85 lines
3.0 KiB
C
85 lines
3.0 KiB
C
/**************************************************************************
|
|
*
|
|
* 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 "main/framebuffer.h"
|
|
#include "st_context.h"
|
|
#include "st_atom.h"
|
|
#include "pipe/p_context.h"
|
|
#include "cso_cache/cso_context.h"
|
|
|
|
static enum pipe_viewport_swizzle
|
|
viewport_swizzle_from_glenum(GLenum16 swizzle)
|
|
{
|
|
return swizzle - GL_VIEWPORT_SWIZZLE_POSITIVE_X_NV;
|
|
}
|
|
|
|
/**
|
|
* 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];
|
|
}
|
|
|
|
st->state.viewport[i].swizzle_x = viewport_swizzle_from_glenum(ctx->ViewportArray[i].SwizzleX);
|
|
st->state.viewport[i].swizzle_y = viewport_swizzle_from_glenum(ctx->ViewportArray[i].SwizzleY);
|
|
st->state.viewport[i].swizzle_z = viewport_swizzle_from_glenum(ctx->ViewportArray[i].SwizzleZ);
|
|
st->state.viewport[i].swizzle_w = viewport_swizzle_from_glenum(ctx->ViewportArray[i].SwizzleW);
|
|
}
|
|
|
|
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]);
|
|
}
|
|
}
|