-created renderbuffer.
299 struct intel_renderbuffer
*
300 intel_create_renderbuffer(gl_format format
)
302 GET_CURRENT_CONTEXT(ctx
);
304 struct intel_renderbuffer
*irb
;
306 irb
= CALLOC_STRUCT(intel_renderbuffer
);
308 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
312 _mesa_init_renderbuffer(&irb
->Base
, 0);
313 irb
->Base
.ClassID
= INTEL_RB_CLASS
;
316 case MESA_FORMAT_RGB565
:
317 irb
->Base
._BaseFormat
= GL_RGB
;
318 irb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
320 case MESA_FORMAT_XRGB8888
:
321 irb
->Base
._BaseFormat
= GL_RGB
;
322 irb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
324 case MESA_FORMAT_ARGB8888
:
325 irb
->Base
._BaseFormat
= GL_RGBA
;
326 irb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
328 case MESA_FORMAT_Z16
:
329 irb
->Base
._BaseFormat
= GL_DEPTH_COMPONENT
;
330 irb
->Base
.DataType
= GL_UNSIGNED_SHORT
;
332 case MESA_FORMAT_X8_Z24
:
333 irb
->Base
._BaseFormat
= GL_DEPTH_COMPONENT
;
334 irb
->Base
.DataType
= GL_UNSIGNED_INT
;
336 case MESA_FORMAT_S8_Z24
:
337 irb
->Base
._BaseFormat
= GL_DEPTH_STENCIL
;
338 irb
->Base
.DataType
= GL_UNSIGNED_INT_24_8_EXT
;
342 "Unexpected intFormat in intel_create_renderbuffer");
347 irb
->Base
.Format
= format
;
348 irb
->Base
.InternalFormat
= irb
->Base
._BaseFormat
;
350 /* intel-specific methods */
351 irb
->Base
.Delete
= intel_delete_renderbuffer
;
352 irb
->Base
.AllocStorage
= intel_alloc_window_storage
;
353 irb
->Base
.GetPointer
= intel_get_pointer
;
360 * Create a new renderbuffer object.
361 * Typically called via glBindRenderbufferEXT().
363 static struct gl_renderbuffer
*
364 intel_new_renderbuffer(GLcontext
* ctx
, GLuint name
)
366 /*struct intel_context *intel = intel_context(ctx); */
367 struct intel_renderbuffer
*irb
;
369 irb
= CALLOC_STRUCT(intel_renderbuffer
);
371 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "creating renderbuffer");
375 _mesa_init_renderbuffer(&irb
->Base
, name
);
376 irb
->Base
.ClassID
= INTEL_RB_CLASS
;
378 /* intel-specific methods */
379 irb
->Base
.Delete
= intel_delete_renderbuffer
;
380 irb
->Base
.AllocStorage
= intel_alloc_renderbuffer_storage
;
381 irb
->Base
.GetPointer
= intel_get_pointer
;
382 /* span routines set in alloc_storage function */
389 * Called via glBindFramebufferEXT().
392 intel_bind_framebuffer(GLcontext
* ctx
, GLenum target
,
393 struct gl_framebuffer
*fb
, struct gl_framebuffer
*fbread
)
395 if (target
== GL_FRAMEBUFFER_EXT
|| target
== GL_DRAW_FRAMEBUFFER_EXT
) {
396 intel_draw_buffer(ctx
, fb
);
399 /* don't need to do anything if target == GL_READ_FRAMEBUFFER_EXT */
405 * Called via glFramebufferRenderbufferEXT().
