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/**************************************************************************
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* Copyright 2011 Marek Olšák <maraeo@gmail.com>
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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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* 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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* 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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/* This module builds upon u_upload_mgr and translate_cache and takes care of
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* user buffer uploads and vertex format fallbacks. It's designed
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* for the drivers which don't always use the Draw module. (e.g. for HWTCL)
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#include "pipe/p_context.h"
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#include "pipe/p_state.h"
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#include "util/u_transfer.h"
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/* Hardware vertex fetcher limitations can be described by this structure. */
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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 dword-aligned. */
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/* TRUE if hardware supports it. */
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unsigned fetch_dword_unaligned:1;
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* This structure should also be used to access vertex buffers
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/* This is what was set in set_vertex_buffers.
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* May contain user buffers. */
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struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
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unsigned nr_vertex_buffers;
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/* Contains only real vertex buffers.
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* Hardware drivers should use real_vertex_buffers[i]
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* instead of vertex_buffers[i].buffer. */
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struct pipe_vertex_buffer real_vertex_buffer[PIPE_MAX_ATTRIBS];
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int nr_real_vertex_buffers;
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/* The index buffer. */
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struct pipe_index_buffer index_buffer;
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/* This uploader can optionally be used by the driver.
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struct u_upload_mgr *uploader;
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struct u_vbuf_caps caps;
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struct u_vbuf_resource {
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/* Opaque type containing information about vertex elements for the manager. */
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struct u_vbuf_elements;
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enum u_fetch_alignment {
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U_VERTEX_FETCH_BYTE_ALIGNED,
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U_VERTEX_FETCH_DWORD_ALIGNED
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enum u_vbuf_return_flags {
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U_VBUF_BUFFERS_UPDATED = 1
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u_vbuf_create(struct pipe_context *pipe,
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unsigned upload_buffer_size,
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unsigned upload_buffer_alignment,
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unsigned upload_buffer_bind,
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enum u_fetch_alignment fetch_alignment);
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void u_vbuf_destroy(struct u_vbuf *mgr);
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struct u_vbuf_elements *
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u_vbuf_create_vertex_elements(struct u_vbuf *mgr,
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const struct pipe_vertex_element *attrs,
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struct pipe_vertex_element *native_attrs);
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void u_vbuf_bind_vertex_elements(struct u_vbuf *mgr,
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struct u_vbuf_elements *ve);
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void u_vbuf_destroy_vertex_elements(struct u_vbuf *mgr,
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struct u_vbuf_elements *ve);
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void u_vbuf_set_vertex_buffers(struct u_vbuf *mgr,
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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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enum u_vbuf_return_flags u_vbuf_draw_begin(struct u_vbuf *mgr,
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struct pipe_draw_info *info);
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unsigned u_vbuf_draw_max_vertex_count(struct u_vbuf *mgr);
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void u_vbuf_draw_end(struct u_vbuf *mgr);
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static INLINE struct u_vbuf_resource *u_vbuf_resource(struct pipe_resource *r)
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return (struct u_vbuf_resource*)r;