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vbo: add new vbo_compute_max_verts() helper function

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Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
This commit is contained in:
Brian Paul 2015-10-16 11:19:40 -06:00
parent 002c5c1da3
commit 03d2f08539
3 changed files with 16 additions and 4 deletions
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14
src/mesa/vbo/vbo_context.h
View file

@ -196,6 +196,20 @@ vbo_get_default_vals_as_union(GLenum format)
}
}
/**
* 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)
{
return (VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) /
(exec->vtx.vertex_size * sizeof(GLfloat));
}
#ifdef __cplusplus
} // extern "C"
#endif

3
src/mesa/vbo/vbo_exec_api.c
View file

@ -291,8 +291,7 @@ vbo_exec_wrap_upgrade_vertex(struct vbo_exec_context *exec,
*/
exec->vtx.attrsz[attr] = newSize;
exec->vtx.vertex_size += newSize - oldSize;
exec->vtx.max_vert = ((VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) /
(exec->vtx.vertex_size * sizeof(GLfloat)));
exec->vtx.max_vert = vbo_compute_max_verts(exec);
exec->vtx.vert_count = 0;
exec->vtx.buffer_ptr = exec->vtx.buffer_map;

3
src/mesa/vbo/vbo_exec_draw.c
View file

@ -435,8 +435,7 @@ vbo_exec_vtx_flush(struct vbo_exec_context *exec, GLboolean keepUnmapped)
if (keepUnmapped || exec->vtx.vertex_size == 0)
exec->vtx.max_vert = 0;
else
exec->vtx.max_vert = ((VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) /
(exec->vtx.vertex_size * sizeof(GLfloat)));
exec->vtx.max_vert = vbo_compute_max_verts(exec);
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
exec->vtx.prim_count = 0;