408 intel_framebuffer_renderbuffer(GLcontext
* ctx
,
409 struct gl_framebuffer
*fb
,
410 GLenum attachment
, struct gl_renderbuffer
*rb
)
412 DBG("Intel FramebufferRenderbuffer %u %u\n", fb
->Name
, rb
? rb
->Name
: 0);
416 _mesa_framebuffer_renderbuffer(ctx
, fb
, attachment
, rb
);
417 intel_draw_buffer(ctx
, fb
);
422 intel_update_wrapper(GLcontext
*ctx
, struct intel_renderbuffer
*irb
,
423 struct gl_texture_image
*texImage
)
425 if (texImage
->TexFormat
== MESA_FORMAT_ARGB8888
) {
426 irb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
427 DBG("Render to RGBA8 texture OK\n");
429 else if (texImage
->TexFormat
== MESA_FORMAT_XRGB8888
) {
430 irb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
431 DBG("Render to XGBA8 texture OK\n");
433 else if (texImage
->TexFormat
== MESA_FORMAT_RGB565
) {
434 irb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
435 DBG("Render to RGB5 texture OK\n");
437 else if (texImage
->TexFormat
== MESA_FORMAT_ARGB1555
) {
438 irb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
439 DBG("Render to ARGB1555 texture OK\n");
441 else if (texImage
->TexFormat
== MESA_FORMAT_ARGB4444
) {
442 irb
->Base
.DataType
= GL_UNSIGNED_BYTE
;
443 DBG("Render to ARGB4444 texture OK\n");
445 else if (texImage
->TexFormat
== MESA_FORMAT_Z16
) {
446 irb
->Base
.DataType
= GL_UNSIGNED_SHORT
;
447 DBG("Render to DEPTH16 texture OK\n");
449 else if (texImage
->TexFormat
== MESA_FORMAT_S8_Z24
) {
450 irb
->Base
.DataType
= GL_UNSIGNED_INT_24_8_EXT
;
451 DBG("Render to DEPTH_STENCIL texture OK\n");
454 DBG("Render to texture BAD FORMAT %s\n",
455 _mesa_get_format_name(texImage
->TexFormat
));
459 irb
->Base
.Format
= texImage
->TexFormat
;
461 irb
->Base
.InternalFormat
= texImage
->InternalFormat
;
462 irb
->Base
._BaseFormat
= _mesa_base_fbo_format(ctx
, irb
->Base
.InternalFormat
);
463 irb
->Base
.Width
= texImage
->Width
;
464 irb
->Base
.Height
= texImage
->Height
;
466 irb
->Base
.Delete
= intel_delete_renderbuffer
;
467 irb
->Base
.AllocStorage
= intel_nop_alloc_storage
;
474 * When glFramebufferTexture[123]D is called this function sets up the
475 * gl_renderbuffer wrapper around the texture image.
476 * This will have the region info needed for hardware rendering.
478 static struct intel_renderbuffer
*
479 intel_wrap_texture(GLcontext
* ctx
, struct gl_texture_image
*texImage
)
481 const GLuint name
= ~0; /* not significant, but distinct for debugging */
482 struct intel_renderbuffer
*irb
;
484 /* make an intel_renderbuffer to wrap the texture image */
485 irb
= CALLOC_STRUCT(intel_renderbuffer
);
487 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glFramebufferTexture");
491 _mesa_init_renderbuffer(&irb
->Base
, name
);
492 irb
->Base
.ClassID
= INTEL_RB_CLASS
;
494 if (!intel_update_wrapper(ctx
, irb
, texImage
)) {
504 * Called by glFramebufferTexture[123]DEXT() (and other places) to
505 * prepare for rendering into texture memory. This might be called
506 * many times to choose different texture levels, cube faces, etc
507 * before intel_finish_render_texture() is ever called.
510 intel_render_texture(GLcontext
* ctx
,
511 struct gl_framebuffer
*fb
,
512 struct gl_renderbuffer_attachment
*att
)
514 struct gl_texture_image
*newImage
515 = att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
516 struct intel_renderbuffer
*irb
= intel_renderbuffer(att
->Renderbuffer
);
517 struct intel_texture_image
*intel_image
;
524 intel_image
= intel_texture_image(newImage
);
525 if (!intel_image
->mt
) {
526 /* Fallback on drawing to a texture that doesn't have a miptree
527 * (has a border, width/height 0, etc.)
529 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
);
530 _mesa_render_texture(ctx
, fb
, att
);
534 irb
= intel_wrap_texture(ctx
, newImage
);
536 /* bind the wrapper to the attachment point */
537 _mesa_reference_renderbuffer(&att
->Renderbuffer
, &irb
->Base
);
540 /* fallback to software rendering */
541 _mesa_render_texture(ctx
, fb
, att
);
546 if (!intel_update_wrapper(ctx
, irb
, newImage
)) {
547 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
);
548 _mesa_render_texture(ctx
, fb
, att
);
552 DBG("Begin render texture tid %lx tex=%u w=%d h=%d refcount=%d\n",
554 att
->Texture
->Name
, newImage
->Width
, newImage
->Height
,
557 /* point the renderbufer's region to the texture image region */
558 if (irb
->region
!= intel_image
->mt
->region
) {
560 intel_region_release(&irb
->region
);
561 intel_region_reference(&irb
->region
, intel_image
->mt
->region
);
564 /* compute offset of the particular 2D image within the texture region */
565 intel_miptree_get_image_offset(intel_image
->mt
,
571 intel_image
->mt
->region
->draw_offset
= (dst_y
* intel_image
->mt
->region
->pitch
+
572 dst_x
) * intel_image
->mt
->cpp
;
573 intel_image
->mt
->region
->draw_x
= dst_x
;
574 intel_image
->mt
->region
->draw_y
= dst_y
;
575 intel_image
->used_as_render_target
= GL_TRUE
;
577 /* update drawing region, etc */
578 intel_draw_buffer(ctx
, fb
);
583 * Called by Mesa when rendering to a texture is done.
