269 lines
7.4 KiB
C
269 lines
7.4 KiB
C
/*
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* mesa 3-D graphics library
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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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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* Types, functions, etc which are private to the VBO module.
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*/
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#ifndef VBO_PRIVATE_H
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#define VBO_PRIVATE_H
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#include "vbo/vbo_attrib.h"
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#include "vbo/vbo_exec.h"
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#include "vbo/vbo_save.h"
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#include "main/varray.h"
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#include "main/macros.h"
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struct _glapi_table;
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static inline struct vbo_context *
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vbo_context(struct gl_context *ctx)
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{
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return &ctx->vbo_context;
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}
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static inline const struct vbo_context *
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vbo_context_const(const struct gl_context *ctx)
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{
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return &ctx->vbo_context;
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}
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static inline struct gl_context *
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gl_context_from_vbo_exec(struct vbo_exec_context *exec)
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{
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return container_of(exec, struct gl_context, vbo_context.exec);
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}
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static inline const struct gl_context *
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gl_context_from_vbo_exec_const(const struct vbo_exec_context *exec)
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{
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return container_of(exec, struct gl_context, vbo_context.exec);
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}
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static inline struct gl_context *
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gl_context_from_vbo_save(struct vbo_save_context *save)
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{
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return container_of(save, struct gl_context, vbo_context.save);
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}
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/**
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* Array to apply the fixed function material aliasing map to
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* an attribute value used in vbo processing inputs to an attribute
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* as they appear in the vao.
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*/
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extern const GLubyte
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_vbo_attribute_alias_map[VP_MODE_MAX][VERT_ATTRIB_MAX];
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/**
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* Return if format is integer. The immediate mode commands only emit floats
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* for non-integer types, thus everything else is integer.
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*/
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static inline GLboolean
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vbo_attrtype_to_integer_flag(GLenum format)
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{
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switch (format) {
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case GL_FLOAT:
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case GL_DOUBLE:
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return GL_FALSE;
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case GL_INT:
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case GL_UNSIGNED_INT:
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case GL_UNSIGNED_INT64_ARB:
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return GL_TRUE;
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default:
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unreachable("Bad vertex attribute type");
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return GL_FALSE;
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}
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}
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static inline GLboolean
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vbo_attrtype_to_double_flag(GLenum format)
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{
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switch (format) {
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case GL_FLOAT:
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case GL_INT:
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case GL_UNSIGNED_INT:
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return GL_FALSE;
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case GL_UNSIGNED_INT64_ARB:
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case GL_DOUBLE:
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return GL_TRUE;
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default:
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unreachable("Bad vertex attribute type");
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return GL_FALSE;
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}
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}
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static inline void
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vbo_set_vertex_format(struct gl_vertex_format* vertex_format,
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GLubyte size, GLenum16 type)
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{
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_mesa_set_vertex_format(vertex_format, size, type, GL_RGBA, GL_FALSE,
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vbo_attrtype_to_integer_flag(type),
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vbo_attrtype_to_double_flag(type));
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}
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/**
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* Return default component values for the given format.
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* The return type is an array of fi_types, because that's how we declare
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* the vertex storage : floats , integers or unsigned integers.
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*/
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static inline const fi_type *
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vbo_get_default_vals_as_union(GLenum format)
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{
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static const GLfloat default_float[4] = { 0, 0, 0, 1 };
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static const GLint default_int[4] = { 0, 0, 0, 1 };
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static const GLdouble default_double[4] = { 0, 0, 0, 1 };
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static const uint64_t default_uint64[4] = { 0, 0, 0, 1 };
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switch (format) {
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case GL_FLOAT:
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return (fi_type *)default_float;
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case GL_INT:
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case GL_UNSIGNED_INT:
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return (fi_type *)default_int;
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case GL_DOUBLE:
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return (fi_type *)default_double;
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case GL_UNSIGNED_INT64_ARB:
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return (fi_type *)default_uint64;
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default:
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unreachable("Bad vertex format");
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return NULL;
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}
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}
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/**
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* Compute the max number of vertices which can be stored in
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* a vertex buffer, given the current vertex size, and the amount
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* of space already used.
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*/
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static inline unsigned
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vbo_compute_max_verts(const struct vbo_exec_context *exec)
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{
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unsigned n = (gl_context_from_vbo_exec_const(exec)->Const.glBeginEndBufferSize -
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exec->vtx.buffer_used) /
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(exec->vtx.vertex_size * sizeof(GLfloat));
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if (n == 0)
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return 0;
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/* Subtract one so we're always sure to have room for an extra
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* vertex for GL_LINE_LOOP -> GL_LINE_STRIP conversion.
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*/
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n--;
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return n;
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}
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void
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vbo_try_prim_conversion(GLubyte *mode, unsigned *count);
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bool
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vbo_merge_draws(struct gl_context *ctx, bool in_dlist,
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GLubyte mode0, GLubyte mode1,
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unsigned start0, unsigned start1,
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unsigned *count0, unsigned count1,
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unsigned basevertex0, unsigned basevertex1,
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bool *end0, bool begin1, bool end1);
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unsigned
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vbo_copy_vertices(struct gl_context *ctx,
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GLenum mode,
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unsigned start, unsigned *count, bool begin,
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unsigned vertex_size,
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bool in_dlist,
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fi_type *dst,
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const fi_type *src);
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/**
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* Get the filter mask for vbo draws depending on the vertex_processing_mode.
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*/
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static inline GLbitfield
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_vbo_get_vao_filter(gl_vertex_processing_mode vertex_processing_mode)
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{
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if (vertex_processing_mode == VP_MODE_FF) {
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/* The materials mapped into the generic arrays */
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return VERT_BIT_FF_ALL | VERT_BIT_MAT_ALL;
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} else {
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return VERT_BIT_ALL;
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}
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}
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/**
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* Translate the bitmask of VBO_ATTRIB_BITs to VERT_ATTRIB_BITS.
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* Note that position/generic0 attribute aliasing is done
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* generically in the VAO.
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*/
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static inline GLbitfield
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_vbo_get_vao_enabled_from_vbo(gl_vertex_processing_mode vertex_processing_mode,
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GLbitfield64 enabled)
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{
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if (vertex_processing_mode == VP_MODE_FF) {
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/* The materials mapped into the generic arrays */
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return (((GLbitfield)enabled) & VERT_BIT_FF_ALL)
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| (((GLbitfield)(enabled >> VBO_MATERIAL_SHIFT)) & VERT_BIT_MAT_ALL);
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} else {
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return ((GLbitfield)enabled) & VERT_BIT_ALL;
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}
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}
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/**
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* Set the vertex attrib for vbo draw use.
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*/
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static inline void
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_vbo_set_attrib_format(struct gl_context *ctx,
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struct gl_vertex_array_object *vao,
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gl_vert_attrib attr, GLintptr buffer_offset,
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GLubyte size, GLenum16 type, GLuint offset)
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{
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const GLboolean integer = vbo_attrtype_to_integer_flag(type);
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const GLboolean doubles = vbo_attrtype_to_double_flag(type);
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if (doubles)
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size /= 2;
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_mesa_update_array_format(ctx, vao, attr, size, type, GL_RGBA,
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GL_FALSE, integer, doubles, offset);
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if (vao->Enabled & VERT_BIT(attr)) {
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vao->NewVertexBuffers = true;
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vao->NewVertexElements = true;
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}
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vao->VertexAttrib[attr].Ptr = ADD_POINTERS(buffer_offset, offset);
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}
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#endif /* VBO_PRIVATE_H */
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