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 * Keith Whitwell <keith@tungstengraphics.com>
34 #include "st_context.h"
36 #include "st_cb_fbo.h"
37 #include "st_public.h"
38 #include "st_texture.h"
39 #include "pipe/p_context.h"
40 #include "pipe/p_inlines.h"
41 #include "cso_cache/cso_context.h"
46 * When doing GL render to texture, we have to be sure that finalize_texture()
47 * didn't yank out the pipe_texture that we earlier created a surface for.
48 * Check for that here and create a new surface if needed.
51 update_renderbuffer_surface(struct st_context
*st
,
52 struct st_renderbuffer
*strb
)
54 struct pipe_screen
*screen
= st
->pipe
->screen
;
55 struct pipe_texture
*texture
= strb
->rtt
->pt
;
56 int rtt_width
= strb
->Base
.Width
;
57 int rtt_height
= strb
->Base
.Height
;
60 strb
->surface
->texture
!= texture
||
61 strb
->surface
->width
!= rtt_width
||
62 strb
->surface
->height
!= rtt_height
) {
64 /* find matching mipmap level size */
65 for (level
= 0; level
<= texture
->last_level
; level
++) {
66 if (texture
->width
[level
] == rtt_width
&&
67 texture
->height
[level
] == rtt_height
) {
69 pipe_surface_reference(&strb
->surface
, NULL
);
71 strb
->surface
= screen
->get_tex_surface(screen
,
76 PIPE_BUFFER_USAGE_GPU_READ
|
77 PIPE_BUFFER_USAGE_GPU_WRITE
);
79 printf("-- alloc new surface %d x %d into tex %p\n",
80 strb
->surface
->width
, strb
->surface
->height
,
91 * Update framebuffer state (color, depth, stencil, etc. buffers)
94 update_framebuffer_state( struct st_context
*st
)
96 struct pipe_framebuffer_state
*framebuffer
= &st
->state
.framebuffer
;
97 struct gl_framebuffer
*fb
= st
->ctx
->DrawBuffer
;
98 struct st_renderbuffer
*strb
;
101 framebuffer
->width
= fb
->Width
;
102 framebuffer
->height
= fb
->Height
;
104 /*printf("------ fb size %d x %d\n", fb->Width, fb->Height);*/
106 /* Examine Mesa's ctx->DrawBuffer->_ColorDrawBuffers state
107 * to determine which surfaces to draw to
109 framebuffer
->nr_cbufs
= 0;
110 for (i
= 0; i
< fb
->_NumColorDrawBuffers
; i
++) {
111 strb
= st_renderbuffer(fb
->_ColorDrawBuffers
[i
]);
114 /*printf("--------- framebuffer surface rtt %p\n", strb->rtt);*/
116 /* rendering to a GL texture, may have to update surface */
117 update_renderbuffer_surface(st
, strb
);
121 pipe_surface_reference(&framebuffer
->cbufs
[framebuffer
->nr_cbufs
],
123 framebuffer
->nr_cbufs
++;
125 strb
->defined
= GL_TRUE
; /* we'll be drawing something */
128 for (i
= framebuffer
->nr_cbufs
; i
< PIPE_MAX_COLOR_BUFS
; i
++) {
129 pipe_surface_reference(&framebuffer
->cbufs
[i
], NULL
);
133 * Depth/Stencil renderbuffer/surface.
135 strb
= st_renderbuffer(fb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
);
137 strb
= st_renderbuffer(strb
->Base
.Wrapped
);
139 /* rendering to a GL texture, may have to update surface */
140 update_renderbuffer_surface(st
, strb
);
142 pipe_surface_reference(&framebuffer
->zsbuf
, strb
->surface
);
145 strb
= st_renderbuffer(fb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
);
147 strb
= st_renderbuffer(strb
->Base
.Wrapped
);
148 assert(strb
->surface
);
149 pipe_surface_reference(&framebuffer
->zsbuf
, strb
->surface
);
152 pipe_surface_reference(&framebuffer
->zsbuf
, NULL
);
155 cso_set_framebuffer(st
->cso_context
, framebuffer
);
157 if (fb
->_ColorDrawBufferIndexes
[0] == BUFFER_FRONT_LEFT
) {
158 if (st
->frontbuffer_status
== FRONT_STATUS_COPY_OF_BACK
) {
159 /* copy back color buffer to front color buffer */
160 struct st_framebuffer
*stfb
= (struct st_framebuffer
*) fb
;
161 struct pipe_surface
*surf_front
, *surf_back
;
162 (void) st_get_framebuffer_surface(stfb
, ST_SURFACE_FRONT_LEFT
, &surf_front
);
163 (void) st_get_framebuffer_surface(stfb
, ST_SURFACE_BACK_LEFT
, &surf_back
);
165 st
->pipe
->surface_copy(st
->pipe
,
166 surf_front
, 0, 0, /* dest */
167 surf_back
, 0, 0, /* src */
168 fb
->Width
, fb
->Height
);
170 /* we're assuming we'll really draw to the front buffer */
171 st
->frontbuffer_status
= FRONT_STATUS_DIRTY
;
176 const struct st_tracked_state st_update_framebuffer
= {
177 "st_update_framebuffer", /* name */
179 _NEW_BUFFERS
, /* mesa */
180 ST_NEW_FRAMEBUFFER
, /* st */
182 update_framebuffer_state
/* update */