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144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
/*
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* mesa 3-D graphics library
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* Version: 6.5
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*
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* Copyright (C) 1999-2006 Brian Paul 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 "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions 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 MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file vbo_context.h
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* \brief VBO builder module datatypes and definitions.
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* \author Keith Whitwell
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*/
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#ifndef _VBO_H
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#define _VBO_H
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#include "main/glheader.h"
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struct gl_client_array;
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struct gl_context;
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struct gl_transform_feedback_object;
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struct _mesa_prim {
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GLuint mode:8; /**< GL_POINTS, GL_LINES, GL_QUAD_STRIP, etc */
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GLuint indexed:1;
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GLuint begin:1;
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GLuint end:1;
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GLuint weak:1;
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GLuint no_current_update:1;
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GLuint pad:19;
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GLuint start;
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GLuint count;
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GLsizei num_instances;
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};
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/* Would like to call this a "vbo_index_buffer", but this would be
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* confusing as the indices are not neccessarily yet in a non-null
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* buffer object.
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*/
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struct _mesa_index_buffer {
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GLuint count;
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GLenum type;
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struct gl_buffer_object *obj;
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const void *ptr;
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};
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GLboolean _vbo_CreateContext( struct gl_context *ctx );
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void _vbo_DestroyContext( struct gl_context *ctx );
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void _vbo_InvalidateState( struct gl_context *ctx, GLuint new_state );
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typedef void (*vbo_draw_func)( struct gl_context *ctx,
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const struct gl_client_array **arrays,
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const struct _mesa_prim *prims,
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GLuint nr_prims,
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const struct _mesa_index_buffer *ib,
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GLboolean index_bounds_valid,
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GLuint min_index,
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GLuint max_index);
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/* Utility function to cope with various constraints on tnl modules or
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* hardware. This can be used to split an incoming set of arrays and
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* primitives against the following constraints:
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* - Maximum number of indices in index buffer.
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* - Maximum number of vertices referenced by index buffer.
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* - Maximum hardware vertex buffer size.
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*/
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struct split_limits {
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GLuint max_verts;
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GLuint max_indices;
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GLuint max_vb_size; /* bytes */
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};
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void vbo_split_prims( struct gl_context *ctx,
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const struct gl_client_array *arrays[],
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const struct _mesa_prim *prim,
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GLuint nr_prims,
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const struct _mesa_index_buffer *ib,
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GLuint min_index,
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GLuint max_index,
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vbo_draw_func draw,
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const struct split_limits *limits );
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/* Helpers for dealing translating away non-zero min_index.
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*/
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void vbo_rebase_prims( struct gl_context *ctx,
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const struct gl_client_array *arrays[],
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const struct _mesa_prim *prim,
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GLuint nr_prims,
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const struct _mesa_index_buffer *ib,
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GLuint min_index,
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GLuint max_index,
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vbo_draw_func draw );
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int
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vbo_sizeof_ib_type(GLenum type);
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void
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vbo_get_minmax_index(struct gl_context *ctx, const struct _mesa_prim *prim,
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const struct _mesa_index_buffer *ib,
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GLuint *min_index, GLuint *max_index);
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void vbo_use_buffer_objects(struct gl_context *ctx);
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void vbo_always_unmap_buffers(struct gl_context *ctx);
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void vbo_set_draw_func(struct gl_context *ctx, vbo_draw_func func);
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void vbo_check_buffers_are_unmapped(struct gl_context *ctx);
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void vbo_bind_arrays(struct gl_context *ctx);
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size_t
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count_tessellated_primitives(const struct _mesa_prim *prim);
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#endif
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