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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.
*
**************************************************************************/
#ifndef SP_SETUP_H
#define SP_SETUP_H
struct setup_context;
struct softpipe_context;
/**
* Attribute interpolation mode
*/
enum sp_interp_mode {
SP_INTERP_POS, /**< special case for frag position */
SP_INTERP_CONSTANT,
SP_INTERP_LINEAR,
SP_INTERP_PERSPECTIVE
};
struct sp_setup_info {
unsigned valid;
struct {
unsigned interp:8; /**< SP_INTERP_X */
int src_index:8;
} attrib[PIPE_MAX_SHADER_OUTPUTS];
};
void
sp_setup_tri(struct setup_context *setup,
const float (*v0)[4],
const float (*v1)[4],
const float (*v2)[4]);
void
sp_setup_line(struct setup_context *setup,
const float (*v0)[4],
const float (*v1)[4]);
void
sp_setup_point( struct setup_context *setup,
const float (*v0)[4] );
static inline unsigned
sp_clamp_viewport_idx(int idx)
{
return (PIPE_MAX_VIEWPORTS > idx && idx >= 0) ? idx : 0;
}
struct setup_context *sp_setup_create_context( struct softpipe_context *softpipe );
void sp_setup_prepare( struct setup_context *setup );
void sp_setup_destroy_context( struct setup_context *setup );
#endif
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