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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"
/**
* 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;
struct gl_framebuffer *fb = st->ctx->DrawBuffer;
struct st_renderbuffer *strb;
GLuint i;
memset(&framebuffer, 0, sizeof(framebuffer));
/* Examine Mesa's ctx->DrawBuffer->_ColorDrawBuffers state
* to determine which surfaces to draw to
*/
framebuffer.num_cbufs = fb->_NumColorDrawBuffers[0];
for (i = 0; i < framebuffer.num_cbufs; i++) {
strb = st_renderbuffer(fb->_ColorDrawBuffers[0][i]);
assert(strb->surface);
framebuffer.cbufs[i] = strb->surface;
}
strb = st_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
if (strb) {
strb = st_renderbuffer(strb->Base.Wrapped);
assert(strb->surface);
framebuffer.zbuf = strb->surface;
}
strb = st_renderbuffer(fb->Attachment[BUFFER_STENCIL].Renderbuffer);
if (strb) {
strb = st_renderbuffer(strb->Base.Wrapped);
assert(strb->surface);
framebuffer.sbuf = strb->surface;
}
/* XXX: The memcmp is insufficient for eliminating redundant state changes,
* but we should probably do more work here to that end.
*/
if (1 /*memcmp(&framebuffer, &st->state.framebuffer, sizeof(framebuffer)) != 0*/) {
st->state.framebuffer = framebuffer;
st->pipe->set_framebuffer_state( st->pipe, &framebuffer );
}
}
/**
* Note that glDrawBuffer() sets _NEW_COLOR, not _NEW_BUFFER.
*/
const struct st_tracked_state st_update_framebuffer = {
.name = "st_update_framebuffer",
.dirty = {
.mesa = (_NEW_BUFFERS | _NEW_COLOR),
.st = 0,
},
.update = update_framebuffer_state
};
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