88 lines
3.5 KiB
C
88 lines
3.5 KiB
C
/**************************************************************************
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*
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* Copyright 2011 Marek Olšák <maraeo@gmail.com>
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifndef U_VBUF_H
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#define U_VBUF_H
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/* This module takes care of user buffer uploads and vertex format fallbacks.
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* It's designed for the drivers which don't want to use the Draw module.
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* There is a more detailed description at the beginning of the .c file.
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*/
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#include "pipe/p_context.h"
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#include "pipe/p_state.h"
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struct cso_context;
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struct u_vbuf;
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/* Hardware vertex fetcher limitations can be described by this structure. */
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struct u_vbuf_caps {
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/* Vertex format CAPs. */
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/* TRUE if hardware supports it. */
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unsigned format_fixed32:1; /* PIPE_FORMAT_*32*_FIXED */
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unsigned format_float16:1; /* PIPE_FORMAT_*16*_FLOAT */
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unsigned format_float64:1; /* PIPE_FORMAT_*64*_FLOAT */
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unsigned format_norm32:1; /* PIPE_FORMAT_*32*NORM */
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unsigned format_scaled32:1; /* PIPE_FORMAT_*32*SCALED */
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/* Whether vertex fetches don't have to be 4-byte-aligned. */
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/* TRUE if hardware supports it. */
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unsigned buffer_offset_unaligned:1;
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unsigned buffer_stride_unaligned:1;
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unsigned velem_src_offset_unaligned:1;
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/* Whether the driver supports user vertex buffers. */
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unsigned user_vertex_buffers:1;
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};
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void u_vbuf_get_caps(struct pipe_screen *screen, struct u_vbuf_caps *caps);
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struct u_vbuf *
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u_vbuf_create(struct pipe_context *pipe,
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struct u_vbuf_caps *caps, unsigned aux_vertex_buffer_index);
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void u_vbuf_destroy(struct u_vbuf *mgr);
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/* State and draw functions. */
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void u_vbuf_set_vertex_elements(struct u_vbuf *mgr, unsigned count,
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const struct pipe_vertex_element *states);
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void u_vbuf_set_vertex_buffers(struct u_vbuf *mgr,
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unsigned start_slot, unsigned count,
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const struct pipe_vertex_buffer *bufs);
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void u_vbuf_set_index_buffer(struct u_vbuf *mgr,
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const struct pipe_index_buffer *ib);
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void u_vbuf_draw_vbo(struct u_vbuf *mgr, const struct pipe_draw_info *info);
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/* Save/restore functionality. */
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void u_vbuf_save_vertex_elements(struct u_vbuf *mgr);
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void u_vbuf_restore_vertex_elements(struct u_vbuf *mgr);
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void u_vbuf_save_aux_vertex_buffer_slot(struct u_vbuf *mgr);
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void u_vbuf_restore_aux_vertex_buffer_slot(struct u_vbuf *mgr);
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#endif
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