/* * mesa 3-D graphics library * * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ /** * Types, functions, etc which are private to the VBO module. */ #ifndef VBO_PRIVATE_H #define VBO_PRIVATE_H #include "vbo/vbo_attrib.h" #include "vbo/vbo_exec.h" #include "vbo/vbo_save.h" #include "main/varray.h" struct _glapi_table; struct _mesa_prim; struct vbo_context { struct gl_vertex_buffer_binding binding; struct gl_array_attributes current[VBO_ATTRIB_MAX]; struct gl_vertex_array_object *VAO; struct vbo_exec_context exec; struct vbo_save_context save; }; static inline struct vbo_context * vbo_context(struct gl_context *ctx) { return ctx->vbo_context; } static inline const struct vbo_context * vbo_context_const(const struct gl_context *ctx) { return ctx->vbo_context; } /** * Array to apply the fixed function material aliasing map to * an attribute value used in vbo processing inputs to an attribute * as they appear in the vao. */ extern const GLubyte _vbo_attribute_alias_map[VP_MODE_MAX][VERT_ATTRIB_MAX]; /** * Return if format is integer. The immediate mode commands only emit floats * for non-integer types, thus everything else is integer. */ static inline GLboolean vbo_attrtype_to_integer_flag(GLenum format) { switch (format) { case GL_FLOAT: case GL_DOUBLE: return GL_FALSE; case GL_INT: case GL_UNSIGNED_INT: case GL_UNSIGNED_INT64_ARB: return GL_TRUE; default: unreachable("Bad vertex attribute type"); return GL_FALSE; } } static inline GLboolean vbo_attrtype_to_double_flag(GLenum format) { switch (format) { case GL_FLOAT: case GL_INT: case GL_UNSIGNED_INT: return GL_FALSE; case GL_UNSIGNED_INT64_ARB: case GL_DOUBLE: return GL_TRUE; default: unreachable("Bad vertex attribute type"); return GL_FALSE; } } static inline void vbo_set_vertex_format(struct gl_vertex_format* vertex_format, GLubyte size, GLenum16 type) { _mesa_set_vertex_format(vertex_format, size, type, GL_RGBA, GL_FALSE, vbo_attrtype_to_integer_flag(type), vbo_attrtype_to_double_flag(type)); } /** * Return default component values for the given format. * The return type is an array of fi_types, because that's how we declare * the vertex storage : floats , integers or unsigned integers. */ static inline const fi_type * vbo_get_default_vals_as_union(GLenum format) { static const GLfloat default_float[4] = { 0, 0, 0, 1 }; static const GLint default_int[4] = { 0, 0, 0, 1 }; static const GLdouble default_double[4] = { 0, 0, 0, 1 }; static const uint64_t default_uint64[4] = { 0, 0, 0, 1 }; switch (format) { case GL_FLOAT: return (fi_type *)default_float; case GL_INT: case GL_UNSIGNED_INT: return (fi_type *)default_int; case GL_DOUBLE: return (fi_type *)default_double; case GL_UNSIGNED_INT64_ARB: return (fi_type *)default_uint64; default: unreachable("Bad vertex format"); return NULL; } } /** * Compute the max number of vertices which can be stored in * a vertex buffer, given the current vertex size, and the amount * of space already used. */ static inline unsigned vbo_compute_max_verts(const struct vbo_exec_context *exec) { unsigned n = (exec->ctx->Const.glBeginEndBufferSize - exec->vtx.buffer_used) / (exec->vtx.vertex_size * sizeof(GLfloat)); if (n == 0) return 0; /* Subtract one so we're always sure to have room for an extra * vertex for GL_LINE_LOOP -> GL_LINE_STRIP conversion. */ n--; return n; } void vbo_try_prim_conversion(struct _mesa_prim *p); bool vbo_merge_draws(struct gl_context *ctx, bool in_dlist, struct _mesa_prim *p0, const struct _mesa_prim *p1); unsigned vbo_copy_vertices(struct gl_context *ctx, GLenum mode, struct _mesa_prim *last_prim, unsigned vertex_size, bool in_dlist, fi_type *dst, const fi_type *src); /** * Get the filter mask for vbo draws depending on the vertex_processing_mode. */ static inline GLbitfield _vbo_get_vao_filter(gl_vertex_processing_mode vertex_processing_mode) { if (vertex_processing_mode == VP_MODE_FF) { /* The materials mapped into the generic arrays */ return VERT_BIT_FF_ALL | VERT_BIT_MAT_ALL; } else { return VERT_BIT_ALL; } } /** * Translate the bitmask of VBO_ATTRIB_BITs to VERT_ATTRIB_BITS. * Note that position/generic0 attribute aliasing is done * generically in the VAO. */ static inline GLbitfield _vbo_get_vao_enabled_from_vbo(gl_vertex_processing_mode vertex_processing_mode, GLbitfield64 enabled) { if (vertex_processing_mode == VP_MODE_FF) { /* The materials mapped into the generic arrays */ return (((GLbitfield)enabled) & VERT_BIT_FF_ALL) | (((GLbitfield)(enabled >> VBO_MATERIAL_SHIFT)) & VERT_BIT_MAT_ALL); } else { return ((GLbitfield)enabled) & VERT_BIT_ALL; } } /** * Set the vertex attrib for vbo draw use. */ static inline void _vbo_set_attrib_format(struct gl_context *ctx, struct gl_vertex_array_object *vao, gl_vert_attrib attr, GLintptr buffer_offset, GLubyte size, GLenum16 type, GLuint offset) { const GLboolean integer = vbo_attrtype_to_integer_flag(type); const GLboolean doubles = vbo_attrtype_to_double_flag(type); if (doubles) size /= 2; _mesa_update_array_format(ctx, vao, attr, size, type, GL_RGBA, GL_FALSE, integer, doubles, offset); /* Ptr for userspace arrays. * For updating the pointer we would need to add the vao->NewArrays flag * to the VAO. But but that is done already unconditionally in * _mesa_update_array_format called above. */ assert((vao->NewArrays | ~vao->Enabled) & VERT_BIT(attr)); vao->VertexAttrib[attr].Ptr = ADD_POINTERS(buffer_offset, offset); } #endif /* VBO_PRIVATE_H */