586 intel_finish_render_texture(GLcontext
* ctx
,
587 struct gl_renderbuffer_attachment
*att
)
589 struct intel_context
*intel
= intel_context(ctx
);
590 struct gl_texture_object
*tex_obj
= att
->Texture
;
591 struct gl_texture_image
*image
=
592 tex_obj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
593 struct intel_texture_image
*intel_image
= intel_texture_image(image
);
595 /* Flag that this image may now be validated into the object's miptree. */
596 intel_image
->used_as_render_target
= GL_FALSE
;
598 /* Since we've (probably) rendered to the texture and will (likely) use
599 * it in the texture domain later on in this batchbuffer, flush the
600 * batch. Once again, we wish for a domain tracker in libdrm to cover
601 * usage inside of a batchbuffer like GEM does in the kernel.
603 intel_batchbuffer_emit_mi_flush(intel
->batch
);
607 * Do additional "completeness" testing of a framebuffer object.
610 intel_validate_framebuffer(GLcontext
*ctx
, struct gl_framebuffer
*fb
)
612 const struct intel_renderbuffer
*depthRb
=
613 intel_get_renderbuffer(fb
, BUFFER_DEPTH
);
614 const struct intel_renderbuffer
*stencilRb
=
615 intel_get_renderbuffer(fb
, BUFFER_STENCIL
);
618 if (depthRb
&& stencilRb
&& stencilRb
!= depthRb
) {
619 if (ctx
->DrawBuffer
->Attachment
[BUFFER_DEPTH
].Type
== GL_TEXTURE
&&
620 ctx
->DrawBuffer
->Attachment
[BUFFER_STENCIL
].Type
== GL_TEXTURE
&&
621 (ctx
->DrawBuffer
->Attachment
[BUFFER_DEPTH
].Texture
->Name
==
622 ctx
->DrawBuffer
->Attachment
[BUFFER_STENCIL
].Texture
->Name
)) {
625 /* we only support combined depth/stencil buffers, not separate
628 DBG("Only supports combined depth/stencil (found %s, %s)\n",
629 depthRb
? _mesa_get_format_name(depthRb
->Base
.Format
): "NULL",
630 stencilRb
? _mesa_get_format_name(stencilRb
->Base
.Format
): "NULL");
631 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
635 for (i
= 0; i
< ctx
->Const
.MaxDrawBuffers
; i
++) {
636 struct gl_renderbuffer
*rb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[i
];
637 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
643 DBG("software rendering renderbuffer\n");
644 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
648 switch (irb
->Base
.Format
) {
649 case MESA_FORMAT_ARGB8888
:
650 case MESA_FORMAT_XRGB8888
:
651 case MESA_FORMAT_RGB565
:
652 case MESA_FORMAT_ARGB1555
:
653 case MESA_FORMAT_ARGB4444
:
656 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED_EXT
;
663 * Do one-time context initializations related to GL_EXT_framebuffer_object.
664 * Hook in device driver functions.
667 intel_fbo_init(struct intel_context
*intel
)
669 intel
->ctx
.Driver
.NewFramebuffer
= intel_new_framebuffer
;
670 intel
->ctx
.Driver
.NewRenderbuffer
= intel_new_renderbuffer
;
671 intel
->ctx
.Driver
.BindFramebuffer
= intel_bind_framebuffer
;
672 intel
->ctx
.Driver
.FramebufferRenderbuffer
= intel_framebuffer_renderbuffer
;
673 intel
->ctx
.Driver
.RenderTexture
= intel_render_texture
;
674 intel
->ctx
.Driver
.FinishRenderTexture
= intel_finish_render_texture
;
675 intel
->ctx
.Driver
.ResizeBuffers
= intel_resize_buffers
;
676 intel
->ctx
.Driver
.ValidateFramebuffer
= intel_validate_framebuffer
;
677 intel
->ctx
.Driver
.BlitFramebuffer
= _mesa_meta_BlitFramebuffer
;
679 #if FEATURE_OES_EGL_image
680 intel
->ctx
.Driver
.EGLImageTargetRenderbufferStorage
=
681 intel_image_target_renderbuffer_storage
;