14a49301eSmrg/**************************************************************************
24a49301eSmrg *
3af69d88dSmrg * Copyright 2007 VMware, Inc.
44a49301eSmrg * All Rights Reserved.
54a49301eSmrg *
64a49301eSmrg * Permission is hereby granted, free of charge, to any person obtaining a
74a49301eSmrg * copy of this software and associated documentation files (the
84a49301eSmrg * "Software"), to deal in the Software without restriction, including
94a49301eSmrg * without limitation the rights to use, copy, modify, merge, publish,
104a49301eSmrg * distribute, sub license, and/or sell copies of the Software, and to
114a49301eSmrg * permit persons to whom the Software is furnished to do so, subject to
124a49301eSmrg * the following conditions:
134a49301eSmrg *
144a49301eSmrg * The above copyright notice and this permission notice (including the
154a49301eSmrg * next paragraph) shall be included in all copies or substantial portions
164a49301eSmrg * of the Software.
174a49301eSmrg *
184a49301eSmrg * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
194a49301eSmrg * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
204a49301eSmrg * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21af69d88dSmrg * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
224a49301eSmrg * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
234a49301eSmrg * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
244a49301eSmrg * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
254a49301eSmrg *
264a49301eSmrg **************************************************************************/
274a49301eSmrg#ifndef SP_SETUP_H
284a49301eSmrg#define SP_SETUP_H
294a49301eSmrg
304a49301eSmrgstruct setup_context;
314a49301eSmrgstruct softpipe_context;
324a49301eSmrg
3301e04c3fSmrg/**
3401e04c3fSmrg * Attribute interpolation mode
3501e04c3fSmrg */
3601e04c3fSmrgenum sp_interp_mode {
3701e04c3fSmrg   SP_INTERP_POS,       /**< special case for frag position */
3801e04c3fSmrg   SP_INTERP_CONSTANT,
3901e04c3fSmrg   SP_INTERP_LINEAR,
4001e04c3fSmrg   SP_INTERP_PERSPECTIVE
4101e04c3fSmrg};
4201e04c3fSmrg
4301e04c3fSmrg
4401e04c3fSmrgstruct sp_setup_info {
4501e04c3fSmrg   unsigned valid;
4601e04c3fSmrg   struct {
4701e04c3fSmrg      unsigned interp:8;      /**< SP_INTERP_X */
4801e04c3fSmrg      int src_index:8;
4901e04c3fSmrg   } attrib[PIPE_MAX_SHADER_OUTPUTS];
5001e04c3fSmrg};
5101e04c3fSmrg
524a49301eSmrgvoid
5301e04c3fSmrgsp_setup_tri(struct setup_context *setup,
5401e04c3fSmrg             const float (*v0)[4],
5501e04c3fSmrg             const float (*v1)[4],
5601e04c3fSmrg             const float (*v2)[4]);
574a49301eSmrg
584a49301eSmrgvoid
594a49301eSmrgsp_setup_line(struct setup_context *setup,
604a49301eSmrg           const float (*v0)[4],
614a49301eSmrg           const float (*v1)[4]);
624a49301eSmrg
634a49301eSmrgvoid
644a49301eSmrgsp_setup_point( struct setup_context *setup,
654a49301eSmrg             const float (*v0)[4] );
664a49301eSmrg
6701e04c3fSmrgstatic inline unsigned
6801e04c3fSmrgsp_clamp_viewport_idx(int idx)
6901e04c3fSmrg{
7001e04c3fSmrg   return (PIPE_MAX_VIEWPORTS > idx && idx >= 0) ? idx : 0;
7101e04c3fSmrg}
724a49301eSmrg
734a49301eSmrgstruct setup_context *sp_setup_create_context( struct softpipe_context *softpipe );
744a49301eSmrgvoid sp_setup_prepare( struct setup_context *setup );
754a49301eSmrgvoid sp_setup_destroy_context( struct setup_context *setup );
764a49301eSmrg
774a49301eSmrg#endif
78