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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
* Brian Paul
*/
#include "st_context.h"
#include "st_atom.h"
#include "st_cb_fbo.h"
#include "pipe/p_context.h"
#include "cso_cache/cso_context.h"
/**
* Update framebuffer state (color, depth, stencil, etc. buffers)
* XXX someday: separate draw/read buffers.
*/
static void
update_framebuffer_state( struct st_context *st )
{
struct pipe_framebuffer_state *framebuffer = &st->state.framebuffer;
struct gl_framebuffer *fb = st->ctx->DrawBuffer;
struct st_renderbuffer *strb;
GLuint i, j;
memset(framebuffer, 0, sizeof(*framebuffer));
framebuffer->width = fb->Width;
framebuffer->height = fb->Height;
/* Examine Mesa's ctx->DrawBuffer->_ColorDrawBuffers state
* to determine which surfaces to draw to
*/
framebuffer->num_cbufs = 0;
for (j = 0; j < MAX_DRAW_BUFFERS; j++) {
for (i = 0; i < fb->_NumColorDrawBuffers[j]; i++) {
strb = st_renderbuffer(fb->_ColorDrawBuffers[j][i]);
assert(strb->surface);
framebuffer->cbufs[framebuffer->num_cbufs] = strb->surface;
framebuffer->num_cbufs++;
}
}
strb = st_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
if (strb) {
strb = st_renderbuffer(strb->Base.Wrapped);
assert(strb->surface);
framebuffer->zsbuf = strb->surface;
}
else {
strb = st_renderbuffer(fb->Attachment[BUFFER_STENCIL].Renderbuffer);
if (strb) {
strb = st_renderbuffer(strb->Base.Wrapped);
assert(strb->surface);
framebuffer->zsbuf = strb->surface;
}
}
cso_set_framebuffer(st->cso_context, framebuffer);
if (fb->_ColorDrawBufferMask[0] & BUFFER_BIT_FRONT_LEFT) {
if (st->frontbuffer_status == FRONT_STATUS_COPY_OF_BACK) {
/* XXX copy back buf to front? */
}
/* we're assuming we'll really draw to the front buffer */
st->frontbuffer_status = FRONT_STATUS_DIRTY;
}
}
const struct st_tracked_state st_update_framebuffer = {
"st_update_framebuffer", /* name */
{ /* dirty */
_NEW_BUFFERS, /* mesa */
0, /* st */
},
update_framebuffer_state /* update */
};
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