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/**************************************************************************
*
* Copyright 2007 VMware, Inc.
* 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 VMWARE 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.
*
**************************************************************************/
#include "main/context.h"
#include "main/viewport.h"
#include "st_context.h"
#include "st_atom.h"
#include "st_util.h"
#include "pipe/p_context.h"
#include "cso_cache/cso_context.h"
/**
* Update the viewport transformation matrix. Depends on:
* - viewport pos/size
* - depthrange
* - window pos/size or FBO size
*/
void
st_update_viewport( struct st_context *st )
{
struct gl_context *ctx = st->ctx;
unsigned i;
/* _NEW_VIEWPORT
*/
for (i = 0; i < st->state.num_viewports; i++) {
float *scale = st->state.viewport[i].scale;
float *translate = st->state.viewport[i].translate;
_mesa_get_viewport_xform(ctx, i, scale, translate);
/* _NEW_BUFFERS */
/* Drawing to a window where the coordinate system is upside down. */
if (st->state.fb_orientation == Y_0_TOP) {
scale[1] *= -1;
translate[1] = st->state.fb_height - translate[1];
}
}
cso_set_viewport(st->cso_context, &st->state.viewport[0]);
if (st->state.num_viewports > 1) {
struct pipe_context *pipe = st->pipe;
pipe->set_viewport_states(pipe, 1, st->state.num_viewports - 1,
&st->state.viewport[1]);
}
}
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